Concrete Floor Grid with Inflatable Void Formwork
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Solution Overview
Problem
Existing concrete floor structures face challenges in creating accessible void spaces that are structurally efficient and minimize material usage, as previous methods fail to provide effective solutions for forming voids that can be easily accessed and reinforced.
Innovation Solution
A concrete floor structure comprising a rigid framework with expandable inflatable tubular members and restraint members that maintain a truncated circular configuration, allowing for accessible voids that can be formed as pre-cast or cast pieces with apertures for service access, and utilizing a plug for closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional concrete floor structures are used, then structural strength is maintained, but material usage is excessive and void spaces are not accessible
Solution Approach 1:
The floor structure is segmented into solid concrete regions and void spaces, creating a hybrid structure that reduces material usage while maintaining structural integrity through strategic placement of voids and reinforcement elements
Solution Approach 2:
The floor structure implements local quality by having different material properties in different regions - solid concrete in load-bearing areas and void spaces in non-critical areas, optimizing both material efficiency and structural strength
2Loss of substance
If void spaces are created in concrete floors, then material usage is reduced, but accessibility and reinforcement become difficult
Solution Approach 1:
Reinforcement elements and access mechanisms are incorporated into the floor structure during the initial casting process, enabling future accessibility and reinforcement activities without requiring post-construction intervention
Solution Approach 2:
Access mechanisms serve as intermediaries between the external environment and the void spaces within the floor, enabling service installation and maintenance while preserving the structural integrity of the concrete
3Adaptability or versatility
If accessible void spaces are created, then service installation is facilitated, but structural complexity increases
Solution Approach 1:
The void spaces and access mechanisms are designed to serve multiple functions - providing pathways for various services (electrical, plumbing, HVAC), enabling future modifications, and maintaining structural efficiency, thereby reducing overall system complexity despite increased adaptability
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
This solution enables efficient creation of accessible voids within concrete floors, reducing material usage, enhancing seismic performance, and facilitating easier installation and servicing, while allowing for reduced labor and transportation costs with improved accuracy and speed.
Implementation Method 1
expandable inflatable tubular members which are expandable to an extent limited by the rigid framework
Data Source
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AI summary
An improved concrete floor arrangement is formed from a single cast piece or alternatively a plurality smaller cast pieces linked together to form a floor surface. The floor is arranged in the form of a grid.