Bridge Pier Collision Structure Using UHPC and Bionic Honeycomb
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Solution Overview
Problem
Conventional bridge pier collision prevention structures suffer from low protection efficiency, susceptibility to local damage, and poor reusability due to limitations in energy absorption and material brittleness, with existing materials failing to effectively manage vehicle collisions.
Innovation Solution
A vehicle collision prevention device featuring a bionic honeycomb column thin-walled structure combined with an ultra-high performance concrete panel and restraint plate, incorporating rib plates and shear nails to enhance bonding and distribute impact forces, enhancing energy absorption and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional rubber materials are used for collision protection, then the structure can handle low impact energy and small impact angles, but the energy absorption capacity is limited and cannot protect against high impact energy collisions
Solution Approach 1:
The patent employs a composite structure combining ultra-high performance concrete (UHPC) panel with bionic honeycomb column thin-walled structure. The UHPC provides high strength and toughness to resist impact, while the honeycomb structure provides excellent energy absorption through controlled collapse mechanisms. This composite approach overcomes the limitations of single rubber materials by integrating the advantages of both rigid (UHPC) and energy-absorbing (honeycomb) components, achieving both high energy absorption capacity and reliable protection efficiency.
2Strength
If a single composite material is used for structural protection, then the material can support the structure, but it is prone to fracture due to brittleness causing serious local damage
Solution Approach 1:
The patent segments the protective structure into distinct functional components: the UHPC panel serves as the outer protective shell, while the bionic honeycomb columns inside the thin-walled structure serve as energy absorption elements. This segmentation allows each component to perform its specialized function - the UHPC resists local damage through its high toughness, while the honeycomb structure absorbs energy through controlled fragmentation, preventing catastrophic failure of the entire structure.
3Loss of energy
If a metal sandwich structure is used for collision avoidance and energy absorption, then the structure can absorb energy, but the metal material is prone to premature destruction, instability, and corrosion
Solution Approach 1:
The patent changes the material parameters from conventional metal to ultra-high performance concrete, which possesses superior durability, corrosion resistance, and stability. The UHPC panel maintains structural integrity under impact loads without the premature destruction and corrosion issues of metal. Simultaneously, the bionic honeycomb structure provides the necessary energy absorption capability, achieving both energy absorption and long-term structural reliability.
4Reliability
If existing anti-collision structures are used, then the bridge pier can be protected, but the protection efficiency is low and the structures are prone to local damage
Solution Approach 1:
The patent applies local quality by giving different regions of the protective structure different properties: the UHPC panel provides high strength and damage resistance at the impact interface, while the bionic honeycomb columns provide controlled energy absorption in the interior. The rib plates and shear nails create localized bonding zones that enhance the interface between components, preventing local damage propagation and improving overall protection efficiency.
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 device effectively absorbs kinetic energy from vehicle collisions, reducing damage to bridge piers and ensuring structural integrity, thereby improving protection efficiency and reusability.
Implementation Method 1
the panel includes the rib plates and the shear nails, so that an interface bonding force between the ultra-high performance concrete panel and the restraint plate is enhanced, the ultra-high performance concrete panel and the restraint plate are closely bonded together
Implementation Method 2
which can effectively absorb kinetic energy of vehicle to resist vehicle collision, reduce the degree of damage to the bridge pier
Data Source
AI summary
Provided is a vehicle collision prevention device for a bridge pier, which includes a bionic honeycomb column thin-walled structure arranged on the bridge pier and an anti-collision structure arranged on the bionic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a restraint plate arranged in a circumferential direction of the panel and forming a closed loop, shear nails arranged in an interior of the panel and rib plates arranged on inner walls of the restraint plate and extending into the interior of the panel. In the present disclosure, the panel includes the rib plates and the shear nails, so that an interface bonding force between the ultra-high performance concrete panel and the restraint plate is enhanced, which makes them closely bonded together. The ultra-high performance concrete anti-collision structure and the bionic honeycomb column thin-walled structure are combined together to form a combined structure composed by them.