中文摘要：

为改善传统高层建筑剪力墙连梁的抗震性能，设计并制作3个内嵌钢板混凝土组合（SPC）连梁和1个交叉斜筋钢筋混凝土连梁试件并进行低周往复加载试验。试件变化参数包括连梁纵筋配筋率和配板形式。对比分析各连梁的破坏过程、滞回性能、耗能能力、强刚度退化、承载力、延性以及变形能力等。结果表明，连梁试件发生弯剪和弯曲两种破坏模式；增大连梁纵筋配筋率在提高承载力的同时降低了试件的延性变形；在配板率相同情况下，钢板形式由单钢板改变为拉结双层钢板，连梁受力性能相似，当单层钢板厚度较大时可采用双层钢板设计方案；钢板的设置可有效提高试件的承载力与延性，较好改善滞回曲线的捏拢效应，同时参与连梁端部塑性铰区的抗弯，提供较大的抵抗弯矩，钢板的受压作用也可提高塑性铰的转动能力。与交叉配筋钢筋混凝土连梁相比，利用钢板良好的承载力和延性变形能力，内嵌钢板混凝土组合连粱具有稳定的滞回性能和耗能能力且施工简单，其综合抗震性能优于传统配筋混凝土连梁。

英文摘要：

To improve the seismic behavior of coupling beams of conventional shear wall in high-rise buildings, three embedded steel plate reinforced concrete composite coupling beams （SPC） and one diagonally reinforced coupling beam was tested under cyclic loading. The variable parameters in tests include longitudinal reinforcement ratios and steel plate forms. The failure process, hysteretic behavior, energy dissipation, strength and stiffness degradation, bearing capacity, ductility and deformation performance were investigated. The failure modes of specimens include bending-shear and bending. Test results indicate that as longitudinal reinforcement ratio of coupling beam increases excessively, the bearing capacity of core walls may increase, but the ductile deformation may reduce. At the same plate ratio, the two specimens embedded with single plate and double decker plate have similar strength and deformation performance. In practice, double decker plate instead of single thick plate can be designed when the thickness of single plate is too large. It was found that embedded steel plates could improve the strength and the ductility of coupling beams. Compared with diagonally reinforced coupling beam, the pinch phenomenon of hysteretic curves was improved obviously. The plate provides greater capacity to resist the bending moment, and enhance rotation capacity of plastic hinge. Consequently, concrete composite coupling beams embedded with steel plate have more stable hysteretic performance and greater energy dissipation capacity, and can be constructed conveniently. Integrated seismic behaviors of $PC coupling beams are superior to those of diagonally reinforced coupling beams.