路堑挡墙稳定性的主要影响因素分析
|
摘要
研究目的:本文通过运用风险管理理论中的单因素敏感性分析法,对路堑地段挡土墙稳定性的影响因素进行敏感性分析,介绍敏感性分析的步骤,找出影响目标函数的主要因素,并根据影响程度将风险因素进行排序。通过分析稳定性对影响因素的敏感程度和影响因素的变化规律,提出设计和施工中对风险事件的预防措施和应对方法。研究结论:(1)内摩擦角和土体重度是影响挡土墙稳定性的关键因素;(2)由于排水不畅会导致这两个因素变化较大,因此挡土墙排水设施的设计和施工非常重要;(3)挡土墙平台的增加和刷方坡率的放缓,能减小土压力,但到一定的程度就不起作用,因此,设计时应合理利用这两种措施;(4)研究成果可应用于铁路、公路路基支挡工程。
Research purposes:(1)This paper analyzes the main influence factors on the stability of cutting retaining wall by using single-factor sensitivity analysis method in the risk management theory,gives the detailed introduction on the sensitivity analysis steps to find out the main influence factors on the function target,sort the risk factors according to their influence degree of risk factors and presents the measures and methods for prevention of the risk event in the design and construction by analyzing the change regulation of the stability on the sensitive degree and the influence factors. Research conclusions:The angle of internal friction and soil severe are the key influence factors on the stability of retaining wall.(2) These two influence factors will change if the drainage system is poor,so the design and construction of drainage system are very important for the retaining wall.(3)The earth pressure of retaining wall can be reduced by increasing the width of the platform and reducing the ratio of slope to a certain extent.But these two measures will not work if the extent is exceeded,so they should be used reasonably in the design.(4) The research results can be used in subgrade supporting and retaining of railway and highway.
Research purposes:(1)This paper analyzes the main influence factors on the stability of cutting retaining wall by using single-factor sensitivity analysis method in the risk management theory,gives the detailed introduction on the sensitivity analysis steps to find out the main influence factors on the function target,sort the risk factors according to their influence degree of risk factors and presents the measures and methods for prevention of the risk event in the design and construction by analyzing the change regulation of the stability on the sensitive degree and the influence factors. Research conclusions:The angle of internal friction and soil severe are the key influence factors on the stability of retaining wall.(2) These two influence factors will change if the drainage system is poor,so the design and construction of drainage system are very important for the retaining wall.(3)The earth pressure of retaining wall can be reduced by increasing the width of the platform and reducing the ratio of slope to a certain extent.But these two measures will not work if the extent is exceeded,so they should be used reasonably in the design.(4) The research results can be used in subgrade supporting and retaining of railway and highway.
引文
[1]陈伟珂.工程项目风险管理[M].北京:人民交通出版社,2009.Chen Weihe.Risk Management for Engineering[M].Beijing:China Communications Press,2009.
[2]戴志仁.岩质边坡参数敏感度数值分析[J].路基工程,2010(3):100-102.Dai Zhiren.Numerical Analysis on Sensitivity of RockSlope Parameters[J].Subgrade Engineering,2010(3):100-102.
[3]TB10001—2005,铁路路基设计规范[S].TB 10001—2005,Code for Design on Subgrade ofRailway[S].
[4]罗一农.重力式挡墙的选型及布置探讨[J].铁道工程学报,2008(4):23-27.Luo Yinong.Electrotype of Gravity Retaining Wall andDiscussion about it’s Cross Section Arrangement[J].Journal of Railway Engineering Society,2008(4):23-27.
[5]TB10025—2006,铁路路基支挡结构设计规范[S].TB 10025—2006,Code for Design on RetainingStructures of Railway Subgrade[S].
[6]马少俊,胡安峰,王奎华.地震作用下挡土墙的滑动稳定性分析[J].工程力学,2012(7):217-221.Ma Shaojun,Hu Anfeng,Wang Kuihua.StabilityAgainst Sliding Analysis of a Retaining Wall underSeismic Loading Condition[J].EngineeringMechanics,2012(7):217-221.
[7]黄安双.重力式挡土墙基底应力及合力偏心距验算[J].黑龙江交通科技,2012(4):36.Huang Anshuang.Gravity Retaining Wall Base Stressand Resultant Force Eccentricity Calculation[J].Heilongjiang Jiaotong Keji,2012(4):36.
[8]铁道第一勘察设计院.铁路工程设计技术手册.路基[M].北京:中国铁道出版社,1992.The first Railway Survey and Design Institute.DesignManual for Railway Engineering.Subgrade[M].Beijing:China Railway Publishing House,1992.
[9]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,2011.Li Haiguang.Design and Engineering Example for NewRetaining Structure[M].Beijing:China communicationspress,2011.
[10]中铁二院工程集团有限责任公司,西南交通大学.西南山区铁路路基设计风险识别与防治对策研究总报告[R].成都:中铁二院工程集团有限责任公司,西南交通大学,2011.China Railway Eryuan Engineering Group Co.Ltd,Southwest Jiaotong University.General Report of Studyon Risk Identification and Prevention Measure ofRailway Subgrade Design in Southwest Mountain Area[R].Chengdu:China Railway Eryuan EngineeringGroup Co.Ltd,Southwest Jiaotong University,2011.
[2]戴志仁.岩质边坡参数敏感度数值分析[J].路基工程,2010(3):100-102.Dai Zhiren.Numerical Analysis on Sensitivity of RockSlope Parameters[J].Subgrade Engineering,2010(3):100-102.
[3]TB10001—2005,铁路路基设计规范[S].TB 10001—2005,Code for Design on Subgrade ofRailway[S].
[4]罗一农.重力式挡墙的选型及布置探讨[J].铁道工程学报,2008(4):23-27.Luo Yinong.Electrotype of Gravity Retaining Wall andDiscussion about it’s Cross Section Arrangement[J].Journal of Railway Engineering Society,2008(4):23-27.
[5]TB10025—2006,铁路路基支挡结构设计规范[S].TB 10025—2006,Code for Design on RetainingStructures of Railway Subgrade[S].
[6]马少俊,胡安峰,王奎华.地震作用下挡土墙的滑动稳定性分析[J].工程力学,2012(7):217-221.Ma Shaojun,Hu Anfeng,Wang Kuihua.StabilityAgainst Sliding Analysis of a Retaining Wall underSeismic Loading Condition[J].EngineeringMechanics,2012(7):217-221.
[7]黄安双.重力式挡土墙基底应力及合力偏心距验算[J].黑龙江交通科技,2012(4):36.Huang Anshuang.Gravity Retaining Wall Base Stressand Resultant Force Eccentricity Calculation[J].Heilongjiang Jiaotong Keji,2012(4):36.
[8]铁道第一勘察设计院.铁路工程设计技术手册.路基[M].北京:中国铁道出版社,1992.The first Railway Survey and Design Institute.DesignManual for Railway Engineering.Subgrade[M].Beijing:China Railway Publishing House,1992.
[9]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,2011.Li Haiguang.Design and Engineering Example for NewRetaining Structure[M].Beijing:China communicationspress,2011.
[10]中铁二院工程集团有限责任公司,西南交通大学.西南山区铁路路基设计风险识别与防治对策研究总报告[R].成都:中铁二院工程集团有限责任公司,西南交通大学,2011.China Railway Eryuan Engineering Group Co.Ltd,Southwest Jiaotong University.General Report of Studyon Risk Identification and Prevention Measure ofRailway Subgrade Design in Southwest Mountain Area[R].Chengdu:China Railway Eryuan EngineeringGroup Co.Ltd,Southwest Jiaotong University,2011.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心