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(1 同濟(jì)大學(xué)土木工程學(xué)院  上海 200092；2 三峽大學(xué)土木水電學(xué)院  宜昌 443002)
【提要】在雙伸臂梁整體穩(wěn)定分析中引入等效計(jì)算長(zhǎng)度系數(shù)并得出其計(jì)算公式，按照《鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范》受彎構(gòu)件整體穩(wěn)定性設(shè)計(jì)中的相關(guān)內(nèi)容，由等效計(jì)算長(zhǎng)度系數(shù)推導(dǎo)出了雙伸臂梁整體穩(wěn)定系數(shù)的表達(dá)式，給出了完整簡(jiǎn)潔的雙伸臂梁整體穩(wěn)定設(shè)計(jì)的計(jì)算步驟和設(shè)計(jì)公式。通過(guò)試驗(yàn)數(shù)據(jù)與公式計(jì)算結(jié)果的對(duì)比，證明了該設(shè)計(jì)公式具有較高的精度。
【關(guān)鍵詞】  雙伸臂梁  整體穩(wěn)定  等效計(jì)算長(zhǎng)度系數(shù)  設(shè)計(jì)公式
Overall Stability Design and Experimental Certification of Bioverhanging Beam/Li Kun1,Sun Kaichang2(1 Dept. of Structure Engineering,Tongji University,Shanghai 200092,China;2 Civil Engineering and Hydroelectricity College,Sanxia University,Yichang 443002,China)
Abstract:The equivalent calculated length coefficient is introduced and its formula is deduced in the overall stability design of the bioverhanging beam.Formulas of the overall stability coefficient of the overhanging beam are also deduced from the equivalent calculated length coefficient in accordance with the design code of steel structures.The integrated and precise design process and formulas are offered.It is verified that the design formulas have perfect precision by contrasted between experimental data and results of the design formula.
Keywords:bioverhanging beam;overall stability;equivalent calculated length coefficient;design formula