JP2019164007A - Building soundness evaluation system, building soundness evaluation method, and program - Google Patents

Abstract

To provide a building soundness evaluation system, building soundness evaluation method, and program for estimating the damage degree of a building having repeatedly undergone a disturbance, in a building soundness evaluation.SOLUTION: A building soundness verification system includes: an energy amount derivation unit for deriving an energy amount applied to a building on the basis of the relationship between a layer shear force and an interlayer displacement based on a measurement result of the vibration of the building; a cumulative value derivation unit for deriving the cumulative value of the energy amount applied to the building on the basis of the energy amount applied to the building; and a cumulative damage degree derivation unit for deriving the cumulative damage degree of the building on the basis of the cumulative value of the energy amount applied at least to the building.SELECTED DRAWING: Figure 1

Description

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

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

  By the way, when a building is repeatedly subjected to disturbance due to multiple earthquakes or long-period ground motions, it is generally necessary to evaluate the soundness of the building by structural analysis simulation. It was difficult.

JP 2014-134436 A

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

  One aspect of the present invention for solving the above-described problem is an energy amount deriving unit that derives the amount of energy received by the building due to a disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building. A cumulative value deriving unit for deriving a cumulative value of the amount of energy received by the building from the amount of energy received by the building, and deriving a cumulative damage degree of the building from at least a cumulative value of the amount of energy received by the building A building soundness evaluation system including a cumulative damage degree deriving unit.

  In addition, the cumulative value deriving unit in the building soundness evaluation system derives the cumulative value of the energy amount absorbed by the structural framework of the building as the cumulative value of the energy amount received by the building.

  The cumulative value deriving unit in the building soundness evaluation system derives a cumulative value of the energy amount absorbed by the structural framework of the building from a cumulative value of the energy amount received by the building according to a predetermined rule.

  The cumulative damage degree deriving unit in the building soundness evaluation system includes a cumulative deformation amount deriving unit that derives a cumulative deformation amount of the building from a cumulative value of an energy amount absorbed by the structural framework of the building, and the building A maximum deformation amount deriving unit for deriving the maximum deformation amount of the building from the measurement result of the vibration of the building, the cumulative damage degree deriving unit is based on the cumulative deformation amount and the maximum deformation amount of the building Derived cumulative damage.

  The building health level evaluation system further includes a health level evaluation unit that evaluates the health level of the building based on at least the cumulative damage level of the building.

  Moreover, the said soundness evaluation part in said building soundness evaluation system produces | generates the information which shows the result of the evaluation of the soundness of the said building based on the cumulative damage degree of the said building at least.

  In the building health evaluation system described above, when the device that absorbs energy acting on the structural frame of the building other than the structural frame of the building is provided in the building, the cumulative value deriving unit The amount of energy received by the building structural framework is divided into the amount of energy absorbed by the structural framework of the building and the amount of energy absorbed by the device at a predetermined ratio, and at least the amount of energy absorbed by the structural framework of the building is derived.

  Further, the building health evaluation method according to one aspect of the present invention derives the amount of energy received by the building due to disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building. The method includes a step of deriving a cumulative value of the energy amount received by the building from the received energy amount, and deriving a cumulative damage degree of the building from at least a cumulative value of the energy amount received by the building.

  The program of one embodiment of the present invention includes a step of deriving an amount of energy received by the building due to a disturbance from a relationship between a layer shear force and an interlayer displacement based on a measurement result of the vibration of the building, and the building received A program for causing a computer to execute a step of deriving a cumulative value of an energy amount received by the building from an energy amount and a step of deriving a cumulative damage degree of the building from at least a cumulative value of the energy amount received by the building It is.

  ADVANTAGE OF THE INVENTION According to this invention, in the soundness evaluation of a building, the damage degree of the building which received the disturbance repeatedly can be estimated.

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

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

  The “building” referred to in the present application is not limited to a building or a house, but may be a bridge or other structure. In addition, the “building layer” referred to in the present application means a part of a building that can be handled as a unit when considering the deformation properties of the building. “Building layer” means, for example, each floor of a building (a portion composed of floors, beams, columns, walls, and the like of each floor). Further, the “amount of energy received by the building” in the present application is the amount of energy received by the entire building due to a disturbance, and includes the amount of energy absorbed by other than the structural framework of the building. “Energy received by the building” is derived based on the measurement results of vibrations in the building as the amount of energy received by the entire building due to disturbance, and is an estimate of the amount of energy actually received by the building. It is a value. The “cumulative value of the amount of energy received by the building” is derived as an integrated value of the above “amount of energy received by the building”.

