秀山西门桥改造工程缩尺模型及实桥静载试验抗扭性能研究  

Reduced Scale Model of Ximen Bridge Renovation Project in Xiushan and Research on Torsion Resistance of Static Load Test on Real Bridge

作　　者：曹淑上[1] 罗钧[1] 黄祖林 陈港[1] Cao Shushang;Luo Jun;Huang Zulin;Chen Gang

机构地区：[1]重庆市建筑科学研究院,重庆400016 [2]重庆大学土木工程学院,重庆400045

出　　处：《重庆建筑》2018年第12期15-17,共3页Chongqing Architecture

基　　金：重庆市建筑科学研究院科研合作项目"钢筋混凝土窄梁桥长悬臂钢梁拓宽及截面转换加固模型试验研究"

摘　　要：该文对秀山西门桥改造工程采用的截面转换加固技术进行了模型试验及实桥静载试验研究。首先制作了加固前后桥梁结构的1:5缩尺模型,对采用截面转换法加固前后桥梁结构的抗扭刚度和扭转变形进行对比分析;然后对加固后实桥结构进行静载试验,以对该加固方法的实际应用进行评价。研究结果表明,采用截面转换加固能够大幅提升该类桥梁结构的抗扭刚度和抗扭承载能力。In this paper,the scale model test and the bridge static load test are carried out on the section conversion reinforcement technology used in Ximen Bridge renovation project in Xiushan.Firstly,the1:5reduced scale models of the bridge structure before and after reinforcement are made,the torsional stiffness and torsional deformation of the bridge structure before and after reinforcement with the section conversion method are comparatively analyzed.Then,the practical application of the reinforcement method is evaluated by static load test on the reinforced bridge structure.The results show that the torsional stiffness and torsional bearing capacity of this type of bridge structure can be greatly improved with the section conversion reinforcement method.

关 键 词：秀山西门桥 抗扭性能 截面转换加固法 模型试验 偏载试验 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]