Precast Composite Floor Panel Weight Reduction
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Solution Overview
Problem
Conventional precast concrete floor systems are heavy, requiring stronger structural elements and complex connections, which increases material usage, costs, and limits building height due to soil load bearing capacity constraints, and they do not allow for easy passage of utilities through the floor structure.
Innovation Solution
A composite floor panel system featuring a concrete floor deck with edge members forming a channel and a binder material to create a joint between panels, reducing material usage and allowing for utility passage, and precasting panels to eliminate the need for a metal deck and simplify construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional precast single tee and double tee panels are used, then floor coverage area is achieved, but weight increases significantly requiring heavier structural elements
Solution Approach 1:
The floor panel is divided into modular units with standardized dimensions (8 feet wide, 25-40 feet long). Each panel segment contains integrated beams and deck portions that can be independently precast and assembled, reducing the weight of individual structural elements while maintaining overall floor coverage area through systematic arrangement of multiple segments.
Solution Approach 2:
The panel utilizes composite construction combining concrete deck portions with integrated beam structures. The composite design optimizes material distribution, placing structural elements only where needed for support, thereby reducing overall panel weight compared to conventional solid precast panels while maintaining structural integrity and floor coverage.
2Strength
If heavier structural elements are used to support heavy floor panels, then structural strength is improved, but material usage and construction costs increase
Solution Approach 1:
Structural strength is concentrated in specific localized regions where beams are integrated into the panel structure. Rather than uniformly increasing the weight and material of entire structural elements, the design provides enhanced strength only at critical load-bearing locations, optimizing material usage while maintaining required structural strength.
Solution Approach 2:
Structural reinforcement and beam integration are performed during the precasting phase before field installation. This preliminary action allows for optimized material placement and reduces the need for additional structural elements during construction, thereby reducing overall material usage while ensuring structural strength is achieved in advance.
3Stability of the object's composition
If conventional precast panels with complex connections are used, then structural stability is achieved, but connection complexity and installation time increase
Solution Approach 1:
The connection system merges the panel end portions with integrated beam structures that extend from adjacent panels. This combining of structural elements creates interlocking joints that provide structural stability through the unified geometry of the connected components, eliminating the need for separate complex connection hardware and simplifying the installation process.
Solution Approach 2:
The panel design incorporates self-aligning and self-supporting features where the integrated beams and deck portions automatically position and stabilize adjacent panels during installation. The structural geometry itself provides the connection mechanism, allowing panels to serve their own connection function without requiring additional complex joining devices or procedures.
4Force
If heavier columns and beams are used to support heavy floor panels, then load bearing capacity is improved, but building height is limited due to soil load bearing capacity
Solution Approach 1:
The floor system is segmented into lighter modular panels that distribute structural loads more efficiently to the building's vertical support elements. This segmentation reduces the concentrated weight on columns and beams, allowing for reduced structural member sizes that in turn reduce the cumulative dead load on the foundation, thereby enabling greater building height within soil load bearing limits.
Solution Approach 2:
The composite panel structure optimizes the strength-to-weight ratio of floor elements, reducing overall floor system weight while maintaining required load bearing capacity. This weight reduction decreases the cumulative dead load transmitted through columns and beams to the foundation, allowing for increased building height before reaching soil load bearing capacity limits.
5Productivity
If conventional precast panels are used, then rapid erection is achieved, but utility passage through the floor structure is difficult
Solution Approach 1:
The modular panel design incorporates predetermined utility passage openings and channels as integral features of the panel structure. Utilities can be routed through these pre-planned pathways during installation, maintaining rapid erection speeds while enabling straightforward utility installation without requiring post-construction modifications or complex routing through solid panel structures.
Data Source
AI summary
A composite floor panel includes a concrete floor deck having a side portion and an edge member secured to the side portion. The edge member is configured to be positioned in proximity to an adjacent edge member. The adjacent edge member is coupled to an adjacent concrete floor deck. The edge member is further configured to have a junction formed between the edge member and the adjacent edge member to define a channel. The edge member is further configured to have a binder material placed in the channel to form a joint between the concrete floor deck and the adjacent concrete floor deck.