复合土钉支护稳定性及内应力有限元分析
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摘要
随着城市建设的高速发展,高层、超高层建筑项目以及地下建筑工程日益增多,建筑规模不断扩大。进入90年代以来,由于建筑结构及使用上的要求,基坑开挖的深度越来越深,开挖面积也越来越大,基坑深度由原来的5m左右发展到目前的20多米之深。
由于深基坑工程的复杂性和不确定性,信息化施工成为深基坑施工全过程中必不可少的手段,它可以反馈信息,以便及时修改设计方案中的不足之处,并及时采取补救措施。
本文主要论述土钉支护的发展及其研究应用状况。对复合土钉支护作用的承载机理、稳定性分析计算作比较综合的初步论述。以北京某一实际工程为实例,采用有限元法对预应力锚杆(索)复合土钉支护形式进行数值模拟,主要研究其力学性能、基坑的变形、锚杆受力状态和轴力分布规律等。并结合此工程的监测结果,对有限元分析的结果作比较,验证理论分析的合理性。
与实测的结果比较表明,采用的ansys软件对预应力锚杆(索)复合土钉支护形式进行数值模拟的基坑变形与实测结果基本吻合,说明对实际工程的有限元分析是可行的,分析结果是有效的,为今后的工作提供了理论依据及设计参考。
Along with the urban construction high speed development, high level,the extra-high building project increase day by day, and the construction scale expands too. Since has entered for the 90's, because inconstruction structure and use request, structure excavation depth turns more and more deep, excavates the area more and more to be also big,the excavated for building foundation depth develops the present more than 20 meters depth from original 5m about.
Due to the complexity and uncertainty of deep excavation,Information Construction of the whole construction process into deep excavation, which are indispensable tool, which can feedback. to the timely design deficiencies, and to take timely remedial measures.
My paper discusses the development and study of soil nails Support application. Supporting the role of composite soil nailing bearing mechanism, Stability analysis for a more integrated preliminary exposition. In Beijing, as a practical example, valuesimulation using the finite element method of pre-stressed anchor composite soil nailing supporting form valuesimulation in order to study of major mechanical properties, deformation of excavation, and the rule of the axial force. Combined with this project on the monitoring results of the finite element analysis results, the theoretical analysis was reasonable.
Indicated with the actual result comparison, the result of valuesimulation to the pre-stressed anchor which one of composite soil nailing forms shows the distortion of excavation basicallytallies to the actual result.The finite element analysis result is effective and feasible.It has provided the theorybasis and the design reference for the next work.
由于深基坑工程的复杂性和不确定性,信息化施工成为深基坑施工全过程中必不可少的手段,它可以反馈信息,以便及时修改设计方案中的不足之处,并及时采取补救措施。
本文主要论述土钉支护的发展及其研究应用状况。对复合土钉支护作用的承载机理、稳定性分析计算作比较综合的初步论述。以北京某一实际工程为实例,采用有限元法对预应力锚杆(索)复合土钉支护形式进行数值模拟,主要研究其力学性能、基坑的变形、锚杆受力状态和轴力分布规律等。并结合此工程的监测结果,对有限元分析的结果作比较,验证理论分析的合理性。
与实测的结果比较表明,采用的ansys软件对预应力锚杆(索)复合土钉支护形式进行数值模拟的基坑变形与实测结果基本吻合,说明对实际工程的有限元分析是可行的,分析结果是有效的,为今后的工作提供了理论依据及设计参考。
Along with the urban construction high speed development, high level,the extra-high building project increase day by day, and the construction scale expands too. Since has entered for the 90's, because inconstruction structure and use request, structure excavation depth turns more and more deep, excavates the area more and more to be also big,the excavated for building foundation depth develops the present more than 20 meters depth from original 5m about.
Due to the complexity and uncertainty of deep excavation,Information Construction of the whole construction process into deep excavation, which are indispensable tool, which can feedback. to the timely design deficiencies, and to take timely remedial measures.
My paper discusses the development and study of soil nails Support application. Supporting the role of composite soil nailing bearing mechanism, Stability analysis for a more integrated preliminary exposition. In Beijing, as a practical example, valuesimulation using the finite element method of pre-stressed anchor composite soil nailing supporting form valuesimulation in order to study of major mechanical properties, deformation of excavation, and the rule of the axial force. Combined with this project on the monitoring results of the finite element analysis results, the theoretical analysis was reasonable.
Indicated with the actual result comparison, the result of valuesimulation to the pre-stressed anchor which one of composite soil nailing forms shows the distortion of excavation basicallytallies to the actual result.The finite element analysis result is effective and feasible.It has provided the theorybasis and the design reference for the next work.
