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| 邻近盾构施工中的桩基托换效果研究 | |
| 引用本文： | 周冠南,周顺华,候刚,宋天田,王春凯.邻近盾构施工中的桩基托换效果研究[J].地下空间与工程学报,2010,6(4). |
| 作者姓名： | 周冠南 周顺华 候刚 宋天田 王春凯 |
| 作者单位： | 1. 同济大学道路与交通工程教育部重点实验室,上海,201804 2. 中铁十三局集团第二工程有限公司,深圳,518083 3. 深圳市地铁有限公司,深圳,518026 |
| 摘 要： | 以成都地铁1号线盾构近距离穿越某建筑桩基工程为背景,建立有限元模型,研究盾构穿越施工和荷载转移措施对结构及桩基的影响。结果表明:盾构从桩端穿越时,有无采用梁包柱形式的桩基托换措施对隧道结构内力影响较小,但该措施能够有效减小被托换桩的最大沉降和各桩之间的不均匀沉降。桩基托换使距隧道较近的两桩轴力减小,距隧道较远的桩轴力增加,在所有桩体上均产生附加弯矩,但量值较小。建筑结构的最大弯矩发生在距隧道最远处的柱与右跨梁的刚接位置,桩基托换有效减小梁、柱的最大弯矩。监测数据表明,盾构穿越施工对桩基影响较小,桩基托换措施达到预期效果。 |
| 关 键 词： | 盾构施工 桩基托换 数值模拟 沉降 附加弯矩 |
Research on Effect of Pile Foundation Underpinning in Shield Excavation Adjacent to the Pile |
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| Zhou Guannan,Zhou Shunhua,Hou Gang,Song Tiantian,Wang Chunkai.Research on Effect of Pile Foundation Underpinning in Shield Excavation Adjacent to the Pile[J].Chinese Journal of Underground Space and Engineering,2010,6(4). | |
| Authors: | Zhou Guannan Zhou Shunhua Hou Gang Song Tiantian Wang Chunkai |
| Affiliation: | Zhou Guannan1,Zhou Shunhua1,Hou Gang2,Song Tiantian3,Wang Chunkai1 (1.Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China,2.The 2nd Engineering Co.,Ltd.of the 13th Bureau Group of China Railway,Shenzhen 518083,3.Shenzhen Metro Co.,Ltd,Shenzhen 518026,China) |
| Abstract: | Taking shield passing closely through certain building pile foundation in Chengdu metro line 1 for background,this paper discusses the influence of shield excavation and pile foundation underpinning on adjacent pile foundation and structure.The numerical model is established to simulate the response of the construction.The results show that the structural internal force of tunnel changed little whether the pile foundation underpinning in the form of beam wrapping column had been used or not,but this measure... |
| Keywords: | shield construction pile foundation underpinning numerical simulation settlement additional moment |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
