JP2020148467A - Estimation method of experienced maximum interlayer deformation angle and program - Google Patents

Abstract

To provide an estimation method of an experienced maximum interlayer deformation angle and a program which can perform simple and accurate estimation of the experienced maximum interlayer deformation angle without causing a difference in result between individuals.SOLUTION: There is provided a method for estimating an experienced maximum interlayer deformation angle from cracks f1 to f6 of a wall cloth generated in a corner part of openings 2a, 3a formed in walls 2, 3 of a building 1, the walls 2, 3 being provided on at least one face with a plasterboard which the wall cloth is attached to a surface of the plasterboard. In the method, a width or length of the cracks f1 to f6 is measured and the experienced maximum interlayer deformation angle is estimated from a measurement result of the cracks f1 to f6 with an estimation expression based on a preliminarily performed experimental result.SELECTED DRAWING: Figure 12

Description

The present invention relates to a method and a program for estimating the maximum empirical interlayer deformation angle.

Conventionally, in order to judge whether a building damaged by an earthquake or the like can be used, the "damage classification criteria and restoration technical guidelines for earthquake-damaged buildings" supervised by the Ministry of Land, Infrastructure, Transport and Tourism have been used (non-patented). Reference 1). Such non-patent document 1 is operated for the purpose of classifying the degree of damage to a building and determining the necessity of reinforcement for continuous use.
The amount of deformation of the building can be defined by a numerical value called the maximum interlayer deformation angle. That is, the maximum interlayer deformation angle at the time of an earthquake is related to the deterioration of the building (damage status of the building) and is one of the criteria for determining the degree of damage to the building. In Non-Patent Document 1, the largest deformation that occurs in a building during an earthquake is expressed by an angle called "experienced maximum interlayer deformation angle". Further, in Non-Patent Document 1, the maximum empirical interlayer deformation angle is a value estimated from the residual deformation after the earthquake and the damage state of the wall and the like.

Criteria for determining the degree of damage to earthquake-damaged buildings and technical guidelines for restoration (published by Japan Building Disaster Prevention Association)

By the way, as is clear from Non-Patent Document 1, some knowledge has been obtained about the correlation between the maximum empirical interlayer deformation angle and the damage state of the building. However, in reality, there is a problem that the correlation cannot be quantified and depends on the subjectivity of the viewer. That is, for example, focusing on the method of estimating the maximum empirical interlayer deformation angle of a building, it is estimated from the damage status of the interior and exterior materials, but since the numerical index of damage and the expression of the damage status are abstract, the investigator There may be individual differences in the estimation results for each.

The present invention has been made in view of the above circumstances, and provides a method and a program for estimating the maximum empirical interlayer deformation angle, which can easily and accurately estimate the maximum empirical interlayer deformation angle without causing individual differences in the results. The purpose is to provide.

The invention according to claim 1, for example, as shown in FIGS. 1 to 14, a wall 2 of a building 1 in which a gypsum board is provided on at least one surface and a wall cloth is attached to the surface of the gypsum board. Of 3, the method of estimating the empirical maximum interlayer deformation angle from the cracks f1 to f6 of the wall cloth generated in the corners of the openings 2a and 3a formed in the walls 2 and 3.
The width or length of the cracks f1 to f6 is measured, and
It is characterized in that the empirical maximum interlayer deformation angle is estimated from the measurement results of the cracks f1 to f6 by an estimation formula based on the experimental results performed in advance.

According to the invention of claim 1, the maximum empirical interlayer deformation angle and the cracks generated in the wall cloth are quantified based on the experimental results performed in advance, and the openings 2a and 3a formed in the walls 2 and 3 are formed. From the actual width or length of the cracks f1 to f6 of the wall cloth generated in the corner portion, it is possible to easily and accurately estimate the maximum empirical interlayer deformation angle by an estimation formula based on the experimental results performed in advance. , There is no individual difference in the estimation result.

The invention according to claim 2 is the method for estimating the maximum empirical interlayer deformation angle according to claim 1, for example, as shown in FIGS. 5 to 8, 12, and 14.
The estimation formula is
γe = (Bu + 0.26) / 110 ... Equation (1)
γe = (Bd + 0.66) / 180 ... Equation (2)
γe = (Lu + 43.6) / 25200 ... Equation (3)
γe = (Ld + 163.5) / 55100 ... Equation (4)
Is one of
γe: Experience maximum interlayer deformation angle (rad), Bu: Crack width (mm) generated in the upper corner portion of the openings 2a, 3a, Bd: Occurred in the lower corner portion of the openings 2a, 3a. Crack width (mm), Lu: Crack length (mm) generated in the upper corners of the openings 2a, 3a, Ld: Crack length generated in the lower corners of the openings 2a, 3a It is characterized in that it is (mm).

According to the second aspect of the present invention, the maximum empirical interlayer deformation angle can be estimated from the width or length of the cracks f1 to f6 according to the positions of the cracks f1 to f6 with respect to the openings 2a and 3a. , It is possible to improve the accuracy in estimating the maximum empirical interlayer deformation angle.