引文
[1] Bruce,D.A;Jewell.R.A.Soil Nailing:Application and Practice,Part 1,Part 2,Ground Engineering, Vol .19,Nov,1986: Vo1.20,Jan.1987
[2] 程良奎、扬志银.喷射混凝土与土钉墙,中国建筑工业出版社,1998 年
[3] 曾宪明、曾荣生等.岩十深基坑喷锚网支护法原理·设计·施工指南,同济大学出版社,1998 年
[4] 余志成,施文华,身基坑支护设计与施工[M]。北京 中国建筑工业出版社 1999
[5] 钟正雄、杨林德:土钉挡墙技术的发展与研究,工程勘察,1999 年第 6 期
[6] Stocker, M.F., et al, Soil Nailing, Proc. Int. Conf. On Soil Reinforcement, Paris,1979
[7] Shen, C.K., etal, Field Measurement of On Earth Support System, J.Geotech. Eng., ASCE,1981
[8] Xanthakos, P.P., Abramson, j.w., Bruce, D.A., Ground Control and Improvement, JohnWiely&Sons Pub., 1994
[9] Juran, I.,Elias, V, Ground Anchors and Soil Nails in Retaining Structures, Foundation.Engineering Hanbook, Chapter 26, H. Y. Fang(Ed.), van Nostrad Beinhold Pub., 1991
[10] Bridle, D.A., Soil Nailing Analysis and Design, Ground Engineering, 1989
[11] Juran, H., etal, Kinematical Limit Analysis for Design of Soil Nailed Structures, J.Geotech.Eng.,ASCE, 1990
[12] 程良奎,张作湄,杨志银,岩十加固实用技术,地震出版社,1994
[13] 张明聚、宋二祥、陈肇元:土钉支护设计的修正条分法,工程勘察,1997年第 6 期
[14] 王宝安,史维汾,王国俊,土钉支护的稳定分析,地下空间,1997.3
[15] 罗晓辉,何立红,基坑开挖土钉墙支护稳定性的优化分析,岩土锚固新技术,中国岩土锚固工程协会,人民交通出版社,1998, 11
[16] C. K.Shen, Bang, S., etal. Ground Movement Analysis of Earth Support System, J. Geotech.Eng., ASCE, Dec. 1981
[17] Smith, I. M. Three-dimensional analysis of reinforced and nailed soil. In: Pande, Pietruszczak,eds. Numerical models in geomechanics, Balkema, Rotterdam, 1992
[18] 宋二祥,陈肇元.土钉支护的有限元分析.工程勘察,1996
[19] 宋二祥.盾构施工隧道衬砌内力内力及地表沉降计算.建筑结构,1999
[20] 胡孔国,宋启根.土钉墙作用机理的非线性分析.工业建筑,1997
[21] 张群,崔京浩.土钉支护边界位移控制法有限元分析[J].工程力学,1997(增刊)
[22] 赵国景,崔岩,无世红.土钉支护有限元计算方法研究.工程力学,2001
[23] 张明聚,陈肇元,宋二祥.深基坑土钉支护有限元分析方法及应用.工业建筑,1999
[24] 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.工程力学(增刊),1998
[25] 高印立。土钉加固边坡稳定性分析与计算[J].岩土工程技术,1998
[26] 陈进杰,贾金青,张明聚.土钉支护工作性能参数分析.岩土工程学报,2001
[27] 陈树铭,包承纲.基坑支护中土钉墙的仿真数值计算.长江科学院院报,1998
[28] 连镇营,韩国城,吕凯歌.土钉支护弹塑性数值分析及稳定性探讨.岩土力学,2002
[29] 连镇营,韩国城.土钉支护开挖过程的数值模拟分析[J].岩石力学与工程学报,2001,20(增)
[30] 杨育文,袁建新.土钉墙力学性状及其边界元法分析.城市勘测. 2000,1
[31] 陈肇元、崔京浩:土钉支护在基坑工程中的应用,中国建筑工业出版社,1997年
[32] 杜长学,钻孔注浆土钉在深基坑支护工程中的应用,勘察技术,中国有色金属工业长沙勘察院,1997
[33] 李益民,土钉墙技术在深基坑中的应用,勘察技术,中国有色金属工业长沙勘察院,1997,3
[34] 彭元生,长沙地区深基坑工程中土钉支护技术应用浅析,勘察技术,中国有色金属工业长沙勘察院,1997, 3
[35] 沙礼,土钉墙在长沙市郊区政府人楼深基坑支护中的应用,勘察技术,中国有色金属工业长沙勘察院,1997, 3
[36] 欧阳仲春:现代土钉加筋技术,人民交通出版社,1991 年
