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(1 西安建筑科技大學(xué)土木工程學(xué)院，西安 710055； 2 河南省電力勘測(cè)設(shè)計(jì)院，鄭州 450007）

［摘要］對(duì)13根Q235冷彎薄壁型鋼卷邊槽形截面簡(jiǎn)支梁試件的試驗(yàn)進(jìn)行了變形性能分析，結(jié)果表明：北美規(guī)范按最大彎矩控制截面計(jì)算有效截面剛度進(jìn)行變形分析偏保守；我國(guó)冷彎薄壁型鋼技術(shù)規(guī)范按毛截面計(jì)算(相當(dāng)于等截面、等剛度梁分析)偏于不安全。因此通過(guò)對(duì)該試驗(yàn)的數(shù)據(jù)進(jìn)行參數(shù)分析，提出了一個(gè)變形計(jì)算公式中較合理的折減系數(shù)。

［關(guān)鍵詞］冷彎薄壁；卷邊槽形鋼梁；有效截面

Research on reduction factor in the deformation formula of cold-formed steel beams

Miao Erping¹, Liu Xiaofeng², Peng Yiliang²（1 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China；2 Henan Electric Power Survey and Design Institute，Zhengzhou 450007, China)

Abstract:The deformation behavior of a total of thirteen Q235 cold-formed lipped channel simple beams under bending has been studied. The results indicate that the deformation analysis under effective cross-section rigidity calculated by controlling the greatest moment was conservative  according to the North American Specification, and the deformation calculated by gross section (equivalent to analysis equal a cross-section and stiffness beam) was unsafety according to the Chinese Specification. Based on the parameter analysis,  a more reasonable reduction factor is presented in the deformation formula.

Keywords:cold-formed thin-wall; lipped channel steel beam; effective cross-section

作者簡(jiǎn)介：苗二萍，碩士，Email:miaoerping123@126.com。

參考文獻(xiàn)

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