Prefabricated Panel Seismic Energy Dissipation
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Solution Overview
Problem
Conventional prefabricated panels with reinforced concrete slabs are excessively heavy and costly due to thickness requirements for seismic safety, and they lack effective seismic energy dissipation, leading to potential breakage under seismic forces.
Innovation Solution
A panel design featuring a metal frame with a reinforced concrete slab, embedded structural reinforcement elements, and an elastic layer between the frame and slab to dissipate seismic energy, allowing for reduced slab thickness while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reinforced concrete slab thickness is increased to meet seismic safety criteria (1/20th of panel height), then the panel achieves sufficient structural strength and seismic resistance, but the panel weight and manufacturing costs increase significantly
Solution Approach 1:
The patent employs a composite structure combining a metal frame (steel or aluminum profiles) with a reinforced concrete slab of reduced thickness. The metal frame provides structural strength and seismic resistance, while the thinner concrete slab (5-10cm instead of 15cm) reduces weight. This composite approach allows the panel to meet seismic safety criteria without requiring excessive concrete thickness, thereby reducing panel weight and associated costs.
2Strength
If the reinforced concrete slab thickness is increased to meet seismic safety criteria, then the panel achieves sufficient structural strength, but the manufacturing costs and transportation costs increase due to material quantity and space occupation
Solution Approach 1:
The patent uses a composite system where a metal frame (made of steel or aluminum profiles with specific geometric shapes) works together with a thinner reinforced concrete slab. The metal frame bears the primary structural load and provides seismic resistance, enabling the concrete slab to be thinner (5-10cm) than conventional panels (15cm). This reduces the quantity of concrete and reinforcement needed, lowering manufacturing costs while maintaining required strength.
Solution Approach 2:
The patent changes the material parameters by substituting part of the concrete structure with metal profiles having optimized geometric shapes (I-beams, channels, angles). This parameter change in material composition and structural configuration allows the concrete slab thickness to be reduced from 15cm to 5-10cm, thereby reducing material quantities and manufacturing costs while preserving structural strength through the metal frame's load-bearing capacity.
3Reliability
If a conventional reinforced concrete panel structure is used, then the panel meets basic structural requirements, but it lacks effective seismic energy dissipation capability and may experience breakage under seismic forces
Solution Approach 1:
The patent creates a composite panel system where the metal frame and reduced-thickness concrete slab work synergistically. The metal frame's ductility and energy-absorbing characteristics provide seismic energy dissipation, while the reinforced concrete slab maintains structural integrity. This combination enables the panel to withstand seismic forces without breakage, overcoming the limitation of conventional concrete panels that lack effective energy dissipation mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The panel achieves enhanced resistance to seismic events and static loads, reducing material costs and weight while meeting seismic safety criteria with a thinner slab, ensuring reliability and cost-effectiveness.
Implementation Method 1
an elastic layer (30) made of a material adapted to dissipate any seismic energy originating from the deformation of the reinforcement and support elements (13)
Data Source
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Figure 5
AI summary
A panel (10) for prefabricated buildings, which comprises: - a metal frame (11), - a reinforced concrete slab (12), the slab (12) being within the frame (11), - a plurality of structural reinforcement and support elements (13), each of the structural reinforcement and support elements (13) extending from one side of the frame (11) toward the opposite side, the structural reinforcement and support elements (13) being embedded in the reinforced concrete slab (12); the panel (10) comprises a layer/seal (30) interposed between the frame (11) and the slab (12).