带暗支撑短肢剪力墙及核心筒抗震研究与应用

提出了钢筋混凝土带暗支撑异形截面短肢剪力墙,提出了带暗支撑核心筒。对不同设计参数、不同受力特点的钢筋混凝土带暗支撑异形截面(一字形、T形、L形、Z形)短肢剪力墙及带暗支撑核心筒模型进行了低周反复荷载下的抗震性能试验研究,较系统地分析了其承载力、刚度、延性、滞回特性及耗能能力。在试验研究的基础上,建立了带暗支撑异形截面短肢剪力墙及核心筒的力学模型,提供了抗震设计方法,在实际工程应用中取得了良好的效果。

SEISMIC PERFORMANCE AND ENGINEERING APPLICATION OF RC SHORT-PIER SHEAR WALLS AND CORE WALLS WITH CONCEALED BRACINGS

In this paper, reinforced concrete with special-shaped short-pier shear wall and core walls with concealed bracing are proposed and systemically investigated. Twenty-eight 1:2 scale special-shaped (including blade-shaped, T-shaped, L-shaped and Z-shaped) short-pier shear wall specimens,four 1:3 scale L-shaped coupled short-pier shear wall specimens and two 1:6 scale core walls specimens were designed and tested under cyclic loading to assess their seismic performance. The load-carrying capacity, stiffness, ductility, hysteretic behavior and energy dissipation of the shear wall are discussed. On the basis of these tests, mechanical models and seismic design methods for the special-shaped short-pier shear wall and core walls with concealed bracing are suggested. The significant effect on improving the seismic performance of structure is verified when applying the core walls with concealed bracing in one building.