The invention according to claim 3 is the method for estimating the maximum empirical interlayer deformation angle according to claim 1 or 2, for example, as shown in FIGS. 4, 12, and 14.
It is characterized in that the degree of damage to the building 1 is determined based on the estimated maximum empirical interlayer deformation angle.

According to the invention of claim 3, since the damage degree of the building 1 is determined based on the estimated maximum empirical interlayer deformation angle, it is possible to notify the investigator and the resident of the building 1 of the damage degree. it can.

The invention according to claim 4 is the method for estimating the maximum empirical interlayer deformation angle according to any one of claims 1 to 3, for example, as shown in FIGS. 12 to 14.
The seismic performance residual rate R of the building 1 is determined based on the estimated maximum empirical interlayer deformation angle.

According to the invention of claim 4, since the seismic performance residual rate R of the building 1 is determined based on the estimated maximum experience interlayer deformation angle, the seismic performance residual rate R for the investigator and the resident of the building 1 is determined. R can be notified.

The invention according to claim 5 is the method for estimating the maximum empirical interlayer deformation angle according to any one of claims 1 to 4, as shown in FIG. 12, for example.
The estimation of the empirical maximum interlayer deformation angle is performed by the arithmetic processing unit 10.
The arithmetic processing device 10 is characterized in that it acquires measurement result information relating to the width or length of the cracks f1 to f6 measured in advance.

According to the invention of claim 5, the arithmetic processing apparatus 10 acquires measurement result information relating to the width or length of the cracks f1 to f6 measured in advance, and based on this, the empirical maximum interlayer deformation angle. Since the estimation can be performed, the maximum empirical interlayer deformation angle can be easily estimated by the arithmetic processing apparatus 10 as long as the crack width and the length are measured in advance.

The invention according to claim 6 is the method for estimating the maximum empirical interlayer deformation angle according to claim 5, as shown in FIGS. 12 and 14, for example.
The cracks f1 to f6 are photographed by the camera 16, and the arithmetic processing device 10 acquires the images of the cracks f1 to f6 photographed by the camera 16 as the measurement result information.

According to the invention of claim 6, since the arithmetic processing apparatus 10 can use the images of the cracks f1 to f6 taken by the camera 16 as the measurement result information, it is easy to measure the crack width and the length. Can be done. Therefore, it is possible to improve the convenience in estimating the maximum empirical interlayer deformation angle.

The invention according to claim 7 is a program.
A computer 10 having a storage device 12 that stores an estimation formula based on the results of experiments performed in advance.
Of the walls 2 and 3 of the building 1 in which the gypsum board is provided on at least one surface and the wall cloth is attached to the surface of the gypsum board, the corners of the openings 2a and 3a formed in the walls 2 and 3. Measurement result information acquisition means 11a for acquiring measurement result information relating to the width or length of the cracks f1 to f6 of the wall cloth generated at the corners, and
It is characterized in that the estimation formula is executed and the estimation means 11b is used to estimate the maximum empirical interlayer deformation angle from the measurement results of the cracks f1 to f6 acquired by the measurement result information acquisition means 11a.

According to the invention of claim 7, the maximum empirical interlayer deformation angle and the cracks f1 to f6 generated in the wall cloth are quantified based on the experimental results performed in advance, and the openings 2a formed in the walls 2 and 3 are formed. , 3a From the actual width or length of the cracks f1 to f6 of the wall cloth generated in the corners, the maximum empirical interlayer deformation angle can be estimated easily and accurately by the estimation formula based on the experimental results performed in advance. Is possible, and there is no individual difference in the estimation result.

According to the present invention, there is no individual difference in the results, and it is possible to easily and accurately estimate the maximum empirical interlayer deformation angle.

It is a top view which shows an example of a building damaged by an earthquake. It is a figure which shows the state which the wall cloth cracked in the corner part of the opening of a sweep-out window type. It is a figure which shows the state which the wall cloth cracked in the corner part of the opening of a high-waisted window type. It is a table showing the correlation between the experience maximum inter-story deformation angle and the damage status of the building, which is partially quoted from "Damage classification criteria and restoration technical guidelines for earthquake-damaged buildings". It is a graph which shows the experimental result which showed the correlation between the crack width which occurred in the upper corner part in the opening and the experience maximum interlayer deformation angle. It is a graph which shows the experimental result which showed the correlation between the crack width which occurred in the lower corner part in the opening and the experience maximum interlayer deformation angle. It is a graph which shows the experimental result which showed the correlation between the crack length which occurred in the upper corner part in the opening and the experience maximum interlayer deformation angle. It is a graph which shows the experimental result which showed the correlation between the crack length which occurred in the lower corner part in the opening and the experience maximum interlayer deformation angle. It is a table which shows the summary of the structural calculation result and the estimation result of the experience maximum interlayer deformation angle in the building damaged by the earthquake. It is a graph which shows the seismic performance evaluation result of the building (property A) damaged by an earthquake. It is a graph which shows the seismic performance evaluation result of the building (property B) damaged by an earthquake. It is a figure which shows the outline of the arithmetic processing unit. It is a table showing the relationship between the maximum experience interlayer deformation angle and the seismic performance residual rate quoted from "Criteria for determining the degree of damage of earthquake-damaged buildings and restoration technical guidelines". It is a flowchart explaining the method of estimating the experience maximum interlayer deformation angle.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, although the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Absent.

