JP7080080B2 - Building soundness evaluation system, building soundness evaluation method and program - Google Patents

Description

The present invention relates to a building soundness evaluation system, a building soundness evaluation method and a program.

In recent years, the 2011 off the Pacific coast of Tohoku Earthquake and the Kumamoto Earthquake have occurred, and there are concerns about the occurrence of large-scale earthquakes such as the Nankai Trough Earthquake and long-period ground motions in the near future, and interest in building soundness evaluation systems is increasing. .. The building soundness evaluation system evaluates the soundness of a building after a disturbance such as an earthquake or a strong wind (see, for example, Patent Document 1). As a result, after a disturbance occurs, it is possible to support the behavior of building residents and building owners and the judgment of continuous use of the building without waiting for an expert investigation.

By the way, when a building is repeatedly disturbed by multiple earthquakes or long-period ground motions, the soundness of the building generally needs to be evaluated by structural analysis simulation, and it is not possible to evaluate it with a conventional building soundness evaluation system. It was difficult.

Japanese Unexamined Patent Publication No. 2014-134436

The present invention has been made in view of such circumstances, and is a building soundness evaluation system for estimating the degree of damage to a building that has been repeatedly disturbed in the evaluation of the soundness of the building (healthness evaluation), the building soundness. The purpose is to provide degree evaluation methods and programs.

In one aspect of the present invention for solving the above problems, a building including a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer in which the displacement of the own layer can be detected as a boundary. , The energy amount derivation unit that derives the energy amount received by the building for each block due to the disturbance from the relationship between the layer shear force of the block unit and the interlayer displacement based on the measurement result of the vibration of the building, and the energy received by the building. From the cumulative value derivation unit that derives the cumulative value of the energy amount received by each block of the building from the energy amount of each block corresponding to the quantity for each block, and at least from the cumulative value of the energy amount received by each block of the building. Based on the cumulative damage degree derivation part that derives the cumulative damage degree of each block of the building, at least the deformation degree of each block of the building, and the cumulative damage degree of each block of the building, of each block of the building. It is a building soundness evaluation system equipped with a soundness evaluation unit that evaluates soundness .

Further, the cumulative value derivation unit in the building soundness evaluation system derives the cumulative value of the amount of energy absorbed by the structural frame of each block of the building as the cumulative value of the amount of energy received by the building.

Further, the cumulative value derivation unit in the building soundness evaluation system derives the cumulative value of the amount of energy absorbed by the structural frame of each block of the building from the cumulative value of the amount of energy received by the building according to a predetermined rule. do.

Further, the cumulative damage degree derivation unit in the building soundness evaluation system includes a cumulative deformation amount derivation unit that derives the cumulative deformation amount of each block of the building from the cumulative value of the energy amount received by the building, and the building. It is provided with a maximum deformation amount derivation unit that derives the maximum deformation amount of each block of the building from the measurement result of the vibration of the building, and the cumulative damage degree derivation unit has the cumulative deformation amount and the maximum deformation amount of each block of the building. Based on this, the cumulative damage degree of each block of the building is derived.

Further, the soundness evaluation unit in the building soundness evaluation system generates information indicating the result of evaluation of the soundness of the building based on at least the cumulative damage degree of each block of the building for each block.

Further, in the building soundness evaluation system, when the building is provided with a device for absorbing energy acting on the structural frame of the building other than the structural frame of the building, the cumulative value derivation unit is the building. The amount of energy received by the building is divided into the amount of energy absorbed by the structural frame of the building and the amount of energy absorbed by the device at a predetermined ratio, and at least the amount of energy absorbed by the structural frame of the building is derived.

Further, in the building soundness evaluation method of one aspect of the present invention, a building including a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer in which the displacement of the own layer can be detected as a boundary. Based on the measurement result of the vibration of the building, the energy amount received by the building due to the disturbance is derived for each block from the relationship between the layer shear force of the block unit and the interlayer displacement, and the block corresponding to the energy amount received by the building. The cumulative value of the amount of energy received by each block of the building is derived for each block from the amount of energy for each block , and at least the cumulative damage degree of each block of the building is calculated from the cumulative value of the amount of energy received by each block of the building. It includes a process of deriving each block and evaluating the soundness of each block of the building based on at least the degree of deformation of each block of the building and the cumulative damage degree of each block of the building .

Further, in the program of one aspect of the present invention, a building including a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer capable of detecting the displacement of the own layer as a boundary, and the vibration of the building. From the relationship between the layer shear force of each block and the inter-story displacement based on the measurement result of, the step of deriving the amount of energy received by the building due to disturbance for each block and each block corresponding to the amount of energy received by the building The step of deriving the cumulative value of the amount of energy received by each block of the building from the amount of energy for each block, and the cumulative damage degree of each block of the building from at least the cumulative value of the amount of energy received by each block of the building. The computer executes a step of deriving each block and a step of evaluating the soundness of each block of the building based on at least the degree of deformation of each block of the building and the cumulative damage degree of each block of the building. It is a program to make it.

According to the present invention, it is possible to estimate the degree of damage to a building that has been repeatedly disturbed in the evaluation of the soundness of the building.

It is a figure which shows the structural example of the building soundness evaluation system of 1st Embodiment. It is a figure which shows an example of the evaluation table used for the soundness evaluation in the soundness evaluation part for each earthquake of embodiment. It is a figure which shows typically the method of deriving the amount of energy of an embodiment. It is a figure which shows an example of the information which is displayed in the information notification part of an embodiment. It is a flowchart which shows an example of the procedure of the process of the building soundness evaluation method of an embodiment. It is a flowchart which shows an example of the procedure of the process of soundness evaluation based on the cumulative damage degree of a building of an embodiment. It is a figure for demonstrating the evaluation method of the cumulative damage degree of an embodiment. It is a figure which shows an example of the evaluation table used for the soundness evaluation in the comprehensive soundness evaluation part of an embodiment. It is a figure which shows the structural example of the building soundness evaluation system 1A of the 2nd Embodiment. It is a flowchart which shows the procedure of the process which evaluates the soundness based on the cumulative damage degree of the building of an embodiment.

