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（1 土木工程安全與耐久教育部重點(diǎn)實(shí)驗(yàn)室,清華大學(xué)土木工程系， 北京 100084； 2 華東建筑設(shè)計(jì)研究院有限公司，上海 200002）
［摘要］針對鋼材強(qiáng)度設(shè)計(jì)指標(biāo)，對中國規(guī)范GB 50017—201X（報(bào)批稿）、美國規(guī)范ANSI/AISC360-10和歐洲規(guī)范Eurocodo 3進(jìn)行了比較分析。主要對比的內(nèi)容包括：不同規(guī)范對極限狀態(tài)的定義和分類、鋼材強(qiáng)度設(shè)計(jì)指標(biāo)的表達(dá)形式和取值、鋼材抗力分項(xiàng)系數(shù)的計(jì)算方法。在此基礎(chǔ)上，對用不同規(guī)范計(jì)算的軸心受力構(gòu)件的安全水平做了一個算例分析，結(jié)果表明，中國鋼結(jié)構(gòu)規(guī)范的安全水平低于歐美規(guī)范。。
［關(guān)鍵詞］鋼結(jié)構(gòu)； 極限狀態(tài)設(shè)計(jì)法； 抗力分項(xiàng)系數(shù)； 設(shè)計(jì)規(guī)范
中圖分類號：TU391文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)13-0001-08
Comparison study of design strength in steel design codes of different countries
Shi Gang1, Zhu Xi2
(1 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China)
Abstract:Design strength index in different steel design codes (GB 50017—201X (draft), ANSI/AISC360-10 and Eurocode 3) was compared. The comparison mainly contains: the definition and classification of limit state in different codes, the expression of partial factor for resistance and its value in each code and the computational method of partial factor for resistance of steel. On this basis, a case study was given. The case study analyzed the safety level of axial tension and compression members designed by these three codes, which indicates the safety level of Chinese code is lower than those of Europe and USA.
Keywords:steel structure; limit state method; partial factor for resistance; design code
*國家自然科學(xué)基金(51478244)，國家自然科學(xué)基金優(yōu)秀青年基金(51522806)。
作者簡介：施剛，教授，博士生導(dǎo)師，Email：shigang@tsinghua.edu.cn。
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