Formwork Support Hollow Profile Web Stiffened by Internal Framework
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Solution Overview
Problem
Conventional formwork supports have limited weather resistance, dimensional stability, and load-handling capacity, requiring excessive numbers for demanding construction tasks, which is time, labor, and cost intensive.
Innovation Solution
A formwork support with upper and lower flanges connected via a hollow profile web stiffened by internal framework struts, increasing transverse shear stiffness and load-bearing capacity while maintaining cost-effectiveness and ease of handling, using materials like metal or plastics extrusion profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the web is made of solid wood or wood materials, then the load-handling capacity is improved, but the weather resistance and dimensional stability deteriorate due to water absorption causing swelling and shrinking
Solution Approach 1:
The web is segmented into a framework structure with multiple struts arranged in triangular patterns, replacing solid wood with a lattice of metal or plastic elements. This segmentation provides both strength through geometric stability and resistance to environmental degradation by eliminating continuous material that absorbs water.
Solution Approach 2:
The framework uses composite construction combining metal or plastic struts with connection nodes, creating a material system that leverages the advantages of different materials - the durability and weather resistance of synthetic materials combined with the structural strength of metal components.
2Reliability
If the web is designed as a simple extruded hollow profile made of aluminum, then the weather resistance and service life are improved, but the load-handling capacity deteriorates
Solution Approach 1:
The hollow profile is segmented into a framework of struts arranged in triangular configurations, transforming a simple tubular structure into a complex lattice that provides significantly enhanced load-handling capacity while retaining the weather resistance of the base material.
Solution Approach 2:
The structure transitions from a two-dimensional hollow tube to a three-dimensional framework with multiple struts extending in various directions, adding structural complexity and load-bearing capacity in multiple spatial dimensions while maintaining the external hollow profile shape.
3Strength
If more formwork supports are used to increase load-handling capacity, then the load-bearing capability is improved, but the time, labor and cost increase
Solution Approach 1:
The web structure parameters are changed from simple hollow profiles to complex frameworks with specific strut arrangements, increasing the load-bearing capability of each individual support element and thereby reducing the total number of supports needed for a given construction task.
Data Source
AI summary
A formwork support for supporting concrete formworks in the construction sector, comprising an upper flange and a lower flange, which are connected to one another via a hollow profile web such that they are at an invariant distance in relation to one another, wherein the hollow profile web is stiffened inside by framework struts.