RELIABILITY ASSESSMENT OF THE STRENGTH CAPACITY OF SOLID TIMBER COLUMNS IN FRP LAMINATES AND SPRAYS

RELIABILITY ASSESSMENT OF THE STRENGTH CAPACITY OF SOLID TIMBER COLUMNS IN FRP LAMINATES AND SPRAYS

Abstract:

Carbon Fiber-Reinforced Polymer (CFRP) composite materials have provenvaluable properties and suitability to be used in the construction of new buildings and in upgrading theexisting ones. One of the objectives of this study is to laminate solid timber columns with varying thicknesses of CFRP laminates to check the patterns of the stresses, displacements and reactions of the solid timber columns. An analytical model for CFRP strengthened timber columnswith length of 3700mm, width of 150mm, depth of 200mm and varying thicknesses of 0.2mm, 0.4mm, 0.6mm, 0.8mm and 1 mm with coded specified axial applied load for three different timber species of Abura, Afromosia and Confusa. The secondlayer of CFRP is consideredmost effective wrapping scheme due to the cost effectivenessof increase in axial applied load. This research findings have shown that CFRP laminates and sprays are not only effective in restoring the lost capacity of damaged timber columns sections, but are also quite effective in strengthening of timber columns sections to sustain higher loads,extend their fatigue life and reduce crack propagation. The reliability assessment of composite timber columnswith varioustimber species was also executed using MATLAB programming. Adequate safety indices were obtained for different load ratio, MOE of CFRP, thickness of CFRP and strength classes of timber species..

RELIABILITY ASSESSMENT OF THE STRENGTH CAPACITY OF SOLID TIMBER COLUMNS IN FRP LAMINATES AND SPRAYS

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