装配式混凝土框架结构现状与创新结构体系

The status and Innovative structural system of Fabricated concrete frame structure

装配式钢筋混凝土结构是我国"十三五"期间绿色建筑及建筑工业化领域的重点发展方向,具有广泛的应用前景。本文介绍了国内外预制装配式钢筋混凝土节点及连接形式、框架结构的抗震性能,装配式钢筋混凝土结构减震技术的研究现状,并对现有研究成果进行分析总结,表明预应力拼接装配式结构、装配整体式结构、节点及连接的强度和刚度接近或等同于现浇水平,但其耗能能力低于现浇结构。为提高装配式钢筋混凝土结构体系的抗震性能,满足更高抗震性能目标要求,提出了一种具有较大抗侧刚度、塑性可控、易安装的装配式塑性可控铰钢筋混凝土框架-防屈曲支撑结构新体系,可提高结构在大震下的承载与耗能能力。

The fabricated reinforced concrete structure is the key development direction of green building and building industrialization during the 13th Five-Year Plan period in China,and has a wide range of application prospects.This paper introduces the seismic performance of joints and connection forms,prefabricated reinforced concrete frame structures and the research status of seismic adoption technology of prefabricated reinforced concrete structures at home and abroad.Also the existing research are summarized.These results show that the strength and stiffness of prefabricated structures,integral prefabricated structures,joints and connections are close to or equal to those of cast-in-place structures,but their energy dissipation capacity is lower than that of cast-in-place structures.In order to improve the seismic performance of prefabricated reinforced concrete structures and meet the requirements of higher seismic performance,an innovative type of prefabricated plastic-deformation controllable hinge reinforced concrete frame and anti-buckling bracing structure with large lateral stiffness,controllable plasticity and easy installation is proposed.