【摘要】 近年来全国各地高层建筑迅猛发展,同时我国已经进入第五个地震活动期,这对建筑用钢的高应变低周、超低周疲劳性能提出了严峻的挑战。用于制作抗震构件的低屈服点钢,作为抗震用钢的新钢种将会得到越来越广泛的应用。为此,本文介绍了国内外建筑抗震用钢的高应变低周、超低周疲劳研究现状,着重阐述了低屈服点钢的研发及其低周疲劳性能研究状况,探讨了提高钢抗震性能的措施,并指出了今后国内抗震用钢低周、超低周疲劳研究的方向,为进一步提高建筑用抗震钢的综合抗震性能提供借鉴。更多还原

【Abstract】 In recent years,high-rise buildings are rapidly developing nationwide.Because our country has entered the fifth seismic active period,high strain low cycle fatigue(LCF) and extremely low cycle fatigue(ELCF) properties of anti-seismic building steel are facing severe challenges.As a new type of anti-seismic steel,low yield point(LYP) steel used to the fabrication of anti-seismic components are applying more and more widely.In this connection,this paper presents the status quo of advances in research on HSLC fatigue and ELCF properties of anti-seismic building steel,especially on the development and HSLC fatigue properties of LYP steel,discusses the measures to improve seismic performance of building steel,and puts forward the research tendencies of LCF and ELCF properties of anti-seismic building steel.更多还原