地裂缝带Q_3黄土强度与流变长期强度关系研究
|
摘要
西安地区是我国地裂缝最为发育,灾害最为严重的地区,随着城市建设的不断发展,尤其是地铁工程的陆续进行,地裂缝灾害成为工程建设的制约因素。考虑到地裂缝灾害的严重性,通过对西安地区长安地裂缝带Q_3原状黄土进行了不同围压下的固结不排水(CU)常规三轴试验,在试验基础上,分析了地裂缝带Q_3原状黄土的应力-应变关系及试样破坏类型,建立了地裂缝带Q_3原状黄土的应力-应变关系模型,获得了地裂缝带Q_3原状黄土不同应变量所对应的抗剪强度值,并分别用摩尔圆法和σ_1-σ_3应力平面法求得了抗剪强度参数。结合蠕变试验曲线,绘制了长期强度曲线,建立了长期强度方程,获得了长期强度方程参数。分析了流变瞬时强度及长期强度值与不同应变量所对应抗剪强度值的关系。
Xi'an region can be the most developed area of ground fissures and the associated geo-hazard in China,with the continuous development of city construction,especially in succession of metro engineering,ground fissure disasters become restricting factors of the construction of the project. Considering the seriousness of the ground fissure disasters,through consolidated undrained conventional triaxial test with different confining pressures are made to Chang'an ground fissures belt Q_3 undisturbed-loess in Xi'an region. Based on the experiments,the stress-strain relationship and failure patterns under different confining pressures of ground fissures belt Q_3 undisturbed-loess were analyzed,stress-strain relation model of ground fissure belt Q_3 undisturbed-loess were established,and the shear strength values under different variables were obtained. Using Mohr's circle method and σ_1-σ_3 stress plane method to get the shear strength parameters. Combined with the creep test curve,drew the long-term strength curve,established long-term strength equation,and got the long-term strength equation parameters,analyzed between the rheological instantaneous strength,the long-term strength value and the shear strength values under different variables.
Xi'an region can be the most developed area of ground fissures and the associated geo-hazard in China,with the continuous development of city construction,especially in succession of metro engineering,ground fissure disasters become restricting factors of the construction of the project. Considering the seriousness of the ground fissure disasters,through consolidated undrained conventional triaxial test with different confining pressures are made to Chang'an ground fissures belt Q_3 undisturbed-loess in Xi'an region. Based on the experiments,the stress-strain relationship and failure patterns under different confining pressures of ground fissures belt Q_3 undisturbed-loess were analyzed,stress-strain relation model of ground fissure belt Q_3 undisturbed-loess were established,and the shear strength values under different variables were obtained. Using Mohr's circle method and σ_1-σ_3 stress plane method to get the shear strength parameters. Combined with the creep test curve,drew the long-term strength curve,established long-term strength equation,and got the long-term strength equation parameters,analyzed between the rheological instantaneous strength,the long-term strength value and the shear strength values under different variables.
引文
[1]李永善.西安地裂缝[M].北京:地震出版社,1986.(Li Yongshan.Xi'an ground fissures[M].Beijing:Earthquake Press,1986.(in Chinese))
[2]张家明.西安地裂缝研究[M].西安:西北大学出版社,1990.(Zhang Jiaming.Research on ground fissures in Xi'an region[M].Xi'an:Northwestern University Press,1990.(in Chinese))
[3]李永善.西安地裂缝及渭河盆地活断层研究[M].北京:地震出版社,1992.(Li Yongshan,et al.Research on Xi’an ground fissure and active fault of the Wei-he Basin.Beijing:Earthquake Press,1992.(in Chinese))
[4]李新生,王静,王万平,等.西安地铁2号线沿线地裂缝特征、危害及对策[J].工程地质学报,2007,15(4):463-468.(Li Xinsheng,Wang Jing,Wang Wanping,et al.The characteristics,harm and countermeasure of Xi’an ground fissures along the metro line 2[J]Journal of Engineering Geology,2007,15(4):463-468.(in Chinese))
