Seismic Safety Evaluation of Bridge Structures Based on Inelastic Spectrum Method
In recent years, Push-over analytical method was regarded as a new evaluation method for seismic resistance capacity of structure in some advanced countries. More available information can be obtained from Push-over analysis than from elastic static, even elastic dynamic analysis and the method is easy to be operated. Its basic elements, analysis process and the state-of-the-art are reviewed and the elastic spectrum from the Chinese Seismic Resistance Design Code for Highway Engineering (JTJ 004-89) was improved in order to take the inelastic effect into account herein. The inelastic demand spectra for four site conditions were derived by means of Vidics strength reduction factors. The factors were studied in detail. By comparing capacity curves of bridge structure with the demand elastic spectrum, the earthquake resistance of bridge structure can be estimated. Furthermore, it is applied to evaluate seismic resistance capacity of a real bridge example in this paper. The results show that Pushover method can replace inelastic dynamic history analysis method in some cases.
evaluation bridge structures reduction factor inelastic spectrum
Cui Gaohang Liu Chunguang Tao Xiaxin Chen Xianmai
Doctor, Dept. of Civil Engineering, Harbin Institute of Technology, Harbin. China Professor, Dept. of Civil Engineering, Dalian University of Technology, Dalian China Professor, Dept. of Civil Engineering, Harbin Institute of Technology, Harbin. China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）