夯击能及夯击击数对强夯加固深度的影响
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摘要
强夯法是地基处理的一种方法。由于其施工设备简单、适用范围广泛、工程特性明显,得到了大力的推广使用。本文从强夯法的加固机理出发,综合运用力学知识和数学方法,针对强夯法存在的不足,就夯击能及夯击击数对强夯法加固深度的影响进行了深入的研究。归纳起来,本文取得了以下的一些成果与结论:
1、本文综述了强夯法的历史和现状,并分析了强夯理论的发展现状及存在的问题。
2、针对强夯法设计存在的问题,提出了强夯法优化设计的思路。并按照此思路,采用有限元软件对强夯法进行了尝试性的模拟,得出了相应的模拟公式。
3、分析研究了夯击能以及夯击数对强夯效果的影响,采用已有工程的室内试验和原位测试试验的数据,进一步探讨加固深度与夯击能和夯击次数的关系。进行了曲线拟合,得到了相应的经验公式。
4、将仿真结果与现场试验结果进行了比较,得到了:“利用Adina进行的仿真能够反映出强夯的实际情况,模拟仿真是可行的”的结论。
5、利用研究成果,指导了某一具体工程实践,通过强夯效果检测,验证了研究成果与工程实践的吻合。
As one of the ground improvement techniques, Dynamic Consolidation (DC) has been genereally accepted for its simplicity-implement and cost-effectiveness. This paper begins with the mechanism of DC, and, according to mechanics-knowledge and mathematics-method, analyses the affection of tamping energy and tamping times on depth of DC. In a word, this paper achieves the following results and conclusions.
1.This paper gives an overview of history and current situation of DC, and analyses the situation of DC mechanism and unsolved problems.
2.Aimed at the problem of DC design, this paper proposes a better DC-design way. According to this way, the paper makes an attempted simulation, and gets the relevant simulation formula, by using finite element software.
3.Analysing the affection of tamping energy and tamping times on depth of Dynamic Consolidation, using the data of laboratory and in-situ tests, this paper discusses futher relationship between depth of DC and tamping energy and tamping times. And then, the paper fits the curve, and gets the relevant experiential formula.
4.Comparing these two formulas, the paper gets the conclusion that using the Adina software can simulate DC, and this simulation is feasible.
5. We guided a specific project with the result of this research. According to the examination of the result, the paper verifies that the result and the practice are basicly fited.
1、本文综述了强夯法的历史和现状,并分析了强夯理论的发展现状及存在的问题。
2、针对强夯法设计存在的问题,提出了强夯法优化设计的思路。并按照此思路,采用有限元软件对强夯法进行了尝试性的模拟,得出了相应的模拟公式。
3、分析研究了夯击能以及夯击数对强夯效果的影响,采用已有工程的室内试验和原位测试试验的数据,进一步探讨加固深度与夯击能和夯击次数的关系。进行了曲线拟合,得到了相应的经验公式。
4、将仿真结果与现场试验结果进行了比较,得到了:“利用Adina进行的仿真能够反映出强夯的实际情况,模拟仿真是可行的”的结论。
5、利用研究成果,指导了某一具体工程实践,通过强夯效果检测,验证了研究成果与工程实践的吻合。
As one of the ground improvement techniques, Dynamic Consolidation (DC) has been genereally accepted for its simplicity-implement and cost-effectiveness. This paper begins with the mechanism of DC, and, according to mechanics-knowledge and mathematics-method, analyses the affection of tamping energy and tamping times on depth of DC. In a word, this paper achieves the following results and conclusions.
1.This paper gives an overview of history and current situation of DC, and analyses the situation of DC mechanism and unsolved problems.
2.Aimed at the problem of DC design, this paper proposes a better DC-design way. According to this way, the paper makes an attempted simulation, and gets the relevant simulation formula, by using finite element software.
3.Analysing the affection of tamping energy and tamping times on depth of Dynamic Consolidation, using the data of laboratory and in-situ tests, this paper discusses futher relationship between depth of DC and tamping energy and tamping times. And then, the paper fits the curve, and gets the relevant experiential formula.
