[1]薛晓敏,袁红丽,饶翼,等.输电铁塔单变双拼角钢转换节点承载力研究[J].西安交通大学学报,2020,54(08):011-19.[doi:10.7652/xjtuxb202008002]
 XUE Xiaomin,YUAN Hongli,RAO Yi,et al.Bearing Capacity of Conversion Joints Between Single-Angle and Dual-Angle Steels in Steel Pylon[J].Journal of Xi'an Jiaotong University,2020,54(08):011-19.[doi:10.7652/xjtuxb202008002]
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输电铁塔单变双拼角钢转换节点承载力研究
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《西安交通大学学报》[ISSN:0253-987X/CN:61-1069/T]

卷:
54
期数:
2020年第08期
页码:
011-19
栏目:
出版日期:
2020-08-10

文章信息/Info

Title:
Bearing Capacity of Conversion Joints Between Single-Angle and Dual-Angle Steels in Steel Pylon
文章编号:
0253-987X(2020)08-0011-09
作者:
薛晓敏1 袁红丽2 饶翼2 张陵3
1.西安交通大学土木工程系, 710049, 西安; 2.西安建筑科技大学理学院, 710075, 西安; 3.西安交通大学航天航空学院, 710049, 西安
Author(s):
XUE Xiaomin1 YUAN Hongli2 RAO Yi2 ZHANG Ling3
1. Department of Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2. School of Science, Xi'an University of Architecture and Technology, Xi'an 710075, China; 3. School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
关键词:
角钢塔 单变双转换节点 承载力 有限元 屈服线理论
Keywords:
angle steel pylon conversion joints bearing capacity finite element method yield line method
分类号:
TU391
DOI:
10.7652/xjtuxb202008002
文献标志码:
A
摘要:
鉴于输电铁塔单变双角钢转换节点基础理论和设计规范的欠缺,开展单变双角钢转换节点承载力的数值仿真和设计理论研究。对工程常见构型的单变双角钢转换节点进行有限元建模及其仿真计算分析,探究该节点在受拉、受压荷载条件下的受力机理和破坏模式,以此获得转换节点各部件(上单角钢、下双拼角钢、上下靴板以及水平过渡板)匹配设计基本原则,为提出设计推荐公式提供重要依据; 基于屈服线法理论提出单变双角钢转换节点整体承载力设计推荐公式,并借助“塑性分析,弹性设计”的思想对承载力的预测考虑合理的安全储备,便于工程设计; 采用屈服线法设计公式和现行相关设计公式对相同构型的单变双角钢转换节点分别进行承载力计算。对比结果表明,屈服线法设计公式计算结果与有限元仿真最为接近,平均相差仅为0.82%,能较好地反映单变双角钢转换节点的整体承载力。研究成果可对现行设计规范及理论提供参考。
Abstract:
Conversion joints between single-angle and dual-angle steels are widely applied in steel pylons. Aiming at the lack of related basic theory and design specifications, the bearing capacity of conversion joints between single-angle and dual-angle steel is investigated via numerical simulation. Nine common-sized conversion joints are taken as the simulation examples with finite element method(FEM), and their stress state and failure mode under static tension and compressive loadings are discussed. Several design principles of component match are obtained to provide the crucial basis for the recommended design formula, the components include top single-angle and bottom dual-angle steel, vertical plates, and horizontal plate. The recommended design formula are then presented to evaluated the bearing capacity of conversion joints following yield line theory(YLT). It is convenient to reasonably consider certain safe reservation in virtue of the idea of “plastic analysis and elastic design” for engineering designers. The recommended formula is then utilized to calculate the bearing capacity of all the aforementioned conversion joint examples, and the results of YLT coincide much better with the FEM simulations than the other design formulas in current specifications, with an average error of 0.82%.

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备注/Memo

备注/Memo:
收稿日期: 2019-11-05。作者简介: 薛晓敏(1977—),女,副教授,硕士生导师。基金项目: 国家自然科学基金资助项目(11502188)。
更新日期/Last Update: 2020-08-10