Segmented Corbel with Bolted Joint and Reinforcement Anchoring
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Solution Overview
Problem
Existing structural support systems for concrete elements, such as those involving precast concrete beams on concrete piles, lack robustness and are prone to disproportionate collapse.
Innovation Solution
A corbel system with a first support part cast into a concrete structural element and a second support part fastened by bolts, featuring reinforcement rods that extend into the concrete, providing enhanced anchoring and tensile reinforcement to prevent disproportionate collapse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple bracket fastened to a concrete pile is used to support a structural element, then the device complexity is low, but the reliability and robustness are insufficient, leading to potential disproportionate collapse
Solution Approach 1:
The corbel is divided into two distinct support parts: a first support part cast into the concrete pile and a second support part fastened to the first support part. This segmentation allows each part to perform its specific function optimally while maintaining overall system robustness without excessive complexity.
Solution Approach 2:
The corbel combines different materials and connection methods: concrete (first support part), steel (second support part and reinforcement rods), and mechanical fastening (bolts). This composite approach creates a more robust connection system that prevents disproportionate collapse while maintaining reasonable device complexity.
2Strength
If reinforcement rods are attached to extend into the first structural element, then the strength and anchoring capability are improved, but the ease of manufacture decreases
Solution Approach 1:
The reinforcement rods are attached to the second support part before the first structural element is placed. This preliminary action allows the rods to be positioned and prepared in advance, improving strength and anchoring capability while maintaining ease of manufacture by sequencing operations logically.
3Adaptability or versatility
If the second support part is fastened by bolts to allow position adjustment, then the adaptability is improved, but the strength of the connection may be reduced
Solution Approach 1:
The connection system is segmented into the bolted joint between support parts and the reinforcement rod anchorage into the structural element. This segmentation allows the bolted portion to provide adjustability while the reinforcement rods provide the necessary strength, resolving the contradiction between adaptability and strength.
Solution Approach 2:
The connection combines mechanical fastening (bolts for adjustability) with reinforcement rod anchorage (for strength). This composite connection system achieves both adaptability through bolt positioning and strength through the reinforcement rods extending into the concrete.
Data Source
Figure 1~2
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Figure 5~6
AI summary
Presented is a corbel (1) for supporting a first structural element (2) at a second structural element (3) and a method and an arrangement. The corbel (1) comprises a first support part (4) configured to be cast into second structural element (3), and a second support part (5) that is fastened by bolts (6) to the first support part (4) and on which second support part (5) the first structural element (2) is configured to be supported. Reinforcement rods (9) are attached to the first support part (4) and extend from the first support part (4) on opposite sides of the second support part (5) beyond the second support part (5) so that the reinforcement rods (9) are configured to extend into concrete of the first structural element (2).