| 独塔四索面空间异型斜拉桥的施工监控计算 |
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| 引用本文： | 郑平伟,陈金州,于德伟.独塔四索面空间异型斜拉桥的施工监控计算[J].桥梁建设,2011(2). |
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| 作者姓名： | 郑平伟 陈金州 于德伟 |
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| 作者单位： | 中铁大桥局集团桥科院有限公司,湖北武汉,430034 |
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| 摘 要： | 宁波外滩大桥主桥采用独塔四索面空间异型斜拉桥结构,跨径布置为(225+82+30)m。为确保该桥施工安全,通过对结构受力模式的分析,明确了前塔柱竖拼竖转法施工、桥塔的弯矩、后锚点的安全及主梁行车舒适性是控制的重点。采用MIDAS Civil仿真该桥施工全过程,计算结果表明,该桥桥塔、主梁、斜拉索及后锚点在整个施工过程中均满足规范要求,且均存在一定的安全储备。通过监控参数对主梁竖向变形幅度的敏感性分析,确定施工监控时以控制斜拉索索力为主的原则。
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| 关 键 词： | 斜拉桥 有限元法 桥梁施工 施工监控 |
Calculation of Construction Monitoring and Control of a Spatial Irregular Shape Cable-Stayed Bridge with a Single Pylon and Four Cable Planes |
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| ZHENG Ping-wei,CHEN Jin-zhou,YU De-wei.Calculation of Construction Monitoring and Control of a Spatial Irregular Shape Cable-Stayed Bridge with a Single Pylon and Four Cable Planes[J].Bridge Construction,2011(2). |
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| Authors: | ZHENG Ping-wei CHEN Jin-zhou YU De-wei |
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| Institution: | ZHENG Ping-wei,CHEN Jin-zhou,YU De-wei(Bridge Science Research Institute Ltd.,China Railway Major Bridge Engineering Group,Wuhan 430034,China) |
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| Abstract: | The main bridge of the Waitan Bridge in Ningbo is a spatial irregular shape cable-stayed bridge with a single pylon and four cable planes and with span arrangement(225+82+30) m.To ensure the construction safety of the bridge,through the analysis of mechanical behavior modes of the structure,it was determined that the front legs of the pylon would be constructed by the method of vertical assembling and vertical rotation,the bending moment in the pylon,the safety of the rear anchor points and the riding comfo... |
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| Keywords: | cable-stayed bridge finite element method bridge construction construction monitoring and control |
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