| 深基坑开挖对邻近大直径管线影响的优化分析 |
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| 引用本文： | 徐宏增,石磊,王振平,杨开放,徐长节. 深基坑开挖对邻近大直径管线影响的优化分析[J]. 科学技术与工程, 2021, 21(2): 714-719. DOI: 10.3969/j.issn.1671-1815.2021.02.042 |
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| 作者姓名： | 徐宏增 石磊 王振平 杨开放 徐长节 |
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| 作者单位： | 宏润建设集团股份有限公司,上海200235;宏润建设集团股份有限公司,上海200235;宏润建设集团股份有限公司,上海200235;浙江大学滨海和城市岩土工程研究中心,杭州310058;浙江大学滨海和城市岩土工程研究中心,杭州310058;华东交通大学,江西省岩土工程基础设施安全与控制重点实验室,南昌330013 |
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| 基金项目： | 国家杰出青年科学基金(51725802)；国家自然科学基金资助项目(51878276)；浙江省基金-华东院联合基金(LHZ19E080001) |
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| 摘 要： | 为了研究由狭长型的市政管廊基坑开挖引起邻近管线沿长度方向的位移变化.以杭州管廊基坑工程为背景,运用有限元软件PLAXIS建立三维数值模型,探讨不同围护结构形式下的基坑开挖对邻近大直径污水管线的影响规律.分析得出管线的位移因近邻基坑的开挖存在时空效应,且提高基坑围护结构的刚度可以减小20％管线位移量;同一围护结构形式下两...
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| 关 键 词： | 管廊基坑 围护结构 大直径管线 位移 |
| 收稿时间： | 2020-03-13 |
| 修稿时间： | 2020-10-19 |
Optimization Analysis of the Influence of Deep Foundation Pit Excavation on Adjacent Large-diameter Pipeline |
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| Xu Hongzeng,Shi Lei,Wang Zhenping,Yang Kaifang,Xu Changjie. Optimization Analysis of the Influence of Deep Foundation Pit Excavation on Adjacent Large-diameter Pipeline[J]. Science Technology and Engineering, 2021, 21(2): 714-719. DOI: 10.3969/j.issn.1671-1815.2021.02.042 |
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| Authors: | Xu Hongzeng Shi Lei Wang Zhenping Yang Kaifang Xu Changjie |
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| Affiliation: | Hongrun Construction Group Co., Ltd.;Research Center of Coastal and Urban Geotechnical Engineering,Zhejiang University,Hangzhou |
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| Abstract: | The excavation of long-narrow municipal administration foundation pit will cause the displacement and internal force of the adjacent pipeline along the length direction.Based on some foundation pit engineering of Hangzhou Pipe Corridor, finite element software (PLAXIS 3D) was used to build three-dimensional model. Influence of the adjacent Large Diameter sewage pipeline will be discussed under different enclosure structure. Pipeline has the space-time effect of displacement due to the excavation of the adjacent foundation pit. And increasing the stiffness of enclosure structure can reduce the displacement of pipeline by at least 20%. The vertical displacement of the two pipelines under the same enclosure structure is basically the same. However, there is a big gap between the two pipelines in the horizontal displacement. The horizontal displacement of the two pipelines should be monitored respectively. The conclusions and suggestions obtained from this paper can be used as references for the similar engineering. |
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| Keywords: | enclosure structure large-diameter pipeline pipe gallery foundation pit displacement finite element |
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