长春工程学院学报：自然科学版2012，Vol.13Issue(1)：32-35,4.
输电铁塔中连续轴压杆计算长度系数的讨论
Investigation of the effective length factor in continuous axially-loaded members of electricity transmission tower
王如新 1柳超 2刘中伟 1江帆3
作者信息
- 1. 辽宁省建筑设计研究院,沈阳110005
- 2. 东北建筑设计研究院,沈阳110005
- 3. 华东建筑设计研究有限公司,上海200012
- 折叠
摘要
Abstract
The continuous axially-loaded members are usually applied to the electricity transmission tower.During the design,we usually use the effective length factor to consider the supporting function of structure to the bar.However,neither the Technical Regulation of Design for Tower and Pole Structures of Overhead Transmission Line（DL/T 5154-2002） nor Design of Latticed Steel Transmission Structures（ANSI/ASCE 10-1997） gives the consideration to the good effect of end restraint from adjacent segment members to middle members,by only thinking it as the strength storage and makes the design more conservative.Through the simplified theoretical analyzing model,and according to elastic bending theory,we deduct a calculating formula to effective length factor of continuous axially-loaded members in this paper.Through the observation to effective length factor,we get some results such as the end restraint of middle axially-loaded strut should be stronger than the hinged connection of axially-loaded bar;a certain supporting effect can be got from the top and bottom struts to the middle part,and this supporting effect can be magnified with the enlarge of slenderness ratio from the top and bottom struts to the middle part.关键词
计算长度系数/端部约束/连续轴心受压杆Key words
effective length factor/end restraint/continuous axially-loaded members分类
建筑与水利引用本文复制引用
王如新,柳超,刘中伟,江帆..输电铁塔中连续轴压杆计算长度系数的讨论[J].长春工程学院学报：自然科学版,2012,13(1):32-35,4.
