JP7628564B2 - Monitoring system and monitoring method for existing structures - Google Patents

Description

The present invention relates to a monitoring system and method for existing structures that can easily visualize information and situations that change in real time, allowing supervisors and workers to accurately understand the information and situations.

Patent documents 1 to 4 are known as technologies that can be used to monitor and manage the construction status of civil engineering and construction works.

The "construction management device for civil engineering and construction work" of Patent Document 1 aims to reduce the burden on workers in civil engineering and construction work and to perform rapid construction management based on accurate and appropriate information, and is equipped with a design shape data storage means for storing design shape data of the construction surface to be constructed, a current shape data acquisition means for acquiring current shape data of the construction surface formed during the construction process, a construction status management information creation means for creating construction status management information consisting of the degree of agreement between the design shape data and the current shape data based on a comparison between the design shape data and the current shape data, and a display control means for displaying the construction status management information in association with the construction surface in the construction process using a transparent wearable terminal worn by the worker.
The "tunnel face displacement monitoring device" of Patent Document 2 has the objective of quickly reporting displacement of a tunnel face based on accurate and appropriate information, without relying on the senses of workers or supervisors during tunnel excavation work, and is equipped with initial shape data acquisition means for acquiring initial shape data of the formed face, initial shape data storage means for storing the acquired initial shape data of the face, current shape data acquisition means for acquiring current shape data of the face, face displacement information creation means for creating face displacement information indicating the difference between the initial shape data and the current shape data based on a comparison between the stored initial shape data of the face and the acquired current shape data, and display control means for displaying the face displacement information in association with the face using a transparent wearable terminal worn by the worker.

The "tunnel face monitoring method" of Patent Document 3 aims to provide a tunnel face monitoring method that can constantly monitor the tunnel face to grasp the state of the tunnel face in real time and prevent industrial accidents due to the tunnel face falling, collapse, or collapse. A face behavior grasping means using a laser rangefinder or the like monitors the amount of extrusion of the tunnel face based on changes in real-time measurement data, and when a preset management standard value for the change in the measurement data is exceeded, a high-speed laser irradiation unit such as a green laser marks the area around the measurement point at the tunnel face where the management standard value is exceeded. At the same time, the real-time changes in the tunnel face are visualized on the wearable device, allowing constant monitoring to predict the tunnel face falling, collapse, or collapse.

The "Ground Construction Machine Control Method and Ground Construction Machine" of Patent Document 4 is a control method for a ground construction machine for constructing a ground improvement body in the ground, which includes the steps of lowering a rod to the lower end position of the ground improvement body, sequentially raising the rod from the lower end position of the ground improvement body and stopping it at target positions at predetermined intervals, storing the distance traveled from the stop command to the actual stop of the rod as the previous braking distance when the rod stops at the target position, and outputting a stop command at a position the previous braking distance before the next target position when the rod stops at the next target position. In this case, the terminal for operating and monitoring the ground construction machine from outside the machine can be a mobile terminal such as a tablet terminal, a body-worn computer called smart glasses, an AR (augmented reality) monitor, etc.

JP 2018-104933 A JP 2018-104934 A JP 2019-199708 A JP 2020-084502 A

The background technology visualizes and displays construction status management information, face displacement information, and changes in the face status on a wearable device, etc.

This type of technology can also be applied to cases such as monitoring the various behaviors that occur in existing structures due to the influence of civil engineering and construction work being carried out nearby.

However, even though these background technologies visualize various types of information and changing conditions, they are insufficient in terms of whether they are easy for supervisors and workers to see.

In particular, with information and situations changing in real time, it is important that the visualized information and situations can be accurately understood by observers and others without misunderstanding, and for this reason, there was a need to devise a method for visualizing the information in an easy-to-read manner.

The present invention was devised in consideration of the above-mentioned problems with the conventional technology, and aims to provide a monitoring system and method for existing structures that can easily visualize information and situations that change in real time, allowing supervisors and workers to accurately grasp the information and situations.

The monitoring system for an existing structure according to the present invention is a system for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work carried out in the vicinity of the existing structure, and is equipped with a displacement meter that measures the amount and direction of displacement occurring at the measurement position of the existing structure, and a communication terminal having a display that displays images, and the communication terminal includes a receiving unit that receives information from a design information storage unit that stores design information including the measurement position and a construction information storage unit that stores construction information including the amount and direction of displacement input from the displacement meter, a model storage unit that stores a three-dimensional vector model in which the amount of displacement is represented by a change in the length of the shaft and the direction of displacement is represented by the direction of the pointed tip at the end of the shaft, a model generation unit that reads out the vector model from the model storage unit and generates the vector model in real time according to the amount of displacement and the direction of displacement from the construction information storage unit received by the receiving unit, and a display processing unit that displays an image of the vector model generated by the model generation unit on the display in association with the measurement position from the design information storage unit received by the receiving unit.

The communication terminal is equipped with an image capturing means, and the display processing unit is characterized in that it associates the vector model with the measurement position, superimposes the vector model on an image of the measurement position captured by the image capturing means, and displays the image on the display.

The design information storage unit stores multiple risk level control values for the amount of displacement, and the model storage unit sets a different display color for each of the risk level control values. The model generation unit reads out the display color from the model storage unit according to the risk level control value from the design information storage unit and the amount of displacement from the construction information storage unit received by the receiving unit, and generates the vector model with the display color of the risk level control value corresponding to the amount of displacement.

