Flexural Capacity of the Normal Sections of Concrete Beams Strengthened with Corrugated Steel Plates

Author:

Feng Xianda1ORCID,Liu Dejun2ORCID,Long Xiao3,Duan Kang4,Zuo Jianping2,Liu Wei2,Dong Haiyang2

Affiliation:

1. School of Civil Engineering and Architecture, University of Jinan, Jinan 250024, China

2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China

3. Sichuan Dujiangyan Water Conservancy Development Center, Dujiangyan 611830, China

4. School of Civil Engineering, Shandong University, Jinan 250101, China

Abstract

To explore the law of load-carrying performance enhancement of concrete beams reinforced with corrugated steel plates (CSPs), three groups of controlled bending tests were conducted on five beam specimens. The load-bearing capacity of concrete members commensurately increased with the thickness of reinforcing flat and corrugated steel plates. Additionally, for the same amount of steel, the load-bearing capacity of concrete beams improved more with CSP reinforcement than with reinforcement with flat steel plates. Accordingly, a theoretical formula for the moment of inertia of the combined section of a CSP-reinforced concrete beam was derived. Comparison verification showed that the calculation results for the beams reinforced with CSPs of different thicknesses were highly accurate. Finally, based on the damage mode of the CSP-reinforced concrete beam specimens, a formula for calculating the flexural bearing capacity of the positive cross-section of the beam with corrugated steel reinforcement was established. The calculated values agreed with the experimental values, which validated the flexural load capacity theory pertaining to positive sections and the flexural capacity model for reinforced beams.

Funder

National Key R&D Program of China

National Natural Science Foundation of China

Joint Fund of the State Key Laboratory of Coal Resources

Beijing Outstanding Young Scientist Program

Fundamental Research Funds for the Central Universities

Publisher

MDPI AG

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