JP2006064483A - Inspection support method and inspection support system for building struck by earthquake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection support method and an inspection support system for buildings struck by an earthquake capable of rationally specifying an inspection work requiring part of a building struck by the earthquake. <P>SOLUTION: By using an arithmetic unit, a vibrational response analytic model for a monitoring object building is formed based on structural data of the monitoring object building and ground data of the monitoring object building, and a seismograph which observes an earthquake acting on the monitoring object building and outputs an observed value to the arithmetic unit, is provided. Then, the arithmetic unit compares and detects whether the observed value inputted from the seismograph is not lower than a preset set value, which is presumed to require inspection work. Then, the arithmetic unit performs a vibrational response analytic of the monitoring object building, with respect to the vibration response analytic model for the monitoring object building by the use of the observed value, when the observed value is not lower than the set value. After that, the arithmetic unit specifies a part which is presumed to be relatively heavily damaged as an inspection requiring part, out of each part of the monitoring object building, from the vibration response analytic result. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inspection support method and an inspection support system for an earthquake-affected building that can reasonably specify a site that requires an inspection operation for an earthquake-affected building.

  When a building suffers an earthquake, an inspection of the damage status of the building is performed on site to confirm whether or not repairs are necessary. It is not easy to carry out this inspection work for all buildings, and it is efficient if the necessity of this inspection work can be easily determined for each building. For example, in Patent Document 1, an earthquake monitoring device installed in a building includes a seismometer, the seismometer detects the occurrence of an earthquake and calculates a seismic intensity, and the seismic monitoring device has a calculated seismic intensity greater than or equal to a predetermined value. In some cases, it is disclosed that a microcomputer is provided to notify the mobile phone of the seismic intensity, and by using this, it is possible to obtain information on earthquakes that acted on each building, and check based on the earthquake information It is possible to distinguish between buildings that require work and buildings that do not.

In addition, if it is possible to know the damage status of the building, it is convenient to be able to devise an inspection work plan according to it, and for example, Patent Document 2 predicts the damage rate and damage amount for an existing building earthquake. Enter the structural seismic index, which is the seismic diagnosis result for the structure of the building to be evaluated, and use the failure probability calculation condition calculated from damage data of earthquakes that occurred in the past based on the input structural seismic index. The failure probability is calculated according to the earthquake input level, and the damage is predicted for the building to be evaluated based on the calculated failure probability, that is, the building is calculated from the structural earthquake resistance index based on the data analysis of the past earthquake damage results. It is also possible to use this damage prediction to estimate the damage status of the building itself.
JP 2003-294849 A JP 2003-132296 A

  By the way, even if the earthquake information acquired for each building and the calculated damage prediction can be used to identify the building that needs to be inspected and the damage situation can be predicted, the following problems will still arise. there were. In other words, in the inspection work on the damage status of buildings, specifically, it is necessary to identify and identify individual damaged parts, such as what kind of parts are damaged with respect to the entire building that has suffered an earthquake. There is a problem that it is necessary to specify to what extent each damaged part is damaged, for example, by measuring the degree of damage, which requires a lot of labor and time.

  In particular, damage to buildings caused by earthquakes has a close causal relationship with the vibration response characteristics of buildings. Depending on what periodic characteristics and what kind of energy seismic waves act on the buildings, the damage site and damage level differ, Therefore, even using past earthquake data, it is difficult to accurately estimate these damaged parts and extent of damage. For this reason, even if building identification and damage prediction are possible as described above, Inspection work could not be reduced.

  The present invention was devised in view of the above-described conventional problems, and for earthquake-damaged buildings, it is possible to rationally specify parts that require inspection work. An object is to provide a method and an inspection support system.

