JP5701577B2 - Housing with vibration control system - Google Patents

Description

The present invention relates to a house having a vibration damping system, and more particularly to a house having a vibration damping system capable of estimating a damper life of a vibration damping device.

  For example, a technique described in Patent Document 1 has been proposed as a deterioration diagnosis technique for determining damage to a building caused by an earthquake.

  In the technique of Patent Document 1, the cumulative damage of the energy absorbing portion due to external force is provided for the purpose of providing a strength element that can easily perform deterioration diagnosis without providing a separate member, or a seismic element, and a deterioration diagnosis method for the strength element. It has been proposed to apply a paint having a predetermined correlation between the amount and the amount of peeling of the paint applied to the surface of the energy absorbing portion on the surface of the energy absorbing portion.

Japanese Patent No. 4215686

  However, the technique described in Patent Document 1 is effective for determining the degree of damage to the elastic-plastic energy absorber and whether or not it is necessary to replace it, but the aspects such as determining the lifetime of the damper of the vibration damping device and the degree of damage related to the entire building. Then there is room for improvement.

  The present invention has been made in consideration of the above-described facts, and an object of the present invention is to provide a house including a vibration damping system that can easily determine the damper life of the vibration damping device.

In order to achieve the above object, a building according to claim 1 is provided with a vibration damping device that is provided in a structure and has a damper that attenuates vibration caused by an earthquake, and a displacement amount of the damper when the vibration is attenuated and the damper. Detecting means for detecting at least one of the temperature related to the damper, estimating means for estimating the life of the damper based on the detection result of the detecting means , the oil temperature in the damper or the surface temperature of the damper and the damper Condition storage means for storing the correlation with the degree of deterioration of the condition as a condition for determining the life of the damper , the detection means detects the oil temperature in the damper or the surface temperature of the damper, The estimation means estimates the lifetime of the damper by reading the degree of deterioration corresponding to the detection result of the detection means .

According to the first aspect of the present invention, the vibration damping device has a damper that is provided in the structure and attenuates the shaking caused by the earthquake. That is, when an earthquake occurs, the vibration of the building is attenuated by the damper.

  The detecting means detects at least one of information about the amount of displacement of the damper and the temperature related to the damper when the earthquake shake is attenuated. That is, when an earthquake occurs, the damper is displaced, and the temperature related to the damper (the oil temperature inside the damper and the surface temperature of the damper) increases due to the sliding resistance due to the amplitude displacement. Information on at least one of the temperatures related to the damper is detected.

The estimating means estimates the life of the damper based on the detection result of the detecting means. For example, when the detecting means detects the amount of displacement of the damper, the amount of displacement is accumulated, so that it is determined that the life of the damper has reached a predetermined accumulated displacement amount, and the detecting means detects the temperature related to the damper. In this case, it is possible to determine the life when the maximum temperature is equal to or higher than a predetermined temperature. Therefore, it is possible to easily determine the damper life of the vibration damping device.

In addition, as in the invention described in claim 2, it further includes history storage means for storing at least one of the displacement amount and temperature detected by the detection means as history, and the estimation means stores the history storage means in the history storage means. The life of the damper may be determined based on the recorded history.

According to the first aspect of the present invention , there is provided condition storage means for storing the correlation between the oil temperature in the damper or the surface temperature of the damper and the degree of deterioration of the damper as a condition for determining the life of the damper. , the detection means detects the surface temperature of the oil temperature or damper in the damper, estimating means, we estimate the lifetime of the damper by reading the degradation degree corresponding to the detection result of the detecting means.

Further, as in the third aspect of the invention, at least one damage degree is calculated from the presence / absence of plasticization, the maximum plastic ratio, and the cumulative plastic deformation magnification based on the amount of displacement of the damper detected by the detecting means. By doing so, you may make it further provide the prediction means which estimates the damage degree of the structure provided with the damper. In this case, as in the invention described in claim 4, when the degree of damage greater than a predetermined value is predicted by the prediction means, a warning means for performing a replacement or maintenance warning may be further provided. Good. Further, the predicting means may predict the damage status of the building by comparing the previously calculated damage degree with the currently calculated damage degree, as in the fifth aspect of the invention.

