Formwork Alignment Measurement to Prevent Concrete Entrapment
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Solution Overview
Problem
The removal of formwork elements from concrete is challenging due to their entrapment during concreting, especially when not correctly positioned against the trench wall or on rough terrain, leading to increased building time.
Innovation Solution
A formwork device equipped with a measuring device to determine deviations from a vertical plane, allowing real-time correction of positioning to prevent interstice formation and facilitate removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the formwork element is placed against the trench wall without positioning measurement, then the placement operation is simple and quick, but the alignment accuracy deteriorates causing the formwork to be caught in concrete
Solution Approach 1:
The patent replaces manual visual positioning with an optical measurement system (laser theodolite and prism) to achieve precise alignment. The theodolite measures angular deviations from the vertical plane, providing quantitative data for positioning adjustment, thereby substituting subjective mechanical alignment with objective optical measurement.
Solution Approach 2:
The patent implements a feedback mechanism where the measured deviation angle is continuously monitored and used to adjust the formwork element position. The measurement results are fed back to operators who adjust the positioning until the deviation is within acceptable tolerance, creating a closed-loop control system for alignment.
2Manufacturing precision
If the formwork element is removed from the trench, then the positioning can be corrected, but the building time increases due to additional operations
Solution Approach 1:
The patent performs positioning measurement and correction during the concreting process itself, before the concrete sets. By measuring the deviation in real-time and making adjustments while the concrete is still plastic, the need for time-consuming removal and repositioning after setting is eliminated.
Solution Approach 2:
The patent replaces the mechanical trial-and-error positioning method with optical measurement and calculated adjustment. The precise angular measurement allows operators to make accurate single-adjustment positioning, eliminating the need for repeated removal and repositioning operations.
3Reliability
If the terrain is rough causing formwork debonding, then the formwork can be removed and repositioned, but the building time increases
Solution Approach 1:
The patent measures and corrects the formwork position during the concreting process, ensuring proper alignment and stability before the concrete sets. This preliminary correction prevents debonding issues that would require later intervention, thereby maintaining both reliability and productivity.
Data Source
AI summary
The invention relates to a formwork device (10) for an end of a panel of a molded wall, said formwork device extending along a longitudinal direction (A) and comprising at least one first formwork element (20) including: a base (22) extending along the longitudinal direction (A) and having an outer face (24); a housing (28) interacting with the base and extending along the longitudinal direction; at least one measuring device (40) making it possible to determine at least one first deviation parameter (d1) representative of the deviation of the base (22) with respect to a first vertical plane (P1); and a signal-transmitting device (50) connected to the measuring device (40) to transmit the first deviation parameter (α1, d1, β) to a reception station (60) located at the surface.