圆形地下连续墙结构设计中系数取值探讨

陈富强; 杨光华; 张玉成; 姚丽娜

圆形地下连续墙结构设计中系数取值探讨 English Version

陈富强^1,2,
杨光华^1,2,3,
张玉成^1,2,
姚丽娜³

(1. 广东省水利水电科学研究院，广东广州 510610；2. 广东省岩土工程技术研究中心，广东广州 510610；3. 华南理工大学土木工程系，广东广州 510640)

详细信息

作者简介:
陈富强(1983– )，男，江西赣州人，硕士，工程师，主要从事基坑工程、地基处理及边坡工程等方面的研究与设计工作。

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- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Discussion on value of coefficient in structural design of circular diaphragm wall

(1. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China; 2.Guangdong Research Center of Geotechnical Engineering, Guangzhou 510610, China, 3.Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China)

摘要

摘要: 对圆形地下连续墙结构设计的竖向弹性地基梁法中的墙体的等效分布弹性支撑系数的影响因素和取值进行了探讨。从地下连续墙接头数量和槽段夹泥、柔性接头、半刚性接头以及刚性接头三种接头类型以及偏压作用范围方面研究了对系数的影响。研究表明：接头数量和槽段夹泥对系数的影响较小，而接头刚度和偏压范围对系数的影响较大。规程中对半刚性接头的地下连续墙还是比较合适的，但是对于刚性接头则有一定的富余，而对于柔性接头则取值偏大。建议系数的取值应该综合分析接头的受力状态，并通过适当的计算分析后进行取值。
- 基坑工程 /
- 圆形地下连续墙 /
- 环向效应 /
- 系数
Abstract: Influence factors and proper value of the equivalently distributed stiffness coefficient of diaphragm wall in the method of vertical beam on elastic foundation in the structural design of circular diaphragm wall are discussed. The influences of joint numbers of circular diaphragm wall, pit mud in groove segment, three joint types (namely, flexible joint, semi-rigid joint and rigid joint) and load bias range on are studied. The results show that joint numbers of the circular diaphragm wall and pit mud in the groove segment have little influence on , but the joint stiffness and load bias range affect it strongly. In addition, the specified value of ranging from 0.5 to 0.7 in the regulation seems to be appropriate for the diaphragm wall with semi-rigid joint, but a little surplus for the rigid joint and a little lower for the flexible joint. The proper value of should be taken through a comprehensive analysis of the stress state of the joint and appropriate calculation analysis.
- excavation engineering /
- circular diaphragm wall /
- hoop effect /
- coefficient

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参考文献(9)

[1]	顾倩燕, 朱宪辉. 超大直径圆形薄壁地下连续墙围护结构研究[J]. 地下空间与工程学报, 2005, 1(4): 534–537. (GU Qian-yan, ZHU Xian-hui, et al. Research on Self- Sustaining Retaining Stucture with Circular Thin Shell Diaphragm Wall of Super Large Diameter [J]. Chinese Journal of Underground Space and Engineering. 2005, 1(4): 534–537. (in Chinese))
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圆形地下连续墙结构设计中系数取值探讨 English Version

作者简介: 陈富强(1983– )，男，江西赣州人，硕士，工程师，主要从事基坑工程、地基处理及边坡工程等方面的研究与设计工作。

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Discussion on value of coefficient in structural design of circular diaphragm wall

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作者简介:
陈富强(1983– )，男，江西赣州人，硕士，工程师，主要从事基坑工程、地基处理及边坡工程等方面的研究与设计工作。