独塔单索面转体施工斜拉桥承载能力评估研究

Research on Evaluation of Bearing Capacity of Cable-stayed Bridge with Single-pylon and Single-plane Swivel Construction

为了更好地掌握斜拉桥使用状态,对斜拉桥的成桥荷载试验及运营期的承载能力进行评估就显得至关重要。列举工程实例,详细阐述了独塔单索面转体施工斜拉桥的计算及荷载试验过程,主要包括斜拉桥有限元仿真模型的建立方法、动静载荷试验工况的设置、关键断面试验测点的布设、以及斜拉桥的自然脉动和动态跑车试验测试的相关参数及要求。同时,结合实例对荷载试验数据的分析研判做出阐释,可对此类工程提供参考。

In order to better understand the use status of the cable-stayed bridge,it is crucial to perform the load test on the completed bridge and evaluate the bearing capacity of the cable-stayed bridge during operation.The calculation and load test process of the cable-stayed bridge with single-pylon and single-plane swivel construction are elaborated in detail by citing engineering examples,mainly including the establishment method of the finite element simulation model of the cable-stayed bridge,the setting of dynamic and static load test conditions,the layout of key section test points,and the relevant parameters and requirements for natural pulsation and dynamic sports car test of the cable-stayed bridge.At the same time,the analysis,research and judgment of load test data are explained in combination with the living example,so as to provide reference for carrying out this type of work.