A precast concrete sandwich panel (PCSP) offers a good potential in the application of façade wall due to the improved energy efficiency. In this study, the structural performance of PCSP with pin-type glass fiber reinforced polymer (GFRP) connectors was investigated, and an optimization characterized by ribbed structural wythe was proposed and studied. Firstly, the pull-out and shear capacity of the pin-type connector were evaluated through direct tensile test and direct shear test, respectively. Thereafter, seven PCSP specimens were fabricated and tested under four points flexural load. The investigating parameters included the structural wythe thickness, loading direction, insulation bond, and section type of the structural wythe. The load-deflection relationship, crack pattern, failure mode, load-strain relationship, and degree of composite action of the PCSP were studied and compared. It was concluded that: (1) the tested PCSPs presented ductile failures; (2) the structural wythe thickness, loading direction and insulation bond would influence the cracking, yielding, and peak loads of the tested PCSP; (3) the PCSP with pin-type GFRP connectors could be designed as non-composite type owing to the low composite action; and (4) the proposed ribbed structural wythe could achieve a lightweight PCSP while considerable flexural stiffness and capacity could be retained.

预制混凝土夹芯板（PCSP）由于提高了能效，在幕墙的应用方面具有良好的潜力。本研究研究了带销型玻璃纤维增​​强聚合物（GFRP）连接器的PCSP的结构性能，并提出并研究了以肋状结构为特征的优化方案。首先，分别通过直接拉伸试验和直接剪切试验来评估销型连接器的拔出力和剪切能力。此后，制造了七个PCSP试样并在四点弯曲载荷下进行了测试。研究参数包括结构线的厚度，加载方向，绝缘粘结和结构线的截面类型。载荷-挠度关系，裂纹模式，破坏模式，载荷-应变关系，研究并比较了PCSP的复合作用程度。结论是：（1）被测试的PCSP表现出延性失效；（2）结构，厚度，载荷方向和绝缘结合会影响被测PCSP的开裂，屈服和峰值载荷；（3）由于低复合作用，带销型GFRP连接器的PCSP可以设计为非复合型；（4）提出的带肋结构的结构可以实现轻质PCSP，同时可以保留相当大的抗弯刚度和承载力。（3）由于低复合作用，带销型GFRP连接器的PCSP可以设计为非复合型；（4）提出的带肋结构的结构可以实现轻质PCSP，同时可以保留相当大的抗弯刚度和承载力。（3）由于低复合作用，带引脚型GFRP连接器的PCSP可以设计为非复合型；（4）提出的带肋结构的结构可以实现轻质PCSP，同时可以保留相当大的抗弯刚度和承载力。