Ductile Bridge Pier Anti-Collision Material
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Solution Overview
Problem
Existing anti-collision devices for bridge piers lack the ability to expand and contract effectively to protect against floating objects, and they require complex control systems and high production costs.
Innovation Solution
A ductile material composed of thermoplastic polyurethane, neodymium-iron-boron, nickel-titanium alloy, metal magnetic powder, and polypropylene or polyethylene, which can expand magnetically to protect bridge piers and contract naturally to facilitate navigation, without the need for a complex control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the anti-collision device uses traditional rigid materials, then the structural strength is sufficient, but the device cannot expand or contract to adapt to navigation needs
Solution Approach 1:
The patent uses a composite material system consisting of thermoplastic polyurethane matrix combined with nickel-titanium alloy particles and neodymium-iron-boron magnetic particles. This composite structure enables both the required strength from the polymer matrix and the shape memory/ductile effects from the alloy particles, resolving the contradiction between adaptability and strength.
Solution Approach 2:
The patent changes the physical and chemical parameters of the material by incorporating nickel-titanium alloy particles with specific phase transformation temperatures and neodymium-iron-boron magnetic particles with specific magnetic properties. These parameter changes enable the material to exhibit ductile behavior and respond to magnetic fields, achieving both strength and adaptability.
2Strength
If the anti-collision device is manufactured with a large diameter to ensure anti-collision performance, then the protective effect is improved, but the distance between adjacent bridge piers is reduced which is not conducive to navigation
Solution Approach 1:
The patent transforms the static anti-collision device into a dynamic one that can change its diameter. The ductile material allows the device to expand to a larger diameter when collision is detected to improve protective effect, and contract to a smaller diameter during normal navigation to maintain adequate spacing between piers.
Solution Approach 2:
The patent enables parameter changes in the device diameter through the ductile material properties. The material can undergo reversible deformation to change the device volume and diameter, allowing the system to adapt between large-diameter protective mode and small-diameter navigation mode.
3Adaptability or versatility
If an electromagnetic telescopic device and control system are used to enable bridge piers to contract and expand, then the anti-collision performance is improved, but the production costs increase significantly
Solution Approach 1:
The patent enables the anti-collision device to perform expansion and contraction operations autonomously through the inherent properties of the ductile material and magnetic response, without requiring external electromagnetic telescopic devices or complex control systems. This self-service capability significantly reduces production costs while maintaining the adaptability function.
Solution Approach 2:
The patent replaces the mechanical electromagnetic telescopic device system with a material-based solution using ductile materials and magnetic field stimulation. This substitution eliminates complex mechanical components and control systems, simplifying the structure and reducing manufacturing costs while achieving the same functional outcome.
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 ductile material effectively expands to protect bridge piers from collisions and contracts to maintain navigation channels, reducing production costs and eliminating the need for complex control systems.
Implementation Method 1
50-62 parts by mass of thermoplastic polyurethane, 11-33 parts by mass of nickel-titanium alloy
Implementation Method 2
11-33 parts by mass of neodymium-iron-boron, 2-3 parts by mass of metal magnetic powder
Data Source
AI summary
A ductile material, a method for manufacturing a ductile member, and an anti-collision device for bridge piers, wherein the ductile material includes specific components in parts by mass as follows: 50-62 parts of thermoplastic polyurethane, 11-33 parts of neodymium-iron-boron, 12-24 parts of nickel-titanium alloy, 2-3 parts of metal magnetic powder, and 1-2 parts of polypropylene or polyethylene or polylactic acid or polyetheretherketone. The use of the ductile material, the method for manufacturing a ductile member, and the anti-collision device for bridge piers facilitates navigation.