Hollow-Core Slab Support Box-Type Steel Structure
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Solution Overview
Problem
Existing supports for hollow-core slabs are either excessively heavy and costly due to thick steel materials, or lightweight but time-consuming and costly to produce, and fail to accommodate variable opening widths effectively, lacking in load-bearing capacity and requiring separate installation and fire protection.
Innovation Solution
A lightweight, cost-effective support with a box-type structure made from 4-8 mm thick steel plates, featuring a horizontal support plate, back plate, end plates, brackets, and three supporting bars, allowing adjustable length and integrated concrete casting for enhanced load transfer and fire resistance without additional protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick steel plate support (10-20 mm) is used, then the load-bearing capacity is sufficient, but the weight and manufacturing cost increase significantly
Solution Approach 1:
The support is divided into multiple functional components: horizontal support plate, back plate, end plates, brackets, front plate, top plate, and supporting bars. This segmentation allows each component to be optimized for its specific function, enabling the use of thinner plates (4-8 mm) while maintaining overall structural strength through the coordinated arrangement of parts.
Solution Approach 2:
The support structure combines steel components with concrete infill to create a composite construction. The steel framework provides structural integrity and load-bearing capacity, while the concrete infill adds mass and fire resistance. This composite approach allows the use of thinner steel plates compared to solid steel supports, reducing weight while maintaining strength.
2Weight of moving object
If a lattice-structured support is used to reduce weight, then the weight decreases, but the production time and cost increase significantly
Solution Approach 1:
The support is designed as an assembly of standardized plate components that can be manufactured separately and then assembled. This segmentation enables parallel production of different components and simplifies quality control, significantly reducing production time compared to complex lattice structures while maintaining lightweight characteristics.
Solution Approach 2:
The plate thickness parameter is optimized to 4-8 mm, balancing weight reduction with manufacturing efficiency. This parameter change allows the use of standard plate sizes and thicknesses that are readily available and easy to work with during assembly, unlike custom-designed lattice structures that require specialized fabrication processes.
3Ease of manufacture
If a fixed-structure support is used, then the manufacturing is simpler, but the adaptability to variable opening widths is limited
Solution Approach 1:
The support structure incorporates adjustable elements, particularly in the positioning of brackets and supporting bars, which can be adapted to different opening widths. This dynamic capability allows the same basic structure to serve multiple opening sizes without requiring completely different designs, maintaining manufacturing simplicity while providing versatility.
Solution Approach 2:
The support is designed as a universal structure that can accommodate various opening widths through standardized components with adjustable positioning. The horizontal support plate, brackets, and supporting bars can be configured for different span requirements, making the same design applicable to multiple opening sizes and reducing the need for custom manufacturing.
4Object-affected harmful factors
If separate fire protection is added to the steel support, then the fire resistance improves, but the device complexity and installation time increase
Solution Approach 1:
The fire protection function is merged with the structural support function by using the same steel components and brackets that provide mechanical support also to provide fire resistance through proper material selection and design. The supporting bars and plate structure are designed to maintain structural integrity at elevated temperatures, eliminating the need for separate fire protection layers and reducing overall system complexity.
Data Source
Figure 1~2
Figure 3~4
AI summary
A support (1) for a hollow-core slab comprising a horizontal support plate (2) for supporting the end of the hollow-core slab, a back plate (4) extending upwards from the horizontal support plate (2), end plates (5) arranged to the ends of the support (1) for a hollow-core slab and supports (6) protruding from the ends of the support (1) for a hollow-core slab for supporting the support (1) for a hollow-core slab on the hollow-core slabs (3b). The support (1) for a hollow-core slab comprises a front plate (7) extending upwards from the support plate (2), which front plate (7) is arranged at a distance from the back plate (4), a top plate (8) adjusted between the front plate (7) and the back plate (4), which front plate (7), top plate (8), back plate (4) and support plate (2) form a box-type space (10), into which one or more supporting bars (11a, 11b, 11c) are arranged.