Hereinafter, the building soundness evaluation system and the building soundness evaluation method of the embodiment will be described. If a building is repeatedly disturbed by multiple earthquakes or long-period ground motion, damage to the building will accumulate. The building soundness evaluation system 1 of the present embodiment evaluates the soundness of a building after an earthquake, for example. The building soundness evaluation system 1 enables an evaluation based on the cumulative value of damages received in past earthquakes, in addition to the evaluation after a single earthquake, in the evaluation of the soundness of the building. For example, the building soundness evaluation system 1 is a system that evaluates the soundness of a building by the maximum value of the degree of deformation of the building as the soundness evaluation of the building after receiving a single earthquake. In addition, the building soundness evaluation system 1 derives the amount of energy received by the building for each earthquake as a soundness evaluation of the building after repeated earthquakes in the past, and accumulates the amount of energy to at least build the building. It is a system to evaluate the soundness of a building by deriving the cumulative damage degree of the building from the cumulative value of the amount of energy received by the building.

The "building" referred to in the present application is not limited to a building or a house, but may be a bridge or other structure. Further, the "layer of the building" referred to in the present application means a part of the building that can be treated as one when considering the deformation property of the building. "Building layer" means, for example, each floor of a building (a part composed of floors, beams, columns, walls, etc. of each floor). Further, the "energy amount received by the building" in the present application is the energy amount received by the entire building due to the disturbance, and includes the energy amount absorbed by other than the structural frame of the building. The "energy amount received by the building" is derived from the measurement result of vibration in the building as the energy amount received by the entire building due to the disturbance, and is an estimation of the energy amount actually received by the building. It is a value. The "cumulative value of the amount of energy received by the building" is derived as the integrated value of the above "amount of energy received by the building".

(First Embodiment)
FIG. 1 is a diagram showing a configuration example of the building soundness evaluation system 1 of the present embodiment.
As shown in FIG. 1, the building soundness evaluation system 1 includes, for example, a sensor group 10, an evaluation processing unit 20, a database (DB) 30, and an information notification unit 40. Here, the sensor group 10 is provided in the building 100 to be evaluated for soundness. On the other hand, the evaluation processing unit 20, the database 30, and the information notification unit 40 may be provided in the building 100, or may be provided outside the building 100 (such as a data monitoring room away from the site).

First, the sensor group 10 will be described.
As shown in FIG. 1, the sensor group 10 includes, for example, an acceleration measuring unit 11. The acceleration measurement unit 11 includes a plurality of acceleration sensors S. Each of the plurality of acceleration sensors S measures the seismic motion (hereinafter referred to as input seismic motion) input to the building 100 as acceleration data. Here, the building 100 has, for example, a plurality of layers F. In the present embodiment, the plurality of acceleration sensors S are provided on some layers F (representative floors) among the plurality of layers F of the building 100. In other words, the accelerometer S is provided at intervals (for example, one for each of the two layers and the third layer) for the plurality of layers F of the building 100. The acceleration sensor S may be provided on all layers F of the building 100. Further, instead of the above, the acceleration sensor S may be provided only in the lowermost layer Fb (or the layer F in the vicinity of the lowermost layer Fb) and the uppermost layer Fr (or the layer F in the vicinity of the uppermost layer Fr) of the building 100.

In the present embodiment, the plurality of acceleration sensors S include acceleration sensors Sb, Sm, and Sr. The acceleration sensor Sb is provided on the lowest layer Fb (or the layer F near the lowest layer Fb) of the building 100 including the foundation portion of the building 100, and measures the acceleration at the lowest layer Fb (or the vicinity of the lowest layer Fb) of the building 100. .. The acceleration sensor Sm is provided in any intermediate layer Fm (layers other than the lowest layer Fb and the uppermost layer Fr) of the building 100, and measures the acceleration in the intermediate layer Fm of the building 100. The acceleration sensor Sr is provided in the uppermost layer Fr (or the layer F in the vicinity of the uppermost layer Fr) of the building 100, and measures the acceleration in the uppermost layer Fr (or the vicinity of the uppermost layer Fr) of the building 100. The uppermost floor Fr of the building 100 is, for example, the rooftop of the building 100. In the following, the "bottom layer Fb" and the "layer F near the bottom layer Fb" of the building 100 are collectively referred to as the "bottom layer Fb". Further, the "top layer Fr" and the "layer F near the top layer Fr" of the building 100 are collectively referred to as "top layer Fr".

When the evaluation processing unit 20 is provided inside the building 100, for example, the sensor group 10 transmits the measurement data measured by the sensor group 10 to the evaluation processing unit 20 via a cable, wireless communication, or the like. Further, when the evaluation processing unit 20 is provided outside the building 100, for example, the sensor group 10 uses the measurement data measured by the sensor group 10 via an information communication network or wireless communication via the Internet to evaluate the evaluation processing unit 20. Send to.

Next, prior to the explanation of the evaluation processing unit 20, the information notification unit 40 will be described.
The information notification unit 40 is provided on each layer F of the building 100, for example. The information notification unit 40 can receive information sent from the evaluation processing unit 20 via a cable, wireless communication, an information communication network via the Internet, or the like. For example, the information notification unit 40 has a display screen that can be visually recognized by the user of the building 100, and displays an evaluation result or the like sent from the evaluation processing unit 20. As described above, the information notification unit 40 may be provided outside the building 100.

Next, the evaluation processing unit 20 and the database 30 will be described.
As shown in FIG. 1, the evaluation processing unit 20 includes, for example, a deformation degree derivation unit 23, a cumulative damage degree derivation unit 26, a soundness evaluation unit 27, and an information notification control unit 28. In addition, a part or all of the deformation degree derivation unit 23, the cumulative damage degree derivation unit 26, the soundness evaluation unit 27, and the information notification control unit 28 can be executed by, for example, a processor such as a CPU. It may be a software function unit to be realized, or it may be hardware such as an LSI (Large Scale Integration) or an ASIC (Application Specific Integrated Circuit) having the same function, or it may be realized by the software function unit and the hardware. You may. The above program is stored in, for example, a storage device included in the building soundness evaluation system 1. Further, the database 30 may be realized by the storage device, or may be realized by an external device accessible through an information communication network via the Internet or the like.

