深水高墩大跨连续刚构桥梁墩型设计探讨

Discussion on the Design of High-span Continuous Rigid Bridge

连续刚构桥型由于其跨越能力强、后期养护费用少,近年来在山区公路建设中使用越来越多。连续刚构桥墩一般采用单肢或双肢薄壁箱型截面,但在水电站库区内,由于库水与地震的相互作用,使得该特殊条件下的连续刚构桥墩设计存在一定特殊性。本文采用矩形空心薄壁箱型墩与一种新型格构式双肢薄壁墩在考虑动水压力条件下的地震响应分析对比,探讨两种不同墩型对交界墩地震响应的影响,为同类桥型的设计提供借鉴和参考。

Continuous rigid structure bridge type, due to its strong span ability and low late maintenance cost, is more and more used in mountain road construction in recent years.Continuous rigid bridge pier generally adopts single-limb or double-limb thin-wall box section, which makes the design under the special conditions special.This paper discusses the influence of the two different piers on the junction pier, and provides reference for the design of the similar bridge type.