期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Influence of earthquake input angle on seismic response of curved girder bridge 被引量:3
1
作者 Yongjun Ni Jiayu Chen +1 位作者 Hualiang Teng Hui Jiang 《Journal of Traffic and Transportation Engineering(English Edition)》 2015年第4期233-241,共9页
The maximum seismic response of curved bridge is significantly related to the input angle of designated earthquake. Owing to structure irregularities, bridge reactions result from the interaction between the moment an... The maximum seismic response of curved bridge is significantly related to the input angle of designated earthquake. Owing to structure irregularities, bridge reactions result from the interaction between the moment and torsion forces. Based on the solving of the seismic response of structure excited by a one-way earthquake input, a uniform expression of the unfavorable angle of the earthquake input was derived, and the corresponding maximum response of structure was determined. Considering the orthotropic and skewed dual- directional earthquake input manners, the most unfavorable angles for the two cases were also derived, respectively. Furthermore, a series finite element models were built to analyze the multi-component seismic responses by examining an example of curved girder bridge considering the variation of curvature radius and the bearings arrangement. The seismic responses of the case bridges, were excited by earthquakes at different input angles, and were calculated and analyzed using a response spectrum method. The input angles of earthquake excitation were progressively increased. From the analysis and comparison based on the calculation results mentioned above, the most unfavorable angle of earthquake excitation corresponding to the maximum seismic response of the curved bridge could be determined. It was shown that the most unfavorable angles of earthquake input resulted from the different response combination methods were essentially coherent. 展开更多
关键词 curved girder bridgeearthquake inputseismic responseunfavorable angle
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部