城市快速路高架桥结构设计研究

Structural design of viaduct on urban expressway

以某城市快速路高架桥为研究对象,重点介绍了高架桥的结构设计,并对其结构进行了验算分析,研究表明:在承载能力极限状态和正常使用极限状态下,高架桥的组合梁承载力、裂缝宽度及挠度和下部结构强度、应力、裂缝等均满足规范要求;现浇连续箱梁结构在承载能力极限状态和正常使用极限状态下抗弯抗剪强度、应力、抗裂均满足规范的要求;由高架桥结构验算可知,该高架桥安全可行,符合规范标准。

Taking the viaduct of an urban expressway as the research object,this paper mainly introduces the structural design of the viaduct,and carries out the checking calculation and analysis of its structure.The research shows that:under the ultimate state of bearing capacity and the ultimate state of normal use,the bearing capacity,crack width and deflection of the composite beam of the viaduct and the strength,stress and crack of the substructure all meet the requirements of the specification;the cast-in-place continuous box girder can meet the requirements of the specification The bending and shear strength,stress and crack resistance of the beam structure in the limit state of bearing capacity and the limit state of normal use meet the requirements of the specification;the viaduct structure checking calculation shows that the viaduct is safe and feasible,and meets the specification standards.