Influence of earthquake input angle on seismic response of curved girder bridge

被引：23
作者：
Ni, Yongjun [1 ,2 ]
Chen, Jiayu [2 ,3 ]
Teng, Hualiang [1 ]
Jiang, Hui [2 ]
机构：
[1] Univ Nevada, Dept Civil & Environm Engn, Las Vegas, NV 89119 USA
[2] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China
[3] Cent Res Inst Bldg & Construct Co Ltd, Beijing 100088, Peoples R China
来源：
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING-ENGLISH EDITION | 2015年 / 2卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Curved girder bridge; Earthquake input; Seismic response; Unfavorable angle;
D O I：
10.1016/j.jtte.2015.05.003
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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. (C) 2015 Periodical Offices of Chang'an University. Production and hosting by Elsevier B.V. on behalf of Owner.
引用
收藏
页码：233 / 241
页数：9
相关论文
共 17 条
[1]  
Fan L.C., Nie L.Y., Li J.Z., Discussion on standard of critical angle of seismic wave in seismic analysis of complicated structures, Journal of Tongji University: Natural Science, 31, 6, pp. 631-636, (2003)
[2]  
Gao X.A., Zhou X.Y., Dynamic analysis method of the curved bridge under multi-component, Special Structures, 22, 1, pp. 56-60, (2005)
[3]  
Kawashimak K., Penzien J., Theoretical and experimental dynamic behavior of a curved model bridge structure, Earthquake Engineering and Structural Dynamics, 7, 2, pp. 129-145, (1979)
[4]  
Li G.H., Shi D., Heins C.P., The finite element method of the seismic analysis of the curved bridge, Journal of Tongji University: Natural Science, 23, 1, pp. 1-21, (1984)
[5]  
Nie L.Y., Li J.Z., Hu S.D., Et al., Nonlinear analysis and seismic estimation on curved beam bridge, Journal of Tongji University: Natural Science, 32, 10, pp. 1360-1364, (2004)
[6]  
Qin Q., Zhang W., Luo L., Seismic evaluation of overcrossing bridges using inelastic response analysis, China Civil Engineering Journal, 29, 4, pp. 3-10, (1996)
[7]  
Saad A.S., Sanders D.H., Buckle L.G., Effect of rocking foundations on seismic behavior of horizontally curved bridges with different degree of curvatures, Proceedings of 15th World Conference on Earthquake Engineering, Lisbon, 2012, (2012)
[8]  
Tseng W.S., Penzien J., Seismic analysis of long multiple-span highway bridges, Earthquake Engineering and Structural Dynamics, 4, 1, pp. 1-24, (1975)
[9]  
Tseng W.S., Penzien J., Seismic response of long multiple-span highway bridges, Earthquake Engineering and Structural Dynamics, 4, 1, pp. 25-48, (1975)
[10]  
Wieser J.D., Maragakis E., Buckle I.G., Et al., Experimental evaluation of seismic pounding at seat-type abutments of horizontally curved bridges, Proceedings of 15th World Conference on Earthquake Engineering, Lisbon, 2012, (2012)
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