Experimental study on welding residual stress of Q370qE steel deck deck-rib

被引：1
|
作者：
Zhong W. [1 ]
Ding Y. [1 ]
Wang L. [2 ]
Song Y. [3 ]
机构：
[1] Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing
[2] College of Civil Engineering, Nanjing Forestry University, Nanjing
[3] College of Architecture Engineering, Jinling Institute of Technology, Nanjing
来源：
Ding, Youliang (civilding@seu.edu.cn) | 2018年 / Southeast University卷 / 48期
关键词：
Blind hold method; Deck-rib; Distribution model; Q370qE; Welding residual stress;
D O I：
10.3969/j.issn.1001-0505.2018.05.012
中图分类号：
学科分类号：
摘要：
To investigate the residual stress of deck-rib welded details of Q370qE steel deck, the experiments of full-size orthotropic steel deck (OSD) specimen were carried out by using the hole drilling strain-gauge method. The residual stress distributions of the longitudinal residual stress and the transverse residual stress on the surface of the deck were obtained. The influence of steel with different strength on the residual stress distribution model was analyzed. The results show that the longitudinal residual stress σZ on the bottom surface of the deck is about twice that on the top surface, but the transverse residual stress σX on the top surface of the deck and that on the bottom surface are almost the same. The welding sequence has a significant influence on the residual stress. For the seam welded lately, σZ decreases and σX increases on the top surface of the deck, while σZ increases and σX decreases on the bottom surface of the deck. Based on the test data and the numerical simulation results, the distribution model of the longitudinal welding residual stress suitable for Q370qE steel is established. Compared with Q235A and Q345 steel, it has higher stress peak and larger stress gradient in the weld zone, and has a smaller compressive stress at the zone far from weld. © 2018, Editorial Department of Journal of Southeast University. All right reserved.
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页码：857 / 863
页数：6
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