输电铁塔等边单角钢两端偏心压杆非线性分析  

Nonlinear Analysis for Eccentric Compression Members at Both Ends of Equal Single-angle Steel of Transmission Tower

作　　者：申成军[1] 郭兵[2] 曹现雷[3] 

机构地区：[1]山东城市建设职业学院,山东济南250014 [2]山东建筑大学,山东济南250101 [3]西安建筑科技大学,陕西西安710055

出　　处：《水利与建筑工程学报》2009年第4期66-69,共4页Journal of Water Resources and Architectural Engineering

摘　　要：通过有限元软件ANSYS计算了几种典型两端偏心受压Q420高强角钢杆件的压溃荷载,并考察了构件变形、应力分布等现象,分析结果可知:残余应力对构件极限承载力的影响小于5%,并与美国《输电铁塔设计导则》(ASCE10-1997)和我国《钢结构设计规范》(GB50017-2003)进行比较,认为美国导则可以用于Q420角钢设计,我国规范偏保守。运用最小二乘法提出了长细比修正公式。The buckling loads of the members with eccentric compression at both ends in typical angle sections are analyzed by ANSYS,and the deformation and stress distribution are also observed.The analysis shows that： the residual stresses affect the ultimate load-carrying capacity of angles by about 5% or less.Compared the results with American design code（ASCE10-1997） and Chinese code（GB50017-2003）,it is considered that American code is able to be used in the design of Q420 single steel, and Chinese code is conservative and safe. At last, a modified slenderness ratio is yielded by means of least square method.

关 键 词：输电铁塔 单角钢 非线性分析 长细比 

分 类 号：TM75[电气工程—电力系统及自动化]