港区道路软土地基相关问题的研究
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摘要
随着我国经济建设的快速发展,国家大力推进基础建设,越来越多的道路不可避免地修筑在软基上。如果软基的承载力不够,不加以处治就会发生工程灾害,所以对软土地基的研究显得越发重要。各个国家和我国的各行业对软土的定义和分类都不尽相同,本文通过分析比较各软土的定义,提出自己的看法,并根据软土的分类及其工程特点对软基进行了归纳总结。软土地基处治方法很多,各方法均有优缺点。
本文总结了各类软基的处治方法,并指出一些方法的不足。在软基上修筑高等级公路,必须要进行软基监测,以确保路基稳定。软基监测以沉降与稳定监测为主,本文分析总结了软基的监测项目、监测目的以及监测方案等。了解加载过程中地基的固结情况和计算工后沉降是沉降计算的两方面。根据实测资料推算沉降量的方法有很多,本文对灰色系统GM(1,1)模型、BP神经网络模型以及灰色人工神经网络模型预测沉降的方法进行了分析研究,还分析总结了基于室内外试验数据的有限元模拟计算。
本文对依托工程研究区淤泥质软土地基进行相关的研究。根据室内外试验数据分析该处的软基特点,分析该软基的处治方法以及软基的沉降与稳定监测,然后通过分析监测数据,评价其软基处治效果,并根据实测沉降资料,运用灰色系统GM(1,1)模型、BP神经网络模型以及灰色人工神经网络模型对预压期沉降进行预测,采用Matlab编程来实现其计算。根据相关试验数据,运用ANSYS有限元软件进行模拟计算,分析该段路基的沉降与稳定情况。
With the fast development of our country’s economy, state devoted great efforts to promote Infrastructure,and more and more roads are inevitably constructed on soft soil foundations. If bearing capacity of soft soil foundations is low and they are not treated as well, the engineering hazard will occur. So the research on soft soil foundations becomes more important. The definition and classification of soft soil are quite different from countries to countries, even from all walks of life in our country. We give our comment on this issue after analyzing and comparing different definitions of the soft soil,and try to summarize the soft soil foundation according to the classification and the engineering features of soft soil. There are many methods to teat the soft soil foundation. For each method it has both advantages and disadvantages.
In the thesis, we sum up all different methods of treating soft soil foundation, then point out shortcomings of some methods. When the high-grade highway is to be constructed on the soft soil foundation, it is necessary for us to have a soil monitor to ensure that the roadbed is stable. Since the settlement and stability are the main programs in the process of monitoring, we synthesis for the soft soil foundation the monitoring items, the monitoring schemes and so on. There are two aspects for the computation of the settlement, i.e. to understand the consolidation of the soft soil when load is applied on the one hand and to calculate the settlement of the soft soil after construction on the other hand. There are also many methods for the calculations of the settlement based on observed data. For the GM(1,1) model, BP neural network model and the combination of GM with neural network model, we proceed a study and conduct a finite element simulation analysis based on data in laboratory and field experiment.
Besides, we carry out a relevant research on the muddy soil foundation at study area supported project. We analyze the characteristics of the soft soil foundation according to the data in laboratory and field experiment, optimize the methods for the soft soil foundation treatment, and conduct settlement and stability monitor for the soft soil foundation. Then we make a judgment for the treatment effect by analyzing the monitoring data, and use GM(1,1) model and BP neural network model, the combination of GM and neural network model to predict the amount of settlement during the period of pre-loading according to observed settlement data. The calculation is fulfilled with the use of Matlab. According to the experimental data, we carry on a simulation with the software of ANSYS and discuss the settlement and stability of the roadbed.
本文总结了各类软基的处治方法,并指出一些方法的不足。在软基上修筑高等级公路,必须要进行软基监测,以确保路基稳定。软基监测以沉降与稳定监测为主,本文分析总结了软基的监测项目、监测目的以及监测方案等。了解加载过程中地基的固结情况和计算工后沉降是沉降计算的两方面。根据实测资料推算沉降量的方法有很多,本文对灰色系统GM(1,1)模型、BP神经网络模型以及灰色人工神经网络模型预测沉降的方法进行了分析研究,还分析总结了基于室内外试验数据的有限元模拟计算。
本文对依托工程研究区淤泥质软土地基进行相关的研究。根据室内外试验数据分析该处的软基特点,分析该软基的处治方法以及软基的沉降与稳定监测,然后通过分析监测数据,评价其软基处治效果,并根据实测沉降资料,运用灰色系统GM(1,1)模型、BP神经网络模型以及灰色人工神经网络模型对预压期沉降进行预测,采用Matlab编程来实现其计算。根据相关试验数据,运用ANSYS有限元软件进行模拟计算,分析该段路基的沉降与稳定情况。
With the fast development of our country’s economy, state devoted great efforts to promote Infrastructure,and more and more roads are inevitably constructed on soft soil foundations. If bearing capacity of soft soil foundations is low and they are not treated as well, the engineering hazard will occur. So the research on soft soil foundations becomes more important. The definition and classification of soft soil are quite different from countries to countries, even from all walks of life in our country. We give our comment on this issue after analyzing and comparing different definitions of the soft soil,and try to summarize the soft soil foundation according to the classification and the engineering features of soft soil. There are many methods to teat the soft soil foundation. For each method it has both advantages and disadvantages.
