斜跨钢箱拱桥吊索张拉施工控制技术  

Construction Control Technology of Cable Tension for Diagonal Span Steel Box Arch Bridge

作　　者：苏昱晟 SU Yusheng(Jiangsu Huning Steel Structure&Machinery Co.,Ltd.Shanghai Branch,Shanghai 200002,China)

机构地区：[1]江苏沪宁钢机股份有限公司上海分公司,上海200002

出　　处：《建筑施工》2020年第5期807-809,共3页Building Construction

摘　　要：以某斜跨钢箱拱桥为例,对斜跨钢箱拱桥吊索张拉力控制技术进行了详细介绍。通过采用Midas有限元软件计算吊索初拉力值,采用振动频率法进行索力监测,基于索力实测数据分析计算,制定二次调索方案等,解决了斜跨钢箱拱桥吊索力难以控制的难题,使得成桥后的吊索力偏差满足规范要求,亦为类似工程积累了实践经验。Taking a diagonal span steel box arch bridge as an example,the control technology of its cable tension is introduced in detail.By using finite element sotware Midas to calculate the initial tension value of the cable,using vibration frequency method to monitor the cable tension,and making the secondary cable adjustment scheme based on the analysis and calculation of the measured data of cable tension,the problem of difficult control of the cable tension of the diagonal span steel box arch bridge is solved,so that the cable tension deviation after the completion of the bridge meets the requirements of the specificationand also has accumulated the practical experience for similar projects.

关 键 词：斜跨钢箱拱桥 吊索张拉 有限元仿真 初拉力 索力监测 二次调索 

分 类 号：TU99[建筑科学—市政工程]