JP2023091792A - Structural soundness evaluation system for building - Google Patents

Abstract

To provide a system for accurate determination of the structural soundness of a building with a simple configuration.SOLUTION: A structural soundness evaluation system for a building includes: an analysis unit 21 which performs a static incremental analysis in advance using a three-dimensional frame model, calculates an analysis value of the energy absorption amount of each layer 11 and an analysis value of the energy absorption amount of each member including columns and beams at each incremental step which is a stage of increasing the load in the static incremental analysis, and records the analysis values in an analysis result recording unit 27; an earthquake information recording unit 22 which records earthquake information obtained from a sensor 12 installed in a building 10; and an energy absorption estimation unit 23 which calculates the layer shear force and interlayer displacement of each layer 11 based on the earthquake information and the weight of each layer 11 of the building 10, and calculates an estimated energy absorption amount of each layer 11 based on the layer shear force and interlayer displacement.SELECTED DRAWING: Figure 1

Description

The present invention relates to a soundness evaluation system for diagnosing and evaluating the soundness of a building.

2. Description of the Related Art Various building soundness evaluation systems have been proposed, which are capable of ascertaining the structural performance of a building, such as the degree of damage to the building, that is, the soundness of the building after the occurrence of an earthquake without directly looking at the building. In such a building soundness evaluation system, it is desired to grasp the soundness of the building with higher accuracy.
For example, in Patent Document 1, based on acceleration data obtained from a sensor provided in the observation layer of a multi-layered building and damage expansion information indicating the presence or absence of damage expansion in the observation layer, acceleration data in the observation layer and observation layer Estimate the presence or absence of damage expansion in the judgment layer using the building damage expansion detection model that has learned the relationship between the presence or absence of damage expansion in the judgment layer and the acceleration data acquired by the sensor installed in the judgment layer. A configuration technique is disclosed.
In the configuration disclosed in Patent Document 1, although it is possible to estimate the presence or absence of damage expansion in the observation layer of the building, it is possible to make a detailed soundness determination of each member constituting each layer of the building. not a thing Therefore, there is a limit to improving the accuracy of soundness determination.

On the other hand, in Patent Document 2, vibration sensors are installed at the joints of a plurality of structural members that form the structural frame of the structure, and the joints and the plurality of structural members that make up the joints are divided as partial structures. , Input the detection information of the vibration sensor installed on each structural member joined to the joint, use the vibration sensor of the joint as the output, and based on the input/output relationship of the dynamic characteristics of each partial structure, the structural members that make up the partial structure A configuration for detecting the presence or absence of damage and the degree of damage is disclosed.
In the configuration disclosed in Patent Document 2, detailed soundness determination can be performed for each structural member, but it is necessary to install a vibration sensor at each joint of the structural members. For this reason, it is necessary to install a large number of vibration sensors, which complicates the configuration and is not easy to implement.

In addition, Patent Document 3 discloses that a plurality of sensors are provided at a plurality of positions in a building, and the impact of an earthquake on the building from before to after the arrival of the main motion to the building is measured by the plurality of sensors. Based on this, measuring the impact of earthquakes on buildings at each location is disclosed. In this configuration, the amount of displacement and the inter-story deformation angle are calculated from the measurement results of a plurality of sensors, and the soundness of the building is evaluated for each floor of the building and for each structural element (member) of the building.
Even in the configuration disclosed in Patent Document 3, it is possible to perform a detailed soundness evaluation for each member, but for this purpose it is necessary to install a sensor for each member. Therefore, it is necessary to install a large number of sensors, which complicates the system configuration.

Japanese Unexamined Patent Application Publication No. 2020-8332 JP 2015-4526 A JP 2020-143895 A

The problem to be solved by the present invention is to provide a building soundness evaluation system that can accurately determine the soundness of a building with a simple configuration.

In order to solve the above problems, the present invention employs the following means.
That is, the building soundness evaluation system of the present invention is a soundness evaluation system for diagnosing and evaluating the soundness of a building. , perform a static incremental analysis in advance, and for each incremental step that is the stage of increasing the load in the analysis, the analytical value of the energy absorption amount of each layer and the energy absorption amount of each member including the column and the beam The analysis unit that calculates the analysis value of and records it in the analysis result recording unit, the earthquake information recording unit that records the earthquake information obtained from the sensor installed in the building, the earthquake information, and the weight of each layer of the building Based on this, an energy absorption amount estimating unit that calculates the layer shear force and the interlayer displacement of each layer and calculates an estimated value of the energy absorption amount of each layer based on the layer shear force and the interlayer displacement, and the analysis result recording unit From the recorded analytical values of the energy absorption amount of each layer, select the minimum difference analysis value of the energy absorption amount of each layer that minimizes the difference from the estimated value of the energy absorption amount of each layer. The energy absorption amount of each member is determined from the identification unit of the incremental step that identifies the corresponding incremental step as the incremental step with the minimum difference, and the analytical value of the energy absorption amount of each member corresponding to the incremental step with the minimum difference. Obtain an estimated value, compare the estimated value of the energy absorption amount of each member and the damage determination threshold set for each member, calculate the degree of damage, and calculate the degree of damage of each member based on the degree of damage , and a soundness determination unit that determines the soundness of the building.
According to such a configuration, a static incremental analysis is performed using a three-dimensional frame model configured to correspond to a building including columns and beams, and the step of increasing the load in this static incremental analysis. The analysis value of the energy absorption amount of each layer and the analysis value of the energy absorption amount of each member including columns and beams, which are calculated for each step, are calculated by the analysis unit and recorded in the analysis result recording unit. . When an earthquake occurs, the energy absorption estimator calculates the estimated energy absorption in each floor of the building based on the earthquake information obtained from the sensors installed in the building and the weight of each floor of the building. do. The soundness determination unit selects, from among the analytical values of the energy absorption amount of each layer, the minimum difference analysis value of the energy absorption amount of each layer that minimizes the difference from the estimated value of the energy absorption amount of each layer. The incremental step at which the minimum difference analysis value corresponding to the minimum difference analysis value of the energy absorption amount of each layer was output is identified as the minimum difference incremental step. At the incremental step with the smallest difference identified in this way, the load is increased so that each layer absorbs the same amount of energy as it absorbed when the earthquake for which the seismic information was acquired occurred. state. Therefore, the analytical value of the amount of energy absorbed by each member at the stage of the incremental step with the smallest difference in the static incremental analysis is the amount of energy absorbed by each member when the earthquake for which the seismic information was acquired occurred. values are considered to be close to each other. Therefore, the estimated value of the energy absorption amount of each member is obtained from the analytical value of the energy absorption amount of each member corresponding to the incremental step with the smallest difference, and based on the estimated value of the energy absorption amount of each member, the damage determination threshold By calculating the degree of damage by comparing with the building, it is possible to evaluate the degree of damage to each member that constitutes the building and judge the soundness of the building.
In this way, by estimating the presence or absence of damage to the members that make up the building and the extent of the damage, it is possible to evaluate the damage to each member, resulting in a highly accurate and reliable assessment of the soundness of the building. It can be performed.
Furthermore, in the configuration as described above, although the damage evaluation can be performed for each member, it is not necessary to provide a sensor for each member, so a large number of sensors is not required.
Therefore, it is possible to provide a building soundness evaluation system that can accurately determine soundness with a simple configuration.

