A building component loss analysis method based on seismic damage data

Abstract

The application discloses a building component loss analysis method based on seismic damage data, comprising the following steps: step one, data acquisition; step two, structure classification; step three, parameter selection; step four, loss proportion analysis; step five, damage loss analysis; step six, liquefaction analysis; step seven, comprehensive analysis; compared with the existing building component loss analysis method based on seismic damage data, the building is refined into structural components and non-structural components for analysis, and the influence of seismic liquefaction data on the analysis result is eliminated, so that the analysis result is more accurate, the error is reduced, the damage data is brought into a damage calculation formula for calculation, two specific quantitative data, i.e., component damage ratio and component loss proportion, are obtained, the actual situation of building component loss of seismic damage data is expressed by using the quantitative data as a basis, and the real seismic loss situation is convenient to estimate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of earthquake loss analysis, in particular to a building component loss analysis method based on earthquake damage data. BACKGROUND

[0002] Earthquake loss analysis is to analyze and count the loss of earthquake by using scientific methods, which is of great significance for subsequent disaster prevention and mitigation. The earthquake loss analysis based on actual damage is one of the more effective and direct methods, but in the actual operation process, due to the lack of a large amount of detailed data, the building component loss analysis of earthquake damage data at present is mostly the analysis of group buildings or the whole building, and the analysis result is rough and the error is large. The damage condition is difficult to determine and describe by dividing into fuzzy concepts such as "basically intact", "slight damage", "moderate damage" and "severe damage". At the same time, the analysis lacks the analysis of building component levels, especially the analysis of non-structural component damage, which greatly increases the analysis error. SUMMARY

[0003] The purpose of the present application is to provide a building component loss analysis method based on earthquake damage data to solve the problems in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a building component loss analysis method based on earthquake damage data, comprising the following steps: step one, data collection; step two, structure classification; step three, parameter selection; step four, loss ratio analysis; step five, damage loss analysis; step six, liquefaction analysis; step seven, comprehensive analysis; characterized in that:

[0005] In the above step one, the data of the historical earthquake insurance database of the area to be analyzed is selected as the basis, and the collected information is sorted into a data set for standby use;

[0006] In the above step two, after the data set in step one is sorted, the components of the building in the area to be analyzed are classified, mainly into structural components and non-structural components. After the structure classification is completed, the value of the structural components and the value of the non-structural components are counted respectively;

[0007] In the above step three, after the building component classification in step two is completed, the seismic intensity of the earthquake is selected, which mainly includes peak acceleration and spectral acceleration. Since it is difficult to estimate the natural period of the building that has occurred earthquake, the peak acceleration is selected as the seismic parameter for calculation, and the peak acceleration is calculated by using the attenuation formula to obtain the seismic parameter of the selected area;

[0008] In the above step four, when the ground motion parameters in step three are obtained, the historical structural and non-structural losses in the region are counted, and the counting results are fitted to obtain the empirical formula of structural and non-structural losses.

[0009] In the above step five, after the loss ratio in step four is determined, the damage of the building to be analyzed is analyzed. Since the building components include structural components and non-structural components, they are analyzed respectively. The overall loss of the building components is analyzed by combining the component vulnerability and the component loss ratio. The component vulnerability is the relationship between the ground motion input and the component damage from the engineering point of view, wherein the component damage degree is represented by the component damage ratio. Then, the structural loss and the non-structural loss of the building to be analyzed are calculated respectively by combining the structural loss ratio and the non-structural loss ratio calculated in step four.

[0010] In the above step six, after the structural loss and the non-structural loss of the building to be analyzed in step five are calculated, the loss caused by seismic liquefaction in the region to be analyzed is separately counted and analyzed.

[0011] In the above step seven, the building component loss caused by seismic liquefaction in step six is removed, and the structural damage and the non-structural damage of the building in the region to be analyzed are re-calculated, thereby completing the analysis of the building component loss in the seismic damage data.

[0012] In the above step one, the contents in the data set include: (1) building basic information data set: building height, construction date, site condition, geographic coordinates, construction cost and building number; (2) building damage data set: building component type, loss number, component damage information, site liquefaction information and component repair situation.

[0013] In the above step two, the structural components include: wall frame, ring foundation, pile and roof frame; the non-structural components include: wall, ceiling, balcony, furniture, door and window, balcony, soft decoration, etc.

[0014] In the above step three, the attenuation formula is: Ln(Y) = C0+C1M-C2Ln(R+R0)-C3R, wherein Y is the ground motion parameter to be counted and regressed, C0, C1, C2 and C3 are statistical regression coefficients, M is the earthquake magnitude, and R+R0 is the epicentral distance.