[5]彭建兵,张俊,苏生瑞,等.渭河盆地活动断裂与地质灾害[M].西安:西北大学出版社,1992.(Peng Jianbing,Zhang Jun,Su Shengrui,et al.The active faults and geological disasters of the Wei-he basin[M].Xi’an:Northwestern University Press,1992.(in Chinese))
[6]王景明,王春梅,刘科.地裂缝及其灾害研究的新进展[J].地球科学进展,2001,16(3):303-313.(Wang Jingming,Wang Chunmei,Liu Ke.The new progress in the study of ground fissures and disasters[J].Earth Science Progress,2001,16(3):303-313.(in Chinese))
[7]王景明.地裂缝及其灾害的理论与应用[M].西安:陕西科学技术出版社,2000.(Wang Jingming.The theory and application of ground fissures and disasters[M].Xi’an:Shaanxi Science and Technology Press,2000.(in Chinese))
[8]刘祖典.黄土力学与工程[M].西安:陕西科学技术出版社,1997.(Liu Zudian.The loess mechanics and engineering[M].Xi’an:Shaanxi Science and Technology Press,1997.(in Chinese))
[9]曾国熙.正常固结黏土不排水剪的归一化性状[A]∥软土地基学术讨论会论文选集[C].北京:水利出版社1980.(Zeng Guoxi.The normalization characters of normally consolidated clay undrained shear[A]∥Selection of soft soil foundation seminar papers[C].Beijing:Hydraulic Press,1980.(in Chinese))
[10]沈珠江.考虑剪胀性土和石料的非线性应力应变模式[J].水利水运科学研究,1986(4):1-14.(Shen Zhujiang.Nonlinear stress-strain model of dilatancy soil and stone[J].Waterway Transportation Scientific Research,1986(4):1-14.(in Chinese))
[11]何力军,孔令伟.土的应力-应变关系的一种描述模式[J].工程地质学报,2010,18(6):900-905.(He Lijun,Kong Lingwei.A description of the model of the soil stress-strain relationship[J].Journal of Engineering Geology,2010,18(6):900-905.(in Chinese))
[12]C.C维亚洛夫.土力学的流变原理[M].杜余培译.北京:科学技术出版社,1987.(C.C Olivia rove.Rheological principles of soil mechanics.Du Yupei translation[M].Beijing:Science and Technology Press,1987.(in Chinese))
[13]孙钧.岩土材料流变及其工程应用[M].北京:中国建筑工业出版社,1999.(Sun Jun.Geotechnical material rheological and its engineering application[M].Beijing:China Building Industry Press,1999.(in Chinese))
[14]刘沐宇,徐长佑.硬石膏的流变特性及其长期强度的确定[J].中国矿业,2000,9(2):53-55.(Liu Muyu,Xu Changyou.The determination of the rheological characteristics and long-term strength of anhydrite[J].China’s Mining,2000,9(2):53-55.(in Chinese))
[15]董卫军.软土流变特性室内试验研究及长期强度的确定[D].南京:河海大学,2007.(Dong Weijun.The rheological properties of the soft soil laboratory test research and the long-term strength determine[D].Nanjing:Hohai University,2007.(in Chinese))
[16]土工试验规程(SL 237-1999)[S].北京:中国水利水电出版社,1999.(Rules of geotechnical testing(SL237-1999)[S].Beijing:China Water Power Press,1999.(in Chinese))
[17]土工试验技术手册[M].北京:人民交通出版社,2003.(Soil test technical manual[M].Beijing:China Communications Press,2003.(in Chinese))
[18]袁聚云,徐超.土工试验与原位测试[M].上海:同济大学出版社,2004.(Yuan Juyun,Xu Chao.Geotechnical tests and in-situ tests[M].Shanghai:Tongji University Press,2004.(in Chinese))
[19]陈仲颐,周景星,王洪谨.土力学[M].北京:清华大学出版社,1995.(Chen Zhongyi,Zhou Jingxing,Wang Hongjin.Soil mechanics[M].Beijing:Tsinghua University Press,1995.(in Chinese))
[20]龙万学,陈开圣,肖涛,等.非饱和红黏土三轴试验研究[J].岩土力学,2009,30(2):28-33.(Long Wanxue,Chen Kaisheng,Xiao Tao,et al.Research of general triaxial test of unsaturated red clay[J].Rock and Soil Mechanics,2009,30(2):28-33.(in Chinese))
[21]商翔宇,周国庆,赵光思,等.用σ1-σ3应力平面探讨Rankine土压力理论[A]∥第一届全国土力学教学研讨会论文集[C].441-445.(Shang Xiangyu,Zhou Guoqing,Zhao Guangsi,et al.Rankine’s earth pressure theory is discussed withσ1-σ3stress plane[A]∥The First National Conference on Soil Mechanics Teaching[C].441-445.(in Chinese))
[2]张家明.西安地裂缝研究[M].西安:西北大学出版社,1990.(Zhang Jiaming.Research on ground fissures in Xi'an region[M].Xi'an:Northwestern University Press,1990.(in Chinese))
[3]李永善.西安地裂缝及渭河盆地活断层研究[M].北京:地震出版社,1992.(Li Yongshan,et al.Research on Xi’an ground fissure and active fault of the Wei-he Basin.Beijing:Earthquake Press,1992.(in Chinese))
