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薛建陽1，梁炯豐1,2，彭修寧1,3，史祝1

（1 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055； 2 東華理工大學(xué)建筑工程學(xué)院， 南昌 330013; 3 廣西電力工業(yè)勘察設(shè)計研究院博士后工作站， 南寧 530023）

 

［摘要］主廠房框排架是火力發(fā)電廠的主要承重結(jié)構(gòu)，受工藝布置要求的限制，其質(zhì)量、剛度分布不均勻。為了解大型火電廠鋼框排架主廠房的變形能力、薄弱部位、受力機理及其破壞機制，采用靜力彈塑性分析方法對其抗震性能進行研究。研究結(jié)果表明：主廠房橫向框排架和縱向框架-支撐結(jié)構(gòu)存在較多的薄弱部位，設(shè)計時應(yīng)予以加強；煤斗梁的剛度超強，對結(jié)構(gòu)內(nèi)力及薄弱層分布產(chǎn)生影響，鋼框排架延性相對較好，具有較強的塑性變形能力和抗震能力。

［關(guān)鍵詞］框排架結(jié)構(gòu)；大型火電廠；靜力彈塑性；抗震性能

中圖分類號：TU271.1        文獻標(biāo)識碼：A        文章編號：1002-848X(2013)04-0071-03

 

Xue Jianyang1, Liang Jiongfeng1,2, Peng Xiuning1,3, Shi Zhu1

（1 College of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China; 2 College of Architecture Engineering, East China Institute of Technology, Nanchang 330013, China; 3 Postdoctoral Station of Guangxi Electric Power Industry Investigation Design and Research Institute， Nanning 530023, China)

 

Abstract: The frame-bent structure is the main load-supporting structure in thermal power plants. The distributions of the structural mass and stiffness are non-uniform due to the production layout requirements. The static elastic-plastic analysis method was used to study the deformation, weak parts, loading capacity and failure mechanisms of steel frame-bent structures of large thermal power plants main buildings. The results show that the steel frame-bent structure has good ductility, strong plastic deformation capacity and seismic performance. However, there are much weak parts in the horizontal frame-bent and longitudinal frame-supporting structures, which must be strengthened when designed. The coal hopper beams have great stiffness, which have influences on the distribution of internal force and weak story of the structure.

Keywords: frame-bent structure; large thermal power plant; static elastic-plastic; seismic performance

*國家自然科學(xué)基金（50978217），中國博士后科學(xué)基金（20080440814）。

作者簡介：薛建陽，博士，教授，Email：jianyang_xue@163.com。

 

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