[1]舒赣平,陈尧,张敏,等.焊接π形截面残余应力试验及分布模型[J].东南大学学报(自然科学版),2017,47(3):559-564.[doi:10.3969/j.issn.1001-0505.2017.03.024]
 Shu Ganping,Chen Yao,Zhang Min,et al.Experimental study on residual stress and distribution model in welded π-shaped sections[J].Journal of Southeast University (Natural Science Edition),2017,47(3):559-564.[doi:10.3969/j.issn.1001-0505.2017.03.024]
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焊接π形截面残余应力试验及分布模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第3期
页码:
559-564
栏目:
土木工程
出版日期:
2017-05-20

文章信息/Info

Title:
Experimental study on residual stress and distribution model in welded π-shaped sections
作者:
舒赣平1陈尧1张敏2袁雪芬2蒋露2
1东南大学土木工程学院, 南京 210096; 2启迪设计集团股份有限公司, 苏州 215021
Author(s):
Shu Ganping1 Chen Yao1 Zhang Min2 Yuan Xuefen2 Jiang Lu2
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Tus-Design Group Co., Ltd., Suzhou 215021, China
关键词:
π形截面 残余应力 自平衡性 分布模型
Keywords:
π-shaped section residual stress self-equilibrating distribution model
分类号:
TU318;U442
DOI:
10.3969/j.issn.1001-0505.2017.03.024
摘要:
为研究焰切边焊接π形截面钢构件残余应力分布形式及大小,采用分割法对5个不同尺寸的Q345B π形截面构件进行试验研究. 通过测得的截面各板件残余应力,分析了板件宽厚比对残余应力分布的影响及各板件残余应力的自平衡性. 研究结果表明:π形截面构件翼缘、腹板残余压应力与板件宽厚比有直接关系;焊缝附近残余拉应力与板件厚度有关,与板件宽厚比相关性不明显;π形截面3块板件的残余应力分别满足自平衡性. 提出了适用于不同尺寸的π形截面构件残余应力分布模型及计算公式,可为π形截面构件的进一步研究与应用提供参考依据.
Abstract:
The residual stresses of 5 specimens were measured by the sectioning method to investigate the residual stress distribution in Q345B steel welded flame-cut π-shaped sections. The effects of the plate width-thickness ratio and interaction among component plates were clarified by measuring the residual stress values of each plate. The results indicate that the compressive residual stress in flange and web correlates with the plate width-thickness ratio. Moreover, the residual stress near the welding is related to the plate thickness but not obvious with the plate width-thickness ratio. The residual stress self-equilibrating within each component plate is satisfied. Finally, a residual stress distribution model and a calculation formulate for predicting the residual stress within welded π-shaped sections with different dimensions are proposed, it provides a valuable reference for further study and application of π-shaped section steel structures.

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备注/Memo

备注/Memo:
收稿日期: 2016-10-07.
作者简介: 舒赣平(1964—),男,博士,教授,博士生导师,shuganping@seu.edu.cn.
基金项目: 中央高校基本科研业务费专项资金资助和江苏省普通高校研究生科研创新计划资助项目(KYLX16_0245).
引用本文: 舒赣平,陈尧,张敏,等.焊接π形截面残余应力试验及分布模型[J].东南大学学报(自然科学版),2017,47(3):559-564. DOI:10.3969/j.issn.1001-0505.2017.03.024.
更新日期/Last Update: 2017-05-20