| 组合梁负弯矩区栓钉焊趾疲劳评定方法 |
| |
| 引用本文： | 方兴,周启辉.组合梁负弯矩区栓钉焊趾疲劳评定方法[J].世界桥梁,2007(2):75-77. |
| |
| 作者姓名： | 方兴 周启辉 |
| |
| 作者单位： | 1. 中国铁道科学研究院,北京,100081
2. 中铁大桥局股份有限公司,湖北,武汉,430050 |
| |
| 摘 要： | 各国规范中,组合梁栓钉焊趾部位通常采用2种疲劳细节分别进行疲劳检算。但在负弯矩处栓钉焊趾往往承受栓钉剪应力循环和钢梁翼缘拉应力循环的共同作用。引入通常用于计算变幅应力疲劳的线性累积损伤理论,对2种应力循环引起的结构同一部位的疲劳进行评定,给出组合梁负弯矩区栓钉焊趾疲劳评定公式。
|
| 关 键 词： | 组合梁 栓钉 疲劳 线性累积损伤 |
| 文章编号： | 1671-7767（2007）02-0075-03 |
| 修稿时间： | 2007-02-02 |
Assessment Method for Fatigue of Stud Welding Roots in Negative Moment Region of Composite Beam |
| |
| FANG Xing,ZHOU Qi-hui.Assessment Method for Fatigue of Stud Welding Roots in Negative Moment Region of Composite Beam[J].World Bridges,2007(2):75-77. |
| |
| Authors: | FANG Xing ZHOU Qi-hui |
| |
| Institution: | 1. China Academy of Railway Sciences, Beijing 100081, China; 2. China Zhongtie Major Bridge Engineering, Inc., Wuhan 430050, China |
| |
| Abstract: | In the codes and specifications of most of the countries,two kinds of fatigue details are usually used to respectively make the fatigue checking calculation of the stud welding root parts in composite beam.However,the stud welding roots in the negative moment region of the beam are often subjected to the joint action of shear stress cycling of the studs and tensile stress cycling of steel girder flanges.In this paper,the linear accumulative damage theory commonly used for calculation of the fatigue of variable amplitude stress is used to assess the fatigue of the same part of the structure due to the two kinds of stress cycling and the assessment formulae for the fatigue of the stud welding roots in the negative moment region are also provided. |
| |
| Keywords: | composite beam stud fatigue linear accumulative damage |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