[37] Byrne, R. J., Walkingshaw, J. L. FHWA International Scanning Tour for Geotechnology, September-Octomber 1992, FHWA/PL93/020, June 1993
[38] Scientific Committee of the French National Project CLOUTERRE (President: R Schlosser)Recommendations CLOUTERRE 1991 for Designing, Calculating, Constructing and Inspecting Earth Support Systems Using Soil Nailing, FHWA/SA-93/026, 1993
[39] 李大勇、干斌:土钉墙支护技术的研究现状,西部探矿工程,2001 年第 5期
[40] 姜振泉,张京,钢筋插筋土中的钢筋的抗剪作用,岩土工程学报,1996, 18 (2)
[41] 叶书麟,韩杰,叶观宝编著.地基处理与托换技术.北京:中国建筑工业出版社,1994:
[42] 俞季民,邹勇.土钉支护结构模型试验研究.土工基础,1998,12
[43] 莫暖娇,何之民,陈利洲.土钉墙模型试验分析.上海地质,1999,3
[44] 陈福全,马时东.土钉加固边坡的离心模型试验与分析.工业建筑.1999,29(9)
[45] 陈树铭,包承纲.土钉墙技术的离心机实验研究.长江科学院院报,1997,14(2):
[46] Schlosser, F. Behavior and Design of Soil Nailing, Proc. Of Symposium on Recent Developments in Ground Improvement Techniques. Bangkok, nov.29, 1982
[47] 刘晓红 复合土钉支护构型及其内部稳定性探讨 西部探矿工程 2006
[48] 郑颖人 地下工程锚喷支护设计指南 中国铁道出版社 1988
[49] 程良奎、刘启琛 岩土锚固技术的应用与发展 万国学术出版社 1996
[50] 钱家欢、殷宗泽,土工原理与计算,中国水利水电出版社(第二版),1996
[51] 赵永伦 土钉支护的工作性能分析及稳定性计算程序的研制 同济大学申请硕士学位论文,1999
[52] 孙慕群、符向前 土坡稳定可靠度分析中若干规律的探讨 岩土工程技术,2000
[53] 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
[54] 杨亚洲,深基坑弹塑性有限元数值分析及支护优化设计方法研究[D],大连:大连理工大学硕士学位论文,2001
[55] 张明聚,土钉支护工作性能研究[D]。北京:清华大学博士学位论文,2000
[56] 朱百里,沈珠江。计算土力学[M]。上海,上海科学技术出版社,1990
[2] 程良奎、扬志银.喷射混凝土与土钉墙,中国建筑工业出版社,1998 年
[3] 曾宪明、曾荣生等.岩十深基坑喷锚网支护法原理·设计·施工指南,同济大学出版社,1998 年
[4] 余志成,施文华,身基坑支护设计与施工[M]。北京 中国建筑工业出版社 1999
[5] 钟正雄、杨林德:土钉挡墙技术的发展与研究,工程勘察,1999 年第 6 期
[6] Stocker, M.F., et al, Soil Nailing, Proc. Int. Conf. On Soil Reinforcement, Paris,1979
[7] Shen, C.K., etal, Field Measurement of On Earth Support System, J.Geotech. Eng., ASCE,1981
[8] Xanthakos, P.P., Abramson, j.w., Bruce, D.A., Ground Control and Improvement, JohnWiely&Sons Pub., 1994
[9] Juran, I.,Elias, V, Ground Anchors and Soil Nails in Retaining Structures, Foundation.Engineering Hanbook, Chapter 26, H. Y. Fang(Ed.), van Nostrad Beinhold Pub., 1991
[10] Bridle, D.A., Soil Nailing Analysis and Design, Ground Engineering, 1989
[11] Juran, H., etal, Kinematical Limit Analysis for Design of Soil Nailed Structures, J.Geotech.Eng.,ASCE, 1990
[12] 程良奎,张作湄,杨志银,岩十加固实用技术,地震出版社,1994
[13] 张明聚、宋二祥、陈肇元:土钉支护设计的修正条分法,工程勘察,1997年第 6 期
[14] 王宝安,史维汾,王国俊,土钉支护的稳定分析,地下空间,1997.3
[15] 罗晓辉,何立红,基坑开挖土钉墙支护稳定性的优化分析,岩土锚固新技术,中国岩土锚固工程协会,人民交通出版社,1998, 11
[16] C. K.Shen, Bang, S., etal. Ground Movement Analysis of Earth Support System, J. Geotech.Eng., ASCE, Dec. 1981
