Theoretical and Experimental research of pre-stressed CFRP tendon aluminum alloy beam with double struts

摘要

The external pre-stressing technique has been commonly used in the construction field because it can effectively improve the carrying capacity and stiffness of the structure and is widely applicable for many different types of structures. In this research, the pre-stressed CFRP tendon was used to strengthen aluminum alloy beam with two struts. Theoretical and experimental methods are used to study the stress distribution of the aluminum alloy beam and CFRP tendon. The theoretical solution is very close to the experimental results, So that the theoretical method is rational. The parameter analysis of the structure is also studied. Results of the parametric analysis shows that larger pre-stressing force, higher load capacity of beam, and CFRP tendon of larger diameter, higher load capacity of beam, and effect of increasing load capacity aluminum alloy beam strengthened by pre-stressed CFRP tendon is better than steel beam.