摩擦摆支座对复杂多跨长联PC连续梁桥支座预偏量的影响

Effect of Friction Pendulum Bearing on Pre-deflection of Bearing of Complex Multi-span Long PC Continuous Beam Bridge

以海子湖总长1434m的15跨一联不等跨变截面连续梁为例,通过Midas有限元软件模拟摩擦摆支座力学特性并建立全桥施工阶段仿真模型,模拟了31个施工阶段和六个合龙状态,对比分析了普通支座与摩擦摆减隔震支座两种布置条件下,支座摩擦力、恢复力对长联不等跨变截面PC连续梁各活动支座在预应力、收缩徐变以及温度变化作用下的纵向偏移设置的影响.

Taking a 15-span continuous unequally-span continuous beam with a total length of 1434 m as an example,Using Midas finite element software to simulate the mechanical characteristics of friction pendulum bearings,a simulation model for the construction stage of the full bridge was established,Simulated 31 construction stages and six Helong states,Contrast and analyze the two kinds of arrangement conditions of ordinary bearing and friction pendulum isolation bearing,The influence of bearing friction and restoring force on the longitudinal offset setting of each movable bearing of PC continuous beam with unequal span and variable cross section,The influence of bearing friction and restoring force on the longitudinal offset setting of each movable bearing of PC continuous beam with unequal span and variable cross section.