土钉墙在地震作用下的动力稳定性分析
摘要
针对在地震作用下土钉支护结构设计中稳定性分析不充分时易导致发生失稳破坏的问题,本文采用边坡支护结构分析与稳定性计算理论,对土钉支护结构设计及稳定性进行了分析研究。本文研究内容包括土钉墙支护结构设计、土钉墙稳定性分析和有限元分析。
研究结果表明,对于有较高抗震防震要求的土钉墙支护结构,除了进行静力稳定性分析外,还应进行动力稳定性分析。现行规范主要是针对支护结构的最终开挖深度进行了稳定性的分析,本文对支护结构的逐层开挖深度进行了稳定性分析,主要内容有:
基于Fortran语言编制程序。利用网格法确定初步拟定的土钉支护的最危险滑移面,建立静力稳定性模型,进行静力稳定性分析;采用拟静力法模拟地震作用,用网格法确定土钉支护边坡在地震作用下的最危险滑移面,建立动力稳定性模型,进行动力稳定性分析。土钉长度和直径与最危险滑移面之间是一个动态的变化过程,用编制的计算程序对支护结构进行验算,使用方便,计算快捷。
ADINA程序能够较好的模拟实际的工况,也可以用来对土钉支护结构进行理论分析。
Aiming at slope supported with soil nailing is likely to destroy in the earthquake when the stability of it not considered reasonally,the design and stability of soil nailing supporting structure have been studied in the thesis,with analysis and calculation theories of supporting structure. Main research contents include design of structure supported with soil nailing wall, stability analysis of soil nailing wall and finite element analysis of it.
The results show: soil nailing supporting structure should be reasonally designed, complied with the items of technical specifications for it.Not only static stability analysis, but also dynamic stability analysis should be done for soil nailing wall supporting structure located in the area where earthquake is likely to happen.
The programme is written by Fortran.In the thesis,the most dangerous center of circular slip surface is searched with the method of lattice, the static stability analysis model is founded and the static stability analysis is done; the seismic effect is taken into account with the quasi-static method, the most dangerous center of circular slip surface of slope supported with soil nailing wall is searched with the method of lattice, the dynamic stability analysis model is founded and the dynamic stability analysis is done.The relationship between the most dangerous center of circular slip surface and the diameter and length of soil nailing is interactional.The stability of soil nailing supporting structure is analysis with the help of the programme which is facility and efficient.
Not only the simulation of the actual construction process,but also the theoretical analysis of soil nailing supporting structure can be well done by the help of ADINA.
研究结果表明,对于有较高抗震防震要求的土钉墙支护结构,除了进行静力稳定性分析外,还应进行动力稳定性分析。现行规范主要是针对支护结构的最终开挖深度进行了稳定性的分析,本文对支护结构的逐层开挖深度进行了稳定性分析,主要内容有:
基于Fortran语言编制程序。利用网格法确定初步拟定的土钉支护的最危险滑移面,建立静力稳定性模型,进行静力稳定性分析;采用拟静力法模拟地震作用,用网格法确定土钉支护边坡在地震作用下的最危险滑移面,建立动力稳定性模型,进行动力稳定性分析。土钉长度和直径与最危险滑移面之间是一个动态的变化过程,用编制的计算程序对支护结构进行验算,使用方便,计算快捷。
ADINA程序能够较好的模拟实际的工况,也可以用来对土钉支护结构进行理论分析。
Aiming at slope supported with soil nailing is likely to destroy in the earthquake when the stability of it not considered reasonally,the design and stability of soil nailing supporting structure have been studied in the thesis,with analysis and calculation theories of supporting structure. Main research contents include design of structure supported with soil nailing wall, stability analysis of soil nailing wall and finite element analysis of it.
The results show: soil nailing supporting structure should be reasonally designed, complied with the items of technical specifications for it.Not only static stability analysis, but also dynamic stability analysis should be done for soil nailing wall supporting structure located in the area where earthquake is likely to happen.
The programme is written by Fortran.In the thesis,the most dangerous center of circular slip surface is searched with the method of lattice, the static stability analysis model is founded and the static stability analysis is done; the seismic effect is taken into account with the quasi-static method, the most dangerous center of circular slip surface of slope supported with soil nailing wall is searched with the method of lattice, the dynamic stability analysis model is founded and the dynamic stability analysis is done.The relationship between the most dangerous center of circular slip surface and the diameter and length of soil nailing is interactional.The stability of soil nailing supporting structure is analysis with the help of the programme which is facility and efficient.
Not only the simulation of the actual construction process,but also the theoretical analysis of soil nailing supporting structure can be well done by the help of ADINA.
引文
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[3]朱彦鹏,李忠.深边坡土钉支护稳定性分析方法的改进及软件开发[J].岩土工程学报,2005,(08)
[4]李海光.新型支挡结构设计与工程实例[M].北京:人民交通出版社,2004,2.
