基于统一强度理论的深埋圆形岩石隧道收敛限制分析

张常光; 赵均海; 张庆贺

基于统一强度理论的深埋圆形岩石隧道收敛限制分析 English Version

1. 长安大学建筑工程学院，陕西西安 710061 ； 2. 同济大学地下建筑与工程系，上海 200092

基金项目: 陕西省住房和城乡建设厅科学研究项目；陕西省自然科学基金项目（2011JM7002）

详细信息

作者简介:
张常光( 1982 – ) ，男，山东菏泽人，博士，讲师，从事地下结构和强度理论研究。

中图分类号: TU452
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出版历程
- 收稿日期: 2011-01-04
- 发布日期: 2012-01-19

Convergence - confinement analysis of deep circular rock tunnels based on unified strength theory

1. School of Civil Engineering, Chang'an University, Xi'an 710061, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China)

摘要

摘要: 基于统一强度理论和非关联流动法则，考虑中间主应力、围岩软化、剪胀和塑性区较小弹性模量等综合影响，推导了深埋圆形岩石隧道围岩特征曲线解析新解。采用较合理的 Vlachopoulos 公式确定隧道纵向位移释放系数，利用收敛限制法对比两种支护起始位置方法下支护压力的差异。研究结果表明：统一强度理论参数对围岩特征曲线和隧道纵向变形曲线的影响显著，考虑中间主应力效应可以更加充分发挥围岩的强度潜能，塑性区弹性模量和剪胀参数对围岩特征曲线的影响显著，不同支护起始位置方法确定的支护压力差异明显。
- 围岩特征曲线 /
- 隧道纵向变形曲线 /
- 支护压力 /
- 统一强度理论 /
- 中间主应力 /
- 剪胀
Abstract: Based on the unified strength theory and a non-associated flow rule , a new analytical solution for ground reaction curve of a deep circular rock tunnel is presented taking into consideration the integrated effects of the intermediate principal stress, rock softening, dilatancy and a small Young’s modulus in the plastic zone. The Vlachopoulos’s formula due to its rationality is adopted to determine the relief ratio of longitudinal deformation of the tunnel . The support pressure differences anticipated from the convergence – confinement analysis between two methods for determining the initial location of support action are discussed. The results show that the influence of the unified strength theory parameter on the ground reaction curve and longitudinal deformation profile of the tunnel is significant. The strength potentials of rock mass are better achieved due to considering the effect of the intermediate principal stress. The effects of Young’s modulus in the plastic zone and dilatancy on the ground reaction curve are important. The differences of support pressure between two methods for determining the initial location of support action are remarkable.
- ground reaction curve /
- longitudinal deformation profile of tunnel /
- support pressure /
- unified strength theory /
- intermediate principal stress /
- dilatancy

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参考文献(10)

[1]	BROWN E T, BRAY J W, LADANYI B, et al. Ground response curves for rock tunnels[J]. Journal of Geotechnical Engineering, ASCE, 1983, 1091): 15 – 39.
[2]	WANG Y. Ground response of circular tunnel in poorly consolidated rock[J]. Journal of Geotechnical Engineering, ASCE, 1996, 1229): 703 – 708.
[3]	CARRANZA–TORRES C, FAIRHURST C. Application of the convergence–confinement method of tunnel design to rock masses that satisfy the Hoek–Brown criterion[J]. Tunnelling and Underground Space Technology, 2000, 152): 187 – 213.
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[6]	BASARIR H, GENIS M, OZARSLAN A. The analysis of radial displacements occurring near the face of a circular opening in weak rock mass[J]. International Journal of Rock Mechanics and Mining Sciences, 2010, 475): 771 – 783.
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[8]	俞茂宏 . 岩土类材料的统一强度理论及其应用 [J]. 岩土工程学报 , 1994, 162): 1 – 10.YU Mao-hong. Unified strength theory for geomaterials and its applications[J]. Chinese Journal of Geotechnical Engineering, 1994, 162): 1 – 10.in Chinese))
[9]	蒋明镜 , 沈珠江 . 岩土类软化材料的柱形孔扩张统一解问题 [J]. 岩土力学 , 1996, 171): 1 – 8.JIANG Ming-jing, SHEN Zhu-jiang. Unified solution of expansion of cylindrical cavity for geometries with strain softening behaviour[J]. Rock and Soil Mechanics, 1996, 171): 1 – 8.in Chinese))
[10]	RocScience. RocLab[CP]. Rocscience Inc., Toronto, 2002.

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基于统一强度理论的深埋圆形岩石隧道收敛限制分析 English Version

作者简介: 张常光( 1982 – ) ，男，山东菏泽人，博士，讲师，从事地下结构和强度理论研究。

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Convergence - confinement analysis of deep circular rock tunnels based on unified strength theory

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作者简介:
张常光( 1982 – ) ，男，山东菏泽人，博士，讲师，从事地下结构和强度理论研究。