上海地区第⑤_2层砂质粉土的液化特性试验研究
|
摘要
针对目前上海地区第⑤2层砂质粉土的液化特性尚缺乏研究的实际问题,结合上海某电厂海底隧道的工程实例,基于动三轴试验,对场地内第⑤2层土体动力特性进行研究.内容包括往返作用力、固结压力、结构性、颗粒组成等因素对于液化特性的影响,确定了场地内饱和粉性土的抗液化强度指标等.通过Seed简化法,判别该土层地震液化可能性,给工程场地抗震设计及液化防治提供了科学依据,同时对类似工程的可液化场地处理可以有良好的借鉴.
Based on a case study of underground projects at a power station in Shanghai area,the researches on the dynamic characteristics of liquefiable sandy silt are conducted by means of dynamic triaxial tests with a consideration of such influencing factors on liquefaction as cyclic stress,consolidation pressure,structure,particle composition and parameters for liquefaction evaluation are obtained.The seed simplified method is adopted to verify the results of the laboratory method.Some scientific conclusions on earthquake resistant design of this project are proposed and can be referred to the similar engineering projects of ground improvement for liquefaction mitigation.
Based on a case study of underground projects at a power station in Shanghai area,the researches on the dynamic characteristics of liquefiable sandy silt are conducted by means of dynamic triaxial tests with a consideration of such influencing factors on liquefaction as cyclic stress,consolidation pressure,structure,particle composition and parameters for liquefaction evaluation are obtained.The seed simplified method is adopted to verify the results of the laboratory method.Some scientific conclusions on earthquake resistant design of this project are proposed and can be referred to the similar engineering projects of ground improvement for liquefaction mitigation.
引文
[1]刘颖,谢君斐.砂土震动液化[M].北京:地震出版社,1984.LIU Ying,XIE Junfei.Sandy soil seismic liquefaction[M].Beijing:Seismology Press,1984.
[2]钱家欢,殷宗泽.土工原理与计算[M].北京:水利电力出版社,l996.QIAN Jiahuan,YIN Zongze.Geotechnical principle and calculation[M].Beijing:China Water Power Press,1996.
[3]石兆吉,郁寿松,王余庆,等.饱和轻亚粘土地基液化可能性判别[J].地震工程与工程振动,1984,4(3):71.SHI Zhaoji,YU Shousong,WANG Yuqing,et al.Theliquefaction possibility discri mination of saturated light mild clay[J].Journal of Earthquake Engineering and Engineering Vibration,1984,4(3):71.
[4]Hwang J H,Yang C W.Verification of critical strength curve by Tai wan Chi earthquake date[J].Soil Dynamics and EarthquakeEngineering,2001,21(3):237.
[5]谢定义.饱和砂土体液化的若干问题[J].岩土工程学报,1992,14(3):90.XIE Dingyi.Some problems about liquefaction of saturated sand[J].Chinese Journal of Geotechnical Engineering,1992,14(3):90.
[6]李立云,崔杰,景立平,等.饱和粉土振动液化分析[J].岩土力学,2005,26(10):1663.LI Liyun,CUI Jie,JING Liping,et al.Study on liquefaction of saturated silty soil under cyclic loading[J].Rock and Soil Mechanics,2005,26(10):1663.
[7]中华人民共和国水利部.SL237—1999土工试验规程[S].北京:中国水利水电出版社,1999.Ministry of Water Resources P R C.SL237—1999Specification of soil test[S].Beijing:China Water Power Press,1999.
[8]于濂洪,王波.饱和粉土振动孔隙水压力的试验研究[J].大连大学学报,1999,20(4):59.YU Lianhong,WANG Bo.Study on pore water pressure of saturated and disturbed sandy loam during cyclic loading[J].Journal of Dalian University,1999,20(4):59.
[9]林霖.现代黄河水下三角洲粉土动力特性及液化破坏研究[D].青岛:中国海洋大学海洋地球科学学院,2003.LIN Lin.Research on dynamic property andliquefaction related damages of silt in modern yellow river submarine delta[D].Qingdao:Ocean University of China.College of Marine Geosciences,2003.