[5]陈肇元,崔京浩主编.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
[6]周龙翔.土钉在基坑和边坡支护中的应用[M].见:广东省岩石力学与工程学会编.岩石力学与工程新进展.广州:华南理工大学出版社,1996:60-67
[7]程良奎,杨志银编著.喷射混凝土与土钉墙[M].北京:中国建筑工业出版社,1998
[8]程良奎,张作媚,杨志银.岩土加固实用技术[M].北京:地震出版社,1994
[9]程良奎,范景伦.土钉墙技术的研究与应用[M].见:中国岩土锚固工程协会编.岩土锚固工程技术.北京:人民交通出版社,1996:2127
[10]叶书麟,韩杰,叶观宝编著.地基处理与托换技术[M].北京:中国建筑工业出版社,1994:484-514
[11]李红,魏晔.土钉支护技术及其应用[J].山东工业大学学报,1999,29(3):291-295
[12]中国工程建设标准化协会标准.基坑土钉支护技术规程[S].北京:中国建筑工业出版社,1994
[13]龚晓南,高有潮.深基坑工程设计施工手册[M].北京:中国建筑工业出版社,1999
[14]武亚军,卢文阁,栗茂田,候仰杰.深基坑支护结构优化设计探讨[J].建筑结构,2000,(11)
[15]Schlosser,F.&Unerreiner,P.French Research Program Clouterre on soil Nailing.Getechnical Special Publication,ASCE 1992,30(2):739-749
[16]孔宪宾,任青文.土钉墙技术及其发展[J].水利水电科技进展,2000,20(2):24-27
[17]杨志银.土钉支护技术中的新发展[A].岩土锚固协会论文集.中国建筑工业出版社,1996
[18]Scientic Committee of the French National Project CLOUTERRE Recommendations CLOUTERRE for Designing,Calculationg,Construction and Inspecting Earth Support Systems Using Soil Nailing,FHWA/SA—93/026,1993
[19]王步云,高顺峰.土钉支护技术在边坡稳定中的应用[J].煤矿设计,1990,10:35-40
[20]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,1995,5
[21]胡建林.深基坑土钉支护中的几个问题[J].工业建筑,1999,29(4):49-52
[22]朱彦鹏,周勇.黄土边坡框架预应力锚杆支挡结构的设计计算[A].第十三届全国结构工程学术会议论文集,1999,15(2):
[23]金亚兵.土钉墙在深厚淤泥质土层边坡支护中的应用[J].中国地质灾害与防治学报,1995.9:286-294
[24]陈树铭,包承纲.土钉墙技术的离心机实验研究[J].长沙科学院院报,1996,14(2):41-43
[25]曹国安,张鸿儒,张清.南昆线膨胀土土钉挡墙试验研究[J].北方交通大学学报,1997,21(4):395-398
[26]Schlosser F.The mufti-criteria theory in soil nailing[J],Ground Engineering,November.1991
[27]Juran H&Baudrand G Kinematical Limit Analysis for Design of Soil Nailed Structures[J].Geotech.Engr.,ASCE,1991,116(1)
[28]程良奎,范景伦,韩军,许建平著.岩土锚固[M].北京:中国建筑工业出版社,2003.
[29]Jewell R.A.,Pedley M.J.Discussion[J].Ground Engineering.November,1991
[30]Jewell R.A.,Pedley M.J.Soil nailing design:the role of bending stiffness[J].GroundEngineering.March,1990
[31]Schlosser F.Behavior and Design of Soil Nailing[J].Symposium on RecentDevelopments in Ground Improvement Techniques.1982
[32]Schlosser F.Behavior of Reinforced Earth Retaining Walls from Model studies.Developments in Soil Mechanics and Foundation Engineering Model Studies[J].Applied Science Publishers.1983
[33]Schlosser F.Buhan P.DE.,Theory and design related to the performance ofreinforced soil structures,performance of reinforced soil structures[J],BritishGeo-technical Society,1990
[34]Shen C K,Bang S,Herrman L R.Ground movement analysis of an earth support system[J].GeotechEng.Division,ASCE,1981,107(12):1609-1623
[35]Tabrizi S K.3-D finite element modeling of soil-nailed walls[J]:dissertation.The State University of New Jersey:New Brunswick.New Jersey,1996.
[36]崔岩,张鑫.深基坑土钉支护的有限元分析[J].工程力学,1996,(2).
[37]宋二祥.土钉支护及其有限元分析[J].工程勘察,1996,(2).
[38]Smith I M and Su N.Three-dimensional FE analysis of a nailed soil wall curved in plan[J].Int.J.Numer.Anal.Meth.Geomech,1997,21:583-597
[39]Zhang Mingju,Song Erxiang,Chen Zhaoyuan.Ground movement analysis of Soilnailing construction by three-dimensional(3-D)finite element modeling (FEM)[J].Computers and Geotechnics 1999,25(4):191-204
[40]张明聚,宋二祥,陈肇元,崔京浩.土钉支护三维非线性有限元分析[J].工程力学,1998,增刊(3):341-346.
[41]张明聚.土钉支护工作性能研究.[博士学位论文D].北京:清华大学,2000.
[42]李象范,徐水根.复合型土钉挡墙的研究[J].上海地质.1999(3).1-11.
[43]廖雄华,王蕾笑,张克绪,胡庆立.土体非线弹性-塑性本构模型[J].岩土力学,2002,(1).
[44]钱家欢,殷宗则.土工原理与计算(第二版)[M].北京:中国水利出版社,1995.
[45]欧阳仲春.现代土工加筋技术[M].人民交通出版社,1991.
[46]李忠,黄土地区深基坑支护结构分析及其设计软件开发[D].兰州理工大学硕士学位论文.2004,6.
[47]陈肇元,崔京浩.土钉支护在基坑工程中的应用(第2版)[M].北京:中国建筑工业出版社,2000.12.
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