[17] Smith, I. M. Three-dimensional analysis of reinforced and nailed soil. In: Pande, Pietruszczak,eds. Numerical models in geomechanics, Balkema, Rotterdam, 1992
[18] 宋二祥,陈肇元.土钉支护的有限元分析.工程勘察,1996
[19] 宋二祥.盾构施工隧道衬砌内力内力及地表沉降计算.建筑结构,1999
[20] 胡孔国,宋启根.土钉墙作用机理的非线性分析.工业建筑,1997
[21] 张群,崔京浩.土钉支护边界位移控制法有限元分析[J].工程力学,1997(增刊)
[22] 赵国景,崔岩,无世红.土钉支护有限元计算方法研究.工程力学,2001
[23] 张明聚,陈肇元,宋二祥.深基坑土钉支护有限元分析方法及应用.工业建筑,1999
[24] 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.工程力学(增刊),1998
[25] 高印立。土钉加固边坡稳定性分析与计算[J].岩土工程技术,1998
[26] 陈进杰,贾金青,张明聚.土钉支护工作性能参数分析.岩土工程学报,2001
[27] 陈树铭,包承纲.基坑支护中土钉墙的仿真数值计算.长江科学院院报,1998
[28] 连镇营,韩国城,吕凯歌.土钉支护弹塑性数值分析及稳定性探讨.岩土力学,2002
[29] 连镇营,韩国城.土钉支护开挖过程的数值模拟分析[J].岩石力学与工程学报,2001,20(增)
[30] 杨育文,袁建新.土钉墙力学性状及其边界元法分析.城市勘测. 2000,1
[31] 陈肇元、崔京浩:土钉支护在基坑工程中的应用,中国建筑工业出版社,1997年
[32] 杜长学,钻孔注浆土钉在深基坑支护工程中的应用,勘察技术,中国有色金属工业长沙勘察院,1997
[33] 李益民,土钉墙技术在深基坑中的应用,勘察技术,中国有色金属工业长沙勘察院,1997,3
[34] 彭元生,长沙地区深基坑工程中土钉支护技术应用浅析,勘察技术,中国有色金属工业长沙勘察院,1997, 3
[35] 沙礼,土钉墙在长沙市郊区政府人楼深基坑支护中的应用,勘察技术,中国有色金属工业长沙勘察院,1997, 3
[36] 欧阳仲春:现代土钉加筋技术,人民交通出版社,1991 年
[37] Byrne, R. J., Walkingshaw, J. L. FHWA International Scanning Tour for Geotechnology, September-Octomber 1992, FHWA/PL93/020, June 1993
[38] Scientific Committee of the French National Project CLOUTERRE (President: R Schlosser)Recommendations CLOUTERRE 1991 for Designing, Calculating, Constructing and Inspecting Earth Support Systems Using Soil Nailing, FHWA/SA-93/026, 1993
[39] 李大勇、干斌:土钉墙支护技术的研究现状,西部探矿工程,2001 年第 5期
[40] 姜振泉,张京,钢筋插筋土中的钢筋的抗剪作用,岩土工程学报,1996, 18 (2)
[41] 叶书麟,韩杰,叶观宝编著.地基处理与托换技术.北京:中国建筑工业出版社,1994:
[42] 俞季民,邹勇.土钉支护结构模型试验研究.土工基础,1998,12
[43] 莫暖娇,何之民,陈利洲.土钉墙模型试验分析.上海地质,1999,3
[44] 陈福全,马时东.土钉加固边坡的离心模型试验与分析.工业建筑.1999,29(9)
[45] 陈树铭,包承纲.土钉墙技术的离心机实验研究.长江科学院院报,1997,14(2):
[46] Schlosser, F. Behavior and Design of Soil Nailing, Proc. Of Symposium on Recent Developments in Ground Improvement Techniques. Bangkok, nov.29, 1982
[47] 刘晓红 复合土钉支护构型及其内部稳定性探讨 西部探矿工程 2006
[48] 郑颖人 地下工程锚喷支护设计指南 中国铁道出版社 1988
[49] 程良奎、刘启琛 岩土锚固技术的应用与发展 万国学术出版社 1996
[50] 钱家欢、殷宗泽,土工原理与计算,中国水利水电出版社(第二版),1996
[51] 赵永伦 土钉支护的工作性能分析及稳定性计算程序的研制 同济大学申请硕士学位论文,1999
[52] 孙慕群、符向前 土坡稳定可靠度分析中若干规律的探讨 岩土工程技术,2000
[53] 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
[54] 杨亚洲,深基坑弹塑性有限元数值分析及支护优化设计方法研究[D],大连:大连理工大学硕士学位论文,2001
[55] 张明聚,土钉支护工作性能研究[D]。北京:清华大学博士学位论文,2000
[56] 朱百里,沈珠江。计算土力学[M]。上海,上海科学技术出版社,1990