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趙國棟1,2，孫會社1，于立強1，袁 鵬3
（1 山東省建筑科學研究院，濟南250031; 2 同濟大學，上海200096; 3 中國建筑科學研究院工程抗震研究所，北京100013）[摘要] 火災高溫對鋼結構的材料性能特別是力學性能有顯著影響。近年來，隨著鋼結構的應用增多，火災造成鋼結構破壞的事故也逐漸明顯。結合工程實例，詳細敘述了鋼結構災后結構安全性鑒定分析過程，對災后廠房現(xiàn)場損傷檢查情況進行描述，根據(jù)構件環(huán)境溫度的判定和災后材料的殘余力學性能對主體結構綜合分析評定，并依據(jù)評價結構給出可行的安全處理措施，為其他類似工程提供借鑒。
[關鍵詞] 鋼結構；火災；梁；力學性能Structural safety identification and security measures of a steel structure plant after fire
Zhao Guodong1,2, Sun Huishe1, Yu Liqiang1, Yuan Peng3
(1 Shandong Province Academy of Building Research, Ji'nan 250031, China; 2 Tongji University, Shanghai 200092, China; 3 Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China)Abstract: The temperature of fire has a significant impact on the material properties, especially on the mechanical properties. In recent years, with increased application of steel structure, structural damage caused by the fire became evidently. Based on the engineering, the analysis processes of the structural safety identification was described in detail after fire, first the damage inspection condition was described to the plant after fire disaster, followed a comprehensive analysis and assessment of the main structure were gave by decision of element ambient temperature and the residual mechanical properties post-disaster, and then gave viable security measures were pointed out to provide a reference to other similar projects.
Keywords: steel structure; fire; beam; mechanicalproperty
