Study on Loss Assessment of Building Damages of Urban Earthquake

Abstract eng:
The implement of work on Loss Assessment of Earthquake Damage provided reliable basis for national relief organization and homeland rehabilitation. The current method of assessment of earthquake damage derives from Datong-Yanggao Earthquake （Ms6.1） 1989, which is suitable for undeveloped rural areas; In recent ten years, in the level of decoration is improved quickly in our cities, and most of personal and public buildings used middle and top grade of decoration, the expense of some building even is higher that of main structure. Therefore, the previous assessment method has some disadvantages for building with higher grade of decoration. Based on above analysis, a new method for the assessment of earthquake-induced building losses is presented, which includes three parts-one of main structure, decoration and indoor property, it is fit for the actual situation of the loss of urban earthquake. In this paper, based on a large of engineering cost information and expert experience, distribution of proportion of corresponding decoration cost in the total building cost is given, and damage grades of building main structure and decoration are more detailed divided and defined separately according to difference of its usage、 economic development level、 scale、 city decoration grade; in the same time, using ATC method developed by American Application Technology Committee(ATC) and questionnaire of wanting numbers of domestic expert opinion of earthquake engineering domain, Loss Ratio probability distribution of different usage building decoration is obtained based on statistical analysis of investigation results; thus, it provides certain reference and basis for further modifying and perfecting of Loss Assessment of Seismic Disasters of our country.

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