[1]钟雯,丁幼亮,王立彬,等.Q370qE钢桥面板顶板-纵肋焊接残余应力试验研究[J].东南大学学报(自然科学版),2018,48(5):857-863.[doi:10.3969/j.issn.1001-0505.2018.05.012]
 Zhong Wen,Ding Youliang,Wang Libin,et al.Experimental study on welding residual stress of Q370qE steel deck deck-rib[J].Journal of Southeast University (Natural Science Edition),2018,48(5):857-863.[doi:10.3969/j.issn.1001-0505.2018.05.012]
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Q370qE钢桥面板顶板-纵肋焊接残余应力试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第5期
页码:
857-863
栏目:
土木工程
出版日期:
2018-09-20

文章信息/Info

Title:
Experimental study on welding residual stress of Q370qE steel deck deck-rib
作者:
钟雯1丁幼亮1王立彬2宋永生3
1东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京210096; 2南京林业大学土木工程学院, 南京210037; 3金陵科技学院建筑工程学院, 南京211196
Author(s):
Zhong Wen1 Ding Youliang1 Wang Libin2 Song Yongsheng3
1Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
2 College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
3College of Architecture Engineering, Jinling Institute of Technology, Nanjing 211196, China
关键词:
Q370qE 焊接残余应力 钻孔法 顶板-纵肋 分布模型
Keywords:
Q370qE welding residual stress blind hold method deck-rib distribution model
分类号:
TU381;U442
DOI:
10.3969/j.issn.1001-0505.2018.05.012
摘要:
为研究Q370qE钢桥面板顶板-纵肋焊接细节残余应力,采用钻孔应变法对足尺正交异性钢桥面板试件进行了试验研究,得到了顶板表面纵、横焊接残余应力分布,分析了不同强度钢材对残余应力分布模型的影响.结果表明:顶板下表面的纵向残余应力σZ约为上表面的2倍,而横向残余应力σX则差别不大; 由于残余应力受焊接顺序影响较大,导致较晚施工的焊缝所在顶板上表面σZ减小而σX增大,而顶板下表面σZ增大而σX减小.基于实测数据和数值模拟结果,提出了适用于Q370qE钢的纵向残余应力分布模型,其较 Q235A或Q345钢材在焊缝附近具有更高的应力峰值和更大的应力梯度,在远离焊接区域则具有较小的压应力值.
Abstract:
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.

参考文献/References:

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相似文献/References:

[1]曹宝雅,丁幼亮.板件厚度对钢桥面板顶板纵肋焊接残余应力的影响分析[J].东南大学学报(自然科学版),2016,46(3):565.[doi:10.3969/j.issn.1001-0505.2016.03.018]
 Cao Baoya,Ding Youliang.Influence analysis of plate thickness on welding residual stress of steel deck deck-rib[J].Journal of Southeast University (Natural Science Edition),2016,46(5):565.[doi:10.3969/j.issn.1001-0505.2016.03.018]

备注/Memo

备注/Memo:
收稿日期: 2018-03-15.
作者简介: 钟雯(1991—),女,博士生;丁幼亮(联系人),男,博士,教授,博士生导师,civilding@seu.edu.cn.
基金项目: 国家重点基础研究发展计划( 973 计划)青年科学家专题资助项目( 2015CB060000)、国家自然科学基金资助项目(51578138)、中央高校基本科研业务费专项资金资助项目( 2242016K41066)、东南大学优秀博士学位论文培育基金资助项目(YBJJ1819).
引用本文: 钟雯,丁幼亮,王立彬,等.Q370qE钢桥面板顶板-纵肋焊接残余应力试验研究[J].东南大学学报(自然科学版),2018,48(5):857-863. DOI:10.3969/j.issn.1001-0505.2018.05.012.
更新日期/Last Update: 2018-09-20