土木工程与管理学报2016，Vol.33Issue(5)：44-48,70,6.
采用拉索模数伸缩缝的连续梁桥地震响应
Seismic Response of Continuous Beam Bridges with Cable-modulus Expansion Joints
摘要
Abstract
The cable-modulus expansion joints are introduced to prevent the unseating and pounding of the adjacent girders of the multi-span continuous bridges subjected to strong earthquakes. Firstly, there is a brief introduction of the working principle and mechanical modeling of the device. Secondly, a 3D model of a triple continuous beam bridge was established. Lastly, the relative displacements and shear forces at the bottom of the piers under different site soil and seismic intensity were calculated respectively. The results present that the device can significantly reduce the relative displacement of the adjacent girders and prevent the pounding under different site soil and seismic intensity. What’ s more, the cable bearing comprised of cables and normal bearing can not only limit the relative displacement, but also make the seismic forces attribute uniformly at each pier of the bridge, which can really realize the perfect coordination of force and displacement.关键词
拉索模数伸缩缝/不同场地/烈度/连续梁桥/地震响应Key words
cable-modulus expansion joints/different site soil and seismic intensity/continuous beam bridges/seismic response分类
交通工程引用本文复制引用
郭军军,党新志,袁万城,徐变..采用拉索模数伸缩缝的连续梁桥地震响应[J].土木工程与管理学报,2016,33(5):44-48,70,6.基金项目
国家自然科学基金(51478339 （）
51278376 （）
91315301) （）
江西省科技计划项目(20151BBG70064) （20151BBG70064）
土木工程防灾国家重点实验室基金资助项目(SLDRCE14-B-14) （SLDRCE14-B-14）
