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。
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 3.1. 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. Performance-based design objective of sliding bearings design is proposed based on the real project, which provides reference for similar projects.
出处
《建筑结构》
CSCD
北大核心
2014年第1期1-5,25,共6页
Building Structure
关键词
遗址保护篷
支座刚度
限位滑动支座
性能化设计
protection shed of civilization site
finite displacement
sliding bearing
performance-based design
