中央索面预应力混凝土斜拉桥线形控制及影响参数研究  

Research on Linear Control and Infl uencing Parameter of Prestressed Concrete Cable-stayed Bridge with Central Cable Plane

作　　者：肖云华 钟开建 何驰 XIAO Yunhua;ZHONG Kaijian;HE Chi(China Railway No.5 Engineering Group Co.,Ltd.,Changsha 410114,Hunan,China;China Railway No.5 Bureau Group Mechanization Engineering Co.,Ltd.,Hengyang 421010,Hunan,China)

机构地区：[1]中铁五局集团有限公司,湖南长沙410114 [2]中铁五局集团机械化工程有限责任公司,湖南衡阳421010

出　　处：《工程技术研究》2024年第9期28-30,共3页Engineering and Technological Research

摘　　要：文章以张家界市某桥工程为例,结合实际工程应用,对中央索面预应力混凝土斜拉桥的线形控制及影响参数进行研究。通过有限元分析得出索力值,对索力采用二次张拉的线性控制进行分配,对线形控制的实施和优化方案进行讨论。结果表明,二次张拉的线性控制能提高索面刚度,增强桥梁的线形稳定性和安全性能。Taking a bridge project in Zhangjiajie as an example,this paper studies the linear control and influencing parameters of prestressed concrete cable-stayed bridge with central cable plane in combination with practical engineering application.The cable force value is obtained byfinite element analysis,and the cable force is distributed by linear control with secondary tensioning.The implementation and optimization scheme of linear control are discussed.The results show that the linear control of the secondary tensioning can improve the stiffness of the cable plane and enhance the linear stability and safety performance of the bridge.

关 键 词：斜拉桥 有限元分析 二次张拉 索面刚度 

分 类 号：U445[建筑科学—桥梁与隧道工程]