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（1 上海交通大學(xué)土木工程系，上海 200240； 2 清華大學(xué)公共安全中心，北京 100084；

3 中國建筑科學(xué)研究院建筑防火研究所，北京 100013）

［摘要］由于采用大空間的建筑布局以及可燃物的特殊性，現(xiàn)有規(guī)范方法難以滿足河南省新廣播電視塔防火設(shè)計安全性與經(jīng)濟(jì)性要求。基于性能化設(shè)計思想對該工程全景畫館鋼結(jié)構(gòu)體系的抗火安全性進(jìn)行了評估。確定結(jié)構(gòu)抗火性能目標(biāo)，對結(jié)構(gòu)整體在可能最不利火災(zāi)場景下的力學(xué)性能進(jìn)行分析，根據(jù)結(jié)構(gòu)的受火性能是否滿足抗火性能目標(biāo)來評估結(jié)構(gòu)的抗火安全性及需要采取的防火保護(hù)措施。在此基礎(chǔ)上對整個塔體結(jié)構(gòu)的安全性進(jìn)行了分析，其成果可為國內(nèi)外高層鋼結(jié)構(gòu)的整體抗火分析提供借鑒和參考。

［關(guān)鍵詞］鋼結(jié)構(gòu)；性能化抗火設(shè)計；火災(zāi)-結(jié)構(gòu)耦合；FDS；ANSYS中圖分類號：TU973.13文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2011)06-0055\|05

Performance-based fire resistance design and analysis of high-rise steel towers

Shi Jianyong¹, Sun Xuan^2,3, Liu Wenli³ , Li Yinqing³(1 Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China;2 Center for Public Safety Research, Tsinghua University, Beijing 100084, China; 3 Institute of Building Fire Research, China Academy of Building Research, Beijing 100013, China)

Abstract:For the large space and the especial combustible, the exited codes can not be used for the fire safety design of a high-rise steel TV transmission tower. A newly integrated method of fire-structural coupling analysis was introduced to analyze the overall fire safety behavior of panoramic painting gallery under fire conditions based on the performance-based fire design ideas. The target of structural fire resistance was determined. The behavior of structural members of panoramic painting gallery was analyzed in the most severe fire scene. The evaluation of structural fire resistance and design of the whole steel tower were performed. The result of the analysis can be referenced for the fire safety design of similar buildings.

Keywords:steel structure; performance-based fire design; fire-structural coupling analysis; FDS; ANSYS

*上海市科委重點(diǎn)科技攻關(guān)專項(10231202902)，上海交通大學(xué)晨星青年學(xué)者獎勵計劃(A2615B)。

作者簡介：史健勇，博士，副教授，Email:shijy@sjtu.edu.cn。

參考文獻(xiàn)

［1］  GB50016—2006建筑設(shè)計防火規(guī)范［S］. 北京：中國計劃出版社，2006.

［2］  MEACHAM B J，CUSTER R L P. Performance based fire safety engineering: An introduction of basic concepts［J］. Journal of Fire Protection Engineering，1995，7(2): 35\|53.

［3］  李引擎. 建筑防火性能化設(shè)計［M］. 北京：化學(xué)工業(yè)出版社，2005.

［4］  DD ENV 1993-1-2:2001 Eurocode 3 Design of steel structures-part 1.2: General rules-structural fire design［S］. Commission of the European Communities, Corrected and Reprinted, 2001.

［5］  CECS200:2006 建筑鋼結(jié)構(gòu)防火技術(shù)規(guī)程［S］. 北京：中國計劃出版社，2006.