KR101935558B1 - System and method for earthquake damage prediction and analysis of structures, and a recording medium having computer readable program for executing the method - Google Patents

Abstract

A system for predicting and analyzing an earthquake damage to a building comprises: a design analysis model construction unit; a measurement dynamic characteristic information acquisition unit; a behavior model construction unit; an earthquake scenario determination unit; a response database construction unit; and a risk analysis information calculation unit. The design analysis model construction unit constructs a design analysis model of a building from design information of the building, the measurement dynamic characteristic information acquisition unit acquires measurement dynamic characteristic (natural frequency, etc.) information of the building from measurement information of the building, the behavior model construction unit modifies the design analysis model of the building according to the measurement dynamic characteristic information to construct a behavior model of the building, the earthquake scenario determination unit determines an occurrence possible earthquake scenario in a target area of the building, the response database construction unit applies the earthquake scenario to the behavior model of the building to construct a response database of the building, and the risk analysis information calculation unit selects an earthquake scenario having the smallest error with measurement data measured among the response database constructed before occurrence of earthquake by using, as a true value (reference), data measured in real-time when earthquake occurs within 5 to 10 minutes after occurrence of earthquake, and calculates earthquake damage prediction and analysis information of the response database corresponding to the earthquake scenario.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a system and method for predicting and analyzing earthquake damage of a building, and a recording medium storing a computer readable program for executing the method. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

The present invention relates to a system and a method for analyzing a disaster risk such as a damage prediction of a building earthquake based on a predicted earthquake scenario that may occur before an earthquake. More particularly, the present invention relates to a system and a method for analyzing an earthquake risk .

In general, the earthquake damage countermeasures in buildings are reflected in advance through the design of buildings such as seismic design, and the analysis of earthquake damage on the completed buildings shows a simple comparison of the scale of earthquake occurrence and the scale of earthquake damage, Post-test, and so on.

A simple comparison between the magnitude of the earthquake generated and the magnitude of the seismic design is based on the assumption that the buildings at the design phase and the actual buildings completed have different characteristics (natural frequency, etc.) due to the effects of building stiffness, load load, Therefore, there is a high uncertainty about the analysis of earthquake damage.

In addition, the visual inspection performed for minor damage is inadequate in comparison with the quantitative numerical and theoretical analysis methods, and has limitations such as the inability to perform a visual inspection due to ceiling or finishing material in a building during actual field inspection.

In the case of serious cracks, it is impossible to use the building for a long period of inspection even though it is possible to perform a scientific analysis of the special inspection (post inspection) performed by the expert.

KR 1020100047697 A

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a system capable of accurately and quickly estimating and analyzing earthquake damage by reflecting both the design stage, And a method thereof.

In order to achieve the above object, a building earthquake damage prediction and analysis system according to the present invention includes a design analysis model building unit, a measurement dynamics information acquisition unit, a behavior model building unit, an earthquake scenario determination unit, a response database building unit, .

The design analysis model construction unit constructs a design analysis model of the building from the design information of the building, and the measurement dynamic characteristics information acquisition unit acquires the measurement dynamic characteristics (natural frequency, etc.) information of the building from the measurement information of the building. , The earthquake scenario decision section determines the earthquake scenario that can occur in the target area of the building, and the response database building section applies the earthquake scenario to the behavior model of the building The response analysis database of the building is constructed. The risk analysis information calculation unit calculates the real time measured data at the time of earthquake within 5 ~ 10 minutes after the earthquake, Select fewer seismic scenarios, and Calculate the damage prediction and analysis of the seismic response database corresponding to the earthquake scenario.

According to such a configuration, a new analysis model (behavior model) reflecting both the characteristics of the actual building and the measurement data of the field dynamics during construction or completion is constructed in the design model of the building, and the analysis results corresponding to the earthquake scenario of the target area It is possible to provide prediction and analysis of earthquake damage accurately and quickly with real-time measured data at the time of occurrence of an earthquake within 5 to 10 minutes after the occurrence of the earthquake by storing it before occurrence of the earthquake in advance.

