摘要
不锈钢因其材料性能的优越性在土木工程领域得到越来越广泛的应用,但其框架设计常参照钢结构,忽略了不锈钢材料名义屈服强度前的塑性应变,使不锈钢框架设计存在隐患。为了揭示塑性效应对不锈钢框架的影响,对3种框架进行精确二阶弹塑性分析,并与GB 50017—2017《钢结构设计标准》的简化设计方法进行比较。结果表明:塑性效应在大多数情况下对不锈钢框架的弯矩和侧移影响显著,不锈钢框架参照钢结构进行设计往往偏于不安全,而塑性效应系数能够较好地反映塑性效应对框架的影响,且塑性效应系数δ≥0.7时框架的塑性效应显著。
Stainless steel is more and more widely used in civil engineering because of its superior material properties.However,its frame design often refers to steel structure,ignoring the plastic strain before the nominal yield strength of stainless steel,which may cause hidden dangers in stainless steel frame design.In order to reveal the influence of the plastic effect on stainless steel frame,the accurate second-order elastoplastic analysis of three typical frames was carried out and compared with the simplified design method of the national standard Standard for Design of Steel Structures(GB 50017-2017).The results showed that the plastic effect had a great effect on the bending moment and side shift of the stainless steel frame in most cases.The design of the stainless steel frame with reference to the steel structure tended to be unsafe,and the plastic effect coefficient could better reflect the influence of the plastic effect on the frame.Based on the analysis results,the design proposal of stainless steel frame structures was proposed.
作者
陈培旭
张铮
廖仁生
Asante Richard
CHEN Peixu;ZHANG Zheng;LIAO Rensheng;ASANTE Richard(School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province,Fujian University of Technology,Fuzhou 350118,China)
出处
《工业建筑》
北大核心
2023年第2期116-121,共6页
Industrial Construction
基金
福建省自然科学基金(2017J01670)
福建工程学院科研发展基金(GY-Z17159)
关键词
不锈钢
框架结构
材料非线性
塑性效应
有限元分析
stainless steel
frame structure
material nonlinearity
plastic effect
finite element analysis
作者简介
第一作者:陈培旭,男,1995年出生,硕士研究生。电子信箱:cpx13055748461@163.com