When the amount of displacement shifts to the higher danger side of the risk level management value, the model generation unit outputs an instruction to the display processing unit to display the vector model on the display in the display color of the shifted risk level management value for a predetermined period of time to alert the user.

The model storage unit stores a three-dimensional skeleton cylinder model that gradually represents multiple risk level control values, with the risk level control value being the upper limit, and the model generation unit reads out the skeleton cylinder model from the model storage unit and generates in real time a risk management model that displays the skeleton cylinder model superimposed on the vector model, and the display processing unit displays an image of the risk management model generated by the model generation unit on the display in association with the measurement position.

The monitoring method for an existing structure according to the present invention is a method for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work carried out in the vicinity of the existing structure, and is characterized in that it involves inputting design information including measurement positions for measuring the displacement occurring in the existing structure into a communications terminal, measuring the amount and direction of displacement occurring at the measurement positions, inputting the measured amount and direction of displacement into the communications terminal, generating in real time a three-dimensional vector model in which the amount of displacement is represented by a change in the length of the shaft and the direction of displacement is represented by the direction of the pointed tip at the end of the shaft, and displaying an image of the vector model on a display of the communications terminal in association with the measurement positions.

The communication terminal is characterized in that it includes an image capturing means, and the communication terminal causes the vector model to be displayed on the display in association with the measurement position and superimposed on an image of the measurement position captured by the image capturing means.

A plurality of risk level control values for the amount of displacement are input to the communication terminal, and a different display color is preset in the communication terminal for each of the risk level control values. When generating the vector model, the communication terminal generates the vector model in the display color of the risk level control value corresponding to the amount of displacement.

When generating the vector model, when the amount of displacement shifts to the greater danger side of the risk level management value, the communication terminal displays the vector model on the display for a predetermined period of time in the display color of the shifted risk level management value to call attention.

When generating the vector model, the communication terminal generates a three-dimensional skeleton cylinder model that gradually represents a number of the risk level management values, with the upper limit being the upper limit of the risk level management values, and generates in real time a risk management model that displays the vector model superimposed on the skeleton cylinder model, and displays the risk management model as an image on the display of the communication terminal in association with the measurement position.

The monitoring system and method for existing structures of the present invention can easily visualize information and situations that change in real time, allowing supervisors and workers to accurately grasp the information and situations.

1 is an explanatory diagram showing an example of the implementation status of a civil engineering and construction work to which a preferred embodiment of a monitoring system and a monitoring method for an existing structure according to the present invention is applied; FIG. 2 is an explanatory diagram showing an example of the implementation status of the civil engineering and construction work shown in FIG. 1 in a vertical cross section. FIG. 2 is an explanatory diagram showing an example of the implementation status of the civil engineering and construction work shown in FIG. 1 in a plan view. 1 is a configuration diagram of a monitoring system for an existing structure according to the present invention. 5 is an explanatory diagram of a vector model and a risk management model that are generated and displayed in the monitoring system for the existing structure shown in FIG. 4 . 5 is an explanatory diagram of a skeleton cylinder drilling model, a cylinder construction model, and a construction management model that are generated and displayed by the monitoring system for existing structures shown in FIG. 4 .

Below, a preferred embodiment of the monitoring system and monitoring method for existing structures according to the present invention will be described in detail with reference to the attached drawings.

Figures 1 to 3 show an example of civil engineering and construction work being carried out near an existing structure 1.

The illustrated example shows a case where ground improvement work (also called ground improvement body construction work; the same applies below) is carried out in the void area R between adjacent existing structures 1 (the area extending from the ground surface S to the ground's design depth (floor level L2 of the second basement floor)).

In the underground portion of each existing structure 1, there exists an underground space U, such as an underground passage, waterway, and railway track, due to box culverts, etc.

The ground improvement work in the illustrated example involves using a ground improvement machine 2 brought to the ground surface S of the void area R to drill holes 3 in the ground of the void area R sandwiched between the underground space U, and then mixing the original ground soil resulting from the drilling of the holes 3 with a cement-based solidification material to create a columnar ground improvement body 4 in the ground.

The ground improvement machine 2 also serves as a drilling machine for the drilling work carried out in constructing the ground improvement body 4.

In order to monitor various behaviors that may occur in the existing structure 1 due to ground improvement work, specifically in this embodiment, a displacement meter 5 is used to monitor the subsidence displacement and uplift displacement that occur in the existing structure 1.

In the illustrated example, the displacement meters 5 are installed within the underground space U where the monitor P can perform monitoring, and are positioned at each of a number of measurement positions (..., _Xn-1 , _Xn , _Xn+1 , Xn ₊₂ , ..., Yn _-1 , _{Yn , Yn+1} , Yn ₊₂ , ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...) set for the existing structure 1 in the construction design.

Each displacement meter 5 is configured to measure the amount and direction of displacement occurring at each measurement position (..., Xn _-1 , _Xn , _{Xn + 1} , Xn _{+2 ,} ..., Yn _-1 , Yn, Yn+1, Yn+2, ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...).

