腹板开孔新型冷弯薄壁构件受弯性能研究  

Bending Behavior of New Cold-Formed Thin-Walled Members with Web Slotting

作　　者：武胜[1] 魏源 WU Sheng;WEI Yuan(Department of Civil Engineering,Northeast Forestry University,Harbin,China,150040)

机构地区：[1]东北林业大学土木工程学院

出　　处：《沈阳建筑大学学报（自然科学版）》2020年第1期29-37,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51008054);教育部中央高校基本科研业务专项基金项目(DL13CB10)

摘　　要：目的分析经腹板开孔处理的受弯构件静力性能变化,以及各参数值变化后对构件的影响规律.方法采用ANSYS有限元分析方法,以两种新型构件(HF1、HF2)的截面参数、孔洞参数作为变化量.对比分析两种新型构件腹板开孔、不开孔的屈曲模式、应力分布、挠度和承载力等.结果在常用孔洞参数范围内,构件开孔后性能降幅一般不高于10%,但构件延性会降低;截面高度对构件的抗弯能力起控制性作用;孔洞长度越长,构件的性能损失就越大.结论两种新型构件在腹板开孔后抗弯性能损失较小,各类参数取值不同能够影响构件的抗弯承载力.The static performance change of flexural members after web opening treatment and the influence law of each parameter value change on the members are analyzed by ANSYS finite element analysis method.The section parameters and hole parameters of web opening and non-opening members was taken as variables to analyse the buckling mode,stress distribution,deflection and bearing capacity.Within the range of commonly used hole parameters,the performance of members decreases by less than 10%after opening,but the ductility of members decreases;the section height plays a controlling role in the flexural capacity of members;the longer the hole length,the greater the performance loss of members.The flexural performance loss of two new types of members is smaller after web opening,and the different values of various parameters can affect the flexural capacity of members.

关 键 词：冷弯薄壁型钢 腹板开孔 有限元分析 静力性能 

分 类 号：TU392[建筑科学—结构工程]