- 摘 要
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(1 清华大学建筑设计研究院有限公司, 北京 100084; 2 中国航空规划建设发展有限公司, 北京 100120)
[摘要]牛河梁红山文化遗址群Ⅱ号点保护篷主体结构为狭长椭球体几何造型,椭球体长轴与短轴跨度之比达到3.0,长轴径向水平推力难以得到有效约束,其对基础顶的作用呈竖向力小、水平力大的特点,若加大基础,则会对遗址产生较大扰动,不利于遗址保护,设计中通过采用径向限位滑动支座有效地解决了这一问题。结合实际工程,提出了滑动支座的性能设计目标,可为同类工程设计提供参考。
[关键词]遗址保护篷; 支座刚度; 限位滑动支座; 性能化设计
中图分类号:TU391 文献标识码:A 文章编号: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
作者简介:杨霄,一级注册结构工程师,Email:mulang_yang@126.com。
参考文献
[1]赵天文,葛家琪,杨霄,等.牛河梁红山文化遗址Ⅱ号点保护篷钢结构性能化设计[J].建筑结构,2014,44(1):6-11.
[2]GB 50153—2008工程结构可靠度设计统一标准[S].北京:中国建筑工业出版社,2008.
[3]JGJ 7—2010空间网格结构技术规程[S].北京:中国建筑工业出版社,2010.
[4]葛家琪,张爱林,杨维国,等. 基于性能的大跨度钢结构设计研究[J]. 建筑结构学报,2011,32(12):29-36.