As shown in FIG. 4, the monitoring system for existing structures according to this embodiment includes various sensors provided on the ground improvement machine 2 to obtain information on the construction status of the ground improvement work, the displacement meter 5 described above, a server 6 such as a cloud server that includes at least a design information storage unit 6a that stores design information for the ground improvement work in advance and a construction information storage unit 6b that stores construction information for the ground improvement work obtained by the various sensors and the displacement meter 5 of the ground improvement machine 2 in real time, and a communication terminal 8 that has a display 7 for displaying images and obtains information from the server 6 via a communication network such as Wi-Fi communication. The method for monitoring an existing structure 1 is carried out using this monitoring system.

The design information memory unit 6a of the server 6 pre-stores design information including the measurement positions where the displacement meters 5 will be placed (..., _{Xn-1 , Xn, Xn+1 , Xn + 2} , ..., _Yn-1 , Yn, Yn+1, _Yn+2 , ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...), risk level control value, construction positions of drilling holes 3 (..., An _-1 , _An , _An+1 , An ₊₂ , ...), construction depth of drilling holes 3, drilling diameter, construction position of ground improvement body 4 (same as the construction position of drilling hole 3), construction height of ground improvement body 4 (also called "construction height"; same below), and the outer diameter dimensions of the ground improvement body 4.

The construction information storage unit 6b of the server 6 stores in real time the amount and direction of displacement of the existing structure 1 measured by the displacement meter 5, which are input from various sensors and the displacement meter 5 of the ground improvement machine 2, the completed depth of the drilled hole 3 (or the depth being constructed; the same applies below) calculated from the amount of descent of the rotating rod of the ground improvement machine 2, and the completed construction height of the ground improvement body 4 calculated from the amount of ascent of the rotating rod.

Regarding the completed depth, the construction information storage unit 6b stores a flag indicating whether it is "drilling" or "construction" (described later) and the number of rotations of the rotating rod for work provided on the ground improvement machine 2, and the calculation function of the communication terminal 8, which receives this data at the receiving unit 8a (described later), first determines the construction start depth from the number of rotations of the rotating rod in the initial state, and then calculates the completed depth from the difference between the number of rotations of the rotating rod received in real time and the number of rotations in the initial state. This is also the case when calculating the construction height (described later).

In this embodiment, a see-through wearable terminal is used as the communication terminal 8. See-through wearable terminals are well known, and are configured such that a display 7 is incorporated into see-through glasses, and an image displayed on the display 7 is superimposed on the area visible through the glasses, so that it can be seen by the observer P.

The communication terminal 8 includes a display 7 and at least a receiving unit 8a, a model calculation unit 8b, a display processing unit 8c, and a display instruction unit 8d, as shown in FIG. 4.

The receiving unit 8a is configured to receive the various information described above from the server 6, the design information storage unit 6a, and the construction information storage unit 6b.

The model calculation unit 8b is composed of a model storage unit 8e and a model generation unit 8f. As shown in Figures 5 and 6, the model storage unit 8e prestores a three-dimensional vector model 9, a display color assigned to the vector model 9, a three-dimensional skeleton cylinder model 10, a three-dimensional skeleton cylinder drilling model 11, and a three-dimensional cylinder construction model 12.

The model generation unit 8f reads out various models from the model storage unit 8e, and generates a vector model 9, a colored vector model 9, a risk management model 13, a skeleton cylinder drilling model 11, a cylinder construction model 12, and a construction management model 14, all in three-dimensional form, according to the information received by the receiving unit 8a from the design information storage unit 6a and the construction information storage unit 6b.

The display processing unit 8c displays the vector model 9, colored vector model 9, risk management model 13, skeleton cylinder drilling model 11, cylinder construction model 12, and construction management model 14 generated by the model generation unit 8f as images on the display 7 in response to instructions from the display instruction unit 8d operated by the manager P.

The image displayed on the display 7 of the communication terminal 8 is displayed on the display 7 in correspondence with the measurement positions (..., Xn _-1 , _Xn , Xn _{+ 1} , Xn _{+ 2} , ..., Yn _-1 , _Yn , Yn+1, Yn+2, ..., Zn _-1 , _Zn , _Zn+1 , Zn ₊₂ , ...), the drilling positions (..., _An-1 , _An , An ₊₁ , An ₊₂ , ...), and the construction positions of the ground improvement body.

The display images are displayed on the display 7 "associated with" the measurement positions (..., Xn _-1 , _Xn , _{Xn + 1} , Xn ₊₂ , ..., _Yn- 1, Yn, Yn+1, Yn ₊₂ , ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...) etc., meaning that images of various models generated by the model generation unit 8f can be viewed at the measurement positions (..., Xn _{- 1} , _Xn , Xn _{+ 1} , Xn _{+ 2} , ..., _Yn -1, Yn, Yn+1, Yn+2, ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...) etc. as seen from the position of the observer P.

To achieve this correspondence, it is necessary to establish a positional correlation between the position of the supervisor P and the measurement positions (..., Xn _{-1 , Xn} , _Xn+1 , Xn _{+2 ,} ..., Yn _-1 , Yn, _Yn +1, Yn+2, ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...), which are the design information, and then perform position analysis from position information obtained by the supervisor P taking a photograph of a marker containing position information installed at the construction site, or from position information using GNSS.

