基于动力松弛原理的地下隧道工程初始应力场计算方法研究
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摘要
文章基于动力松弛法原理,研究了显式动力算法在对隧道工程进行初始应力场计算中的应用。通过与隐式算法的比较计算,指出该方法在并行计算环境下,无论在计算收敛性还是在对计算环境的依赖性等方面均有较大优势,特别适用于地下隧道工程等中、大规模计算模型的初始应力场计算。
Based on the principle of dynamic relaxation,the explicit dynamic algorithm of LS-DYNA was adopted to calculate the initial stress field of a tunnel and surrounding rock.By comparing with the implicit algorithm,the method presented in the paper is more advantageous in terms of convergence and the dependence on environment under parallel computation condition,and more suitable for the computation of initial stress field of medium and large-scale model of tunnel projects.
Based on the principle of dynamic relaxation,the explicit dynamic algorithm of LS-DYNA was adopted to calculate the initial stress field of a tunnel and surrounding rock.By comparing with the implicit algorithm,the method presented in the paper is more advantageous in terms of convergence and the dependence on environment under parallel computation condition,and more suitable for the computation of initial stress field of medium and large-scale model of tunnel projects.
引文
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[11]章慧健,仇文革.小净距城市浅埋隧道夹岩力学特征的数值模拟研究[J].现代隧道技术,2009,46(3):22～26Zhang Huijian,Qiu Wenge.Mechanical Performance of the Sandwiched Rock between Twin Shallow Tunnels[J].Modern Tun-nelling Technology,2009,46(3):22～26(in Chinese)
[2]王逢朝,夏禾,吴营.列车振动对环境及建筑物的影响分析[J].北方交通大学学报,1999,23(4):13～17Wang Fengchao,Xia He,Wu Yin.Vibration Effects of Trains on Surrounding Environments and Buildings[J].Journal of NorthernJiaotong University,1999,23(4):13～17(in Chinese)
[3]张璞,陈卫军.列车动载作用下交叠隧道动力响应数值模拟[J].岩土力学,2002,23(6):770～774Zhang Pu,Chen Weijun.Numerical Simulation of Dynamic Response of Overlap Tunnels in Close Proximity due to Train's Vibrat-ing Load[J].Rock and Soil Mechanics 2002,23(6):770～774(in Chinese)
[4]Gioda G,Swoboda G.Developments and Applications of the Numerical Analysis of Tunnels in Continuous Media[J].InternationalJournal for Numerical and Analytical Methods in Geomechanics,1999,23:1393～1405
[5]Schmitt J,Frit Sch M,Gattermann J,et al.Numerical Investigations to the Influence of Rearrangement of Ground Pressure forShield Tunneling[C].Proceedings ICOSSAR 2005,Millpress,Rotterdam:,2005:131～1322
[6]Christos Z.Karakostas,George D.Manolis.Dynamic Response of Unlined Tunnels in Soil with Random Properties[J].EngineeringStructures,2000,22:1013～1027
[7]Y.Guo,X.Jin,J.Ding.Parallel Numerical Simulation with Domain Decomposition for Seismic Response Analysis of Shield Tunnel[J].Advances in Engineering Software,2006,37:450～456
[8]赵跃堂,范斌,等.大型深埋隧道初始地应力状态的确定[J].地下空间与工程学报,2008,4(1):147～151Zhao Yuetang,Fan Bin,Liang Hui,Yu Xiaocun Determination of Initial Earth Stress of Large Deeply Buried Tunnel[J].ChineseJournal of Underground Space and Engineering,2008,4(1):147～151(in Chinese)
[9]M.Papadrakakis.A Method for the Automatic Evaluation of the Dynamic Relaxation Parameters[J].Computer Methods in AppliedMechanics and Engineering,1981,25(1):35～48
[10]郭毅之,金先龙,丁峻宏,等.沉管隧道地震响应分析中的三维接触模型与算法研究[J].应用力学学报,2006,23(1):48～52Guo Yizhi,Jin Xianlong,Ding Junhong,et al.Three-Dimensional Contact Model and Algorithm for Earthquake Response of Im-mersed Tunnel[J].Chinese Journal of Applied Mechanics,2006,23(1):48～52(in Chinese)
[11]章慧健,仇文革.小净距城市浅埋隧道夹岩力学特征的数值模拟研究[J].现代隧道技术,2009,46(3):22～26Zhang Huijian,Qiu Wenge.Mechanical Performance of the Sandwiched Rock between Twin Shallow Tunnels[J].Modern Tun-nelling Technology,2009,46(3):22～26(in Chinese)
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