| 南京长江隧道原型管片结构破坏试验研究 |
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| 引用本文： | 封坤,何川,苏宗贤.南京长江隧道原型管片结构破坏试验研究[J].西南交通大学学报,2011,46(4):564-571. |
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| 作者姓名： | 封坤 何川 苏宗贤 |
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| 作者单位： | 1. 西南交通大学地下工程系,四川成都,610031
2. 港珠澳大桥管理局,广东珠海,519015 |
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| 基金项目： | 国家973计划资助项目(2010CB732105); 国家杰出青年科学基金资助项目(50925830) |
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| 摘 要： | 为探明南京长江隧道管片衬砌结构的破坏特征,采用"多功能盾构隧道结构体试验系统",对其原型管片衬砌结构进行了试验研究.将结构承受的水压力与土压力分离加载,并对大型水下盾构隧道结构在通缝和错缝拼装方式下的不同破坏特征进行了探讨.研究结果表明:南京长江隧道管片衬砌的破坏主要以弯曲开裂为主;结构裂缝扩展往往伴随着结构变形和纵缝张开量的显著发展;不同拼装方式的结构变形、裂缝扩展与纵缝张开量存在较大差异,与通缝拼装管片结构相比,错缝拼装管片结构变形、纵缝张开量较小,而裂缝扩展较快.
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| 关 键 词： | 水下盾构隧道 管片衬砌结构 原型试验 破坏特征 |
Prototype Test on Failure Characteristics of Segmental Lining Structure for Nanjing Yangtze River Tunnel |
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| FENG Kun,HE Chuan,SU Zongxian.Prototype Test on Failure Characteristics of Segmental Lining Structure for Nanjing Yangtze River Tunnel[J].Journal of Southwest Jiaotong University,2011,46(4):564-571. |
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| Authors: | FENG Kun HE Chuan SU Zongxian |
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| Institution: | FENG Kun1,HE Chuan1,SU Zongxian2(1.Department of Tunnel and Underground Engineering,Southwest Jiaotong University,Chengdu 610031,China,2.Hongkong-Zhuhai-Macao Bridge Authority,Zhuhai 519015,China) |
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| Abstract: | In order to research the failure characteristics of segmental lining structure for Nanjing Yangtze River tunnel,a prototype test was carried out by using a multi-function shield tunnel structure test system.Water pressure and earth pressure were applied separately upon the prototype segmental lining structure in the test.And the failure characteristics of underwater shield tunnels under straight or staggered assembling were discussed respectively.The research results show that the damages of Nanjing Yangtze... |
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| Keywords: | underwater shield tunnel segmental lining structure prototype test failure characteristic |
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