In FIG. 1, reference numeral 1 indicates a building. This building 1 is a wooden house damaged by an earthquake with a maximum seismic intensity of 7, and has a first floor 1a and a second floor 1b. A wall cloth is attached to the wall of the first floor 1a and the wall of the second floor 1b as a finishing material for the interior side surface.

Of the wall of the first floor 1a and the wall of the second floor 1b, cracks (crevices) in the wall cloth are generated due to the deformation of the wall due to the earthquake at a plurality of places pointed by the triangular mark “▲”. Cracks in such wall cloths are more likely to occur in walls with openings than in walls without openings.

The wall 2 shown in FIG. 2 is provided at any position on the first floor 1a or the second floor 1b of the building 1, and a plurality of cracks f1, f2, and f3 are formed on the wall cloth. The wall 2 is formed with an opening 2a forming a so-called sweep-out window assuming the entry and exit of a person, and a plurality of cracks f1, f2, and f3 are generated around the opening 2a (corner corner). There is.

The wall 3 shown in FIG. 3 is provided at any position on the first floor 1a or the second floor 1b of the building 1, and a plurality of cracks f4, f5, and f6 are formed on the wall cloth. The wall 3 is formed with an opening 3a forming a so-called high-waisted window that is not supposed to allow people to enter and exit, and a plurality of cracks f4, f5, and f6 are formed around the opening 3a (corner corner). It is happening.

The walls 2 and 3 shown in FIGS. 2 and 3 are provided with gypsum board on one surface, and a wall cloth is attached from above. A siding material is provided on the other surface.

Figure 4 shows the maximum experience layer deformation angle and damage level, and interior materials (finishing material: wall cloth) partially quoted from the "Disaster Degree Classification Judgment Criteria and Restoration Technical Guidelines" supervised by the Ministry of Land, Infrastructure, Transport and Tourism. It is a table showing the correlation with the damage situation at the opening of the exterior material (siding).

By collating the plurality of cracks f1 to f6 generated in the wall cloths of the walls 2 and 3 with the table shown in FIG. 4, the maximum empirical interlayer deformation angle can be derived, and the maximum empirical interlayer deformation angle can be obtained. It is possible to derive the degree of damage to the building.

However, the correlation between the maximum empirical interlayer deformation angle and the damage status of the building (here, cracks f1 to f6 of the wall cloth) has not been quantified. That is, if only the table shown in FIG. 4 was followed, it was not possible to quantitatively determine at which stage the cracks f1 to f6 of the wall cloth were in the table shown in FIG.

Therefore, in the present embodiment, a method and a program for estimating the maximum empirical interlayer deformation angle based on the length and width of the cracks f1 to f6 of the wall cloth, and by extension, the degree of damage to the building will be described.

Here, when the building 1 is deformed in the horizontal direction due to the seismic force, the horizontal deformation relative to the lower floor of each floor is called "interlayer deformation", and the value obtained by dividing the value by the "floor height" is ". It is called "interlayer deformation angle". The inter-story deformation angle changes from moment to moment due to the horizontal shaking of the earthquake, but the maximum absolute value in the duration is called the "maximum inter-story deformation angle", and in particular, the most that occurred in building 1 during the earthquake. The large deformation is called the "experienced maximum interlayer deformation angle".

In the method of estimating the maximum empirical interlayer deformation angle, first, a static horizontal force test of a wall test piece constructed in the same manner as a building such as a house to be sold is performed, and the wall cloth is cracked. The applying method is an in-plane shear experiment using a fixed column base, and a hydraulic jack is connected to the applying girder provided at the upper end of the wall of the test piece, and static application is performed by this hydraulic jack. The force schedule is displacement control based on the apparent shear deformation angle, and is 1/600, 1/450, 1/300, 1/200, 1/150, 1/100, 1/75, 1/50, 1/30. , 1/15 rad (hereinafter, specific deformation angle) is repeated a plurality of times in a positive and negative police box. However, only at 1/15 rad, the force is applied once positively and negatively. The unit rad is a radian, which is a unit of an angle (plane angle) in the International System of Units. Also called radian.
The horizontal load is measured by a load cell installed between the force girder and the hydraulic jack, and the horizontal displacement of the force girder and the base and the vertical displacement of the column are measured by a displacement meter.

The time to record the damage (crack) of the wall cloth is assumed to be the state after the earthquake, and the load is removed from the specific deformation angle and the specific deformation angle at the time of the third positive and negative repeated loading at the above specific deformation angle. When the load becomes 0 (hereinafter, when the load is 0) and when the horizontal displacement becomes 0 after further unloading (hereinafter, when the displacement is 0).
The method of observation recording is to record the width and length of cracks by visual inspection by an observer and using a crack scale.