At this time, the earthquake risk analysis information may include at least one of the risk, usability, and damage location of the building. According to such a configuration, it is not necessary to purchase a separate after-inspection or analysis system to analyze the damage of the building after the earthquake, and it is possible to save a long time and cost for damage analysis.

In addition, the earthquake risk analysis information may include manual information of one or more of evacuation, reuse, and reentering the user. According to such a configuration, it is possible to provide an optimum response manual promptly according to the earthquake occurrence sun or the behavior of the building, thereby minimizing the fear of life injury and economic loss.

In addition, the risk analysis information calculation unit may include a deformed shape estimating unit that estimates a deformed shape of the building using data measured in real time at the time of an earthquake.

In addition, the invention in which the system is implemented in the form of a method and a medium in which a computer-readable program for executing the method are recorded are also disclosed.

According to the present invention, a new analysis model (behavior model) reflecting both the characteristics of the actual building completed and completed and the measurement data of the site dynamics is built in the design model of the building, and the analysis results corresponding to the earthquake scenario By storing the data before the occurrence of the earthquake, it is possible to provide prediction and analysis of the earthquake damage accurately and quickly with the real-time measured data as the reference value within 5 to 10 minutes after the occurrence of the earthquake.

In addition, it is not necessary to purchase a separate after-inspection or analysis system to analyze the damage of the building after the earthquake, and it is possible to save a long time and cost for damage analysis.

In addition, it is possible to provide the optimum response manual promptly according to the earthquake occurrence sun or the behavior of the building, thereby minimizing the fear of loss of life and economic loss.

1 is a schematic block diagram of an earthquake damage prediction and analysis system according to an embodiment of the present invention;
2 is a view schematically showing a process of constructing a behavior model performed in the behavior model building unit of FIG.
FIG. 3 is a table showing an example of elements of a building design analysis model reflected for constructing a behavior model; FIG.
4 is a view schematically showing a process of estimating a deformed shape of a building performed by the deformed shape estimating unit of FIG.
FIG. 5 is a schematic flow chart of a method for estimating and analyzing earthquake damage of a building according to an embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of a building earthquake damage prediction and analysis system according to an embodiment of the present invention. 1, a building earthquake damage prediction and analysis system 100 includes a design analysis model construction unit 110, a measurement dynamics information acquisition unit 120, a behavior model construction unit 130, an earthquake scenario determination unit 140, A database construction unit 150 and a risk analysis information calculation unit 160. The risk analysis information calculation unit 160 further includes a deformed shape estimating unit 162. [

At this time, each element of the earthquake damage prediction and analysis system 100 of the building can be implemented by hardware alone, but it is more common to implement the system together with hardware and hardware-based software.

The design analysis model building unit 110 constructs a design analysis model of the building from the design information of the building. For this purpose, design modeling can be performed using general commercial linear analysis SW (MIDAS GEN, etc.), and dynamic characteristics such as natural period of design model are analyzed.

The measurement dynamics information obtaining unit 120 obtains the measurement dynamic characteristic (natural frequency, etc.) information of the building from the measurement information of the building. The measurement result is different from the analytical result of the design analysis model due to the building rigidity, load load, masonry wall and unstructured influences such as the natural frequency of the actual building completed or completed.

More specifically, the design analysis model and the actual structure of the building (circle) are different from each other because the material strength, the material elasticity coefficient, the building rigidity and the load are different from each other (due to slab, (Floor) acceleration by using an accelerometer and converting the measured acceleration into the frequency domain through FFT (Fourier transform) to compare the dynamic characteristics of the actual building Analyzes the eigenfrequency of each mode and obtains the deformed shape for each mode.