In addition, it is preferable to have 1 or more damping devices in the outer peripheral part of each direction of a house like the invention of Claim 6 .

  As described above, according to the present invention, information on at least one of the displacement amount of the damper and the temperature related to the damper is detected, and the life of the damper is estimated based on the detection result. There is an effect that it can be determined.

It is a figure which shows the outline of the house which has the vibration suppression system concerning embodiment of this invention. It is a figure which shows schematic structure of the damping device provided in the house which has the damping system concerning embodiment of this invention. It is a block diagram which shows schematic structure of the vibration suppression system concerning embodiment of this invention. It is a figure which shows an example of the structure of DB, and the information memorize | stored. It is a flowchart showing the flow of a process at the time of running a diagnostic program in the vibration suppression system concerning embodiment of this invention. (A) is a schematic diagram showing the relationship between the sliding distance of the damper and the damping force, (B) is a schematic diagram for explaining the characteristics of the temperature and damping force of the damper, and (C) is an accumulation of the damper. It is a schematic diagram which shows the raise of the temperature at the time of operation | movement with respect to operation time. (A) shows the example of arrangement | positioning of a damping device, (B) is a schematic diagram for showing each amount of displacement when a horizontal force acts with respect to the building which is easy to twist.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an outline of a house having a vibration damping system according to an embodiment of the present invention.

  In the embodiment of the present invention, a house is described as an example of a unit building house 10 composed of a plurality of (eight in FIG. 1) building units 12. However, the house is not limited to a unit building. You may make it apply the building of a structure.

  For convenience of explanation, names are given to the members of the building unit 12. The building unit 12 includes four pillars 14, two sets of long and short ceiling beams 16 and 18 arranged in parallel to each other, and two sets of long and short sets arranged parallel to the ceiling beams 16 and 18 in the vertical direction. The floor girder 20 and 22 are provided, and the end portion of the beam is welded to a ceiling and a floor joint to form a ramen structure. However, the unit configuration is not limited to the above, and another box-shaped frame structure may be used.

  In the present embodiment, channel steel (grooved steel) having a U-shaped cross section is used for the ceiling beams 16 and 18 and the floor beams 20 and 22.

  The building unit 12 includes a ceiling frame 24 and a floor frame 26 assembled in a rectangular frame shape, and is configured such that four pillars 14 are erected between them. The ceiling frame 24 includes ceiling joints (columns) 27 at the four corners, and ends of the ceiling beams 16 and 18 having different lengths are welded to the ceiling joints 27.

  Similarly, the floor frame 26 includes floor joints (columns) 28 at four corners, and the longitudinal ends of the floor beams 20 and 22 having different lengths are welded to the floor joint 28.

  Then, the upper and lower ends of the column 14 are rigidly joined by welding between the ceiling joint portion 27 and the floor joint portion 28 arranged facing each other in the vertical direction, and the building unit 12 is temporarily fixed by bolts. Composed.

  Next, the vibration control device provided in the house 10 according to the embodiment of the present invention will be described. FIG. 2 is a diagram showing a schematic configuration of a vibration damping device provided in the house 10 having the vibration damping system according to the embodiment of the present invention.

  As shown in FIGS. 1 and 2, the vibration damping device 30 provided in the house 10 according to the embodiment of the present invention is provided between the ceiling beam 16 and the floor beam 22. Note that it may be provided between the floor beam 20 and the ceiling beam 18.

  The vibration damping device 30 according to the present embodiment includes a first extending member 32, a damper 34, and a second extending member 36, which will be described below. In addition, although the structure of the damping device 30 is demonstrated as an example, it is not limited to this, It is good also as another structure.

  As shown in FIG. 2, on the upper surface of the floor girder 22, a first extending member 32 constituting the vibration damping device 30 is installed.

