Beam Reinforcing Structure with Varying Cross-Section
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Solution Overview
Problem
Conventional beam reinforcing structures using ring-shaped metallic materials require large sizes to maintain flexural strength, leading to increased weight and welding complexity, which complicates handling and installation.
Innovation Solution
A beam reinforcing structure comprising a ring-shaped metallic material fixed around a through hole with a pair of block-shaped materials on the beam's flange parts, featuring a varying cross-sectional shape with a larger center area, bent welding surface, and directional markers for easy installation and reduced welding requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large-sized ring-shaped beam reinforcing metallic material is used to maintain flexural strength, then the flexural strength is improved, but the weight increases and handling properties deteriorate
Solution Approach 1:
The beam reinforcing metallic material is divided into multiple segments: a ring-shaped portion (first beam reinforcing metallic material) fixed around the through hole, and block-shaped portions (second beam reinforcing metallic materials) fixed on the flange parts. This segmentation allows each component to be smaller and lighter while collectively providing the required flexural strength.
Solution Approach 2:
The beam reinforcing metallic material has a varying cross-sectional shape where the center part has a larger cross-section than the end parts. This local quality variation concentrates reinforcement where it is most needed (at the center) while reducing material usage and weight at the ends where less reinforcement is required.
2Strength
If a large-sized ring-shaped beam reinforcing metallic material is used to maintain flexural strength, then the flexural strength is improved, but the amount of welding increases and work-hours increase
Solution Approach 1:
Dividing the reinforcing structure into a ring-shaped portion and separate block-shaped portions reduces the continuous welding length required compared to a single large ring. The block portions can be welded at discrete locations on the flange parts, reducing total welding amount.
Solution Approach 2:
The varying cross-sectional shape with larger center and smaller ends optimizes the distribution of welding requirements, concentrating reinforcement where most needed while minimizing welding at the ends.
3Ease of manufacture
If a beam reinforcing metallic material with uniform cross-section is used, then manufacturing is simplified, but reinforcement efficiency decreases
Solution Approach 1:
The beam reinforcing metallic material features a varying cross-sectional shape where the center part has a larger cross-section than the end parts. This local quality variation concentrates reinforcement where it is most needed (at the center) while reducing material usage at the ends where less reinforcement is required, thereby improving reinforcement efficiency.
4Strength
If the cross-sectional area of the beam reinforcing metallic material is increased, then flexural strength is improved, but the installation area increases and installation in constrained spaces becomes difficult
Solution Approach 1:
The varying cross-sectional shape concentrates the larger cross-sectional area at the center part where flexural strength is most critical, while the end parts have smaller cross-sections. This allows the reinforcement to be effective in the critical zone without requiring a uniformly large installation area throughout the entire length.
Data Source
AI summary
A beam is an H-shaped steel having flange parts above and under a web part. A through hole is formed on web part to let pipes and the like pass through. A ring beam reinforcing metallic material is disposed through hole. A beam reinforcing metallic material is disposed along the upper and lower flange parts at positions away from the through hole. The beam reinforcing metallic material on the front surface of the web part (opposite side of a flange of the ring beam reinforcing metallic material). The beam reinforcing metallic material in a direction in which a counter-flange surface of the beam reinforcing metallic material faces the flange part. A contacting surface is in contact with web part and is fixed to the web part with a welded section. At this time, the welded section is formed up to the height to which an angle varying part is covered.