[1]梁刚,郭宏超,刘云贺,等.Q690高强钢T-stub节点力学性能有限元分析[J].地震工程与工程振动,2017,01(6):090-97.[doi:10.13197/j.eeev.2017.06.90.liangg.010]
 LIANG Gang,GUO Hongchao,LIU Yunhe,et al.Finite element analysis of mechanical property of Q690 high strength steel T-stub joints[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2017,01(6):090-97.[doi:10.13197/j.eeev.2017.06.90.liangg.010]
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Q690高强钢T-stub节点力学性能有限元分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
01
期数:
2017年6
页码:
090-97
栏目:
论文
出版日期:
2017-12-31

文章信息/Info

Title:
Finite element analysis of mechanical property of Q690 high strength steel T-stub joints
作者:
梁刚 郭宏超 刘云贺 简政
西安理工大学 土木建筑工程学院, 陕西 西安 710048
Author(s):
LIANG Gang GUO Hongchao LIU Yunhe JIAN Zheng
School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
关键词:
高强钢T型节点数值分析应力分布螺栓力
Keywords:
HSST-stub jointsnumerical analysisstress distributionbolt force
分类号:
TU392.4
DOI:
10.13197/j.eeev.2017.06.90.liangg.010
摘要:
基于Q690高强钢焊接T型节点拉伸试验结果,通过ABAQUS程序对节点进行了有限元分析,获取了节点荷载-位移曲线、初始刚度以及塑性承载力,并与试验结果进行了对比。结果表明:在弹性阶段,计算曲线与试验曲线吻合较好,而屈服阶段计算曲线与试验曲线存在一定差异,但其塑性承载力与试验值吻合良好,表明采用简化方法模拟T型节点拉伸性能的有效性。在此基础上,分析了翼缘板尺寸效应、螺栓直径和强度等级等主要因素对节点螺栓力的影响规律,发现螺栓直径和翼缘板厚对螺栓力影响较大,螺栓力极值约为相应螺栓预拉力的1.62倍左右。提高螺栓强度等级对螺栓力极值影响程度甚微,增幅不足5%。当螺栓边距小于螺栓中心线到腹板边的距离时,螺栓边距变化对螺栓力增幅影响程度较大;当螺栓边距大于螺栓中心线到腹板边的距离时,螺栓力增幅基本保持不变。
Abstract:
Based on the tensile test results of welded T-stub joints with Q690 steels, the joints were analyzed by the ABAQUS finite element program. The load-deformation curves, initial stiffness and plastic strength of the joints were obtained and also compared with the test results. The results show that the simulation curves of the joints, in the elastic stage, have a good agreement with the test curve. And the simulative curves shapes of the joints after yielding has certain differences from the test curves, but the calculating plastic strength can agree with test results. It indicates that a simplified method based on ABAQUS finite element program can be applied to simulate the tensile behavior of the joints. On this basis, the impact of the main factors including flange size, bolt diameter and strength of high strength bolts to bolt force of the joints was analyzed, influence of the bolt diameter and flange thickness on the bolt force was bigger, the maximum bolt force is about 1.62 times the corresponding bolt pretension. Improve the strength of the bolt has little effect on the bolt force increased less than 5%. When the bolt edge distance is smaller than the distance from the center line of the bolt to the edge of the web, the edge distance has a great influence on the increase of the bolt force. Conversely, the bolt force will remain basically unchanged.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-02-10;改回日期:2017-04-20。
基金项目:国家自然科学基金项目(51308454);中国博士后科学基金项目(2013M542371);陕西省博士后自然科学基金;西安理工大学科技新星项目
作者简介:梁刚(1987-),男,博士研究生,主要从事钢结构方面研究和设计工作.E-mail:lg20854007@163.com
通讯作者:刘云贺(1968-),男,教授,主要从事结构抗震、防灾减灾等方面的研究.E-mail:liuyunhe1968@163.com
更新日期/Last Update: 1900-01-01