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(同濟(jì)大學(xué)土木工程學(xué)院  上海 200092)

［提要］  研究直立鎖邊點(diǎn)支承的鋁鎂錳合金屋面板的實(shí)用設(shè)計(jì)方法。進(jìn)行鋁鎂錳合金屋面板的正向及反向承載力試驗(yàn)，根據(jù)試驗(yàn)觀察的破壞類型和特征，并結(jié)合相關(guān)計(jì)算理論進(jìn)行設(shè)計(jì)分析。試驗(yàn)現(xiàn)象及試驗(yàn)數(shù)據(jù)表明，鋁鎂錳合金屋面板的正向加載破壞主要是彎剪共同作用的結(jié)果；反向加載的破壞形式是鋁合金支座和板面的連接破壞，且承載力低。經(jīng)試驗(yàn)數(shù)據(jù)和設(shè)計(jì)公式計(jì)算數(shù)據(jù)比對(duì)發(fā)現(xiàn)，雖同為薄壁金屬構(gòu)件，針對(duì)薄壁鋼結(jié)構(gòu)的設(shè)計(jì)公式用于計(jì)算鋁合金薄板時(shí)誤差很大。

［關(guān)鍵詞］  點(diǎn)支承  鋁合金  屋面板  試驗(yàn)研究  設(shè)計(jì)研究

Experiment Study and Design Analysis of Aluminum-magnesium-manganese Alloy Roof Panel/Authors:Dong Zhen, Zhang Qilin, Shi Jing(Department of Building Engineering Tongji University, Shanghai 200092, China)

Abstract:The design method of aluminium-magnesium-manganese alloy standing seam roof systems is discussed. The positive and negative uniform load tests on the roof systems are done. The mechanic characteristic and failure models of them are observed, and the design method is analyzed combined relevant theory. According to the test phenomena and data, under positive loading the failure of roof systems is the result of combined shear force and bending; under negative loading the failure of roof systems is the seam connections unclosed suddenly, and the resistance is smaller than that under positive loading. According to the comparison of test data and the result of several design formulas, the result of design formula for cold-formed thin-wall steel has large wrong, if it is used to design aluminium alloy panel.

Keywords:point support； aluminum alloy； roof； experiment study； design study