铁道标准设计2017，Vol.61Issue(6)：88-92,5.DOI:10.13238/j.issn.1004-2954.2017.06.019
客运专线铁路宽幅长联大跨连续梁桥设计关键技术研究
Technological Study on the Design of Long Connection and large Span Continuous Beam Bridge with Wide Deck for Dedicated Passenger Line
摘要
Abstract
Qianjiang new railway bridge located in Hangzhou is a high-speed railway continuous beam bridge for both the Hangzhou-Ningbo and Shanghai-Hangzhou-Ningbo dedicated passenger lines to cross over Qiantang River. The bridge is characteristic of wide deck, large span, multi and large spans in a single bridge link, complicated vertical and horizontal structure forces, and obvious spatial effect, which address the importance of key technological design. In this paper, with the help of the finite element model and dynamic analysis of vehicle-bridge coupling of Qianjiang new railway bridge, some key technical problems such as shear lag effect, partial load factor effect, earthquake resistance and shock absorption measures, large displace-ment expansion joint, coupled vibration of vehicle and bridge are studied. The results show that the shear lag effect is obvious and the normal stress and shear stress are different. The viscous damping can effectively reduce the horizontal seismic force along the bridge and the bending moment in pane on the braking pier. Telescopic device TW450 can meet the requirements of large expansion displacement on the beam end and the dynamic responses of both the bridge and the train are adequate for the designed speed of the train.关键词
客运专线铁路/连续梁桥/大跨度/长联/宽幅/设计Key words
Dedicated passenger railway line/Continuous beam bridge/Large span/Long connection/Wide deck/Design分类
交通工程引用本文复制引用
彭文成..客运专线铁路宽幅长联大跨连续梁桥设计关键技术研究[J].铁道标准设计,2017,61(6):88-92,5.基金项目
中铁第四勘察设计院集团有限公司科技研究开发计划项目(2013K07) （2013K07）
