锈损H型钢短柱偏心受压试验研究  

EXPERIMENTAL RESEARCH ON CORRODED H-SHAPED STEEL SHORT COLUMN UNDER ECCENTRIC COMPRESSION

作　　者：徐善华[1,2] 邢振 张宗星[1,2] XU Shanhua;XING Zhen;ZHANG Zongxing(School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China;Key Lab of Engineering Structural Safety and Durability(XAUAT),Xi’an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]工程结构安全与耐久性重点实验室(西安建筑科技大学),西安710055

出　　处：《工业建筑》2021年第8期93-98,共6页Industrial Construction

基　　金：“十三五”国家重点研发计划(2016YFC0701305);陕西省教育厅重点实验室科学研究计划项目(17JS061)。

摘　　要：为研究腐蚀损伤对H型钢压弯构件承载性能的影响,特别是局部屈曲性能,设计了6根不同锈蚀程度的H型钢短柱。首先进行最长达15个月的户外加速腐蚀试验、然后进行板材单调拉伸试验以及短柱的偏心受压试验,最后分析其力学性能参数、破坏模式、极限承载力和变形性能与锈蚀程度的关系。结果表明:随着锈蚀程度的增加,H型钢短柱试件的极限荷载和临界屈曲荷载呈逐渐下降的趋势;锈蚀导致局部屈曲半波长逐渐减小,削弱了试件的塑性变形能力,降低了试件的偏压承载力。In order to study the influence of corrosion damage on the bearing capacity of H-shaped steel members under compression,especially the local buckling performance,six short H-shaped steel short columns with different degrees of corrosion were designed.Firstly,the outdoor accelerated corrosion test for up to 15 months was carried out,then the monotonic tensile test of plates and the eccentric compression test of short columns were carried out,finally the relationship between corrosion degree and mechanical property parameters,such as failure mode,ultimate bearing capacity,and deformation property,was analyzed.The results showed that with the increase of corrosion degree,the ultimate load and critical buckling load of H-shaped steel columns decreased gradually;corrosion led to the decrease of the half wavelength of local buckling,which weakened the plastic deformation capacity of the specimen and reduced the bearing capacity of the member under eccentric compression.

关 键 词：H型钢短柱 锈蚀 钢结构 偏心受压 局部稳定性能 

分 类 号：TU392.1[建筑科学—结构工程]