Full-Cavity Concrete Slab with Steel Framework
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Solution Overview
Problem
Existing reinforced concrete slab structures in construction face issues such as long construction periods, complicated processes, high costs, poor energy efficiency, environmental concerns, and limited durability, necessitating a more integrated and efficient solution for building structures.
Innovation Solution
A full-cavity concrete slab structure with a steel bar framework, featuring an external concrete shell with oblique partitions forming enclosed air cavities and a steel bar framework of horizontal and vertical bars, which eliminates the need for exterior and interior veneers and embedded thermal-insulation materials, providing enhanced load-bearing capacity, earthquake resistance, and disaster-proofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional solid cast-in-place concrete slab structures are used, then load-bearing capacity is achieved, but construction period is extended and construction process becomes complicated
Solution Approach 1:
The concrete slab is segmented into a framework structure with steel bars forming a spatial grid, and concrete is poured into the framework to form a composite structure. This segmentation allows for pre-fabrication of the steel framework and parallel construction processes, significantly reducing the construction period while maintaining load-bearing capacity through the collaborative work of steel and concrete.
2Strength
If traditional reinforced concrete structures are used, then structural strength is achieved, but material consumption increases and cost rises
Solution Approach 1:
The invention employs a composite material system combining steel bars arranged in a spatial framework with concrete. The steel framework provides tensile strength and structural integrity, while the concrete infill provides compressive strength and encloses the steel bars. This composite approach optimizes material utilization, reducing overall concrete consumption compared to traditional solid slab structures while achieving superior structural strength through the synergistic combination of materials.
3Stability of the object's composition
If solid concrete slab structures are used, then structural integrity is achieved, but energy efficiency deteriorates due to poor thermal insulation
Solution Approach 1:
The concrete slab structure implements local quality differentiation by creating a framework with voids or reduced concrete density in specific regions, rather than uniform solid construction. The steel framework provides structural integrity while the reduced concrete volume or incorporated air pockets in non-critical areas improve thermal insulation performance. This localized optimization maintains structural strength where needed while reducing heat transfer through the slab, thereby improving energy efficiency.
4Ease of manufacture
If traditional concrete slab structures are used, then construction simplicity is maintained, but environmental protection performance deteriorates
Solution Approach 1:
The invention incorporates insulation layers or thermal barriers within the framework structure that provide feedback control for heat flow. These layers reflect or resist heat transfer, reducing energy loss and thereby reducing the environmental impact associated with heating and cooling requirements. The framework design also allows for integration of sustainable materials and construction methods that minimize environmental pollution while maintaining construction simplicity through standardized assembly processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves significant material savings (30-50% concrete reduction), improved stability, energy efficiency, and environmental protection, with a wide range of applications for walls, floors, and roofs, while ensuring self-safety and self-environmental protection without additional insulation or fireproof materials.
Implementation Method 1
two side panels of the external concrete shell form enclosed air cavities together with the corresponding oblique concrete partitions and the sealed ends at the both ends
Implementation Method 2
Steel bars mainly bear the tension and concrete mainly bears the pressure
Implementation Method 3
Steel bars mainly bear the tension and concrete mainly bears the pressure
Data Source
AI summary
The present invention relates to a full-cavity concrete slab structure with high integrity and stability and excellent performance, a cavity structure, and a steel bar framework. The slab type concrete structure is internally provided with a slab type concrete structure unit. An external concrete shell of the slab type concrete structure unit is internally provided with oblique concrete partitions. Both ends of the external concrete shell are sealed. Two side panels of the external concrete shell form enclosed air cavities together with the corresponding oblique concrete partitions and the sealed ends at the both ends. The air cavities are arranged in continuous rows in a staggered manner. The steel bar framework is provided in the external concrete shell and the oblique concrete partitions. The present invention implements high integration of energy saving and environmental protection of structures and buildings. The slab structure not only satisfies the load-bearing resistance requirements of an original wall structure, but also makes the structure safer and more earthquake-resistant and disaster-proof, namely, the self-safety, self-energy saving, and self-environmental protection of the structure are fully achieved. The slab structure needs neither an exterior veneer and an interior veneer, nor materials such as middle embedded thermal-insulation and fireproof materials, and can be applied as a variety of concrete slab structures for buildings, and thus the product has a wide range of applications.