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地下工程围岩稳定性的非线性强度评价指标

DOI: 10.3969/j.issn.1674-0696.2015.02.07, PP. 28-32

Keywords: 岩土工程,围岩稳定性,屈服评价指标,Hoek-Brown准则,geotechnicalengineering,stabilityofsurroundingrock,yieldindex(YI),Hoek-Browncriterion

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Abstract:

:？通过分析Mohr-Coulomb和Drucker-Prager屈服准则现有的围岩屈服评价指标，提出了以I1，J2为基准的屈服评价指标。在线性屈服准则中两者是等价的，在非线性强度准则中，以I1为基准的屈服评价指标较小，建议采用以J2为基准的屈服评价指标。对于以J2为基准的广义Hoek-Brown准则的求解存在着数学上的困难，将其转换为等效强度参数代入Mohr-Coulomb准则屈服评价指标表达式，进而对围岩稳定性进行屈服评价。算例分析表明:隧道开挖支护后的等效塑性应变和屈服评价指标规律一致，验证了该屈服评价指标的正确性;隧道屈服评价指标可以直观的显示隧道应力集中程度及围岩安全状态的演绎规律，能够更准确的描述围岩受力状态。

 References

[1]  潘昌实.隧道力学数值方法[M].北京:中国铁道出版社,1995.
[2]  Pan Changshi.Numerical Analysis Method for Tunnels[M].Beijing:China Railway Publishing House,1995.
[3]  杜丽惠,黄丽清.考虑围岩蠕变特性的轴对称有限元非线性分析[J].水利学报,2001(1):85-89.
[4]  Du Lihui,Huang Liqing.The nonlinear axisymmetric finite element method for analysis of surrounding rock in consideration of creeping [J].Journal of Hydraulic Engineering,2001(1) :85-89.
[5]  沈才华,刘松玉,童立元.卵砾石土层大跨公路隧道初期支护优化研究[J].岩石力学与工程学报,2008,27(增刊1):2984-2989.
[6]  Shen Caihua,Liu Songyu,Tong Liyuan.Primary-supporting optimization for large-span road tunnels in gravel deposit layers[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(Sup1):2984-2989.
[7]  Li Shuchen,Li Shucai,Xu Bangshu.Minimum safety factor method for stability analysis of surrounding rockmass of tunnel[J].Rock and Soil Mechanics,2007,28(3):549-554.
[8]  蒋青青.基于Hoek-Brown准则点安全系数的边坡稳定性分析[J].中南大学学报:自然科学版,2009,40(3):786-790.
[9]  Wu Hengbin.Study on Construction Mechanical Characteristics and Long-Term Stability of Large Section Tunnels with Closely Spaced[D].Chongqing:Chongqing Jiaotong University,2009.
[10]  任松,姜德义,刘欣荣,等.用3D-Sigma分析岩盐溶腔围岩地应力场[J].地下空间,2003,23(4):414-416.
[11]  Ren Song,Jiang Deyi,Liu Xinrong,et al.Analysis on ground stress of rock salt cavern’s surrounding rock with 3D-Sigma[J].Underground Space,2003,23(4):414-416.
[12]  Hoek E,Carranza-Torres C,Corkum B.Hoek-Brown failure criterion-2002 edition [C]//Proc.NARMS-TAC Conference.Toronto:University of Toronto Press,2002,1:267-273.
[13]  柳群义,朱自强,钟正强,等.基于Hoek-Brown准则的隧道围岩屈服接近度分析[J].岩土力学,2009,30(8):2447-2451.
[14]  Liu Qunyi,Zhu Ziqiang,Zhong Zhengqiang,et al.Yielding approach index for surrounding rock mass of tunnel based on Hoek-Brown criterion[J].Rock and Soil Mechanics,2009,30(8):2447-2451.
[15]  张黎明,郑颖人,王在泉,等.有限元强度折减法在公路隧道中的应用探讨[J].岩土力学,2007,28(1):97-106.
[16]  Zhang Liming,Zheng Yingren,Wang Zaiquan,et al.Application of strength reduction finite element method to road tunnels[J].Rock and Soil Mechanics,2007,28(1):97-106.
[17]  杨臻,郑颖人,张红,等.岩质隧洞支护结构设计计算方法探索[J].岩土力学,2009,(增刊1):148-154.
[18]  Yang Zhen,Zheng Yingren,Zhang Hong,et al.Exporting computational method of designing the supporting structure of rock tunnel[J].Rock and Soil Mechanics,2009,(Sup1):148-154.
[19]  高峰,薛佃立.大跨偏压软弱围岩双连拱隧道施工过程研究[J].重庆交通大学学报:自然科学版,2014,33(2):30-34.
[20]  Gao Feng,Xue Dianli.Double-arch tunnel construction in large span bias weak surrounding rock[J].Journal of Chongqing Jiaotong University:Natural Science,2014,33 (2):30-34.
[21]  靳宝成.杨河隧道的变形控制标准与支护措施的关系[J].重庆交通大学学报:自然科学版,2013,32(2):224-228.
[22]  Jin Baocheng.Relationship between deformation control standard and supporting measures of yanghe tunnel[J].Journal of Chongqing Jiaotong University:Natural Science,2013,32(2):224-228.
[23]  张传庆.基于破坏接近度的岩石工程安全性评价方法的研究[D].武汉:中国科学院武汉岩土力学研究所,2006.
[24]  Zhang Chuangqing.Study on method of safety evaluation for rock engineering based on failure approach index[D].Wuhan:Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,2006.
[25]  李树忱,李术才,徐帮树.隧道围岩稳定分析的最小安全系数法[J].岩土力学,2007,28(3):549-554.
[26]  Jiang Qingqing.Stability of point safety factor of slope based on Hoek-Brown criterion[J].Journal of Central South University:Science and Technology,2009,40(3):786-790.
[27]  吴恒滨,张学富,周元辅,等.小净距大断面隧道合理净距研究[J].重庆交通大学学报:自然科学版,2010,29(1):63-68.
[28]  Wu Hengbin,Zhang Xuefu,Zhou Yuanfu,et al.Reasonable spacing of closely spaced tunnels with large cross-section[J].Journal of Chongqing Jiaotong University:Natural Science,2010,29(1):63-68.
[29]  吴恒滨.小净距大断面隧道施工力学特性及长期稳定性研究[D].重庆:重庆交通大学,2009.

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