Frame Formwork Corner Connection for Simpler High-Load Welding
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Solution Overview
Problem
Existing support structures for frame formwork panels with welded oblique struts are complex to produce and limit their universal application, as they require intricate welding processes to transmit large forces effectively.
Innovation Solution
A support structure featuring corner connecting pieces welded to longitudinal and transverse edge girders, allowing for a stable and efficient connection that can be produced simply and efficiently, with options for plug welds and recess welds, and including positioning lugs for formwork props, enabling versatile use in concrete pouring and other applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If oblique struts are welded in at the corner regions, then large forces can be transmitted, but the production process becomes complex and universal applicability is reduced
Solution Approach 1:
The corner connecting piece is divided into two separate components: a first connecting piece welded to one edge girder and a second connecting piece welded to the other edge girder. This segmentation simplifies the welding process by eliminating the need for complex oblique strut assemblies, while still achieving the required force transmission capability through the distributed connection geometry.
Solution Approach 2:
The corner connecting piece design with flanges and positioning lugs creates a universal connection solution that can be applied to various edge girder configurations and formwork applications. The standardized connecting piece geometry allows for consistent welding procedures across different corner regions and maintains applicability across multiple formwork panel types and support scenarios.
2Ease of manufacture
If corner connecting pieces are welded to edge girder flanges, then production is simplified, but connection stability must be maintained
Solution Approach 1:
The edge girders are provided with pre-formed flanges that extend from the rear side toward the center region, creating ready-to-weld surfaces before the corner connecting pieces are attached. The flanges include pre-positioned recesses or holes that guide the welding process, ensuring consistent and stable connections while simplifying the manufacturing sequence.
Solution Approach 2:
The flange acts as an intermediary element between the edge girder and the corner connecting piece. The flange provides a stable, pre-positioned welding surface that mediates the connection, distributing forces effectively while allowing for simplified welding procedures from the rear side of the support structure.
3Ease of operation
If positioning pieces are added to edge girders, then formwork prop attachment is improved, but structural complexity increases
Solution Approach 1:
The positioning piece is merged with the edge girder structure by welding it directly to the flange, creating an integrated assembly. This combination provides both the structural integrity of the edge girder and the functional benefit of improved formwork prop attachment, without requiring separate, additional components that would increase overall structural complexity.
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 provides a stable and efficient corner connection that simplifies production and enhances the support structure's versatility, allowing it to handle large forces and be used in various applications such as concrete pouring and earth slope stabilization, while maintaining a straightforward production process.
Implementation Method 1
a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions
Data Source
AI summary
A support structure for a frame formwork panel including a support structure and a formwork skin connected to the support structure, the support structure having two longitudinal edge girders and two transverse edge girders, wherein a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions of the support structure where a longitudinal edge girder and a transverse edge girder come together.