Bearing Structural Member With Threshold-Limited Load Transfer
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Solution Overview
Problem
Existing deformable solid structures used as bearing members in engineering applications fail to maintain a consistent maximum load transmission to supporting structures, leading to instability and potential damage under varying external loads, as they either undergo excessive deformation or breakage due to elastic and plastic deformation stages.
Innovation Solution
A bearing structural member design that maintains a constant counterforce equal to its designed threshold value under external loads exceeding the threshold, incorporating a sizing section for load bearing, a reducing section for deformation, and an assembling section for concentrated deformation, allowing for stable deformation and load release, thereby preventing structural damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a common deformable solid structure is used as a bearing structural member, then the structure can undergo elastic and plastic deformation under external load, but the acting force transmitted to the bottom supporting structure continuously fluctuates and cannot maintain a stable threshold value
Solution Approach 1:
The bearing structural member is divided into three distinct sections: a sizing section for load bearing, a reducing section for deformation, and an assembling section for concentrated deformation. This segmentation allows each section to perform its specific function, with the reducing section specifically designed to undergo controlled deformation that maintains stable force transmission at the designed threshold value.
Solution Approach 2:
Different sections of the bearing structural member are given different structural properties: the sizing section has sufficient cross-sectional area for load bearing, the reducing section has reduced cross-sectional area for controlled deformation, and the assembling section is designed for concentrated deformation. This local differentiation of structural properties enables the member to maintain stable force transmission while accommodating deformation requirements.
2Force
If the bearing structural member undergoes elastic and plastic deformation, then the member can absorb external load, but the transmitted force continuously changes and cannot equal the designed threshold value
Solution Approach 1:
The cross-sectional area of the bearing structural member is varied along its length, with the reducing section having a smaller cross-sectional area than the sizing section. This parameter change in geometry creates a controlled stress concentration zone that ensures the member yields at the designed threshold value, maintaining precise force control during deformation.
3Strength
If the bearing structural member is designed to provide maximum counterforce equal to the designed threshold value, then the member can protect the supporting structure, but the member itself must undergo deformation
Solution Approach 1:
The bearing structural member acts as an intermediary between the external load and the bottom supporting structure. By designing the reducing section with smaller cross-sectional area, the member intentionally deforms in this section to maintain the transmitted force at the designed threshold value, protecting the supporting structure while absorbing excess energy through controlled deformation.
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 design effectively suppresses deformation under normal loads and provides a stable counterforce by transitioning to a cutting deformation state when loads exceed the threshold, protecting the supporting carrier from damage and ensuring structural integrity in applications like bridges and building structures.
Implementation Method 1
the elastic deformation is that when an external force is less than a certain limit value (which is generally called an elastic ultimate load), and after the external force causing the deformation is released, the solid may completely recover its original shape
Implementation Method 2
The plastic deformation is that once the external force exceeds the elastic ultimate load, and then is released, the solid may not recover the original shape, and part of non-disappearing deformation remains
Implementation Method 3
when the external load exceeds the designed threshold value, the bearing structural member deforms, and provides a counter force equal to the designed threshold value at the same time
Data Source
AI summary
The present application discloses a bearing structural member, a support, a joint assembly and a tube section assembly, wherein the maximum counter force provided by the bearing structural member under an external load is an own designed threshold value, namely when the external load is greater than the designed threshold value of the bearing structural member, the bearing structural member deforms, and provides a counter force equal to the designed threshold value; the support includes at least one bearing structural member; and the joint assembly and the tube section assembly are both equipped with the support. When the external load is not high and is less than the designed threshold value, the bearing structural member may effectively suppress the deformation just like a rigid structural member; when the external load exceeds the designed threshold value, the bearing structural member may deform, and provide a stable counter supporting force less than the external load. The bearing structural member may be applied to the support, the joint assembly and the tube section assembly, plays a role in protecting the structures or key structural components, and may be widely applied to the fields of design of bridges, design of building structures, design of tunnels and the like.