As a result of conducting such an experiment, the wall cloth at the corner of the opening of the wall, which is the test piece, cracked after 1/100 rad, and the crack passed up and down at 1/75 rad. The crack width at the time of unloading from the deformation angle became large. The main damage conditions observed on the finished surface where the wall cloth is attached to the gypsum board are twisting, swelling and cutting of the wall cloth, cracking and crushing of the gypsum board, floating and peeling out of the surface, gypsum. The boards were misaligned and the screws were floating, punching out, cutting and pulling out. Regarding cracks at the corners of the opening, the crack width differs between the force on the opening side and the force on the closing side when deformed and when the load is 0, but there is no big difference when the displacement is 0. The same tendency was obtained depending on whether the wall as the test body was the inner wall or the outer wall, and the difference in the opening shape and the allocation method. The crack length was the same regardless of the applying direction, and was almost the same at the time of displacement, at 0 load, and at 0 displacement.

Regarding the correspondence between the state of the test piece and the actual building 1 in the above experiment, it is assumed that the maximum empirical interlayer deformation angle is the specific deformation angle at the time of the experiment and the state of the building 1 after the earthquake is the displacement of 0 at the time of the experiment. .. Then, the maximum empirical interlayer deformation angle of the building 1 after the earthquake is estimated by paying attention to the damage state at the specific deformation angle and the displacement at 0 after unloading in the experiment, particularly the crack width and length of the opening corner.

The relationship between the maximum empirical interlayer deformation angle and the crack width and length at the upper and lower corners of the sweep-out window type opening and the upper and lower corners of the high-waisted window type opening is shown in FIGS. 5 to 8. .. FIG. 5 is a graph showing the experimental results showing the correlation between the crack width generated at the upper corner of the opening and the empirical maximum interlayer deformation angle. FIG. 6 is a graph showing the experimental results showing the correlation between the crack width generated at the lower corner of the opening and the empirical maximum interlayer deformation angle. FIG. 7 is a graph showing the experimental results showing the correlation between the crack length generated at the upper corner of the opening and the empirical maximum interlayer deformation angle. FIG. 8 is a graph showing the experimental results showing the correlation between the crack length generated at the lower corner of the opening and the empirical maximum interlayer deformation angle.
For each of the crack width and length, the average value (Ave) and standard deviation (σ) are calculated for each empirical maximum interlayer deformation angle, and the approximate straight line for each of the average value and average value ± σ is used as the empirical maximum interlayer deformation angle. It is shown in the figure as an index to estimate.

Further, the estimation formulas of the empirical maximum interlayer deformation angle using the approximate straight line of the average value are shown in the following formulas (1) to (4). For cracks in the sweep-out window type opening and the high-waisted window type opening of building 1, the intersection with the straight line of the average value can be estimated as the deformation angle experienced by the wall, and the average value ± σ is shown as the range of variation. ..
Equation (1): γe = (Bu + 0.26) / 110
Equation (2): γe = (Bd + 0.66) / 180
Equation (3): γe = (Lu + 43.6) / 25200
Equation (4): γe = (Ld + 163.5) / 55100
In these equations (1) to (4),
γe: Experience maximum interlayer deformation angle (rad)
Bu: Crack width (mm) generated at the upper corner of the opening
Bd: Crack width (mm) generated at the lower corner of the opening
Lu: Crack length (mm) generated at the upper corner of the opening
Ld: Crack length (mm) generated at the lower corner of the opening
It is said.

However, if the cracks on the gypsum board increase with deformation, the cracks will be crushed due to repeated deformation during an earthquake, making it difficult to measure the cracks. Therefore, the applicable range is 1/50 rad. It is judged that it exceeds / 50 rad. 1/300 rad to 1/100 rad when the cut of the wall cloth in the flat part of the wall which is not the corner of the opening passes up and down, 1/150 rad due to the remarkable floating of the screw, 1/30 rad when the screw comes off or punches out. , Is an estimation index of the maximum empirical interlayer deformation angle.

In addition, the applicant conducted an earthquake damage survey after the Kumamoto earthquakes that occurred on April 14 and 16, 2016, and estimated the maximum experience interlayer deformation angle for the properties (property A and B) in Mashiki Town. In the damage investigation, the maximum empirical interlayer deformation angle was estimated from the crack width generated at the inner wall opening and the estimation formula of the formula (1), and the results are shown in the table of FIG. The cracks in the damage survey were measured for the width of the largest part visually due to the survey time.

The table of FIG. 9 shows the results of the limit strength calculation of the survey properties A and B. The safety factor of the first floor against the layer shear force at the safety limit is 3.6 times in the X direction and 2.6 times in the Y direction for property A, and 2.8 times in the X direction and 3.0 times in the Y direction for property B. It was.

In FIGS. 10 and 11, KiK-net Mashiki and the Japan Meteorological Agency Mashiki observed in the building standard method (at the safety limit) and in the vicinity from the reduction rate and equivalent period due to attenuation calculated from the skeletal curve reduced to one degree of freedom system. The relationship between the response values obtained by calculating the required yield strength curve of the seismic wave of Machimiyazono is shown, and the interlayer deformation angle due to them is shown in FIG. The inter-story deformation angle of the first floor by the limit strength calculation was 1/276 rad in the X direction of the property A and 1/286 rad in the Y direction of the property B.

