Steel plate-reinforced concrete (SPRC) coupling beams, in the form of a reinforced concrete (RC) beam with one (or more) internally embedded steel plate, have become a promising alternative in concrete coupling beam design. While existing studies have been carried out to demonstrate the favorable seismic performance of SPRC coupling beams, the effects of various factors on the seismic behavior of such coupling beams have not yet been fully investigated. In addition, existing studies have been mainly focused on relatively short SPRC coupling beams dominated by shear failure. Against this background, five SPRC coupling beams with a span-to-depth ratio of 2.5 were tested under reversed cyclic loading in the present study. One diagonally reinforced concrete coupling beam was also tested for comparison. The experimental variables included the steel plate configuration, steel plate ratio, and longitudinal steel bar reinforcement ratio. The test results confirmed that the SPRC coupling beams possessed high load-carrying capacity and large plastic deformation. The test results also demonstrated that the steel plate ratio and steel bar reinforcement ratio had significant effects on the behavior of SPRC coupling beams: the strength increased with the steel plate ratio or the steel bar reinforcement ratio while the ductility reduced obviously as the steel bar reinforcement ratio increased. Finally, a theoretical analysis was proposed to evaluate the failure mode and the load-carrying capacity of SPRC coupling beams.

带有一个（或多个）内部嵌入钢板的钢筋混凝土（RC）梁形式的钢板-钢筋混凝土（SPRC）耦合梁已成为混凝土耦合梁设计中的一种有前途的替代方法。尽管已经进行了现有的研究来证明SPRC耦合梁的良好抗震性能，但尚未充分研究各种因素对这种耦合梁的抗震性能的影响。另外，现有的研究主要集中在剪切力占主导的相对短的SPRC耦合梁上。在此背景下，本研究在反向循环载荷下测试了跨度与深度之比为2.5的五个SPRC耦合梁。还测试了一根对角钢筋混凝土连接梁以进行比较。实验变量包括钢板构型，钢板比和纵向钢筋配比。试验结果表明，SPRC耦合梁具有较高的承载能力和较大的塑性变形。试验结果还表明，钢板比和钢筋配比对SPRC耦合梁的性能有显着影响：强度随钢板比或钢筋配比的增加而增加，而延展性则随着钢筋的增加而明显降低。比例增加。最后，提出了理论分析以评估SPRC耦合梁的破坏模式和承载能力。试验结果表明，SPRC耦合梁具有较高的承载能力和较大的塑性变形。试验结果还表明，钢板比和钢筋配比对SPRC耦合梁的性能有显着影响：强度随钢板比或钢筋配比的增加而增加，而延展性则随着钢筋的增加而明显降低。比例增加。最后，提出了理论分析以评估SPRC耦合梁的破坏模式和承载能力。试验结果表明，SPRC耦合梁具有较高的承载能力和较大的塑性变形。试验结果还表明，钢板比和钢筋配比对SPRC耦合梁的性能有显着影响：强度随钢板比或钢筋配比的增加而增加，而延展性则随着钢筋的增加而明显降低。比例增加。最后，提出了理论分析以评估SPRC耦合梁的破坏模式和承载能力。强度随钢板配比或钢筋配比的增加而增加，而延展性随钢筋配比的增加而明显降低。最后，提出了理论分析以评估SPRC耦合梁的破坏模式和承载能力。强度随钢板配比或钢筋配比的增加而增加，而延性随钢筋配比的增加而明显降低。最后，提出了理论分析以评估SPRC耦合梁的破坏模式和承载能力。