东南大学学报（自然科学版）2016，Vol.18Issue(3)：565-571,7.DOI:10.3969/j.issn.1001-0505.2016.03.018
板件厚度对钢桥面板顶板纵肋焊接残余应力的影响分析
Influence analysis of plate thickness on welding residual stress of steel deck deck-rib
曹宝雅 1丁幼亮1
作者信息
- 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
- 折叠
摘要
Abstract
In order to study the influence rule of the plate thickness variation on the welding residual stress of the deck-rib of the orthotropic steel bridge,the element birth and death technology in the fi-nite element software ANSYS and the thermal-structure coupling analysis method are used to simulate the welding details of the deck-rib,and the distribution of the welding residual stress is obtained. The influence rule of the plate thickness variation on the residual stress is mainly analyzed.The re-sults show that the transverse residual stress reaches the maximum near the weld toe and the weld roof,and the corresponding value is about two-thirds of the material yield strength.The longitudinal residual stress reaches the maximum in the weld center,and the corresponding value is larger than the material yield strength.The plate thickness variation has little effect on the longitudinal residual stress,but large effect on the transverse residual stress.The maximum transverse residual stress in-creases by 45% when the thickness of the top plate increases from 12 to 20 mm.According to these results,the unified distribution model for the welding residual stress with different plate thicknesses is established,providing a reference for research and design of the welding residual stress.关键词
钢桥/焊接残余应力/疲劳/板件厚度/顶板/纵肋/统一分布模型Key words
steel bridge/welding residual stress/fatigue/plate thickness/deck-rib/unified distri-bution model分类
建筑与水利引用本文复制引用
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）,2016,18(3):565-571,7.
