Travelling Formwork Jack Frame with Extendible Props
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Solution Overview
Problem
The existing methods for constructing monolithic reinforced concrete buildings are time-consuming and require excessive material and labor due to the need for concrete to reach sufficient strength before repositioning formwork, leading to increased metal consumption and prolonged construction times.
Innovation Solution
The method involves using extendible supports with motion drives on jack frames, rotationally movable shells, and removable recess-forming cages to transfer the formwork load to previously erected structures, allowing for simultaneous erection of vertical structures and reducing the time needed for concrete to achieve stripping strength, along with adjustable panels for reinforcing rods to enhance bonding and reduce material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If jack frames rest on vertical shuttering panels during concreting, then the formwork is supported, but the strength properties of panels must be increased resulting in excessive metal consumption
Solution Approach 1:
The patent extracts the load-bearing function from the vertical shuttering panels by introducing separate props that rest on the already erected vertical structures. This allows the panels to be removed from the load path, eliminating the need for excessive metal consumption while maintaining formwork support during concreting.
Solution Approach 2:
The patent introduces props as intermediary elements between the jack frames and the already erected vertical structures. These props serve as mediators that transfer the formwork load to the completed structures, eliminating the need for panels to bear excessive loads and reducing metal consumption.
2Productivity
If jack frames are relocated after concreting, then formwork can be repositioned, but time is required for concrete to attain necessary strength extending construction time
Solution Approach 1:
The patent applies preliminary action by having props ready and positioned in advance, allowing jack frames to be immediately relocated once concreting is complete. The props are pre-installed on the already erected vertical structures, so no waiting time is needed for panel removal or repositioning, thus reducing construction time while maintaining productivity.
3Stability of the object's composition
If formwork is supported on vertical shuttering panels, then structure is maintained, but power consumption for relocation increases
Solution Approach 1:
The patent extracts the support function from the vertical shuttering panels by introducing separate props. This separation allows the panels to be lightweight and easy to relocate, significantly reducing power consumption for formwork repositioning while the props maintain formwork stability during concreting operations.
Data Source
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AI summary
The present group of inventions is related to civil engineering and can be used in erection of multi-storey buildings/constructions. Technological equipment includes travelling formwork comprising lifting jacks with props enclosed in shells, where U-shaped jack frames are installed on. In the base of the jack frame posts, holders of vertical shuttering panels and extendible supports are installed moveably. In the process of work performance, formwork is laid resting upon previously erected structures by means of lifting jack props, while shells enclosing said props are driven with rotating motion. Further on, extendible supports of jack frames are installed on the newly erected structures, props of lifting jacks together with shell are extracted and concrete is poured into the formed cavities. Formwork is re-installed on the already erected structures by means of lifting jack and the cycle is repeated. Methods for erecting both single- and multilayer vertical structures, as well as methods for erecting "floor structure - single-/multilayer wall" segment of building are disclosed. Result - reduction of consumption of materials for formwork and power costs for its relocation; reduction of time for construction. 6 independent and 14 dependent claims, 15 figures.