- 摘 要
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［提要］ 對一起特大火災(zāi)現(xiàn)場主體結(jié)構(gòu)進(jìn)行了調(diào)查。調(diào)查表明：在火災(zāi)燃燒區(qū)，內(nèi)框架柱構(gòu)件表層混凝土大面積剝落、爆裂，鋼筋外露，殘留混凝土疏松，裂縫多而寬；框架梁構(gòu)件底部及側(cè)面混凝土成片脫落或發(fā)生網(wǎng)狀裂紋，梁支座附近剪切斜裂縫尤為嚴(yán)重，鋼筋外露，殘留混凝土疏松，框架主梁、肋梁構(gòu)件已經(jīng)嚴(yán)重扭曲、下?lián)献冃?；樓板底混凝土保護(hù)層大面積剝落、露筋，部分樓板跨中部位下?lián)蠂?yán)重，且與框架主梁支座連接部位板面發(fā)生斷裂，裂縫滿布。經(jīng)推測，火災(zāi)燃燒區(qū)結(jié)構(gòu)構(gòu)件屬危險構(gòu)件，已不能繼續(xù)安全使用，可修性極差，必
須拆除?？偨Y(jié)出火災(zāi)后廠房主體結(jié)構(gòu)鑒定方法，為同類火災(zāi)鑒定提供參考意見。
［關(guān)鍵詞］ 鑒定 主體結(jié)構(gòu) 特大火災(zāi) 框架結(jié)構(gòu)
Accreditation of Agent Structure After Rich Conflagation of Zhongfu Factory Building in Tianjin/Chen Tianyu1, Li Jun2, Wang Hui3, Jiang Chun2(1 Civil Engineering School of Tianjin University, Tianjin 300072,China; 2 Tianjin House Center for Evaluation and Inspection of Quality & Safety, Tianjin 300072,China; 3 Civil Engineering School of Harbin Engineering University,Harbin 150001,China)
Abstract:An agent structure of enormous scene of fire is surveyed in the burning area of
the fire.The post component top layer concrete of interior frame peels off and bursts by a large scale. The reinforcing bar is exposed, remaining the concrete loosely, and there are many wide cracks. The component bottom of the frame and side concrete comes off in blocks or the resillage happens and clip ping inclined crack takes place particular seriously.The
reinforcing bar exposes and relic concrete to be loose. Girder and rid of the frame twist
seriously and downwarping is out of shape. The protective layer of component board bottom concrete peels off by a large scale and the bar reveals.Some floor slab
downwarps seriously under the middle part location and the pinacoid which conne
ct with main beam support of frame breakdown. It belongs to dangerous component
and must be dismantled with poor repairing.The agent structure of factory buildi
ng accredited methods is presented and it offers the reference for the fact of the similar fire.
Keywords:accreditation; agent structure; conflagation; frame structure