  An inspection support method for a building subjected to an earthquake according to the present invention is based on the structure data of the monitored building constructed from the member data of various components constituting the monitored building and the ground data of the monitored building. While creating a monitoring target building vibration response analysis model using a device, a seismometer is provided for observing an earthquake acting on the monitored building and outputting the observed value to the arithmetic device. The observation value input from the seismometer is compared with a preset set value that is estimated to require inspection work, and then the calculation device has the observed value equal to or greater than the set value. In such a case, the observed response is used for the monitored building vibration response analysis model, and the vibration response analysis of the monitored building is executed. , Of each portion of the monitoring target building, characterized thereby identified as inspections required site area to be estimated relatively damage is large.

  The computing device is characterized in that the site requiring inspection is specified by ranking according to the estimated magnitude of damage.

  The arithmetic unit is characterized in that the inspection-required parts are identified by a preset number from the larger estimated damage.

  The arithmetic unit is characterized in that a part that is estimated to be damaged more than a preset damage setting value is specified as the inspection-required part.

  Regarding the deformation of the reinforced concrete member, the arithmetic device includes a deformation amount θ1 at the time of yielding of the component member calculated in advance from the member data, and an actual deformation amount θ2 of the component member obtained from the vibration response analysis result. The damage set value is set with respect to the ratio (θ2 / θ1).

  In the arithmetic unit, the damage set value is set with respect to the deformation amount of the component member that is preliminarily calculated from the member data and has a crack that needs repair, with respect to the crack of the reinforced concrete member. And

  An inspection support system for a building that has suffered an earthquake according to the present invention includes a seismometer that observes an earthquake acting on a monitored building and outputs an observation value, and a variety of devices that are connected to the seismometer and constitute the monitored building. Based on the structural data of the monitoring target building constructed from the component data of the constituent members and the ground data of the monitoring target building, it is used to create a monitoring target building vibration response analysis model, while being input from the seismometer It is compared whether or not the observed value is greater than or equal to a preset set value estimated to require inspection work. If the observed value is greater than or equal to the set value, the observed response to the monitored building vibration response analysis model is compared. Using the value, the vibration response analysis of the monitoring target building is executed, and from the vibration response analysis result, a part estimated to be relatively damaged among the parts of the monitoring target building Characterized in that a constant computing device.

  The seismometer is provided for each of the plurality of monitored buildings, and the arithmetic unit is installed in a central monitoring center, and is used to create the monitored building vibration response analysis model of each monitored building, The observed value input from the seismometer is compared with the set value of each monitored building, and the vibration response analysis of each monitored building whose observed value is equal to or greater than the set value is executed to each monitored building The inspection-required part is specified.

  In the inspection support method and the inspection support system for a building that has suffered an earthquake according to the present invention, it is possible to rationally specify a part that needs to be inspected for a building that has suffered an earthquake, and to appropriately perform the inspection work. Can help.

  Hereinafter, a preferred embodiment of an inspection support method and an inspection support system for a building subjected to an earthquake according to the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, an inspection support system for a building that has suffered an earthquake according to the present embodiment basically includes a seismometer 2 that observes an earthquake acting on a monitored building 1 and outputs an observed value, and an earthquake Based on the structural data of the monitoring target building 1 and the ground data of the monitoring target building 1 that are connected to the total 2 and constructed from the member data of various components constituting the monitoring target building 1 On the other hand, the observation value input from the seismometer 2 is compared with a preset set value that is estimated to require inspection work. If the observed value is greater than the set value, monitoring is performed. Using the observed values for the target building vibration response analysis model, the vibration response analysis of the monitored building 1 is executed, and it is estimated from the vibration response analysis results that each part of the monitored building 1 is relatively damaged. The part to be It constructed an arithmetic unit 3 for identifying a test requiring portion r.

  When the inspection support system is configured for a plurality of monitored buildings 1, the seismometer 2 is provided for each of the plurality of monitored buildings 1, and the arithmetic device 3 is installed in the central monitoring center 4, It is used to create a monitored building vibration response analysis model for each monitored building 1 and compares the observed value input from each seismometer 2 with the set value of each monitored building 1, and the observed value is greater than or equal to the set value The vibration response analysis of each monitoring target building 1 is executed, and the inspection required part r is specified for each monitoring target building 1.

