复杂空间多段索异形塔斜拉桥成桥索力计算方法研究  

Research on Cable Force Calculation Method of Complex Space Multi-Segment Cable-Shaped Tower Cable-Stayed Bridge

作　　者：董宇航 周迅 徐斌 聂立力 DONG Yu-hang;ZHOU Xun;XU Bin;NIE Li-li(Central&Southern China Municipal Engineering Design&Research Institute Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430010

出　　处：《中国市政工程》2023年第6期62-67,102,103,共8页China Municipal Engineering

摘　　要：常规斜拉桥合理成桥状态下的索力求解方法有许多,但其直接用于复杂空间多段索异形塔斜拉桥的成桥索力求解时,往往无法快速得到较为合理的结果。为解决复杂空间多段索异形塔斜拉桥的成桥索力求解问题,采用基于结构隔离法的成桥索力分步计算方法。以湖北省随州市㵐水一桥的主桥为计算对象,对复杂空间多段索异形塔斜拉桥实例的成桥索力进行求解,得出较为合理的成桥索力。结果表明,该方法能够简化复杂空间多段索异形塔斜拉桥的合理成桥状态索力试算过程,并得到较好的初始索力值,其方法简单有效。There are many methods for solving the cable forces of conventional cable-stayed bridges in a reasonable state of completion,but when directly used for solving the cable forces of complex space multisegment cable shaped tower cable-stayed bridges,it is often difficult to quickly obtain more reasonable results.To solve the problem of cable force calculation for complex space multi-segment cable shaped tower cable-stayed bridges,a step-by-step calculation method for cable force based on structural isolation method is adopted.Taking the main bridge of Jueshui Bridge I in Suizhou,Hubei as the calculation object,the cable forces of a complex spatial multi-segment cable-stayed bridge with irregular towers are solved,and a reasonable cable force for the completed bridge is obtained.The results show that the method can simplify the reasonable calculation process of cable tension for complex space multi-segment cable-stayed bridges with irregular towers,and obtain good initial cable tension values.The method is simple&effective.

关 键 词：斜拉桥 索力计算 结构隔离法 空间多段索 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]