The behavior model building unit 130 constructs a behavior model of the building by modifying the design analysis model of the building in accordance with the measurement dynamic characteristics information. Modification of the stiffness, weight and damping of the design model to construct a behavior model that is the same as the measurement dynamic characteristics of the actual construction completed or completed. It is intended to modify the member dimensions, material characteristics, site conditions, load, masonry walls and nonstructural influences. do. FIG. 2 is a diagram schematically illustrating a process of constructing a behavior model performed by the behavior model building unit of FIG. 1. FIG.

More specifically, it is assumed that the dynamic analysis results of the actual building are assumed to be true values, and the mass, stiffness, damping, boundary conditions, material strength and elastic modulus of the building design analysis model are adjusted, and slab MESH analysis, And the stiffness contribution of nonstructural effects are applied to each contribution priority in order to derive analytical dynamic characteristics (natural frequency, etc.) at the same level or similar level as the analysis result of actual building dynamic characteristics.

The architecture analysis model thus derived is a behavior model, and this series of processes is called a behavior model establishment or synchronization process. FIG. 3 is a table showing an example of elements of a building design analysis model reflected for constructing a behavior model.

The earthquake scenario determining unit 140 determines a possible earthquake scenario in the target area of the building. For this purpose, probable seismic scenarios (M-R, scale-distance, maximum, minimum, and worst conditions) can be provided in the target area through Probabilistic Seismic Hazard Analysis (PSHA).

More specifically, probabilistic Seismic Hazard Analysis (PSHA) is applied to the Seismic Hazard Map based on the earthquake list (history, instrument), data on the fault list, (MR, scale-distance, etc.) information to the target area through the earthquake.

The response database construction unit 150 constructs a response database of the building by applying the earthquake scenario to the behavior model of the building. At this time, the response database may consist of a behavior database and a management database.

To do this, nonlinear precision analysis is performed on seismic scenarios by using nonlinear analysis SW (Perform 3D, etc.) for general commercial purposes to construct response DB data of response DB. At this time, the behavior DB data may include all member analysis values such as dynamic characteristics of the behavior model, hysteresis curve of members, and interlayer displacement. The behavior DB is a result of the above analysis. The management DB is a numerical value of the behavior DB according to the management standard. The DB includes a vertical member resistance (DCR), a damage index per layer or zone, And may include building collapse (breakdown) probability analysis information.

In other words, nonlinear precision analysis (dynamic characteristics of the behavior model, hysteresis curve of the member, and member nonlinearity) of the behavioral model is calculated by assuming the possible earthquake scenario (load input value) (DCR), layer and zone damage indexes, interlayer displacements, maximum displacements, and analysis of the probability of collapse of buildings (failure). Building a management DB that analyzes the analysis results (behavior DB) by structural safety criteria, and constructs a response DB composed of behavior DB + management DB.

The risk analysis information calculation unit 160 calculates the measurement data of the response database constructed before the earthquake with the real-time measured data at the time of occurrence of the earthquake within 5 to 10 minutes after the occurrence of the earthquake and the earthquake scenario with the smallest error And the earthquake damage prediction and analysis information of the response database corresponding to the earthquake scenario is calculated. It is necessary to install the instrument on actual construction completed or completed, and to collect and analyze the measurement data on the server computer.

More specifically, using the measurement data of the first-story or underground PGA measurement value and a small amount of displacement, inclination, etc. through the earthquake acceleration meter, the first case is selected as the case corresponding to the measurement PGA of the response DB, and the measurement displacement, Of the total structure using the latest techniques related to displacement, mode shape, and strain rate, using a small amount of measurement data after matching the measured data with the case of a small deviation and using a small amount of measurement data And then select the case of the preliminary earthquake damage response DB which is the most reasonable by the third selection process.

At this time, the load (external force) acting on the building can be measured by using a seismometer (seismic accelerometer), wind direction / wind velocity / wind pressure meter, and the response of the building behavior by the load (external force) It can be measured using a displacement gauge (GPS, etc.). The safety response of the main structural member due to the deformation behavior of the building can be measured by using the axial stress and strain meter.