Next, the deformation degree derivation unit 23 will be described.
The deformation degree deriving unit 23 derives the deformation degree of the building 100 based on, for example, the data (absolute acceleration) measured by the acceleration measuring unit 11. The "degree of deformation" referred to in the present application is, for example, the inter-story displacement or the inter-story deformation angle of the building 100, but is not limited to this, and may be an inclination angle of a pillar or a wall with respect to the foundation of the building 100. Further, the "deformation degree" referred to in the present application means the degree of deformation of the building 100 including elastic deformation.

For example, in the present embodiment, the deformation degree derivation unit 23 reads data (absolute acceleration) measured by two or more acceleration sensors S. Then, the deformation degree derivation unit 23 derives the absolute displacement of the layer F provided with each acceleration sensor S by integrating the data measured by each acceleration sensor S twice. Then, the deformation degree deriving unit 23 derives the inter-story displacement between the two layers F based on the difference in the absolute displacement amounts of the two layers F provided with the acceleration sensor S. The two layers F are, for example, two layers F adjacent to each other among the plurality of layers F provided with the acceleration sensor S, but the present invention is not limited to this, and the plurality of layers provided with the acceleration sensor S are not limited to this. Two layers F, which are one or more apart from each other in F, may be used. For example, the deformation degree deriving unit 23 of the present embodiment reads the data measured by all the acceleration sensors S, and among all the layers F provided with the acceleration sensors S, the layers between all the layers F adjacent to each other. Derivation of each displacement.

Further, in the present embodiment, the deformation degree deriving unit 23 divides the interlayer displacement derived between the two layers F by the distance in the vertical direction (Z-axis direction (FIG. 1)) between the two layers F. By doing so, the interlayer deformation angle between the two layers F is derived. The information indicating the "distance between the two layers F" used in the above calculation is stored in, for example, in the database 30 in advance. For example, in the present embodiment, the deformation degree deriving unit 23 derives the interlayer deformation angle between all the layers F provided with the acceleration sensor S. Then, the deformation degree deriving unit 23 outputs to the soundness evaluation unit 27 as an evaluation index indicating the deformation degree of the building 100.

Next, the soundness evaluation unit 27 will be described.
The soundness evaluation unit 27 includes an earthquake-specific soundness evaluation unit 271, a cumulative damage degree evaluation unit 272, and a comprehensive soundness evaluation unit 273. The cumulative damage degree evaluation unit 272 and the comprehensive soundness evaluation unit 273 will be described together with the cumulative damage degree derivation unit 26 described later.

First, the earthquake soundness evaluation unit 271 will be described.
The earthquake soundness evaluation unit 271 evaluates the soundness of the building 100 based on the deformation degree (for example, inter-story displacement or inter-story deformation angle) derived by the deformation degree derivation unit 23, for example. The reference value (threshold value) used for evaluation is set for each building 100, for example.

More specifically, the seismic soundness evaluation unit 271 compares the deformation degree (for example, inter-story displacement or inter-story deformation angle) derived by the deformation degree derivation unit 23 with a plurality of preset reference values (threshold values). Therefore, the degree of deformation of the building 100 is classified into a plurality of levels (for example, small, medium, and large). The reference value is set, for example, according to the degree of damage to the structural frame of the building 100. The above reference value (threshold value) is stored in the database 30 as the reference value information 31. The earthquake soundness evaluation unit 271 can acquire information on the reference value (threshold value) by referring to the database 30.

Then, the earthquake soundness evaluation unit 271 evaluates the soundness of the building 100 according to the level of deformation of the building 100. In the present embodiment, the seismic soundness evaluation unit 271 performs the above evaluation on the region between all the layers F adjacent to each other among all the layers F provided with the acceleration sensor S.

FIG. 2 is a diagram showing an example of an evaluation table used for soundness evaluation in the earthquake soundness evaluation unit of the embodiment. As shown in FIG. 2, in the evaluation table, the level of deformation of the building 100 and a plurality of levels related to the soundness of the building 100 are associated in advance. The earthquake soundness evaluation unit 271 uniquely derives the soundness of the building 100 from a plurality of preset levels based on the level of deformation of the building 100 by referring to the evaluation table. Multiple levels of health of the building 100 are, for example, safety, caution, danger and the like.

The evaluation table is stored in the database 30 as the evaluation table information 32.

Next, the cumulative damage degree derivation unit 26 will be described.
The cumulative damage degree deriving unit 26 derives the cumulative damage degree of the building 100 from the cumulative value of at least the amount of energy received by the building 100 due to an earthquake or the like, based on the data (absolute acceleration) measured by the acceleration measuring unit 11. Further, the "cumulative damage degree" means the degree of damage accumulated in the building 100 when the building 100 is repeatedly disturbed by a plurality of earthquakes, long-period ground motions, and the like.

The cumulative damage degree derivation unit 26 of the embodiment is, for example, a layer shear force derivation unit 261, a Q-δ curve generation unit 262, an energy amount derivation unit 263, a cumulative value derivation unit 264, a structural frame absorption energy amount derivation unit 265, and a maximum. A deformation amount derivation unit 266 and a cumulative deformation amount derivation unit 267 are provided. The layer shear force derivation unit 261 and the Q-δ curve generation unit 262, the energy amount derivation unit 263, the cumulative value derivation unit 264, the structural frame absorbed energy amount derivation unit 265, the maximum deformation amount derivation unit 266, and the cumulative deformation amount derivation unit. Reference numeral 267 may be a part of the cumulative damage degree derivation unit 26, and a part or the whole may be independent of each other.

The layer shear force deriving unit 261 derives the layer shear force Qk of each layer based on, for example, the acceleration Ak of each layer and the mass Mk allocated to each layer. For example, the layer shear force Qk is derived as the product of the acceleration Ak of each layer and the mass Mk allocated to each layer. The calculation formula is shown in the formula (1). Note that k is a layer identifier, and its value is a natural number.

