摘要
新建杭绍台铁路绍兴北站特大桥上、下行联络线与既有杭甬高铁5、6号到发线连通,其中联络线桥梁1~#—7~#墩为高架桥改建范围。根据改建范围内桥梁结构设计方案,建立桥墩实体有限元计算模型及梁-墩台-基础整体有限元模型,计算结果表明,在移梁及运营荷载作用下,桥梁各构件受力均满足要求;对移梁施工方案进行研究,介绍移梁参数及施工工装;采用有限元模型计算分析4个主要工况下桥梁施工对既有桥梁的影响,并提出针对此类工程问题的设计、施工处理措施。该研究可为类似项目提供参考。
The up and down connecting lines of Shaoxingbei Station Super Major Bridge of Hangzhou-ShaoxingTaizhou HSR are connected with Tracks 5 and 6 of the existing receiving-departure track of Hangzhou-Ningbo HSR,of which the 1—7piers of the new connecting line bridge are within the scope of viaduct reconstruction.According to the bridge structure design scheme within the scope of reconstruction,the finite element calculation model of the pier and the overall finite element model of beam-pier-foundation are established.The calculation results show that the stress of each structural member of the bridge meets the requirements under the action of beam movement and operating load;the method statement for beam movement is studied,and the beam movement parameters and construction tooling are introduced;the finite element model is used to calculate and analyze the impact of new bridge construction on existing bridges under 4 main working conditions,and the design and construction treatment measures for such engineering problems are proposed.This study can provide references for related high speed railway viaduct reconstruction project.
作者
李伟超
张雷
李战胜
赵若昀
卢文良
张晓华
陈春安
LI Weichao;ZHANG Lei;LI Zhansheng;ZHAO Ruoyun;LU Wenliang;ZHANG Xiaohua;CHEN Chun’an(Civil Engineering Design Research Institute,China Railway Design Corporation,Tianjin 300308,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Hang-Shao-Tai Railway Co.,Ltd.,Hangzhou Zhejiang 311215,China)
出处
《中国铁路》
2022年第10期74-79,共6页
China Railway
基金
中国铁路设计集团有限公司科技开发项目(2020YY230107)。
关键词
杭绍台铁路
高速铁路
高架桥
改建
移梁
施工措施
Hangzhou-Shaoxing-Taizhou HSR
high speed railway
viaduct
reconstruction
beam movement
construction measures