In one aspect of the present invention, the analysis unit includes a layer collapse type model in which parameters are set so that the building collapses in layers for the three-dimensional frame model, A static incremental analysis is performed for each of the total collapse type models whose parameters are set so as to collapse, and for each incremental step, the analytical value of the energy absorption amount of each layer and the energy absorption amount of each member are obtained. The analysis value of is calculated and recorded in the analysis result recording unit, and the identification unit of the incremental step is the analysis value of the energy absorption amount of each layer in the layer collapse model recorded in the analysis result recording unit. For each combination of the analytical values of the energy absorption amounts of the layers in the global collapse model, for each layer, the analytical values of the energy absorption amounts of the layers in the layer collapse model and the respective layers in the global collapse model Calculate the difference between the sum of the analytical value of the energy absorption amount and the estimated value of the energy absorption amount of each layer, and the minimum difference combination that is the combination that minimizes the sum of the differences in all layers, Selected as the difference minimum analysis value of the energy absorption amount of each layer, and the analysis value of the energy absorption amount of each layer in the layer collapse type model and the energy absorption amount of each layer in the total collapse type model in the minimum difference combination The incremental step in the layer collapse type model and the incremental step in the global collapse type model corresponding to the analytical value of are identified as the incremental step of the first difference minimum and the incremental step of the second difference minimum, respectively. , the soundness judging unit judges the soundness of the building based on the incremental step of the first minimum difference and the incremental step of the second minimum difference.
Here, the above-mentioned "layer collapse type model with parameters set so as to cause layer collapse" specifically means that a layer collapse mechanism is formed in which the column first yields at the column-to-beam joint. , beams, and panels with sufficiently large strengths. In addition, the above-mentioned "total collapse model with parameters set so as to cause total collapse" specifically has a total collapse mechanism in which the beam or joint panel yields first at the column-to-beam joint. As shown, it is a three-dimensional frame model in which the column strength of columns other than the first layer column base and the top layer column head is set sufficiently large.
According to such a configuration, there is a layer collapse type model in which parameters are set so that the building collapses in layers for the three-dimensional frame model, and a parameter is set in the three-dimensional frame model so that the building totally collapses. A static incremental analysis is performed for each of the global collapse models. For each combination of the analytical value of the energy absorption of each layer in the layer collapse type model and the analytical value of the energy absorption of each layer in the total collapse type model recorded in the analysis result recording part, the layer collapse Calculate the difference between the sum of the analytical value of the energy absorption of each layer in the model and the analytical value of the energy absorption of each layer in the total collapse model, and the estimated value of the energy absorption of each layer, and calculate the total of this difference. A minimum difference combination, which is a combination that minimizes the sum of the layers, is selected as the minimum difference analysis value of the energy absorption amount of each layer. Then, the increment step in the layer collapse type model and the increment step in the total collapse type model corresponding to the combination of the minimum difference selected in this way are set to the increment step of the first difference minimum and the increment step of the second difference minimum, respectively. Identifies as an incremental step.
Here, by static incremental analysis, combining the state in which the layer collapse and the total collapse have progressed to the incremental step of the first difference minimum and the incremental step of the second difference minimum identified as described above, each layer The energy absorption amount is close to the estimated value of the energy absorption amount when the earthquake for which the earthquake information was obtained occurred. That is, the increment step of the first difference minimum and the increment step of the second difference minimum can be regarded as progress of layer collapse and global collapse in the earthquake for which the earthquake information was acquired.
By judging the soundness of the building based on the incremental step of the first difference minimum and the incremental step of the second difference minimum, which are identified in this way, the damage caused to the building by the actually occurred seismic load can be determined. Therefore, it is possible to estimate a closer collapse state and evaluate the soundness of the building with higher accuracy.

In one aspect of the present invention, the soundness determination unit includes, for each member, the analytical value of the energy absorption amount of each member in the layer collapse model corresponding to the incremental step of the minimum first difference, and the Calculate the sum of the analytical values of the energy absorption amount of each member in the total collapse model corresponding to the incremental step with the smallest second difference, and use this as the estimated value of the energy absorption amount of each member to determine the damage Comparing with a threshold value, the degree of damage is calculated.
The analysis value of the energy absorption amount of each member in the layer collapse type model corresponding to the incremental step with the minimum first difference identified as described above, and the total collapse type model corresponding to the incremental step with the minimum second difference and the analytical value of the energy absorption amount of each member in . As already explained, the increment step of the first difference minimum and the increment step of the second difference minimum are the degrees of progression of layer collapse and total collapse in the earthquake for which the earthquake information was acquired. The sum of the analytical values of the energy absorption of each member corresponding to each of the incremental step of the first difference minimum and the incremental step of the second difference minimum obtained by In addition, it is considered to be a value close to the energy absorbed by each member. This sum is used as an estimate of the amount of energy absorbed by each member, and is compared with the damage threshold for each member to determine the soundness of the building. It can be carried out.

According to the present invention, it is possible to accurately determine soundness with a simple configuration.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the soundness-evaluation system of the building in this embodiment. FIG. 2 is a diagram schematically showing a layer collapse type collapse mechanism. FIG. 4 is a diagram schematically showing a collapse mechanism of a total collapse type; FIG. 3 is a diagram showing an example of a collapse mechanism during an actual earthquake, and schematically showing a collapse mechanism in which a layer collapse type and a general collapse type are combined. FIG. 3 is a diagram for explaining members that constitute a three-dimensional frame model; FIG. 10 is a diagram showing an example of static incremental analysis in a layer-collapsed three-dimensional frame model; FIG. 10 is a diagram showing an example of static incremental analysis in a totally collapsing three-dimensional frame model; FIG. 4 is a diagram showing an image of estimating the amount of energy absorbed in each layer of a building when an earthquake occurs by combining the amount of energy absorbed in a layer collapse model and the amount of energy absorbed in a global collapse model. FIG. 4 is a diagram showing the amount of energy absorbed by a member when the member is deformed for one cycle; 1 is a flow chart showing a flow of a building soundness evaluation method in a building soundness evaluation system; FIG. 4 is a diagram showing a verification example when the energy absorption amount of each member constituting a building is estimated for model 1 by the building soundness evaluation system according to the present embodiment; FIG. 10 is a diagram showing a verification example in the case of estimating an energy absorption amount of each member constituting a building with respect to model 2 by the building soundness evaluation system according to the present embodiment; FIG. 10 is a diagram showing a verification example when the energy absorption amount of each member constituting a building is estimated for model 3 by the building soundness evaluation system according to the present embodiment; FIG. 10 is a diagram showing a verification example when the energy absorption amount of each member constituting the building is estimated for model 4 by the building soundness evaluation system according to the present embodiment; FIG. 10 is a diagram showing a verification example when the energy absorption amount of each member constituting a building is estimated for model 5 by the building soundness evaluation system according to the present embodiment; FIG. 10 is a diagram showing a verification example in the case of estimating an energy absorption amount of each member constituting a building with respect to model 6 by the building soundness evaluation system according to the present embodiment;

EMBODIMENT OF THE INVENTION Hereinafter, with reference to an accompanying drawing, the form for implementing the soundness-evaluation system 1 of the building by this invention is demonstrated based on drawing.
FIG. 1 shows a schematic configuration of a building soundness evaluation system 1 according to this embodiment.
The present invention targets a building including columns and beams. Based on the results of static incremental analysis using a three-dimensional frame model composed of columns and beams, and seismic information obtained from sensors installed in the building, each layer of the building, And after estimating the amount of energy absorbed by each member, compare the estimated amount of energy absorption with the damage judgment threshold set for each member, calculate the degree of damage to each member, and diagnose the soundness of the building. It is a health monitoring system for the building to be evaluated.
As shown in FIG. 1 , the building soundness evaluation system 1 includes a building 10 and an evaluation device 20 . The building soundness evaluation system 1 evaluates the soundness of a building 10 after an earthquake occurs.
The building 10 is constructed on the ground and has a plurality of layers 11 in the vertical direction. In this embodiment, the building 10 is constructed as a so-called frame frame. The number of layers of the building 10 and the structure (reinforced concrete construction, steel frame construction, reinforced concrete construction, etc.) are not limited at all.
A building 10 is provided with a sensor 12 . The sensors 12 are installed on each floor 11 of the building 10 in this embodiment. Each sensor 12 detects acceleration waveform data on each floor 11 of the building 10 upon detection of shaking exceeding a preset threshold when an earthquake occurs. Each sensor 12 has a memory (not shown) and a communication unit (not shown). Each sensor 12 stores the detected acceleration waveform data in a memory (not shown) as earthquake information. After the earthquake ends, the sensor 12 transfers the acceleration waveform data stored in the memory to the evaluation device 20 via the external network 100 from the communication unit.
Here, the external network 100 is, for example, a public wireless network or the like that allows wireless communication with the communication unit. The communication unit transmits earthquake information detected by the sensor 12 to the evaluation device 20 via an external network 100 as shown in FIG.

The evaluation device 20 is connected to an external network 100 wirelessly or by wire. The evaluation device 20 evaluates the soundness of the building 10 based on the earthquake information detected by the sensor 12 .
FIG. 2 is a diagram schematically showing a layer collapse type collapse mechanism. FIG. 3 is a diagram schematically showing a total collapse type collapse mechanism. FIG. 4 is a diagram showing an example of a collapse mechanism during an actual earthquake, and schematically showing a collapse mechanism in which layer collapse type and global collapse type are combined.
When the rigid-frame frame forming the skeleton of the building 10 is subjected to strong vibration, the members are plasticized and a collapse mechanism is formed. As shown in Fig. 2, the collapse mechanism is divided into the "layer collapse type" where the column yields first at the column-to-beam joint, and the "layer collapse type" where the beam or column-to-beam joint yields first, as shown in Fig. 3. It is roughly divided into “total collapse type”. The collapse mechanism is assumed at the time of design based on the strength ratio of columns, beams, and joints between columns and beams. However, during an actual strong earthquake, it is affected by variations in input direction and member resistance strength, so the collapse mechanism is formed as expected. not necessarily. Also, as long as the strength ratio between members is not an extreme value, as shown in Fig. 4, during a strong earthquake, there is a high possibility that the damage distribution is a mixture of "layer collapse type" and "global collapse type". Therefore, even if the interlaminar deformation angle of each layer is known by monitoring with the sensor 12, it is considered that the members damaged and the degree of damage differ depending on the collapse mechanism formed at that time.
Therefore, based on the earthquake information detected by the sensor 12, the evaluation device 20 estimates the progress of each of the layer collapse type collapse mechanism and the total collapse type collapse mechanism that occurred in the building 10, and the estimation result Based on the above, the degree of damage to each member of the building 10 is estimated, and the soundness of the building is determined based on the degree of damage to each member.
Here, the above-mentioned "layer collapse type model with parameters set so as to cause layer collapse" specifically means that a layer collapse mechanism is formed in which the column first yields at the column-to-beam joint. , beams, and panels with sufficiently large strengths. In addition, the above-mentioned "total collapse model with parameters set so as to cause total collapse" specifically has a total collapse mechanism in which the beam or joint panel yields first at the column-to-beam joint. As shown, it is a three-dimensional frame model in which the column strength of columns other than the first layer column base and the top layer column head is set sufficiently large.

