Formwork Support Cantilever Beam Stability
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Solution Overview
Problem
Existing formwork support systems lack sufficient safety and stability, particularly at the marginal areas of a building under construction, where workers are at risk of accidents during shuttering and stripping processes.
Innovation Solution
A formwork support system comprising a pair of support props, a longitudinal beam, and a cantilever beam, where the cantilever beam extends transversely and is secured to the longitudinal beam, preventing lifting under vertical loads, with a protruding section providing a walk-on area and enhanced safety features like fall protection devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional formwork support system is used at marginal areas, then the structure can support formwork, but safety and stability are insufficient, creating risk of accidents during shuttering and stripping
Solution Approach 1:
The formwork support system is divided into modular components including support props, longitudinal beams, transverse beams, and cantilever beams with protruding sections. This segmentation allows flexible assembly at marginal areas while maintaining structural integrity and safety through properly designed connection points and support distributions.
Solution Approach 2:
The invention introduces cantilever beams with protruding sections that extend beyond the vertical plane of the support props, creating a third-dimensional workspace platform. This dimensional extension provides workers with a safe working area at marginal locations while maintaining structural stability through the beam's connection to the longitudinal beam and support from the longitudinal support.
2Productivity
If workers need access to marginal areas for shuttering and stripping operations, then productivity improves, but safety risks increase due to lack of walk-on areas
Solution Approach 1:
The cantilever beam's protruding section creates an elevated walk-on platform that extends into the workspace area, providing workers with safe access to marginal regions for formwork installation and removal operations without requiring ground-level access that would compromise structural stability.
Solution Approach 2:
The cantilever beam acts as an intermediary structure between the vertical support system and the horizontal formwork sheets, providing a stable intermediate platform for worker access and material placement while maintaining the integrity of both the support structure and formwork system.
3Area of stationary object
If the cantilever beam is designed to extend beyond the support props, then walk-on area is provided, but the beam may detach under load
Solution Approach 1:
The longitudinal support positioned beneath the cantilever beam's main section provides counterbalancing support that offsets the moment created by loads on the protruding section, preventing the beam from detaching or rotating upward at its connection point with the longitudinal beam.
Solution Approach 2:
The connection between the cantilever beam and longitudinal beam is designed with predetermined geometric constraints and locking features that prevent upward movement before loads are applied, ensuring the beam remains securely attached during the entire loading process during formwork operations.
Data Source
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AI summary
A formwork support system comprising: - a first pair of support props, - a second pair of support props, - a longitudinal beam with opposite ends attached to the first pair of support props, - a longitudinal support with opposite ends attached to the second pair of support props, - a cantilever beam extending transversely to the longitudinal beam and the longitudinal support, respectively, the cantilever beam being supported on an upper side of the longitudinal support, the cantilever beam having a first end secured to the longitudinal beam.