Comparison of Seismic Behaviour for a Single Unit Tunnel Form RC Building before and after Repaired

Abstract

Repairing and strengthening the structures are gaining more attention from many researchers and structural engineers after the structures suffered damages from natural disasters. Tunnel form RC buildings which are not designed according to seismic code of practice are very vulnerable to ground motion when located to near field earthquake. This paper presents the method of repair and strengthening of 3-storey tunnel form building subjected to in-plane lateral cyclic loading. The building was strengthened using the combination method of steel angle, steel plate and Carbon Fiber Reinforce Polymer (CFRP) sheet. The results show that the lateral strength capacity is increase by 15.66%, ductility increase by 53.57% and equivalent viscous damping increase by 28.88% for the first cycle and 33.65% for the second cycle. However, the stiffness of the structure reduce by 56.6%. It can be concluded that this method can be adopted for the damage of tunnel form building system.

Seismic Behavior of Tunnel Form Building under Lateral Cyclic Loading

“…It can be seen that the value of EVD decreased when the area of the hysteresis loops recorded at LVDT1 was very small, or vice versa. It can be concluded that the EVD for the repaired specimen became steadier when compared to the unrepaired specimen [30].…”

Strengthening of Single Bay Tunnel Form Building using Steel Angle, Steel Plate and CFRP Under Out-of-Plane Cyclic Loading

“…El-Sokkary et al studied on the rehabilitation of RC shear wall using fiber reinforce polymer (FRP) to increase the flexural and shear capacities of the 6 th storey wall panel [4]. Anuar et al studied the performance of 3-storey TFB under in-plane lateral cyclic loading [5]. The visual observation indicated that the wall-slab joint and shear wall of the first and second floor suffered severe cracks.…”