As shown in FIG. 1, the evaluation device 20 includes an analysis unit 21, an analysis result recording unit 27, an earthquake information recording unit 22, an energy absorption estimation unit 23, an incremental step identification unit 24, and a sound A gender determination unit 25 is mainly provided.
The analysis unit 21 analyzes in advance using a three-dimensional frame model M configured to correspond to the building 10 as shown in FIGS. An analytical value of the energy absorption amount and an analytical value of the energy absorption amount of each member constituting the building 10 are calculated. The analysis result recording unit 27 is a so-called database, and stores the analytical value of the energy absorption amount of each layer 11 of the building 10 calculated by the analysis unit 21, the analytical value of the energy absorption amount of each member constituting the building 10, is recorded.
FIG. 5 is a diagram for explaining the members that make up the three-dimensional frame model.
As shown in FIG. 5, the analysis unit 21 uses a three-dimensional frame model M including columns 16 and beams 17 for analysis. In the three-dimensional frame model M, the pillars 16 and beams 17 are replaced with wire rods as elements capable of considering deformation in axial, shear, bending, and torsional directions. Since both ends of the column 16 and the beam 17 become plastic during an earthquake, the energy absorption amount is calculated for each of the ends 16a, 16b, 17a, and 17b of the column 16 and the beam 17. FIG. A joint portion between the column 16 and the beam 17 is treated as a panel 19 composed of a rigid beam 19a and a diagonal member 19b formed by an elastic-plastic spring element, and the energy absorption amount is calculated.

The analysis unit 21 generates a layer collapse model M1 in which parameters are set so that the building 10 undergoes a layer collapse with respect to the three-dimensional frame model M shown in FIG. 2, and a three-dimensional frame model M shown in FIG. A static incremental analysis is performed using a total collapse model M2 whose parameters are set so that the building 10 totally collapses. Each parameter of the layer collapse model M1 is set so that the yield strength of the beams and panels is sufficiently increased, and layer collapse progresses during the static incremental analysis. In the total collapse model M2, except for the column base of the lowest layer and the column head of the uppermost layer, the bending strength of the end of the column is sufficiently large, and the total collapse progresses during the static incremental analysis. parameters are set.
FIG. 6 is a diagram showing an example of static incremental analysis in a layer collapse type space frame model. FIG. 7 is a diagram showing an example of static incremental analysis in a total collapsing three-dimensional frame model.
In the static incremental analysis, the load acting on the three-dimensional frame models M1 and M2 of the building 10, that is, the seismic force, is increased step by step, and the behavior of the building is analyzed at each incremental step. It is. In each of FIGS. 6 and 7, the left side shows the i1-th incremental step in which the amount of energy absorption of each layer and each member is small shortly after starting the static incremental analysis. The right side shows the i2-th incremental step, in which the load further progresses from the i1-th incremental step, the energy absorption amount of each layer and each member increases, and layer collapse or total collapse progresses. .
In the static incremental analysis, the Ai distribution, which is the external force distribution, is determined from the height of the building 10, the weight of each story 11, and the primary natural period for design. In the static incremental analysis, calculation is performed so as to gradually increase the external force while satisfying the Ai distribution.

Next, based on the results of the static incremental analysis, the analysis unit 21 calculates the analytical value of the energy absorption amount of each layer and the energy absorption of each member including the column 16 and the beam 17 for each incremental step in the static incremental analysis. Calculate the analytical value of the amount.
For this purpose, first, based on the results of the static incremental analysis for the layer collapse model M1, the analysis unit 21 performs the X direction, which is one direction located in the horizontal plane, and the direction orthogonal to the X direction in the horizontal plane. With each Y direction as the load direction, the energy absorption amount of each layer and the energy absorption amount of each member (column 16, beam 17, panel 19) for each incremental step that is the stage of increasing the load in static incremental analysis and are recorded in the analysis result recording unit 27 as an analysis value of the energy absorption amount of each layer and an analysis value of the energy absorption amount of each member.
Actually, the analysis unit 21 calculates the following values.
sE _wcX (i, j): Analysis value of the energy absorption amount of the j-th layer from the bottom in the i-th incremental step during loading in the X direction in the static incremental analysis result of the layer collapse model M1 sE _wcY (i, j): Analysis value of the energy absorption amount of the j-th layer from the bottom at the i-th incremental step during Y-direction loading in the static incremental analysis result of the layer collapse model M1 eE _wcX (i , k): Analysis value of the energy absorption amount of the k-th member at the i-th incremental step during loading in the X direction in the static incremental analysis result of the layer collapse model M1 eE _wcY (i, k): Analysis value of the energy absorption amount of the k-th member at the i-th incremental step during Y-direction loading in the static incremental analysis result of the layer collapse model M1 As shown in FIG. 6, the layer collapse model M1 Then, when the applied load in the loading direction (X direction, Y direction) along the horizontal plane is increased step by step, the bottom layer finally collapses, and the upper The amount of energy absorption in the lowest layer is significantly larger than that in the layer of . In addition, the collapse at the bottom layer is mainly due to the damage of the columns, and the amount of energy absorbed by the columns at the bottom layer is significantly larger than that of the beams, panels, etc. other than the columns.

In addition, based on the results of the static incremental analysis for the total collapse model M2, the analysis unit 21 calculates the energy absorption amount of each layer and each member (column 16, The energy absorption amount of the beam 17 and the panel 19) is calculated and recorded in the analysis result recording unit 27 as an analysis value of the energy absorption amount of each layer and an analysis value of the energy absorption amount of each member.
Actually, the analysis unit 21 calculates the following values.
sE _osX (i, j): Analysis value of the energy absorption amount of the j-th layer from the bottom in the i-th incremental step during loading in the X direction in the static incremental analysis result of the total collapse model M2 sE _osY (i, j): Analysis value of the energy absorption amount of the j-th layer from the bottom in the i-th incremental step during Y-direction loading in the static incremental analysis result of the global collapse model M2 eE _osX (i , k): Analysis value of the energy absorption amount of the k-th member at the i-th incremental step during X-direction loading in the static incremental analysis result of the global collapse model M2 eE _osY (i, k): Analysis value of the energy absorption amount of the k-th member at the i-th incremental step during Y-direction loading in the static incremental analysis result of the total collapse model M2 As shown in FIG. 7, the total collapse model M2 Then, when the applied load in the load direction (X direction, Y direction) along the plane is increased step by step, the energy absorption amount increases in all the layers of the building 10 . Similarly, the energy absorption amount of each member is increased. In each layer, not only columns but also beams, panels, etc. have increased energy absorption.

When an earthquake occurs, the earthquake information recording section 22 records earthquake information transmitted from the communication section 14 of the sensor 12 of the building 10 via the external network 100 . The earthquake information recording unit 22 records acceleration waveform data on each floor 11 of the building 10 detected by the sensor 12 when an earthquake occurs.
The energy absorption amount estimation unit 23 calculates the story shear force and interlayer displacement of each story 11 based on the earthquake information detected by the sensor 12 and the weight of each story 11 of the building 10, and based on the story shear force and the story displacement to calculate an estimate of the energy absorption of each layer.

と表される。なお、ＦＸ（ｊ）、ＦＹ（ｊ）、ＦＺ（ｊ）は、Ｍａｓｓ（ｊ）をｊ番目の層の重量、ａｂＡＣＣＸ（ｊ）、ａｂＡＣＣＹ（ｊ）、ａｂＡＣＣＺ（ｊ）を、それぞれ、ｊ番目の層におけるＸ方向、Ｙ方向、Ｚ方向の観測加速度とすると、次のように表される。
ＦＸ（ｊ）＝－Ｍａｓｓ（ｊ）×ａｂＡＣＣＸ（ｊ）
ＦＹ（ｊ）＝－Ｍａｓｓ（ｊ）×ａｂＡＣＣＹ（ｊ）
ＦＺ（ｊ）＝－Ｍａｓｓ（ｊ）×ａｂＡＣＣＺ（ｊ）
層間変位は、各層１１における加速度波形の２階積分を上下層で差分することにより算出される。 First, the energy absorption estimation unit 23 calculates the layer shear force in each layer 11 based on the acceleration waveform data of each layer 11 obtained by the sensor 12 during an earthquake and the weight of each layer 11 .
More specifically, let QX(j), QY(j), and QZ(j) denote the X direction, the Y direction, and the Z direction orthogonal to each of the X and Y directions, respectively, in the j-th layer. Let the shear forces, FX(j), FY(j), FZ(j), be the inertial forces in the X, Y, and Z directions, respectively, at the j-th layer. At this time, on the top floor, QX(j), QY(j), and QZ(j) are respectively
QX(j)=FX(j),
QY(j)=FY(j),
QZ(j)=FZ(j),
is represented. In addition, except for the top floor, the story shear force acting on the j-th layer from the bottom is the sum of the inertial forces in the higher layers, so if the total number of layers is T,

is represented. Note that FX(j), FY(j), and FZ(j) are Mass(j) for the weight of the j-th layer, and abACCX(j), abACCY(j), and abACCZ(j) for the j-th layer, respectively. Observed accelerations in the X, Y, and Z directions in the layer are expressed as follows.
FX(j)=−Mass(j)×abACCX(j)
FY(j)=−Mass(j)×abACCY(j)
FZ(j)=−Mass(j)×abACCZ(j)
The interlayer displacement is calculated by subtracting the second order integral of the acceleration waveform in each layer 11 between the upper and lower layers.

