Rotatable Formwork Tie Locking Elements for Wall Thickness Control
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Solution Overview
Problem
Existing formwork systems fail to prevent internal and external formwork elements from moving towards each other during concrete pouring, resulting in inconsistent wall thickness in the final concrete structure.
Innovation Solution
Incorporating coupling elements in the locking elements of formwork ties that can transmit compressive forces, ensuring the defined spacing between internal and external formwork surfaces remains fixed, preventing movement due to concrete filling or other forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional formwork ties are used that only transmit tensile forces, then the structure is simple and easy to manufacture, but the formwork elements cannot be prevented from moving toward each other during concrete pouring, resulting in inconsistent wall thickness
Solution Approach 1:
The locking elements are designed to perform multiple functions: they transmit both tensile forces (pulling apart) and compressive forces (pushing together) between formwork elements. This multi-functionality allows a single formwork tie design to prevent formwork movement in both directions, ensuring consistent wall thickness without requiring separate tension and compression components
Solution Approach 2:
The formwork tie is divided into distinct functional components: bolt elements for insertion and tension transmission, and locking elements with coupling elements for both tension and compression transmission. This segmentation allows each component to be optimized for its specific function while working together to achieve the overall goal of preventing formwork movement
2Stability of the object's composition
If coupling elements are added to locking elements to transmit compressive forces, then the spacing between formwork surfaces is fixed in both directions, but the device complexity increases
Solution Approach 1:
The coupling elements are integrated directly into the locking elements, merging the compression transmission function with the existing tension transmission structure. This integration eliminates the need for separate compression and tension components, reducing overall device complexity while achieving bidirectional force transmission and stable formwork spacing
3Reliability
If the locking elements are designed to transmit both tensile and compressive forces, then the formwork spacing is maintained in both directions, but the manufacturing complexity increases
Solution Approach 1:
The locking elements are designed as universal components that handle both tensile and compressive loads through their coupling elements. This multi-functional design allows for standardized manufacturing processes and component production, improving reliability without proportionally increasing manufacturing complexity
Data Source
AI summary
The invention relates to a formwork system which comprises formwork elements having opposite formwork interior surfaces, which can be interlinked at a distance to one another by means of formwork ties. Said formwork ties are constituted of a bolt element and two locking elements that are configured so as to be coupled to the bolt elements in the two distal areas thereof facing away from each other and that are adapted to transmit tensile forces from the formwork elements onto the bolt element. The formwork system is characterized in that the locking elements comprise coupling elements for transmitting pressure forces from the formwork elements onto the bolt element.