  Various kinds of buildings 1 to be monitored are usually composed of various constituent members such as columns, beams, floors, and walls. The strength and the like of these constituent members are calculated from member data including specifications such as length dimensions and cross-sectional dimensions, materials, and structures. And the structural data of the monitoring object building 1 is constructed | assembled by specifying the attachment position etc. of each structural member in the monitoring object building 1 with respect to each such member data. If this structural data is read into a structural calculation program or a vibration response analysis program, which will be described later, by inputting appropriate external force data as is generally known, any part of the building 1 to be monitored, concretely For each of the constituent members, the stress value and the deformation value that can be generated by the applied external force are calculated. On the other hand, the ground data of the monitoring target building 1 is acquired by a boring survey or the like.

  On the other hand, the seismometer 2 observes the earthquake actually acting on the monitored building 1 and outputs the observed value, so that the ground on which the monitored building 1 is constructed and, if necessary, the monitored building 1 is installed. The observed values are composed of various data relating to the intensity of the earthquake, such as the earthquake waveform, acceleration, and seismic intensity. The seismometer 2 is connected to a computing device 3 installed in a central monitoring center 4 provided at a location remote from the monitored building 1 via a wired or wireless communication line network. The observation value is input from 2.

  The arithmetic device 3 is provided with an input / output device having a general configuration such as a keyboard, a monitor, and a printer, and is also equipped with a known vibration response analysis program and other various programs. The arithmetic device 3 has a function of reading the structural data and ground data of the monitoring target building 1 input from the input device into a vibration response analysis program, thereby creating a vibration response analysis model of the monitoring target building 1.

  The arithmetic device 3 has a function of comparing whether or not the observation value input from the seismometer 2 is equal to or higher than a preset set value estimated to require inspection work. Explaining the set values, the vibration response analysis described later may be executed for all the earthquakes that occurred. However, since such handling is inefficient, the monitored building 1 is considerably damaged. The set value is set in order to execute the vibration response analysis only for an earthquake that is likely to require inspection work. This set value is set in the arithmetic unit 3 so that it can be compared with the seismic data input from the seismometer 2, for example, seismic intensity and acceleration, and can be changed arbitrarily.

  Further, the arithmetic device 3 executes the vibration response analysis of the monitored building 1 with respect to the monitored building vibration response analysis model by the vibration response analysis program using the observed value of the earthquake observed by the seismometer 2, It has a function of calculating the vibration response analysis result and outputting it if necessary. The vibration response analysis result is composed of deformation amounts and stress values calculated for various components in which every part of the monitoring target building 1, that is, the mounting position in the monitoring target building 1 is specified.

  Generally, a building constitutes a unique vibration system. When different seismic waves are input as shown in FIG. 2, different response accelerations are observed and different response interlayer displacements are observed. Specifically, each constituent member shows a different stress value. Therefore, it is inappropriate to calculate the stress value for accurately estimating the damaged part and damage level of the monitored building 1 to be inspected based on past earthquake data and pseudo earthquake data. In the present embodiment, the actual observation value of the seismometer 2 that observed the earthquake acting on the monitored building 1 is used, and the observed vibration value analysis model is used for the monitored building vibration response analysis model. Then, vibration response analysis is executed to calculate the stress value of each part of the monitoring target building 1.

  In addition, various component members have different load-deformation curves as shown in FIG. 3 depending on the specifications such as length and cross-sectional dimensions, material, structure, and mounting position. Yield load is different. In the present embodiment, in consideration of such circumstances, the vibration response analysis model is created based on the structure data constructed by the member data of various constituent members constituting the monitoring target building 1, Vibration response analysis is performed on the vibration response analysis model to calculate the stress value of each part of the monitored building 1. Further, the arithmetic device 3 compares the calculated stress values one by one, and among the parts of the monitored building 1, the parts having the large calculated stress values are estimated to be relatively damaged. It has a function of extracting as a part, specifying the part as the inspection required part r, and outputting it to the output device.