Next, the energy absorption amount estimating unit 23 calculates each layer in each of the two horizontal directions (X direction and Y direction) based on the layer shear force and the interlayer displacement in each layer 11 calculated as described above. Calculate an estimate of the energy absorption in 11.
In practice, the energy absorption amount estimator 23 calculates the following values.
sE _obsX (j): Estimated value of energy absorption in the j-th layer from the bottom in the X direction calculated based on earthquake information sE _obsY (j): Calculated based on earthquake information in the Y direction is an estimate of the energy absorption of the j-th layer from .
Specifically, the energy absorption amount estimating unit 23 estimates the energy absorption amount in each layer 11 based on the history area in the relationship between the story shear force in each layer 11 calculated from the earthquake information and the interlayer displacement. Calculate the values sE _obsX (j), sE _obsY (j).

The incremental step identification unit 24 obtains estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption of each layer from among the analytical values of the energy absorption of each layer 11 recorded in the analysis result recording unit 27 . is selected, and the incremental step corresponding thereto is identified as the incremental step with the minimum difference. The identification unit 24 of the increment step will be described in detail below.
_nwcX is the total number of incremental steps, which are stages of increasing the load during loading in the X direction, in the static incremental analysis result of the layer collapse type model M1, and _nwcY is the static incremental analysis result of the layer collapse type model M1. , the total number of incremental steps, _nosX , which is the stage of increasing the load during loading in the Y direction, is the stage of increasing the load during loading in the X direction in the static incremental analysis result of the total collapse model M2. Let the total number of incremental steps, _nosY , be the total number of incremental steps, which are stages of increasing the load, in the static incremental analysis results of the global collapse model M2 during loading in the Y direction.

The total number of incremental steps during X-direction loading in the static incremental analysis results of layer collapse model M1 is _nwcX , and the total number of incremental steps during X-direction loading in the static incremental analysis results of global collapse model M2 is n. Since it is _osX , the analytical value of the energy absorption amount of each layer at the time of X-direction loading in the static incremental analysis result of the layer collapse model M1, and the X-direction loading in the static incremental analysis result of the total collapse model M2 , there are n _wcX ×n _osX combinations with the analytical values of the energy absorption amount of each layer.
The incremental step identification unit 24 calculates the layer energy difference _ex when loaded in the X direction by the following formula (1) for all n _wcX ×n _osX combinations, and obtains the layer energy when loaded in the X direction The minimum difference combination, which is the combination that minimizes the difference _ex , is selected as the minimum difference analysis value of the energy absorption amount of each layer, and the energy absorption amount of each layer in the layer collapse model M1 among the minimum difference combinations is calculated. Incremental step i _wcX (1 ≤ i _wcX ≤ n _wcX) at the time of loading in the X direction in the static incremental analysis result of the layer collapse type model M1 corresponding to the analytical value and the analytical value of the energy absorption amount of each layer in the total collapse type model M2 ) and the incremental step i _osX (1≦i _osX ≦n _osX ) at the time of loading in the X direction in the static incremental analysis result of the global collapse model M2.

Similarly, the analysis value of the energy absorption amount of each layer during the Y-direction loading in the static incremental analysis results of the layer collapse model M1, and the Y-direction loading in the static incremental analysis results of the total collapse model M2, each layer There are n _wcY ×n _osY combinations with the analytical values of the amount of energy absorption.
The incremental step identification unit 24 calculates the layer energy difference e _Y during loading in the Y direction by the following formula (2) for all n _wcY ×n _osY combinations, and obtains the layer energy during loading in the Y direction. The minimum difference combination, which is the combination that minimizes the difference e _Y , is selected as the minimum difference analysis value of the energy absorption of each layer, and the energy absorption of each layer in the layer collapse model M1 among the minimum difference combinations is calculated. Incremental step i _wcY (1 ≤ i _wcY ≤ n _wcY) in the static incremental analysis result of the layer collapse type model M1 corresponding to the analytical value and the analytical value of the energy absorption amount of each layer in the total collapse type model M2 ) and an incremental step i _osY (1≦i _osY ≦n _osY ) during Y-direction loading in the static incremental analysis result of the global collapse model M2.

The operation of the incremental step identification unit 24 and the soundness determination unit 25, which will be described later, is to determine the amount of energy absorbed by each layer (and each member) and the is based on the premise that each layer (and each member) absorbs the same amount of energy when the building 10 is newly constructed.
For example, let us consider a case where the entire building 10 collapses, and then layer collapse progresses. In such a case, the amount of energy Ea that the building 10 finally absorbs is the amount of energy E1 that the building 10 absorbs from the time the building 10 is newly built until the time when the total collapse has finished progressing, and It can be considered as the sum E1+E2 of the amount of energy E2 absorbed from the point in time to the point in time when the layer collapse has finished progressing.
Here, according to the above premise, the amount of energy E2 absorbed from the time when the total collapse has finished progressing to the time when the story collapse has finished progressing is is equal to the amount of energy E2' absorbed by the time when the layer collapse has finished progressing. That is, the above sum E1+E2 is the amount of energy E1 absorbed from the time the building 10 is newly built until the time when the total collapse progresses, and It is equal to the sum E1+E2' of the amount of energy E2' absorbed by the time when the movement is finished.
Therefore, based on the above premises, from the viewpoint of the amount of energy absorbed by each layer and each member, even if the building 10 were to undergo layer collapse and total collapse at the same time, this would not be the case. can be regarded as the sum of the states in which the building 10 has undergone separate layer collapse and total collapse, each progressing to a certain degree.

FIG. 8 is a diagram showing an image of estimating the amount of energy absorbed in each layer of a building at the time of an earthquake by combining the amount of energy absorbed in the layer collapse type model and the amount of energy absorbed in the global collapse type model. .
Based on the above considerations, in the present embodiment, when an earthquake actually occurs, it is assumed that the building 10 is affected by a layer collapse and a total collapse due to the earthquake, and each layer calculated from the earthquake information Estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption amounts of are recorded in the analysis result recording unit 27, at any stage of the static incremental analysis using the layer collapse model M1 (i.e. Analysis values sE _wcX (i _{wcX , j} ) and sE _wcY (i _wcY , j) of the energy absorption amount of each layer at incremental steps i wcX , i wcY ), and the static incremental analysis using the total collapse model M2, Can it be expressed as the sum of the analytical values sE _osX ( _iosX , _j ) and sE _osY (i _osY , j) of the energy absorption of each layer at any stage (i.e., incremental steps i _osX , i osY )? Consider.
If the estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption of each layer calculated from the earthquake information are recorded in the analysis result recording unit 27, the static increment using the layer collapse model M1 Analytical values _sEwcX ( _iwcX ,j) and _sEwcY ( _iwcY ,j) of the energy absorption of each layer at some incremental steps _{iwcX and iwcY} of the analysis, and static increments using the total collapse model M2 It seems to match or approximate the sum of the analytical values _{sE osX (} i _osX ,j) and sE _osY (i _osY ,j) of the energy absorption of each layer at some incremental step i _osX , i osY of the analysis. If so, in this earthquake, the static incremental analysis using the layer collapse model M1 shows the state in which the layer collapse progresses by the incremental steps i _wcX and i _wcY , and the static incremental analysis using the global collapse model M2 The states in which the global decay has advanced by incremental steps i _osX , i _osY can be considered combined states.

