基于叠合理论的钢管混凝土预应力连续桁架梁桥结构分析  

Structural Analysis of Concrete-filled Steel Tube Prestressed Continuous Truss Beam Bridge Based on the Superposition Theory

作　　者：袁晓辉[1] 王佶[1] 卢哲安[1] 范剑锋[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《武汉理工大学学报》2012年第7期102-106,共5页Journal of Wuhan University of Technology

摘　　要：以四川干海子钢管混凝土预应力连续桁架梁桥为工程背景,结合大桥具体的实际施工过程,将大桥主体结构视为典型的预应力叠合结构,采用有限元联合截面模拟叠合梁,对该桥35、36试验跨预应力叠合结构的施工全过程进行仿真计算,计算结果和试验结果吻合良好。结果表明:采用叠合梁模式对该桥结构进行分析的方法是可行的,接近实际。This paper took the construction of Ganhaizi concrete-filled steel tube pre-stressed continuous truss beam bridge as the engineering background.Combined with the actual construction process of the bridge,taken the main structure of the bridge as the typical prestressed laminated structure and used the finite element joint section to simulation the whole construction process of the 35 and 36 experimental cross laminated structure of the bridge.Theoretical analysis combined with the field test,and the calculation results are in good agreement with the experimental results,which shows that the method of using laminated beam model to analyse the structure of the bridge is feasible and can better reflect the bridge structure stress characteristic,close to the reality.

关 键 词：钢管混凝土 桁架梁桥 联合截面 有限元 叠合梁 

分 类 号：TU37[建筑科学—结构工程]