Dalam kajian ini, keberkesanan polimer gentian bertetulang (FRP) komposit untuk sambungan rasuk-tiang luaran telah diselidiki melalui penggunaan kaedah analisa elemen terhingga. Perisian ANSYS telah digunakan dalam kajian dan model kajian berdasarkan data ujian makmal yang telah dilaporkan. Pengesahan keputusan analisa kaedah elemen terhingga dilakukan melalui perbandingan dengan keputusan yang diperolehi daripada ujian makmal yang telah dilaporkan. Selepas pengesahan, model analisa dibangunkan untuk mengkaji pembaikpulihan sambungan rasuk-tiang luaran. Enam sambungan rasuk-tiang konkrit bertetulang luaran termasuk satu model sambungan kawalan (tanpa FRP) dan lima model sambungan yang telah dibaikpulih dengan susunatur FRP yang berlainan telah dianalisa. Daripada keputusan analisa ke atas sambungan rasuk-tiang bertetulang yang dikenakan susunatur FRP yang berlainan, dapat disimpulkan bahawa darjah penambahbaikan dalam keupayaan menanggung beban sambungan rasuk-tiang berada dalam julat 17% ke 28% untuk kelima-lima susunatur FRP yang dipertimbangkan. Kajian ini juga mendapati bahawa susunatur FRP dimana lapisan FRP dalam bentuk L diletak diatas dam bawah sambungan rasuk-tiang bersama-sama bungkusan FRP pada bahagian persim pangan rasuk-tiang dan huiung lapisan FRP menunjukkan peningkatan keupayaan menanggung beban yang tertinggi.
In this study, the effectiveness of composite fibre reinforced polymer (FRP) laminates for exterior beam-column joint was studied through a finite element analysis. ANSYS was used for finite element analysis and a model based on an experimental test reported in literature was used. The FEM results were validated by comparing with reported experimental results. The model was then developed to analyze rehabilitation of exterior beam-column joint. Six exterior RC beam-column joint specimens including a control specimen (without FRP) and five retrofitted specimens with different arrangements of FRP were studied. From nonlinear analysis of RC joint with FRP overlays, degree of improvement in carrying capacity of the reinforced concrete beam-column joint was found to lie in the range of 17% to 30% for the five FRP laminate configuration considered. It was also found the use one of layer FRP laminate (L shape) applied on top and bottom of beam-column joint with wrapping placed at the junction of the beam-column joint and at end L shape FRP laminate yields the highest improvement in load carrying capacity.
Finite Element Analysis of RC Beam-Column Joint Strengthened with FRP Laminates