Here, the layer energy difference e _x during loading in the X direction expressed as Equation (1) as described above is an incremental step i _wcX and _{the analytical value} sE _osX (i _osX , j) is the sum of the differences from the energy absorption amount sE _obsX (j) in the X direction calculated from the seismic information for each layer.
Therefore, the analytical value _{sE wcX (} i _wcX ,j) and the analysis value sE _osX (i _osX ,j) of the energy absorption amount during loading in the X direction in the static incremental analysis result of the total collapse type model M2. By selecting the difference minimum analysis value of the energy absorption amount of each layer, the analysis value sE _wcX (i _wcX , j) of the energy absorption amount of each layer in the layer collapse type model M1 and the total collapse type model in this difference minimum combination The increment step i _{wcX and} the increment step i osX corresponding to the analytical value sE _{osX (} i _osX , j) of the energy absorption amount of each layer in M2 are set to the first difference minimum increment step i _wcX and the second difference minimum increment step, respectively. It can be identified as _iosX .
Similarly, the layer energy difference e _Y during loading in the Y direction expressed as Equation (2) as described above is a certain incremental step i _wcY and _{the analytical value} sE It is the sum of the difference between the sum of _osY (i _osY , j) and the energy absorption amount sE _obsY (j) in the Y direction calculated from the seismic information for each layer.
Therefore, the analysis value _{sE wcY (} i _wcY , j) and the analysis value sE _osY (i _osY , j) of the energy absorption amount during Y-direction loading in the static incremental analysis result of the total collapse model M2. By selecting the difference minimum analysis value of the energy absorption amount of each layer, the analysis value sE _wcY (i _wcY , j) of the energy absorption amount of each layer in the layer collapse type model M1 and the total collapse type model in this combination of the minimum difference The increment step i _{wcY and} the increment step i osY corresponding to the analytical value sE _{osY (} i _osY , j) of the energy absorption amount of each layer in M2 are set to the first difference minimum increment step i _wcY and the second difference minimum increment step, respectively. can be identified as i _osY .

Based on the above considerations, the incremental step identification unit 24 determines, in the X direction, the analytical value sE _wcX (i, j) of the energy absorption amount of each layer in the layer collapse model M1 and the total collapse model M2 For each of n _wcX ×n _osX combinations of the analytical value sE _osX (i, j) of the energy absorption amount of each layer, the analytical value of the energy absorption amount of each layer in the layer collapse model M1 for each layer 11 The difference between the sum of sE _wcX (i, j) and the analytical value sE _osX (i, j) of the energy absorption of each layer in the global collapse model M2, and the estimated value sE _obsX (j) of the energy absorption of each layer is calculated, and the minimum difference combination, which is a combination of analytical values that minimizes the sum of the differences e _x in all layers, is selected as the minimum difference analytical value of the energy absorption amount of each layer, and among the minimum difference combinations , corresponding to the analytical value sE _wcX (i _wcX , j) of the energy absorption of each layer in the layer collapse model M1 and the analytical value sE _osX (i _osX , j) of the energy absorption of each layer in the total collapse model M2, The incremental step _iwcX in the layer collapse type model M1 and the incremental step _iosX in the total collapse type model M2 are identified as the first difference minimum incremental step _iwcX and the second difference minimum incremental step _iosX , respectively.
Similarly, the incremental step identification unit 24 calculates the analytical value sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 and the energy absorption of each layer in the total collapse model M2 in the Y direction. For each of n _wcY ×n _osY combinations of the analytical value sE _osY (i, j), for each layer 11, the analytical value sE _wcY (i, j) of the energy absorption amount of each layer in the layer collapse model M1 ) and the analytical value sE _osY (i, j) of the energy absorption of each layer in the total collapse model M2, and the estimated value sE _obsY (j) of the energy absorption of each layer. A minimum difference combination that is a combination of analysis values that minimizes the total sum e _Y in all layers is selected as the minimum difference analysis value of the energy absorption amount of each layer, and the layer collapse type model M1 in the minimum difference combination in the layer collapse model M1 corresponding to the analytical value sE _wcY (i _wcY , j) of the energy absorption of each layer in and the analytical value sE _osY ( _iosY , j) of the energy absorption of each layer in the total collapse model M2 The incremental step i _wcY and the incremental step i _osY in the total collapse model M2 are identified as the first difference minimum incremental step i _wcY and the second difference minimum incremental step i _osY , respectively.

このようにして、健全性判定部２５は、部材ごとに、第１差分最小の増分ステップｉ_ｗｃＸ、ｉ_ｗｃＹに対応する、層崩壊型モデルＭ１における各部材のエネルギー吸収量の解析値ｅＥ_ｗｃＸ（ｉ_ｗｃＸ，ｋ）、ｅＥ_ｗｃＹ（ｉ_ｗｃＹ，ｋ）と、第２差分最小の増分ステップｉ_ｏｓＸ、ｉ_ｏｓＹに対応する、全体崩壊型モデルＭ２における各部材のエネルギー吸収量の解析値ｅＥ_ｏｓＸ（ｉ_ｏｓＸ，ｋ）、ｅＥ_ｏｓＹ（ｉ_ｏｓＹ，ｋ）の和を計算することにより、各部材のエネルギー吸収量の推定値ｅＥ_ｏｂｓ（ｋ）を導出する。 The soundness determination unit 25 determines the incremental steps i _wcX and i wcY with the first difference minimum and the incremental steps i _osX and i _osY with the second minimum difference in _each of the X and Y directions identified as described above. Based on this, the soundness of the building 10 is determined.
As described above, the incremental step identification unit 24 identifies incremental steps i _wcX and i _wcY with the smallest first difference and incremental steps i _osX and i _osY with the smallest second difference in each of the X and Y directions. In the earthquake for which the earthquake information was acquired, in each of the static incremental analysis using the layer collapse model M1 and the static incremental analysis using the global collapse model M2, up to which stage, that is, the incremental step, It is specified whether it is in a state where layer collapse and global collapse have progressed. Then, in an actual earthquake, each member is considered to have absorbed the amount of energy absorbed at the incremental steps i _wcX and i _wcY in the static incremental analysis using the layer collapse model M1. Values eE _wcX (i _wcX , k), eE _wcY (i _wcY , k) and incremental steps i _osX , i _osY in the static incremental analysis using the total collapse model M2 It can be assumed that energy corresponding to the sum of the analytical values eE _osX (i _osX , k) and eE _osY (i _osY , k) of the amount of absorbed energy is absorbed.
Accordingly, the soundness determination unit 25 specifically calculates the estimated value eE _obs (k) of the energy absorption amount of each member by the following equation (3).

In this way, the soundness determination unit 25 determines the analytical value _{eE wcX (} i _wcX , k), eE _wcY (i _wcY , _{k )} and the analytical values eE _osX ( By calculating the sum of i _osX ,k) and eE _osY (i _osY ,k), the energy absorption estimate eE _obs (k) of each member is derived.

The soundness determination unit 25 further estimates the energy absorption amount of each member derived based on the first difference minimum incremental steps i _wcX and i _wcY and the second difference minimum incremental steps i _osX and i _osY . The soundness of the building 10 is determined based on the value eE _obs (k). The soundness determination unit 25 compares the estimated value eE _obs (k) of the energy absorption amount of each member with a preset damage determination threshold to calculate the degree of damage. When the estimated energy absorption amount eE _obs (k) of each member is larger than the damage determination threshold, the soundness determination unit 25 determines that the member may be damaged.
Here, as the damage determination threshold value, for example, the damage determination threshold value _μcr of the plasticity rate can be set according to the plastic deformation performance of the member. As shown in FIG. 9, when the member is deformed for one cycle with a plasticity factor μ, the energy absorption amount E in the member is expressed by the following formula (4).
E=4(μ−1) Myθy (4)
Therefore, the damage threshold E _cr of the energy absorption amount of the member is
E _cr =4(μ _cr −1)M _y θ _y
becomes.
For example, a rectangular steel pipe with a member half length from the end to the center of 1750 mm, a yield strength of 295 N/ ^mm2 , a cross-sectional dimension of 300 mm × 300 mm, and a thickness of 9 mm (bending moment at yield My = 327 kNm , member angle θy=0.0065 rad at yield), and μ _cr =3.0, E _cr =17.0 kNm.
Such a damage determination threshold is not limited to the above, and may be appropriately set by another method, or may be set in a different manner for each member type such as the pillar 16 and the beam 17 .
The soundness determination unit 25 outputs information indicating the determination result such as the calculated degree of damage and whether or not the member is damaged, through a monitor device or other terminal that can be accessed via the external network 100. do.
The degree of damage referred to above is evaluated from degree of damage I to degree of damage IV. Damage degree I was defined as a state in which there was almost no damage to columns, beams, and load-bearing walls. The degree of damage II was defined as a state in which slight cracks occurred in columns, beams, and load-bearing walls. In addition, damage level III is defined as a state in which significant shear cracks are observed in columns, beams, and bearing walls, and damage level IV is a state in which large shear cracks are observed in columns, beams, and bearing walls, causing severe damage. defined as

In this way, the soundness determination unit 25 obtains the estimated energy absorption amount eE _obs (k) of each member corresponding to the incremental steps i _wcX , i _wcY , i _osX , and i _osY with the smallest difference, and The degree of damage is calculated by comparing with a damage determination threshold value set for each member, and the soundness of the building 10 is determined based on the degree of damage to each member.
The soundness of the building 10 here is evaluated in terms of safety, caution, and danger. The safety index based on soundness evaluation corresponds to the degree of damage I and II. Further, the caution index by the soundness evaluation corresponds to the damage level III, and the danger index corresponds to the damage level IV.

