悬吊锚筋桩应用于隧洞进出口围岩加固的研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (522 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要首先对悬吊锚筋桩数值模拟方法及力学参数取值问题进行分析，然后通过对一简单悬吊锚筋桩算例进行参数敏感性分析，分析结果表明：是否考虑灌浆环的摩擦作用对计算结果的影响很大，因此在悬吊锚筋桩的数值模拟过程中合理地模拟灌浆环非常重要。最后，对糯扎渡水电站1#导流隧洞进口0+015 m剖面不同条件下隧洞的开挖支护进行数值模拟，重点分析围岩和加固措施之间的相互作用及悬吊锚筋桩对顶拱围岩变形的影响。计算结果表明：悬吊锚筋桩能够有效地控制隧洞进口段顶拱的沉降变形。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：隧道工程, 加固方法, 悬吊锚筋桩, 数值模拟, 应力变形

Abstract：Because of the stability problem of rock mass is very poor in the inlet and outlet section of tunnel，so some strong reinforcement measures should be applied；and the suspensory anchor-stake is one of these effective reinforcement methods. Firstly，the numerical simulation method and the mechanical parameters for suspensory anchor-stake are analyzed；then a simple case study for parameters sensitivity analysis of suspensory anchor-stake is carried out. The computing results show that，the results are influenced by the friction effect of grout is considered or not；so that，the rational simulation of grout is very important to the numerical simulation of suspensory anchor-stake. Finally，the numerical simulation of excavation and reinforcement of section 0+015 m of diversion tunnel #1 at the Nuozhadu hydropower station under different conditions is carried out；the interaction of rock mass and suspensory anchor-stake，the deformation of tunnel crown rock mass influenced by the suspensory anchor-stake are analyzed. The computing results show that，the subsidence deformation of tunnel crown rock mass is controlled by the suspensory anchor-stake effectively.

Key words： tunnelling engineering reinforcement method suspensory anchor-stake numerical simulation stress and deformation

收稿日期: 2011-05-25

引用本文:

周家文1，李洪涛1，刘兴宁2，周宏伟1. 悬吊锚筋桩应用于隧洞进出口围岩加固的研究[J]. 岩石力学与工程学报, 2011, 30(10): 2040-2048.
ZHOU Jiawen1，LI Hongtao1，LIU Xingning2，ZHOU Hongwei1. APPLICATION OF SUSPENSORY ANCHOR-STAKE TO REINFORCEMENT OF SURROUNDING ROCK MASS AT TUNNEL INLET AND OUTLET. , 2011, 30(10): 2040-2048.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I10/2040

[5]	ORESTE P P. Analysis of structural interaction in tunnels using the convergence-confinement approach[J]. Tunnelling and Underground Space Technology，2003，18(4)：347-363. " target="_blank">
[12]	黄子平，BROCH E，吕明. 水电站地下厂房洞室顶拱的形成与锚固[J]. 岩石力学与工程学报，2005，24(8)：1 348-1 354.(HUANG Ziping，BROCH E，LU Ming. Formation of arch and rock bolting of underground powerhouse roofs[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(8)：1 348-1 354.(in Chinese))
[15]	雷文杰，郑颖人，冯夏庭. 沉埋桩的有限元设计方法探讨[J]. 岩石力学与工程学报，2006，25(增1)：2 924-2 929.(LEI Wenjie，ZHENG Yingren，FENG Xiating. Study on finite element design methods of slope stabilized by deeply buried anti-slide piles[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.1)：2 924-2 929.(in Chinese))
[2]	OZSAN A，BASARIR H. Support capacity estimation of a diversion tunnel in weak rock[J]. Engineering Geology，2003，68(3/4)：319-331. " target="_blank">
[3]	BARTON N. Some new Q-value correlations to assist in site characterization and tunnel design[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(2)：185-216.
[4]	ORESTE P P. A numerical approach to the hyperstatic reaction method for the dimensioning of tunnel supports[J]. Tunnelling and Underground Space Technology，2007，22(2)：185-205.
[10]	邬爱清，丁秀丽，陈胜宏，等. DDA方法在复杂地质条件下地下厂房围岩变形与破坏特征分析中的应用研究[J]. 岩石力学与工程学报，2006，25(1)：1-8.(WU Aiqing，DING Xiuli，CHEN Shenghong，et al. Researches on deformation and failure characteristics of an underground powerhouse with complicated geological conditions by DDA method[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(1)：1-8.(in Chinese))
[11]	董志宏，邬爱清，丁秀丽. 数值流形方法中的锚固支护模拟及初步应用[J]. 岩石力学与工程学报，2005，24(20)：3 754-3 760.(DONG Zhihong，WU Aiqing，DING Xiuli. Rock bolts simulation by numerical manifold method and its preliminary application[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 754-3 760.(in Chinese))
[13]	PELLS P J N. Developments in the design of tunnels and caverns in the Triassic rocks of the Sydney region[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(5)：569-587.
[14]	BIZJAK K F，PETKOVSEK B. Displacement analysis of tunnel support in soft rock around a shallow highway tunnel at Golovec[J]. Engineering Geology，2004，75(1)：89-106.
[1]	HOEK E，BROWN E T. Underground excavations in rock[M]. London：Institution of Mining and Metallurgy，1980：1-213. " target="_blank">
[6]	HISATAKE M，OHNO S. Effects of pipe roof supports and the excavation method on the displacements above a tunnel face[J]. Tunnelling and Underground Space Technology，2008，23(2)：120-127.
[7]	SATO M，KANIE S，MIKAMI T. Mathematical analogy of a beam on elastic supports as a beam on elastic foundation[J]. Applied Mathematical Modelling，2008，32(5)：688-699.
[8]	张顶立. 海底隧道不良地质体及结构界面的变形控制技术[J]. 岩石力学与工程学报，2007，26(11)：2 161-2 169.(ZHANG Dingli. Deformation control techniques of unfavorable geologic bodies and discontinuous surfaces in subsea tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(11)：2 161-2 169.(in Chinese))
[9]	朱维申，孙爱花，王文涛，等. 大型洞室群高边墙位移预测和围岩稳定性判别方法[J]. 岩石力学与工程学报，2007，26(9)：1 729-1 736. (ZHU Weishen，SUN Aihua，WANG Wentao，et al. Study on predication of high wall displacement and stability judging method of surrounding rock for large cavern groups[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(9)：1 729-1 736.(in Chinese))