喀什场地土剪切波速与土层深度经验关系
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摘要
在喀什市城区地震小区划工作的基础上,通过对喀什城区地貌单元划分,描述了不同地貌单元内的地层岩性,将实测剪切波速钻孔资料统计分析,运用较为常用的三种统计回归分析方法给出喀什市城区不同地貌单元不同土类剪切波速与土层深度的经验关系。结果可为喀什市城区防震减灾规划土层地震反应分析提供依据。
The shear wave velocity of soil is one of the most widely used parameters of geotechnical engineering investigation and seismic safety evaluation.It is indispensable for the determination of site classification and soil response calculation,and is also indispensable for calculating the predominant period of building site,judging liquefaction of sand foundation,test the result of foundation soil reinforcement treatment and elastic modulus.In this project,when there is no measured shear wave velocity according to the standard penetration value or the depth of soil layer using the statistical relationship for soil layer shear wave velocity,and with a large number of ongoing engineering constructions in the same city,the repetition of shear wave velocity testing not only affects the progress of the project,but also increases the project investment.Therefore,it is reasonable to assume that the empirical relationship between the soil shear wave velocity and the depth of soil,which will accelerate the construction of major projects in the process,has significant social and economic benefits.Since the 1970s,scholars at home and abroad(e.g.,Hardin[Year])that conduct research on the shear wave velocity of statistical relationships believe that the shear wave velocity and the depth of the soil layer have better statistical relationships,which can be mainly divided into three types of the power function,linear function and a polynomial.Kashi is an ancient border city of the western motherland with a history of over two thousand years.Kashi city decided in 2008 to carry out the seismic microzonation.The working range was105km2,in which 105drill holes were laid,and then more than 1600test points of the shear wave velocity were obtained.This work laid the foundation for the study on empirical relationship between the soil shear wave velocity and soil depths in Kashgar city.In this paper,based on statistical studies of the empirical relationships between the soil shear wave velocity and soil depth,according to the unit division of Kashi city landform,we described the formation lithology of different geomorphic units,collected shear wave velocity data of the seismic microzonation in Kashi city and nearby seismic safety evaluation,analyzed the shear wave velocity data.Then we used three statistics regression analysis method most commonly used today to give respectively the empirical relationship between shear wave velocity and soil depths of conventional soils such as silt,silty clay,silt,sand and gravel in two geomorphic units of alluvial plains in the south of the Ake Tagg mountain area(Ⅰ area)and alluvial plain of the Tuman RiverKyzyl River(Ⅱ area).Through statistical study we find that the fitting relationship ofⅡ-2's has a higher precision,and in fitting relationships,the power function model is primary,the polynomial is less important,and there is no linear statistical relationship.The analysis shows that the statistical formula of shear wave velocity and the depth of the recommendation is reliable,although there is no wave velocity test site for reference,providing the soil background information and analysis basis for the city of Kashi to implement earthquake disaster mitigation planning and soil seismic response analysis.
The shear wave velocity of soil is one of the most widely used parameters of geotechnical engineering investigation and seismic safety evaluation.It is indispensable for the determination of site classification and soil response calculation,and is also indispensable for calculating the predominant period of building site,judging liquefaction of sand foundation,test the result of foundation soil reinforcement treatment and elastic modulus.In this project,when there is no measured shear wave velocity according to the standard penetration value or the depth of soil layer using the statistical relationship for soil layer shear wave velocity,and with a large number of ongoing engineering constructions in the same city,the repetition of shear wave velocity testing not only affects the progress of the project,but also increases the project investment.Therefore,it is reasonable to assume that the empirical relationship between the soil shear wave velocity and the depth of soil,which will accelerate the construction of major projects in the process,has significant social and economic benefits.Since the 1970s,scholars at home and abroad(e.g.,Hardin[Year])that conduct research on the shear wave velocity of statistical relationships believe that the shear wave velocity and the depth of the soil layer have better statistical relationships,which can be mainly divided into three types of the power function,linear function and a polynomial.Kashi is an ancient border city of the western motherland with a history of over two thousand years.Kashi city decided in 2008 to carry out the seismic microzonation.The working range was105km2,in which 105drill holes were laid,and then more than 1600test points of the shear wave velocity were obtained.This work laid the foundation for the study on empirical relationship between the soil shear wave velocity and soil depths in Kashgar city.In this paper,based on statistical studies of the empirical relationships between the soil shear wave velocity and soil depth,according to the unit division of Kashi city landform,we described the formation lithology of different geomorphic units,collected shear wave velocity data of the seismic microzonation in Kashi city and nearby seismic safety evaluation,analyzed the shear wave velocity data.Then we used three statistics regression analysis method most commonly used today to give respectively the empirical relationship between shear wave velocity and soil depths of conventional soils such as silt,silty clay,silt,sand and gravel in two geomorphic units of alluvial plains in the south of the Ake Tagg mountain area(Ⅰ area)and alluvial plain of the Tuman RiverKyzyl River(Ⅱ area).Through statistical study we find that the fitting relationship ofⅡ-2's has a higher precision,and in fitting relationships,the power function model is primary,the polynomial is less important,and there is no linear statistical relationship.The analysis shows that the statistical formula of shear wave velocity and the depth of the recommendation is reliable,although there is no wave velocity test site for reference,providing the soil background information and analysis basis for the city of Kashi to implement earthquake disaster mitigation planning and soil seismic response analysis.
