Perkuatan Pelat Lantai dengan Frp (Fibre Reinforced Polimer) (Studi Kasus : Gedung Sekolah Siantar)

Abstract

Structural strengthening is usually carried out as an effort to prevent structural damage or destruction. Strengthening or repairing a structure is necessary when it has suffered damage that results in the degradation of technical requirements, including strength, stiffness and ductility, stability, and resistance to specific performance criteria. This final project calculates the repair of the slab structure in the Siantar School building, where the repair will use FRP (Fiber Reinforced Polymer) as the main material to fix the damage to the Siantar School's slab structure. This final project analyzes the strengthening of the slab by calculating the slab moment using Conventional methods, Beam Theory, and also Chessboard Theory with SAP2000. After obtaining the largest moment on the slab, this data is used to calculate the slab's strengthening using FRP (Fiber Reinforced Polymer) and determine how many layers of FRP are used. The strengthening of this structure is planned to be 30% of the initial strength of the Siantar School building's slab structure. The slab reviewed is only in the classroom. From the calculation results, the Conventional Theory calculation yields a Support Moment of 2134.8 Kgf/m and a Field Moment of 1372.37 Kgf/m. The Beam Theory calculation results in a Support Moment of 1174.5 Kgf/m and a Field Moment of 557.25 Kgf/m. The Chessboard Theory calculation yields a maximum Support Moment of 1148.93 Kgf/m and a Field Moment of 485.855 Kgf/m. The moment used in the FRP calculation is the conventional moment. Here are the moment calculations after adding FRP to the floor slab: CFRP 30.92%, equivalent to 6601194.61 Nmm with 5 sheets of FRP, AFRP 48.43%, equivalent to 10339463.78 Nmm with 8 sheets of FRP, FRP 31.27%, equivalent to 6676954.04 Nmm with 10 sheets of FRP