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浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (10): 1902-1908    DOI: 10.3785/j.issn.1008-973X.2009.10.027
土木工程、水利工程     
两种径向多圈层土体平面应变模型的对比
王奎华1,杨冬英1,2,张智卿1
(1.浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州310027; 2.苏州科技学院 土木工程学院,江苏 苏州 215011)
Comparison on two kinds of radial multi-zone plane strain models
WANG Kui-hua1, YANG Dong-ying1,2, ZHANG Zhi-qing1
(1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,
Zhejiang University, Hangzhou 310027, China;2. Institute of Civil Engineering, Suzhou University of
Science and Technology, Suzhou 215011, China)
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摘要：

针对土体径向非均质性的多弹簧串联的多圈层平面应变模型在严密性及精确度方面存在的不足的情况,提出基于复刚度传递的多圈层平面应变的严格数学力学模型.对多弹簧串联的多圈层平面应变模型和基于复刚度传递的多圈层平面应变模型进行严格的数学论证,论证表明,前者由于数学力学上不严密,无法退化到均质情况下平面应变精确解；而后者由于数学力学上的严密性,可以退化到均质情况下平面应变精确解.分别通过对多工况条件下土体动力响应（土体复刚度）的分析比较,指出前者在只计算低频阶段桩基动力响应的工况能够近似适用,而对需精确考虑阻尼的工况则不适用.
Abstract:

A complex stiffness transfer model which is rigorous and precise on mathematics and physics was given aiming at the shortage of rigor and precision of multi-springs in series plane stain model used to analyze soil radial inhomogeneity. Rigorous mathematical demonstration was evolved for the multi-springs in series plane stain model and the complex stiffness transfer plane stain model. The demonstration results show that the former is not precise enough and cannot degenerate to the plane strain precise solution under the condition of homogeneous soil, but the later is accurate and can degenerate. The comparison of soil dynamic response under the condition of several different soil properties indicate the former is applicable for the pile dynamic response with lower frequency but not applicable for the pile dynamic response which needs to consider the soil damping accurately.
出版日期: 2009-11-29
:  TU 473  
基金资助:

国家自然科学基金资助项目（50879077）.
作者简介: 王奎华(1965-)，男，江苏滨海人，教授,博导，从事桩基动力学理论及土工测试技术、方法等研究.
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引用本文:

王奎华, 杨冬英, 张智卿. 两种径向多圈层土体平面应变模型的对比[J]. J4, 2009, 43(10): 1902-1908.

WANG Kui-Hua, YANG Dong-Yang, ZHANG Zhi-Qing. Comparison on two kinds of radial multi-zone plane strain models. J4, 2009, 43(10): 1902-1908.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2009.10.027    或    http://www.zjujournals.com/eng/CN/Y2009/V43/I10/1902

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