4.Comparing these two formulas, the paper gets the conclusion that using the Adina software can simulate DC, and this simulation is feasible.
5. We guided a specific project with the result of this research. According to the examination of the result, the paper verifies that the result and the practice are basicly fited.
引文
[1]周国钧主编.强力夯实法与振动水冲法[M].北京:冶金工业出版社,1989
[2]龚晓南著.复合地基.杭州:浙江大学出版社,1992
[3]龚晓南著.地基处理新技术.西安:陕西科学技术出版社,1997
[4]地基处理手册编写委员会.地基处理手册.北京:中国建筑工业出版社,1988
[5]董耀.强夯加固软土地基的实践与机理.上海水利,1996(3):25-29
[6]汤磊,陈正汉.用BP网络预估强夯有效加固深度[J].四川健筑科学研究,1998,No.4,p18-20
[7]肖备.信息技术在岩土工程中的利用[J].岩土工程界,2000.Vol.3,No.9,p39-40
[8]甘德福等.上海海滩软弱地基上强夯加固法微观结构的研究.岩土工程论文集.北京:地质出版社.1999
[9]Miller,G.F.&pursey,H(1995).On the partition of energy between elastic wave in a semi-infinitte solid.Proc.R.Soc.London 233,55-69
[10]Smoltczyk,U(1983).Deep compaction.Proc.8~(th)Euro.Conf.Soil Mech.Found.Engig,Helsinki 3,1105-1114
[11]T.M.Feng,K.H.Chen,Y.T.Shi.Laboratory investigation of efficiency of conical based ponders for dynamic compaction.Geotechnique.Vol.50(6).2000
[12]T.W.Feng,K.H.Chen,Y.T.Shi.Size and shape of tamper's base in dynamic compaction of loose sands.In:Processings of the Tenth(2000)International Offshore and Polar Engineering Conference.501-505
[13]W.B.G..M.Jefferies,J.A.Howie,D.Diggle.Explosive compaction:design,implementation and effectiveness.Geotechnique.2000,Vol.50.No.6.657-665
[14]李世海等.爆破-强夯联合加密饱和砂基的工程实践.土工基础.1997,Vol.11,1-3
[15]白冰.饱和软粘土在冲击荷载作用下的性状研究及其应用.(博士学位论文)
[16]G..Mesfi,T.W.Feng,J.M.Benak.Post densification penetration pesistance of clean sands.Journal of Geotechnical Engineefing.1990.Vol.116.No.7,1095-1115
[17]L.Menard,I'Broise.Theoetical and Practical Aspests of Dynamic Consolidation.Ground Treatment by Deep Compaction.Telford Ltd.London,1976
[18]M.P Gambin.Ten years of Dynamic Consolidation.Proceeding of the Eighth Regional Conference for Africa on Soil Mechanics and foundation Engineering(1984),p363-370
[19]Gambin M.P.(1983).The Menard dynamic consolidation method of Nice Airport.In Proc.B European Conf.on Soil Mechanics and Foundation Engrg.Helsink,Vol.1,p231-234.Balkema Publishers
[20]John PO'Brien,Charles P.Gupton.In Situ Stabilizstion of Two Industrial Sites by Dynamic Compaction.p1259-1264