  The first extending member 32 includes a first column member 38 made of steel that extends in the vertical direction and a second column member 40 that is inclined with respect to the first column member 38. The upper end of the second column member 40 is welded to the upper side surface of the first column member 38. Note that the first extending member 32 may have another shape.

  A flange plate 42 is attached to the lower end of the first column member 32 to be attached to the floor beam 22. A flange plate 42 is similarly welded to the lower end of the second column member 40.

  Although not shown in FIG. 2, a frame-shaped bracket made of a steel plate is inserted inside the floor beam 22. The upper surface of the bracket is the upper portion of the floor beam 22, and the lower surface of the bracket is the floor beam 22. The floor girder is reinforced in close contact with the lower plate.

  The flange plate 42, the upper plate portion of the floor girder 22 and the upper portion of the bracket are connected to each other with bolts (not shown), and the lower plate portion of the floor girder 22 and the lower portion of the bracket are anchor bolts fixed to the foundation 44. It is fixed with.

  A first damper mounting member 46 is fixed to the side surface near the upper end of the first column member 38, and a second extending member 36 is fixed to the lower surface of the ceiling beam 16.

  It is assumed that a gap is provided between the ceiling beam 16 and the first column member 38.

  A damper 34 is horizontally disposed between the first damper mounting member 46 and the second extending member 36, and one end of the damper 34 is connected to the first damper mounting member 46 via a pin 46A. The other end is connected to the second extending member 36 via a pin 36A.

  The damper 34 is a relative displacement between the first damper mounting member 46 and the second extending member 36 (the relative displacement in the axial direction of the floor girder 22 and the axial direction of the ceiling girder 16, and in the direction of arrow A in FIG. Relative displacement of). For example, the damper 34 may be applied with a damper (oil damper such as a shock absorber of an automobile) that attenuates vibration by passing oil through an orifice provided inside the damper 34, and the vibration caused by an earthquake is rotated. You may make it apply what transform | converts into a motion and attenuates a vibration by resistance of the viscous body (for example, silicone oil) around the rotary body provided in the inside of the damper 34. FIG. The damper 34 may be a known damper such as an oil damper or a viscoelastic damper (for example, a damper such as a speed-dependent damper) as long as it generates a damping force during relative displacement in the direction of arrow A in FIG. Can be used.

  The damper 34 is provided with a measuring instrument 80 for measuring information for determining the life of the damper 34 and predicting building damage. In the present embodiment, the measuring instrument 80 measures the amount of displacement of the damper 34 and measures the oil temperature in the damper 34.

  The vibration damping device 30 may be retrofitted after the building is built. For example, a damping device such as a damping member can be provided in the panel as a damping panel and can be retrofitted by panel replacement or the like.

  Next, a vibration damping system having a function for diagnosing deterioration of the damper 34 of the vibration damping device 30 will be described. FIG. 3 is a block diagram showing a schematic configuration of the vibration damping system 50 according to the embodiment of the present invention.

  The vibration damping system 50 includes a personal computer (PC) 52. The PC 52 includes a CPU 54, a ROM 56, a RAM 58, and an input / output port 60. These are connected to each other via various buses such as an address bus, a data bus, and a control bus. The input / output port 60 includes a display 62, a mouse 64, a keyboard 66, a hard disk (HD) as various input / output devices. 68) and a disk drive 70 for reading information from various disks 72 (for example, CD-ROM, DVD, etc.).

  A measuring instrument 80 including a displacement sensor 82 that measures the amount of displacement of the damper 34 and a temperature sensor 84 that measures the temperature of the damper 34 is connected to the input / output port 60. The displacement sensor 82 measures, for example, the amount of displacement when the damper 34 is expanded or contracted using a laser beam or the like, and outputs the measurement result to the PC 52. The temperature sensor 84 measures the oil temperature in the damper 34 and outputs the measurement result to the PC 52. Thus, the PC 52 determines the life of the damper 34 or predicts building damage using the measurement result of the measuring instrument 80.

  A network 74 is connected to the input / output port 60 so that information can be exchanged with various devices connected to the network 74. In the present embodiment, a data server 78 to which a database (DB) 76 is connected is connected to the network 74, and information can be exchanged with the DB 76.

