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(1 中國(guó)建筑西南設(shè)計(jì)研究院有限公司,成都 610041;2 浙江大學(xué)高性能結(jié)構(gòu)研究所,杭州 310058;3 杭州鐵木辛柯建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所有限公司,杭州 311215)

摘要: 結(jié)構(gòu)抗震設(shè)計(jì)的目標(biāo)是小震不壞、中震可修、大震不倒,中震下結(jié)構(gòu)進(jìn)入彈塑性階段,彈塑性階段結(jié)構(gòu)的地震力如何求得,是亟需解決的問(wèn)題.根據(jù)«鋼結(jié)構(gòu)與鋼-混凝土組合結(jié)構(gòu)設(shè)計(jì)方法»,詳細(xì)介紹了精細(xì)化延性抗震設(shè)計(jì)理論,影響結(jié)構(gòu)性能系數(shù) R 取值的各種因素,結(jié)構(gòu)延性系數(shù)與構(gòu)件寬厚比的關(guān)系.介紹了采用«鋼結(jié)構(gòu)設(shè)計(jì)標(biāo)準(zhǔn)»(GB 50017—2017)進(jìn)行抗震性能化設(shè)計(jì)的流程,及性能系數(shù)最小值的確定依據(jù).最后對(duì)我國(guó)«鋼結(jié)構(gòu)設(shè)計(jì)標(biāo)準(zhǔn)»(GB 50017—2017)在抗震性能化設(shè)計(jì)流程、性能系數(shù)的取值、構(gòu)件寬厚比限值等方面提出了建議.

關(guān)鍵詞: 鋼結(jié)構(gòu);延性抗震設(shè)計(jì);性能化設(shè)計(jì);性能系數(shù);二階效應(yīng);寬厚比

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)18-0145-06

DOI:10.19701 / j.jzjg.LZ2201

Understanding and application of design method for steel and steel-concrete combined structures:seismic performance-based design of steel structures

ZHOU Jia1,TONG Genshu2,LI Changhong1,LIU Yifeng1,ZHANG Lei2,FU Bo3

(1 China Southwest Architectural Design & Research Institute Co. ,Ltd. ,Chengdu 610041,China;2 Institute of High-Performace Structures,Zhejiang University,Hangzhou 310058,China;3 Hangzhou TONGMSK Architectural Structure Design Office Co. ,Ltd. ,Hangzhou 311215,China)

Abstract:The goal of structural seismic design is not broken in small earthquakes,repairable in medium earthquakes,andnot collapsing in large earthquakes. The structure enters the elasto-plastic stage under the medium earthquake,how toobtain the seismic force of the elasto-plastic stage structure is an urgent problem that needs to be solved. According to thedesign method for steel and steel-concrete combined structures,the refined theory for ductile ductility-based seismic design ofstructures,the various factors affecting the R-value of the structural coefficient of performance,and the relationship betweenstructural ductility coefficient and member width-to-thickness ratio were introduced in detail. The seismic performance-based design process using the steel structure design standard ( GB 50017—2017) and the basis for determining theminimum value of the performance coefficient were described. Finally,suggestions were made for China's steel structuredesign standard ( GB 50017—2017 ) in terms of seismic performance-based design process,value of performancecoefficient,and limits of member width-thickness ratio.

Keywords:steel structure;ductility-based seismic design;performance-based design;coefficient of performance;second-order effect;width-thickness ratio

∗中國(guó)建筑西南設(shè)計(jì)研究院有限公司重點(diǎn)課題(R-2021-08-S-A-2023),浙江省建設(shè)科研項(xiàng)目(2021K091).

第一作者:周佳,碩士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事鋼結(jié)構(gòu)、組合結(jié)構(gòu)和復(fù)雜結(jié)構(gòu)的設(shè)計(jì)研究,Email:83294306@ qq. com.

[引用本文] 周佳,童根樹,李常虹,等. «鋼結(jié)構(gòu)與鋼-混凝土組合結(jié)構(gòu)設(shè)計(jì)方法»的理解與應(yīng)用———鋼結(jié)構(gòu)抗震性能化設(shè)計(jì)[J]. 建筑結(jié)構(gòu),2022,52(18):145-150. ZHOU Jia,TONG Genshu,LI Changhong,et al. Understanding andapplication of design method for steel and steel-concrete combined structures: seismic performance- based design of steelstructures[J]. Building Structure,2022,52(18):145-150.