[0015] In the above step four, the empirical formula of structural and non-structural losses is:

[0016] Structural loss ratio: y = 4.683 x 10 -7 X 2 -5.662 x 10-4 X+0.99

[0017] Non-structural loss ratio: y = 4.683 x 10 -7 X 2 -5.662 x 10 -4 X+0.01

[0018] Wherein X is the peak acceleration PGA, unit Gal, so that the loss ratio data of the building to be analyzed is calculated according to the formula.

[0019] The component damage ratio D r The formula is: The damage ratio D r Is a continuous parameter between [0, 1].

[0020] Compared with the prior art, the beneficial effects of the present application are: compared with the existing building component loss analysis method of earthquake damage data, the building is refined into structural components and non-structural components for analysis, and the influence of earthquake liquefaction data on the analysis result is eliminated, the analysis result is more accurate, the error is reduced, the damage data is brought into the damage calculation formula for calculation, and the component damage ratio and the component loss ratio are used as data support, the loss situation is expressed more simply and directly by using data and indexes, fuzzy expression is avoided, and the actual loss situation is easy to understand. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The method flowchart of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Please refer to Figure 1 , the present application provides an embodiment: a building component loss analysis method of earthquake damage data, comprising the following steps: step 1, data acquisition; step 2, structure classification; step 3, parameter selection; step 4, loss ratio analysis; step 5, damage loss analysis; step 6, liquefaction analysis; step 7, comprehensive analysis;

[0024] In the above step one, first select the historical earthquake insurance database data of the region to be analyzed as the basis, and the collected information is arranged into a data set for use, and the contents in the data set include: (1) building basic information data set: building height, construction date, site condition, geographic coordinates, construction cost and building label; (2) building damage data set: building component type, loss number, component damage information, site liquefaction information and component repair situation;

[0025] In the above step two, when the data set in step one is completed, the components of the building in the region to be analyzed are classified, mainly into structural components and non-structural components, and the structural components include: wall frame, ring foundation, pile and roof frame; non-structural components include: wall, ceiling, balcony, furniture, door and window, balcony, soft decoration and the like, after the structure classification, the value of the structural components and the value of the non-structural components are counted respectively;

[0026] In the above step three, after the building component classification in step two is completed, the ground motion intensity of the earthquake is selected, and the ground motion intensity mainly includes peak acceleration and wave acceleration, since the inherent period of the building after the earthquake is difficult to estimate, the peak acceleration is selected as the ground motion parameter for calculation, and the peak acceleration is calculated by using the attenuation formula, and the attenuation formula is: Ln(Y) = C0+C1M-C2Ln(R+R0)-C3R, wherein Y is the ground motion parameter to be counted, C0, C1, C2 and C3 are statistical regression coefficients, M is the earthquake magnitude, R+R0 is the epicentral distance, and the ground motion parameter of the selected region is obtained;

[0027] In the above step four, after the ground motion parameter in step three is obtained, the historical structural and non-structural losses in the region are counted, and the results are fitted to obtain the empirical formula of structural and non-structural losses, and the empirical formula of structural and non-structural losses is:

[0028] Structural loss ratio: y = 4.683 x 10 -7 X 2 -5.662 x 10 -4 X+0.99

[0029] Non-structural loss ratio: y = 4.683 x 10 -7 X 2 -5.662 x 10 -4 X+0.01

[0030] Where X is the peak acceleration PGA, unit GAl, so as to calculate the loss ratio data of the building to be analyzed according to the formula;

[0031] Wherein in the above step five, when the loss ratio in step four is determined, the damage of the building to be analyzed is analyzed, since the building components include structural components and non-structural components, separate analysis is performed, the loss of the building components is analyzed by component vulnerability comparison and component loss ratio, the component vulnerability is the relationship between the seismic input and the component damage from the engineering point of view, wherein the component damage degree is represented by the component damage ratio, and then the structural loss and the non-structural loss of the building to be analyzed are calculated respectively by combining the structural loss ratio and the non-structural loss ratio calculated in step four, and the component damage ratio D r The formula is: The damage ratio D r is a continuous parameter between [0, 1];

[0032] Wherein in the above step six, when the structural loss and the non-structural loss of the building to be analyzed in step five are calculated, the loss caused by seismic liquefaction in the area to be analyzed is analyzed separately at this time.

[0033] Wherein in the above step seven, the building component loss caused by seismic liquefaction in step six is removed, and the structural damage and the non-structural damage of the building in the area to be analyzed are re-derived, so as to complete the analysis of the building component loss of the seismic damage data.

