| 深埋连拱隧道荷载计算方法的探讨 |
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| 引用本文： | 黎敬俊,丁文其,魏新欣.深埋连拱隧道荷载计算方法的探讨[J].隧道建设,2013,33(5):383-387. |
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| 作者姓名： | 黎敬俊 丁文其 魏新欣 |
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| 作者单位： | （1. 同济大学土木工程学院地下建筑与工程系， 上海 200092； 2. 同济大学岩土及地下工程教育部重点实验室， 上海 200092； 3.四川路桥建设股份有限公司， 四川成都 610041） |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2012AA112502);交通运输部西部交通建设科技项目(200731879980) |
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| 摘 要： | 针对现有深埋连拱隧道竖向荷载计算方法存在的问题，在JTG/T D70-2010《公路隧道设计细则》方法和双塌落拱方法的基础上推导荷载计算修正方法中附加修正系数的取值。将《细则》方法和荷载计算附加系数公式、碎裂介质解析解与申玉生方法在2车道和3车道情况下的荷载计算值进行对比分析，前两者计算结果相近，荷载计算修正公式计算简便，结果合理，应推荐使用。最后将公式应用于八字岭隧道连拱段和那沙岭隧道，进一步证明了公式的合理性。
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| 关 键 词： | 深埋连拱隧道 平衡拱 修正系数 土压力 双塌落拱法 荷载计算 |
| 收稿时间： | 2012-11-07 |
| 修稿时间： | 2013-03-18 |
Discussion on Load Calculation Methods of Deep buried Multi arch Tunnels |
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| LI Jingjun,DING Wenqi,WEI Xinxin.Discussion on Load Calculation Methods of Deep buried Multi arch Tunnels[J].Tunnel Construction,2013,33(5):383-387. |
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| Authors: | LI Jingjun DING Wenqi WEI Xinxin |
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| Institution: | （1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Sichuan Road & Bridge Construction Company, Chengdu 610041, Sichuan, China） |
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| Abstract: | In this paper, the authors point out the problems in the existing calculation methods for the vertical loads of deep buried multi arch tunnels. Based on double ground arching method and the method provided in Design Rules of Highway Tunnel, the authors get the corrected load calculation method and the value of the additional correction coefficients. Then the authors make a comparative analysis on the calculation results of vertical loads under the condition of two lane highways and three lane highways. The result obtained by the corrected load calculation method is close to that obtained by the method provided in Design Rules of Highway Tunnel. The corrected load calculation method should be recommended for future application. At last, the formula has been applied in the calculation of the loads of Baziling tunnel and Nashaling tunnel, which demonstrates that the formula is rational. |
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| Keywords: | deep buried multi arch tunnel equilibrium arch correction coefficient earth pressure double ground arching method load calculation |
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