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

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

  In the present embodiment, the plurality of acceleration sensors S includes acceleration sensors Sb, Sm, and Sr. The acceleration sensor Sb is provided in the lowermost layer Fb (or the layer F near the lowermost layer Fb) of the building 100 including the foundation portion of the building 100, and measures the acceleration in the lowermost layer Fb (or the lowermost layer Fb vicinity) of the building 100. . The acceleration sensor Sm is provided in an arbitrary intermediate layer Fm (a layer other than the lowermost layer Fb and the uppermost layer Fr) of the building 100 and measures acceleration in the intermediate layer Fm of the building 100. The acceleration sensor Sr is provided in the uppermost layer Fr of the building 100 (or the layer F in the vicinity of the uppermost layer Fr), and measures the acceleration in the uppermost layer Fr of the building 100 (or in the vicinity of the uppermost layer Fr). The top layer Fr of the building 100 is, for example, the roof of the building 100. Hereinafter, the “lowermost layer Fb” and the “layer F near the lowermost layer Fb” of the building 100 are collectively referred to as “lowermost layer Fb”. Further, the “top layer Fr” and the “layer F near the top layer Fr” of the building 100 are collectively referred to as “top layer Fr”.

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

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

Next, the evaluation processing unit 20 and the database 30 will be described.
As illustrated in FIG. 1, the evaluation processing unit 20 includes, for example, a deformation degree deriving unit 23, a cumulative damage degree deriving unit 26, a soundness degree evaluating unit 27, and an information notification control unit 28. Note that some or all of the deformation degree deriving unit 23, the cumulative damage degree deriving unit 26, the soundness degree evaluating unit 27, and the information notification control unit 28 are executed by a program such as a CPU executed by a processor. It may be a software function unit to be realized, or may be hardware such as LSI (Large Scale Integration) or ASIC (Application Specific Integrated Circuit) having similar functions, or realized by a software function unit and hardware. May be. In addition, the said program is stored in the storage device contained in the building soundness evaluation system 1, for example. Further, the database 30 may be realized by the storage device, or may be realized by an external device accessible through an information communication network using the Internet.

Next, the deformation degree deriving unit 23 will be described.
The deformation degree deriving unit 23 derives the deformation degree of the building 100 based on, for example, data (absolute acceleration) measured by the acceleration measurement unit 11. The “deformation degree” referred to in the present application is, for example, an interlayer displacement or an interlayer deformation angle of the building 100, but is not limited thereto, and may be an inclination angle of a column or a wall with respect to the foundation of the building 100. Further, the “degree of deformation” in the present application means the degree of deformation of the building 100 including elastic deformation.

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

  In the present embodiment, the deformation degree deriving unit 23 divides the interlayer displacement derived between the two layers F by the distance in the vertical direction (Z-axis direction (FIG. 1)) between the two layers F. Thus, an interlayer deformation angle between the two layers F is derived. Note that information indicating “distance between two layers F” used for the calculation is stored in the database 30 in advance, for example. For example, in the present embodiment, the deformation degree deriving unit 23 derives an interlayer deformation angle between all the layers F in which the acceleration sensor S is provided. Then, the deformation degree deriving unit 23 outputs the evaluation index indicating the deformation degree of the building 100 to the soundness degree evaluation unit 27.

Next, the soundness level evaluation unit 27 will be described.
The soundness level evaluation unit 27 includes a seismic soundness level evaluation unit 271, a cumulative damage level evaluation unit 272, and an overall soundness level evaluation unit 273. The cumulative damage level evaluation unit 272 and the overall soundness level evaluation unit 273 will be described together with the cumulative damage level calculation unit 26 described later.

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

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

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

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

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

Next, the cumulative damage degree deriving unit 26 will be described.
The cumulative damage degree deriving unit 26 derives the cumulative damage degree of the building 100 based on the data (absolute acceleration) measured by the acceleration measuring unit 11 from the cumulative value of at least the energy amount received by the building 100 due to an earthquake or the like. The “accumulated damage degree” means the degree of damage accumulated in the building 100 when the building 100 is repeatedly subjected to disturbance due to multiple earthquakes, long-period ground motion, or the like.