[21]Slocombe,B.C.(1993).Dynamic compaction.In:Ground Improvement,Ground Reinforcement,Ground Treatment.Published by the ASCE,1997,pp409-42
[22]Kyle M.Rollins,Stan J.Jorensen,Todd E.Ross.Optimun moisure content for dynamic eompactin of collapsible soils.Journal of geotechnical and geoenvironmental engineering.1998,Vol124(8),p699-708
[23]Hendy M.S.,Muir LC.Expereence of dynamic replacement on a 40m deep reclamation in Hong Kong.Ground Improvement Geosystems.Thomas Telford,London,1997,PP-81
[24]严人觉,王贻荪,韩清宇.动力基础半空间理论.建筑工业出版社,1991
[25]方永凯,周芝英.强夯法加固地基的若干问题.第六届全国土力学及基础工程学术会议论文集.同济大学出版社,中国建筑工业出版社,1991
[26]吴铭炳,王钟琦.强夯机理的数值分析.工程勘察,1989(2)
[27]范维垣.强夯法机理--宏观与微观的研究现状与发展方向.第四届全国土力学及基础工程会议学术论文,1983
[28]孔令伟.强夯机制与加固效应研究.中国科学院武汉岩土力学研究所(博士学位论文)
[29]王成华.强夯加固深度估算的等效拟静力法.第六届全国土力学及基础工程会议论文集.中国建筑工业出版社,1991,上海
[30]左名麒.震动波与强夯法机理[J].岩土工程学报,1986,8(3):55-62
[31]张永钧等.强夯法处理人块抛石地基的试验研究.第三届地基处理学术讨论会论文集。浙江大学出版社,1992,秦皇岛
[32]郭志恭.强夯法效应分析.化工施工技术,1992(5)
[33]范景相、王钊等.强夯法在高填方路堤加固上的应用研究.山西省公路局,山西省运城高过公路有限页江公司,武汉大学
[34]张平仓,汪稳.强夯法施实践中加固深度问题浅析.岩土力学,2000,21(1):76-80
[35]刘海冲.关于强夯加固181地基影响深度的研究.勘察科学技术,1993(3):19-22
[36]钱家欢,帅方生。边界元法在地基强夯加固中的应用.中国科学(A辑)1987
[37]吴铭炳,王钟琦.强夯机理的数值分析.工程勘查。1989,(3):1-5
[38]孔令伟,袁建新.强夯的边界接触应力与沉降特性分析.岩土工程学报,1998(2)
[39]柳国荣.计算强夯加固效果的动力法.岩土工程界.1993,V615(3):26-31
[40]钱家欢,钱学德等.动力固结的理论与实践.岩土工程学报.1985,Vol(6):1-17
[41]赵茂才,郭朝顺等.人工填土勘察与评价.森林工程.1997,V6113(2):58
[42]邹维列.路堤压实及路基土工复合材料排水层的研究.武汉大学博士学位论文.2004,10
[43]赵明华.土力学与基础工程.武汉工业大学出版社.2000,7
[44]刘景政,杨素春,钟冬波.地基处理与实例分析.中国建筑出版社.1998,5
[45]方永凯,周芝英.强夯法加固地基的若干问题.见:第六届全国土力学及基础工程学术会议文集.上海:同济大学出版社。1991,573-575
[46]袁建新.非线性有限单元法(续二).岩土力学.Vol.8,No.1,1987
[47]吴铭炳,王钟琦.强夯机理的数值分析.工程勘察.p1-5,No.3,1989
[48]M.P.Gambin.Ten Years of Dynamic Consolidation.In:Proc.of the E Conference for Africa on Soil Mechanics and Foundation Engineering.Harare.1984:15-25.Regional363-371
[49]Mitchell.S.K.and Kutti,R.K.:The6th ICSMFE Proceedings.Session 12.Soil Improvement State-of the-Art Report(Preliminary).1981
[50]巴斯K·J著,傅子智译.工程分析中的有限元法.北京:机械工业出版社.1991
[51]周良忠.软粘土地基强夯加固机理、计算与推广应用.四川建筑科学研究.2002,28(1):50-52
[52]白冰.强夯荷载作用下饱和土层孔隙水压力简化计算方法.岩石力学与工程学报.2003,22(9):1469-1473
[53]张德兴.有限元素法新编教程.同济大学出版社.1989
[54]朱百里,沈珠江.计算土力学.上海科学技术出版社.1990
[55]裘以惠,郭玉玲.强夯法加固地基的土体动应力量测.太原工学院学报.1984年第1期