In the thesis, we sum up all different methods of treating soft soil foundation, then point out shortcomings of some methods. When the high-grade highway is to be constructed on the soft soil foundation, it is necessary for us to have a soil monitor to ensure that the roadbed is stable. Since the settlement and stability are the main programs in the process of monitoring, we synthesis for the soft soil foundation the monitoring items, the monitoring schemes and so on. There are two aspects for the computation of the settlement, i.e. to understand the consolidation of the soft soil when load is applied on the one hand and to calculate the settlement of the soft soil after construction on the other hand. There are also many methods for the calculations of the settlement based on observed data. For the GM(1,1) model, BP neural network model and the combination of GM with neural network model, we proceed a study and conduct a finite element simulation analysis based on data in laboratory and field experiment.
Besides, we carry out a relevant research on the muddy soil foundation at study area supported project. We analyze the characteristics of the soft soil foundation according to the data in laboratory and field experiment, optimize the methods for the soft soil foundation treatment, and conduct settlement and stability monitor for the soft soil foundation. Then we make a judgment for the treatment effect by analyzing the monitoring data, and use GM(1,1) model and BP neural network model, the combination of GM and neural network model to predict the amount of settlement during the period of pre-loading according to observed settlement data. The calculation is fulfilled with the use of Matlab. According to the experimental data, we carry on a simulation with the software of ANSYS and discuss the settlement and stability of the roadbed.
引文
[1]刘必胜.安徽沿江高速公路大渡口段软土路基工程地质评价.合肥工业大学学报(自然科学版),2005,28(8):922~925
[2]阙金声,陈剑平,石丙飞.广州大学城软土的工程地质性质统计分析.煤田地质与勘探,2007,35(1):50~51
[3]易敏,章定文.连云港海相软土基本特性与处理方法探讨.公路交通科技,2005,22(5):52~55
[4]羊小云.天津新港软土工程地质特征.港工技术,2007,1:50~51
[5]刘用海.宁波软土工程特性及其本构模型应用研究:[浙江大学博士学位论文].杭州:浙江大学,2008,58~59
[6]王茂靖.福厦高速铁路软土工程地质特性及其工程处理措施:[西南交通大学硕士学位论文].成都:西南交通大学,2005,56~60
[7]毛斌.内昆铁路斜坡软土段地质成因分析及工程实践.铁道建筑,2005,10: 26~28
[8]付开隆,王天良.黔桂线车河站斜坡软土成因及治理措施.铁道工程学报,2007,6:28~30
[9]卿三惠,黄润秋.西南煤系地层软岩地区坡麓相斜坡软土特性研究.水文地质工程地质,2005,2:53~56
[10]韦复才.岩溶红土地基中的软土类型及其工程特性.水文地质工程地质,2007,6:79~81
[11]张宏.长江口北侧松散沉积物工程特性评价研究:[东南大学硕士学位论文].南京:东南大学,2005,47~50
[12]徐燕.季冻区草炭土工程地质特性及变形沉降研究:[吉林大学博士学位论文].吉林:吉林大学,2008,19~106
[13]李振.排水板处理软土地基固结沉降与稳定控制研究:[浙江大学硕士学位论文].杭州:2006,1~5
[14]赵岩.兰许高速公路路基稳定性分析:[长安大学硕士学位论文].西安:长安大学,2006,9~12
[15]张亮.新黄高速公路路基沉降及施工控制技术研究:[长沙理工大学硕士学位论文].长沙:长沙理工大学,2006,10~22
[16]金才勇.高速公路地基处理过渡段沉降监测与计算方法研究:[河海大学硕士学位论文].南京:河海大学,2007,11~21
