北京建筑大学学报

GFRP连接件作为连接内外叶钢筋混凝土板和中间保温层的重要部件，是影响墙体结构性能和热工性能的关键因素。利用Abaqus分析软件，采用数值方法，对4种GFRP连接件的拉拔承载力进行了研究，并对比试验结果验证了模型的有效性。之后通过参数化分析研究了混凝土强度等级、连接件锚固深度等因素对GFRP连接件拉拔承载力的影响，数值分析结果表明：GFRP连接件拉拔承载力随着混凝土强度的提高而增大，但当混凝土强度提高到C50时，增长缓慢；最大拉拔承载力随着连接件锚固深度的增加而增大，且随着深度的增加，最大拉拔承载力的增长值越大。最后，结合破坏模式对GFRP连接件拉拔承载力进行了理论分析，结合大多数构件表现出的混凝土劈裂破坏，通过数据回归方法修正了劈裂破坏椎体的形状影响系数β_h,提高了抗拔承载力公式的精确度。

The interconnecting elements between the inner and outer steel girders and the intermediate insulating layers, known as GFRP connectors, play a vital role in determining the thermal and structural performance of the wall. In this study, Abaqus analytical software was used to simulate the tensile pull-out tests of four distinct types of GFRP connectors and validate the finite element models. Then, parametric analysis was performed by adjusting variables such connector anchorage depth and concrete strength grade. Tensile pull-out capacity of the models was assessed using calculated values obtained from formulae. The results demonstrate that when concrete strength increases, so does the specimens' maximum load carrying capability, and that once concrete strength grade reaches a specific point C50, the growth rate gradually slows down. Practical engineering should prioritize cost-effectiveness; the maximum tensile bearing capacity increases with connector anchorage depth, and the growth value of the maximum tensile capacity increases with the increase of depth; finally, a theoretical analysis was conducted on the tensile bearing capacity of GFRP connectors based on their failure modes. Taking into account the concrete splitting failure exhibited by most components, the influence coefficient β_h of the splitting failure cone was corrected through data regression method, improving the accuracy of the formula for tensile bearing capacity.