某燒結(jié)廠房屋蓋系統(tǒng)垮塌分析研究
劉俊，董振平，王應(yīng)生，徐秦，蘇明周
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（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］某鋼鐵公司燒結(jié)廠房竣工使用僅一年，①～④軸屋蓋系統(tǒng)突然垮塌。從原設(shè)計(jì)失誤、屋面積灰荷載遠(yuǎn)超設(shè)計(jì)值、施工質(zhì)量粗糙等方面入手，通過(guò)對(duì)垮塌部分受損變形的節(jié)點(diǎn)和構(gòu)件進(jìn)行調(diào)查，對(duì)未垮塌的⑤～軸屋蓋及整個(gè)廠房排架柱進(jìn)行檢測(cè)，模擬垮塌時(shí)屋蓋系統(tǒng)的桿件內(nèi)力和變形情況，并與現(xiàn)場(chǎng)垮塌部位的桿件變形特點(diǎn)進(jìn)行對(duì)比，分析廠房屋蓋系統(tǒng)垮塌的原因。從廠房工藝特點(diǎn)出發(fā)，提出垮塌重建部分的荷載取值、結(jié)構(gòu)形式和支撐體系等方面的建議，對(duì)未垮塌部分的加固方案進(jìn)行優(yōu)化。最后對(duì)廠房使用過(guò)程中屋面檢修、清灰措施的制定作了思考。［關(guān)鍵詞］燒結(jié)廠房; 排架結(jié)構(gòu); 鋼屋架; 積灰荷載; 垮塌中圖分類號(hào)：TU392.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)09-0105-04
Collapse analysis and study on roof system of a sintering plantLiu Jun, Dong Zhenping, Wang Yingsheng, Xu Qin, Su Mingzhou(College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China)Abstract: A sintering plant in a steel company had been used for only one year when the roof system from axis ① to ④ suddenly collapsed. From the perspectives of original design errors, roof fouling load far more than the design value and the rough construction quality, damaged and deformed joints and components in collapsing part were investigated. Intact roof system from axis ⑤ to was detected as well as all of the bent frame columns. Component internal forces and deformation conditions of the roof system in collapse were simulated, and the component deformation characteristics were compared with that of components in collapsed region. The reasons for plant roof systems collapse were analyzed. From the technological features of the plant, suggestions were provided including load value selection of collapse reconstruction part, structural form and supporting system. Reinforcement scheme of intact part was optimized. At last, reflections were made on the roof maintenanceand dust cleaning measures in service process of the plant.Keywords: sintering plant; bent structure; steel roof truss; fouling load; collapse
作者簡(jiǎn)介：劉俊，碩士，工程師，Email：wolflj@126.com。
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