[17]孟庆新.软土路基变形分析与沉降预测:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,7~10
[18]肖桃李.高速公路软土地基沉降分析及工后沉降预测:[武汉理工大学硕士学位论文].武汉:武汉理工大学,2007,42~50
[19]李明瑛.某沿海地区砂性软土类的试验研究.水土保持研究,2007,14(3):186~188
[20]熊恩来.云南泥炭、泥炭质土的力学特性及本构模型研究:[昆明理工大学硕士学位论文].昆明:昆明理工大学,2005,56-60
[21]胡华.动载作用下淤泥质软土流变模型与流变方程.岩土力学学报,2007,28(2):240
[22]师爱瑛,陈海威.软土地基路堤填筑沉降监测.山西建筑,2007,33(9):297~298
[23]赵润涛.高速公路软基处理及观测技术研究:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,9~18
[24]汪晓丰.软土地基上填方路堤后期变形分析:[合肥工业大学硕士学位论文].合肥:合肥工业大学,2004,2~6
[25]刘金升.高速铁路高路堤稳定性分析及工后沉降预测:[西南交通大学硕士学位论文].成都:西南交通大学,2005,43~71
[26]张铁壮.基于稳定监测对高速公路软土地基沉降特性研究:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,36~49
[27]程亮.通启高速公路软基处理及沉降预测研究:[河海大学工程硕士学位论文].南京:河海大学,2006,13~58
[28]蒋新明.滨海地区大面积软土地基处理及监测技术研究:[中南大学工程硕士学位论文].长沙:中南大学,2007,32~64
[29]邓聚龙.灰色预测与决策.武汉:华中理工大学出版社,1988,13~95
[30]李大军,孙旭红,汤拥军.pGM(1,1)灰色预测模型及其应用.华东地质学院学报,2002,25(1):40~43
[31]王勖成.有限单元法.北京:清华大学出版社,2003, 13~95
[32]钱家欢,殷宗泽.土工原理与计算.北京:中国水利水电出版社,1996,199~237
[33]杨桂通.弹塑性力学引论.北京:清华大学出版社,2004,7~78
[34]李峻利,姚代禄.路基设计原理与计算.北京:人民交通出版社,2001,37~69
[35]宰金珉,梅国雄.成长曲线在地基沉降预测中的应用.南京建筑工程学院学报,2000,(2):8-13
[36]宇云飞,张文彤,张梅.泊松曲线在软土路基沉降预测中的应用研究.河北农业大学学报,2004,27(4):97~98
[37]许永明,徐泽中.一种预测路基工后沉降量的方法.河海大学学报,2000,(5):110~113.
[38]邓聚龙.灰色预测与决策.武汉:华中理工大学出版社,1988
[39]刘思峰,党耀国,方志耕等.灰色系统理论及其应用.北京:科学出版社,2004,125~146
[40]韩力群.人工神经网络教程.北京:北京邮电大学出版社,2006,58~79
[41]徐金明,张孟喜,丁涛.MATLAB实用教程.北京:清华大学出版社,北京交通大学出版社,2005,180~187
[42]Ove Navresen,the Oslo airport express train.Japan Railway & Transport,1999,19
[43]Lee.K.L adhesion bonds in sands at high pressure.J.Geotech Engng Div,ASCE,1997(GT8)
[44]Anderson.D.G,Stock K.H.Shear modules,a time dependent soil property In Dynamic Geotechnical-Testing.Am Soc testing and Materials,Special Tech Publication,6~54
[45]中华人民共和国行业标准.公路软土地基路堤设计与施工技术规范(JTJ017-96).北京:人民交通出版社,1997
[46]Lambe,T.W.Methods of estimating settlement.Proc.ASCE,JSMFD, Vol. 90, No. SM5, 1964
[47]Akira Asaoka and Minoru Matsuo.An inverse problem approach to settlement prediction.Soils and Foundations,1980,20(4)
[48]叶书麟主编.地基处理工程实例应用手册[M].北京:中国建筑工业出版社,1998
[49]Sridharan A,Murthvand N S,Prskash K.Rectangular hyperbola method of consolidation analysis[J].Geotechnique,1987,37(3):355~368
[50]公路软土地基路堤设计与施工技术规范(JTJ017—96).中华人民共和国交通部发布.人民交通出版社,1997.10.
[51]高大钊,袁聚云主编.土质学与土力学.北京:人民交通出版社,2004.
[52]关健.某粉喷桩复合地基有限元分析.长沙理工大学学报(自然科学版),2006,3(1):11-13
[53]中华人民共和国行业标准.建筑地基基础设计规范(GB50007-2002).中华人民共和国建设部,2002
[54]中华人民共和国国家标准.岩土工程勘察规范(GB50021-2001)(2009年版).中华人民共和国建设部,2009
[55]编委会.工程地质手册(第四版).北京:中国建筑工业出版社,2002
[56]中华人民共和国行业标准.港口工程地质勘察规范(JTJ240-97).中华人民交通部,1997
[57]中华人民共和国行业标准.铁路工程岩土分类标准(TB10077-2001).中华人民铁道部,2001
[58]Yin jianhua,Zhu jungao.Elastic Visco-pastic Consolidation Modelling of Soft Clay . Chinese Journal of Geotechnical Engineering,1999,21(3):360~365.
