Integrated Waffle Slab Assembly for Fewer Hoisting Operations
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Solution Overview
Problem
Conventional precast waffle slabs require numerous hoisting operations, prolonging construction time and increasing costs in large-scale factory projects, while maintaining structural strength is crucial for semiconductor plants.
Innovation Solution
A waffle slab structure comprising a series of waffle slabs connected by beams with integrated rebar cages and shearing plates, allowing for staggered rebar arrangements to minimize hoisting operations and enhance structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional precast waffle slabs are used as single-piece square plate structures, then each slab must be hoisted and placed individually, but this increases the number of hoisting operations and prolongs construction time
Solution Approach 1:
The patent combines multiple individual waffle slabs into a single integrated precast unit with interconnected voids. This merging eliminates the need for multiple separate hoisting operations, as the entire combined structure can be hoisted and installed as one piece, thereby reducing construction time and improving productivity.
2Strength
If multiple precast beams and columns are utilized to ensure structural strength, then fast construction is enabled, but the complexity of assembling multiple components increases
Solution Approach 1:
The patent integrates beam and column structural elements directly into the precast waffle slab unit, creating a combined structural component. This reduces the number of separate assembly operations needed while maintaining the required structural strength, thereby simplifying the overall assembly process.
Solution Approach 2:
The structural elements (beams and columns) are pre-integrated into the waffle slab unit during manufacturing rather than being assembled on-site. This preliminary action ensures structural strength is built-in while reducing on-site assembly complexity and time.
3Manufacturing precision
If conventional hoisting methods are used for each individual slab, then placement precision can be controlled, but hoisting costs and construction time increase significantly
Solution Approach 1:
By merging multiple slabs into a single large precast unit, the number of hoisting operations is reduced from multiple individual lifts to fewer larger lifts. This improves construction efficiency and productivity while modern hoisting equipment can still maintain adequate placement precision for the larger units.
Data Source
AI summary
A waffle slab structure, floor structure and method for constructing a floor structure are provided, in which the waffle slab structure comprises a plurality of waffle slabs and at least one beam. The plurality of waffle slabs are connected in series along a longitudinal axis. Each of the plurality of waffle slabs comprises a plurality of through holes therein. Each of the at least one beam comprises an upper portion and a lower portion opposite to the upper portion. The upper portion of the beam is arranged between two adjacent waffle slabs and is integrated with the two adjacent waffle slabs.