The measurement data can be analyzed after collecting the measurement data by binarizing the measurement environment at the time of occurrence of the normal environment and earthquake, and the measurement data at the time of the normal environment can be used for detecting an abnormal sensor (measurement value) Measurement data at the time of earthquake can be used for risk detection, risk judgment, and selection of the trigger level according to the risk level.

The deformed shape estimating unit 162 estimates the deformed shape of the building using the behavior response measurement data. Based on a small amount of measurement data (instrument installation and measurement), it is possible to apply the latest techniques of related academic fields such as displacement based, mode based, and strain based. FIG. 4 is a schematic view illustrating a process of estimating a deformed shape of a building performed by the deformed shape estimating unit of FIG. 1. Referring to FIG.

The risk analysis information calculation unit 160 can calculate the earthquake risk analysis information in connection with the response DB results using the measurement (information collection) information and the deformed shape estimation result of the seismometer. In other words, earthquake damage prediction and analysis results can be calculated through measurement data, deformation shape, and response DB connection in case of earthquake.

The earthquake risk analysis information at this time may include information on one or more of the risk, usability, and damage location of the building. That is, the prediction and analysis results of earthquake damage can be calculated in the form of visualization of damage location based on the probability of building collapse (destruction), behavior DB, risk based on management DB results, and usability.

In addition, the earthquake risk analysis information may include manual information of one or more of evacuation, reuse, and reentering the user. For example, such manual information can be calculated in conjunction with earthquake damage prediction and analysis results (numerical value, etc.) within 5 to 10 minutes after the earthquake.

5 is a schematic flowchart of a method for predicting and analyzing earthquake damage of a building according to an embodiment of the present invention. In Figure 5, the Earthquake Damage Prediction and Analysis System of Structures (EDPASS) consists of two stages: a preliminary stage (1 stage) and an EDPASS operation stage (2 stage).

The preliminary stage (Step 1) for implementing the EDPASS function is an essential element for the EDPASS operation phase. It consists of six detailed processes including the first analysis, dynamic characteristics measurement, behavior model construction, seismic scenario determination, second analysis, .

The response DB construction is the final output (output) of the preliminary stage (stage 1) for implementing the EDPASS function, and the behavior model, the earthquake scenario, the latest technology and analysis method of related academy are the input condition (input) (Numerical value, etc.) are linked and reflected.

The EDPASS operation phase (stage 2) is the stage of estimating and analyzing earthquake damage by using measurement data and one step response DB at the occurrence of an earthquake using the SW installed in the computer such as a server computer. DB connection, earthquake damage prediction and analysis, and evacuation and reuse (moving) judgment.

The results of earthquake damage prediction and analysis are the final output (output) of the EDPASS operation phase (stage 2). In case of earthquake, the measurement data is input condition (input) .

Accuracy of prediction and analysis of earthquake damage depends on deformation shape estimation and response DB connection technique within 1 step response DB result, and evacuation, building reuse and re - occupancy judgment are estimation of earthquake damage and utilization of analysis result (output). (Safety), reuse, and re-occupancy of the building in 5 to 10 minutes after the earthquake can be judged by estimating earthquake damage It is linked with the analysis result (numerical value) result.

To summarize, the present invention presents a system and method for predicting and analyzing earthquake damage using measurement data of actual buildings completed in Korea and overseas for the purpose of simple comparison of earthquake scale or overcoming limitations of visual inspection. According to the present invention, it is possible to predict and analyze earthquake damage at the level of precision inspection expertise (reuse of buildings and judgment on whether or not a tenant is re-entered) by linking real-time measurement data with an answer DB after constructing an earthquake damage response DB It becomes possible.