(Soundness evaluation method)
FIG. 10 is a flow chart showing the flow of the building soundness evaluation method in the building soundness evaluation system 1 .
In order to perform the soundness evaluation of the building 10 with the evaluation device 20, as a preliminary preparation, the analysis unit 21 performs static incremental analysis in advance using the layer collapse model M1 and the global collapse model M2. The analysis unit 21 calculates an analysis value of the energy absorption amount of each layer and an analysis value of the energy absorption amount of each member for each incremental step which is a step of increasing the load in the static incremental analysis. The calculated analytical value of the energy absorption amount of each layer and the calculated analytical value of the energy absorption amount of each member are recorded in the analysis result recording unit 27 .
After that, when an earthquake occurs, the evaluation device 20 acquires earthquake information detected by the sensor 12 provided in the building 10 from the external network 100 (step S11).
When the earthquake information is acquired, the estimation unit 23 of the energy absorption amount of the evaluation device 20 calculates the story shear force and interlayer displacement of each story 11 based on the earthquake information detected by the sensor 12 and the weight of each story 11 of the building 10. Then, an estimated value of the energy absorption amount of each layer is calculated based on the calculated layer shear force and interlayer displacement (step S12).

Subsequently, the incremental step identification unit 24 selects the layer whose difference from the estimated value of the energy absorption amount of each layer is the smallest among the analysis values of the energy absorption amount of each layer recorded in the analysis result recording unit 27. The minimum difference analysis value of the amount of energy absorption is selected, and the incremental step corresponding thereto is identified as the incremental step with the minimum difference (step S13).
More specifically, the incremental step identification unit 24 compares the analysis values of the energy absorption amount of each layer in the layer collapse type model M1 recorded in the analysis result recording unit 27 in each of the X direction and the Y direction, and the total collapse type For each combination of the analytical value of the energy absorption amount of each layer in the model M2, for each layer, the analytical value of the energy absorption amount of each layer in the static incremental analysis result of the layer collapse type model M1 and the total collapse type model M2 Calculate the difference between the sum of the analytical value of the energy absorption amount of each layer in the static incremental analysis result and the estimated value of the energy absorption amount of each layer, and find the combination that minimizes the total sum of the differences for all layers. The difference minimum combination is selected as the difference minimum analysis value of the energy absorption amount of each layer, and the analysis value of the energy absorption amount of each layer in the layer collapse model M1 and each layer in the total collapse model M2 in the difference minimum combination are selected. The incremental step in the layer collapse model M1 and the incremental step in the total collapse model M2 corresponding to the analytical value of the energy absorption amount are identified as the incremental step of the first difference minimum and the incremental step of the second difference minimum, respectively. do.

The soundness determination unit 25 determines, for each member, the analysis value of the energy absorption amount of each member in the layer collapse model M1, which corresponds to the incremental step of the minimum first difference, and the incremental step of the minimum second difference, By calculating the sum of the analytical values of the energy absorption of each member in the total collapse model M2, an estimated value of the energy absorption of each member is derived (step S14).
After that, the soundness determination unit 25 determines the soundness of the building 10 based on the estimated value of the energy absorption amount of each member derived based on the incremental step of the first difference minimum and the incremental step of the second difference minimum. is determined (step S15). The soundness determination unit 25 compares the estimated value of the energy absorption amount of each member with a preset damage determination threshold to calculate the degree of damage. The soundness determination unit 25 determines that the member may be damaged when the estimated value of the energy absorption amount of each member is larger than the damage determination threshold value.
Furthermore, the soundness determination unit 25 sends information indicating the determination result such as the calculated degree of damage and whether or not the member is damaged, to a monitor device, other terminals accessible via the external network 100, etc. (step S16).

(Verification of estimation accuracy by soundness evaluation method)
Here, the estimation accuracy of the building soundness evaluation system 1 of the present invention was verified.
Six types of models, model 1 to model 6, were prepared as the framework for realizing the building to be verified.
Model 1 has four layers, a column span in the X direction of 2, a column span in the Y direction of 1, and a column yield strength ratio γ, which is the yield strength ratio of a column to a beam or panel, set to 1.0.
Model 2 has four layers, a column span in the X direction of 2, a column span in the Y direction of 1, and a column strength ratio γ of 1.5.
Model 3 has eight layers, a column span in the X direction of 3, a column span in the Y direction of 2, and a column strength ratio γ of 1.0.
Model 4 has eight layers, a column span in the X direction of 3, a column span in the Y direction of 2, and a column strength ratio γ of 1.5.
Model 5 has 12 layers, a column span of 4 in the X direction, a column span of 3 in the Y direction, and a column strength ratio γ of 1.0.
Model 6 has 12 layers, a column span in the X direction of 4, a column span in the Y direction of 3, and a column strength ratio γ of 1.5.
The structural characteristic factor Ds was set to 0.4 in all the above models.
For each of these models, the Hachinohe wave, level 3, was input as an input seismic wave from a direction forming an angle of 45° with respect to each of the X and Y directions. In this case, the energy absorption amount of each member in each of the X direction and the Y direction calculated from the acceleration information detected by the sensor 12 is set as the correct value, and the energy of each member estimated by the soundness evaluation system 1 The estimated value eE _obs (k) of the amount of energy absorption was used as the estimated value.

11 to 16 are diagrams showing verification examples when the energy absorption amount of each member constituting the building is estimated for each of the models 1 to 6 by the building soundness evaluation system 1 according to this embodiment. is. 11 to 16 show the difference between the correct value and the estimated value at both ends of the column or beam and at the panel.
From each figure, in the model in which the column strength ratio γ is set as small as 1.0, the layer collapse mechanism of the lowest layer is dominant, so the static analysis results of the layer collapse type model M1 are reflected as they are, and the correct answer is It can be confirmed that the estimation is close to the value.
Even in a frame where the total collapsing mechanism is dominant, where the column strength ratio γ is set to 1.5, the energy absorption of the columns can be estimated with high accuracy, and the beams and panels also have a large amount of energy absorption. Generally consistent. Here, there is a correct value for the amount of energy absorption that differs greatly at both ends of a single beam. It is thought that the energy absorption was concentrated at the other end without considering the composite effect, and the estimated value based on the static analysis, which does not consider the synthetic effect, and the difference occurred.
In this verification, an example of a rigid-frame frame of steel structure was shown. Validity is considered to be ensured at response levels at which no