Qk = Mk ・ Ak ・ ・ ・ (1)

The layer shear force Qk may be defined as an arithmetic expression as in the above equation (1), and instead of this, it is predetermined as a table showing the layer shear force Q with respect to the acceleration A of each layer. May be good.

The Q-δ curve generation unit 262 shows the relationship between the layer shear force Q and the degree of deformation δ by a locus on a two-dimensional plane. For example, the relationship between the layer shear force Q and the degree of deformation δ is shown in FIG. 3, which will be described later.

The energy amount derivation unit 263 derives the energy amount ΔW2 received by the building 100 due to the disturbance based on the measurement result of the vibration of the building 100. For example, the energy quantity derivation unit 263 derives the energy quantity ΔW2 from the area of the region closed by the curve generated by the Q—δ curve generation unit 262.

FIG. 3 is a diagram schematically showing a method for deriving the amount of energy of the embodiment. The horizontal axis of this graph shows the interlayer displacement (δ), and the vertical axis shows the layer shear force (Q). For example, the area surrounded by the hatched history curve in FIG. 3 is the energy amount ΔW2.

The cumulative value derivation unit 264 accumulates at least the energy amount ΔW2 received by the building 100 due to the disturbance for each target earthquake, and derives the cumulative value ΣW of the energy amount received by the building 100.

When the building 100 receives an energy amount exceeding a predetermined value, the cumulative value derivation unit 264 may set the energy amount ΔW2 as the target of accumulation. For example, the predetermined value may be determined based on the amount of energy when the degree of deformation of the building 100 reaches the plasticized region.

As described above, the cumulative value derivation unit 264 accumulates the energy amount ΔW2 when the degree of deformation of the building 100 reaches the plasticization region, and derives the cumulative value ΣW of the energy amount received by the building 100.

The structural skeleton absorbed energy amount deriving unit 265 derives the cumulative energy amount absorbed by the structural skeleton of the building 100. The value is indicated by the cumulative value ΣWf. For example, the structural skeleton absorbed energy amount deriving unit 265 distributes the cumulative value ΣW of the energy amount received by the building 100 according to a predetermined distribution rule, and at least the structural skeleton of the building 100 absorbs from the result of the distribution. The cumulative value ΣWf of the amount of energy is derived. For example, the distribution rule may be determined as a ratio of the amount of energy absorbed by the structural frame of the building 100 to the amount of energy absorbed by other than the structural frame of the building 100.

The maximum deformation amount deriving unit 266 derives at least the maximum deformation amount (maximum value of the degree of deformation) of the building 100 that has been disturbed. The maximum amount of deformation is, for example, the plasticity ratio. The maximum deformation amount derivation unit 266 does not have to be used.

The cumulative deformation amount deriving unit 267 derives from the cumulative value ΣWf of the amount of energy absorbed by the structural frame of the building 100. The cumulative damage degree derivation unit 26 can derive the cumulative damage degree of the building 100 from at least the cumulative value of the amount of energy received by the building 100. The cumulative deformation amount includes, for example, the cumulative plastic deformation magnification. The cumulative deformation amount derivation unit 267 does not have to be used.

For example, the cumulative damage degree derivation unit 26 derives the cumulative damage degree based on the cumulative deformation amount derived by the cumulative deformation amount derivation unit 267 and the maximum deformation amount derived by the maximum deformation amount derivation unit 266. If the cumulative damage value is less than 1, it may be evaluated that the building health is not affected by the cumulative damage. A method different from the above may be applied to the derivation of the cumulative damage degree by the cumulative damage degree derivation unit 26.

Next, the information notification control unit 28 will be described.
The information notification control unit 28 controls the display operation of the information notification unit 40 and the like by sending a control signal to the information notification unit 40. The information notification control unit 28 sends information including the evaluation result by the evaluation processing unit 20 to the information notification unit 40, and displays the information on the display screen of the information notification unit 40.

FIG. 4 is a diagram showing an example of information displayed on the information notification unit 40 under the control of the information notification control unit 28. Note that (a) in FIG. 4 shows an example in which acceleration sensors S are provided at intervals for a plurality of layers F of the building 100. FIG. 4B shows an example in which the acceleration sensor S is provided only on the lowermost layer Fb and the uppermost layer Fr of the building 100. The horizontal axes in (a) in FIG. 4 and (b) in FIG. 4 correspond to the evaluation results of each index value such as measured seismic intensity, interlayer deformation angle, and soundness. The line graph shown in (a) in FIG. 4 shows the evaluation result of each index value. The value of the end point of the line segment is a stepwise value according to the evaluation standard. When the number of acceleration sensors S is increased, the graph shown in a) in FIG. 4 becomes a line graph. In that case, the value of the bending point of the polygonal line becomes a stepwise value according to the evaluation standard. In contrast to (a) in FIG. 4, (b) in FIG. 4 shows the evaluation results as dots.

The above-mentioned soundness is based on at least one of the evaluation result for each earthquake and the evaluation result based on the cumulative damage degree due to the repeated earthquakes. In addition to this, the above-mentioned line graph may show each index value such as the measured seismic intensity, the inter-story deformation angle, and the soundness. The display may be displayed by switching between the evaluation result and the index value, or may be displayed in an overlapping manner.

As shown in FIG. 4, when the accelerometers S are intermittently provided for the plurality of layers F of the building 100, the area between the two accelerometers S adjacent to each other is displayed as one block B. The soundness for block B is displayed. The display screen of the information notification unit 40 displays, for example, the measured seismic intensity, the inter-story deformation angle, the result of soundness evaluation, and the like as standard output. Further, on the display screen of the information notification unit 40, the response spectrum, the natural period of the building 100, the inclination angle of the building 100, the amount of energy absorbed by the building 100 or its cumulative value, the equivalent attenuation constant, and the like are displayed as detailed outputs. You may. The inclination angle of the building 100 indicates, for example, the inclination angle of the wall of the building 100 or the degree of inclination of the building 100 itself, and may be the degree of inclination of the foundation of the building 100 or the floor of each layer. Further, the information notification control unit 28 may output the same contents as these as a report file.

