One-Sided Self-Supporting Formwork for Foundation Walls
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Solution Overview
Problem
Conventional methods for constructing concrete foundation walls require significant additional reinforcing structures when access is limited to one side, increasing costs and potentially necessitating rework due to the high load on formwork from concrete.
Innovation Solution
A one-sided, integrated, self-supporting formwork system that includes panels, elongated vertical and horizontal members, and ties, which are configured to form a cavity with the foundation wall, allowing concrete to be poured without the need for external lateral bracing, and are designed to be used in enclosed spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional formwork is used with one-sided access, then the formwork can be assembled with limited space, but the load on the formwork increases significantly requiring additional reinforcing structures
Solution Approach 1:
The formwork system is divided into multiple panels that can be assembled in segments along the foundation wall. Each panel is independently supported by vertical members connected to the foundation wall, distributing the load rather than concentrating it on a single continuous structure. This segmentation allows the formwork to be assembled in confined spaces while maintaining structural integrity under concrete load.
Solution Approach 2:
The formwork panels are integrally connected to the foundation wall through vertical members and ties, merging the formwork structure with the foundation wall itself. This integration allows the foundation wall to provide direct support to the formwork, eliminating the need for separate external bracing structures and reducing the overall complexity of the reinforcing system.
2Strength
If additional reinforcing structures are added to support the formwork load, then the formwork strength increases, but the construction cost and complexity increase
Solution Approach 1:
The formwork system merges with the foundation wall by directly connecting panels to the wall through vertical members and ties. This integration allows the foundation wall to serve dual purposes: as the structural element being formed and as the support structure for the formwork itself, eliminating the need for separate external bracing and reducing overall system complexity.
Solution Approach 2:
The foundation wall serves its own formwork support function by providing direct attachment points for the formwork panels through its reinforcement structure. The wall's inherent structural capacity is utilized to support the formwork load, making the system self-sufficient and eliminating the need for additional external supporting structures.
3Stability of the object's composition
If angled bracing is extended from the framework into the ground, then the formwork stability improves, but the construction requires potential rework and increased cost
Solution Approach 1:
The invention extracts the bracing function from separate external angled structures and integrates it directly into the formwork panel assembly. The vertical members and ties are incorporated as integral parts of the panel system, connecting directly to the foundation wall, which eliminates the need for separate ground-extended bracing structures and simplifies the construction process.
Solution Approach 2:
The formwork panels are pre-assembled with vertical members and ties that are designed to connect directly to the foundation wall reinforcement. This preliminary configuration allows the panels to be installed quickly without requiring subsequent installation of separate bracing structures, reducing construction steps and potential rework.
Data Source
AI summary
A method for forming a foundation wall of a building structure having a building frame seated on the foundation, the method including coupling each of a plurality of elongated vertical members to a floor of the foundation and the building frame so that each of the vertical members extend between the floor and the building frame adjacent to an existing foundation wall, providing at least one elongated horizontal member through apertures of the vertical members such that the horizontal member extends between and passes through respective ones of the vertical members, coupling panels to the horizontal member so as to form, with the vertical members and the horizontal member an integrated self-supporting formwork which, with the existing foundation wall forms a cavity, having disposed therein, the vertical members and the horizontal member, and flowing concrete into the cavity so as to fill the cavity around the vertical members and horizontal member disposed within the cavity.