Mechanical Study on Short Timber Columns Reinforced by Different Methods of FRP under Axial Compression

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In this paper, the effect of different enwrapping methods on the mechanical behaviour of short timber columns were presented and analysed.Five timber columns reinforced by CFRP and AFRP with two enwrapping forms (hoop and spiral) were tested under the axial compressive.The failure mechanism of specimens, the load-displacement relationship and the load-strain relationship were analyzed. Test results showed that the reinforcement with FRP can obviously improve the compressive bearing capacity of the columns and the highest improve ratio is 57.5%. The compressive stress of specimens reinfoced with hooped FRP sheets is much higher than the ones with spiral method. And the lateral deformations of reinforced specimen is greatly constrained by FRP. In addition, the knags of the wood will affect the mechanical behavior of columns on a large extent.

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968-971

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September 2013

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