Next, an example of the processing flow of the building soundness evaluation method of the present embodiment is shown.
FIG. 5 is a flowchart showing an example of a procedure for processing a building soundness evaluation method by the building soundness evaluation system 1. The flowchart shown below shows an example of comprehensively evaluating the building soundness based on the building soundness and the cumulative damage level for each earthquake.

As shown in FIG. 5, when seismic motion is input to the building 100, for example, the acceleration sensor S measures an acceleration exceeding a preset reference value (threshold value). In the present embodiment, for example, the processing of the following flowchart starts when the acceleration sensor S measures an acceleration exceeding a preset reference value (threshold value). Instead of this, the building soundness evaluation system 1 may always perform the processing of the following flowchart at predetermined intervals. Of the processes shown below, processes other than acceleration detection may be performed after the seismic motion has subsided.

First, the acceleration in each layer F of the building 100 is measured by a plurality of acceleration sensors S provided in the building 100 (S100). The acceleration data measured by each acceleration sensor S is sent to the evaluation processing unit 20 as measurement data.

The deformation degree derivation unit 23 of the evaluation processing unit 20 derives the absolute displacement of the layer F provided with each acceleration sensor S based on the measurement data measured by each acceleration sensor S (S131). Then, the deformation degree derivation unit 23 derives the inter-story displacement between the two layers F, for example, based on the difference in the displacement amount of the two layers F from which the absolute displacement is derived (S132). Next, the deformation degree deriving unit 23 derives the inter-story deformation angle between the two layers F by dividing the inter-story displacement between the two layers F by the distance between the two layers F (S133). ). Then, the deformation degree derivation unit 23 outputs the derived inter-story deformation angle to the seismic soundness evaluation unit 271.

Next, the earthquake-specific soundness evaluation unit 271 evaluates the soundness of the building 100 for each earthquake based on the inter-story deformation angle derived by the deformation degree derivation unit 23 (S150). By evaluating the soundness of the building 100 for each earthquake, the degree of damage received by each earthquake can be evaluated.

Next, the cumulative damage degree evaluation unit 272 evaluates the soundness based on the cumulative damage degree of the building 100 (S160). Details of the process related to soundness evaluation based on the cumulative damage level will be described later.

Next, the comprehensive soundness evaluation unit 273 carries out a comprehensive evaluation (soundness comprehensive evaluation) of the soundness of the building 100 (S170). For example, the comprehensive soundness evaluation unit 273 follows a predetermined evaluation rule based on the result of the soundness evaluation of the building 100 for each earthquake and the result of the soundness evaluation based on the cumulative damage degree of the building 100. A comprehensive evaluation of the soundness of the building 100 will be carried out. Details of the processing related to the comprehensive soundness evaluation will be described later.

Next, the information notification control unit 28 transmits the result of each evaluation by the soundness evaluation unit 27 to the information notification unit 40 (S181). Then, the information notification unit 40 outputs information such as displaying the result of each evaluation by the soundness evaluation unit 27 on the display screen (S182). For example, the results of each evaluation include the result of the soundness evaluation of the building 100 for each earthquake, the result of the soundness evaluation based on the cumulative damage degree of the building 100, the result of the soundness comprehensive evaluation of the building 100, and the like. ..

Next, with reference to FIG. 6, the processing of the soundness evaluation based on the cumulative damage degree of the building will be described. FIG. 6 is a flowchart showing an example of a procedure for processing a soundness evaluation based on the cumulative damage degree of the building of the embodiment.

First, the deformation degree derivation unit 23 derives the absolute displacement of the layer F provided with each acceleration sensor S based on the measurement data measured by each acceleration sensor S. Then, the layer shear force deriving unit 261 derives the inter-story displacement δ between the two layers F, for example, based on the difference in the displacement amount of the two layers F from which the absolute displacement is derived (S161).

Next, the deformation degree deriving unit 23 derives the maximum deformation amount based on the derived interlayer displacement δ (S162).

The processing of S161 and S162 may be shared with the processing of S131 and S132.

Next, the layer shear force derivation unit 261 derives the layer shear force Q from the acceleration time history data acquired in S161 (S163).

Next, the Q-δ curve generation unit 262 is Q-for each earthquake based on the relationship between the layer shear force Q derived by the layer shear force derivation unit 261 and the interlayer displacement δ derived by the deformation degree derivation unit 23. Generate a δ curve (S164). For example, as shown in FIG. 3 described above, the Q-δ curve is drawn in a coordinate space on a two-dimensional plane having an axis corresponding to the layer shear force Q and the interlayer displacement δ as axes orthogonal to each other.

Next, the energy amount derivation unit 263 derives the energy amount ΔW2 due to the earthquake from the Q−δ curve for each earthquake (S165).

Next, the cumulative value derivation unit 264 adds the energy amount ΔW2 to the cumulative value ΣW of the energy amount received by the building 100 in the previous earthquake (S166).

Next, the structural frame absorbed energy amount derivation unit 265 changes from the cumulative value ΣW of the energy amount received by the building 100 in the previous earthquake to the cumulative value ΣWf of the energy amount absorbed by the structural frame of the building 100 in the previous earthquake. Is derived (S167). For example, ΣWf is derived by multiplying the cumulative value ΣW of the amount of energy received by the building 100 in the past earthquakes by a predetermined ratio.

Next, the cumulative deformation amount deriving unit 267 derives the cumulative deformation amount based on the cumulative value ΣWf of the energy amount absorbed by the structural frame of the building 100 in the past earthquake (S168).

Next, the cumulative damage degree evaluation unit 272 evaluates the cumulative damage degree of the building 100 based on the maximum deformation amount and the cumulative deformation amount, and obtains the evaluation result of the cumulative damage degree (S169). The process of S169 may be carried out as a part of the process of S170 described above.

The cumulative damage evaluation method by the cumulative damage evaluation unit 272 will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram for explaining a method for evaluating the cumulative damage degree of the embodiment.

The horizontal axis of FIG. 7 shows the passage of time at the time of the arrival of the earthquake, and the vertical axis shows the degree of deformation. The first earthquake shown in FIG. 7A is an earthquake that does not reach the plasticized region of the building 100 even if the degree of deformation of the building 100 is maximum.

