中文核心期刊
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中国科技核心期刊
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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2004, Vol. 23 ›› Issue (6): 40-42.

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钢构件对接焊焊缝横向残余应力分布研究

唐万民1，刘小渝1，王晓明2   

  1. 1.重庆交通学院土木建筑学院，重庆400074;2.重庆市建设工程质量监督站，重庆400010
  • 收稿日期:2004-01-19 出版日期:2004-12-15 发布日期:2015-05-18
  • 作者简介:唐万民（1974—），男，江西人，硕士生，从事桥梁结构研究。

Use of fracture mechanics concept to interpret crack resistance behavior of fiber reinforced concrete

TANG Wan-min1 , LIU Xiao-yu1, WANG Xiao-ming2   

  1. 1.Chongqing Jiaotong University,Chongqing 400074, China; 2. Chongqing Northern Expressway, Co., Ltd. Chongqing 401147, China; 3. Chongqing Jiaotong Research & Design Institute, Chongqing 400067, China
  • Received:2004-01-19 Online:2004-12-15 Published:2015-05-18

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摘要： 采用ANSYS通用有限元分析软件对钢板对接焊进行模拟分析，通过对不同厚度钢板的对接焊缝横向残余 应力分布的研究，得出了横向焊接残余应力分布与板厚关系的一些简便的数学公式，以便设计人员在进行焊缝设 计时进行残余应力的估算。

关键词: 对接焊, 横向残余应力, 分布, 有限元

Abstract: The K-superposition method has been improved in this paper to interpret the crack arresting mechanism of fiber reinforced concrete. A simple and direct approach has been introduced based on the Linear Elastic Fracture Mechanics (LEFM). The behavior of fibers in the process of crack arresting has been revealed fundamentally. It has been shown that the stress intensity factor due to the fiber is extremely great at the moment the crack just strides cross the crack, which greatly reduces the total a...

Key words: fiber reinforced concrete, fracture, stress intensity factor, crack

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