Mechanical Characteristic Analysis of Systematic Anchor in Loess Tunnel under Drawing Force

doi:10.3969 /j.issn.1674-0696.2013.04.21

Journal of Chongqing Jiaotong University(Natural Science) ›› 2013, Vol. 32 ›› Issue (4): 633-635.DOI: 10.3969 /j.issn.1674-0696.2013.04.21

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Mechanical Characteristic Analysis of Systematic Anchor in Loess Tunnel under Drawing Force

Li Qiang¹，Su Zhongming²

1.Bureau of Construction ＆ Management for Kelan-Linxian Expressway，Lvliang 033000，Shanxi，China;2. Key Laboratory of Highway Construction ＆ Maintenance Technology in Loess Ｒegion，Ministry of Transport，Taiyuan 030006，Shanxi，China

Received:2012-08-06 Revised:2013-05-06 Online:2013-08-15 Published:2014-10-27

拉拔荷载下黄土隧道系统锚杆力学特性分析

李强¹，宿钟鸣²

1.岢临高速公路建设管理处，山西吕梁 033000;1. 黄土地区公路建设与养护技术交通行业重点实验室，山西太原 030006

作者简介:李强(1975—),男,山西长子人,高级工程师,主要从事隧道建设及高速公路管理方面的研究。E-mail:14177016@qq.com。
基金资助:
山西省交通建设科技项目( 11-2-18)

Abstract

Abstract: Based on the displacement solution of Mindlin problem，the elastic solution to the distribution of shear stress and axial force is deduced under the drawing load for mortar anchor in loess tunnel． The ultimate drawing load of systematic anchor in the sidewall is measured by means of field test based on a certain loess tunnel in Kelan-Linxian Expressway，and the forcing characteristics of the anchor are analyzed． The distribution forms of the shear stress and axial force are also discussed in different soil characteristics． The obtained results will offer the theoretical basis for the design and optimum of systematic anchor in loess tunnel，which has the guiding significance in the design and construction．

Key words: loess tunnel, systematic anchor, shear stress distribution, axial force distribution, forcing characteristics

摘要： 基于 Mindlin 问题的位移解导出了拉拔荷载作用下砂浆锚杆的剪应力分布和轴力分布的弹性解。依托岢临高速公路某黄土隧道，通过现场试验得出边墙系统锚杆的极限拉拔力，分析了拉拔荷载作用下边墙系统锚杆的受力特性; 探讨了不同土体性质下砂浆锚杆剪应力及轴力的分布形式。研究成果为黄土隧道系统锚杆的设计和优化提供了理论依据，对设计和施工具有指导意义。

关键词: 黄土隧道, 系统锚杆, 剪应力分布, 轴力分布, 受力特性

CLC Number:

U455

Li Qiang，Su Zhongming. Mechanical Characteristic Analysis of Systematic Anchor in Loess Tunnel under Drawing Force[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(4): 633-635.

李强，宿钟鸣. 拉拔荷载下黄土隧道系统锚杆力学特性分析[J]. 重庆交通大学学报（自然科学版）, 2013, 32(4): 633-635.

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Mechanical Characteristic Analysis of Systematic Anchor in Loess Tunnel under Drawing Force

拉拔荷载下黄土隧道系统锚杆力学特性分析

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