上海交通大学学报(英文版) ›› 2013, Vol. 18 ›› Issue (1): 76-83.doi: 10.1007/s12204-012-1293-x

• 论文 • 上一篇    下一篇

New Unified Failure Model on Evenly Distributed Reinforced Concrete Members with Box Section

LUO Hua-xun* (骆华勋), LIU Xi-la (刘西拉)   

  1. (Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • 出版日期:2013-02-28 发布日期:2013-03-19
  • 通讯作者: LUO Hua-xun* (骆华勋) E-mail:luohuaxun@163.com

New Unified Failure Model on Evenly Distributed Reinforced Concrete Members with Box Section

LUO Hua-xun* (骆华勋), LIU Xi-la (刘西拉)   

  1. (Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Online:2013-02-28 Published:2013-03-19
  • Contact: LUO Hua-xun* (骆华勋) E-mail:luohuaxun@163.com

摘要: It is urgently needed to describe the structural collapse process under extreme conditions to survive people. For reinforced concrete structures it is still a difficulty to describe the failure of reinforced concrete members under complex internal force combination, such as under axial forces, bending moment, shear forces, and torsion working together. In this paper, based on the traditional Nielsen model, a new unified failure model on reinforcement evenly distributed concrete members with box section under combined forces is introduced. The advantages of the proposed new model are to consider the dowel actions of reinforcements and reasonably to consider of the shear carrying capacity of concrete, especially when compression stress of concrete is in a high value. Finally, the theoretical results of the new model are compared with a series of experimental results of box section members. The comparison has verified that the new model is more accurate and feasible for the design and calculation of box section members.

关键词: reinforced concrete, dowel action, concrete failure model, box section

Abstract: It is urgently needed to describe the structural collapse process under extreme conditions to survive people. For reinforced concrete structures it is still a difficulty to describe the failure of reinforced concrete members under complex internal force combination, such as under axial forces, bending moment, shear forces, and torsion working together. In this paper, based on the traditional Nielsen model, a new unified failure model on reinforcement evenly distributed concrete members with box section under combined forces is introduced. The advantages of the proposed new model are to consider the dowel actions of reinforcements and reasonably to consider of the shear carrying capacity of concrete, especially when compression stress of concrete is in a high value. Finally, the theoretical results of the new model are compared with a series of experimental results of box section members. The comparison has verified that the new model is more accurate and feasible for the design and calculation of box section members.

Key words: reinforced concrete, dowel action, concrete failure model, box section

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