For example, the soundness evaluation unit 27 determines two reference values (threshold values) of different sizes depending on whether the degree of deformation of the building 100 reaches the plasticized region and the degree of deformation of the building 100 reaches the dangerous region. Used as a reference, it is identified based on the degree of deformation of the building 100.

The soundness evaluation unit 271 for each earthquake of the soundness evaluation unit 27 evaluates such an earthquake as the target of the soundness evaluation of the building 100 due to a single earthquake, and evaluates that the state of the building 100 is "safe". .. On the other hand, the cumulative damage evaluation unit 272 of the soundness evaluation unit 27 evaluates that the state to be evaluated for the cumulative damage degree has not occurred due to the small degree of deformation.

The comprehensive soundness evaluation unit 273 of the soundness evaluation unit 27 has the result of the evaluation of "safety" by the soundness evaluation unit 271 for each earthquake and the "earthquake subject to the evaluation of the cumulative damage degree" by the cumulative damage degree evaluation unit 272. We will carry out a comprehensive evaluation based on the result of the evaluation "No". As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that the building 100 is in a healthy state and that it is "safe" to continue to use the building 100.

The second earthquake shown in FIG. 7B is an earthquake that may reach the plasticized region of the building 100 when the degree of deformation of the building 100 is maximized. However, the number of times that the shaking reaching the plasticized region of the building 100 is observed in the earthquake is relatively small, and the frequency is also relatively low. Even if the degree of deformation of the building 100 is maximum, the earthquake does not reach the dangerous area of the building 100.

The soundness evaluation unit 271 for each earthquake of the soundness evaluation unit 27 targets such an earthquake for the soundness evaluation of the building 100 due to a single earthquake, and the state of the building 100 requires "caution". Evaluate as there is. On the other hand, the cumulative damage evaluation unit 272 of the soundness evaluation unit 27 evaluates that the earthquake is subject to the cumulative damage evaluation because the shaking reaching the plasticized region of the building 100 is observed. However, since the number of times that the shaking reaching the plasticized region of the building 100 is observed in the earthquake is relatively low and the frequency is relatively low, the cumulative damage evaluation unit 272 may lead to cumulative damage. Is evaluated as small. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 of the soundness evaluation unit 27 received the evaluation result of "caution" by the earthquake-specific soundness evaluation unit 271 and the cumulative damage evaluation unit 272 "to the cumulative damage". We will carry out a comprehensive evaluation based on the result of the evaluation that "the possibility of reaching is small". As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that the building 100 may be damaged and that "caution" is required for continuous use of the building 100.

The third earthquake shown in FIG. 7 (c) is an earthquake that has reached the plasticized region of the building 100 many times in one earthquake. As described above, when the shaking reaching the plasticized region of the building 100 is observed many times during the earthquake, damage may be accumulated in the structural frame of the building 100. Even if the degree of deformation of the building 100 is maximum, the earthquake does not reach the dangerous area of the building 100.

The soundness evaluation unit 271 for each earthquake of the soundness evaluation unit 27 targets such an earthquake for the soundness evaluation of the building 100 due to a single earthquake, and the state of the building 100 requires "caution". Evaluate as there is. In the above case, the energy possessed by the earthquake is relatively large, but as in the case of FIG. 7B described above, the state of the building 100 is evaluated as a state requiring "caution". That is, although the energy possessed by an earthquake is relatively large, there is no difference in the results only by the evaluation by the soundness evaluation unit 271 for each earthquake.

On the other hand, the cumulative damage evaluation unit 272 of the soundness evaluation unit 27 evaluates that the earthquake is subject to the cumulative damage evaluation because the shaking reaching the plasticized region of the building 100 is observed. .. However, since the number of times that the shaking reaching the plasticized region of the building 100 is observed in the earthquake is relatively high and the frequency is relatively high, the cumulative damage evaluation unit 272 may lead to cumulative damage. Is evaluated as large. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 of the soundness evaluation unit 27 received the evaluation result of "caution" by the earthquake-specific soundness evaluation unit 271 and the cumulative damage evaluation unit 272 "to the cumulative damage". We will carry out a comprehensive evaluation based on the result of the evaluation that "there is a high possibility of reaching". As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that the building 100 may be damaged and it is "dangerous" to continue to use the building 100.

FIG. 8 is a diagram showing an example of an evaluation table used for soundness evaluation in the comprehensive soundness evaluation unit of the embodiment. In the evaluation table shown in FIG. 8, the level of the cumulative damage degree and the level of the degree of deformation of the building 100 are associated with a plurality of levels regarding the soundness of the building 100 in advance. By referring to the above evaluation table, the earthquake-based soundness evaluation unit 271 sets the soundness of the building 100 among a plurality of preset levels based on the level of cumulative damage and the level of deformation of the building 100. Unambiguously derived from. The plurality of levels of health of the building 100 are, for example, "safety", "caution", "danger" and the like.

For example, the soundness of the building 100 assigned to the evaluation table is low when the cumulative damage level is high even if the deformation level of the building 100 is evaluated as "medium", and the cumulative damage level is low. If the level of is small, the soundness is high. Similarly, the soundness of the building 100 assigned to the evaluation table is low when the level of cumulative damage is evaluated as "small" but the level of deformation is high, and the level of deformation is low. If it is small, the soundness is high. The soundness of the building 100 assigned to the evaluation table is determined when the level of deformation of the building 100 is evaluated as "large" or when the level of cumulative damage is evaluated as "large". Identify as "danger". According to such an evaluation table, the soundness of the building 100 assigned to the evaluation table is that the level of cumulative damage is "large" even if the level of deformation of the building 100 is evaluated as "medium". If evaluated, it can be identified as "dangerous". If the level of deformation of the building 100 is "small", the level of cumulative damage will not be "small" or "large". On the contrary, if the cumulative damage level is "none", the deformation level of the building 100 is not "medium" or "large". In FIG. 8, the column marked with “x” indicates that there is no combination of conditions. The evaluation table is stored in the database 30 as the evaluation table information 32.

By carrying out each of the above processes, the cumulative damage evaluation unit 272 completes a series of processes shown in the figure.

