桥梁结构在地震和冰荷载作用下的响应

Studies on bridge structure subjected to earthquake and ice loads

本文采用杆系有限元方法,研究了桥墩结构在地震和冰荷载作用下的响应问题。根据桥梁的结构特点,建立其力学模型,考虑柱墩受支座的约束作用,推导了桥墩结构的动力平衡方程,分别研究桥墩结构在地震和冰荷载作用下以及在其共同作用下的响应问题,比较了考虑柱墩受支座的约束作用与不考虑柱墩受支座的约束作用2种情况下桥墩结构的响应问题,为研究桥墩结构在多荷载作用下的响应问题提供理论依据。

In this paper, the responses of bridge structure to earthquake and ice loads are studied. The analysis model of bridge structures is proposed for earthquake and ice loads by considering the models of column, beam and friction force at movable supports, and equilibrium equation of bridge structure is derived. Bridge structure responses are studied under earthquake action, ice action and joint action of them, respectively. And pier responsess are studied by comparing two states with restraint supports and without restraint support. All analysis methods presented can be employed to study bridge structure responses under more types of actions.