<<Regarding monitoring work>>
The operation of monitoring the behavior of the existing structure 1 will now be described in detail. For this monitoring operation, the communication terminal 8 is configured such that the receiving unit 8a accesses the server 6 to receive information from the design information memory unit 6a which stores design information including measurement positions (..., _Xn-1 , _Xn , _{Xn +1} , Xn ₊₂ , ..., Yn _-1 , Yn, Yn ₊₁ , Yn ₊₂ , ..., _Zn-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...) at which displacements occurring in the existing structure 1 are measured, and the construction information memory unit 6b which stores construction information input from the displacement meter 5, including the amount and direction of displacement occurring at the measurement positions (..., Xn _{- 1} , _Xn , Xn _{+ 1} , Xn _{+ 2} , ..., Yn- ₁ , Yn, Yn _{+ 1} , Yn+2, ..., Zn _- 1, Zn, Zn+1, Zn ₊₂ , ...) measured by the displacement meter 5.

For monitoring operations, the model storage unit 8e of the communication terminal 8 stores a three-dimensional vector model 9 in which the amount of displacement is represented by the change in length of the shaft portion 9a, and the direction of displacement is represented by the orientation of the pointed tip 9b at the end of the shaft portion 9a, as shown in FIG. 5. This vector model 9 is formed and displayed as an opaque image.

The model generation unit 8f of the communication terminal 8 reads the vector model 9 from the model storage unit 8e. The model generation unit 8f also generates the vector model 9 in real time according to the amount of displacement and the direction of displacement from the construction information storage unit 6b received by the receiving unit 8a.

In other words, the amount of displacement measured by the displacement meter 5 is set as the length of the shaft 9a, and a vector model 9 is generated in real time with the direction of the pointed tip 9b aligned with the direction of the displacement.

In the vector models 9 shown in Figure 5, the pointed heads 9b are all facing upward, indicating that the displacement direction is upward, i.e., the protruding direction.

When the displacement direction is a sinking direction, the displacement direction is downward, and the pointed head 9b faces downward.

In addition, the length of the shaft 9a is shorter in the vector model 9 on the left side, indicating a smaller amount of displacement, and the further to the right the shaft 9a of the vector model 9 is longer, indicating a larger amount of displacement.

The display processing unit 8c is configured to, in response to instructions from the display instruction unit 8d, display an image of the vector model 9 generated by the model generation unit 8f in real time on the display 7, in association with the measurement positions (..., Xn _{- 1} , _Xn , Xn _{+1 ,} Xn _{+2 ,} ..., Yn _-1 , _Yn , Yn _{+ 1} , Yn+2, ..., Zn-1, Zn, Zn+1, Zn ₊₂ , ...) received by the receiving unit 8a from the design information memory unit 6a.

As a result, as shown in FIG. 1, a monitor P at a monitoring position can simultaneously view, through the display 7 of a wearable terminal, which is a communication terminal 8, the measurement positions viewed through the glasses (..., Xn _-1 , _Xn , Xn _{+1 , Xn+2 ,} ..., Yn _-1 , _Yn , Yn+1, Yn+2, ..., Zn _-1 , _Zn , Zn _{+1 ,} Zn _{+2 ,} ...) and a vector model 9 displayed in correspondence with the measurement positions (..., _{Xn- 1} , _Xn , _{Xn +1} , Xn ₊₂ , ..., Yn _-1 , Yn _{, Yn+1} , Yn+2, ..., Zn-1, Zn, Zn+1, Zn ₊₂ , ...).

This allows the monitor P to accurately grasp the location where the subsidence or uplift behavior of the existing structure 1 is occurring, as well as the amount and direction of displacement.

The vector model 9 can be enlarged or reduced as desired for easy viewing by the observer P operating the display instruction unit 8d.

As described above, the monitoring system and monitoring method for an existing structure according to this embodiment can easily visualize the subsidence and uplift displacements occurring in the existing structure 1 as they change in real time, allowing the monitor P to accurately grasp the displacements.

The length of the shaft 9a and the orientation of the pointed tip 9b of the vector model 9 allow the observer P to adequately visually confirm the behavior of the existing structure 1, but it is preferable to use a risk level management value to make it easier to visually confirm at least the amount of displacement.

Multiple risk level management values for the amount of displacement are set at the design stage and pre-stored in the design information storage unit 6a.

These risk management values are received as design information from the design information storage unit 6a to the receiver 8a of the communication terminal 8.

The risk level control value is a value that classifies the magnitude of the displacement into stages, as shown in FIG. 5 as a zero reference where the displacement is zero, a first control value which is a range where the displacement is small, a second control value which is a range where the displacement is relatively large, and a control limit value which indicates the safety management limit of the displacement, along the length of the shaft 9a of the vector model 9.

In the model memory unit 8e, a different display color is pre-set for each risk level management value.

The model generation unit 8f reads out the display color from the model storage unit 8e according to the risk level management value from the design information storage unit 6a and the displacement amount from the construction information storage unit 6b received by the receiving unit 8a.

Then, the model generation unit 8f generates a vector model 9 in real time using a display color of the risk level management value corresponding to the amount of displacement.

That is, the model generation unit 8f determines the amount of displacement relative to the risk level control value, reads the display color corresponding to the risk level control value from the model storage unit 8e, and generates a colored vector model 9.

