考虑深度效应的超长单桩荷载传递性状的研究
|
摘要
考虑到目前的超长桩的桩侧荷载传递性状研究,基本上还是基于短桩理论,提出了考虑超长单桩桩侧摩阻力的深度效应的单桩荷载传递函数,并且将荷载传递法和有限元方法结合起来,采用该荷载传递函数来模拟单桩的桩侧荷载传递规律。用反演方法得出了该荷载传递函数的参数。算例表明:考虑深度效应的计算结果比不考虑深度效应的计算结果稍偏大,且与实测值更为接近,其结果更为合理。
Considering that there is little study about shaft resistance transfer behavior of overlength pile and the theory is based on short pile yet,shaft load transfer function of overlength single pile which considering depth influence is presented.Moreover,load transfer method and FEM are combined.The load transfer function mentioned above is used to simulate rule of shaft resistance of single pile.Method of inversion is used to obtain parameters of shaft load transfer function.Example shows that the results that depth effect is considered is greater than the one that depth effect is not considered and the first one is closer to the test result.Considering depth effect is reasonable and necessary.
Considering that there is little study about shaft resistance transfer behavior of overlength pile and the theory is based on short pile yet,shaft load transfer function of overlength single pile which considering depth influence is presented.Moreover,load transfer method and FEM are combined.The load transfer function mentioned above is used to simulate rule of shaft resistance of single pile.Method of inversion is used to obtain parameters of shaft load transfer function.Example shows that the results that depth effect is considered is greater than the one that depth effect is not considered and the first one is closer to the test result.Considering depth effect is reasonable and necessary.
引文
[1]张平,董明阳.对桩基深度效应的探讨[J].沈阳大学学报,2003,15(2):57―59.ZHANG Ping,DONG Ming-yang.A study on depth effect of pile foundation[J].Journal of Shenyang University,2003,15(2):57―59.
[2]李正良.钻孔灌注桩容许承载力公式探讨[J].福州大学学报(自然科学版),1999,27(3):62―66.LI Zheng-liang.Studies of capacity formula for digging and filling pile[J].Journal of Fuzhou University(Natural Science),1999,27(3):62―66.
[3]《桩基工程手册》编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.
[4]邓洪亮.扩底桩深度效应数值解法及其承载力确定方法[J].岩土力学,2002,23(1):97―102.DENG Hong-liang.Numerical solution of depth effect and determination method of bearing capacity for pile with expanded end[J].Rock and Soil Mechanics,2002,23(1):97―102.
[5]Seed H B,Reese L C.The action of soft clay along friction piles[J].ASCE,Transactions,1955,122:731―754.
[6]Kezdi A.The bearing capacity of pile and pile groups[A].Process 4th International Conference on Soil Mechanics&Foundation Engineering[C].New York:[s.n.],1957.46―51.
[7]Kraft L M,Ray R P,Kagawa T.Theoretical t-z Curves[J].Journal of the Geotechnical Engineering Division,ASCE,1981,107(11):1 543―1 561.
[8]洪毓康,陈强华.钻孔灌注桩的荷载传递性能[J].岩土工程学报,1985,7(5):22―35.HONG Yu-kang,CHEN Qiang-hua.Load transfer behaviour of bored piles[J].Chinese Journal of Geotechnical Engineering,1985,7(5):22―35.
[9]徐果明.反演理论及其应用[M].北京:地震出版社,2003.
[2]李正良.钻孔灌注桩容许承载力公式探讨[J].福州大学学报(自然科学版),1999,27(3):62―66.LI Zheng-liang.Studies of capacity formula for digging and filling pile[J].Journal of Fuzhou University(Natural Science),1999,27(3):62―66.
[3]《桩基工程手册》编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.
[4]邓洪亮.扩底桩深度效应数值解法及其承载力确定方法[J].岩土力学,2002,23(1):97―102.DENG Hong-liang.Numerical solution of depth effect and determination method of bearing capacity for pile with expanded end[J].Rock and Soil Mechanics,2002,23(1):97―102.
[5]Seed H B,Reese L C.The action of soft clay along friction piles[J].ASCE,Transactions,1955,122:731―754.
[6]Kezdi A.The bearing capacity of pile and pile groups[A].Process 4th International Conference on Soil Mechanics&Foundation Engineering[C].New York:[s.n.],1957.46―51.
[7]Kraft L M,Ray R P,Kagawa T.Theoretical t-z Curves[J].Journal of the Geotechnical Engineering Division,ASCE,1981,107(11):1 543―1 561.
[8]洪毓康,陈强华.钻孔灌注桩的荷载传递性能[J].岩土工程学报,1985,7(5):22―35.HONG Yu-kang,CHEN Qiang-hua.Load transfer behaviour of bored piles[J].Chinese Journal of Geotechnical Engineering,1985,7(5):22―35.
[9]徐果明.反演理论及其应用[M].北京:地震出版社,2003.
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