高层建筑加强伸臂结构分析及应用  

Analysis and application of reinforced outrigger in high-rise buildings

作　　者：薛红京 束伟农[1] XUE Hongjing;SHU Weinong(Beijing Institute of Architectural Design Co.,Ltd.,Beijing 100045,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045

出　　处：《建筑结构》2023年第18期131-137,共7页Building Structure

基　　金：国家自然科学基金(S2121005)。

摘　　要：加强伸臂技术的采用是高层建筑技术发展的主要驱动力之一,一般刚性伸臂加强作用非常明显,但容易造成楼层刚度突变,耗能性能也相对较弱,在超高层建筑中将屈曲支撑、黏滞阻尼器等技术与一般伸臂技术结合,可以在发挥刚度加强作用的同时,提高伸臂耗能效果。介绍了一般刚性伸臂、BRB伸臂、黏滞阻尼伸臂以及基于放大技术黏滞阻尼伸臂的性能,与一般的刚性伸臂技术相比,基于新技术组合型伸臂材料选择更加多样化,综合性能也更加突出,可以显著提高主体结构附加阻尼,减少地震输入,改善竖向楼层刚度突变,为超高层建筑结构提供了更好的创新和发展空间。The adoption of strengthening outrigger technology is a main driving force for the development of high-rise building construction technology.The strengthening effect of ordinary rigid outriggers is very obvious,but it is easy to cause sudden changes in floor stiffness and relatively weak energy dissipation performance.Combining technologies such as antibuckling bracing and viscous damper with ordinary outrigger technology in super high-rise buildings can improve the energy consumption effect of outrigger while exerting the effect of strengthening stiffness.The performance of ordinary rigid outrigger,BRB outrigger,viscous damping outrigger and viscous damping outrigger based with amplification technology were introduced.Compared with the ordinary rigid outrigger technology,the combination outrigger based on the new technology has more diverse material choices and more outstanding comprehensive performance.It can significantly improve the additional damping of the structure,reduce the seismic input,and improve the sudden change of vertical floor stiffness,providing better innovation and development space for super high-rise building structures.

关 键 词：高层建筑结构 伸臂技术 刚性伸臂 BRB伸臂 黏滞阻尼伸臂 放大技术 

分 类 号：TU97.3[建筑科学]