土钉支护强度比与类粘聚力关系试验研究
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摘要
求解边坡土体的强度稳定性等问题的理论基础主要源于如朗肯、库伦土压力理论、屈斯卡、米泽斯、莫尔-库仑理论、塑性力学的极限理论等等,随土体条件的变化,一些理论又进行修正和演绎以得到对问题的更接近或更为准确的解释。鉴于此,对边坡基坑工程稳定性研究借用相应的描述参数,提出类内聚力、类破裂角等参量,寻找土钉支护的强度比与大主应力、类粘聚力、类破裂角的关系,以试验数据得到了一定土体在土钉支护下变量之间的回归公式,可以作土钉支护工程对滑裂面的预估。
The solutions of the strength and the stability of a slope are based on the theory of Rankine earth pressure,the theory of Coulomb earth pressure,Tresca,Mises,Mohr-Coulomb criterion,the theory of Limit equilibrium and so on.Some theories are revised and deduced to approach the real values of some parameters with the changing conditions of the soil.As for research of the stability of slope and pit,the corresponding parameters are borrowed to present the references of the likeness of cohesion and fracture angle,to find the relation between strength of soil nailing and the big principal stress,the likeness of cohesion and the likeness of fracture angle.The regression formula between soil nailing variables is obtained through the experimental data,which can be used to estimate slipping fracture of soil nailing support of the project.
The solutions of the strength and the stability of a slope are based on the theory of Rankine earth pressure,the theory of Coulomb earth pressure,Tresca,Mises,Mohr-Coulomb criterion,the theory of Limit equilibrium and so on.Some theories are revised and deduced to approach the real values of some parameters with the changing conditions of the soil.As for research of the stability of slope and pit,the corresponding parameters are borrowed to present the references of the likeness of cohesion and fracture angle,to find the relation between strength of soil nailing and the big principal stress,the likeness of cohesion and the likeness of fracture angle.The regression formula between soil nailing variables is obtained through the experimental data,which can be used to estimate slipping fracture of soil nailing support of the project.
引文
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[6]张常光,赵均海.对“关于‘非饱和土抗剪强度及土压力统一解’的讨论”的答复[J].岩石力学,2011,32(4):1278-1280.
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[10]喻晓今.土钉瞬态应力动力特性对比研究[J].合肥工业大学学报,2007,30(11):1505-1508.
[11]苏立君,李彦龙,殷建华.土的剪胀性及灌浆压力对土钉抗拔强度影响的数值分析[J].西安建筑科技大学学报,2011,43(4):480-485.
[12]李平,郭佳陇,高德清.基坑坑壁土钉支护技术应用研究[J].路基工程,2011(4):28-30.
[13]YU XIAOJIN.Studies of structural parameters of soil nailing support on steep slope[C]//The Second International Sympo-sium on Innovation and Sustainability of Modern Railway.Irkutsk,Russia:Irkutsk State Transport University,2010:260-269.
[14]喻晓今,余学文,张豫.数种情形下土钉的瞬态应变累积效应分析[J].华东交通大学学报,2006,23(4):1-4.
[2]李广信.高等土力学[M].北京:清华大学出版社,2004:114-174.
[3]佴磊,徐燕,代树林.边坡工程[M].北京:科学出版社,2010:64-85.
[4]董建华,朱彦鹏.地震作用下土钉支护边坡永久位移计算方法研究[J].工程力学,2011,28(10):101-110.
[5]余文龙.关于“非饱和土抗剪强度及土压力统一解”的讨论[J].岩石力学,2011,32(4):1278.
[6]张常光,赵均海.对“关于‘非饱和土抗剪强度及土压力统一解’的讨论”的答复[J].岩石力学,2011,32(4):1278-1280.
[7]陈肇元,崔京浩.土钉支护在基坑工程中的应用[M].北京:中国建筑工业出版社,1997:16-25.
[8]段立平,李海深.考虑土拱效应的土钉墙内部竖向平均应力分析[J].路基工程,2011(1):111-113.
[9]曾鲜明,林润德,易平.基坑与边坡事故警示录[M].北京:中国建筑工业出版社,1999:4-97.
[10]喻晓今.土钉瞬态应力动力特性对比研究[J].合肥工业大学学报,2007,30(11):1505-1508.
[11]苏立君,李彦龙,殷建华.土的剪胀性及灌浆压力对土钉抗拔强度影响的数值分析[J].西安建筑科技大学学报,2011,43(4):480-485.
[12]李平,郭佳陇,高德清.基坑坑壁土钉支护技术应用研究[J].路基工程,2011(4):28-30.
[13]YU XIAOJIN.Studies of structural parameters of soil nailing support on steep slope[C]//The Second International Sympo-sium on Innovation and Sustainability of Modern Railway.Irkutsk,Russia:Irkutsk State Transport University,2010:260-269.
[14]喻晓今,余学文,张豫.数种情形下土钉的瞬态应变累积效应分析[J].华东交通大学学报,2006,23(4):1-4.
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