For example, as shown in FIG. 5, the vector model 9 is generated with the amount of deviation up to the first control value displayed in "blue (indicated by "・" in the figure)," the amount of deviation up to the second control value displayed in "green (indicated by "○" in the figure)," and the amount of deviation up to the control limit displayed in "yellow (indicated by "△" in the figure)," and the vector model 9 is generated with the amount of deviation exceeding the control limit displayed in "red (indicated by "×" in the figure)."

In this way, the supervisor P can visually identify the amount of displacement occurring in the existing structure 1 by distinguishing it by color of the vector model 9, and the amount of displacement can be visualized in an easy-to-see manner, allowing the supervisor P to accurately grasp it.

Furthermore, it is preferable that when the amount of displacement shifts to the higher danger side of the danger level management value, the model generation unit 8f outputs to the display processing unit 8c an instruction to display the vector model 9 on the display 7 for a predetermined period of time in the display color of the shifted danger level management value, thereby calling attention.

For example, in FIG. 5, when the second management value is exceeded and the green vector model 9 changes to a yellow vector model 9, even if the amount of displacement decreases and falls below the second management value, the model generation unit 8f outputs an instruction to the display processing unit 8c to display the yellow vector model 9 on the display 7 for a predetermined time.

The same is true when the first control value is exceeded and the blue vector model 9 changes to a green vector model 9, and when the control limit value is exceeded and the yellow vector model 9 changes to a red vector model 9.

This allows the supervisor P to understand that the amount of displacement is tending to increase, and prevents the supervisor P from misunderstanding the displacement situation occurring in the existing structure 1.

Furthermore, in order to allow the supervisor P to easily visually recognize the risk level management value, it is preferable to display the risk level management value superimposed on the vector model 9.

In this case, the model storage unit 8e stores a three-dimensional skeleton cylinder model 10 that represents multiple risk level control values, such as a first control value and a second control value, in stages, with the upper limit set to the control limit value of the risk level control value, as shown in FIG. 5.

As shown in the figure, the three-dimensional skeleton cylinder model 10 is configured by displaying a transparent cylinder with an outline line, and by displaying graduated scale lines 10a in the circumferential direction of the skeleton cylinder model 10 at positions where the displacement amount is the zero reference, the first control value, the second control value, and the control limit value, taking the displacement amount in the height direction of the cylinder.

Then, the model generation unit 8f reads out the skeleton cylinder model 10 from the model storage unit 8e, and overlays the above-mentioned colored vector model 9 (which may be a simple vector model 9 without a display color) on the skeleton cylinder model 10 to generate a risk management model 13.

The risk management model 13 displays a vector model 9 overlaid on a skeleton cylinder model 10, and is configured, for example, by displaying an opaque vector model 9 inside the transparent cylinder of the skeleton cylinder model 10.

This risk management model 13 is also generated in real time according to the amount and direction of displacement from the construction information storage unit 6b that the receiver 8a receives in real time.

The display processing unit 8c is configured to display the risk management model 13 generated by the model generation unit 8f as an image on the display 7, in correspondence with the measurement positions (..., Xn _-1 , _Xn , _{Xn +1} , Xn ₊₂ , ..., Yn _- 1, Yn, Yn ₊₁ , Yn ₊₂ , ..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ , ...) as shown in FIG.

By comparing the scale lines 10a on the skeleton cylinder model 10 with the vector model 9 without display color or the colored vectors 9, the supervisor P can grasp the amount of displacement occurring in the existing structure 1 in correlation with the risk level control value, and can carry out monitoring duties properly and accurately without excessive burdens.

Instead of the above-mentioned vector model 9, it is also possible to simply display the numerical value of the amount of displacement measured by the displacement meter 5. This display may also be intended for cases where the control limit value is exceeded, and an alarm may also be sounded.

<About drilling work>
As shown in Figures 1 to 3, the visualization of drilling work in ground improvement work in a void area R, which may cause displacement of an existing nearby structure 1, will be described in detail.

For this drilling work, the communication terminal 8 is configured so that the receiving unit 8a accesses the server 6 to receive information from the design information memory unit 6a which stores design information including the construction position of the drilling hole 3 (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...), the construction depth from the drilling start position to the drilling end position and the drilling diameter, and from the construction information memory unit 6b which stores construction information input from the ground improvement machine 2, including the constructed depth from the drilling start position of the drilling hole 3 which changes as the drilling work progresses.

The starting point of drilling is usually on the ground surface S side, and the end point of drilling is deep inside the ground, and the depth from the starting point of drilling to the end point of drilling is the designed construction depth (also called the construction length or drilling length; the same applies below).

The completed depth is also detected by the ground improvement machine 2 based on the depth reached from the starting point of the drilling screw.

As shown in Figures 6(a) and (b), for drilling work, the model storage unit 8e of the communication terminal 8 stores a three-dimensional skeleton cylinder drilling model 11 in which the drilling diameter (which may be the diameter of the construction for ground improvement work, the same applies below), which is design information, is represented by the diameter (diameter) of the cylinder, and the completed depth, which is construction information, is represented by the length of the cylinder from the drilling start position.

The three-dimensional skeleton cylinder drilling model 11 is constructed by displaying a transparent cylinder with an outline line with vertical and horizontal grids 11a.

The model generation unit 8f of the communication terminal 8 reads out the skeleton cylinder drilling model 11 from the model storage unit 8e.

