Flexural Behavior of Tightly Spliced Concrete Composite Slabs with Diagonal Reinforcement
Zechao Zhang, Kejian Cai, Jiang Yin
TL;DR
This paper introduces two new concrete slab designs with diagonal reinforcement to improve load transfer at joints, showing performance similar to traditional cast-in-place slabs.
Contribution
The study proposes and evaluates two novel composite slab designs with diagonal reinforcement for improved joint performance.
Findings
Both slab types show good synergy between precast base and composite layer under load.
Bending capacities at joints are comparable to cast-in-place slabs.
Design recommendations are provided based on finite element analysis.
Abstract
To improve load transfer performance at the joints of standardized closely spaced concrete composite slabs, this study proposes two novel composite slab designs: the bent diagonal-reinforced tightly spliced slab and the ribbed diagonal-reinforced tightly spliced slab. The flexural behavior of these two types of inclined reinforcement closely spaced composite slabs was investigated through static loading tests and ABAQUS finite element simulations. The results indicate that both slab types exhibit excellent synergy between the precast base slab and the composite layer under load, achieving bending capacities at the joint sections comparable to those of cast-in-place slabs. Based on the finite element analysis, design recommendations for the Ribbed Diagonal-Reinforced Tightly Spliced Slab are provided, offering a practical reference for large-scale engineering applications.
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Taxonomy
TopicsStructural Behavior of Reinforced Concrete · Innovative concrete reinforcement materials · Structural Load-Bearing Analysis