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The study of slip line field and upper bound method based on associated flow and non-associated flow rules

         

摘要

At present,associated flow rule of traditional plastic theory is adopted in the slip line field theory and upper bound method of geotechnical materials.So the stress characteristic line conforms to the velocity line.It is proved that geotechnical materials do not abide by the associated flow rule.It is impossible for the stress characteristic line to conform to the velocity line.Generalized plastic mechanics theoretically proved that plastic potential surface intersects the Mohr-Coulomb yield surface with an angle,so that the velocity line must be studied by non-associated flow rule.According to limit analysis theory,the theory of slip line field is put forward in this paper,and then the ultimate boating capacity of strip footing is obtained based on the associated flow rule and the non-associated flow rule individually.These two results are identical since the ultimate bearing capacity is independent of flow rule.On the contrary,the velocity fields of associated and non-associated flow rules are different which shows the velocity field based on the associated flow rule is incorrect.

著录项

  • 来源
    《工程科学(英文版)》 |2010年第3期|21-40|共20页
  • 作者单位

    Logistical Engineering University,Chongqing 400041,China;

    1.Logistical Engineering University,Chongqing 400041,China;

    2.No.6 Air Defense Engineering Department of PLA Air Force,Hengyang,Hunan 421001,China;

    1.Logistical Engineering University,Chongqing 400041,China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 建筑基础科学;
  • 关键词

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