More specifically, the dynamic characteristics (natural frequency, etc.) of actual buildings completed or completed during construction are reflected in the seismic design model by reflecting the SHM (Structure Health Monitoring) technique and technology. (Analysis, analysis, prediction, and evaluation) of the earthquake damage response DB (analysis, analysis, prediction and evaluation) were made, and real-time measurement data Value) and response DB linkage, it will be possible to provide judgment data such as the soundness, use and re-occupancy of the building based on the data of the expert inspection level.

Although the present invention has been described in terms of some preferred embodiments, the scope of the present invention should not be limited thereby but should be modified and improved in accordance with the above-described embodiments.

100: Earthquake Damage Estimation and Analysis System
110: Design analysis model building section
120: Measurement dynamic characteristic information acquisition unit
130: Behavior model building part
140: Seismic scenario determination unit
150: response database construction unit
160: Risk analysis information calculating section
162:

Claims (13)

A design analysis model building unit for constructing a design analysis model of the building from design information of the building;
A measurement dynamic characteristic information acquisition unit for acquiring measurement dynamic characteristic information of the building from the measurement information of the building;
A behavior model building unit for modifying a design analysis model of the building according to the measurement dynamic characteristic information to construct a behavior model of the building;
An earthquake scenario determining unit for determining an earthquake scenario that can occur in a target area of the building;
A response database construction unit for applying the earthquake scenario to a behavior model of the building to construct a response database of the building; And
The earthquake damage data corresponding to the earthquake scenario corresponding to the earthquake scenario with the smallest error and the measurement data among the response data base constructed before the earthquake based on the external force measurement data acting on the building when the earthquake occurs and the behavior response measurement data of the building due to the external force And a risk analysis information calculation unit that calculates predetermined earthquake risk analysis information including prediction and analysis information.
The method according to claim 1,
Wherein the earthquake hazard analysis information includes at least one of the risk, usability, and damage location of the building.
The method according to claim 1,
Wherein the earthquake hazard analysis information includes one or more manual information of the evacuation, reuse, and reentering of the user.
The method according to claim 1,
Wherein the response database includes an analysis result of the building by an external force by an earthquake scenario acting on the building and an earthquake risk analysis information data analyzed on the basis of the interpretation result.
delete The method according to claim 1,
Wherein the risk analysis information calculation unit includes a deformed shape estimating unit that estimates a deformed shape of the building using the behavior response measurement data.
The earthquake damage prediction and analysis system of buildings,
A design analysis model building step of building a design analysis model of the building from the design information of the building;
A measurement dynamic characteristic information acquisition step of acquiring measurement dynamic characteristic information of the building from the measurement information of the building;
A behavior model building step of constructing a behavior model of the building by modifying a design analysis model of the building according to the measurement dynamic characteristic information;
An earthquake scenario determination step of determining an earthquake scenario that can occur in a target area of the building;
Constructing a response database of the building by applying the earthquake scenario to a behavior model of the building; And
The earthquake damage data corresponding to the earthquake scenario corresponding to the earthquake scenario with the smallest error and the measurement data among the response data base constructed before the earthquake based on the external force measurement data acting on the building when the earthquake occurs and the behavior response measurement data of the building due to the external force And a risk analysis information calculating step of calculating pre-set earthquake risk analysis information including prediction and analysis information.
The method of claim 7,
Wherein the earthquake hazard analysis information includes at least one of the risk, usability, and damage location of the building.
The method of claim 7,
Wherein the earthquake risk analysis information includes manual information of at least one of evacuation, reuse and re-entry of the user.
The method of claim 7,
Wherein the response database includes analysis results of the building by an external force according to an earthquake scenario acting on the building and earthquake risk analysis information data analyzed based thereon.
delete The method of claim 7,
Wherein the risk analysis information calculating step includes a deformed shape estimating step of estimating a deformed shape of the building using the behavior response measurement data.
A recording medium on which a computer-readable program for executing the method of any one of claims 7, 8, 9, 10 and 12 is recorded.

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