带支腿地下连续墙的围护效果及工程应用分析

胡安峰; 饶航; 袁静

带支腿地下连续墙的围护效果及工程应用分析 English Version

胡安峰¹,
饶航^1,2,
袁静³

(1.浙江大学软弱土与环境土工教育部重点实验室，浙江杭州 310058；2，上海市政工程设计研究总院(集团）有限公司，上海 200092；3. 浙江省建筑设计研究院，浙江杭州 310006）

详细信息

作者简介:
胡安峰(1974– )，副教授，主要从事桩基工程、基坑工程的研究工作。

中图分类号: TU476
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- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Effectiveness and engineering application of outrigger-type diaphragm walls

(1. Key Laboratory of Soft Soil and Environmental Geotechnical Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China; 2. Shanghai Municipal Engineering Design General Institute(Group) Co., Ltd., Shanghai 200092, China;3. Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

摘要

摘要: 作为一种新型围护结构形式，带支腿地下连续墙已经开始在深基坑工程中应用，但目前国内外在这个方面的研究还比较匮乏。在杭州黄龙饭店改扩建工程中，由于部分围护结构插入深度不能满足设计要求，设计中采用带支腿地下连续墙成功地解决了整幅地下连续墙不能进入中风化基岩层问题，保证了围护结构的嵌岩深度，降低了施工难度,取得了良好的社会效益和经济效益。针对该基坑工程实例，利用有限元分析软件ABAQUS，建立了单片带支腿地下连续墙作为围护结构的准三维有限元分析模型。在数值模拟中，土体采用修正剑桥模型，模拟实际开挖工况，将基坑开挖中墙体侧向位移的数值计算结果和监测数据进行了对比，分析了带支腿地下连续墙的围护效果和支腿中内插型钢的合理刚度问题。
- 支腿 /
- 地下连续墙 /
- 三维有限元法 /
- 墙体变形 /
- 内插型钢 /
- 合理刚度
Abstract: As a technique for protection of adjacent buildings, the outrigger-type diaphragm wall been applied in deep excavation engineering. But the worldwide researches in this area are still relatively scarce until now. In extension project of Hangzhou Huanglong Hotel, outrigger-type diaphragm walls are adopted to solve the problem of insufficient rock-socketed depth. And thus the rock-socketed depth of support structures in intermediary weathered rock is ensured. Moreover, the construction difficulty is reduced. Good social and economic benefits are gained. Based on the Huanglong excavation case, a 3-D finite element model is presented to simulate the behavior of outrigger-type diaphragm walls by using the software ABAQUS. The behavior of soil is assumed to conform to the modified Cam-clay model, and the actual construction sequence is simulated. The numerical results and monitoring data in the excavation of lateral displacement are compared. The reasonable stiffness of the section steel in the outrigger-type diaphragm walls is also analyzed.
- outrigger /
- diaphragm wall /
- 3-D FEM /
- wall deformation /
- interpolation type steel /
- reasonable stiffness

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参考文献(2)

[1]	黄琦, 夏继君. 带支腿的地下连续墙的设计与施工[J]. 建筑施工, 2001, 22(1): 7–9. (HUANG Qi, XIA Ji-jun. Design and construction of leg-support diaphragm wall[J]. Building Construction, 2001, 22(1): 7–9. (in Chinese))
[2]	袁静, 刘兴旺, 曹国强. 带支腿地下连续墙设计和应用[J]. 岩土工程学报, 2010, 32(增刊1): 245–248. (YUAN Jing, LIU Xing-wang, CAO Guo-qiang. Design and application of leg-supported diaphragm walls[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 245–248. (in Chinese))

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带支腿地下连续墙的围护效果及工程应用分析 English Version

作者简介: 胡安峰(1974– )，副教授，主要从事桩基工程、基坑工程的研究工作。

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出版历程

Effectiveness and engineering application of outrigger-type diaphragm walls

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出版历程

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作者简介:
胡安峰(1974– )，副教授，主要从事桩基工程、基坑工程的研究工作。