| 根式沉井基础力学分析与施工工艺 |
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| 引用本文： | 杨光武,黄茂松,张陈蓉.根式沉井基础力学分析与施工工艺[J].桥梁建设,2011(2). |
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| 作者姓名： | 杨光武 黄茂松 张陈蓉 |
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| 作者单位： | 1. 中铁大桥勘测设计院有限公司,湖北武汉,430050
2. 同济大学地下建筑与工程系,上海,200092 |
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| 摘 要： | 为分析根式沉井基础受力机理并总结其施工工艺,对马鞍山长江大桥江心洲Z1号、Z5号、Z9号桥墩基础开展相关研究。分别建立根式沉井在竖向荷载、水平荷载及荷载组合作用下的力学模型,结合经验公式,推导出该类基础竖向、水平承载力及结构变形等的分析方法。对Z5号桥墩基础B进行受力计算,将计算结果与实测结果进行对比得出:在井壁增加根键可有效提高沉井基础的承载力。通过工程实践,确定Z1号、Z5号、Z9号桥墩基础采用以压重为主的助沉方案,根键施工按自下向上的顺序逐层进行,对称顶进。
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| 关 键 词： | 桥梁基础 根式沉井 力学分析 承载力 施工工艺 |
Mechanical Analysis and Construction Technology of Root Type Caisson Foundations |
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| YANG Guang-wu,HUANG Mao-song,ZHANG Chen-rong.Mechanical Analysis and Construction Technology of Root Type Caisson Foundations[J].Bridge Construction,2011(2). |
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| Authors: | YANG Guang-wu HUANG Mao-song ZHANG Chen-rong |
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| Institution: | YANG Guang-wu1,HUANG Mao-song2,ZHANG Chen-rong2(1.China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,China,2.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | To analyze the mechanical mechanism and to summarize the construction technology of root type caisson foundations,the relevant study of the foundations for Piers No.Z1,Z5 and Z9 of Maanshan Changjiang River Bridge in the ait of the river was made.The mechanical models for the root type caisson foundations under the action of vertical load,horizontal load and load combination were respectively established and with reference to the empirical formulae,a set of the analysis methods for vertical,horizontal load ... |
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| Keywords: | bridge foundation root type caisson mechanical analysis bearing capacity construction technology |
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