[56]孔令伟,袁建新.强夯作用下成层地基的表面接触应力分布特征.力学学报。 Vol.31,No.2,1999
[57]孔令伟,袁建新.强夯的边界接触应力与沉降特性研究.岩土工程学报.Vol.21,No.2,1998,3
[58]Adina操作手册
[59]南山苏迪亚诺住宅小区强夯工程检测报告
[60]长沙开福区粮食仓库强夯工程检测报告
[61]长沙县榔梨工业园强夯工程检测报告
[2]龚晓南著.复合地基.杭州:浙江大学出版社,1992
[3]龚晓南著.地基处理新技术.西安:陕西科学技术出版社,1997
[4]地基处理手册编写委员会.地基处理手册.北京:中国建筑工业出版社,1988
[5]董耀.强夯加固软土地基的实践与机理.上海水利,1996(3):25-29
[6]汤磊,陈正汉.用BP网络预估强夯有效加固深度[J].四川健筑科学研究,1998,No.4,p18-20
[7]肖备.信息技术在岩土工程中的利用[J].岩土工程界,2000.Vol.3,No.9,p39-40
[8]甘德福等.上海海滩软弱地基上强夯加固法微观结构的研究.岩土工程论文集.北京:地质出版社.1999
[9]Miller,G.F.&pursey,H(1995).On the partition of energy between elastic wave in a semi-infinitte solid.Proc.R.Soc.London 233,55-69
[10]Smoltczyk,U(1983).Deep compaction.Proc.8~(th)Euro.Conf.Soil Mech.Found.Engig,Helsinki 3,1105-1114
[11]T.M.Feng,K.H.Chen,Y.T.Shi.Laboratory investigation of efficiency of conical based ponders for dynamic compaction.Geotechnique.Vol.50(6).2000
[12]T.W.Feng,K.H.Chen,Y.T.Shi.Size and shape of tamper's base in dynamic compaction of loose sands.In:Processings of the Tenth(2000)International Offshore and Polar Engineering Conference.501-505
[13]W.B.G..M.Jefferies,J.A.Howie,D.Diggle.Explosive compaction:design,implementation and effectiveness.Geotechnique.2000,Vol.50.No.6.657-665
[14]李世海等.爆破-强夯联合加密饱和砂基的工程实践.土工基础.1997,Vol.11,1-3
[15]白冰.饱和软粘土在冲击荷载作用下的性状研究及其应用.(博士学位论文)
[16]G..Mesfi,T.W.Feng,J.M.Benak.Post densification penetration pesistance of clean sands.Journal of Geotechnical Engineefing.1990.Vol.116.No.7,1095-1115
[17]L.Menard,I'Broise.Theoetical and Practical Aspests of Dynamic Consolidation.Ground Treatment by Deep Compaction.Telford Ltd.London,1976
[18]M.P Gambin.Ten years of Dynamic Consolidation.Proceeding of the Eighth Regional Conference for Africa on Soil Mechanics and foundation Engineering(1984),p363-370
[19]Gambin M.P.(1983).The Menard dynamic consolidation method of Nice Airport.In Proc.B European Conf.on Soil Mechanics and Foundation Engrg.Helsink,Vol.1,p231-234.Balkema Publishers
[20]John PO'Brien,Charles P.Gupton.In Situ Stabilizstion of Two Industrial Sites by Dynamic Compaction.p1259-1264
[21]Slocombe,B.C.(1993).Dynamic compaction.In:Ground Improvement,Ground Reinforcement,Ground Treatment.Published by the ASCE,1997,pp409-42
