砂土液化判别的液化系数法
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摘要
在标准贯入试验法判别砂土液化的基础上,提出了砂土液化判别的液化系数法,即应用各贯入试验点标准贯入锤击数的临界值与实测值之比,并结合液化系数曲线,对砂土液化程度进行判别.以南水北调中线工程滹沱河段引水干渠地基砂土液化的评价为例,应用液化系数法对地基各土层的液化系数进行对比分析,探明液化程度较严重土层的存在位置,从而为地基处理的设计和施工提供更明确的依据.实际应用表明,该方法简便明了,具有较高的实用性.
The liquefaction coefficient method is suggested based on the Standard Penetration Test(SPT),through the ratio of the critical values and its SPT data, and with the liquefaction coefficient curves together to judge sandy soil liquefaction degree,the sandy soil liquefaction methods are discussed. The main canal of the mid-line project of the water-transferring from south to north connected with the Hutuo River is taken as an example, the coefficient method is used to analyze and contrast the liquefied condition of sandy ground soil and the place of the serous liquefied soil is proved up. Thus the more evident base is offered for the design and construction of ground treatment. The method is proved to be simple, evident and more valuable by application.
The liquefaction coefficient method is suggested based on the Standard Penetration Test(SPT),through the ratio of the critical values and its SPT data, and with the liquefaction coefficient curves together to judge sandy soil liquefaction degree,the sandy soil liquefaction methods are discussed. The main canal of the mid-line project of the water-transferring from south to north connected with the Hutuo River is taken as an example, the coefficient method is used to analyze and contrast the liquefied condition of sandy ground soil and the place of the serous liquefied soil is proved up. Thus the more evident base is offered for the design and construction of ground treatment. The method is proved to be simple, evident and more valuable by application.
引文
[1]李顺群,王丽君.对地基土液化判别方法的探讨[J].辽宁工学院学报,2002,22(2):29-30.
[2]孙敬东,邵萍萍,张柏山.砂土液化的防范措施[J].岩土工程界,2001,4(6):29.
[3]陈文化,孙巨平,徐兵.砂土地震液化的研究现状及发展趋势[J].世界地震工程,1999,15(1):16-24.
[4]刘惠珊,张在明.地震区的场地与地基基础[M].北京:中国建筑工业出版社,1994.
[5] GB 50021-2001,岩土工程勘察规范[S].
[6]门福录.饱水土层中的地震波和砂土液化[A].地震工程文集[C].北京:地震出版社,1992.74-84.
[7] GB 50011-2001,建筑抗震设计规范[S].
[8]刘惠珊,张在明.地震区的场地与地基基础[M].北京:中国建筑工业出版社,1994.173.
[9] GB 50287-99,水利水电工程地质勘察规范[S].
[10]顾淦臣.土石坝地震工程[M].南京:河海大学出版社,1988.206-207.
[2]孙敬东,邵萍萍,张柏山.砂土液化的防范措施[J].岩土工程界,2001,4(6):29.
[3]陈文化,孙巨平,徐兵.砂土地震液化的研究现状及发展趋势[J].世界地震工程,1999,15(1):16-24.
[4]刘惠珊,张在明.地震区的场地与地基基础[M].北京:中国建筑工业出版社,1994.
[5] GB 50021-2001,岩土工程勘察规范[S].
[6]门福录.饱水土层中的地震波和砂土液化[A].地震工程文集[C].北京:地震出版社,1992.74-84.
[7] GB 50011-2001,建筑抗震设计规范[S].
[8]刘惠珊,张在明.地震区的场地与地基基础[M].北京:中国建筑工业出版社,1994.173.
[9] GB 50287-99,水利水电工程地质勘察规范[S].
[10]顾淦臣.土石坝地震工程[M].南京:河海大学出版社,1988.206-207.
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