| 桩土界面荷载传递模型的改进及其数值实现 |
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| 引用本文： | 蒲诃夫,郑俊杰,章荣军. 桩土界面荷载传递模型的改进及其数值实现[J]. 华中科技大学学报(城市科学版), 2010, 27(1): 84-88 |
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| 作者姓名： | 蒲诃夫 郑俊杰 章荣军 |
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| 作者单位： | 华中科技大学,土木工程与力学学院,湖北,武汉,430074 |
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| 摘 要： | 目前,在数值模拟中,桩土界面的刚度缺乏简便可靠的确定方法.针对这一问题,本文提出了桩土界面改进双曲线模型,该模型中初始刚度由极限剪应力和极限相对位移的比值来确定,可考虑桩土相对滑移和土体深度效应的影响,并以有限差分软件FLAC3D为平台,利用其内嵌的FISH汇编语言编程,将改进双曲线模型应用到FLAC3D的桩土相互作用的模型中.最后,通过实例验证,将本文方法的计算值、FLAC3D内嵌理想弹塑性模型的计算值与相关文献中的结果进行对比.结果表明:本文提出的改进双曲线模型及数值实现是合理的,能够更为合理地模拟桩土共同作用.
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| 关 键 词： | 桩土界面 荷载传递 双曲线模型 数值模拟 |
Improvement on the Load Transfer Model of Pile-Soil Interface and its Numerical Simulation |
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| PU He-fu,ZHENG Jun-jie,ZHANG Rong-jun. Improvement on the Load Transfer Model of Pile-Soil Interface and its Numerical Simulation[J]. Journal of Huazhong University of Science and Technology, 2010, 27(1): 84-88 |
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| Authors: | PU He-fu ZHENG Jun-jie ZHANG Rong-jun |
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| Affiliation: | PU He-fu,ZHENG Jun-jie,ZHANG Rong-jun(School of Civil Engineering , Mechanics,HUST,Wuhan 430074,China) |
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| Abstract: | At present,in the numerical simulation,there lacks a simple and reliable method to determine the stiffness of the pile-soil interface.This paper proposed an improved hyperbolic model for the pile-soil interface,in which the stiffness of the interface is determined by the ratio of the ultimate shear stress to the ultimate relative displacement.Based on the finite difference code FLAC3D,the built-in assembly language,FISH,was then used to compile the improved hyperbolic model,which was later used in the simul... |
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| Keywords: | pile-soil interface load transfer hyperbolic model numerical simulation |
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