  The cumulative damage degree deriving unit 26 of the embodiment includes, for example, a laminar shear force deriving unit 261, a Q-δ curve generating unit 262, an energy amount deriving unit 263, a cumulative value deriving unit 264, a structural framework absorbed energy amount deriving unit 265, and a maximum. A deformation amount deriving unit 266 and a cumulative deformation amount deriving unit 267 are provided. The layer shear force deriving unit 261, the Q-δ curve generating unit 262, the energy amount deriving unit 263, the cumulative value deriving unit 264, the structural framework absorbed energy amount deriving unit 265, the maximum deformation amount deriving unit 266, and the cumulative deformation amount deriving unit. 267 may be a part of the cumulative damage degree deriving unit 26, or a part or all of them may be independent of each other.

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

Qk = Mk · Ak (1)

  Note that the layer shear force Qk may be defined as an arithmetic expression as in the above equation (1). Instead of this, the layer shear force Qk is defined in advance as a table indicating the layer shear force Q with respect to the acceleration A of each layer. Also good.

  The Q-δ curve generation unit 262 indicates the relationship between the layer shear force Q and the degree of deformation δ with a locus on a two-dimensional plane. For example, the relationship between the layer shear force Q and the degree of deformation δ is shown in FIG.

  Based on the measurement result of the vibration of the building 100, the energy amount deriving unit 263 derives the energy amount ΔW2 received by the building 100 due to the disturbance. For example, the energy amount deriving unit 263 derives the energy amount ΔW2 from the area of the region closed by the curve generated by the Q-δ curve generating unit 262.

  FIG. 3 is a diagram schematically illustrating an energy amount derivation method according to the embodiment. In this graph, the horizontal axis indicates the interlayer displacement (δ), and the vertical axis indicates the layer shear force (Q). For example, the area surrounded by the hatched history curve in FIG. 3 is the energy amount ΔW2.

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

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

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

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

  The maximum deformation amount deriving unit 266 derives the maximum deformation amount (maximum value of the degree of deformation) of the building 100 that has received at least disturbance. The maximum deformation amount is, for example, a plasticity rate. Note that the maximum deformation amount deriving unit 266 may not be used.

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

  For example, the cumulative damage level deriving unit 26 derives the cumulative damage level based on the cumulative deformation amount derived by the cumulative deformation amount deriving unit 267 and the maximum deformation amount derived by the maximum deformation amount deriving unit 266. When the value of the cumulative damage level is less than 1, it may be evaluated that the building soundness level is not affected by the cumulative damage level. Note that a technique different from the above may be applied to the derivation of the cumulative damage degree by the cumulative damage degree derivation unit 26.

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

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

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

  As shown in FIG. 4, when the acceleration sensors S are provided for the plurality of layers F of the building 100, the area between the two acceleration sensors S adjacent to each other is displayed as one block B. The soundness level for block B is displayed. The display screen of the information notification unit 40 displays, for example, the measurement seismic intensity, the interlayer deformation angle, the result of the soundness evaluation, and the like as standard output. Further, on the display screen of the information notification unit 40, the response spectrum, the natural period of the building 100, the inclination angle of the building 100, the amount of energy absorbed or accumulated by the building 100, the equivalent attenuation constant, and the like are displayed as detailed outputs. May be. The inclination angle of the building 100 indicates, for example, the inclination angle of the wall of the building 100 or the inclination of the building 100 itself, and may be the inclination of the foundation of the building 100 or the floor of each layer. Moreover, the information notification control part 28 may output the same content as these as a report file.

Next, an example of the processing flow of the building soundness evaluation method of this embodiment is shown.
FIG. 5 is a flowchart illustrating an example of a processing procedure of the building health level evaluation method performed by the building health level evaluation system 1. In addition, the flowchart shown below has shown the example which evaluates building soundness comprehensively with the building soundness based on the building soundness for every earthquake, and the cumulative damage degree.

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

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

  The deformation degree deriving unit 23 of the evaluation processing unit 20 derives the absolute displacement of the layer F provided with each acceleration sensor S based on the measurement data measured by each acceleration sensor S (S131). And the deformation | transformation degree deriving part 23 derives | leads-out the interlayer displacement between these two layers F based on the difference of the displacement amount of the two layers F from which the absolute displacement was derived | led-out, for example (S132). Next, the deformation degree deriving unit 23 derives the interlayer deformation angle between the two layers F by dividing the interlayer displacement between the two layers F by the distance between the two layers F (S133). ). Then, the deformation degree deriving unit 23 outputs the derived interlayer deformation angle to the seismic soundness evaluation unit 271.