  As shown in FIG. 4, the DB 76 includes a condition DB 76 </ b> A that stores information necessary for determining the life of the damper 34 and predicting building damage, and a history DB 76 </ b> B that stores measurement results of the measuring instrument 80.

  The condition DB 76A includes, for example, information such as the correlation between the sliding distance of the damper and the durability, the correlation between the damper temperature and the oil deterioration, the information such as the building rigidity and the strength data, and the correlation between the degree of damage and the interlayer deformation. Stored in advance. As these pieces of information, data obtained in advance by experiments or the like is stored.

  In the history DB 76B, various measurement results such as a maximum value, a minimum value, a cumulative value, and a damper temperature of the displacement amount of the damper 34 are stored as a history.

  Information stored in the DB 76 is read out and used when determining the life of the damper 34 or predicting building damage. In the present embodiment, it is assumed that various types of information are stored in the DB 74 connected to the data server 78. However, the information in the DB 76 is stored in the HDD 46 built in the personal computer 30 or an external hard disk. You may make it do.

  Further, the HDD 68 of the PC 52 is installed with a diagnostic program for determining the life of the damper 34 and predicting damage to the building. There are several methods for installing the diagnostic program of the present embodiment on the PC 52. For example, the diagnostic program is stored in a CD-ROM or DVD together with the setup program, and the disk is set in the disk drive 72. In addition, a diagnostic program may be installed in the HDD 68 by executing a setup program for the CPU 54, or communication with other information processing equipment connected to the PC 52 via a public telephone line or the network 74. Thus, the diagnostic program may be installed in the HDD 68.

  Next, the flow of processing when the above-described diagnostic program is executed will be described. FIG. 5 is a flowchart showing the flow of processing when a diagnostic program is executed in vibration damping system 50 according to the embodiment of the present invention. The diagnostic program starts when, for example, the vibration control system 50 is installed in the house 10 and the power is turned on.

  In step 100, monitoring of the damper 34 by the measuring instrument 80 is started, and the routine proceeds to step 102. That is, the expansion / contraction of the damper 34 caused by the shaking of the house is detected by the displacement sensor 82, and the temperature of the oil heated by the sliding resistance by the operation of the damper 34 is detected by the temperature sensor 84. The detection result is input to the PC 52.

  In step 102, it is determined whether or not there is a displacement amount or a temperature change of the damper 34. If the determination is affirmative, the process proceeds to step 104. If the determination is negative, the process proceeds to step 106.

  In step 104, the displacement amount and the temperature measurement result are stored in the DB 76 as a history, and the process proceeds to step 106. For example, the maximum displacement amount, the minimum displacement amount, the cumulative displacement amount, etc. of the damper 34 detected by the displacement sensor 82 are stored in the history DB 76B, and the oil temperature at the time of operation of the damper 34 detected by the temperature sensor 84 (for example, Maximum value) is stored in the history DB 76B.

  In step 106, it is determined whether or not to start the life determination of the damper 34. In this determination, it is determined whether or not an operation for starting the life determination of the damper 34 has been performed by the keyboard 66, the mouse 64, or the like. If the determination is affirmative, the process proceeds to step 108, and if the determination is negative. Goes to step 116.

  In step 108, the measurement history is read from the history DB 76B, and the process proceeds to step 110. That is, the displacement amount and temperature measurement result stored in step 104 are read out.

  In step 110, the damper life determination based on the measurement history is performed, and the routine proceeds to step 112. Here, an example of a method for determining the damper life will be described.

