摘要
输电工程中输电塔主材通常采用双角钢十字组合截面的方式,其受力情况非常复杂。通过对12组双角钢十字组合截面偏心压杆的足尺试验和有限元分析,考察了单节间和双节间压杆的受力性能和破坏模式,并利用多参数有限元分析了宽厚比、长细比以及填板数量和布置方式等主要参数对压杆承载力的影响,提出了其组合截面承载力计算方法,并与试验和有限元所得的结果进行了比较。结果表明,基于偏心的双角钢十字组合截面压杆建议的计算方法合理有效,具有较好的适用性。
The members with combined angle iron cross-section are widely used in electric transmission towers and its behavior is complex.Twelve groups full-scale tests and the finite element analysis were conducted to study the compressive behavior of eccentric members with combined angle iron cross-section,and the buckling failure mode and behavior of test specimens of single inter-node and double inter-node were observed.The effects of width-thickness ratio,slenderness ratio and the number and distribution of filled plate on the ultimate strength were analyzed and the design method of members with combined angle iron cross-section was put forward and compared with the result of experimentation and FEM.The results showed that the method has theoretical and practical significance for design.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2012年第1期63-68,共6页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金资助项目(51078367)
中央高校基本科研业务费资助项目(CDJRC10200016)
关键词
双角钢
十字组合截面
偏心
极限承载力
填板
double angles
combined cross-section
eccentric
ultimate strength
filled plate
