[1]强旭红,武念铎,罗永峰.有螺栓预紧力的T型连接初始刚度计算方法[J].东南大学学报(自然科学版),2019,49(1):9-15.[doi:10.3969/j.issn.1001-0505.2019.01.002]
 Qiang Xuhong,Wu Nianduo,Luo Yongfeng.Calculation method of initial stiffness of T-stubs involved bolt pretension[J].Journal of Southeast University (Natural Science Edition),2019,49(1):9-15.[doi:10.3969/j.issn.1001-0505.2019.01.002]
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有螺栓预紧力的T型连接初始刚度计算方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第1期
页码:
9-15
栏目:
土木工程
出版日期:
2019-01-20

文章信息/Info

Title:
Calculation method of initial stiffness of T-stubs involved bolt pretension
作者:
强旭红武念铎罗永峰
同济大学土木工程学院, 上海 200092
Author(s):
Qiang Xuhong Wu Nianduo Luo Yongfeng
College of Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
T型连接 初始刚度 螺栓抗弯刚度 螺栓预紧力 连续梁模型
Keywords:
T-stub initial stiffness bending stiffness of bolt bolt pretension continuous beam model
分类号:
TU411.3
DOI:
10.3969/j.issn.1001-0505.2019.01.002
摘要:
为深入了解螺栓预紧力对T型连接初始刚度的影响,基于连续梁模型对有预紧力时不考虑和考虑螺栓抗弯刚度的T型连接初始刚度计算方法进行了研究,给出了其初始刚度的计算公式.对影响T型连接初始刚度的翼缘厚度和螺栓位置进行了参数分析,得到不同参数对有预紧力T型连接初始刚度的影响规律.研究结果表明,随着螺栓轴线至翼缘边缘距离的增大和翼缘厚度的减小,螺栓抗弯刚度对连接初始刚度的影响逐渐增大.对于有螺栓预紧力的普通钢T型连接,考虑螺栓抗弯刚度时初始刚度的计算结果较不考虑时提高约6%;但对于有螺栓预紧力的高强钢T型连接,考虑螺栓抗弯刚度的计算结果较不考虑时提高约30%.因此,对于有螺栓预紧力的高强钢T型连接,计算其初始刚度时不可忽略螺栓的抗弯刚度.
Abstract:
To reveal more information on the influence of bolt pretension on the initial stiffness of T-stubs, theoretical researches based on the continuous beam model were presented on the calculation method of the initial stiffness of the T-stubs involved bolt pretention considering bending stiffness of bolts or not. A series of equations for predicting the initial stiffness of the T-stubs were derived. The parametric analysis was conducted on the flange thicknesses and locations of the bolts of the T-stubs. Their influences on the initial stiffness of the T-stubs were presented. The research results show that with the increase of the flange thicknesses and the decrease of the distance between the axis of the bolts and the edges of the flanges, the influence of the bending stiffness of the bolts on the initial stiffness of the T-stubs increases. For the mild steel T-stubs with bolt pretension, the calculated results of the initial stiffness considering the bending stiffness of the bolts are nearly 6% higher than those without considering the bending stiffness. But for the hollow structural sections(HSS)T-stubs with bolt pretension, the initial stiffness considering the bending stiffness of the bolts are higher by nearly 30% than those without considering the bending stiffness. Therefore, for the HSS T-stubs with bolt pretension, the bending stiffness of the bolts cannot be neglected when calculating the initial stiffness of the T-stubs.

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备注/Memo

备注/Memo:
收稿日期: 2018-06-23.
作者简介: 强旭红(1984—),女,博士,副研究员,qiangxuhong@tongji.edu.cn.
基金项目: 国家重点研发计划重点专项资助项目(2017YFB0304701)、国家自然科学基金资助项目(51408150)、中央高校基本科研业务费专项资金资助项目(2014KJ044)、财政部2013年施工新技术研究与开发资助项目(财企(2013)235号).
引用本文: 强旭红,武念铎,罗永峰.有螺栓预紧力的T型连接初始刚度计算方法[J].东南大学学报(自然科学版),2019,49(1):9-15. DOI:10.3969/j.issn.1001-0505.2019.01.002.
更新日期/Last Update: 2019-01-20