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(1 清華大學(xué)建筑設(shè)計(jì)研究院有限公司, 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]牛河梁紅山文化遺址群Ⅱ號點(diǎn)保護(hù)篷主體結(jié)構(gòu)為狹長橢球體幾何造型,橢球體長軸與短軸跨度之比達(dá)到3.0,長軸徑向水平推力難以得到有效約束,其對基礎(chǔ)頂?shù)淖饔贸守Q向力小、水平力大的特點(diǎn),若加大基礎(chǔ),則會對遺址產(chǎn)生較大擾動,不利于遺址保護(hù),設(shè)計(jì)中通過采用徑向限位滑動支座有效地解決了這一問題。結(jié)合實(shí)際工程,提出了滑動支座的性能設(shè)計(jì)目標(biāo),可為同類工程設(shè)計(jì)提供參考。
[關(guān)鍵詞]遺址保護(hù)篷; 支座剛度; 限位滑動支座; 性能化設(shè)計(jì)
中圖分類號:TU391 文獻(xiàn)標(biāo)識碼:A 文章編號:1002-848X(2014)01-0001-05
Structure design on the protection shed of Niuheliang No.2 archaeological site
Yang Xiao1, Ge Jiaqi2, Zhao Tianwen1
(1 Architectural Design and Research Institute of Tsinghua University Co., Ltd., Beijing 100084, China; 2 China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)
Abstract: The main structure of the protection shed of Niuheliang No.2 archaeological site is extended as a narrow and long ellipsoid with long axis to short axis ratio of 31. The horizontal radial thrust force of long axis is difficult to restrict and its action on top of the foundation features greater horizontal forces than vertical forces. If the foundation is enlarged, great disturbance on the site is not conducive to site protection. Radial sliding bearings with finite displacement was adopted to solve the problem. Performancebased design objective of sliding bearings design is proposed based on the real project, which provides reference for similar projects.
Keywords: protection shed of civilization site; finite displacement; sliding bearing; performancebased design
作者簡介:楊霄,一級注冊結(jié)構(gòu)工程師,Email:mulang_yang@126.com。
參考文獻(xiàn)
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[2]GB 50153—2008工程結(jié)構(gòu)可靠度設(shè)計(jì)統(tǒng)一標(biāo)準(zhǔn)[S].北京:中國建筑工業(yè)出版社,2008.
[3]JGJ 7—2010空間網(wǎng)格結(jié)構(gòu)技術(shù)規(guī)程[S].北京:中國建筑工業(yè)出版社,2010.
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