Bent Wire Brackets for Masonry Wall Lifting
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Solution Overview
Problem
Existing methods for lifting and placing prefabricated masonry wall sections are inadequate as they often require full underside support, leading to instability and increased construction time and cost, especially when used in high buildings with free-hanging dams that do not meet constructional and safety requirements.
Innovation Solution
A bracket system with a bent steel wire design that transfers downward forces from masonry bricks to upper elements, providing both compressive and tensile strength by fitting into joints between bricks, allowing for secure lifting and placement without full underside support, and enabling faster and cheaper installation of prefabricated wall parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mortar coupling is used to interconnect masonry stones, then the wall structure is simple and easy to manufacture, but the tensile strength and stability are insufficient for free-hanging dams
Solution Approach 1:
The invention combines mortar coupling with metal brackets to create a composite connection system. The brackets provide tensile strength while mortar maintains structural simplicity, resolving the contradiction between ease of manufacture and tensile strength for free-hanging dams.
Solution Approach 2:
Metal brackets are introduced as intermediary elements between masonry stones to provide the missing tensile strength. These brackets act as mediators that transfer and distribute forces, enabling free-hanging dam construction without compromising structural integrity.
2Strength
If elongate reinforcement elements are provided in joints, then compressive strength is improved, but tensile strength remains insufficient and full underside support is required
Solution Approach 1:
The invention extracts the tensile strength function from the joint reinforcement system by introducing separate bracket elements. This allows elongate elements to focus on compressive strength while brackets handle tensile forces, eliminating the need for full underside support during lifting.
Solution Approach 2:
The reinforcement system is segmented into distinct functional components: elongate elements for compressive strength and bracket elements for tensile strength. This segmentation allows each component to optimize its specific function without requiring full underside support.
3Productivity
If prefabricated wall sections are lifted and placed without full underside support, then construction time and cost are reduced, but stability and security are compromised
Solution Approach 1:
Bracket elements with receivers are pre-installed in joints before wall sections are lifted. This preliminary action creates secure attachment points that enable safe lifting and placement without full underside support, resolving the contradiction between construction speed and stability.
Solution Approach 2:
Bracket-receiver pairs act as intermediary connection systems between lifting equipment and prefabricated wall sections. These intermediaries provide the necessary stability and security for handling large wall sections without requiring support across the entire underside.
Data Source
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Figure 5~7
Figure 6
AI summary
A device (1) for coupling building elements together, comprising an extending element having a first leg (5) in a first direction and a second leg (6) oriented at an angle of substantially 90° with respect to the first leg, and wherein at least one of the two legs comprises a receiver (7) adapted to receive a leg of a similar device. A method for manufacturing an assembly of building elements using this device, comprising the steps of: placing a first leg of a first device in a joint between a first building element and a second building element placed on the first building element, wherein the second leg, in particular the receiver of the second leg, of the first device extends to the height of a joint between the second building element and a third building element placed on the second building element, and placing a first leg of a second device in the receiver of the second leg of the first device and in the joint between the second and the third building element and wherein the second leg, in particular the receiver of the second leg, of the second device extends to the height of a joint between the third building element and a fourth building element placed on the third building element.