钢-混结合连续梁墩顶负弯矩区应力控制措施研究  

Study on Stress Control Measures in Negative Moment Region of Top Pier of Steel-Concrete Continuous Beam

作　　者：车文庆[1] 李传琳[1] 

机构地区：[1]中铁二院昆明勘察设计研究院有限责任公司,昆明650200

出　　处：《工程建设与设计》2018年第2期141-143,共3页Construction & Design for Engineering

基　　金：云南省科技富民强县计划(项目编号2015EA002)

摘　　要：采用TDVRMV8i建立钢-混结合连续梁有限元模型,对比分析其墩顶负弯矩区桥面板分别采用普通钢筋混凝土和预应力混凝土2种材料,以及桥梁顶推到位后先浇筑墩顶负弯矩区桥面板和先浇筑跨中桥面板2种施工顺序对钢-混结合连续梁成桥后墩顶负弯矩区钢箱梁和桥面板受力的影响情况。结果表明:钢-混结合连续梁墩顶负弯矩区桥面板采用预应力混凝土并采用先浇筑跨中桥面板法施工较为合理。The finite element model of a steel-concrete composite continuous girder was established by using TDV RMV8i. The paper compared the mechanical behavior of steel box girder and bridge deck at the hogging moment region which was at the top of the pier in two ways. The first one is two materials used on the bridge deck： reinforced concrete and prestressed concrete. The other one is two construction sequences： firstly pouring the bridge deck at the hogging moment region which was at the top of the pier and firsdy pouring the bridge deck at the mid=span of the bridge. The results show that it was reasonable to use prestressed concrete and construct the bridge deck at mid-span firstly.

关 键 词：钢-混结合连续梁 负弯矩区 受力性能 材料 施工顺序 

分 类 号：U448.38[建筑科学—桥梁与隧道工程]