双肢薄壁墩系梁对连续刚构桥抗震影响分析  

Analysis of seismic effects of double-limb thin-walled pier tie beams on continuous rigid bridges

作　　者：印杰 宁晓骏[1] 唐正光[1] 杨东 YIN Jie;NING Xiaojun;TANG Zhengguang;YANG Dong(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology Kunming 650500)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500

出　　处：《工业安全与环保》2022年第3期10-13,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51068012);云南省交通厅科技项目(2013(c)07)。

摘　　要：连续刚构桥在我国西南地区的应用越来越广泛,以高墩连续刚构桥为研究对象,以双肢薄壁墩系梁间距为主要参数,分析桥梁振型频率、墩顶位移、墩顶内力以及墩底内力在地震响应下评价桥梁的抗震性能和纵桥向系梁对刚构桥稳定性的影响。结果表明:在地震响应下,对于纵桥向系梁间距为21.7 m最为合适。The application of continuous rigid frame bridges in southwest China is becoming more and more widespread.This paper takes high pier continuous rigid frame bridge as the research object. Taking the double limb thin-walled pier tie beam as the main parameters, the seismic performance of the bridge and the influence of the longitudinal bridge tie beam on the stability of the rigid frame bridge are evaluated by analyzing the bridge vibration mode frequency, pier top displacement, pier top internal force and pier bottom internal force under the seismic response. The results show that the tie beam in the pier is not conducive to the seismic performance of the bridge, but it is conducive to improve the seismic performance of the double leg thin-walled pier.

关 键 词：双肢薄壁墩系梁 连续刚构桥 非线性时程分析方法 模型对比分析 稳定性 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]