  Next, the seismic soundness evaluation unit 271 evaluates the soundness of the building 100 for each earthquake based on the interlayer deformation angle derived by the deformation degree deriving unit 23 (S150). By evaluating the soundness of the building 100 for each earthquake, the degree of damage caused by each earthquake can be evaluated.

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

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

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

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

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

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

  Note that the processing of S161 and S162 described above may be shared with the processing of S131 and S132.

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

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

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

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

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

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

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

  With reference to FIG. 7 and FIG. 8, the evaluation method of the cumulative damage degree by the cumulative damage degree evaluation part 272 is demonstrated. FIG. 7 is a diagram for explaining the cumulative damage degree evaluation method according to the embodiment.

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

  For example, the soundness evaluation unit 27 determines two reference values (threshold values) having different sizes, that the degree of deformation of the building 100 reaches the plasticized area and that the degree of deformation of the building 100 reaches the dangerous area. It uses for a reference | standard and it identifies based on the deformation degree of the building 100. FIG.

  The soundness evaluation unit 271 of each earthquake of the soundness evaluation unit 27 evaluates the state of the building 100 as “safe” for such an earthquake as a target of the soundness evaluation of the building 100 by a single earthquake. . On the other hand, the cumulative damage level evaluation unit 272 of the soundness level evaluation unit 27 evaluates that the state to be evaluated for the cumulative damage level does not occur due to the small deformation level.

  The overall soundness evaluation unit 273 of the soundness evaluation unit 27 includes a result of evaluation of “safety” by the soundness evaluation unit 271 for each earthquake and a result of “accumulation of damage assessment by the cumulative damage degree evaluation unit 272. Comprehensive evaluation based on the result of the evaluation “No”. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that the building 100 is in a healthy state and it is “safe” to use the building 100 continuously.

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

  For each earthquake, the soundness evaluation unit 271 of the soundness evaluation unit 27 is subject to the soundness evaluation of the building 100 by a single earthquake, and the state of the building 100 is in a state requiring “caution”. Evaluate that there is. On the other hand, the cumulative damage level evaluation unit 272 of the soundness level evaluation unit 27 evaluates that the earthquake is the target of the evaluation of the cumulative damage level by observing the shaking reaching the plasticized region of the building 100. However, since the number of times that the vibration reaching the plasticized region of the building 100 is observed during an earthquake is relatively small and the frequency is relatively low, the cumulative damage evaluation unit 272 may cause cumulative damage. Is evaluated as small. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 of the soundness evaluation unit 27 calculates the result of the evaluation “caution” by the seismic soundness evaluation unit 271 and the cumulative damage degree evaluation unit 272 to “accumulate cumulative damage”. Comprehensive evaluation based on the result of the evaluation that “the possibility of reaching is small”. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that there is a possibility that the building 100 is damaged, and that “caution” is required to continue using the building 100.

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

  For each earthquake, the soundness evaluation unit 271 of the soundness evaluation unit 27 is subject to the soundness evaluation of the building 100 by a single earthquake, and the state of the building 100 is in a state requiring “caution”. Evaluate that there is. In the above case, the energy of the earthquake is relatively large, but the state of the building 100 is evaluated as a state requiring “caution” as in the case of FIG. That is, although the energy which an earthquake has is comparatively big, only the evaluation by the seismic health evaluation part 271 does not produce a difference in the result.

  On the other hand, the cumulative damage level evaluation unit 272 of the soundness level evaluation unit 27 evaluates that the earthquake is the target of the evaluation of the cumulative damage level by observing the shake reaching the plasticized region of the building 100. . However, since the number of times that the vibration reaching the plasticized region of the building 100 is observed during an earthquake is relatively high and the frequency is relatively high, the cumulative damage evaluation unit 272 may cause cumulative damage. Assess that is large. As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 of the soundness evaluation unit 27 calculates the result of the evaluation “caution” by the seismic soundness evaluation unit 271 and the cumulative damage degree evaluation unit 272 to “accumulate cumulative damage”. Comprehensive evaluation based on the result of the evaluation that " As a result of the comprehensive evaluation, the comprehensive soundness evaluation unit 273 evaluates that there is a possibility that the building 100 is damaged and it is “dangerous” to continue using the building 100.

