期刊文献+

多种因素耦合作用下的大体积混凝土温度应力仿真分析 被引量:4

Simulation Analysis of Thermal Stress of Mass Concrete under Multi-factor Coupling Effect
下载PDF
导出
摘要 在大体积混凝土结构温度应力仿真分析过程中,混凝土的弹性模量、徐变和干缩等因素与温度都有关系,对温度应力都有影响。本文以混凝土热弹塑性应变理论为基础,建立了考虑徐变等因素影响下的大体积混凝土温度应力本构模型,得出了大体积混凝土温度应力的热弹塑性有限元表达式。在此,利用有限元分析软件MIDAS,对一实际工程进行了数值仿真分析,得出了温度应力的一般规律,理论分析结果与实测结果吻合较好,所得结论和建议具有一定的理论意义和实用价值。 Simulation analysis of thermal stress on mass concrete finds that the factors such as elastic modulus, creeping and shrinkage of concrete all have influence on the thermal stress. Based on the theory of thermal elastic plasticity, the constitutive model of thermal stress and strain of mass concrete is established. And then the thermal elastic-plastic FEM expression for thermal stress of mass concrete is put forward. MIDAS, FEM software, is used to make numerical simulation analysis based on a concrete project and the general rules of thermal stress of mass concrete are concluded. The result of theory analysis is quite the same with that in practice, which indicates that the conclusion and suggestion made in this paper are of some theoretical and practical value.
出处 《安徽建筑》 2009年第4期136-138,共3页 Anhui Architecture
关键词 大体积混凝土 温度应力 热弹塑性 耦合 仿真分析 mass concrete thermal stress thermal elastic plasticity coupling simulation analysis
  • 相关文献

参考文献4

二级参考文献11

  • 1秦荣.高层建筑结构分析的QR法[J].广西科学,1994,1(4):14-18. 被引量:5
  • 2秦荣,谢肖礼.高层建筑结构弹塑性分析的新方法[J].土木工程学报,1994,27(6):3-10. 被引量:9
  • 3朱伯芳.混凝土结构徐变应力分析的隐式解法[J].水利学报,1983,(5):40-46.
  • 4朱伯芳.水工混凝土结构的温度应力与温度控制[M].北京:中国电力出版社,1998.160.
  • 5BAZANT Z P, SANTOSH P. Solidification theory for concrete creep I: formulation [J]. J of Eng Mech, 1989, 33(8) : 1691-1703.
  • 6PANNEERSELVAM D, PANOSKALTSIS V P. A nonlinear visco-elastic model for concrete's creep andcreep failure [A]. 15th ASCE Engineering Mechanics Conference [C]. New York:Columbia University Press, 2002.
  • 7NECHNECH W, MEFTAH F. An elasto-plastic damage model for plain concrete subjected to high temperatures [J]. Eng Struct, 2002, 24(5)597-611.
  • 8HAUGGAARD A B, DAMKILDE L, HANSEN P F. Transition thermal creep of early age concrete[J]. J of Eng Mech, 1999, 125(4):458-465.
  • 9朱伯芳,水工混凝土结构的温度应力与温度控制,1998年,160页
  • 10朱伯芳,水利学报,1983年,5期,40页

共引文献72

同被引文献23

引证文献4

二级引证文献12

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部