SEISMIC PERFORMANCE OF A LONG SPAN ARCH BRIDGE TAKING ACCOUNT OF FLUCTUATION OF AXIAL FORCE
The seismic behavior of a long-span arch bridge is investigated based on a series of nonlinear dynamic analyses. The bridge was modeled with ADINA by means of elements with nonlinear behavior Since the axial force and bending moment interaction is significant in the arch rib under strong ground motions, this effect is included in the analyses by frame elements varying their moment-curvature relations. It was found from the analyses that large axial forces, as much as 1.5 times the dead axial force are developed in the arch rib during excitations, so moment-curvature relations change in the arch rib and hence should be considered in design.
Arch bridges nonlinear dynamic analysis seismic performance.
Hidalgo Chavez Jose J. Alvarez
Graduate student, Universidad Michoacana de San Nicolas de Hidalgo, Mexico Professor, Universidad Michoacana de San Nicolas de Hidalgo, Mexico
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）