连续梁转体施工系统设计

根据2011年铁道部发布的《关于开展客运专线建设有关问题设计核查的紧急通知》及上海铁路局宁波铁路枢纽建设指挥部甬枢建指函2011]6号《关于优化设计方案的函》的要求,鄞县大道右线特大桥位于沿海平原河网化地区,若采用本线下穿杭深铁路客专方案,则地方的水系及道路遭到严重破坏,难以连通,因此鄞县大道右线特大桥仍采用上跨杭深铁路客专方案.经研究决定,采用(45.35+74+42.205)m连续梁桥,采用先悬臂浇注,后平衡转动体系转体施工法.对该桥进行了转体结构设计和结构验算,满足规范要求.为确保安全顺利转体,提出了转体施工应该注意的事项,为同类桥梁的转体施工提供参考.

System Design of Swung Continuous Beam

According to the＆quot;Urgent Notice of the Construction of Passenger Dedicated Line Issues Related to Design Verification＆quot;published by the Ministry of Railway in 2011 and the requirement of＆quot;The Letter about the Optimization Design Plan＆quot; 2011 ]6 by Ningbo railway construction headquarters of Shanghai Railway Bureau,if the bridge on Yinxian Avenue right line located in the river network area of coastal plain underpasses Hang-Shen passenger railway,the local water system and road will be severely damaged and will not be connected,so the plan of overcrossing is adopted.The continuous beam bridge of （45.35 ＋74 ＋42.205）m is adopted,and the method of beam firstly cantilever poured and then swung is applied.The design of rotation structure and its checking computation are proved to meet the standard requirement.In order to ensure the swing safely,the points for attention of the swing method are proposed,and it provides the reference for rotation construction of the similar project.