现浇混凝土梁板+钢格构柱组合式新型铁路便桥设计研究  

STUDY ON CAST-IN-PLACE CONCRETE BEAM SLAB AND STEEL LATTICE COLUMN COMPOSITE RAILWAY TEMPORARY BRIDGE STRUCTURE

作　　者：刘传平[1,2] 张志彬[2] 李奇[1] 贾坚[1,2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《工程力学》2013年第B06期34-38,共5页Engineering Mechanics

摘　　要：结合工程实际提出了采用现浇钢筋混凝土梁板+钢格构柱组成的组合式新型铁路便桥结构,并成功地在铁路枢纽工程中应用。着重阐述了混凝土梁板+钢格构柱组合式铁路便桥结构的动力特性分析和车桥耦合振动响应分析,并采取有针对性的增强便桥横向刚度的设计措施。组合式铁路便桥是对现有铁路便桥结构的一种补充,较好的解决了跨既有线的铁路站房建设与保证既有线安全正常运营的矛盾。According to engineering demands, a composite railway temporary bridge and its application in railway hub projects are presented. The force-resistant system in the bridge is composed of two parts： the cast-in-place reinforced concrete beams and slabs, and the steel lattice columns. The dynamic and vehicle-bridge coupling vibration characteristics of the bridge are analyzed, based on which design strategies are adopted in the project to strengthen the lateral stiffness. In railway hub projects, the composite temporary bridge effectively resolves the contradictions between railway station construction and the safety operation of existing railway lines, and could be an ideal complement of the traditional temporary bridge.

关 键 词：铁路便桥 钢格构柱 组合式 动力分析 车桥耦合振动 

分 类 号：TU318[建筑科学—结构工程]