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To effectively protect Chinese ancient timber buildings, CFRP (Carbon Fiber Reinforced Plastic) sheet was considered for strengthening by Dunjie means. An eave column in the Forbidden City was taken as example, its 1 2 scale models were built, including 1 intact model and 5 CFRP-Dunjie strengthened models. Axial compression experiments were carried out. Parameters such as curves of force-displacement, curves of force-strain, ultimate compressive strength, ductility, vertical stiffness and so on of the models were obtained. Strengthening effects of CFRP sheets were also discussed. Results show that compared to the intact model, axial compression strength of the CFRP strengthened models can improve about 0.2%~8.3%. Their compressive strain can also be restored 109.6%~126.5% in ring direction, 108.6%~160.7% in lengthwise direction. Ductility and axial compression stiffness values of the strengthened models are larger than that of the intact model during their destruction stage under loads. Stiffness degradation of all strengthened models is not obvious. Thus CFRP sheet has good effects for strengthening timber columns with decay roots by Dunjie means. © 2016, Editorial Office of Journal of Building Structures. All right reserved.
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