钢支撑-混凝土框架结构设计案例及常见问题分析

Analysis of design cases and common problems of steel braced concrete frame structures

钢筋混凝土框架结构由于其灵活的建筑空间布置和用材的经济性,有着比较广泛的应用。但是,在地震高烈度区,层数较高的钢筋混凝土框架结构,结构变形和位移等计算指标较难满足规范要求,使用受到一定限制。而钢支撑-混凝土框架结构,较好地改善了框架结构的受力和变形,在抗震设计中形成了双重防线,是一种抗震性能较好的结构形式。钢支撑-混凝土框架结构作为一种较新的结构形式,还缺少充分的研究和经验。本文首先总结阐述了钢支撑-框架结构的设计要求,然后结合实际案例,从基本要求、结构布置、计算、节点设计四个方面分析了钢支撑-框架结构的设计中应注意的典型问题,并总结了运用规范和解决问题的方法,对类似工程的设计有一定的参考价值。

Reinforced concrete frame structure is widely used because of its flexible space arrangement and material economy.However,in the seismic high intensity area,the calculation indexes of reinforced concrete frame structure with high number of layers,structural deformation and displacement are difficult to meet the requirements of the code,and the use is limited to some extent.The steel bracing-concrete frame structure improves the stress and deformation of the frame structure,and forms a double defense line in the seismic design,which is a kind of structure with good seismic performance.As a new structural form,steel bracing-concrete frame structure lacks sufficient research and experience.This paper analyzes the typical problems that should be paid attention to in the design of steel support frame structure combined with practical cases,summarizes the application of norms and methods to solve problems,and has certain reference value for the design of similar projects.