The model generation unit 8f also generates a skeleton cylinder drilling model 11 in real time according to the completed construction depth from the construction information storage unit 6b received by the receiving unit 8a.

As can be seen from the changes shown in Figures 6(a) and (b), this skeleton cylinder drilling model 11 is displayed in real time from the drilling start position at the top toward the drilling end position at the bottom up to the completed depth.

The completed drilling 3 is displayed by a skeleton cylinder drilling model 11 with the drilling depth, which is the depth from the drilling start position to the drilling end position.

The illustrated example shows a case where the designed construction depth of drilling hole 3 is from the ground surface S to floor level L2 of the second basement floor.

The display processing unit 8c is configured to display, in real time, an image of the skeleton cylinder drilling model 11 generated by the model generation unit 8f on the display 7 in correspondence with the drilling positions (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...) received by the receiving unit 8a from the design information memory unit 2a in response to instructions from the display instruction unit 8d.

As a result, as shown in Figure 1, a monitor P at a monitoring position can, through the display 7 of a wearable terminal, which is a communication terminal 8, visually identify the hole 3 being drilled or the hole 3 that has been completed, by correlating it with the wall surface UW, etc. of the underground space U visible through the glasses, and the drilling positions (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...) that are deeper inside the wall surface UW, etc. of the underground space U.

In other words, by displaying the hole drilling 3 in real time on the display 7 using the skeleton cylinder hole drilling model 11, the construction status of the hole drilling 3 can be visualized, thereby allowing the supervisor P to accurately grasp the construction status of the hole drilling 3.

The skeleton cylinder drilling model 11 is displayed at actual size, but the supervisor P may operate the display instruction unit 8d to enlarge or reduce the model to actual size as desired for easier viewing.

As described above, in this embodiment, as the drilling situation changes in real time as the construction work progresses, the skeleton cylinder drilling model 11 generated based on construction information such as the completed depth is displayed on the display 7 of the communication terminal 8, thereby making the drilling situation easily visible and allowing the supervisor P to accurately grasp it.

<About ground improvement work (ground improvement body construction work)>
As shown in Figures 1 to 3, the visualization of ground improvement work in a void area R, which may cause displacement of an existing nearby structure 1, will be described in detail.

For this ground improvement work, the communication terminal 8 is configured so that the receiving unit 8a accesses the server 6 to receive information from the design information memory unit 6a which stores design information including the construction position of the ground improvement body 4 (same as the drilling position (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...)), the construction height from the construction start position to the construction end position of the ground improvement body 4, and the outer diameter dimensions of the ground improvement body 4, and the construction information memory unit 6b which stores construction information input from the ground improvement machine 2, including the completed construction height from the construction start position of the ground improvement body 4, which changes as the ground improvement work progresses.

In terms of design, the construction position of the ground improvement body 4 coincides with the construction position (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...) of the drilling hole 3. The construction start position is usually the drilling end position of the drilling hole 3, the construction end position is a position closer to the ground surface S than the construction start position, and the height from the construction start position to the construction end position is the construction height in terms of design.

The completed construction height is detected by the ground improvement machine 2 based on the height reached by the mixing screw, which mixes the original soil and cement-based solidification material, from the starting point of construction.

As shown in Figs. 6(d) and (e), for ground improvement work, the model memory unit 8e of the communication terminal 8 stores a three-dimensional cylinder construction model 12 in which the outer diameter of the ground improvement body 4, which is design information, is represented by the diameter (diameter) of the cylinder, and the completed construction height, which is construction information, is represented by the length of the cylinder from the construction start position. The three-dimensional cylinder construction model 12 is formed and displayed as an opaque cylinder body.

The model generation unit 8f of the communication terminal 8 reads out the cylinder construction model 12 from the model storage unit 8e. The model generation unit 8f also generates the cylinder construction model 12 in real time according to the completed construction height from the construction information storage unit 6b received by the receiving unit 8a.

As described above, for the completed construction height, the construction information storage unit 6b stores a flag indicating whether it is "drilling" or "construction" (described later) and the number of rotations of the rotating rod for work provided on the ground improvement machine 2, and the calculation function of the communication terminal 8 can calculate the completed construction height by the difference between the number of rotations of the rotating rod received in real time by the receiving unit 8a and the number of rotations in the initial state.

As can be seen from the changes shown in Figures 6(d) and (e), this cylinder construction model 12 is displayed in real time from the construction start position at the lower position to the construction end position at the upper position up to the completed construction height.

The completed ground improvement body 4 is displayed by a cylindrical construction model 12 with the height from the construction start point to the construction end point (constructed construction height = construction height).

The illustrated example shows a case where the designed construction height of the ground improvement body 4 is from floor level L2 of the second basement floor to floor level L1 of the first basement floor.

In this embodiment, the model generation unit 8f is configured to generate a construction management model 14 by displaying the cylinder construction model 12 superimposed on the three-dimensional skeleton cylinder drilling model 11 in the above-mentioned drilling work.

The construction management model 14 displays the cylinder construction model 12 superimposed on the skeleton cylinder drilling model 11, and is configured, for example, by displaying the opaque cylinder construction model 12 inside the transparent cylinder of the skeleton cylinder drilling model 11.

