Formwork Bracing Anchoring System for Concrete Deflection Control
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Solution Overview
Problem
Conventional formwork systems for concrete structures experience movement and deflection due to the weight of concrete, leading to incorrect structure formation, as existing anchoring solutions like road pins do not adequately prevent upward force and deflection.
Innovation Solution
A formwork system featuring clamping brackets with adjustable clamping members and braces that allow for secure pin insertion, distributing the load effectively between clamping brackets and the base, preventing movement and deflection by transferring pressure directly to the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional road pins are used to anchor the formwork, then the formwork can be secured to the ground, but excessive deflection occurs in the shuttering contact member and the base is forced upwards by concrete pressure
Solution Approach 1:
The formwork system is divided into distinct functional components: a base for ground contact, clamping brackets for pin engagement, and a shuttering contact member for concrete support. This segmentation allows each component to be optimized for its specific function, with the base providing stable anchoring and the clamping brackets providing precise positioning.
Solution Approach 2:
Clamping brackets act as intermediary elements between the road pins and the shuttering contact member. These brackets engage with the pins to define a clamping portion, preventing direct upward force transmission to the shuttering contact member while maintaining secure anchoring.
2Ease of manufacture
If the formwork is anchored using simple brackets with road pins, then installation is simple, but the base moves upward under concrete pressure causing whole formwork movement
Solution Approach 1:
The clamping brackets extend over openings in the base, creating a three-dimensional clamping structure. This dimensional approach allows the brackets to engage with pins from multiple directions, preventing upward movement while maintaining structural simplicity.
Solution Approach 2:
The clamping brackets are pre-configured to counteract upward forces before they can cause movement. The brackets engage with the pins to create a clamping portion that resists the upward pressure generated during concrete pouring.
3Device complexity
If the shuttering contact member is directly connected to the base, then the structure is simple, but deflection occurs under concrete weight
Solution Approach 1:
Clamping brackets serve as intermediary components between the base and shuttering contact member, providing structural support and preventing deflection while maintaining overall system simplicity.
Solution Approach 2:
The clamping brackets combine multiple functions: anchoring engagement, structural support, and positioning control. By merging these functions into a single component, the overall structure remains simple while achieving high precision.
Data Source
AI summary
Disclosed herein is a concrete formwork suitable for use in shuttering formwork. The formwork comprises a base and a plurality of clamping brackets. The clamping brackets further comprise clamping members that are engageable with the clamping brackets to define clamping portion that are aligned with openings on the base. The base is pivotally connected to a shuttering contact member which is supported by two braces. Also disclosed herein is a method of constructing the disclosed formwork.