引文
[1]李帅,赵纯青,唐丽华.剪切波速在判定石河子市某建设场地类别中的应用[J].内陆地震,2012,26(2):180-186.LI Shuai,ZHAO Chun-qing,TANG Li-hua.Application on Judgment of Construction Site Classification in Shihezi with Shear Wave Velocity[J].Inland Earthquake.2012,26(2):180-186.(in Chinese)
[2]刘红帅,郑桐,齐文浩等.常规土类剪切波速与埋深的关系分析[J].岩土工程学报,2010,32(7):1142-1149.LIU Hong-shuai,ZHENG Tong,QI Wen-hao,et al.Relationship between Shear Wave Velocity and Depth of Conventional Soils[J].Chinese Journal of Geotechnical Engineering,2010,32(7):1142-1149.(in Chinese)
[3]王广军,苏经宇.连云港碱厂层状土剪切波速沿深度变化的推测[J].勘察科学技术,1986(3):35-38.WANG Guang-jun,SU Jing-yu.Prediction of shear wave velocity along depth of soils in Lianyugang Alkali Factory[J].Site Investigation Science and Technology,1986(3):35-38.(in Chinese)
[4]陈国兴,徐建龙,袁灿勤.南京城区岩土体剪切波速与土层深度的关系[J].南京建筑工程学院学报,1998,45(2):32-37.CHEN Guo-xing,XU Jian-long,YUAN Can-qin.Relation between Depth and Shear Wave Velocity of Soil and Bedrock in Nanjing City[J].Journal of Nanjing Architectural and Civil Engineering Institute,1998,45(2):32-37.(in Chinese)
[5]齐文浩,刘德东,兰景,等.西安阎良区土层剪切波速统计分析[J].防灾科技学院学报,2008,10(4):10-12.QI Wen-hao,LIU De-dong,LAN Jing,et al.Statistical Analysis of Soil Layers'Shear Wave in Yanliang,Xi'an[J].J.of Institute of Disaster Prevention,2008,10(4):10-12.(in Chinese)
[6]战吉艳,陈国兴,刘建达.苏州城区深软场地土剪切波速与土层深度的经验关系[J].世界地震工程,2009,25(2):11-17.ZHAN Ji-yan,CHEN Guo-xing,LIU Jian-da.Empirical Relationship between Shear Wave Velocity and Soil Depth on Deep Soft Sites in Urban Area of Suzhou City[J].World Information On Earthquake Engineering,2009,25(2):11-17.(in Chinese)
[7]李平,薄景山,孙有为,等.西昌市场地剪切波速与土层深度经验关系[J].世界地震工程,2012,26(4):13-17.Li Ping,Bo Jing-shan,Sun You-wei,et al.Empirical Relationship between Shear Wave Velocities and Soil Depths in Xichang City[J].World Information On Earthquake Engineering,2012,26(4):13-17.(in Chinese)
[8]齐鑫,丁浩.下辽河平原区剪切波速与土层埋深关系分析[J].世界地震工程,2012,28(3):151-156.Qi Xin,Ding Hao.Analysis of Relationship btween Shear Wave Velocity and Depth of Soil Layers in Downstream Liaohe River plain[J].World Information On Earthquake Engineering,2012,28(3):151-156.(in Chinese)
[9]郭明珠,贾连军,铁瑞,等.剪切波速测试方法的现状分析[J].西北地震学报,2011,B08:21-23.GUO Ming-zhu,JIA Lian-jun,TIE Rui,et al.Analysis on Current Situation of Shear-velocity Measurement Method[J].Northwestern Seismological Journal,2011,B08:21-23.(in Chinese)
[10]王兰民袁中夏汪国烈.饱和黄土场地液化的工程初判和详判指标与方法研究[J].地震工程学报,2013,35(1):1-8.WANG Lan-min,YUAN Zhong-xia,WANG Guo-lie.Study on Method for Preliminary and Detailed Evaluation on Liquefaction of Loess Site[J].China earthquake engineering journal,2013,35(1):1-8.(in Chinese)