In this embodiment, as shown in FIG. 6(c), when moving from drilling work to construction work of the ground improvement body 4, when a signal indicating the start of construction of the ground improvement body 4 stored in the construction information memory unit 6b from the ground improvement machine 2 is input to the receiving unit 8a, the model generating unit 8f switches the height of the skeleton cylinder drilling model 11 to the construction height of the ground improvement body 4 from the designed construction start position (drilling end position).

Even with this construction management model 14, the model generation unit 8f generates it in real time according to the completed construction height from the construction information storage unit 6b received by the receiving unit 8a.

The display processing unit 8c is configured to display an image of the construction management model 14 generated by the model generation unit 8f on the display 7 in real time, in correspondence with the construction positions (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...) received by the receiving unit 8a from the design information memory unit 8a in response to instructions from the display instruction unit 8d.

Of course, the display processing unit 8c may simply display the cylinder construction model 12 on the display.

As a result, as shown in Figure 1, a monitor P at a monitoring position can, through the display 7 of a wearable terminal, which is a communication terminal 8, visually identify the ground improvement body 4 under construction or the ground improvement body 4 whose construction has been completed, by correlating it with the construction positions (..., A _n-1 , A _n , A _n+1 , A _n+2 , ...) deeper inside the wall surfaces UW, etc. of the underground space U visible through the glasses, through the construction management model 14 or the cylinder construction model 12.

In other words, by displaying the ground improvement body 4 in real time on the display 7 using the construction management model 14 or the cylinder construction model 12, the construction status of the ground improvement body 4 can be visualized, thereby allowing the supervisor P to accurately grasp the construction status of the ground improvement body 4.

The image display of the construction management model 14 allows the construction status of the ground improvement body 4 to be judged by comparing it with the skeleton cylinder drilling model 11 that displays the drilling 3.

Of course, even in the case of the cylinder construction model 12, it is possible to judge the construction status of the ground improvement body 4.

Both the cylinder construction model 12 and the construction management model 14 are displayed at life-size, but the supervisor P may operate the display instruction unit 8d to enlarge or reduce them to life-size as desired for easier viewing.

As described above, in this embodiment, as the construction status of the ground improvement body 4 changes in real time as the construction work progresses, the cylinder construction model 12 or the construction management model 14 generated based on construction information such as the completed construction height is displayed on the display 7 of the communication terminal 8, thereby making it possible to easily visualize the construction status of the ground improvement body 4 and allowing the supervisor P to accurately grasp it.

In the above explanation, the communication terminal 8 is a see-through wearable terminal, but the communication terminal 8 may be a tablet-type communication terminal 8x with a display and a photographing device.

In this case, the imaging device captures images of the measurement positions (..., Xn _-1 , _Xn , Xn ₊₁ , Xn ₊₂ ,..., Yn _-1 , _Yn , Yn ₊₁ , Yn ₊₂ ,..., Zn _-1 , _Zn , Zn ₊₁ , Zn ₊₂ ,...), the drilling positions (..., An _-1 , _An , _An+1 , An ₊₂ ,...) and the construction positions as videos or the like, and the display processing unit 8c displays the measurement positions (..., Xn _-1 , _Xn , _Xn+1 , Xn ₊₂ ,..., Yn-1, _Yn , Yn _{+ 1} , Yn ₊₂ ,..., Zn _-1 , _Zn , _Zn+1 , Zn ₊₂ The above-mentioned vector model 9, colored vector model 9, risk management model 13, skeleton cylinder drilling model 11, cylinder construction model 12, and construction management model 14 generated by the model generation unit 8f can be displayed as images on the display 7 by corresponding them to the images (e.g., ...) and superimposing them on the image being captured.

In this way, even if the communication terminal 8x is a tablet-type terminal with a display and a camera, it is possible to achieve the same effects as those of the above-described embodiment.

REFERENCE SIGNS LIST 1 Existing structure 5 Displacement meter 6a Design information storage unit 6b Construction information storage unit 7 Display 8 Communication terminal 8a Receiving unit 8c Display processing unit 8e Model storage unit 8f Model generation unit 8x Communication terminal such as tablet type 9 Three-dimensional vector model 9a Axis part of vector model 9b Pointed head part of vector model 10 Three-dimensional skeleton cylinder model 13 Risk management model X, Y, Z Measurement position

Claims (10)