[59]Dennes T B,Casan L S,Balasubramaniam A S.Inverse analysis of geotechnicalparameters on improved soft Bangkok clay.Journal of Geotechnical Engineering, 1992,118(7):1012~1029
[60] Olson R E.Settlement of embankments on soft clays. Journal of Geoenviromantal Engineering,1998,124(4):278~278
[61] Asaoka A. Analysis and prediction of consolidation settlement of normally consolidation clay foundation under embankments loading.Soil and foundations,1988,28(3):35~50
[62] Skempton A.W,Bjerrum L. A contribution to settlement analysis of foundation on clay.Geotechnique,Vol.7,No.4,1957(7),PP:168~178
[2]阙金声,陈剑平,石丙飞.广州大学城软土的工程地质性质统计分析.煤田地质与勘探,2007,35(1):50~51
[3]易敏,章定文.连云港海相软土基本特性与处理方法探讨.公路交通科技,2005,22(5):52~55
[4]羊小云.天津新港软土工程地质特征.港工技术,2007,1:50~51
[5]刘用海.宁波软土工程特性及其本构模型应用研究:[浙江大学博士学位论文].杭州:浙江大学,2008,58~59
[6]王茂靖.福厦高速铁路软土工程地质特性及其工程处理措施:[西南交通大学硕士学位论文].成都:西南交通大学,2005,56~60
[7]毛斌.内昆铁路斜坡软土段地质成因分析及工程实践.铁道建筑,2005,10: 26~28
[8]付开隆,王天良.黔桂线车河站斜坡软土成因及治理措施.铁道工程学报,2007,6:28~30
[9]卿三惠,黄润秋.西南煤系地层软岩地区坡麓相斜坡软土特性研究.水文地质工程地质,2005,2:53~56
[10]韦复才.岩溶红土地基中的软土类型及其工程特性.水文地质工程地质,2007,6:79~81
[11]张宏.长江口北侧松散沉积物工程特性评价研究:[东南大学硕士学位论文].南京:东南大学,2005,47~50
[12]徐燕.季冻区草炭土工程地质特性及变形沉降研究:[吉林大学博士学位论文].吉林:吉林大学,2008,19~106
[13]李振.排水板处理软土地基固结沉降与稳定控制研究:[浙江大学硕士学位论文].杭州:2006,1~5
[14]赵岩.兰许高速公路路基稳定性分析:[长安大学硕士学位论文].西安:长安大学,2006,9~12
[15]张亮.新黄高速公路路基沉降及施工控制技术研究:[长沙理工大学硕士学位论文].长沙:长沙理工大学,2006,10~22
[16]金才勇.高速公路地基处理过渡段沉降监测与计算方法研究:[河海大学硕士学位论文].南京:河海大学,2007,11~21
[17]孟庆新.软土路基变形分析与沉降预测:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,7~10
[18]肖桃李.高速公路软土地基沉降分析及工后沉降预测:[武汉理工大学硕士学位论文].武汉:武汉理工大学,2007,42~50
[19]李明瑛.某沿海地区砂性软土类的试验研究.水土保持研究,2007,14(3):186~188
[20]熊恩来.云南泥炭、泥炭质土的力学特性及本构模型研究:[昆明理工大学硕士学位论文].昆明:昆明理工大学,2005,56-60
[21]胡华.动载作用下淤泥质软土流变模型与流变方程.岩土力学学报,2007,28(2):240
[22]师爱瑛,陈海威.软土地基路堤填筑沉降监测.山西建筑,2007,33(9):297~298
[23]赵润涛.高速公路软基处理及观测技术研究:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,9~18
[24]汪晓丰.软土地基上填方路堤后期变形分析:[合肥工业大学硕士学位论文].合肥:合肥工业大学,2004,2~6
[25]刘金升.高速铁路高路堤稳定性分析及工后沉降预测:[西南交通大学硕士学位论文].成都:西南交通大学,2005,43~71
[26]张铁壮.基于稳定监测对高速公路软土地基沉降特性研究:[河北工业大学硕士学位论文].石家庄:河北工业大学,2006,36~49
[27]程亮.通启高速公路软基处理及沉降预测研究:[河海大学工程硕士学位论文].南京:河海大学,2006,13~58
[28]蒋新明.滨海地区大面积软土地基处理及监测技术研究:[中南大学工程硕士学位论文].长沙:中南大学,2007,32~64
[29]邓聚龙.灰色预测与决策.武汉:华中理工大学出版社,1988,13~95
[30]李大军,孙旭红,汤拥军.pGM(1,1)灰色预测模型及其应用.华东地质学院学报,2002,25(1):40~43
[31]王勖成.有限单元法.北京:清华大学出版社,2003, 13~95
[32]钱家欢,殷宗泽.土工原理与计算.北京:中国水利水电出版社,1996,199~237
[33]杨桂通.弹塑性力学引论.北京:清华大学出版社,2004,7~78
[34]李峻利,姚代禄.路基设计原理与计算.北京:人民交通出版社,2001,37~69
[35]宰金珉,梅国雄.成长曲线在地基沉降预测中的应用.南京建筑工程学院学报,2000,(2):8-13
[36]宇云飞,张文彤,张梅.泊松曲线在软土路基沉降预测中的应用研究.河北农业大学学报,2004,27(4):97~98
[37]许永明,徐泽中.一种预测路基工后沉降量的方法.河海大学学报,2000,(5):110~113.