[2]刘红帅,郑桐,齐文浩等.常规土类剪切波速与埋深的关系分析[J].岩土工程学报,2010,32(7):1142-1149.LIU Hong-shuai,ZHENG Tong,QI Wen-hao,et al.Relationship between Shear Wave Velocity and Depth of Conventional Soils[J].Chinese Journal of Geotechnical Engineering,2010,32(7):1142-1149.(in Chinese)
[3]王广军,苏经宇.连云港碱厂层状土剪切波速沿深度变化的推测[J].勘察科学技术,1986(3):35-38.WANG Guang-jun,SU Jing-yu.Prediction of shear wave velocity along depth of soils in Lianyugang Alkali Factory[J].Site Investigation Science and Technology,1986(3):35-38.(in Chinese)
[4]陈国兴,徐建龙,袁灿勤.南京城区岩土体剪切波速与土层深度的关系[J].南京建筑工程学院学报,1998,45(2):32-37.CHEN Guo-xing,XU Jian-long,YUAN Can-qin.Relation between Depth and Shear Wave Velocity of Soil and Bedrock in Nanjing City[J].Journal of Nanjing Architectural and Civil Engineering Institute,1998,45(2):32-37.(in Chinese)
[5]齐文浩,刘德东,兰景,等.西安阎良区土层剪切波速统计分析[J].防灾科技学院学报,2008,10(4):10-12.QI Wen-hao,LIU De-dong,LAN Jing,et al.Statistical Analysis of Soil Layers'Shear Wave in Yanliang,Xi'an[J].J.of Institute of Disaster Prevention,2008,10(4):10-12.(in Chinese)
[6]战吉艳,陈国兴,刘建达.苏州城区深软场地土剪切波速与土层深度的经验关系[J].世界地震工程,2009,25(2):11-17.ZHAN Ji-yan,CHEN Guo-xing,LIU Jian-da.Empirical Relationship between Shear Wave Velocity and Soil Depth on Deep Soft Sites in Urban Area of Suzhou City[J].World Information On Earthquake Engineering,2009,25(2):11-17.(in Chinese)
[7]李平,薄景山,孙有为,等.西昌市场地剪切波速与土层深度经验关系[J].世界地震工程,2012,26(4):13-17.Li Ping,Bo Jing-shan,Sun You-wei,et al.Empirical Relationship between Shear Wave Velocities and Soil Depths in Xichang City[J].World Information On Earthquake Engineering,2012,26(4):13-17.(in Chinese)
[8]齐鑫,丁浩.下辽河平原区剪切波速与土层埋深关系分析[J].世界地震工程,2012,28(3):151-156.Qi Xin,Ding Hao.Analysis of Relationship btween Shear Wave Velocity and Depth of Soil Layers in Downstream Liaohe River plain[J].World Information On Earthquake Engineering,2012,28(3):151-156.(in Chinese)
[9]郭明珠,贾连军,铁瑞,等.剪切波速测试方法的现状分析[J].西北地震学报,2011,B08:21-23.GUO Ming-zhu,JIA Lian-jun,TIE Rui,et al.Analysis on Current Situation of Shear-velocity Measurement Method[J].Northwestern Seismological Journal,2011,B08:21-23.(in Chinese)
[10]王兰民袁中夏汪国烈.饱和黄土场地液化的工程初判和详判指标与方法研究[J].地震工程学报,2013,35(1):1-8.WANG Lan-min,YUAN Zhong-xia,WANG Guo-lie.Study on Method for Preliminary and Detailed Evaluation on Liquefaction of Loess Site[J].China earthquake engineering journal,2013,35(1):1-8.(in Chinese)
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