|
|
|
| DISPLACEMENT ANALYSIS OF GEOMEMBRANE BAG WITH SAND SOIL COFFERDAM IN ZHOUSHAN UNDERSEA IMMERSED TUBE TUNNEL |
| WEI Xinjiang1，2，WANG Jinyan1，2，DING Zhi1，2，LI Daijun3，WEI Gang2 |
(1. College of Civil Engineering and Architecture，Zhejiang University，Hangzhou，Zhejiang 310058，China；
2. Zhejiang University City College，Hangzhou，Zhejiang 310015，China；3. Hangzhou Branch，China Railway Tunnel Group Co.，Ltd.，Hangzhou，Zhejiang 310030，China) |
|
|
|
|
Abstract The undersea tunnel of Zhoushan Putuo District Shenjiamen Harbor in north shore is constructed by the way of open excavation. Shenjiamen Harbor is located in shallow sea area. At the beginning of construction，sand soil cofferdam was used to cut off sea water. Monitoring data show that sand bag used in silt soil is susceptible to water erosion of sea water tidal fluctuation and water level change，which will cause large deformation. The maximum settlement and horizontal displacement are 74.1 cm and 216.6 cm，respectively. The safety factor of cofferdam calculated by Bishop method is not satisfied，adjustment of the cofferdam should be made based on field monitoring and calculation. However，when the steel pipe pile was introduced to the cofferdam，settlement and horizontal displacement are effectively controlled. The results provide a reference for the construction and design of geomembrane bag with sand soil cofferdam in deep foundation of undersea tunnel under conditions of coastal muddy land.
|
|
Received: 02 May 2013
|
|
|
|
| [1] 付海峰. 模袋固化土海上围埝建造方法及理论研究[博士学位论文][D]. 天津：天津大学，2006.(FU Haifeng. Research on the construction method of the marine cofferdams with geotextile bags filled with solidified soil[Ph. D. Thesis][D]. Tianjin：Tianjin University，2006.(in Chinese))
[2] 田庆利，李宝华，祝业浩. 大型固化土充泥模袋的研究及在天津港南疆围堰工程中的应用[J]. 中国港湾建设，2002，(4)：53–55.(TIAN Qingli，LI Baohua，ZHU Yehao. Research on large geotextile tubes containing hardened cement-soil mixture and its use in cofferdams in Nanjiang Area of Tianjin Port[J]. China Harbour Engineering，2002，(4)：53–55.(in Chinese))
[3] 郭晓刚，朱 敏. 江苏省启东市大型船坞砂土模袋围堰设计[J]. 人民长江，2011，20(2)：65–67.(GUO Xiaogang，ZHU Min. Design of cofferdam of large scale dock in Qidong City of Jiangsu Province using sand geomembrane bag[J]. Yangtze River，2011，20(2)：65–67.(in Chinese))
[4] 卢尧夫，王立忠. 深水中土工模袋砂土围堰的设计与施工[J]. 浙江水利水电专科学校学报，2002，14(3)：36–37.(LU Yaofu，WANG Lizhong. Design and construction of the geomembrane bag with sand soil cofferdam in deep water[J]. Journal of Zhejiang Water Conservancy and Hydropower College，2002，14(3)：36–37.(in Chinese))
[5] 丁友斌，陈海涛. 抛石围堰和模袋围堰在巢湖沿岸治理中的应用[J]. 华北水利水电学院学报，2011，32(1)：32–33.(DING Youbin，CHEN Haitao. Application of riprap cofferdam and bag cofferdam in the ecological environment treatment[J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power，2011，32(1)：32–33.(in Chinese))
[6] 东南大学，浙江大学，湖南大学，苏州科技学院. 土力学[M]. 北京：中国建筑工业出版社，2006：263.(Southeast University，Zhejiang University，Hunan University，Suzhou University of Science and Technology. Soil mechanics[M]. Beijing：China Architecture and Building Press，2006：263.(in Chinese))
[7] 羊 炜. 软土地基上模袋围堰稳定分析方法研究[硕士学位论文][D].广州：华南理工大学，2011.(YANG Wei. Research on the stability of the cofferdams with geotextile bags filled with sand on soft soil foundation[M. S. Thesis][D]. Guangzhou：South China University of Technology，2011.(in Chinese)) |
| [1] |
MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
|
|
|
|
2013, Vol. 32 
