基于输电塔架结构Q460等边角钢力学性能数值分析  

MECHANICAL BEHAVIOR NUMERICAL ANALYSIS OF Q460 EQUAL LEG ANGLE BASED ON THE TRANSMISSION TOWER STRUCTURE

作　　者：郭宏超[1] 钟宣[2] 

机构地区：[1]西安理工大学土木建筑工程学院,西安710048 [2]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2013年第12期162-166,共5页Industrial Construction

基　　金：国家自然科学基金项目(51308454);中国博士后第54批面上项目(2013M542371);陕西省自然科学基金项目(2013JQ7006);陕西省教育厅自然科学专项(2013JK0967)

摘　　要：在输电塔结构极限承载力试验研究的基础上,采用ANSYS有限元软件,分析了不同长细比、不同端部约束条件下Q460等边角钢的应力分布、失稳模式、极限承载力等指标。研究表明:破坏模式方面,有限元分析失稳模式与试验现象基本一致;承载力方面,对长细比为30、45的试件,数值分析结果与试验值相差4%左右,对长细比为60的试件,二者相差10%左右,吻合较好。研究结果可为Q460高强角钢的规范制订和工程应用提供合理依据。Based on the ultimate bearing capacity test of transmission tower structure , it was analyzed the Q 460 equalley angle of the stress distribution , failure mode and the ultimate bearing capacity of Q 460 equal leg angle which had different slenderness ratio and end constraint conditions by finite element software of ANSYS .The research shows that on the failure mode , the finite element analysis of the buckling mode and test phenomenon are basically consistent;on bearing capacity , for the specimens with slenderness ratio of 30 and 45, there is the difference of only 4%between the results of numerical analysis and experimental value .For the specimen of slenderness ratio 60, the difference is 10%and has a good coincidence .The research results provide the reasonable basis for amending the specification and engineering practice of the Q 460 high strength angle .

关 键 词：高强角钢 极限承载力 长细比 数值分析 破坏模式 

分 类 号：TU391[建筑科学—结构工程]