  As described above, due to the characteristics of individual seismic waves, the characteristics of individual structural members such as dimensions and materials, and their mounting positions, the stress state of each part of the monitored building 1 will be different when different earthquakes act. As shown in FIG. 4, the order of occurrence of yield hinges where damages such as cracks and yielding of reinforcing bars are found (for example, 1 → 10 in the figure) where damage is estimated to be relatively large. In other words, the part where the stress value where the yield hinge first occurs is large and the part where the stress value where the yield hinge occurs after that are small are grasped from the magnitude of the stress value of the vibration response analysis result.

  In the illustrated example, the part that is estimated to be relatively damaged is the vicinity of the joint between the second pillar from the right and the first-floor beam in the seismic wave A, and the first floor in the seismic wave B. The seismic wave A and the seismic wave B are different. Then, the arithmetic unit 3 specifies, for example, a 1 → 10 portion shown in the figure as a necessary inspection portion r with respect to other portions based on the magnitude of the stress value. That is, the example of illustration is a case where the arithmetic unit 3 specifies the inspection required part r by ranking according to the estimated magnitude of damage. Further, the arithmetic unit 3 sets ten inspection-required parts r as many as a preset number from the larger damage size estimated, for example, as shown in FIG. 4, regardless of the rank order or according to the rank order. It may be specified.

  Further, when the inspection-required part r is specified by the automatic calculation of the arithmetic device 3, a part that is estimated to be larger than a preset damage setting value may be specified as the inspection-required part r. Specifically, as shown in FIG. 5, regarding the deformation of the reinforced concrete member, for each component member, the deformation amount θ1 when the component member yields in advance and calculated from the member data and the vibration response analysis result are obtained. The damage set value is set with respect to the ratio (θ2 / θ1: plasticity factor) to the actual deformation amount θ2 of the component member. The damage to the component is based on the fact that the damage increases as the plasticity ratio increases. For example, the damage set value (plasticity factor) is set to 1.0, and if it is more than that, the arithmetic unit 3 is specified as the inspection required part r.

  Moreover, as shown in FIG. 6, regarding the crack of the reinforced concrete member, the deformation amount that is calculated in advance from the member data and causes a crack that requires repair is set as a damage setting value for each component member. For example, for each component, a deformation amount that causes cracks of 0.3 mm or more is set as a damage setting value, and if the vibration response analysis result shows that the deformation amount is equal to or greater than the damage setting value, the arithmetic device 3 is inspected. The necessary part r is specified.

  For specifying the inspection-required portion r, calculation may be performed by applying different appropriate weights to columns, beams, floors, walls, and the like. For specifying the inspection-required portion r, the designer or the like may correct the calculation execution result by the calculation device 3 with reference to the vibration response analysis result.

  In particular, when a plurality of monitored buildings 1 are targeted, the arithmetic unit 3 receives a plurality of observation values from each seismometer 2 that individually observes earthquakes acting on each monitored building 1. For each monitored building 1, a comparison is made as to whether the observed value is equal to or greater than the set value. In addition, the arithmetic device 3 individually performs a vibration response analysis on the vibration response analysis model created for each monitoring target building 1, and based on that, a specific inspection required part r for each monitoring target building 1 Is identified. Among the monitoring target buildings 1, for the monitoring target building 1 whose observed value is not equal to or higher than the set value, the vibration response analysis by the arithmetic device 3 is not executed, and therefore the necessary inspection site r is not specified.

  The computing device 3 may be one capable of executing all functions, and also has a function for creating a monitoring target building vibration response analysis model, the seismometer 2 being connected, and a set value. A separate arithmetic unit 3 is used for each function, such as a function that is set and executes comparison with the observed value, and a function that performs vibration response analysis using the observed value and identifies the necessary inspection site r. Also good.

