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| 考虑连续墙接头效应的软土大型盾构工作井稳定性分析 | |
| 引用本文： | 诸以悖,陈卫忠,田洪铭,曹俊杰,耿亚梅,陈培帅.考虑连续墙接头效应的软土大型盾构工作井稳定性分析[J].岩土力学,2011,32(10):2937-2943. |
| 作者姓名： | 诸以悖 陈卫忠 田洪铭 曹俊杰 耿亚梅 陈培帅 |
| 作者单位： | 1. 中交第二公路勘察设计研究院有限公司,武汉,430056 2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071;山东大学岩土与结构工程研究中心济南250061 3. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071 |
| 基金项目： | 国家自然科学基金资助(No.41072238,No.51009133,No.51004097);国家自然科学基金重大国际合作项目资助(No.50720135906) |
| 摘 要： | 基于地下连续墙分幅施工的工程实际状况,建立了连续墙不抗弯不抗剪柔性接头、抗剪不抗弯半刚性接头以及抗剪又抗弯刚性接头的力学模型。结合南京纬三路过江隧道盾构工作井地下连续墙的设计,通过数值模拟,研究了连续墙接头型式对于墙体水平位移以及支护体系受力的影响规律。研究成果表明,在做好连续墙接头防渗的前提下,采用柔性接头时墙体的水平位移较大,支护体系内力明显增高;采用半刚性接头时既可以有效地限制墙体的水平位移,又可以将墙体承担的土压力分担到临时支撑和环梁之上,降低连续墙墙体的内力;采用刚性接头时可以降低临时支撑、环梁以及内衬的内力,但连续墙墙体要能承担极大的竖向弯矩和数值相当的横向弯矩。综合考虑建议工作井采用抗剪不抗弯的半刚性接头。 |
| 关 键 词： | 盾构工作井 地下连续墙 接头模型 数值模拟 |
| 收稿时间： | 2010-04-27 |
Stability analysis of large shield working well considering effect of diaphragm wall joint |
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| CHU Yi-dun,CHEN Wei-zhong,TIAN Hong-ming,CAO Jun-jie,GENG Ya-mei,CHEN Pei-shuai.Stability analysis of large shield working well considering effect of diaphragm wall joint[J].Rock and Soil Mechanics,2011,32(10):2937-2943. | |
| Authors: | CHU Yi-dun CHEN Wei-zhong TIAN Hong-ming CAO Jun-jie GENG Ya-mei CHEN Pei-shuai |
| Institution: | 1. Second Highway Consultants Co., Ltd., China Communications Construction Company Limited, Wuhan 430056, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 3. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China |
| Abstract: | Three mechanical models of diaphragm wall joint,i.e.flexible joint without resistance to shearing and bending,relative rigid joint with resistance to shearing and absolute rigid joint with resistance to shearing and bending,are established based on different effects of transverse stress transferring.In order to choose a reasonable joint for shield working well of Nanjing Weisan-road Yangtze River tunnel,the deformation and mechanical properties of diaphragm wall are analyzed by using above models.The result... |
| Keywords: | shield working well diaphragm wall joint model numerical simulation |
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