- 摘 要
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盧錫鴻
(江蘇省建筑科學(xué)研究院 南京 210008)[提要] 我國冷軋帶肋鋼筋國家標(biāo)準(zhǔn)中的550級鋼筋的力學(xué)性能指標(biāo)與國際標(biāo)準(zhǔn)相當(dāng)，鋼材質(zhì)量在采用專用盤條生產(chǎn)后能大幅度提高；650級和800級冷軋帶肋鋼筋是根據(jù)國內(nèi)中小預(yù)應(yīng)力構(gòu)件的需要自行開發(fā)的，其延性與高強(qiáng)碳素鋼絲相當(dāng)，是中小預(yù)應(yīng)力構(gòu)件的適用鋼材。
[關(guān)鍵詞] 冷軋帶肋鋼筋 伸長率 混凝土結(jié)構(gòu) 預(yù)應(yīng)力構(gòu)件The indexes of the mechanical properties of grade 550 cold-rolledg ribbed bar specified in China's national standard is equal to these of international one. The quality of the special coil rod is improved greatly after processed.Grade 650 and grade 800 cold-rolled ribbed bars are developed according to the demand of the medium and small-sized prestressed members in China, their elongation is equal to that of high-strength carbon steel and they are appropriate steel for small and medium-sized prestresseed members.
Keywords: cold-rolling ribbed wire; elongation ratio; concrete structure; prestressed member
