| 黄土公路隧道受力特性测试 |
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| 引用本文： | 来弘鹏,谢永利,杨晓华.黄土公路隧道受力特性测试[J].长安大学学报(自然科学版),2005,25(6):53-56. |
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| 作者姓名： | 来弘鹏 谢永利 杨晓华 |
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| 作者单位： | 长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
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| 基金项目： | 国家西部交通建设科技项目（2001 318 000 21） |
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| 摘 要： | 为了解黄土公路隧道围岩压力及衬砌受力的特性,通过对青土岘隧道的现场测试,研究了一次衬砌和仰拱围岩压力、格栅拱架钢筋轴力、一次衬砌和二次衬砌接触压力以及仰拱和二次衬砌混凝土的应力应变随时间变化规律及分布特性.结果表明,围岩与一次衬砌接触压力分布不均匀,边墙底部表现出了较大压力,格栅拱架钢筋轴力稳定较快且全部受压,二次衬砌和仰拱承受较小的荷载.
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| 关 键 词： | 隧道工程 公路隧道 黄土 围岩压力 现场测试 衬砌 |
| 文章编号： | 1671-8879（2005）06-0053-04 |
| 收稿时间： | 2004-11-10 |
| 修稿时间： | 2004年11月10 |
Mechanical characteristic of highway tunnel in loess |
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| LAI Hong-peng,XIE Yong-li,YANG Xiao-hua.Mechanical characteristic of highway tunnel in loess[J].JOurnal of Chang’an University:Natural Science Edition,2005,25(6):53-56. |
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| Authors: | LAI Hong-peng XIE Yong-li YANG Xiao-hua |
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| Abstract: | In order to know the surrounding rock pressure and the lining mechanical characteristic of highway to know the surrounding rock pressure and the lining mechanical characteristic in loess, with a case study in field of Qingtuxian tunnel, the changing regulations of the surrounding rock pressure are presented, which acts on the first lining and invert, axial force of lattice girder,contact stress between the first and second lining, and strain of the second lining. The results show the contact stress between surrounding rock and the first lining is not symmetrical, the pressure of side wall is relatively large,axial force of the lattice girder become steady in a short time,lattice girder is all at pressure and the bearing functions of the second lining and invert are not obvious. 2 tabs, 11 figs, 8 refs. |
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| Keywords: | tunnel engineering highway tunnel loess surrounding rock pressure field measure lining |
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