The soundness evaluation system 1 for the building 10 as described above is a soundness evaluation system 1 for diagnosing and evaluating the soundness of the building 10, and is configured to correspond to the building 10 including the pillars 16 and the beams 17. Static incremental analysis is performed in advance using the three-dimensional frame model M (M1, M2), and the analytical value sE _wcX (i , j), sE _wcY (i, j), sE _osX (i, j), sE _osY (i, j), and the analytical value eE _wcX (i, k), eE _wcY (i, k), eE _osX (i, k), and eE _osY (i, k) are calculated and recorded in the analysis result recording unit 27, and the sensor 12 installed in the building 10 Based on the earthquake information recording unit 22 that records the earthquake information obtained from the earthquake information and the weight of each layer 11 of the building 10, the story shear force and interlayer displacement of each story 11 are calculated, and based on the story shear force and interlayer displacement an energy absorption estimator 23 for calculating the estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption of each layer, and the analytical values of the energy absorption of each layer recorded in the analysis result recording unit 27 From among sE _wcX (i, j), sE _wcY (i, j), sE _osX (i, j), and sE _osY (i, j), estimated values sE _obsX (j), sE The difference minimum analysis value of the energy absorption amount of each layer that minimizes the difference from _obsY (j) (the analysis value of the energy absorption amount of each layer in the layer collapse model M1 sE _wcX (i, j), sE _wcY (i, j ) and the analytical values sE _osX (i, j) and sE _osY (i, j) of the energy absorption of each layer in the total collapse model M2), and the corresponding incremental step is set to the minimum difference The identification part 24 of the incremental steps identified as the incremental steps i _wcX , i _wcY , i _osX and i _osY , and the energy absorption amount of each member corresponding to the incremental steps i _wcX , i _wcY , i _osX and i _osY with the smallest difference. From the analytical values eE _wcX (i _wcX , k), eE _wcY (i _wcY , k), eE _osX ( _iosX , k), and eE _osY ( _iosY , k), the energy absorption amount eE _obs (k) is obtained, the estimated value eE _obs (k) of the energy absorption amount of each member is compared with the damage determination threshold set for each member, the degree of damage is calculated, and the degree of damage of each member is calculated. A soundness determination unit 25 that determines the soundness of the building 10 based on the degree of damage.
According to such a configuration, the static incremental analysis is performed using the three-dimensional frame model M (M1, M2) configured to correspond to the building 10 including the columns 16 and the beams 17, and the static incremental analysis Analytical values sE _wcX (i, j), sE _wcY (i, j), sE _osX (i, j), and sE _osY (i, j) and the analytical values eE _wcX (i, k), eE _wcY (i, k), eE _osX (i, k), eE _osY ( i, k) are calculated by the analysis unit 21 and recorded in the analysis result recording unit 27 . When an earthquake occurs, the energy absorption amount estimating unit 23 estimates energy absorption in each floor of the building 10 based on the earthquake information obtained from the sensor 12 installed in the building 10 and the weight of each floor 11 of the building 10. Calculate the quantity estimates sE _obsX (j), sE _obsY (j). The soundness determination unit 25 selects from the analytical values sE _wcX (i, j), sE _wcY (i, j), sE _osX (i, j), and sE _osY (i, j) of the energy absorption amount of each layer, By selecting the minimum difference analysis value of the energy absorption of each layer that minimizes the difference from the estimated values of energy absorption sE _obsX (j) and sE _obsY (j) of each layer, the energy absorption of each selected layer corresponding to the analytic values _sEwcX (i,j), _sEwcY (i,j), _sEosX (i,j), _sEosY (i,j) of Identify the steps as the incremental steps i _wcX , i _wcY , i _osX , i _osY with the smallest difference. At the incremental steps i _wcX , i _wcY , i _osX , and i _osY identified in this way with the smallest difference, the energy that is approximately the same as the energy absorbed by each layer 11 when the earthquake for which the earthquake information was obtained occurred occurred. The load is increased so that each layer 11 can absorb it. Therefore, the analysis value eE _obs (k) of the energy absorption amount of each member at the stages of the incremental steps i _wcX , i _wcY , i _osX and i _osY with the smallest difference in the static incremental analysis is It is considered to be a value close to the amount of energy absorbed by each member when an earthquake occurs. Therefore, _the analytical values _eEwcX ( _{iwcX , k} ), _{eEwcY ( iwcY} ,k), _eEosX From (i _osX , k) and eE _osY (i _osY , k), the estimated value eE _obs (k) of the energy absorption of each member is obtained, and the estimated value eE _obs (k) of the energy absorption of each member is obtained. By calculating the degree of damage by comparing with the damage determination threshold based on, the degree of damage to each member constituting the building 10 can be evaluated, and the soundness of the building 10 can be determined.
In this way, by estimating the presence or absence of damage occurring in the members constituting the building 10 and the degree of damage, it is possible to perform damage evaluation for each member, and the soundness of the building 10 with high accuracy and high reliability. Gender assessment can be performed.
Furthermore, in the configuration as described above, although the damage evaluation can be performed for each member, it is not necessary to provide a sensor for each member, so a large number of sensors is not required.
Therefore, it is possible to provide the building soundness evaluation system 1 that can accurately determine soundness with a simple configuration.

In addition, the analysis unit 21 performs a layer collapse model M1 in which parameters are set so that the building 10 undergoes a layer collapse with respect to the three-dimensional frame model M (M1, M2), and the three-dimensional frame model M (M1, M2). Static incremental analysis is performed on each of the total collapse model M2, the parameters of which are set so that the building 10 totally collapses, and the analytical value sE _wcX (i , j), sE _wcY (i, j), sE _osX (i, j), sE _osY (i, j), and analytical values eE _wcX (i, k), eE _wcY (i , k), eE _osX (i, k), and eE _osY (i, k) are calculated and recorded in the analysis result recording unit 27, and the incremental step identification unit 24 is recorded in the analysis result recording unit 27, Analysis values sE _wcX (i, j) and sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 and analysis values sE _osX (i, j) of the energy absorption of each layer in the total collapse model M2 ), sE _osY (i, j), the analytical values sE _wcX (i, j) and sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 for each layer The sum of the analytical values sE _osX (i, j) and sE _osY (i, j) of the energy absorption of each layer in the total collapse model M2, and the estimated values sE _obsX (j) and sE _obsY of the energy absorption of each layer calculating the difference from (j), and selecting the minimum difference combination, which is the combination that minimizes the total sum e _X and e _Y of the differences in all layers, as the minimum difference analysis value of the energy absorption amount of each layer; Analysis values sE _wcX (i, j) and sE _wcY (i _wcY , j) of the energy absorption of each layer in the layer collapse model M1 and the energy absorption of each layer in the total collapse model M2 in the minimum difference combination Incremental steps i _wcX and i _wcY in the layer collapse model _M1 and incremental steps i osX and i _osY in the total collapse model M2 corresponding to the analytical values sE _osX (i, _j ) and sE osY (i osY , _j ) are respectively identified as the first difference minimum incremental steps i _wcX and i _wcY and the second difference minimum incremental steps i _osX and i _osY , and the soundness determination unit 25 identifies the first difference minimum incremental steps i _wcX , i _wcY and the incremental steps i _osX and i _osY with the smallest second difference, the soundness of the building 10 is determined.
According to such a configuration, the layer collapse type model M1 whose parameters are set so that the building 10 undergoes a layer collapse with respect to the three-dimensional frame model M (M1, M2), and the three-dimensional frame model M (M1, M2). On the other hand, static incremental analysis is performed for each of the total collapse model M2 whose parameters are set so that the building 10 totally collapses. The analytical values sE _wcX (i, j) and sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 and the energy absorption of each layer in the total collapse model M2 recorded in the analysis result recording unit 27 _{The analytical value sE wcX ( i} , j), sE _wcY (i, j) and the sum of the analytical values sE _osX (i, j) and sE _osY (i, j) of the energy absorption of each layer in the total collapse model M2, and the energy absorption of each layer Calculate the difference between the estimated values sE _obsX (j) and sE _obsY (j) of the amounts, and select the minimum difference combination that minimizes the total sum e _X and e _Y of this difference in all layers 11, It is selected as the difference minimum analysis value of the energy absorption amount of each layer. Then, the incremental steps i _wcX and i wcY in the layer collapse model M1 and the incremental steps i _osX and _{i osY in} the total collapse model M2 corresponding to the combination of the minimum difference selected in this manner are set to the first Identify the minimum difference increment steps i _wcX , i _wcY and the second minimum difference increment steps i _osX , i _osY .
Here, by static incremental analysis, the first difference minimum incremental steps i _wcX , i _wcY and the second difference minimum incremental steps i _osX , i _osY identified above for layer and global collapse, respectively The energy absorption of each layer is close to the estimated energy absorption sE _osX (i, j) and sE _osY (i, j) at the time of the earthquake for which the seismic information was acquired. value. That is, the incremental steps i _wcX and i _wcY with the smallest first difference and the incremental steps i _osX and i _osY with the smallest second difference can be regarded as the degree of progression of layer collapse and total collapse in the earthquake for which the earthquake information was acquired. can be made.
By determining the soundness of the building 10 based on the incremental steps i _wcX and i _wcY for the first difference minimum and the incremental steps i _osX and i _osY for the second minimum difference thus identified, It is possible to estimate a state of collapse that is closer to the damage caused to the building 10 by an actual seismic load, and to evaluate the soundness of the building 10 with higher accuracy.

In addition, the soundness _{determination} unit 25 calculates the analytical values eE _wcX (i _{wcX ,} k), eE _wcY (i _wcY , k), and the analytical value eE _osX (i osX , k) of _the energy absorption amount of each member in the total collapse type model M2 corresponding to the incremental steps i _osX and i _osY with the smallest second difference k), calculate the sum eE _obs (k) of eE _osY (i _osY , k), use this as the estimated value eE _obs (k) of the energy absorption amount of each member, and compare it with the damage determination threshold to determine the degree of damage to calculate
Analytical values eE _wcX (i _wcX , k) and eE _wcY of the energy absorption of each member in the layer collapse model M1 corresponding to the incremental steps i _wcX and i _wcY with the minimum first difference identified as described above (i _wcY , k) and the analytical values eE _osX ( _iosX , k) and eE _osY of the energy absorption amount of each member in the total collapse model M2 corresponding to the incremental steps i _osX and i _osY with the smallest second difference (i _osY , k) are obtained respectively. As already explained, the increment steps i _wcX and i _wcY for the first difference minimum and the increment steps i _osX and i _osY for the second difference minimum are each of the layer collapse and the global collapse in the earthquake for which the earthquake information was acquired. Since it is the degree of progress, the energy of each member corresponding to the incremental steps i _wcX and i _wcY with the smallest first difference and the incremental steps i _osX and i _osY with the smallest second difference, which are obtained as described above, The sum of the analytical absorption values eE _wcX (i _wcX , k), eE _wcY (i _wcY , k), eE _osX ( _iosX , k), and eE _osY ( _iosY , k) eE _obs (k) is the It is considered to be a value close to the energy absorbed by each member when the earthquake for which the information was acquired occurred. This sum is used as an estimated value eE _obs (k) of the energy absorption amount of each member, and is compared with the damage determination threshold for each member to determine the soundness of the building 10. Evaluations can be made with greater accuracy.