[10]Polito C P,Martin J R.Effects of nonplastic fines on the liquefaction resistance of sands[J].Journal of Geotechnical and Geoenvironmental Engineering,2001,127(5):408.
[11]Seed H B,Idriss I M,Arango I.Evaluation of liquefaction potential using field performance data[J].Journal of the Geotechnical Engineering Division,1983,109(3):458.
[12]《工程地质手册》编委会.工程地质手册[M].4版.北京:中国建筑工业出版社,2007.The editorial board of the engineering geology manual.The Engineering Geology Manual[M].Beijing:China Architecture and Building Press,2007.
[13]庄之敬.可液化土的地震液化试验及数值模拟研究[D].上海:同济大学土木工程学院,2008.ZHUANG Zhijing.Numerical si mulation and experi mental research onliquefiable soils during earthquakes[D].Shanghai:Tongji University.School of Civil Engineering,2008.
[2]钱家欢,殷宗泽.土工原理与计算[M].北京:水利电力出版社,l996.QIAN Jiahuan,YIN Zongze.Geotechnical principle and calculation[M].Beijing:China Water Power Press,1996.
[3]石兆吉,郁寿松,王余庆,等.饱和轻亚粘土地基液化可能性判别[J].地震工程与工程振动,1984,4(3):71.SHI Zhaoji,YU Shousong,WANG Yuqing,et al.Theliquefaction possibility discri mination of saturated light mild clay[J].Journal of Earthquake Engineering and Engineering Vibration,1984,4(3):71.
[4]Hwang J H,Yang C W.Verification of critical strength curve by Tai wan Chi earthquake date[J].Soil Dynamics and EarthquakeEngineering,2001,21(3):237.
[5]谢定义.饱和砂土体液化的若干问题[J].岩土工程学报,1992,14(3):90.XIE Dingyi.Some problems about liquefaction of saturated sand[J].Chinese Journal of Geotechnical Engineering,1992,14(3):90.
[6]李立云,崔杰,景立平,等.饱和粉土振动液化分析[J].岩土力学,2005,26(10):1663.LI Liyun,CUI Jie,JING Liping,et al.Study on liquefaction of saturated silty soil under cyclic loading[J].Rock and Soil Mechanics,2005,26(10):1663.
[7]中华人民共和国水利部.SL237—1999土工试验规程[S].北京:中国水利水电出版社,1999.Ministry of Water Resources P R C.SL237—1999Specification of soil test[S].Beijing:China Water Power Press,1999.
[8]于濂洪,王波.饱和粉土振动孔隙水压力的试验研究[J].大连大学学报,1999,20(4):59.YU Lianhong,WANG Bo.Study on pore water pressure of saturated and disturbed sandy loam during cyclic loading[J].Journal of Dalian University,1999,20(4):59.
[9]林霖.现代黄河水下三角洲粉土动力特性及液化破坏研究[D].青岛:中国海洋大学海洋地球科学学院,2003.LIN Lin.Research on dynamic property andliquefaction related damages of silt in modern yellow river submarine delta[D].Qingdao:Ocean University of China.College of Marine Geosciences,2003.
[10]Polito C P,Martin J R.Effects of nonplastic fines on the liquefaction resistance of sands[J].Journal of Geotechnical and Geoenvironmental Engineering,2001,127(5):408.
[11]Seed H B,Idriss I M,Arango I.Evaluation of liquefaction potential using field performance data[J].Journal of the Geotechnical Engineering Division,1983,109(3):458.
[12]《工程地质手册》编委会.工程地质手册[M].4版.北京:中国建筑工业出版社,2007.The editorial board of the engineering geology manual.The Engineering Geology Manual[M].Beijing:China Architecture and Building Press,2007.
[13]庄之敬.可液化土的地震液化试验及数值模拟研究[D].上海:同济大学土木工程学院,2008.ZHUANG Zhijing.Numerical si mulation and experi mental research onliquefiable soils during earthquakes[D].Shanghai:Tongji University.School of Civil Engineering,2008.
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