[4]李新生,王静,王万平,等.西安地铁2号线沿线地裂缝特征、危害及对策[J].工程地质学报,2007,15(4):463-468.(Li Xinsheng,Wang Jing,Wang Wanping,et al.The characteristics,harm and countermeasure of Xi’an ground fissures along the metro line 2[J]Journal of Engineering Geology,2007,15(4):463-468.(in Chinese))
[5]彭建兵,张俊,苏生瑞,等.渭河盆地活动断裂与地质灾害[M].西安:西北大学出版社,1992.(Peng Jianbing,Zhang Jun,Su Shengrui,et al.The active faults and geological disasters of the Wei-he basin[M].Xi’an:Northwestern University Press,1992.(in Chinese))
[6]王景明,王春梅,刘科.地裂缝及其灾害研究的新进展[J].地球科学进展,2001,16(3):303-313.(Wang Jingming,Wang Chunmei,Liu Ke.The new progress in the study of ground fissures and disasters[J].Earth Science Progress,2001,16(3):303-313.(in Chinese))
[7]王景明.地裂缝及其灾害的理论与应用[M].西安:陕西科学技术出版社,2000.(Wang Jingming.The theory and application of ground fissures and disasters[M].Xi’an:Shaanxi Science and Technology Press,2000.(in Chinese))
[8]刘祖典.黄土力学与工程[M].西安:陕西科学技术出版社,1997.(Liu Zudian.The loess mechanics and engineering[M].Xi’an:Shaanxi Science and Technology Press,1997.(in Chinese))
[9]曾国熙.正常固结黏土不排水剪的归一化性状[A]∥软土地基学术讨论会论文选集[C].北京:水利出版社1980.(Zeng Guoxi.The normalization characters of normally consolidated clay undrained shear[A]∥Selection of soft soil foundation seminar papers[C].Beijing:Hydraulic Press,1980.(in Chinese))
[10]沈珠江.考虑剪胀性土和石料的非线性应力应变模式[J].水利水运科学研究,1986(4):1-14.(Shen Zhujiang.Nonlinear stress-strain model of dilatancy soil and stone[J].Waterway Transportation Scientific Research,1986(4):1-14.(in Chinese))
[11]何力军,孔令伟.土的应力-应变关系的一种描述模式[J].工程地质学报,2010,18(6):900-905.(He Lijun,Kong Lingwei.A description of the model of the soil stress-strain relationship[J].Journal of Engineering Geology,2010,18(6):900-905.(in Chinese))
[12]C.C维亚洛夫.土力学的流变原理[M].杜余培译.北京:科学技术出版社,1987.(C.C Olivia rove.Rheological principles of soil mechanics.Du Yupei translation[M].Beijing:Science and Technology Press,1987.(in Chinese))
[13]孙钧.岩土材料流变及其工程应用[M].北京:中国建筑工业出版社,1999.(Sun Jun.Geotechnical material rheological and its engineering application[M].Beijing:China Building Industry Press,1999.(in Chinese))
[14]刘沐宇,徐长佑.硬石膏的流变特性及其长期强度的确定[J].中国矿业,2000,9(2):53-55.(Liu Muyu,Xu Changyou.The determination of the rheological characteristics and long-term strength of anhydrite[J].China’s Mining,2000,9(2):53-55.(in Chinese))
[15]董卫军.软土流变特性室内试验研究及长期强度的确定[D].南京:河海大学,2007.(Dong Weijun.The rheological properties of the soft soil laboratory test research and the long-term strength determine[D].Nanjing:Hohai University,2007.(in Chinese))
[16]土工试验规程(SL 237-1999)[S].北京:中国水利水电出版社,1999.(Rules of geotechnical testing(SL237-1999)[S].Beijing:China Water Power Press,1999.(in Chinese))
[17]土工试验技术手册[M].北京:人民交通出版社,2003.(Soil test technical manual[M].Beijing:China Communications Press,2003.(in Chinese))
[18]袁聚云,徐超.土工试验与原位测试[M].上海:同济大学出版社,2004.(Yuan Juyun,Xu Chao.Geotechnical tests and in-situ tests[M].Shanghai:Tongji University Press,2004.(in Chinese))
[19]陈仲颐,周景星,王洪谨.土力学[M].北京:清华大学出版社,1995.(Chen Zhongyi,Zhou Jingxing,Wang Hongjin.Soil mechanics[M].Beijing:Tsinghua University Press,1995.(in Chinese))
[20]龙万学,陈开圣,肖涛,等.非饱和红黏土三轴试验研究[J].岩土力学,2009,30(2):28-33.(Long Wanxue,Chen Kaisheng,Xiao Tao,et al.Research of general triaxial test of unsaturated red clay[J].Rock and Soil Mechanics,2009,30(2):28-33.(in Chinese))
[21]商翔宇,周国庆,赵光思,等.用σ1-σ3应力平面探讨Rankine土压力理论[A]∥第一届全国土力学教学研讨会论文集[C].441-445.(Shang Xiangyu,Zhou Guoqing,Zhao Guangsi,et al.Rankine’s earth pressure theory is discussed withσ1-σ3stress plane[A]∥The First National Conference on Soil Mechanics Teaching[C].441-445.(in Chinese))