[22]Kyle M.Rollins,Stan J.Jorensen,Todd E.Ross.Optimun moisure content for dynamic eompactin of collapsible soils.Journal of geotechnical and geoenvironmental engineering.1998,Vol124(8),p699-708
[23]Hendy M.S.,Muir LC.Expereence of dynamic replacement on a 40m deep reclamation in Hong Kong.Ground Improvement Geosystems.Thomas Telford,London,1997,PP-81
[24]严人觉,王贻荪,韩清宇.动力基础半空间理论.建筑工业出版社,1991
[25]方永凯,周芝英.强夯法加固地基的若干问题.第六届全国土力学及基础工程学术会议论文集.同济大学出版社,中国建筑工业出版社,1991
[26]吴铭炳,王钟琦.强夯机理的数值分析.工程勘察,1989(2)
[27]范维垣.强夯法机理--宏观与微观的研究现状与发展方向.第四届全国土力学及基础工程会议学术论文,1983
[28]孔令伟.强夯机制与加固效应研究.中国科学院武汉岩土力学研究所(博士学位论文)
[29]王成华.强夯加固深度估算的等效拟静力法.第六届全国土力学及基础工程会议论文集.中国建筑工业出版社,1991,上海
[30]左名麒.震动波与强夯法机理[J].岩土工程学报,1986,8(3):55-62
[31]张永钧等.强夯法处理人块抛石地基的试验研究.第三届地基处理学术讨论会论文集。浙江大学出版社,1992,秦皇岛
[32]郭志恭.强夯法效应分析.化工施工技术,1992(5)
[33]范景相、王钊等.强夯法在高填方路堤加固上的应用研究.山西省公路局,山西省运城高过公路有限页江公司,武汉大学
[34]张平仓,汪稳.强夯法施实践中加固深度问题浅析.岩土力学,2000,21(1):76-80
[35]刘海冲.关于强夯加固181地基影响深度的研究.勘察科学技术,1993(3):19-22
[36]钱家欢,帅方生。边界元法在地基强夯加固中的应用.中国科学(A辑)1987
[37]吴铭炳,王钟琦.强夯机理的数值分析.工程勘查。1989,(3):1-5
[38]孔令伟,袁建新.强夯的边界接触应力与沉降特性分析.岩土工程学报,1998(2)
[39]柳国荣.计算强夯加固效果的动力法.岩土工程界.1993,V615(3):26-31
[40]钱家欢,钱学德等.动力固结的理论与实践.岩土工程学报.1985,Vol(6):1-17
[41]赵茂才,郭朝顺等.人工填土勘察与评价.森林工程.1997,V6113(2):58
[42]邹维列.路堤压实及路基土工复合材料排水层的研究.武汉大学博士学位论文.2004,10
[43]赵明华.土力学与基础工程.武汉工业大学出版社.2000,7
[44]刘景政,杨素春,钟冬波.地基处理与实例分析.中国建筑出版社.1998,5
[45]方永凯,周芝英.强夯法加固地基的若干问题.见:第六届全国土力学及基础工程学术会议文集.上海:同济大学出版社。1991,573-575
[46]袁建新.非线性有限单元法(续二).岩土力学.Vol.8,No.1,1987
[47]吴铭炳,王钟琦.强夯机理的数值分析.工程勘察.p1-5,No.3,1989
[48]M.P.Gambin.Ten Years of Dynamic Consolidation.In:Proc.of the E Conference for Africa on Soil Mechanics and Foundation Engineering.Harare.1984:15-25.Regional363-371
[49]Mitchell.S.K.and Kutti,R.K.:The6th ICSMFE Proceedings.Session 12.Soil Improvement State-of the-Art Report(Preliminary).1981
[50]巴斯K·J著,傅子智译.工程分析中的有限元法.北京:机械工业出版社.1991
[51]周良忠.软粘土地基强夯加固机理、计算与推广应用.四川建筑科学研究.2002,28(1):50-52
[52]白冰.强夯荷载作用下饱和土层孔隙水压力简化计算方法.岩石力学与工程学报.2003,22(9):1469-1473
[53]张德兴.有限元素法新编教程.同济大学出版社.1989
[54]朱百里,沈珠江.计算土力学.上海科学技术出版社.1990
[55]裘以惠,郭玉玲.强夯法加固地基的土体动应力量测.太原工学院学报.1984年第1期
[56]孔令伟,袁建新.强夯作用下成层地基的表面接触应力分布特征.力学学报。 Vol.31,No.2,1999
[57]孔令伟,袁建新.强夯的边界接触应力与沉降特性研究.岩土工程学报.Vol.21,No.2,1998,3
[58]Adina操作手册
[59]南山苏迪亚诺住宅小区强夯工程检测报告
[60]长沙开福区粮食仓库强夯工程检测报告
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