J-Shaped Floor Anchor for Concrete-to-Cellulosic Load Transfer
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Solution Overview
Problem
Existing concrete floor systems face challenges in efficiently connecting a concrete layer to a sub-floor, particularly in distributing load and preventing structural damage due to the weight of the concrete, which can lead to inadequate load resistance and potential cracking.
Innovation Solution
A J-shaped anchor system is introduced, comprising a first portion that attaches to a cellulosic sub-floor and a second portion embedded within the concrete layer, featuring nailing teeth, locator tabs, and shear tabs to secure the anchor to both the sub-floor and concrete, ensuring a strong and stable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick corrugated steel deck is used to support poured concrete, then the floor can support the weight of the concrete, but the significant weight adds burden to the building structure
Solution Approach 1:
The floor system is segmented into distinct layers: a lighter cellulosic sub-floor composed of individual members, and a concrete layer poured over it. This segmentation allows the concrete to provide compression strength while the cellulosic members provide structural support, reducing the overall weight compared to a solid steel deck while maintaining load-bearing capacity.
Solution Approach 2:
The invention uses a composite floor system combining cellulosic material (wood or engineered wood products) with concrete. The cellulosic sub-floor provides tensile strength and structural support, while the concrete layer provides compression strength and a finished surface, creating a lightweight yet strong composite structure that reduces dead load on the building framework.
2Stability of the object's composition
If the concrete layer is poured over the corrugated steel deck, then a complete floor structure is formed, but inadequate connection between layers can lead to structural damage and cracking
Solution Approach 1:
The anchors are installed in the cellulosic sub-floor before the concrete is poured. This preliminary action ensures that the connection elements are properly positioned and secured to the sub-floor, allowing the concrete to be poured and bonded to the anchors, creating a reliable mechanical connection that prevents structural damage and cracking under load.
Solution Approach 2:
The anchors serve as intermediary elements between the cellulosic sub-floor and the concrete layer. These anchors mechanically connect the two materials, transferring loads and preventing relative movement, thereby ensuring structural integrity and preventing cracking at the interface between the sub-floor and concrete.
3Strength
If conventional anchoring methods are used to connect concrete to sub-floor, then connection is achieved, but load distribution is inadequate leading to potential structural damage
Solution Approach 1:
The anchors extend in multiple dimensions: vertically into the cellulosic sub-floor and horizontally into the concrete layer. This multi-dimensional configuration allows the anchors to distribute loads in both vertical and horizontal directions, improving load distribution across the floor assembly and reducing stress concentrations that could lead to structural damage.
Solution Approach 2:
The anchors provide localized reinforcement at critical connection points between the sub-floor and concrete. By concentrating connection strength at specific locations where loads are transferred, the anchors improve overall load distribution while maintaining structural integrity, preventing damage at the interface between the two floor layers.
Data Source
AI summary
An anchor for connecting a concrete layer of a floor to a cellulosic layer of the floor, the cellulosic layer comprising a plurality of cellulosic members joined together in a side-by-side arrangement, the anchor including a first portion to extend between two adjacent cellulosic members of the cellulosic layer into the concrete layer of the floor. The first portion includes attachment structure to attach the first portion to one of the two adjacent cellulosic members of the cellulosic layer to attach the anchor to the cellulosic layer. An upper edge margin of the first portion is disposed within the concrete layer when the first portion is attached to the cellulosic layer. A second portion extends from the upper edge margin in a first direction that is transverse to the first portion. The second portion is spaced apart from the cellulosic layer and embedded within the concrete layer of the floor to attach the anchor to the concrete layer.