  Next, an inspection support method using an inspection support system for a building that has suffered such an earthquake will be described with reference to FIG. First, the building 1 to be monitored is designed (S1). Next, based on the structural data of the monitoring target building 1 and the ground data of the monitoring target building 1 constructed from the member data of the various components constituting the designed monitoring target building 1, the monitoring target building is calculated using the arithmetic device 3. A vibration response analysis model is created (S2). On the other hand, the building 1 to be monitored is built (S3), and a seismometer 2 that observes an earthquake acting on the monitored building 1 in the vicinity of the monitored building 1 and outputs the observation value to the arithmetic unit 3 is provided. Install (S4). Thereafter, the seismometer 2 continuously measures earthquakes (S5), and the observed values are transferred from the seismometer 2 to the central monitoring center 4 in order to input them to the arithmetic unit 3. (S6).

  The arithmetic device 3 of the central monitoring center 4 performs a comparison process to determine whether or not the observation value input from the seismometer 2 is equal to or greater than a set value (S7). When the observed value is smaller than the set value, the process returns to S5 and the earthquake measurement is continued. If the observed value is greater than or equal to the set value, the arithmetic device 3 is caused to execute vibration response analysis of the monitored building 1 using the observed value for the monitored building vibration response analysis model (S8). Next, the processing unit 3 is caused to execute a process of identifying a part that is estimated to be relatively large as a part to be inspected r from each part of the monitored building 1 based on the vibration response analysis result (S9). If the inspection-required part r is specified in this way, an inspection operation is performed to determine whether or not repair is necessary for the monitored building 1 at the site (S10).

  In the inspection support system and the inspection support method for an earthquake-affected building according to the present embodiment described above, the seismometer 2 that outputs the observed value of the actual earthquake that has acted on the monitored building 1, and the monitored building 1 vibration response analysis model is created based on data unique to the monitoring target building 1, that is, structural data constructed from member data of various components constituting the monitoring target building 1 and ground data of the monitoring target building 1. When the vibration response analysis is performed on the monitoring target building vibration response analysis model using the observation value and the damage is relatively large among the parts of the monitoring target building 1 from the vibration response analysis result. And an arithmetic unit 3 that identifies the estimated part as the inspection-required part r, and uses the structural data of the actual monitoring target building 1 from the actual observation value and the damage part and the degree of damage. Since the calculation processing is performed, the damage part and the damage level are specifically estimated at each part level of the monitored building 1, and the part that is estimated to be relatively damaged is rationally specified. Therefore, compared to inspecting the entire monitored building in a state where the damaged part and the degree of damage are unknown, it is only necessary to inspect the specified inspection required part r, thereby reducing the inspection work man-hours. It is possible to appropriately support the inspection work for the building that suffered the earthquake.

  Moreover, since the setting value estimated to require the inspection work is compared with the observed value to control whether or not the vibration response analysis is executed, the arithmetic processing by the arithmetic device 3 can be reduced. Further, in order to specify the inspection-required portion r, the rank is given according to the estimated damage size, the preset number is specified from the larger estimated damage size, or the preset damage setting is set. Since the part estimated to be damaged more than the value is specified, it is possible to prevent the inspection required part r from being increased more than necessary, and the inspection work can be made efficient.

  Since the amount of deformation taking into account the plasticity rate and cracks is used as the damage setting value, it is possible to rationally specify the site r required for inspection. In addition, by installing seismometers 2 corresponding to each monitored building 1 and connecting these seismometers 2 to the arithmetic unit 3, the inspection-required parts r of each monitored building 1 are collectively collected. It is possible to identify and support inspection work.

