罕遇地震作用下V型墩混凝土刚构桥抗震性能研究  

Research on the Seismic Performance of V- shaped Pier Concrete Rigid Frame Bridge under Rare Occurrence Earthquakes

作　　者：马玥[1] 葛琳[2] 白丽婷[2] 王占飞[2] 

机构地区：[1]大连海洋大学职业技术学院,大连116300 [2]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《北方交通》2013年第11期31-34,共4页Northern Communications

基　　金：国家自然科学基金项目(51178279);辽宁省自然基金(2013020149)

摘　　要：为了探明在罕遇地震作用下V型墩混凝土刚构桥抗震性能,以实际工程中一座桥梁为研究对象,利用有限元软件Midas civil建立了全桥的有限元弹塑性模型,进行非线性动力时程分析,考察了4号V型桥墩墩顶反应位移和墩底弯矩-曲率反应曲线。研究结果表明,该桥梁在顺桥和横桥方向罕遇地震作用下,结构进入弹塑性,但未达到极限状态。同时采用位移指标来评价该结构是安全的。In frame bridge under order to know more clearly about the seismic performance of V - shaped pier concrete rigid rare occurrence earthquakes, a bridge of such kind in the practical engineering has been chosen as the object whose finite element elastic -plastic model has been developed with the finite element software Midas civil. Also, nolinear dynamic and time - historical analysis has been developed. At the same time, the response displacement of the pier top and the bending moment of the pounding bottom - reaction curve of the curvature of No. 4 V - shaped pier has been observed. The result proves that under the actions of rare occurrence earthquakes, that have taken place both along the bridge and across the bridge, the structure of the bridge has been elastic - plastic, but not to the limiting condition. Displacement indicators are used to prove that the structure is safe.

关 键 词：混凝土刚构桥 V型墩 罕遇地震 非线性动力时程分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]