The interlayer deformation angle with respect to the observed seismic wave is 1/74 to 1/303 rad in the X direction of the property A and 1/78 to 1/274 rad in the Y direction of the property B, and the estimation result of the empirical maximum interlayer deformation angle is 1 respectively. It is / 180 (variation range 1/305 to 1/125) rad and 1/155 (variation range 1/245 to 1/110) rad, and it is generally experienced compared with the response value by the observed seismic waves in the surrounding area. It is considered that the maximum interlayer deformation angle can be estimated.

The applicant conducted a static loading experiment on the wall to show the relationship between the cracks that occur in the upper and lower corners of the opening and the maximum empirical interlayer deformation angle, and the crack width that occurs in the upper and lower corners of the opening. We proposed a method to quantitatively estimate the maximum empirical interlayer deformation angle from the length. Furthermore, as a result of trying to estimate the maximum empirical interlayer deformation angle using the damage survey in the actual damaged house, the estimation result is generally valid and quantitative by comparing with the structural calculation result and the interlayer deformation angle due to the surrounding observation seismic waves. Experience It was confirmed that it can be used as a method for estimating the maximum interlayer deformation angle.

Based on the above, it is possible to estimate the maximum empirical interlayer deformation angle from the crack width and length generated at the upper and lower corners of the opening, and by extension, the degree of damage to the building. ing. Then, such an empirical maximum interlayer deformation angle can be estimated by the arithmetic processing unit 10.

As shown in FIG. 12, the arithmetic processing unit 10 is a computer having a storage unit 12, a display unit 13, an input unit 14, a communication unit 15, a microprocessor (control unit 11), and the like. For example, the arithmetic processing device 10 includes a mobile phone (for example, a smartphone, a feature phone), a PDA (Personal Digital Assistant), a desktop personal computer, a laptop personal computer (notebook personal computer), a palmtop personal computer, and a tablet. A type personal computer, etc.

The control unit 11 controls the entire arithmetic processing unit 10 including the storage unit 12 and the like based on a control program (not shown) stored in the storage unit 12, and also measures measurement result information acquisition means 11a and maximum experience. The functions as the interlayer deformation angle estimation means 11b, the damage degree determination means 11c, and the seismic performance residual rate determination means 11d are executed.

The storage unit 12 includes a large-capacity storage medium such as a hard disk drive or a flash memory, and a semiconductor storage medium such as a ROM or RAM. The control program is stored in the storage unit 12, and various data required for the control operation of the control unit 11 are temporarily stored. Further, the storage unit 12 stores estimation formula data 12a, damage degree determination data 12b, and seismic performance residual rate determination data 12c.

The display unit 13 is a display device in the arithmetic processing unit 10, and for example, a liquid crystal display or the like is adopted. The display unit 13 in the present embodiment is incorporated in the housing of the arithmetic processing device 10, and displays the display screen on the display surface based on the display control signal by the control unit 11.

The input unit 14 is an input device in the arithmetic processing unit 10, and for example, a keyboard, a mouse, or the like is adopted. The input unit 14 in the present embodiment is incorporated in the housing of the arithmetic processing device 10, and can input characters and the like on the display screen of the display unit 13.

The communication unit 15 receives the communication signal from the control unit 11 and sends the communication signal to a network such as LAN or WAN. Further, the communication unit 15 receives the communication signal from the network and outputs the communication signal to the control unit 11. The communication unit 15 in this embodiment is built in the housing of the arithmetic processing unit 10.

Further, a camera 16 is connected to the arithmetic processing unit 10. In this embodiment, the camera 16 is used to photograph the cracks formed in the wall cloth. That is, the camera 16 functions as an input device for inputting the image information of the cracks recorded on the recording medium of the camera 16 into the arithmetic processing device 10. In this case, the arithmetic processing unit 10 has an interface for external input (not shown).
When the cracks generated in the wall cloth are measured by the crack scale, the crack information (crack width or length dimensional information) can be input to the arithmetic processing apparatus 10 from the input unit 14. When inputting information from the input unit 14, a crack information input screen is displayed on the display unit 13, and the information is input on the input screen.

In the present embodiment, the camera 16 is externally connected to the arithmetic processing device 10, but the present invention is not limited to this, and the camera 16 may be built in the arithmetic processing device 10. When the arithmetic processing unit 10 is, for example, a mobile phone such as a smartphone or a laptop personal computer, the camera 16 is often built in. If the arithmetic processing device 10 has a built-in camera 16, it can be used alone to acquire dimensional information on the width and length of cracks, estimate the maximum empirical interlayer deformation angle, determine the degree of damage, and determine the seismic performance residual rate. Since it can be done, it is very convenient.

The control unit 11 functions as the measurement result information acquisition means 11a, acquires information related to cracks (measurement result information) from the camera 16 or the input unit 14, and stores the information in the storage unit 12. In addition, from the image information input from the camera 16, for example, a photogrammetry technique for obtaining dimensions and shapes by analyzing disparity information from a two-dimensional image obtained by photographing a three-dimensional object from a plurality of observation points. Dimensional information on the width or length of a crack can be obtained by executing a measurement program that uses it, a measurement program that uses AR (Augmented Reality), or the like.