[38]邓聚龙.灰色预测与决策.武汉:华中理工大学出版社,1988
[39]刘思峰,党耀国,方志耕等.灰色系统理论及其应用.北京:科学出版社,2004,125~146
[40]韩力群.人工神经网络教程.北京:北京邮电大学出版社,2006,58~79
[41]徐金明,张孟喜,丁涛.MATLAB实用教程.北京:清华大学出版社,北京交通大学出版社,2005,180~187
[42]Ove Navresen,the Oslo airport express train.Japan Railway & Transport,1999,19
[43]Lee.K.L adhesion bonds in sands at high pressure.J.Geotech Engng Div,ASCE,1997(GT8)
[44]Anderson.D.G,Stock K.H.Shear modules,a time dependent soil property In Dynamic Geotechnical-Testing.Am Soc testing and Materials,Special Tech Publication,6~54
[45]中华人民共和国行业标准.公路软土地基路堤设计与施工技术规范(JTJ017-96).北京:人民交通出版社,1997
[46]Lambe,T.W.Methods of estimating settlement.Proc.ASCE,JSMFD, Vol. 90, No. SM5, 1964
[47]Akira Asaoka and Minoru Matsuo.An inverse problem approach to settlement prediction.Soils and Foundations,1980,20(4)
[48]叶书麟主编.地基处理工程实例应用手册[M].北京:中国建筑工业出版社,1998
[49]Sridharan A,Murthvand N S,Prskash K.Rectangular hyperbola method of consolidation analysis[J].Geotechnique,1987,37(3):355~368
[50]公路软土地基路堤设计与施工技术规范(JTJ017—96).中华人民共和国交通部发布.人民交通出版社,1997.10.
[51]高大钊,袁聚云主编.土质学与土力学.北京:人民交通出版社,2004.
[52]关健.某粉喷桩复合地基有限元分析.长沙理工大学学报(自然科学版),2006,3(1):11-13
[53]中华人民共和国行业标准.建筑地基基础设计规范(GB50007-2002).中华人民共和国建设部,2002
[54]中华人民共和国国家标准.岩土工程勘察规范(GB50021-2001)(2009年版).中华人民共和国建设部,2009
[55]编委会.工程地质手册(第四版).北京:中国建筑工业出版社,2002
[56]中华人民共和国行业标准.港口工程地质勘察规范(JTJ240-97).中华人民交通部,1997
[57]中华人民共和国行业标准.铁路工程岩土分类标准(TB10077-2001).中华人民铁道部,2001
[58]Yin jianhua,Zhu jungao.Elastic Visco-pastic Consolidation Modelling of Soft Clay . Chinese Journal of Geotechnical Engineering,1999,21(3):360~365.
[59]Dennes T B,Casan L S,Balasubramaniam A S.Inverse analysis of geotechnicalparameters on improved soft Bangkok clay.Journal of Geotechnical Engineering, 1992,118(7):1012~1029
[60] Olson R E.Settlement of embankments on soft clays. Journal of Geoenviromantal Engineering,1998,124(4):278~278
[61] Asaoka A. Analysis and prediction of consolidation settlement of normally consolidation clay foundation under embankments loading.Soil and foundations,1988,28(3):35~50
[62] Skempton A.W,Bjerrum L. A contribution to settlement analysis of foundation on clay.Geotechnique,Vol.7,No.4,1957(7),PP:168~178
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