When the damper 34 of the vibration damping device 30 is repeatedly expanded and contracted, the internal oil deteriorates and a predetermined damping force cannot be obtained, and the function as the damper 34 is not performed. That is, since there is a correlation between the sliding distance of the damper 34 and the damping force, the life of the damper 34 can be determined from the sliding distance. Therefore, in the present embodiment, the correlation between the sliding distance and the damping force is obtained in advance by experiments or the like, stored in the condition DB 76A, and the displacement amount of the damper 34 is detected and accumulated to obtain the history DB 76B. This information can be read out to determine the life of the damper 34. If the relationship between the sliding distance and the damping force is, for example, the relationship shown in FIG. 6A, by setting a threshold damping force that satisfies the damping performance in advance, the corresponding accumulated displacement amount ( Therefore, it is possible to determine the lifetime of the damper 34 by determining whether or not the cumulative value of the displacement amount of the damper 34 monitored by the displacement sensor 82 is equal to or greater than the cumulative threshold.

Alternatively, for example, the damper 34 of the vibration damping device 30 rises in temperature due to sliding resistance when activated, and the damping force decreases as shown in FIG. . Then, as shown in FIG. 6C, the temperature during operation increases as the internal oil deteriorates, so the correlation between the temperature during operation and the deterioration is measured in advance and stored in the condition DB 76A. Deterioration is predicted from the maximum temperature at the time of operation of 34, and it may be determined whether it is the lifetime by comparing with a predetermined threshold value. In this case, since the maximum temperature varies depending on the operation amount and the operation time, it may not be possible to accurately determine the life. Therefore, the detection result of the displacement sensor 82 is used to further consider the amplitude, the operation time, and the like. The life may be determined. This makes it possible to increase the life determination accuracy. Moreover, you may make it measure the surface temperature of a damper instead of oil temperature. In this case, since the influence due to fluctuations in the outside air temperature is large, the life determination accuracy of the damper 34 may be lower than when measuring the oil temperature. Become.

  When the life determination of the damper 34 is performed in this way, subsequently, in step 112, it is determined whether or not the damper 34 has a life as a result of the life determination. If the determination is affirmative, the process proceeds to step 114. If not, the process proceeds to step 116.

  At step 114, a replacement warning is given and the routine proceeds to step 116. As a replacement warning method, for example, the display 62 displays that the damper 34 is at the end of its life. At this time, the position and the like of the corresponding damper 34 may be displayed together.

  In step 116, it is determined whether or not building damage prediction is to be performed. In this determination, it is determined whether or not an instruction for building damage prediction has been performed by the keyboard 66, the mouse 64, or the like. If the determination is affirmative, the process proceeds to step 18, and if the determination is negative, step 126 is performed. Migrate to

  In step 118, the measurement history is read from the history DB 76B, and the process proceeds to step 120. That is, the displacement amount and temperature measurement result stored in step 104 are read out.

  In step 120, building damage prediction is performed and the routine proceeds to step 122. In the building damage prediction, for example, the presence / absence of plasticization, the maximum plastic ratio, the cumulative plastic deformation ratio, and the like can be calculated from the detection result of the displacement sensor 82 of each damper 34 provided in the house. The damage degree of the ramen structure can be predicted by obtaining at least one damage degree among the maximum resuscitation rate and the cumulative deformation magnification. Further, since the correlation between the degree of damage in the condition DB 76A (cross breakage, baseboard removal, etc.) and interlayer deformation is read and the detection result of the displacement sensor 82 corresponds to the interlayer deformation, building damage prediction is obtained by determining the corresponding damage degree. It can be performed. Furthermore, the energy consumed by the deformation of the building can be estimated from the load-displacement characteristics of the structure and the non-structure. For example, since the rigidity and proof stress of a building are known, a history of load and displacement can be obtained from displacement × rigidity = load, and energy consumption can be obtained from these.

  When building damage prediction is performed, the damage state of the building may be predicted by comparing the previously calculated damage degree with the currently calculated damage degree. That is, by comparing with the past damage degree, it is also possible to predict the degree of progress of the damage situation and determine whether or not the repair is necessary immediately.

  Subsequently, in step 122, it is determined whether or not repair is necessary. The determination is made by comparing the result of building damage prediction in step 120 with a predetermined threshold value or the like to determine whether or not refurbishment is necessary. If the determination is affirmative, the process proceeds to step 124 and denied. If YES, go to step 126.

