Study on Tensile Performance of GFRP Connectors for Prefabricated Concrete Thermal Insulation External Wall Panels
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 αh of the splitting failure cone was corrected through data regression method,improving the accuracy of the formula for tensile bearing capacity.
万方数据
维普
