格栅式连续墙在沉管隧道护岸工程支护中的应用

张玉成; 杨光华; 胡海英; 姚捷; 姚丽娜; 刘鹏

格栅式连续墙在沉管隧道护岸工程支护中的应用 English Version

张玉成^1,2,
杨光华^1,2,3,4,
胡海英⁵,
姚捷³,
姚丽娜⁴,
刘鹏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. 武汉大学，湖北武汉 430072；4. 华南理工大学土木与交通学院，广东广州 510640；5. 珠江水利科学研究院，广东广州 510611 )

详细信息

作者简介:
张玉成(1975– )，男，内蒙古武川县人，博士后，副研究员/级工程师，从事岩土工程方面的科研、咨询和设计。

中图分类号: TU473
计量
- 文章访问数: 958
- HTML全文浏览量: 2
- PDF下载量: 594
出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Application of grillage shaped diaphragm wall in support of revetment project of immersed tube tunnel

(1. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610,China; 2. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510610, China; 3. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China; 4. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; 5. Pearl River Water Resources Scientific Research Institute, Guangzhou 510611, China)

摘要

摘要: 在介绍常用沉管隧道基槽开挖护岸结构形式基础上，结合具体工程项目，对格栅连续墙支护结构的土压力和护岸支护结构设计进行了探讨，提出了格栅连续墙的简化计算方法，并采用简化计算法和有限元法进行了对比计算分析。对比两种方法的计算结果可知，与有限元方法相比，简化计算方法计算的弯矩偏大，位移偏小，主要是由于简化计算方法没有考虑格栅连续墙的空间效应导致弯矩偏大，且等效刚度偏大导致位移偏小；格栅连续墙由于其自身的几何形状，其墙身弯矩分布具有典型的空间特性。其中，内墙承受较大的水平弯矩，外纵墙弯矩均较小，通过对格栅连续墙弯矩分布规律的分析，可以对格栅连续墙结构的配筋进行优化设计。由于目前对格栅连续墙的受力特点和设计计算方法对其空间效应考虑较少，因此格栅连续墙结构的变形计算模式还有待进一步研究和探讨。本文对格栅式连续墙基坑的计算设计具有一定的参考和借鉴作用。
- 格栅连续墙 /
- 基坑支护 /
- 沉管隧道 /
- 空间效应
Abstract: Based on introducing the commonly used revetment retaining structures of excavated foundation trench of the immersed tube tunnel and combined with a specific project, the earth pressure and structural design of grillage shaped diaphragm wall (GSDW) are studied. A simplified method for the GSDW is proposed and it is compared with the finite element method (FEM). From the comparison, the moment calculated by the simplified method is larger than that by the FEM, and the displacement is on the contrary. The causes are the ignorance of the spatial effects of the GSDW and the relatively larger equivalent stiffness respectively. Due to the geometry of the GSDW, the distribution of the diaphragm walls has typical spatial characteristics. For example, the inner vertical wall bears a greater level of moment while the outer vertical wall bears a less one. So we can optimize the reinforcement of the GSDW through the analysis of the moment distribution laws. As for the stress characteristics and design calculation method of the GSDW, the spatial effects are seldom taken into consideration. Further discussions and more researches of the deformation method are needed. This study may provide reference for the design of the GSDW.
- grillage shaped diaphragm wall /
- excavation support /
- immersed tube tunnel /
- spatial effect

HTML全文

参考文献(10)

[1]	张玉成, 杨光华, 姚捷, 等. 基坑开挖卸荷对下方既有地铁隧道影响的数值仿真分析[J]. 岩土工程学报, 2010, 32(增刊1): 109–115. (ZHANG Yu-cheng, YANG Guang-hua, YAO Jie, et al. Numerical simulation and analysis of effect of excavation of foundation pits on metro tunnels[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 109–115. (in Chinese))
[2]	曾进群. 支撑体系对基坑支护结构变形和内力的影响分析[J]. 工业建筑, 2004(增刊2): 137–139. (ZENG Jin-qun. The influence on the displacement and internal force of retaining structure to the system of support[J]. Industry Construction, 2004(S2): 137–139. (in Chinese))
[3]	刘加峰. 重力式格形地下连续墙的槽壁稳定方法[J]. 建筑施工, 2002, 24(4): 260–262. (LIU Jia-feng. Stabilization method for trough sheeting of gravity grillage shaped underground continuous wall[J]. Building Construction, 2002, 24(4): 260–262. (in Chinese))
[4]	汪贵平, 李华梅, 费永成, 等. 格形地下墙结构在基坑工程中的应用[J]. 地下空间与工程学报, 2005, 1(4): 584–586. (WANG Gui-ping, LI Hua-mei, FEI Yong-cheng. Application of gridding concrete retaining wall in trench engineering design and construction schemes of cellular diaphragm wall[J]. Chinese Journal of Underground Space and Engineering, 2005, 1(4): 584–586. (in Chinese))
[5]	朱建明, 肖鹏, 李耀良, 等. 我国最大的船坞工程，中船长兴造船基地施工报告—不良地质条件下的格形地下连续墙施工技术[J]. 建筑施工, 2008, 30(10): 845–847. (ZHU Jian-ming, XIAO Peng, LI Yao-liang. Construction report on Changxing Shipbuilding Base of China Shipbuilding Company, the largest dock engineering in China- construction technology for grid-type slurry wall under poor geological conditions[J]. Building Construction, 2008, 30(10): 845–847. (in Chinese))
[6]	陈越. 从广州地区沉管隧道建设谈沉管隧道的建造设想[J]. 现代隧道技术, 2008, 45(1): 10–15. (CHENG Yue. On the construction of immersed tube tunnels from the experience of immersed tube tunnel practice in Guangzhou region [J]. Modern Tunnelling Technology, 2008, 45(1): 10–15. (in Chinese))
[7]	侯永茂. 软土地层中格形地下连续墙围护结构性状研究[D]. 上海: 上海交通大学, 2010 (HOU Yong-mao. Behavior of cellular diaphragm wall in soft deposit[D]. Shanghai: Shanghai Jiaotong University, 2010. (in Chinese))
[8]	杨光华. 深基坑支护结构的实用计算方法及其应用[M]. 北京: 地质出版社, 2004: 104–108. (YANG Gang-huang. The practical calculation method and appliance on the structure of retaining of building foundation excavation[M]. Beijing: The Geological Publishing House, 2004: 104–108. (in Chinese))
[9]	杨光华, 陆培炎. 深基坑开挖中考虑施工过程的多撑或多锚地下连续墙的增量计算法[J]. 建筑结构, 1994(8): 28–47. (YANG Guang-hua, LU Pei-yan. The incremental calculation method for the diaphragm wall with multi-brace or multi-anchor in deep excavation[J]. Building Structure, 1994(8): 28–47. (in Chinese))
[10]	GJB02—98 广州地区建筑基坑支护技术规定[S]. (GJB02—98 Technical specification for retaining and protection of building foundation excavation in Guangzhou area[S]. (in Chinese))