独塔单索面预应力混凝土斜拉桥静载试验

为了评定某独塔单索面预应力混凝土斜拉桥结构的受力性能与工作状态,以成桥静载试验结果为依据,通过对静载试验相关工况下控制截面的斜拉索索力增量、桥塔塔顶偏位、主梁挠度和截面应力等重要试验数据的详细分析,结合理论计算结果来研究不同静载试验工况下该斜拉桥的索力变化规律、塔顶偏位、结构强度和刚度等特性.分析结果表明,静力荷载作用下该桥索力、塔顶偏位、应力和挠度均能满足规范要求,该桥承载能力满足设计要求.

Static Load Testing of a PC Cable-Stayed Bridge with a Single Pylon and Single Cable Plane

To assess the mechanical behavior and working conditions of a prestressed concrete(PC) cable-stayed bridge structure with a single pylon and single cable plane,the results of the static load testing of the completed bridge of the bridge were taken as the basis,the variation laws of the stay cable forces and the characteristics of the pylon top displacement,structural strength and structural rigidity of the bridge under the different load cases for the static load testing were studied through the detailed analysis of the important testing data,including those of the stay cable force increment of the controlled section,the pylon top displacement,the deflection of the main girder and the sectional stress under the load cases and also with reference to the results of the theoretic calculation.The results of the study demonstrate that under the action of the static load testing,the stay cable forces,pylon top displacement,stress and deflection can all satisfy the relevant requirements in the codes and the carrying capacity of the bridge can meet the design requirement as well.