[0034] Based on the above, the advantages of the present application are that in the process of analyzing the building component loss of the seismic damage data, the structural components and the non-structural components of the building are analyzed separately, and the influence of the seismic liquefaction data on the analysis result is removed, the analysis result is more accurate, the error is reduced, the damage data is brought into the damage calculation formula for calculation, and in the process of analysis, the data is brought into the formula for calculation to obtain two specific quantitative data of the component damage ratio and the component loss ratio, the actual situation of the loss is obtained by using the quantitative data as the basis, the description of the fuzzy situation is avoided, the loss caused by the seismic liquefaction is removed, the analysis error is reduced, and the analysis accuracy is improved.

[0035] The above detailed description is for the specific description of the feasible embodiments of the present application, but the embodiments are not used to limit the patent scope of the present application, and equivalent implementation or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A method of building component loss analysis based on seismic damage data, comprising the steps of: The method comprises the following steps: step one, data collection; step two, structure classification; step three, parameter selection; step four, loss ratio analysis; step five, damage loss analysis; step six, liquefaction analysis; and step seven, comprehensive analysis. In the step one, the historical earthquake insurance database of the region to be analyzed is selected as the basis, and the collected information is sorted into a data set for use. In the step two, after the data set in the step one is sorted, the components of the buildings in the region to be analyzed are classified into structural components and non-structural components, and the values of the structural components and the non-structural components are counted. In the step three, after the classification of the building components in the step two is completed, the seismic intensity of the earthquake is selected, which mainly includes the peak acceleration and the spectral acceleration. Since it is difficult to estimate the natural period of the building after the earthquake, the peak acceleration is selected as the seismic parameter for calculation. The peak acceleration is calculated by using the attenuation formula, and the seismic parameter of the selected region is obtained. In the step four, after the seismic parameter in the step three is obtained, the historical structural loss and non-structural loss in the region are counted, and the results are fitted to obtain the empirical formula of the structural loss and the non-structural loss. In the step five, after the loss ratio in the step four is determined, the damage of the building to be analyzed is analyzed. Since the building components include structural components and non-structural components, they are analyzed separately. The overall loss of the building components is analyzed by combining the component vulnerability and the component loss ratio. The component vulnerability is the relationship between the seismic input and the component damage, and the component damage degree is represented by the component damage ratio. Then, the structural loss and the non-structural loss of the building to be analyzed are calculated based on the structural loss ratio and the non-structural loss ratio obtained in the step four. In the step six, after the structural loss and the non-structural loss of the building to be analyzed are calculated in the step five, the loss caused by the seismic liquefaction in the region to be analyzed is separately analyzed. In the step seven, the building component loss caused by the seismic liquefaction in the step six is removed, and the structural damage and the non-structural damage of the building in the region to be analyzed are obtained, so as to complete the analysis of the building component loss of the seismic damage data.

2. The building component loss analysis method based on seismic damage data according to claim 1, characterized in that: In the step one, the contents in the data set include: (1) building basic information data set: building height, construction date, site condition, geographic coordinates, construction cost and building number; (2) building damage data set: building component type, loss number, component damage information, site liquefaction information and component repair situation.

3. The building component loss analysis method based on seismic damage data according to claim 1, characterized in that: In the step two, the structural components include wall frame, ring foundation, pile and roof frame; and the non-structural components include wall surface, ceiling, balcony, furniture, door and window, balcony, soft decoration, etc.

4. The building component loss analysis method based on seismic damage data according to claim 1, characterized in that: In the third step, the attenuation formula is: Ln(Y)=C0+C1M-C2Ln(R+R0)-C3R, wherein Y is the ground motion parameter to be statistically regressed, C0, C1, C2 and C3 are statistical regression coefficients, M is the earthquake magnitude, and R+R0 is the epicentral distance.

5. The building component loss analysis method based on seismic damage data according to claim 1, characterized in that: In the fourth step, the empirical formula of the structural loss and the non-structural loss is: Structural loss fraction: y = 4.683 x 10 -7 X 2 -5.662 x 10 -4 X + 0.99 Non-structural loss ratio: y = 4.683 x 10 -7 X 2 -5.662 x 10 -4 X + 0.01 wherein X is the peak ground acceleration PGA, the unit is GAl, and the loss ratio data of the building to be analyzed are calculated according to the formula.

6. The building component loss analysis method based on seismic damage data according to claim 1, characterized in that: In the fifth step, the member damage ratio D r The formula is: The damage ratio D r is a continuity parameter between [0, 1].

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