Double-Wall Butt Reinforcement Spring-Loaded Stirrup
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Solution Overview
Problem
Existing methods for reinforcing vertical butt joints in double walls are cumbersome and prone to assembly issues due to the need for manual handling at heights and potential interference from incorrectly installed spacers, which can block the unfolding of swivel brackets, requiring additional steps and precise alignment.
Innovation Solution
A double-wall butt reinforcement system featuring brackets with rotationally fixed connections to crossbars, utilizing spring forces to maintain a rest position at a right angle or parallel to the rod-shaped components, allowing for easy pivoting and avoiding obstacles like spacers, with torsion or spiral springs providing up to 80 degrees of rotation to facilitate assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stirrup cages are assembled manually at height on-site, then the vertical butt joints can be reinforced, but workers face safety risks and require costly scaffolding or assembly towers
Solution Approach 1:
The stirrup cage is pre-assembled in the concrete plant before wall panel production, eliminating the need for on-site assembly at height. The complete cage is integrated into the wall panel structure during manufacturing, so it is already in position and ready for concrete pouring when the wall is erected on-site.
Solution Approach 2:
The manual assembly process at height is replaced by automated integration during concrete plant operations. The stirrup cage becomes part of the precast wall panel structure, substituting manual construction activities with industrial manufacturing processes that occur at ground level.
2Manufacturing precision
If spacers are installed in the wall panels at the concrete plant, then wall panel spacing is controlled, but they can become detached or incorrectly installed and block the insertion of stirrup cages
Solution Approach 1:
The stirrup cage and wall panel structure are merged into a single integrated component. The cage is embedded within the concrete matrix during panel manufacturing, eliminating the need for separate spacers that could interfere with assembly. The structural reinforcement and spacing functions are combined in one element.
Solution Approach 2:
The stirrup cage is pre-positioned and secured within the wall panel structure during concrete plant manufacturing, before the panel is transported to the construction site. This preliminary placement ensures the cage will not be obstructed by spacers or other elements during on-site assembly.
3Adaptability or versatility
If swivel brackets are used to connect double walls, then the walls can be joined, but additional mechanisms are needed to hold brackets in position and precise alignment is required
Solution Approach 1:
The complex swivel bracket positioning mechanisms are extracted and eliminated. Instead of using brackets that require holding mechanisms and precise alignment, the invention uses the pre-integrated stirrup cage that naturally provides the connection function through its fixed position within the concrete structure.
Solution Approach 2:
The stirrup cage provides its own positioning and alignment functions through its integrated design within the wall panel. The cage's geometry and reinforcement structure inherently guide and secure the connection between walls, eliminating the need for external positioning mechanisms or complex alignment procedures.
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 system simplifies the assembly process by eliminating the need for additional mechanisms to hold brackets in position and allows for easier navigation of obstacles, ensuring proper alignment and secure connection of double walls without requiring precise manual handling or additional steps.
Implementation Method 1
a spring arranged between the stirrup and the rod-shaped component, in particular the profile bar, by means of which a spring force acts on the stirrup in the basic position
Data Source
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AI summary
A double-wall butt reinforcement (D1, D2) comprising at least one stirrup (1) with two stirrup legs (11), (12) is proposed, wherein the stirrup legs (11), (12) are connected to a transverse bar (6) and the transverse bar (6) has two ends (61), (62). The two ends (61), (62) engage in opposing profile bars (2, 3) extending perpendicular to the transverse bar (6, 6'). The stirrup legs (11), (12) are fixed to the transverse bar (6, 6') to prevent rotation, and the at least one stirrup (1) is held in a rest position at a right angle or parallel to the profile bars (2, 3) by means of a spring force.