In addition to the dimensional information of the width or length of the crack, the information acquired by the measurement result information acquisition means 11a includes the dimensional information of the width or the length of the crack when estimating the maximum empirical interlayer deformation angle. , Information on which to use (width or length selection information) is included. In addition, position information with respect to the measured crack opening is also included.
In addition, information that identifies the building where the measurement was performed (address, owner information, etc.), structural information of the building (total number of floors, type of construction method, etc.), information that identifies the measurement location (measured floor, measurement, etc.) The position / direction of the wall in the building, the shape / dimensions of the measured wall) may be included.

Further, the control unit 11 functions as the experience maximum interlayer deformation angle estimation means 11b, and estimates the experience maximum interlayer deformation angle from the dimensional information of the width or length of the crack acquired by the measurement result information acquisition means 11a. At that time, the estimation formula data 12a stored in the storage unit 12 is used.
The contents of the estimation formula data 12a are the above formulas (1) to (4), and the above-mentioned width or length selection information included in the information acquired by the measurement result information acquisition means 11a and the position with respect to the opening. Equations (1) to (4) are automatically selected based on the information.
That is, in the case of the crack width generated in the upper corner of the opening, the formula (1) is selected, and the measured crack width dimension information is applied to "Bu" in the formula (1). ..
In the case of the crack width generated in the lower corner of the opening, the formula (2) is selected, and the measured crack width dimensional information is applied to "Bd" in the formula (2).
Equation (3) is selected when it is the crack length generated in the upper corner of the opening, and the measured crack length dimensional information is applied to "Lu" in the equation (3).
Equation (4) is selected when it is the crack length generated at the lower corner of the opening, and the measured crack length dimensional information is applied to “Ld” in equation (4).
The dimensional information of the width or length of the crack shall be input in millimeters (mm).

Further, the control unit 11 functions as the damage degree determining means 11c, and determines the damage degree from the experience maximum interlayer deformation angle estimated by the experience maximum interlayer deformation angle estimating means 11b. At that time, the damage degree determination data 12b stored in the storage unit 12 is used.
The contents of the damage degree determination data 12b are shown in FIG. 4, and are classified into "minor", "small damage", "medium damage", "major damage", and "collapse" according to the value of the maximum experience interlayer deformation angle. It is divided.
That is, when the value of the experience maximum interlayer deformation angle is 1/120 rad or less, it is determined that the damage degree is “minor”.
When the value of the experience maximum interlayer deformation angle is 1/60 rad or less, it is determined that the damage degree is "small damage".
When the value of the experience maximum interlayer deformation angle is 1/45 rad or less, it is determined that the damage degree is "medium damage".
When the value of the experience maximum interlayer deformation angle is 1/20 rad or less, it is judged that the damage degree is "wreck".
If the value of the experience maximum interlayer deformation angle exceeds 1/20 rad, it is judged that the damage degree is "collapse".
Each of these categories further correlates with the seismic intensity class and is used to determine the necessity of restoration in the basic structure and superstructure of the building.

Further, the control unit 11 functions as the seismic performance residual rate determining means 11d, and the seismic performance residual rate R (post-disaster seismic performance, before the disaster, from the experience maximum interlayer deformation angle estimated by the experienced maximum interlayer deformation angle estimation means 11b). Determine the ratio to seismic performance). At that time, the seismic performance residual rate determination data 12c stored in the storage unit 12 is used.
The contents of the seismic performance residual rate determination data 12c are shown in FIG. 13, and are divided into 6 stages according to the value of the empirical maximum interlayer deformation angle.
That is, when the value of the empirical maximum interlayer deformation angle is less than 1/120 rad, it is determined that the seismic performance residual rate R is "80%".
When the value of the empirical maximum interlayer deformation angle is 1/120 rad or more and less than 1/60 rad, it is determined that the seismic performance residual rate R is "60%".
When the value of the empirical maximum interlayer deformation angle is 1/60 rad or more and less than 1/45 rad, it is determined that the seismic performance residual rate R is "50%".
When the value of the empirical maximum interlayer deformation angle is 1/45 rad or more and less than 1/30 rad, it is determined that the seismic performance residual rate R is "35%".
When the value of the empirical maximum interlayer deformation angle is 1/30 rad or more and less than 1/20 rad, it is determined that the seismic performance residual rate R is "15%".
When the value of the experience maximum interlayer deformation angle is 1/20 rad or more, it is determined that the seismic performance residual rate R is "5%".
Such seismic performance survival rate R is important for appropriate repair and reinforcement of damaged buildings, and is also required for satisfying seismic performance targets for buildings to be reinforced. Further, the required seismic performance residual rate R is not an absolute value, but a relative value when 100% is set before the disaster.

