某體育館屋面系統抗風承載力試驗研究*
杜國鋒1，何明星1，吳方紅1，劉瑜1，劉蘭2
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(1長江大學城市建設學院， 荊州 434023； 2 中北大學理學院， 太原 030051)
［摘要］大型場館屋面系統大多采用金屬屋面板，此類屋面板在風荷載作用下容易發(fā)生破壞。通過堆砂靜力試驗方法模擬風荷載對屋面產生的靜壓力，對采用65/400（3004型）鋁鎂錳合金屋面板的某體育館屋面系統模型的抗風承載力進行了試驗研究，分別實測無防風夾、滿布防風夾和周邊布設防風夾三類屋面系統的變形及極限承載力，根據試驗結果對屋面系統在模擬風荷載作用下的破壞機理進行分析。結果表明：屋面板與T形支座直立鎖邊咬合連接破壞是屋面系統破壞的主要原因，加設防風夾后屋面系統承載力有很大提高；在不考慮屋面板大變形的情況下，無防風夾試驗屋面的極限荷載達1.4kN/m2，周邊布設防風夾的試驗屋面的極限荷載可以達到3.0kN/m2，滿布防風夾的試驗屋面的極限荷載可以達到5.0kN/m2；據推算，單個防風夾可以提供1.27kN承載力。［關鍵詞］屋面系統; 防風夾; 風荷載; 極限承載力中圖分類號：TU395 文獻標識碼：A 文章編號：1002-848X(2016)03-0089-06
Experimental research on wind load-bearing capacity of a gymnasium roofing systemDu Guofeng1, He Mingxing1, Wu Fanghong1, Liu Yu1, Liu Lan2(1 School of Urban Construction, Yangtze University, Jingzhou 434023, China; 2 School of Science,North University of China, Taiyuan 030051, China)Abstract:Most of the large stadiums' roofing systems adopt metal roof panels which are prone to be destroyed under the wind load. The sand pile static test method was used to simulate static pressure of wind load on the roof and the experimental research on wind load-bearing capacity of a gymnasium's roofing system using 65/400 (3004 type) aluminum magnesium manganese alloy roof panel was carried out. The deformations and ultimate bearing capacities of three roofing systems (without wind clip, full of wind clips and with wind clips in surroundings respectively) were measured. According to the test results, the failure mechanism of roofing system under simulated wind load was analyzed. The results show that the main reason for the destruction of the roofing system is the connection damage of roof panel and vertical welt of T-shaped support, and roofing system capacity is greatly improved with installation of wind clips. Without considering the case of large deformation of roof panel, ultimate load on the experimental roof without wind clip is 1.4kN/m2, and the ultimate loads are 3.0kN/m2 and 5.0kN/m2 respectively for roofs with surrounding wind clips and full of wind clips. It is estimated that a single wind clip can provide bearing capacity of more than 1.27kN.Keywords:roofing system; wind clip; wind load; ultimate bearing capacity
*國家自然科學基金項目（51378077），湖北省自然科學基金（創(chuàng)新群體）項目（2015CFA029），湖北省教育廳科技計劃重點項目（D20131205）。作者簡介：杜國鋒，博士，教授，Email： gfd_1125@126.com。
