| 超大型沉井首次下沉关键问题研究 |
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| 引用本文： | 朱建民,龚维明,穆保岗,牛亚洲.超大型沉井首次下沉关键问题研究[J].公路,2011(4):13-18. |
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| 作者姓名： | 朱建民 龚维明 穆保岗 牛亚洲 |
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| 作者单位： | 1. 东南大学,南京市,210096
2. 中交第二公路工程局有限公司,西安市,710075 |
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| 摘 要： | 结合目前世界上平面尺寸最大的矩形沉井的建设,采用有限元分析和现场监控等手段.对沉井下沉方式、开挖方案、接高高度、地基承载力、下沉和稳定性间的关系进行了研究.排水下沉在施工效率和开挖可控性等方面优于不排水下沉,当有充足降水能力和对周边重要建筑物影响不大时优先采用.在结构受力方面,开挖形成的锅底越大隔墙墙底所受拉力越大;采...
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| 关 键 词： | 超大型沉井 首次下沉 开挖方案 接高高度 地基处理 稳定性 |
Bottleneck Problem Study on First Stage Sinking of Super-Large Caisson |
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| ZHU Jian-min,GONG Wei-ming,MU Bao-gang,NIU Ya-zhou.Bottleneck Problem Study on First Stage Sinking of Super-Large Caisson[J].Highway,2011(4):13-18. |
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| Authors: | ZHU Jian-min GONG Wei-ming MU Bao-gang NIU Ya-zhou |
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| Institution: | ZHU Jian-min1,GONG Wei-ming1,MU Bao-gang1,NIU Ya-zhou2(1.Southeast University,Nanjing 210096,China,2.CCCC Second Highway Engineering Co.,Ltd.,Xi'an 710075,China) |
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| Abstract: | Through construction of world's biggest rectangular caisson,the relationship among sinking method,excavation plan,building-height,ground bearing capacity,sinking difficulty and overall stability are studied by finite element analysis and on-site monitoring.Compared with non-dewater sinking,dewater sinking is superior in construction efficiency and excavation control.It's the first choice when dewater capacity is sufficient and settlement of important building nearby is small.The tensile stress of partition ... |
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| Keywords: | super-large caisson first stage sinking excavation plan building-height ground improvement stability |
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