基于ADINA的深基坑土钉支护在正常及地震作用下的弹塑性三维有限元分析
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摘要
应用非线性有限元软件ADINA对土钉支护的变形性能进行分析,阐述了土钉支护有限元数值模拟的特点和作用机理,考虑了土体的弹塑性特性、土钉与土体的相互作用以及分步施工过程,并结合具体工程实例进行了数值模拟。结果表明,土钉在土钉墙复合土体中具有分担作用、应力传递与扩散作用、变形的约束作用;同时模拟了土钉墙在地震荷载作用下的反应加速度、实时动位移,探讨了土钉墙产生滑移、沉降及倾斜的原因。分析结果既为工程设计施工提供了可靠数据,也验证了ADINA软件在土工分析方面的优势。
This text application a software of nonlinear finite element analysis ADINA pay to protect to the soil of transform the function to carry on the analysis.Elaborating the soil nails to pay the characteristics and the function mechanisms of protect a number emulations,considered the soil body to play the characteristic of elastoplastic numerical,soil nail with the soil body of interaction and cent tread the construction process,and combine the solid example of concrete engineering carried on the number to imitate,the result enunciation,The soil nail have the function of share in the wall compound soil body in the soil,should the dint deliver with the proliferation function,transform of stipulation function.Imitated the soil to nail the wall at the same time at the earthquake lotus carries the function under of reaction acceleration,solid move to move,inquiry into the soil to nail the wall creation to slip to move,sink to decline and slant reason.Analyze the result since designed the construction to provide the dependable data for the engineering,also verified the software of ADINA to analyze the advantage of the aspect in the soil work.
This text application a software of nonlinear finite element analysis ADINA pay to protect to the soil of transform the function to carry on the analysis.Elaborating the soil nails to pay the characteristics and the function mechanisms of protect a number emulations,considered the soil body to play the characteristic of elastoplastic numerical,soil nail with the soil body of interaction and cent tread the construction process,and combine the solid example of concrete engineering carried on the number to imitate,the result enunciation,The soil nail have the function of share in the wall compound soil body in the soil,should the dint deliver with the proliferation function,transform of stipulation function.Imitated the soil to nail the wall at the same time at the earthquake lotus carries the function under of reaction acceleration,solid move to move,inquiry into the soil to nail the wall creation to slip to move,sink to decline and slant reason.Analyze the result since designed the construction to provide the dependable data for the engineering,also verified the software of ADINA to analyze the advantage of the aspect in the soil work.
引文
[1]秦四清,王建党.土钉支护机理与优化设计[M].北京:地质出版社,1999.
[2]CECS96:97基坑土钉支护技术规程[S].
[3]JGJ120-99建筑基坑支护技术规程[S].
[4]Shen C K,Bang S and Herman LR.G round movement analysis ofearth support system.J.Geotech.Eng.Division,ASCE,1981,107(12):1609-1623.
[5]Tabrizi S K.3-D finite element modeling of soil-nailed walls:dis-sertation.The State University of New Jersey:New Brunswick,New Jersey,1996.
[6]Smith I M and Su N Three-dimensiona F E analysis of a nailedsoil wall curved in plan.Int.J.Numer.Anal.Meth.Geomech1,1997,21:583-597.
[7]王进.高层建筑深基坑开挖三维弹性弹塑性有限元分析[D].西安:西安建筑科技大学,2001.
[8]胡孔国,吴京,宋启根.深基坑开挖和支护全过程分析的弹塑性有限元法[J].建筑结构,1999,29(3):34-36.
[9]杨文侠,王松泉,朱彦鹏.土钉支护技术在黄土地区深基坑支护中的应用[J].甘肃科学学报,2003,(4).
[10]朱彦鹏,王秀丽,张贵文,等.兰州中广大厦超长深基坑支挡的设计、施工与实验监测[J].工程力学(增刊),2002.
[2]CECS96:97基坑土钉支护技术规程[S].
[3]JGJ120-99建筑基坑支护技术规程[S].
[4]Shen C K,Bang S and Herman LR.G round movement analysis ofearth support system.J.Geotech.Eng.Division,ASCE,1981,107(12):1609-1623.
[5]Tabrizi S K.3-D finite element modeling of soil-nailed walls:dis-sertation.The State University of New Jersey:New Brunswick,New Jersey,1996.
[6]Smith I M and Su N Three-dimensiona F E analysis of a nailedsoil wall curved in plan.Int.J.Numer.Anal.Meth.Geomech1,1997,21:583-597.
[7]王进.高层建筑深基坑开挖三维弹性弹塑性有限元分析[D].西安:西安建筑科技大学,2001.
[8]胡孔国,吴京,宋启根.深基坑开挖和支护全过程分析的弹塑性有限元法[J].建筑结构,1999,29(3):34-36.
[9]杨文侠,王松泉,朱彦鹏.土钉支护技术在黄土地区深基坑支护中的应用[J].甘肃科学学报,2003,(4).
[10]朱彦鹏,王秀丽,张贵文,等.兰州中广大厦超长深基坑支挡的设计、施工与实验监测[J].工程力学(增刊),2002.
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