  FIG. 8 is a diagram illustrating an example of an evaluation table used for soundness evaluation in the overall soundness evaluation unit of the embodiment. In the evaluation table shown in FIG. 8, the cumulative damage level, the deformation level of the building 100, and a plurality of levels related to the soundness of the building 100 are associated in advance. By referring to the evaluation table, the earthquake-by-earthquake soundness evaluation unit 271 sets the soundness of the building 100 among a plurality of levels set in advance based on the level of cumulative damage and the level of deformation of the building 100. Derived uniquely from The plurality of levels related to the soundness level of the building 100 are, for example, “safety”, “caution”, “danger”, and the like.

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

  The cumulative damage degree evaluation unit 272 finishes the series of processes shown in the drawing by performing the above processes.

  According to the embodiment configured as described above, the building soundness evaluation system 1 determines the amount of energy received by the building 100 due to the disturbance from the relationship between the layer shear force and the interlayer displacement based on the vibration measurement result of the building 100. Is derived. The building soundness evaluation system 1 derives a cumulative value of the amount of energy absorbed by the building 100 from the amount of energy received by the building 100. The building health level evaluation system 1 derives the cumulative damage degree of the building 100 from at least the cumulative value of the amount of energy received by the building 100. Thereby, since the building soundness evaluation system 1 can derive the cumulative damage degree of the building 100 based on at least the cumulative value of the amount of energy received by the building 100, repeated vibrations (disturbances) in the soundness evaluation of the building ) Can be used to derive the degree of building damage.

  The building soundness evaluation system 1 derives a cumulative value of energy absorbed by the structural framework of the building 100 as a cumulative value of energy received by the building 100, thereby evaluating the degree of deformation for each earthquake. In contrast, the degree of damage accumulated in the building 100 can be derived.

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

  In addition, even if it is a case where the above damping devices are provided in the building 100 by providing the predetermined rule as described above, the building soundness evaluation system 1 is in a characteristic of the damping device. It is possible to divide the amount of energy by a predetermined ratio based on it, and to accumulate the amount of energy that is at least related to damage to the building 100. The above vibration damping device is an example of a device that absorbs energy acting on the structural frame of the building 100 other than the structural frame of the building 100.

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

  The building soundness evaluation system 1 derives the maximum deformation amount of the building 100 subjected to the disturbance based on the measurement result of the vibration of the building 100, and the layer shear force based on the measurement result of the vibration of the building 100. The amount of energy of the building 100 subjected to the disturbance is derived from the relationship between the displacement and the interlayer displacement, and the cumulative deformation amount of the building 100 is derived from the cumulative value of the energy amount absorbed by the building 100. Then, based on the cumulative deformation amount and the maximum deformation amount of the building 100, the soundness evaluation of the building 100 is made possible.

(Modification of the first embodiment)
In this modification, an example in which processing different from that of the above-described embodiment is applied to processing of building soundness evaluation due to a single earthquake will be described.

  For example, the seismic soundness evaluation unit 271 is based on a measurement result of at least one of a degree of deformation in each layer of the building 100, a natural period of the building 100, and an inclination angle of the building 100, or a plurality of combination results. The soundness of the building 100 for each earthquake is evaluated. JP, 2014-134436, A, etc. may be referred to for the detailed method of soundness evaluation of building 100 for every earthquake.

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

  According to the above-described modification, a known technique can be applied to the assessment of the building damage level due to a single earthquake and combined with the evaluation of the cumulative damage level.

(Second Embodiment)
A second embodiment will be described. In the first embodiment, the example in which the cumulative damage degree is derived through the maximum deformation amount and the cumulative deformation amount has been described. In the present embodiment, a description will be given of deriving the cumulative damage degree from the cumulative value of energy.

FIG. 9 is a diagram illustrating a configuration example of the building soundness evaluation system 1A according to the embodiment.
As illustrated in FIG. 9, the building soundness evaluation system 1 </ b> A according to the embodiment includes, for example, a sensor group 10, an evaluation processing unit 20 </ b> A, a database (DB) 30, and an information notification unit 40.

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

  The cumulative damage degree deriving unit 26A of the embodiment includes a laminar shear force deriving unit 261, a Q-δ curve generating unit 262, an energy amount deriving unit 263, a cumulative value deriving unit 264, and a structural framework absorbed energy amount deriving unit 265. The cumulative damage degree deriving unit 26 includes the maximum deformation amount deriving unit 266 and the cumulative deformation amount deriving unit 267, but the cumulative damage degree deriving unit 26A is different in that it is not provided.

