| 盾构隧道管片接头抗剪力学性能研究 |
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| 引用本文： | 郭瑞,何川,苏宗贤,彭志忠. 盾构隧道管片接头抗剪力学性能研究[J]. 现代隧道技术, 2011, 48(4): 72-77 |
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| 作者姓名： | 郭瑞 何川 苏宗贤 彭志忠 |
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| 作者单位： | 西南交通大学土木工程学院,成都,610031 |
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| 基金项目： | 国家973计划(课题编号2010CB732105); 国家杰出青年科学基金(项目批准号:50925830); 中央高校基本科研业务费专项资金资助(SWJTU09BR006) |
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| 摘 要： | 通过对南京长江盾构隧道环向管片接头进行的三组原型抗剪(无螺栓剪切、有螺栓逆剪和有螺栓顺剪)加载试验,分析研究了管片接头在剪力作用下的受力、变形和破坏特征,给出了管片接头混凝土接触面的静摩擦系数,得到了接头剪力主要由混凝土接触面承担、破坏形式为连接斜螺栓剪切延性破坏的结论。通过对管片结构的有限元数值模拟计算得出:接头处的剪力与轴力比小于接缝面的摩擦系数,管片不会发生相互错动,结构是稳定的。
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| 关 键 词： | 盾构隧道 管片接头 抗剪加载试验 破坏特征 |
Study of Shearing Mechanical Properties of Segment Joints of Shield Tunnels |
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| Guo Rui,He Chuan,Su Zongxian,Peng Zhizhong. Study of Shearing Mechanical Properties of Segment Joints of Shield Tunnels[J]. Modern Tunnelling Technology, 2011, 48(4): 72-77 |
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| Authors: | Guo Rui He Chuan Su Zongxian Peng Zhizhong |
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| Affiliation: | Guo Rui He Chuan Su Zongxian Peng Zhizhong(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031) |
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| Abstract: | Three sets of shear loading tests for circumferential segment joints of the Nanjing Yangtze river tunnel were carried out,including shearing without bolts,ordinal shearing with bolts,and reverse shearing with bolts.The mechanical behavior,deformations,and failure characteristics of the segment joints were investigated.The static friction coefficient of the concrete contact faces was determined.It was concluded that the shear resistance of the segment joints is mainly mobilized by the concrete contact faces ... |
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| Keywords: | Shield tunnel Segment joint Shear loading test Failure characteristics |
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