Prefabricated Slab Frame With Interconnected Reinforcing Elements
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Solution Overview
Problem
Existing prefabricated structural elements for slabs tend to deform under load, requiring reinforcement that increases weight and resource usage, leading to higher static loads on building structures.
Innovation Solution
A prefabricated structural element with a frame comprising interconnected elements, support profiles, and reinforcing elements that constrain the upper and lower flanges to prevent bending, enhancing stiffness and non-deformability while reducing weight and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the frame is reinforced by using sheets with high thicknesses to increase non-deformability, then the stiffness and load-bearing capacity are improved, but the weight of the structural frame element increases
Solution Approach 1:
The frame is divided into multiple frame elements (first, second, third, fourth frame elements) that are interconnected at connection portions. Each frame element contains flanges and reinforcing elements that work together to provide structural integrity. This segmentation allows the structure to achieve high stiffness through distributed reinforcement rather than requiring uniformly thick sheets throughout, thereby reducing overall weight while maintaining non-deformability.
Solution Approach 2:
The frame elements are formed from press-formed metal sheets with specific thicknesses (e.g., 0.5-1.5mm for lower flange, 0.3-1.0mm for upper flange), and reinforcing elements are attached to these sheets. This composite construction combines the structural support capability of the press-formed sheets with the additional stiffness provided by the reinforcing elements, achieving high non-deformability without requiring the entire structure to be made from thick material, thus optimizing the weight-strength ratio.
2Strength
If the frame is reinforced by using sheets with high thicknesses to increase non-deformability, then the load-bearing capacity is improved, but the natural and economic resources employed increase
Solution Approach 1:
The frame is divided into multiple frame elements (first, second, third, fourth frame elements) that are interconnected at connection portions. Each frame element contains flanges and reinforcing elements that work together to provide structural integrity. This segmentation allows the structure to achieve high stiffness through distributed reinforcement rather than requiring uniformly thick sheets throughout, thereby reducing overall weight while maintaining non-deformability.
Solution Approach 2:
The frame elements are formed from press-formed metal sheets with specific thicknesses (e.g., 0.5-1.5mm for lower flange, 0.3-1.0mm for upper flange), and reinforcing elements are attached to these sheets. This composite construction combines the structural support capability of the press-formed sheets with the additional stiffness provided by the reinforcing elements, achieving high non-deformability without requiring the entire structure to be made from thick material, thus optimizing the weight-strength ratio.
3Stability of the object's composition
If the frame is reinforced by using sheets with high thicknesses to increase non-deformability, then the stiffness is improved, but the weight of the structural frame element increases
Solution Approach 1:
The frame is divided into multiple frame elements (first, second, third, fourth frame elements) that are interconnected at connection portions. Each frame element contains flanges and reinforcing elements that work together to provide structural integrity. This segmentation allows the structure to achieve high stiffness through distributed reinforcement rather than requiring uniformly thick sheets throughout, thereby reducing overall weight while maintaining non-deformability.
Solution Approach 2:
The frame elements are formed from press-formed metal sheets with specific thicknesses (e.g., 0.5-1.5mm for lower flange, 0.3-1.0mm for upper flange), and reinforcing elements are attached to these sheets. This composite construction combines the structural support capability of the press-formed sheets with the additional stiffness provided by the reinforcing elements, achieving high non-deformability without requiring the entire structure to be made from thick material, thus optimizing the weight-strength ratio.
4Weight of moving object
If the weight of the structural frame element is reduced, then the static load on the load-bearing structure is minimized, but the non-deformability and stiffness may be compromised
Solution Approach 1:
The frame is divided into multiple frame elements (first, second, third, fourth frame elements) that are interconnected at connection portions. Each frame element contains flanges and reinforcing elements that work together to provide structural integrity. This segmentation allows the structure to achieve high stiffness through distributed reinforcement rather than requiring uniformly thick sheets throughout, thereby reducing overall weight while maintaining non-deformability.
Solution Approach 2:
The frame elements are formed from press-formed metal sheets with specific thicknesses (e.g., 0.5-1.5mm for lower flange, 0.3-1.0mm for upper flange), and reinforcing elements are attached to these sheets. This composite construction combines the structural support capability of the press-formed sheets with the additional stiffness provided by the reinforcing elements, achieving high non-deformability without requiring the entire structure to be made from thick material, thus optimizing the weight-strength ratio.
Data Source
Figure 1
Figure 2
Figure 3a~3d
AI summary
The present invention relates to a prefabricated structural element (1), for the construction of a slab (100) of a building construction, comprising: - a frame (2) peripherally delimiting the prefabricated structural element (1), defining a seat (3) inside it, and made of a plurality of frame elements (4a, 4b, 4c, 4d) connected to each other at respective connection portions (40a, 40b, 40c, 40d), each frame element (4a, 4b, 4c, 4d) extends along a longitudinal direction (L1-L1, L2-L2, L3-L3, L4-L4) between the respective connection portions (40a, 40b, 40c, 40d) and along a transversal direction (T1-T1, T2-T2, T3-T3, T4-T4) directed transversal to the longitudinal direction (L1-L1, L2-L2, L3-L3, L4-L4), each frame element (4a, 4b, 4c, 4d) comprises: - a lower flange (41a, 41b, 41c, 41d) projecting into the seat (3) along the transverse direction (T1-T1, T2-T2, T3-T3, T4-T4), - an upper flange (42a, 42b, 42c, 42d) projecting into the seat (3) along the transverse direction (T1-T1, T2-T2, T3-T3, T4-T4) and lying in an upper plane (PS), - two or more support profiles (5) configured to support at least one layer (101) of the slab (100) and fixed to the lower flange (41a, 41b, 41c, 41d) of at least one of the frame elements (4a, 4b, 4c, 4d). A characteristic of the present invention is that each frame element (4a, 4b, 4c, 4d) comprises at least one reinforcing element (6a, 6b, 6c, 6d) attached to the upper flange (42a, 42b, 42c, 42d) in such a way as to project outwardly from the upper plane (PS) and extending along the respective transverse direction (T1-T1, T2-T2, T3-T3, T4-T4) towards the cavity (3) to link the upper flange (42a, 42b, 42c, 42d) to the lower flange (41a, 41b, 41c, 41d). [Figure Sa]