Varying Cross-Section Beam Reinforcer for Flexural Strength
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Solution Overview
Problem
Conventional methods for reinforcing beams with through holes, such as using plate-like or ring-shaped members, either require larger sizes to maintain flexural strength, lead to excessive reinforcement and weight increase, or are difficult to install due to constant thickness and size constraints, especially when the hole is eccentrically positioned.
Innovation Solution
A beam reinforcing metallic material with a varying cross-sectional shape, where the center part has a larger cross-sectional area than the end parts, featuring a bent or curved welding surface, a counter-flange-part surface, and optional protrusions and angle varying sections for easy installation and welding, allowing efficient reinforcement of the beam while minimizing weight and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a plate-like member with constant thickness is used to reinforce the beam, then the flexural strength can be maintained, but the weight and cost increase due to excessive reinforcement
Solution Approach 1:
The beam reinforcing metallic material employs varying thickness along its longitudinal direction, with the center part having greater thickness than the end parts. This local quality variation concentrates reinforcement material where it is most needed (at the center to maintain flexural strength) while reducing material usage at less critical areas, thereby maintaining strength while minimizing weight and cost.
2Strength
If a plate-like member with constant thickness is used to reinforce the beam, then the flexural strength can be maintained, but the installation area increases
Solution Approach 1:
The varying thickness design allows the reinforcing member to achieve sufficient flexural strength with a more compact footprint. The center part's greater thickness provides the necessary strength reinforcement locally, eliminating the need for a larger overall installation area that would be required by a uniform thickness design.
3Strength
If a ring-shaped beam reinforcing member is used to reinforce the beam, then the through hole can be filled, but the through hole must be enlarged which reduces structural integrity
Solution Approach 1:
The beam reinforcing metallic material uses a varying thickness profile where the center part is thicker than the end parts. This allows the member to be installed in the existing through hole without requiring enlargement, while the concentrated thickness at the center provides sufficient reinforcement to maintain both flexural strength and structural integrity.
4Strength
If a plate-like member is used to reinforce the beam, then reinforcement can be achieved, but welding complexity increases due to multiple sides requiring welding
Solution Approach 1:
The varying thickness design of the beam reinforcing metallic material simplifies the welding process. The member requires welding only at specific locations where the thickness is appropriate for welding access, rather than requiring welding around the entire perimeter like a uniform thickness plate would require. This reduces welding complexity while maintaining reinforcement effectiveness.
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
This solution efficiently reinforces beams by concentrating strength where needed, reducing weight and cost, facilitating easier welding and installation, and preventing misplacement during installation, while allowing for smaller installation areas and avoiding unnecessary hole enlargement.
Implementation Method 1
a welding surface that is welded to the web
Data Source
AI summary
A beam reinforcing metallic material includes a welding surface, a counter-flange-part surface, a contacting surface, a protrusion, and the like. The beam reinforcing material is a member that is made of metal such as steel for example. The beam reinforcing metallic material is not plate shaped but has a three dimensional shape. More particularly, the cross-sectional shape varies from the edge parts toward the center part in longitudinal direction. The cross section (cross-sectional area) of the center part of the beam reinforcing metallic material in longitudinal direction is larger than the cross sections (cross-sectional areas) of the both end parts. Increasing the cross-sectional area of the vicinity of the center part of the beam reinforcing metallic material allows the part that receives maximum stress to securely obtain the flexural strength when the beam reinforcing metallic material is fixed to the beam.