Abstract
The purpose of this study was to clarify the damage mechanisms of existing reinforced concrete (RC) slabs with reinforcing steel plates through the use of a three-dimensional nonlinear finite element analysis. An actual wheel load running test was simulated. Two panels of RC slab were cut from existing bridges and were used as the test specimens. Simulation models were built for each specimen with different modeling concepts for the rebar; RC elements, and solid elements. After the wheel load running simulations, the strains were examined through use of the strain contours at various cross sections. In the model using solid element for the rebars, the mechanisms for the generation and development of the horizontal cracks were analyzed in detail. Furthermore, the strain components of the referential elements were carefully analyzed for different loading cycles and positions. Although the decisive cause of the horizontal crack has not been clarified yet, the crack development processes were mostly demonstrated through this study.
Highlights
Attaching steel plates to the lower surface of reinforced concrete (RC) slabs damaged by traffic load is one of the widely-used reinforcing methods [1]
The load-resistant performance of the slab is improved by the composite action of the RC slab and steel plate [2]
The re-deterioration of RC slabs that have been reinforced with steel plates has been reported in recent years
Summary
Attaching steel plates to the lower surface of reinforced concrete (RC) slabs damaged by traffic load is one of the widely-used reinforcing methods [1]. The load-resistant performance of the slab is improved by the composite action of the RC slab and steel plate [2]. The effects of this reinforcement method have been theoretically and experimentally verified in previous research [3]. The damage mechanism of slab concrete reinforced with steel plate has not yet been clarified. The constitutive laws of concrete used are based on the elasto-plasticity/fracture model with a smeared crack model The reliability of this code has been presented for the analysis of RC slab and steel-concrete composite slabs [9, 10].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
