期刊导航

论文摘要

高强度双角钢十字组合截面双节间压杆受力性能研究

Study on Mechanical Performance of Double Internodes Compression Member of High-strength Dual-angle Cross Combined Section

作者:李正良(重庆大学 山地城镇建设与新技术教育部重点实验室);黄海斌(重庆大学 山地城镇建设与新技术教育部重点实验室;解放军后勤工程学院);赵楠(中建钢构有限公司);刘红军(重庆大学 山地城镇建设与新技术教育部重点实验室);代存杰(重庆大学 山地城镇建设与新技术教育部重点实验室)

Author:Li Zhengliang(Key Lab. of New Technol. for Construction of Cities in Mountain Area,Chongqing Univ.);Huang Haibin(Key Lab. of New Technol. for Construction of Cities in Mountain Area,Chongqing Univ.;Logistic Eng. Univ. of PLA);Zhao Nan(China Construction Steel Structure Co. Ltd.);Liu Hongjun(Key Lab. of New Technol. for Construction of Cities in Mountain Area,Chongqing Univ.);Dai Cunjie(Key Lab. of New Technol. for Construction of Cities in Mountain Area,Chongqing Univ.)

收稿日期:2014-05-26          年卷(期)页码:2015,47(2):64-74

期刊名称:工程科学与技术

Journal Name:Advanced Engineering Sciences

关键字:双角钢;组合截面;双节间;偏心受压;承载力

Key words:dual-angle steel;combined section;double internodes;eccentric compression;bearing capacity

基金项目:国家自然科学基金资助项目(51078367);中央高校基本科研业务费专项资金资助项目(CDJZR12200010)

中文摘要

针对Q420双角钢十字组合截面双节间构件的受力性能进行了轴压和偏压试验,采用有限元计算方法研究构件参数变化对其承载力的影响。在此基础上,提出了适用于工程设计的建议计算方法,并与国内外规范计算结果进行了比较。结果表明:此类构件以弯曲失稳为主,压力偏心对试件承载力有较大影响,横向支撑可减小试件的长细比;增大角钢规格、增加填板数量对轴压和偏压构件的承载力均有提高作用;荷载偏心会降低构件承载力,沿弱轴偏心时的构件承载力下降速度比沿强轴偏心时快;在满足构造要求的前提下,支撑刚度及支撑连接方式对构件承载力影响很小。

英文摘要

In order to investigate the stability performance of dual-angle combined section speciments,axial compression and eccentric compression tests were conducted.The influence of prameter of speciments on ultimate bearing capacity were researched.A formula for axial compression and eccentric compression component was given and compared with results of normal coded.The rusults showed that all of the speciments are flexural buckling,eccentric compression has great influence on ultimate bearing capacity,lateral suppot can reduce the slenderness ratio of speciments and the bearing capacity of such component can improved by appropriately increasing the angle specification and the number of filler plate.Eccentric compression has a negative effect on bearing capacity,especially for weak axis.On the premise of structural requirements,the rigidity and connection way of lateral support have little impact on bearing capacity of such component.

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