As the arithmetic processing unit 10 in the present embodiment configured as described above, a laptop personal computer (so-called notebook computer) owned by each investigator who goes to the site to investigate the building after the earthquake is assumed. There is. However, the present invention is not limited to this, and a mobile phone such as a smartphone may be used, or another computer may be used.
When a mobile phone such as a smartphone is used as the arithmetic processing device 10, the investigator may conduct an on-site investigation and immediately estimate the maximum experienced interlayer deformation angle, determine the degree of damage, and determine the seismic performance residual rate. It is very convenient because it can be done.

Further, the arithmetic processing device 10 is not owned by each investigator, but may be, for example, a server managed by an administrative agency, a housing maker, an investigative company, or the like. In this case, the investigator only needs to have at least a communication terminal capable of transmitting various information such as dimensional information of the crack width and the length to the arithmetic processing device 10 which is a server.
More specifically, an investigator will come to the site with a mobile phone such as a smartphone with a built-in camera 16, take a picture of the crack at the site, and transfer the data to the arithmetic processing device 10 which is a server. send. Then, the estimation result of the maximum experience interlayer deformation angle derived from the server, the judgment result of the damage degree and the seismic performance residual rate are received by the mobile phone such as a smartphone. Even in such a form, it is possible to estimate the maximum empirical interlayer deformation angle.
When the arithmetic processing device 10 is used as a server, it is preferable to store the received information in a database. For example, by associating various information with the information sent from the site and storing it, it is possible not only to estimate the maximum empirical interlayer deformation angle but also to analyze the earthquake itself that has occurred.

FIG. 14 shows a flowchart illustrating a method of estimating the maximum experience interlayer deformation angle, a method of determining the degree of damage, and a method of determining the seismic performance residual rate.
First, the investigator visually finds the walls 2 and 3 in which the wall cloth has cracks f1 to f6 in the building 1 damaged by the earthquake, and selects the largest crack among them (step S1). In this embodiment, it is assumed that the crack f1 on the wall 2 is selected.

Subsequently, the investigator measures the width or length of the crack f1 (step S2). The dimensional measurement work may be performed using a crack scale or a camera 16.
After measuring the crack f1, the investigator inputs the measurement result information to the arithmetic processing unit 10 (step S3). The measurement result information may be input from the input unit 14, or may be performed by connecting the camera 16 to the arithmetic processing device 10 or transmitting data.

The arithmetic processing device 10 acquires measurement result information including dimensional information of the width or length of the crack f1 by the measurement result information acquisition unit 11a (step S4).
Then, the arithmetic processing apparatus 10 estimates the maximum empirical interlayer deformation angle from the dimensional information of the width or length of the crack acquired by the measurement result information acquisition means 11a by the empirical maximum interlayer deformation angle estimation means 11b (step S5).

Further, the arithmetic processing device 10 determines the degree of damage from the maximum empirical interlayer deformation angle estimated by the experience maximum interlayer deformation angle estimation means 11b by the damage degree determining means 11c (step S6).
Further, the arithmetic processing apparatus 10 determines the seismic performance residual rate R from the experience maximum interlayer deformation angle estimated by the experience maximum interlayer deformation angle estimation means 11b by the seismic performance residual rate determining means 11d (step S7).
The order of the steps S6 and S7 may be reversed.

Subsequently, the arithmetic processing device 10 outputs the estimation result by the experience maximum interlayer deformation angle estimation means 11b and the determination result by the damage degree determination means 11c and the seismic performance residual rate determination means 11d (step S8). The output destination may be the display unit 13 of the arithmetic processing unit 10, or may be transmitted to a computer (for example, a smartphone, a tablet computer, etc.) possessed by the investigator.

After that, the investigator acquires the estimation result by the experience maximum interlayer deformation angle estimation means 11b and the judgment result by the damage degree determination means 11c and the seismic performance residual rate determination means 11d by the computer owned by the investigator (step S9).
As described above, it is possible to estimate the maximum experienced interlayer deformation angle of the building 1 damaged by the earthquake, determine the degree of damage, and determine the seismic performance residual rate R.

According to the present embodiment, the maximum empirical interlayer deformation angle and the cracks generated in the wall cloth are quantified based on the experimental results performed in advance, and the corner portions of the openings 2a and 3a formed in the walls 2 and 3 are formed. From the actual width or length of the cracks f1 to f6 of the wall cloth that occurred in the above, the maximum empirical interlayer deformation angle is estimated easily and accurately by the estimation formulas (1) to (4) based on the experimental results performed in advance. It becomes possible and there is no individual difference in the estimation result.

After a major earthquake, in order to ensure the safety of residents and local residents, it is necessary to quickly determine the degree of damage to the building 1 and the seismic performance residual rate. Since it is predicted that there will be an overwhelming shortage of survey personnel in the Nankai Trough giant earthquake and the earthquake directly beneath the Tokyo metropolitan area, which are expected to occur in the future, it is strongly required to estimate the maximum experienced interlayer deformation angle easily and accurately. ing.
Therefore, even in the Nankai Trough giant earthquake and the earthquake directly under the Tokyo metropolitan area, which are expected to occur in the future, it is unlikely that there will be a shortage of survey personnel, and it will be easier to take prompt action.

