新型桩-土-撑组合支护体系工程应用研究

王杰; 李迪安; 田宝吉; 杜佐龙; 韩磊

doi:10.11779/CJGE2019S2024

新型桩-土-撑组合支护体系工程应用研究 English Version

王杰¹,
李迪安²,
田宝吉³,
杜佐龙⁴,
韩磊^1, ,

1. 中国建筑第八工程局有限公司,上海 200122;
2. 中建八局第一建设有限公司,山东济南 250000;
3. 中国建筑第八工程局有限公司青岛分公司,山东青岛266000;
4. 中国建筑第八工程局有限公司华南分公司,广东广州 510663

基金项目: 上海市青年科技英才扬帆计划资助(18YF1425000)

详细信息

作者简介:
王杰(1960— ),男,教授级高工,从事地下深基础工程和桥梁工程方面的研究与施工。E-mail: wangj1960@sina.com。

通讯作者:
韩磊，E-mail：hanleiwell@163.com

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出版历程
- 收稿日期: 2019-04-26
- 发布日期: 2019-07-19

Theoretical analysis and engineering application of new pile-soil-support system

1. China Construction Eighth Engineering Division Corp, Ltd, Shanghai 200122, China;
2. The First Company of China Eighth Engineering Ltd, Jinan 250000, China;
3. China Construction Eighth Engineering Division Corp, Ltd, Qingdao Branch, Qingdao 266000, China;
4. China Construction Eighth Engineering Division Corp, Ltd, South China Branch, Guangzhou 510663, China

摘要

摘要: 以上海某基坑工程为背景,应用Plaxis 2D有限元软件、采用土体硬化本构模型（HS）对新型桩-土-撑组合支护体系进行计算分析,得到了该组合支护体系在基坑开挖时的变形规律。计算值通过与现场实测值对比分析发现：Plaxis 2D能够较好地预测新型桩-土-撑组合支护体系实际基坑开挖的围护结构变形;钢管斜撑的存在改变了传统双排桩的变形规律,能够有效减小围护桩顶位移;基坑变形满足基坑安全和变形要求;该基坑支护体系无内支撑,不仅方便基坑开挖,而且不会因为临时支撑的施工和拆除产生大量建筑垃圾,安全经济、绿色环保,可以为软土地区的深大基坑工程提供参考。
- 桩-土-撑 /
- 深大基坑 /
- 有限元分析 /
- 现场监测
Abstract: The Plaxis 2D finite element software is used to analyze the deformation laws of a new pile-soil-support system with HS model based on a foundation pit in Shanghai. Contrastive analysis is conducted between finite element and measured values. The results show that the Plaxis 2D can predict the deformation of the new pile-soil-support system. The existence of tube-inclined brace changes the deformation laws of the traditional double-row piles and can reduce the displacement of top of the double-row piles effectively. The deformation of retaining piles of the new pile-soil-support system satisfies the safety and deformation requirements of the foundation pit. The new support system has no inner supports, and it avoids a lot of construction waste generated by the construction and demolition of temporary supports. It is safe, economic and green environmental protection, and it can provide reference for deep and large foundation pits in soft land areas.
- pile-soil-support system /
- deep and large foundation pit /
- finite element analysis /
- in-situ monitoring

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参考文献(6)

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