关键词: 连续梁桥, 地震响应, 反应谱, 桩土效应, 活动支座, 固定支座

Abstract: In general, large span of continuous prestressed concrete girder bridges only place one fixed buttress. For the bridge span is longer, the vertical seismic response of a fixed pier is also correspondingly larger. Using response spectrum, the impact of the seismic response of different types of bearings bound for a fixed bridge pier and fixed bearing is discussed. The results show that different types of restraint bearing have a greater impact on the seismic response of continuous bridge. At the same time, the impact of pile-soil interaction on continuous bridge dynamic characteristics and the seismic response is also analyzed. The results of this research can provide references for the anti-seismic design of similar bridges.

Key words: continuous girder bridge , seismic response , response spectrum , peg-soil effect , mobile support , fixed support ;