A system for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work being carried out in the vicinity of the existing structure, comprising:
a displacement meter that measures the amount and direction of displacement occurring at a measurement position of the existing structure;
a communication terminal having a display for displaying an image;
The communication terminal includes:
A location information acquisition means for acquiring location information of the communication terminal;
a receiving unit that receives information from a design information storage unit that stores design information including the measurement position and a construction information storage unit that stores construction information including the displacement amount and the displacement direction input from the displacement meter;
a model storage unit that stores a three-dimensional vector model in which the amount of displacement is represented by a change in the length of a shaft portion and the direction of the displacement is represented by a direction of a pointed tip at the end of the shaft portion;
a model generating unit that reads out the vector model from the model storage unit and generates the vector model in real time according to the displacement amount and the displacement direction from the construction information storage unit received by the receiving unit;
a display processing unit that displays, on the display, an image of the vector model generated by the model generation unit in association with the measurement position from the design information storage unit received by the receiving unit ,
the communication terminal is a see-through wearable terminal in which the display is incorporated in see-through glasses,
The display processing unit, based on the acquired positional information and the measurement position, overlays the vector model corresponding to the measurement position on the image of the measurement position viewed through the glass, and displays the vector model corresponding to the measurement position on the display . A system for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work being carried out in the vicinity of the existing structure, comprising:
a displacement meter that measures the amount and direction of displacement occurring at a measurement position of the existing structure;
a communication terminal having a display for displaying an image;
The communication terminal includes:
A location information acquisition means for acquiring location information of the communication terminal;
a receiving unit that receives information from a design information storage unit that stores design information including the measurement position and a construction information storage unit that stores construction information including the displacement amount and the displacement direction input from the displacement meter;
a model storage unit that stores a three-dimensional vector model in which the amount of displacement is represented by a change in the length of a shaft portion and the direction of the displacement is represented by a direction of a pointed tip at the end of the shaft portion;
a model generating unit that reads out the vector model from the model storage unit and generates the vector model in real time according to the displacement amount and the displacement direction from the construction information storage unit received by the receiving unit;
a display processing unit that displays, on the display, an image of the vector model generated by the model generation unit in association with the measurement position from the design information storage unit received by the receiving unit,
The communication terminal includes an imaging means,
A monitoring system for existing structures, characterized in that the display processing unit displays the vector model corresponding to the measurement position on the display by overlaying it on an image of the measurement position captured by the photographing means based on the acquired positional information and the measurement position. a plurality of risk level management values for the displacement amount are stored in the design information storage unit;
In the model storage unit, a different display color is set for each of the risk level management values,
The monitoring system for existing structures as described in claim 1 or 2, characterized in that the model generation unit reads the display color from the model storage unit in accordance with the hazard level control value from the design information storage unit and the displacement amount from the construction information storage unit received by the receiving unit, and generates the vector model with the display color of the hazard level control value corresponding to the displacement amount. The monitoring system for existing structures described in claim 3, characterized in that when the amount of displacement shifts to the greater danger side of the danger level management value, the model generation unit outputs an instruction to the display processing unit to display the vector model on the display in the display color of the shifted danger level management value for a predetermined period of time to alert the user. the model storage unit stores a three-dimensional skeleton cylinder model which represents a plurality of hazard level control values in stages, with a control limit value of the hazard level control value as an upper limit;
the model generation unit reads out the skeleton cylinder model from the model storage unit, and generates in real time a risk management model in which the skeleton cylinder model is superimposed on the vector model and displayed;
The monitoring system for existing structures as described in claim 3, characterized in that the display processing unit displays the risk management model generated by the model generation unit in an image on the display in correspondence with the measurement position. A method for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work carried out in the vicinity of the existing structure, comprising:
Acquire location information of the communication device,
inputting design information including measurement positions for measuring displacements occurring in the existing structure into the communication terminal;
Measure the amount and direction of displacement occurring at the measurement position;
The measured displacement amount and displacement direction are inputted into the communication terminal, and a three-dimensional vector model is generated in real time by the communication terminal, in which the displacement amount is represented by a change in length of the shaft portion and the displacement direction is represented by a direction of the pointed head at the end of the shaft portion;
displaying the vector model as an image on a display of the communication terminal in association with the measurement position ;
the communication terminal is a see-through wearable terminal in which the display is incorporated in see-through glasses,
A method for monitoring an existing structure, characterized in that the communication terminal overlays an image of the measurement position viewed through the glass based on the acquired location information and the measurement position, and displays the vector model corresponding to the measurement position on the display . A method for monitoring subsidence and uplift displacements occurring in an existing structure due to civil engineering and construction work carried out in the vicinity of the existing structure, comprising:
Acquire location information of the communication device,
inputting design information including measurement positions for measuring displacements occurring in the existing structure into the communication terminal;
Measure the amount and direction of displacement occurring at the measurement position;
The measured displacement amount and displacement direction are inputted into the communication terminal, and a three-dimensional vector model is generated in real time by the communication terminal, in which the displacement amount is represented by a change in length of the shaft portion and the displacement direction is represented by a direction of the pointed head at the end of the shaft portion;
displaying the vector model as an image on a display of the communication terminal in association with the measurement position;
The communication terminal includes an imaging means,
A method for monitoring an existing structure, characterized in that the communication terminal displays the vector model corresponding to the measurement position on the display by overlaying it on an image of the measurement position photographed by the photographing means based on the acquired location information and the measurement position . a plurality of risk level control values for the amount of displacement are input to the communication terminal, and different display colors are preset in the communication terminal for each of the risk level control values;
A method for monitoring existing structures as described in claim 6 or 7, characterized in that when generating the vector model, the communication terminal generates the vector model in the display color of the risk level management value corresponding to the amount of displacement. The method for monitoring an existing structure according to claim 8, characterized in that when the vector model is generated, the communication terminal displays an image of the vector model on the display for a predetermined period of time in the display color of the transitioned risk level management value when the amount of displacement shifts to the higher danger side of the risk level management value in order to draw attention. When generating the vector model, a three-dimensional skeleton cylinder model is generated by the communication terminal, which represents a plurality of risk level control values in stages, with the upper limit of the risk level control value being an upper limit, and a risk management model is generated in real time by superimposing the vector model on the skeleton cylinder model.
9. The method for monitoring an existing structure according to claim 8, further comprising the step of displaying an image of said risk management model on a display of a communication terminal in association with said measurement positions.

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