Kaiser railway slab shield tunnel floor slab
Lightweight construction using half precast results in a sense of unity in the finished product, as approximately half of the slab section is cast on-site, and it also contributes to the reduction of formwork.
This is a mid-floor slab for a shield tunnel based on the "Kaiser Railway Viaduct Slab." It is a rational slab made using high-quality precast (PCa) components manufactured in a factory, excelling in durability and cost-effectiveness. To enhance the integration with cast-in-place concrete, a half-precast mid-floor slab with Kaiser truss reinforcement is installed. After reinforcing the upper rebar as a formwork, fresh concrete is poured to form an integrated mid-floor slab. 【Features】 ■ The Kaiser truss reinforcement serves as a reliable spacer for on-site reinforcement, significantly reducing construction time and labor through improved workability. ■ The integration effect from the Kaiser truss reinforcement provides excellent fatigue durability. ■ It can be constructed without supports, serving as both formwork and scaffolding, eliminating the need for assembly and disassembly of support structures.
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