According to the embodiment configured in this way, the building soundness evaluation system 1 is the amount of energy received by the building 100 due to the disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building 100. Is derived. The building soundness evaluation system 1 derives a cumulative value of the amount of energy absorbed by the building 100 from the amount of energy received by the building 100. The building soundness evaluation system 1 derives the cumulative damage degree of the building 100 from at least the cumulative value of the amount of energy received by the building 100. As a result, the building soundness evaluation system 1 can derive the cumulative damage degree of the building 100 based on at least the cumulative value of the amount of energy received by the building 100, so that repeated shaking (disturbance) is performed in the building soundness evaluation. ) Can be used to derive the degree of damage to the building.

The building soundness evaluation system 1 derives the cumulative value of the amount of energy absorbed by the structural frame of the building 100 as the cumulative value of the amount of energy received by the building 100, so that the evaluation based on the degree of deformation for each earthquake is achieved. Differently, the degree of cumulative damage to the building 100 can be derived.

At that time, the building soundness evaluation system 1 derives the cumulative value of the amount of energy absorbed by the structural frame of the building 100 from the cumulative value of the amount of energy received by the building 100 according to a predetermined rule, and the structural frame of the building 100 determines. By dividing the amount of absorbed energy into the amount of energy absorbed (decayed) by other than the structural frame of the building 100, it is possible to derive at least the amount of energy absorbed by the structural frame of the building 100. Since the soundness of the building 100 is affected by the accumulated damage, the soundness of the building 100 can be evaluated by deriving at least the amount of energy absorbed by the structural frame of the building 100. The building soundness evaluation system 1 may exclude the internal damping of the building 100 and the damping due to the vibration damping device such as a damper from the cumulative target of the amount of energy. The above-mentioned predetermined rule may be a predetermined rule. The rule may be divided into the amount of energy absorbed by the structural frame in the building 100 and the amount of energy absorbed (attenuated) by other than the structural frame of the building 100. Further, the rule may indicate the above-mentioned allocation of the amount of energy or the like as a ratio.

By providing the predetermined rules as described above, even if the building 100 is provided with the vibration damping device as described above, the building soundness evaluation system 1 has the characteristics of the vibration damping device. The amount of energy can be divided by a predetermined ratio based on it, and it is possible to accumulate at least the amount of energy related to the damage of the building 100. The vibration damping device described above is an example of a device that absorbs energy acting on the structural frame of the building 100 other than the structural frame of the building 100.

As shown in the above embodiment, the building soundness evaluation system 1 derives the amount of energy received by the building 100 due to the disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building 100. By deriving the cumulative value of the amount of energy absorbed by the building 100 from the amount of energy received by the building 100, and deriving the cumulative damage degree of the building 100 from at least the cumulative value of the amount of energy absorbed by the building 100, the building 100 Enables soundness assessment.

The building soundness evaluation system 1 derives the maximum amount of deformation of the building 100 that has been disturbed based on the measurement result of the vibration of the building 100, and the layer shear force based on the measurement result of the vibration of the building 100. The amount of energy of the building 100 that has been disturbed is derived from the relationship between the above and the inter-story displacement, and the cumulative amount of deformation of the building 100 is derived from the cumulative value of the amount of energy absorbed by the building 100. Then, it is possible to evaluate the soundness of the building 100 based on the cumulative deformation amount and the maximum deformation amount of the building 100.

(Variation example of the first embodiment)
In this modified example, an example in which a process different from the above-described embodiment is applied to the process of evaluating the soundness of a building due to a single earthquake will be described.

For example, the earthquake soundness evaluation unit 271 is based on the measurement result of at least one of the deformation degree in each layer of the building 100, the natural period of the building 100, and the inclination angle of the building 100, or a combination result of a plurality of them. , Evaluate the soundness of the building 100 for each earthquake. For a detailed method for evaluating the soundness of the building 100 for each earthquake, Japanese Patent Application Laid-Open No. 2014-134436 may be referred to.

The tilt angle of the building 100 may be derived from the data of each sensor that detects the vibration, or the tilt angle of the building 100 may be detected by individually providing an tilt angle meter (not shown). ..

According to the above variant, known techniques can be applied to the process of assessing the health of a building due to a single earthquake and combined with the assessment of cumulative damage.

(Second embodiment)
The second embodiment will be described. In the first embodiment, an example of deriving the cumulative damage degree via the maximum deformation amount and the cumulative deformation amount has been described. In this embodiment, it will be described that the cumulative damage degree is derived from the cumulative value of energy.

FIG. 9 is a diagram showing a configuration example of the building soundness evaluation system 1A of the embodiment.
As shown in FIG. 9, the building soundness evaluation system 1A of the embodiment includes, for example, a sensor group 10, an evaluation processing unit 20A, a database (DB) 30, and an information notification unit 40.

The evaluation processing unit 20A includes, for example, a deformation degree derivation unit 23, a cumulative damage degree derivation unit 26A, a soundness evaluation unit 27A, and an information notification control unit 28.

The cumulative damage degree derivation unit 26A of the embodiment includes a layer shear force derivation unit 261, a Q-δ curve generation unit 262, an energy amount derivation unit 263, a cumulative value derivation unit 264, and a structural frame absorption energy amount derivation unit 265. The above-mentioned cumulative damage degree derivation unit 26 includes a maximum deformation amount derivation unit 266 and a cumulative deformation amount derivation unit 267, except that the cumulative damage degree derivation unit 26A does not include these.

The soundness evaluation unit 27A includes an earthquake-specific soundness evaluation unit 271, a cumulative damage degree evaluation unit 272A, and a comprehensive soundness evaluation unit 273.

Next, with reference to FIG. 10, a process for evaluating the soundness based on the cumulative damage degree of the building will be described. FIG. 10 is a flowchart showing a procedure for evaluating the soundness based on the cumulative damage degree of the building of the embodiment. From the procedure of the process for evaluating the soundness based on the cumulative damage degree of the building shown in FIG. 6, the process of S162 and S168 is omitted, and the process of S169A is different.