  In step 124, a renovation warning is given and the process proceeds to step 128. As the repair warning method, for example, the fact that the repair is Niucho is displayed on the display 62. At this time, the corresponding part may also be displayed.

  In step 126, it is determined whether to stop the system. For example, the determination determines whether or not an instruction to stop the power supply is performed due to maintenance of the vibration suppression system 50 or the like. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the series of processing ends.

  As described above, in the house 10 according to the present embodiment, the vibration damping system 50 can determine the life of the damper 34 by monitoring the displacement amount and temperature of the damper 34 and storing the history. Can predict building damage.

By the way, as shown in FIG. 7A, the vibration damping device 30 considers the influence of torsion by arranging one or more vibration damping devices 30 along the outer peripheral portion (or close to it) facing each direction. It is possible to determine the degree of damage.

  For example, when the rigid center K and the center of gravity G are shifted as shown in FIG. 7A, the building is easily twisted, and when a horizontal force acts in the Y direction, as indicated by arrows in FIG. The amount of displacement varies depending on the part. At this time, when the vibration damping device 30 in FIG. 7A is in a state in which one place in each direction is eliminated, if the degree of damage is determined as the interlayer displacement of the building as measured by the measuring instrument 80, the building is easily twisted. 7 (for example, a building having a larger deviation between the rigid center K and the center of gravity G) has a worse accuracy of determining the degree of damage, and may be determined to be excessively safe or excessively dangerous than actual. As shown in (B), by disposing one or more damping devices 30 along the outer peripheral portion, it is possible to make different determinations depending on whether the displacement is large or small, and there is no damping device 30. Since the inter-layer displacement can also be predicted by back calculation, it is possible to accurately determine the damage level even in a building that is easily twisted.

  In the above embodiment, the vibration suppression system 50 has been described as being configured to be provided in the house 10. However, the present invention is not limited to this. For example, the function of the vibration suppression system 10 is provided in the network-connected data server 78. The information of the measuring instrument 80 provided in the damper 34 of the vibration damping device 30 of the house 10 may be acquired from the data server 78, and the data server 78 may determine the life of the damper 34 or predict building damage.

10 Housing with Damping System 30 Damping Device 34 Damper 50 Damping System 52 Personal Computer 76 DB
76A Condition DB
76B History DB
80 Measuring instrument 82 Displacement sensor 84 Temperature sensor

Claims (6)

A damping device having a damper provided in the structure to attenuate the vibration caused by the earthquake;
Detecting means for detecting information on at least one of a displacement amount of the damper and a temperature related to the damper when the vibration is attenuated;
Estimating means for estimating the life of the damper based on the detection result of the detecting means;
Condition storage means for storing a correlation between the oil temperature in the damper or the surface temperature of the damper and the degree of deterioration of the damper as a condition for determining the life of the damper;
Equipped with a,
The detection unit detects the oil temperature in the damper or the surface temperature of the damper, and the estimation unit estimates the life of the damper by reading the degree of deterioration corresponding to the detection result of the detection unit. Housing with system. The apparatus further comprises history storage means for storing at least one of the displacement amount and the temperature detected by the detection means as a history, and the estimation means is based on the history stored in the history storage means. The house which has the damping system of Claim 1 which estimates the lifetime of a damper. Based on the amount of displacement detected by the detection means, calculating the degree of damage of at least one of the presence / absence of plasticization, the maximum plastic ratio, and the cumulative plastic deformation ratio, the structure of the structure provided with the damper The house which has the vibration suppression system of Claim 1 or Claim 2 further provided with the prediction means which estimates a damage degree . 4. The house having a vibration damping system according to claim 3 , further comprising warning means for giving a warning of replacement or maintenance when a degree of damage greater than a predetermined value is predicted by the prediction means . 5. The house having the vibration damping system according to claim 3, wherein the prediction unit predicts a damage state of the building by comparing the damage degree calculated last time with the damage degree calculated this time . The house which has the damping system of any one of Claims 1-5 which have the said damping device 1 or more in the outer peripheral part of each direction of a house.

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