中文摘要：

通过对6个人字形无黏结内藏钢板支撑剪力墙试件的拟静力试验研究，对无黏结材料及支撑与墙板的间隙、墙板内钢筋配置、墙板端部加强构造以及钢板支撑周围有效宽度范围内采用普通混凝土，其余部分采用轻骨料混凝土的有效宽度墙板等因素对试件滞回性能的影响进行考察。试验结果表明，无黏结材料的均匀包裹、支撑与墙板间留有较小的间隙以及沿支撑轴向加密纵横向钢筋和拉结筋等构造措施，可以显著提高墙板局部抗弯和抗冲切承载力，改善试件的延性和耗能能力。支撑受压失稳时呈多波微幅弯曲变形状态，随压力增大，失稳半波数增多，支撑对墙板的局部冲切作用随之增大，使墙板局部弯曲或冲切破坏。直至破坏前，试件滞回曲线饱满稳定，骨架曲线基本呈现两折线的形式。试验还表明，当其他构造相同时，采用有效宽度墙板的试件和整个墙板均由普通混凝土制成的试件的滞回性能几乎相同，但前者自重轻，有利于墙板的安装和结构抗震。

英文摘要：

Six quasi-static tests were carried out to investigate the hysteretic behavior of chevron-shaped unbonded steel plate brace encased in reinforced concrete panel, referred to as panel of buckling restrained brace （panel BRB）. The influential parameters such as the unbonded material and the clearance between brace and panel, the configurations of steel bars and edge reinforcement, the so called effective width panel composed of normal weight concrete in the range of five times the width of the braces along the braces and lightweight concrete in the rest parts, were taken into consideration. The test results indicate that the panel BRB that has more uniform unbonded material, smaller clearance and denser steel bars along the braces possesses better ductility and energy dissipation capacity, because the local flexural and punching shear strength of the panel are greatly improved by these details. The core brace in compression exhibits a small amplitude flexural buckle with multiple waves. With compressive force of the braces increasing, both the number of buckling waves and the local punching force to the panel increase. Panel finally failed locally due to flexure or punching shear. The panel BRB has stable hysteretic behavior without the decrease of strength and stiffness before it fails, and its skeleton curve is close to a bilinear model. The tests also reveal that the hysteretic behavior of the specimens with the effective width panel nearly parallels that of the specimens with the normal weight concrete panel when the other construction details remain the same, however, the former kind of panel BRB would be advantageous to panel installation and aseismic performance due to its lighter weight.