施工误差对混凝土自锚式悬索桥成桥线形影响研究

作者：梁玉雄肖健

单位：华东交通大学土木建筑学院赣州城市投资控股集团有限责任公司

摘要：混凝土自锚式悬索桥通常采用“先梁后缆”施工,施工误差等因素对成桥线形的影响存在较多不确定性。基于有限元数值仿真分析,以一座双塔5跨混凝土自锚式悬索桥为工程背景,通过参数敏感性分析对影响桥梁成桥线形的主缆及主梁初始线形安装误差、吊杆张拉误差、主缆初始线形的上下游高差误差、加劲梁材料特性误差中的重度误差等施工误差对桥梁成桥线形的影响进行研究分析,并提出针对性的预改善控制措施,以达到线形控制的目标。

关键词：悬索桥自锚式悬索桥线形施工误差参数敏感性有限元分析

作者简介：梁玉雄,博士研究生,工程师,E-mail:61194475@qq.com。
基金：江西省教育厅科学技术研究青年项目(GJJ180335，GJJ190341)。 -页码-：41-45

尊敬的用户，本篇文章需要20元，点击支付交费后阅读

限时优惠福利：领取VIP会员
全年期刊、VIP视频免费!

参考文献[1] 蔡迎春,万超,郑元勋.中国自锚式悬索桥发展综述[J].中外公路,2013,33(4):143-147.
[2] 楼庄鸿.自锚式悬索桥[J].中外公路,2002(3):50-52.
[3] 梁玉雄.混凝土自锚式悬索桥线形影响因素分析[D].西安:长安大学,2012.
[4] 张哲.混凝土自锚式悬索桥[M].北京:人民交通出版社,2005.
[5] 秦顺全.桥梁施工控制:无应力状态法理论与实践[M].北京:人民交通出版社,2007.
[6] 王艳,陈淮,李杰.大跨径PC连续刚构桥长期下挠影响因素分析[J].中外公路,2014,34(4):215-219.
[7] 交通运输部公路科学研究院.公路工程质量检验评定标准:JTG F80/1—2017[S].北京:人民交通出版社,2017.
[8] 苗通,戴杰,秦凤江,等.混凝土自锚式悬索桥施工控制[J].河南城建学院学报,2019,28(2):45-55.
[9] 钱磊.混凝土自锚式悬索桥合理成桥状态及体系转换研究[D].南京:南京理工大学,2017.
[10] 乔朋,狄谨.混凝土自锚式悬索桥施工过程中的收缩徐变效应分析及调整[J].公路,2014(2):13-17.

Influence Analysis of Construction Error for the Completed Line Shape of Concrete Self-anchored Suspension Bridge

LIANG Yuxiong XIAO Jian

(School of Civil Engineering and Architecture,East China Jiaotong University Ganzhou Urban Investment Group Co.,Ltd.)

Abstract: Usually the concrete self-anchored suspension bridge is constructed by the method of“first beam and then cable”,many uncertainties of construction error have great influence on the completed line shape of the bridge. Based on the finite element simulation analysis, this paper takes a concrete self-anchored suspension bridge with five spans as the engineering background. The parameters sensitivity of the factors affecting the line shape of the concrete self-anchored suspension bridge is analyzed,such as the initial linearity error of the main cable and main girder, the error of tension of the suspender, the error of height difference of the initial linearity of the main cable between upstream and downstream,and the error of bulk density,also some measures are given in this paper in order to achieve the goal of control the line shape of the bridge.

Keywords: suspension bridges; self-anchored suspension bridges; line shape; construction error; parameters; sensitivity; finite element analysis

863 0 0