It is a schematic block diagram which shows suitable one Embodiment of the inspection assistance system of the building which suffered the earthquake concerning this invention. It is explanatory drawing explaining the difference of the response acceleration of a building in case a different seismic wave acts, and a response interlayer displacement. It is explanatory drawing explaining the difference of the load-deformation curve of the structural member of a different property. It is explanatory drawing explaining the state by which the required inspection site | part was specified by the inspection assistance system shown in FIG. It is explanatory drawing explaining the damage setting value set regarding the deformation | transformation of a reinforced concrete member by the inspection assistance system shown in FIG. It is explanatory drawing explaining the damage setting value set regarding the crack of a reinforced concrete member by the inspection assistance system shown in FIG. It is a flowchart figure which shows suitable one Embodiment of the inspection assistance method of the building which suffered the earthquake concerning this invention.

Explanation of symbols

1 Building to be monitored 2 Seismometer 3 Computing device 4 Central monitoring center r Inspection required part

Claims (8)

A monitoring target building vibration response analysis model is created using an arithmetic unit based on the structural data of the monitoring target building and the ground data of the monitoring target building which are constructed from the member data of various components constituting the monitoring target building On the other hand,
Establish a seismometer that observes earthquakes acting on the monitored buildings and outputs the observed values to the arithmetic unit,
Next, the arithmetic unit is made to compare whether or not the observation value input from the seismometer is equal to or higher than a preset set value estimated to require inspection work,
Next, when the observed value is equal to or more than the set value, the arithmetic unit is caused to execute the vibration response analysis of the monitored building using the observed value for the monitored building vibration response analysis model,
Thereafter, the computing device is subjected to an earthquake characterized in that, from the result of the vibration response analysis, among the parts of the monitored building, a part that is estimated to be relatively damaged is identified as a part requiring inspection. Checking method for damaged buildings.   The method according to claim 1, wherein the computing device identifies the site requiring inspection by ranking in accordance with an estimated magnitude of damage.   3. The inspection support for an earthquake-damaged building according to claim 1 or 2, wherein the arithmetic unit specifies the inspection-required part by a preset number from the larger estimated damage magnitude. Method.   The said arithmetic unit specifies the site | part estimated that a damage is larger than the preset damage setting value as said site | part which needs to be inspected, The inspection assistance of the building which received the earthquake of Claim 1 or 2 characterized by the above-mentioned. Method.   Regarding the deformation of the reinforced concrete member, the arithmetic device includes a deformation amount θ1 at the time of yielding of the component member calculated in advance from the member data, and an actual deformation amount θ2 of the component member obtained from the vibration response analysis result. 5. The inspection support method for an earthquake-damaged building according to claim 4, wherein the damage set value is set with respect to the ratio (θ2 / θ1).   In the arithmetic unit, the damage set value is set with respect to the deformation amount of the component member that is preliminarily calculated from the member data and has a crack that needs repair, with respect to the crack of the reinforced concrete member. The inspection support method of the building which received the earthquake of Claim 4 or 5. A seismometer that observes earthquakes acting on monitored buildings and outputs observations;
Based on the structural data of the monitored building and the ground data of the monitored building that are connected to the seismometer and are constructed from the member data of the various components constituting the monitored building, When the observed value input from the seismometer is compared to a preset value that is estimated to require inspection work, and is compared to the preset value. The vibration response analysis of the monitoring target building is executed using the observed value for the monitoring target building vibration response analysis model. An inspection support system for a building that has suffered an earthquake, comprising: an arithmetic unit that identifies a part that is estimated to be highly damaged as a part requiring inspection. The seismometer is provided for each of the plurality of monitored buildings,
The arithmetic unit is installed in a central monitoring center and is used to create the monitored building vibration response analysis model for each monitored building, and the observed value input from each seismometer and the set value for each monitored building The said response required part is identified with respect to each monitoring object building by performing the said vibration response analysis of each monitoring object building whose said observed value is more than this setting value, The said inspection site | part is identified. Inspection support system for buildings that suffered earthquakes.

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