直立鎖邊金屬屋面系統(tǒng)抗風(fēng)承載力節(jié)點(diǎn)試驗(yàn)研究*
于敬海1,2，李路川1，蓋力3，徐廷波3，閆翔宇1,2
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（1 天津大學(xué)建筑設(shè)計(jì)研究院， 天津 300073； 2 天津市房屋建筑鋼結(jié)構(gòu)技術(shù)工程中心， 天津 300072；3 山東萬事達(dá)建筑鋼品股份有限公司， 濱州 256500）
［摘要］為研究直立鎖邊金屬屋面系統(tǒng)的抗風(fēng)性能，對(duì)其進(jìn)行了反向承載力節(jié)點(diǎn)試驗(yàn)。通過觀察試驗(yàn)破壞現(xiàn)象，對(duì)該屋面系統(tǒng)的破壞規(guī)律和抗風(fēng)承載力影響因素進(jìn)行分析。結(jié)果表明，直立鎖邊金屬屋面系統(tǒng)破壞可分為三個(gè)階段，即前期階段、后期階段以及破壞階段，直立鎖邊金屬屋面系統(tǒng)的抗風(fēng)承載力主要受后期階段的承載力控制，減小屋面板寬度可有效提高抗風(fēng)承載力。直立鎖邊金屬屋面系統(tǒng)后期階段的抗風(fēng)承載力主要取決于施工中鎖邊機(jī)械的咬合緊密程度，建議在施工過程中一定要保證其咬合處承載力的可靠性。［關(guān)鍵詞］直立鎖邊金屬屋面系統(tǒng); 反向承載力; 節(jié)點(diǎn)試驗(yàn); 抗風(fēng)性能; 破壞規(guī)律中圖分類號(hào)：TU395 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)17-0083-04
Node test study on wind resistance bearing capacity of the standing seam metal roof systemYu Jinghai1,2, Li Luchuan1, Gai Li3, Xu Tingbo3, Yan Xiangyu1,2(1 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China; 2 Tianjin Steel Building Structure Engineering Center, Tianjin 300072, China; 3 Shandong Wiskind Group, Binzhou 256500, China)Abstract: In order to study the wind resistant performance of the standing seam metal roof system, reverse bearing capacity test of the node was carried out. Through observation of the damage phenomenon, the damage law and the influencing factors on wind resistance bearing capacity of the roof system were analyzed. The results show that the failure of the standing seam metal roof system can be divided into three stages, namely early stage, late stage and failure stage. The wind resistance bearing capacity of the standing seam metal roof system is mainly affected by the bearing capacity of the late stage. Reducing roof panel width can effectively improve the wind resistance bearing capacity. The wind resistance bearing capacity of the standing seam metal roof system in the late stage mainly depends on the closeness of the construction seam mechanical occlusion. It was recommended the reliability of the bearing capacity of the occlusal location must be ensured in the construction process.Keywords: standing seam metal roof system; reverse bearing capacity; node test; wind resistant performance; damage law
*天津市科技支撐計(jì)劃（13ZCZDSF01400）。作者簡(jiǎn)介：于敬海，博士，研究員，Email:13302190626@163.com。
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