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›› 2015, Vol. 37 ›› Issue (3): 317-320,360.doi: 10.6052/1000-0879-15-014

• 应用研究 • 上一篇    下一篇

渗流-应力耦合随机性分析方法与应用

章统1, 刘卫群1, 唐珺2, 移峥峰1   

  1. 1. 中国矿业大学力学与建筑工程学院, 江苏徐州 221008;
    2. 中国建筑第五工程局有限公司, 长沙 410004
  • 收稿日期:2015-01-19 修回日期:2015-04-15 出版日期:2015-06-15 发布日期:2015-07-03
  • 通讯作者: 章统,硕士研究生,主要从事岩体稳定和渗流方面的研究.E-mail:zhangtong23@126.com E-mail:zhangtong23@126.com
  • 基金资助:
    国家973计划(2015CB251602,2009CB219605),国家自然科学基金(41074040,40811120546,50774083)和江苏省自然科学基金(BK20141125)资助项目.

STOCHASTIC ANALYSIS OF THE COUPLED PROCESS OF SEEPAGE FIELD AND STRESS FIELD

ZHANG Tong1, LIU Weiqun1, TANG Juny2, YI Zhengfeng1   

  1. 1. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China;
    2. China Construction Fifth Engineering Division Co., Ltd., Changsha 410004, China
  • Received:2015-01-19 Revised:2015-04-15 Online:2015-06-15 Published:2015-07-03

摘要: 基于摄动随机有限元法计算参数随机性对渗流-应力耦合问题的影响, 以渗透系数和弹性模量为基本随机量, 推导了渗流-应力耦合摄动随机有限元迭代格式, 在此基础上对现有计算渗流场和应力场的单场随机计算程序进行改造. 使用改造程序对某大坝渗流-应力耦合问题进行分析, 并与商用软件计算结果进行对比.结果表明, 两种方法计算结果基本一致, 揭示了工程实际中的流固耦合规律, 改造的程序还可以输出商用软件未涉及的随机特征.

关键词: 渗流-应力耦合|随机性|摄动随机有限元|迭代计算

Abstract: Based on the influence of the stochastic nature of the parameter in the perturbation stochastic FEM (finite element method) on the coupled process of the seepage field and the stress field, finite element iterative formulas are derived, where the permeability coeffcient and the elasticity modulus are set as the basic stochastic quantities, and accordingly, the stochastic calculating programs used for calculating the seepage field and the stress field separately are re-formulated. By utilizing the improved programs, the H-M problem of a dam is calculated, and the results are compared with those calculated by COMSOL Multiphysics. It is shown that these two methods are consistent, which indicates that for fluid-solid coupling problems in engineering practice, the stochastic characteristics can be obtained by the program, which is not available in the commercial software.

Key words: coupled process of seepage field and stress field|stochasticity|perturbation stochastic finite element|iterative calculation

中图分类号: 

  • O357