(First modification of the embodiment)
It should be noted that the soundness evaluation system 1 of the present invention is not limited to the above-described embodiments described with reference to the drawings, and various other modifications are conceivable within the technical scope thereof.
For example, in the above embodiment, if the direction in which the seismic force acts is substantially along the X direction, the incremental step identification unit 24 and soundness determination unit 25 perform analysis in the Y direction. Alternatively, the analysis may be performed only in the X direction without performing the analysis.
In this case, the incremental step identification unit should calculate only the X-direction loading layer energy difference e _x in Equation (1), and not calculate the Y-direction loading layer energy difference e _Y in Equation (2). good too. Further, when calculating the estimated value eE _obs (k) of the energy absorption amount of each member in Equation (3), the soundness determination unit 25 calculates the analytical value eE _wcX (i, k), add only eE _osX (i, k) and do not use the analytical values eE _wcY (i, k), eE _osY (i, k) of the energy absorption of each member in the Y direction.
The same applies when the direction in which the seismic force acts is substantially along the Y direction.

(Second modification of the embodiment)
Alternatively, in the case where it is known in advance that the layer collapse is dominant over the total collapse due to the structure of the building, the building soundness evaluation system 1 is operated only for the layer collapse model M1. can be configured to
In this case, the analysis unit 21 performs a static incremental analysis on the layer collapse model M1 in which the parameters are set so that the building 10 will collapse from the three-dimensional frame model M (M1), At each incremental step, the analytical values sE _wcX (i, j), sE _wcY (i, j) of the energy absorption of each layer and the analytical values eE _wcX (i, k), eE _wcY ( i, k) are calculated and recorded in the analysis result recording unit 27 .
Next, the energy absorption estimation unit 23 calculates the estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption in each layer 11 in the same manner as in the above embodiment.
Then, the incremental step identification unit 24 calculates the analytical values sE _wcX (i, j) and sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 recorded in the analysis result recording unit 27. For each layer, the analytical values sE _wcX (i, j) and sE _wcY (i, j) of the energy absorption of each layer in the layer collapse model M1 and the estimated value sE _obsX of the energy absorption of each layer (j), the difference from sE _obsY (j) is calculated, and the analytical value of the energy absorption that minimizes the sum of the differences e _X and e _Y in all layers is determined as the minimum difference in the energy absorption of each layer. The incremental steps i _wcX and i _wcY in the layer collapse type model M1 selected as the analytical values and corresponding thereto are identified as the incremental steps i _wcX and i _wcY with the smallest first difference.
Furthermore, the soundness judging unit ₂₅ determines the analytical values eE _wcX (i, _k ), calculate the sum eE _obs (k) of eE _wcY (i, k), use this as the estimated value eE _obs (k) of the energy absorption amount of each member, and compare it with the damage determination threshold to calculate the degree of damage do.

(Third modification of the embodiment)
Furthermore, in the case where it is known in advance that the total collapse is dominant over the layer collapse due to the structure of the building, the building soundness evaluation system 1 operates only for the total collapse model M2. It may be configured as
In this case, the analysis unit 21 performs static incremental analysis on the total collapse model M2 in which parameters are set so that the building 10 totally collapses with respect to the three-dimensional frame model M (M2), At each incremental step, the analytical values sE _osX (i, j), sE _osY (i, j) of the energy absorption of each layer and the analytical values eE _osX (i, k), eE _osY ( i, k) are calculated and recorded in the analysis result recording unit 27 .
Next, the energy absorption estimation unit 23 calculates the estimated values sE _obsX (j) and sE _obsY (j) of the energy absorption in each layer 11 in the same manner as in the above embodiment.
Then, the incremental step identification unit 24 calculates the analytical values sE _osX (i, j) and sE _osY (i, j) of the energy absorption amounts of the layers in the total collapse model M2 recorded in the analysis result recording unit 27. For each layer, the analytical values sE _osX (i, j) and sE _osY (i, j) of the energy absorption of each layer in the global collapse model M2 and the estimated value sE _obsX of the energy absorption of each layer (j), the difference from sE _obsY (j) is calculated, and the analytical value of the energy absorption that minimizes the sum of the differences e _X and e _Y in all layers is determined as the minimum difference in the energy absorption of each layer. The incremental steps i _osX and i _osY in the total collapse model M2 selected as the analysis values and corresponding thereto are identified as the incremental steps i _osX and i _osY with the smallest second difference.
Furthermore, the soundness judging unit 25 determines, for each _member , the analytical value eE _osX (i, _k ), calculate the sum eE _obs (k) of eE _osY (i, k), use this as the estimated value eE _obs (k) of the energy absorption amount of each member, and compare it with the damage determination threshold to calculate the degree of damage do.

Thus, in the above embodiment, a static incremental analysis was performed using multiple models M1, M2 and having analytical values in multiple directions X, Y for each of the multiple models. However, static incremental analysis may be performed so as to have two analysis values as shown as the first to third modifications above. Alternatively, for example, by combining the first modification and the second modification, for example, a static incremental analysis may be performed for only one direction of the layer collapse model so as to have a total of one analysis value. , by combining the first and third variations, the static incremental analysis may be performed with a total of one analysis value for only one direction of the global collapse model.
In addition to this, it is possible to select the configurations mentioned in each of the above-described embodiments and modifications, or to change them to other configurations as appropriate without departing from the gist of the present invention.

1 soundness evaluation system 22 earthquake information recording unit 10 building 23 energy absorption estimation unit 11 layer 24 incremental step identification unit 12 sensor 25 soundness determination unit 16 column 27 analysis result recording unit 17 beam M three-dimensional frame model 19 panel M1 Layer Collapse Model 21 Analysis Part M2 Overall Collapse Model

Claims (3)

A soundness evaluation system for diagnosing and evaluating the soundness of a building,
Static incremental analysis is performed in advance using a three-dimensional frame model configured to correspond to the building including columns and beams, and the energy of each layer is calculated at each incremental step, which is the step of increasing the load in the analysis. an analysis unit that calculates an analysis value of an absorption amount and an analysis value of an energy absorption amount of each member including the pillar and the beam, and records the analysis result in an analysis result recording unit;
an earthquake information recording unit that records earthquake information obtained from a sensor installed in the building;
Energy absorption of calculating a story shear force and a story displacement of each story based on the earthquake information and the weight of each story of the building, and calculating an estimated value of the energy absorption amount of each story based on the story shear force and the story displacement. a quantity estimator;
Among the analyzed values of the energy absorption amount of each layer recorded in the analysis result recording unit, the minimum difference analysis value of the energy absorption amount of each layer that minimizes the difference from the estimated value of the energy absorption amount of each layer. an incremental step identifier that selects and identifies the corresponding incremental step as the incremental step with the smallest difference;
An estimated value of the energy absorption amount of each member is obtained from the analytical value of the energy absorption amount of each member corresponding to the incremental step with the minimum difference, and the estimated value of the energy absorption amount of each member and the a soundness determination unit that calculates the degree of damage by comparing with a damage determination threshold set for each member, and determines the soundness of the building based on the degree of damage of each member;
A building soundness evaluation system comprising: The analysis unit includes a layer collapse model in which parameters are set so that the building collapses in layers for the three-dimensional frame model, and a parameter for the three-dimensional frame model in which parameters are set so that the building totally collapses. Static incremental analysis is performed for each of the total collapse type models, and for each incremental step, the analytical value of the energy absorption amount of each layer and the analytical value of the energy absorption amount of each member are calculated. Record in the analysis result recording unit,
The identification unit of the incremental step stores the analysis value of the energy absorption amount of each layer in the layer collapse model and the analysis value of the energy absorption amount of each layer in the global collapse model recorded in the analysis result recording unit. For each combination, for each layer, the sum of the analytical value of the energy absorption amount of each layer in the layer collapse model and the analytical value of the energy absorption amount of each layer in the global collapse model, and the energy of each layer Calculate the difference from the estimated value of the absorption amount, select the minimum difference combination that is the combination that minimizes the sum of the differences in all layers, as the minimum difference analysis value of the energy absorption amount of each layer, The incremental step in the layer collapse type model corresponding to the analytical value of the energy absorption amount of each layer in the layer collapse type model and the analytical value of the energy absorption amount of each layer in the total collapse type model in the minimum difference combination. and identifying the incremental steps in the total collapse model as the incremental step of the first difference minimum and the incremental step of the second difference minimum, respectively;
2. The building according to claim 1, wherein the soundness judging unit judges the soundness of the building based on the incremental step of the first difference minimum and the incremental step of the second difference minimum. Health rating system. For each member, the soundness judging unit determines the analysis value of the energy absorption amount of each member in the layer collapse model corresponding to the incremental step of the minimum first difference and the incremental step of the minimum second difference. Calculate the sum of the corresponding analytical values of the energy absorption amount of each member in the total collapse model, and compare this as an estimated value of the energy absorption amount of each member with the damage determination threshold to determine the damage 3. The building soundness evaluation system according to claim 2, wherein the degree is calculated.

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