  The soundness level evaluation unit 27A includes a seismic soundness level evaluation unit 271, a cumulative damage level evaluation unit 272A, and an overall soundness level evaluation unit 273.

  Next, with reference to FIG. 10, the process which evaluates the soundness based on the cumulative damage degree of a building is demonstrated. FIG. 10 is a flowchart illustrating a procedure of processing for evaluating the soundness level based on the cumulative damage level of the building according to the embodiment. From the procedure of the process for evaluating the soundness based on the cumulative damage degree of the building shown in FIG. 6 described above, the processes of S162 and S168 are omitted, and the process of S169A is different.

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

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

  According to said embodiment, there exists an effect similar to 1st Embodiment by following the procedure which derives | leads-out a cumulative damage degree from the cumulative value of energy amount.

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

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

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

  As mentioned above, although the building soundness evaluation system 1 and the building soundness evaluation method which concern on embodiment were demonstrated, embodiment is not limited to the said example.

  DESCRIPTION OF SYMBOLS 1, 1A ... Building soundness evaluation system (structure soundness evaluation system), 11 ... Acceleration measurement part, 23 ... Deformation degree deriving part, 26, 26A ... Cumulative damage degree deriving part, 27, 27A ... Soundness degree evaluation part, 28 ... Information notification control unit, 100 ... Building, 261 ... Layer shear force deriving unit, 262 ... Q-δ curve generating unit, 263 ... Energy amount deriving unit, 264 ... Cumulative value deriving unit, 265 ... Deriving structural framework absorbed energy amount Part 266 ... maximum deformation amount deriving part 267 ... cumulative deformation amount deriving part, S ... acceleration sensor, F ... building layer.

Claims (9)

An energy amount deriving unit for deriving the amount of energy received by the building due to a disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building;
A cumulative value deriving unit for deriving a cumulative value of the amount of energy received by the building from the amount of energy received by the building;
A building health degree evaluation system comprising: a cumulative damage degree deriving unit that derives at least a cumulative damage degree of the building from a cumulative value of an energy amount received by the building. The cumulative value deriving unit
Deriving the cumulative amount of energy absorbed by the structural framework of the building as the cumulative amount of energy received by the building,
The building soundness evaluation system according to claim 1. The cumulative value deriving unit
Deriving the cumulative amount of energy absorbed by the building structural framework from the cumulative amount of energy received by the building according to a predetermined rule;
The building soundness evaluation system according to claim 2. The cumulative damage degree deriving unit
A cumulative deformation amount deriving unit for deriving a cumulative deformation amount of the building from a cumulative value of the energy amount received by the building;
A maximum deformation amount deriving unit for deriving the maximum deformation amount of the building from the measurement result of the vibration of the building,
The cumulative damage degree deriving unit
Deriving the cumulative damage degree of the building based on the cumulative deformation amount and the maximum deformation amount of the building,
The building soundness evaluation system according to claim 3. The building soundness evaluation system according to any one of claims 1 to 4, further comprising a soundness evaluation unit that evaluates the soundness of the building based on at least a cumulative damage degree of the building. The soundness evaluation unit
The building soundness evaluation system according to claim 5, wherein information indicating a result of evaluation of the soundness of the building based on at least a cumulative damage degree of the building is generated. When a device that absorbs energy acting on the structural frame of the building other than the structural frame of the building is provided in the building,
The cumulative value deriving unit
The amount of energy received by the building is divided into a predetermined ratio between the amount of energy absorbed by the structural framework of the building and the amount of energy absorbed by the device, and at least the amount of energy absorbed by the structural framework of the building is derived.
The building soundness evaluation system according to claim 3. Deriving the amount of energy received by the building due to disturbance from the relationship between the layer shear force and the interlayer displacement based on the building vibration measurement results,
Deriving the cumulative value of the amount of energy received by the building from the amount of energy received by the building,
A building health evaluation method including a process of deriving a cumulative damage degree of the building from at least a cumulative value of energy received by the building. Deriving the amount of energy received by the building due to the disturbance from the relationship between the layer shear force and the interlayer displacement based on the measurement result of the vibration of the building;
Deriving a cumulative value of the amount of energy received by the building from the amount of energy received by the building;
A program for causing a computer to execute at least a step of deriving a cumulative damage degree of the building from a cumulative value of an energy amount received by the building.

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