Flexural performance of the wood core composite T section beams

摘要

A new type of T section beam is proposed in this paper, which is mainly composed of Fiber reinforced polymers (FRP) shell and light wood core. The wood core composite T section beams has the following advantages :the integration of the vacuum infusion technology, can avoid the problem of interface slip of steel-concrete beams in the actual process, and between with the traditional composite beam interface with shear stud connections, few construction procedures, relatively simple, but also further improving the interface properties of T section beams. Through four point bending test, the mechanical properties, failure mode, flexural capacity, stiffness and ductility of T section beam with wood core composite were obtained. The test results show that the T-400-60 specimens compared to the specimens of T-400-40 and T-400-20 specimens, the bearing capacity is increased by 34% and 46%, while the stiffness is increased by 40% and 49% respectively, indicating the flange height type of The wood core composite T section beams on the bearing capacity and stiffness of the great influence.