Further, when estimating the empirical maximum interlayer deformation angle, it is estimated based on the above estimation formulas (1) to (4). As a result, the empirical maximum interlayer deformation angle can be estimated from the width or length of the cracks f1 to f6 according to the positions of the cracks f1 to f6 with respect to the openings 2a and 3a. It is possible to improve the accuracy in performing the above.

Further, since the damage degree of the building 1 is determined based on the estimated maximum empirical interlayer deformation angle, the damage degree can be notified to the resident of the building 1.

Further, since the seismic performance residual rate R of the building 1 is determined based on the estimated maximum empirical interlayer deformation angle, the seismic performance residual rate R can be notified to the residents of the building 1.

Further, since the arithmetic processing apparatus 10 can acquire the measurement result information relating to the width or length of the cracks f1 to f6 measured in advance and estimate the maximum empirical interlayer deformation angle based on the measurement result information, the cracks can be estimated. As long as the width and length are measured in advance, the arithmetic processing apparatus 10 can easily estimate the maximum empirical interlayer deformation angle.

Further, since the arithmetic processing device 10 can use the images of the cracks f1 to f6 taken by the camera 16 as the measurement result information, the crack width and the length can be easily measured. Therefore, it is possible to improve the convenience in estimating the maximum empirical interlayer deformation angle.

In addition, the maximum empirical interlayer deformation angle and the cracks f1 to f6 generated in the wall cloth were quantified based on the experimental results performed in advance, and were generated in the corners of the openings 2a and 3a formed in the walls 2 and 3. From the actual width or length of the cracks f1 to f6 of the wall cloth, it is possible to easily and accurately estimate the maximum empirical interlayer deformation angle by an estimation formula based on the experimental results performed in advance, and the estimation results vary from person to person. Does not occur.

1 Building 1a 1st floor 1b 2nd floor 2 Wall 2a Opening 3 Wall 3a Opening 10 Arithmetic processing device 11 Control unit 11a Measurement result information acquisition means 11b Experience maximum interlayer deformation angle estimation means 11c Damage degree determination means 11d Seismic performance residual rate determination means 12 Storage unit 12a Estimated formula data 12b Damage degree determination data 12c Seismic performance residual rate determination data 13 Display unit 14 Input unit 15 Communication unit 16 Cameras f1 to f6 Cracks

Claims (7)

A crack in a wall cloth formed in a corner of an opening formed in the wall of a building in which a gypsum board is provided on at least one surface and a wall cloth is attached to the surface of the gypsum board. It is a method of estimating the maximum empirical interlayer deformation angle from
Measure the width or length of the crack and
A method for estimating the maximum empirical interlayer deformation angle, which comprises estimating the empirical maximum interlayer deformation angle from the crack measurement result by an estimation formula based on an experimental result performed in advance. In the method for estimating the maximum empirical interlayer deformation angle according to claim 1,
The estimation formula is
γe = (Bu + 0.26) / 110 ... Equation (1)
γe = (Bd + 0.66) / 180 ... Equation (2)
γe = (Lu + 43.6) / 25200 ... Equation (3)
γe = (Ld + 163.5) / 55100 ... Equation (4)
Is one of
γe: Experience maximum interlayer deformation angle (rad), Bu: Crack width (mm) generated in the upper corner portion of the opening, Bd: Crack width (mm) generated in the lower corner portion of the opening. , Lu: Crack length (mm) generated in the upper corner portion of the opening, Ld: Crack length (mm) generated in the lower corner portion of the opening. How to estimate the maximum interlayer deformation angle. In the method for estimating the maximum empirical interlayer deformation angle according to claim 1 or 2.
A method for estimating the maximum empirical interlayer deformation angle, which comprises determining the degree of damage to the building based on the estimated maximum empirical interlayer deformation angle. In the method for estimating the maximum empirical interlayer deformation angle according to any one of claims 1 to 3,
A method for estimating the maximum empirical interlayer deformation angle, which comprises determining the seismic performance residual rate of the building based on the estimated maximum empirical interlayer deformation angle. In the method for estimating the maximum empirical interlayer deformation angle according to any one of claims 1 to 4.
The estimation of the empirical maximum interlayer deformation angle is performed by an arithmetic processing unit.
The arithmetic processing apparatus is a method for estimating an empirical maximum interlayer deformation angle, which comprises acquiring measurement result information relating to the width or length of the crack measured in advance. In the method for estimating the maximum empirical interlayer deformation angle according to claim 5.
An empirical maximum interlayer deformation angle estimation method, characterized in that the crack is photographed by a camera, and the arithmetic processing apparatus acquires an image of the crack photographed by the camera as the measurement result information. A computer with a storage device that stores an estimation formula based on the results of experiments performed in advance.
A crack in a wall cloth formed in a corner of an opening formed in the wall of a building in which a gypsum board is provided on at least one surface and a wall cloth is attached to the surface of the gypsum board. Measurement result information acquisition means for acquiring measurement result information related to the width or length of
A program that executes the estimation formula and functions as an estimation means for estimating the empirical maximum interlayer deformation angle from the measurement result of the crack acquired by the measurement result information acquisition means.

Images