冷成型钢冷作强化计算方法探讨.pdf

王士奇,等:冷成型钢冷作强化计算方法探讨
冷成型钢冷作强化计算方法探讨
王士奇孙彤
(南京工业大学土木学院南京 210009) (山东省冶金设计院济南 250014)
摘要主要介绍了美国 AISI规范、加拿大 S136规范和中国 GB50018—2002规范中冷成型钢冷作强化的计算方
法及其理论依据,以90。冷成型钢圆角为例分析了各规范的计算结果,并且与厚壁冷成型钢试验数据进行了对比,
结果表明我国 GB50018规范的计算方法相对保守,可用于厚壁冷成型钢,且应用简便,具有较好的通用性和可靠
性,并能够满足工程要求。这为我国现行《冷弯薄壁型钢结构技术规范》(GB50018—2002)对壁厚限制进行修正提
供了一定的依据。
关键词冷弯型钢冷作强化计算方法厚壁冷成型钢
RESEARCHES oN THE CALCULATloN METHoD oF STRAlN HARDENlNG
oF ED STEEL
Wang Shiqi
(College of Civil Engineering,NanjingCivil of (College Technology Universityof Nanjing 210009)
Sun Tong
(Shandong DesignMetallurgical Institute Jinan 250014)
ABSTRACT The calculation methods of strain hardening of cold formed stec1 using S136 and Chinese GB
50018—2002 specificationsand their theoreticalbases are mainlypresented in cold—formed withsteel
90。round angle asexample,this paper analysescalculated its resultsusing every specification,pares with testdata
of thick cold—formed steel,whichindicates that GB50018— 2002 specification relatively is conservativeand appropriateto
thick cold—formedthick steel,and has and better universality dependability,which canthe project also satisfy request、This
provides actua1“Technica1thefor basis Code ofCold—Formed I'hin—Wal1 Section Stee1 Structures”(GB 50018—2002)
modifying thickness restriction of cold—formed steelmember toa certain