The cumulative damage degree evaluation unit 272A determines the cumulative value ΣWf of the amount of energy absorbed by the structural frame of the building 100 with reference to a predetermined determination reference value (threshold value) Wlim (S169A). The determination reference value (threshold value) Wlim may be determined based on, for example, the amount of energy that causes damage to the building 100 based on the building information at the time of designing the building 100.

Based on the above determination, the cumulative damage evaluation unit 272A classifies the degree of cumulative damage (cumulative damage degree) into three levels: "none", "small", and "large".

According to the above embodiment, by following the procedure for deriving the cumulative damage degree from the cumulative value of the amount of energy, the same effect as that of the first embodiment can be obtained.

The application of the building soundness evaluation system 1 is not limited to the structural type of the building 100. For example, when the building 100 is of any of S structure, RC structure and SRC structure, the building soundness evaluation system 1 evaluates the soundness of the building 100 according to an evaluation method suitable for the structural type.

According to the building soundness evaluation system 1 (1A), the soundness of the building 100 can be evaluated by deriving the degree of damage caused by the repeated disturbance of the building 100. This makes it possible to evaluate the degree of cumulative damage that could not be evaluated only by the evaluation based on the degree of a single earthquake. According to the building soundness evaluation system 1 (1A), it is possible to evaluate the soundness of the building 100 when a plurality of earthquakes or long-period ground motions occur.

The cumulative value derivation unit 264 accumulates at least the amount of energy received by the building 100 for each earthquake from the amount of energy received by the building 100, and at least according to a predetermined rule from the cumulative value of the amount of energy received by the building 100. The cumulative value of the amount of energy absorbed by the building 100 may be derived.

Although the building soundness evaluation system 1 and the building soundness evaluation method according to the embodiment have been described above, the embodiment is not limited to the above example.

1, 1A ... Building soundness evaluation system (structure soundness evaluation system), 11 ... Acceleration measurement unit, 23 ... Deformation degree derivation unit, 26, 26A ... Cumulative damage degree derivation unit, 27, 27A ... Soundness evaluation unit, 28 ... Information notification control unit, 100 ... Building, 261 ... Layer shear force derivation unit, 262 ... Q-δ curve generation unit, 263 ... Energy amount derivation unit, 264 ... Cumulative value derivation unit, 265 ... Structural frame absorption energy amount derivation 266 ... Maximum deformation amount derivation part, 267 ... Cumulative deformation amount derivation part, S ... Acceleration sensor, F ... Building layer.

Claims (8)

A building containing a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer capable of detecting the displacement of the own layer as a boundary.
An energy amount derivation unit that derives the amount of energy received by the building due to disturbance from the relationship between the layer shear force of each block based on the measurement result of the vibration of the building and the inter-story displacement, and the energy amount derivation unit.
A cumulative value derivation unit that derives the cumulative value of the energy amount received by each block of the building from the energy amount of each block corresponding to the energy amount received by the building for each block.
A cumulative damage degree derivation unit that derives the cumulative damage degree of each block of the building from at least the cumulative value of the amount of energy received by each block of the building.
With a soundness evaluation unit that evaluates the soundness of each block of the building based on at least the degree of deformation of each block of the building and the cumulative damage degree of each block of the building.
Building soundness evaluation system equipped with. The cumulative value derivation unit is
As the cumulative value of the amount of energy received by the building, the cumulative value of the amount of energy absorbed by the structural frame of each block of the building is derived.
The building soundness evaluation system according to claim 1. The cumulative value derivation unit is
From the cumulative value of the amount of energy received by the building, the cumulative value of the amount of energy absorbed by the structural frame of each block of the building is derived according to a predetermined rule.
The building soundness evaluation system according to claim 2. The cumulative damage degree derivation unit is
A cumulative deformation amount derivation unit that derives the cumulative deformation amount of each block of the building from the cumulative value of the energy amount received by the building, and
It is equipped with a maximum deformation amount derivation unit that derives the maximum deformation amount of each block of the building from the measurement result of the vibration of the building.
The cumulative damage degree derivation unit is
Based on the cumulative deformation amount and the maximum deformation amount of each block of the building, the cumulative damage degree of each block of the building is derived.
The building soundness evaluation system according to claim 3. The soundness evaluation unit
The building soundness evaluation system according to claim 1 , wherein information indicating the result of evaluation of the soundness of the building based on at least the cumulative damage degree of each block of the building is generated for each block . When the building is provided with a device other than the structural frame of the building that absorbs the energy acting on the structural frame of the building.
The cumulative value derivation unit is
The amount of energy received by the building is divided into the amount of energy absorbed by the structural frame of the building and the amount of energy absorbed by the device at a predetermined ratio, and at least the amount of energy absorbed by the structural frame of the building is derived.
The building soundness evaluation system according to claim 3. A building containing a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer capable of detecting the displacement of the own layer as a boundary.
The amount of energy received by the building due to disturbance is derived for each block from the relationship between the layer shear force in block units and the inter-story displacement based on the measurement results of the vibration of the building.
From the amount of energy for each block corresponding to the amount of energy received by the building, the cumulative value of the amount of energy received by each block of the building is derived for each block .
At least from the cumulative value of the amount of energy received by each block of the building, the cumulative damage degree of each block of the building is derived for each block.
A building soundness evaluation method including a process of evaluating the soundness of each block of the building based on at least the degree of deformation of each block of the building and the cumulative damage degree of each block of the building. A building containing a plurality of layers is divided into a plurality of blocks in the height direction of the building with a layer capable of detecting the displacement of the own layer as a boundary.
A step of deriving the amount of energy received by the building due to disturbance from the relationship between the layer shear force of each block based on the measurement result of the vibration of the building and the inter-story displacement, and the step of deriving each block .
A step of deriving the cumulative value of the amount of energy received by each block of the building from the amount of energy per block corresponding to the amount of energy received by the building, and a step of deriving each block .
At least the step of deriving the cumulative damage degree of each block of the building from the cumulative value of the amount of energy received by each block of the building for each block .
A step to evaluate the soundness of each block of the building based on at least the degree of deformation of each block of the building and the cumulative damage degree of each block of the building.
A program that lets your computer run.

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