斜拉扣挂悬浇拱桥最大悬臂状态内力优化方法研究  

Study on Internal Force Optimization Method of Cable-stayed Suspension Cantilever-poured Arch Bridge under Maximum Cantilever State

作　　者：欧阳常伟 邓延权 OUYANG Chang-wei DENG Yan-quan(Guangxi Transportation Research ＆ Consulting Co., Ltd., Nanning, Guangxi, 53000)

机构地区：[1]广西交通科学研究院有限公司,广西南宁530007

出　　处：《西部交通科技》2017年第10期55-58,67,共5页Western China Communications Science & Technology

摘　　要：对于设计参数已确定的悬浇拱桥,其成桥内力取决于合龙前的内力状态。文章通过建立拱圈合龙前索力调整的非线性规划数学模型,利用数值分析软件MATLAB中的优化工具箱,编制了相应索力调整求解程序,并以贵州某拱桥为工程背景,通过对部分索力进行调整,优化拱圈内力。结果表明,该方法优化效果明显,方法简单,易于操作,具有一定的实用价值。For the cantilever arch bridge with the design parameters already determined, its internal force of finished bridge depends on the internal force before the closure.Through establishing the non- linear programming mathematical model of cable force adjustment before arch ring closure and by u- sing the optimization toolbox in numerical analysis software MATLAB,this article compiled the corre- sponding cable force adjustment solving program,and with an arch bridge in Guizhou as engineering background,it optimized the internal force of arch ring by adjusting some cable force.The results showed that this method has obvious optimization effect,simple and easy to operate,thus it has cer- tain practical value.

关 键 词：斜拉扣挂 拱桥 索力 内力优化 非线性规划数学模型 数值分析软件 

分 类 号：U448.214[建筑科学—桥梁与隧道工程]