- 摘 要
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（1 清華大學(xué)土木工程系，北京 100084； 2 中國航空規(guī)劃建設(shè)發(fā)展有限公司，北京 100120）
［摘要］為充分考察浦東大修機(jī)庫結(jié)構(gòu)抗震性能，分別采用彈性時程分析法和彈塑性時程分析法計算了小震和罕遇地震作用下機(jī)庫結(jié)構(gòu)的反應(yīng)。采用ABAQUS和SAP2000兩個軟件進(jìn)行彈性時程分析；彈塑性時程分析采用ABAQUS完成，分析中采用ABAQUS提供的材料本構(gòu)模型和用戶自定義材料本構(gòu)模型。計算結(jié)果表明：小震作用下，兩個軟件計算結(jié)果接近，機(jī)庫結(jié)構(gòu)的鋼筋混凝土柱的柱頂最大位移角均小于規(guī)范限值。大震作用下，柱頂最大位移角遠(yuǎn)小于規(guī)范限值，鋼筋混凝土柱有限屈服，屈服位置在柱的底部或中部與支撐連接處；絕大多數(shù)屋蓋鋼網(wǎng)架桿件保持彈性，并且應(yīng)力比不超過0.87，僅有少量網(wǎng)架桿件進(jìn)入屈服，屈服的網(wǎng)架桿件主要分布在與下部混凝土柱相連接的附近；柱間鋼支撐屈服較多。
［關(guān)鍵詞］浦東大修機(jī)庫；地震反應(yīng)；彈塑性時程分析；鋼筋混凝土柱；大跨網(wǎng)架
Elasto-plastic time history analyses of STARCO overhaul hangar
Pan Peng1, Qian Jiaru1, Zhou Yibin1, Shen Shungao2, Zhao Boyou2, Zhu Dan2(1 Civil Engineering Department of Tsinghua University, Beijng 100084, China; \=2 China Aviation Planning and Construction Development Co., Ltd., Bejing 100120, China)
Abstract:To investigate the safety of the Pudong Maintenance Hangar, elasto-plastic time history analyses were conducted-Elastic time history analyses were used to investigate the behavior of the structure subjected to small earthquakes, while elasto-plastic time history analyses were used for large earthquakes. Elastic time history analysis used SAP2000 and ABAQUS programs, and the results obtained form the two programs were compared. ABAQUS in which user material were embedded through the user subroutines, were used for elasto-plastic analyses. Major conclusions obtained from this study are as follows: (1) the results of elastic analysis obtained from SAP2000 and ABAQUS are very similar. (2) Under the small earthquakes, all members of the structure are elastic, and the maximum story drift angle satisfies the requirement given in the design code. (3) Under the large earthquakes, the maximum story drift angle is much smaller than allowable value given in the design code; some concrete columns get yield at the bottom or middle locations; most members of the space grid roof keep in elastic with the stress ratio no higher than 0.87, and only few, which locate at the joint with the concrete columns, get yield; some braces sustain relatively serious plastic under the large earthquakes.
Keywords:Pudong Overhaul Hangar; earthquake response; elasto-plastic time history analyses; RC column; space frame
作者簡介：潘鵬(1976-)，男，博士，副教授，清華大學(xué)工程結(jié)構(gòu)實(shí)驗(yàn)室副主任，Email:
panpeng@tsinghua.edu.cn。
參考文獻(xiàn)
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