摘要
可恢复功能抗震结构成为近年来国际地震工程领域的研究热点,本文紧密结合国际研究动态,重点介绍了可恢复功能结构新体系上的探索与实践。在可恢复功能框架结构中,建立了放松柱端约束、以预应力筋实现自复位能力的结构体系,研发了保证局部转动能力的角钢-橡胶节点,以振动台试验和基于OpenSees平台有限元分析检验了新型体系与节点的可恢复功能能力。在可恢复功能剪力墙结构中,提出了可更换脚部支座的剪力墙和可更换连梁,通过低周反复荷载试验与精细有限元分析研究了可恢复功能剪力墙新体系的抗震性能,建立了可恢复功能剪力墙体系的设计方法,并在西安某高层建筑中应用了可更换连梁剪力墙。系列研究结果表明,结构体系清晰、节点设计合理、刚度阻尼并举的可恢复功能抗震结构体系,可以实现既定的地震可恢复功能能力,具有广阔的工程应用前景。
In recent years, earthquake-resilient structure has become a research focus in the international earthquake engineering field. This paper presents the study and practice of the innovative earthquake-resilient structure systems keeping up with the international research trends. In the earthquake-resilient frame systems, the end constraints of column were released and the prestressed tendons provided the self-centering capability. An angle steelrubber connection with local rotation was developed and the shaking table test with the finite element simulation based on OpenSees was conducted to evaluate the resilience. In the earthquake-resilient shear wall systems, the shear walls with replaceable loots and the replaceable coupling beam were proposed. Cyclic loading tests and refined finite element analysis were conducted to investigate the seismic performance of earthquake-resilient shear wall systems. The design method was proposed and the replaceable coupling beams were applied in a high-rise building in Xian, China. It can be concluded from series research that earthquake-resilient structures with clear structural system, proper designed connections, collaboration of strength and damping will exhibit desirable resilience under earthquakes and present the broad prospect of real engineering projects.
出处
《地震工程与工程振动》
CSCD
北大核心
2014年第4期130-139,共10页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51261120377
51322803)
关键词
可恢复功能
结构新体系
框架
剪力墙
可更换连梁
earthquake resilience
innovative structural system
frame
shear wall
replaceable coupling beam
