부산대학교 도서관

Experimental study was conducted to verify the fl exural strength of corrugated steel plate (CSP) for various types of reinforcement which include without stiff ening ribs, with diff erent thicknesses of additional steel ribs, and with steel ribs fi lled with concrete. The test results showed that the fl exural strength of the strengthening structure of the additional steel plate using the same CSP as the main steel plate was more than 2 times that of the single CSP, and fl exural strength of the concrete-fi lled corrugated plates showed at least 3.3 times higher fl exural strength compared to the strength of single CSP. According to the force performance of the CSP strengthening structures, the nominal bearing capacity calculation formula was proposed. Specimens showed higher fl exural strength than the nominal fl exural capacity, indicating that the proposed formula of nominal fl exural strength can eff ectively evaluate the strength of strengthening structures. A fi nite element model was established in ABAQUS software to verify the feasibility of nonlinear fi nite element method analysis on CSP strengthening structures and the parameter analysis was carried out. The simulation results showed that the reinforcement ratio had a great infl uence on the bearing capacity of the strengthening structure, and the bolt spacing was second. the compressive strength of concrete was not a signifi cant improvement eff ect of the bearing capacity of concrete-encased corrugated stiff ener structure, and the strength of concrete can be negligible. The optimization suggestions were proposed for the strengthening structure concerning other factors such as bolt spacing and strengthening ratio.