隧道数值模拟计算边界范围研究
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摘要
本文以某高速公路隧道的开挖和支护过程为工程实例,采用有限差分法岩土分析软件Adina进行全过程模拟,旨在分析模型的边界效应对相应求解精度的影响。研究方法是在其它条件同等的情况下,采用不同的模型边界范围建模,并分别独立进行模拟求解,通过比较不同模型下同一截面的力学响应的差异,进而分析模型边界范围这一单因素对隧洞开挖数值模拟的精度影响。研究思路和结论可以为类似的数值模拟关于如何合理地选择模型边界范围提供参考,从而使模拟实现过程的时效性和精度达到较佳的统一。
Based on the excavation and support construction of a tunnel case in the freeway,the boundary selection during the numerical simulation of deformation safety in soft argillaceous shale tunnel is studied.The Adina is used to simulate the full construction process,in order to analyze the influence of boundary effect to the solution precision in modeling.Under the same condition of other factors,different model boundary areas are simulated independently.The influence of boundary areas to the precision of tunnel excavation modeling can be analyzed by comparing the mechanical responses of different models in the same section.The research methods and conclusions can be a reference for similar numerical models of how to select reasonable model boundary area,therefore the timeliness and precision can achieve a better integration in simulating process in further researches.
Based on the excavation and support construction of a tunnel case in the freeway,the boundary selection during the numerical simulation of deformation safety in soft argillaceous shale tunnel is studied.The Adina is used to simulate the full construction process,in order to analyze the influence of boundary effect to the solution precision in modeling.Under the same condition of other factors,different model boundary areas are simulated independently.The influence of boundary areas to the precision of tunnel excavation modeling can be analyzed by comparing the mechanical responses of different models in the same section.The research methods and conclusions can be a reference for similar numerical models of how to select reasonable model boundary area,therefore the timeliness and precision can achieve a better integration in simulating process in further researches.
引文
[1]尚岳全.岩体稳定和区域稳定数值模拟模型边界条件确定方法[J].岩石力学与工程学报.1999,(4):201-204.
[2]HUANG Lin-chong,XU Zhi-sheng,WANG Li-chuan.Consti-tutive equations and finite element implementation of strain lo-calization in sand deformation[J].Journal of Central SouthUniversity of Technology.2009,16(3):482-487.
[3]李力.三台阶法与CRD法对隧道围岩稳定性影响的研究[J].公路工程,2012,6:138-142.
[4]Huang Lin-chong,Xu Zhi-sheng,Zhou Cui-ying.Modelingand monitoring in a soft argillaceous shale tunnel,ActaGeotechnics.2009,4(4):273-282
[5]季大雪.盾构隧道衬砌内力计算模型比较分析[J].铁道勘测与设计,2006,(4).
[6]张端良,王剑,张云良.软弱围岩隧道变形规律与施工安全控制技术[J].公路工程,2011,2:124-128.
[7]祝彦知,冯紫良,方志.地震动下考虑各向异性土体-盾构隧道数值模拟[J].岩土力学,2005,26(5)56-62.
[8]黄林冲,徐志胜,彭立敏.基于等维灰数递补模型的软弱围岩隧道变形预测,铁道科学与工程学报,2009,6(6):13-17.
[9]冯紫良.地下洞室应力分析中的荷载计算与初始地应力场[J].岩土工程学报,1991,13(3):3-42.
[10]FENG Zi-liang.On the determination of the load causedby exca-vating opening[J].Chinese Journal ofGeotechnical Engineering,1991,13(3):36-42.
[2]HUANG Lin-chong,XU Zhi-sheng,WANG Li-chuan.Consti-tutive equations and finite element implementation of strain lo-calization in sand deformation[J].Journal of Central SouthUniversity of Technology.2009,16(3):482-487.
[3]李力.三台阶法与CRD法对隧道围岩稳定性影响的研究[J].公路工程,2012,6:138-142.
[4]Huang Lin-chong,Xu Zhi-sheng,Zhou Cui-ying.Modelingand monitoring in a soft argillaceous shale tunnel,ActaGeotechnics.2009,4(4):273-282
[5]季大雪.盾构隧道衬砌内力计算模型比较分析[J].铁道勘测与设计,2006,(4).
[6]张端良,王剑,张云良.软弱围岩隧道变形规律与施工安全控制技术[J].公路工程,2011,2:124-128.
[7]祝彦知,冯紫良,方志.地震动下考虑各向异性土体-盾构隧道数值模拟[J].岩土力学,2005,26(5)56-62.
[8]黄林冲,徐志胜,彭立敏.基于等维灰数递补模型的软弱围岩隧道变形预测,铁道科学与工程学报,2009,6(6):13-17.
[9]冯紫良.地下洞室应力分析中的荷载计算与初始地应力场[J].岩土工程学报,1991,13(3):3-42.
[10]FENG Zi-liang.On the determination of the load causedby exca-vating opening[J].Chinese Journal ofGeotechnical Engineering,1991,13(3):36-42.
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