土工基础

›› 2015, Vol. 29 ›› Issue (4): 110-115.

• 工程实录 • 上一篇    下一篇

武汉地区土体动力非线性黏弹性模型及其ABAQUS软件的实现

赵旭清   

  1. （中铁十六局集团有限公司， 北京 100018）
  • 收稿日期:2015-05-22 出版日期:2015-08-20 发布日期:2015-11-06
  • 作者简介:赵旭清(1970-)，男，高级工程师，博士，研究方向为交通土建应用技术。

Determination of Parameters for Davidenkov Constitutive relations Model for Wuhan Silty Soils and Implementation of ABAQUS Software

ZHAO Xuqing   

  1. (China Railway 16th Bureau Group Co. Ltd., Beijing 100018)
  • Received:2015-05-22 Online:2015-08-20 Published:2015-11-06

摘要： 选取武汉地区粉质粘土土样进行了共振柱试验，测得了武汉地区粉质粘土的动剪切模量G、阻尼比μ及动剪切模量比G/Gmax与动剪切应变γ之间的关系。基于试验数据拟合出了Davidenkov骨架曲线的主要参数并利用通用有限元软件ABAQUS，开发了土体动弹塑性本构模型子程序。选择二维粉质粘土自由场作为研究对象进行了有限元非线性地震反应分析，计算结果表明所建模型是准确可靠的。

关键词: 共振柱试验, 土体动非线性黏弹性模型, 自由场, 非线性地震反应分析, ABAQUS软件

Abstract: This paper presents the resonant column test results on Wuhan Silty soil samples. The relationships between the dynamic shear modulus, G; damping ratio, μ; dynamic shear modulus ratio, G/Gmax and the dynamic shear strain are obtained throughout the tests. The parameters that describe the Davidenkov skeleton curve are obtained through the test data fitting method. The subroutine module for the dynamic elasticplastic constitutive model is developed and is implemented into a two dimensional ABAQUS numerical model for nonlinear seismic reaction of silty soils.

Key words: Resonant Column Test, Dynamic Nonlinear Viscoelastic Constitutive Model of Soils, Free Field, Nonlinear Earthquake Response Analysis, ABAQUS Software