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

Journal of Chongqing Jiaotong University(Natural Science) ›› 2004, Vol. 23 ›› Issue (6): 40-42.

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

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

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

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.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

作者简介:唐万民（1974—），男，江西人，硕士生，从事桥梁结构研究。

Abstract

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

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

CLC Number:

TG404

TANG Wan-min , LIU Xiao-yu, WANG Xiao-ming. Use of fracture mechanics concept to interpret crack resistance behavior of fiber reinforced concrete[J]. Journal of Chongqing Jiaotong University(Natural Science), 2004, 23(6): 40-42.

唐万民，刘小渝，王晓明. 钢构件对接焊焊缝横向残余应力分布研究[J]. 重庆交通大学学报（自然科学版）, 2004, 23(6): 40-42.

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

钢构件对接焊焊缝横向残余应力分布研究

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