High-Energy Barrier Net with Prestressed Anchor Cables
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Solution Overview
Problem
Current protective barrier structures for geological hazards, such as high-energy rockfalls and collapses, are inadequate in meeting the high impact energy requirements, particularly exceeding 5000 kilojoules, in complex mountainous environments with frequent extreme weather and earthquakes.
Innovation Solution
A barrier structure comprising a supporting pile array with a barrier net connected between the piles, anchored to mountain slope surfaces via pull plates with a high yield elongation rate and fracture elongation rate, designed to absorb and dissipate the impact energy of rockfalls, featuring a grid-like structure with transverse and longitudinal steel strands and prestressed anchor cables for stability and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional flexible blocking nets are used, then the structure is simple and easy to install, but the protective energy level is insufficient for high-energy impacts exceeding 5000 kJ
Solution Approach 1:
The barrier net is divided into multiple energy dissipation units with grid-like structures, where each unit independently absorbs impact energy through controlled deformation. This segmentation allows the system to handle high-energy impacts by distributing the energy absorption across multiple units rather than relying on a single monolithic structure.
Solution Approach 2:
The barrier net employs composite material structures combining high-strength steel strands with energy-absorbing elements. The composite design integrates materials with different mechanical properties to simultaneously achieve high strength for withstanding impact forces and controlled flexibility for energy dissipation, resolving the contradiction between strength and structural simplicity.
2Reliability
If the barrier net height and material elongation rates are increased to handle high-energy impacts, then the protective capability improves, but the material requirements and construction difficulty increase
Solution Approach 1:
The invention specifies optimized parameter ranges for the barrier net, including height requirements and material elongation rates (yield elongation rate and fracture elongation rate). These parameters are carefully selected to achieve the necessary protective capability for high-energy impacts while remaining within feasible manufacturing and construction limits, balancing reliability with ease of manufacture.
3Duration of action of stationary object
If the barrier net is designed to absorb high impact energy, then the service life is extended, but the initial material cost and structural investment increase
Solution Approach 1:
The barrier net design converts the harmful impact energy into beneficial controlled deformation and energy dissipation through its grid-like structure and material properties. By designing the system to efficiently absorb and dissipate energy through controlled mechanisms, the structure achieves extended service life without requiring excessive material quantities, as the energy absorption is achieved through intelligent design rather than sheer material volume.
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 barrier structure provides enhanced protection against high-energy impacts, with a higher protective energy level than traditional nets, ease of maintenance, and the ability to withstand impacts from large heights, ensuring effective rockfall containment and prolonged service life.
Implementation Method 1
a yield elongation rate of a material of the barrier net and a fracture elongation rate of the material of the barrier net are set
Implementation Method 2
a yield elongation rate of a material of the barrier net and a fracture elongation rate of the material of the barrier net are set
Implementation Method 3
the low-carbon steel wires are coated with Zn-Al-alloy for an anti-corrosion treatment
Data Source
AI summary
A barrier structure for bearing a high-energy impact and construction method thereof are provided. The barrier structure includes a supporting pile array arranged between two opposite mountain slope surfaces. The supporting pile array is arranged in a straight line and includes two or more supporting piles. The two or more supporting piles are fixed at a lower part of a mountain. A barrier net is connected to the two or more supporting piles. The barrier net passes through the supporting pile array and extends to the two opposite mountain slope surfaces. The barrier net is fixed on the two opposite mountain slope surfaces. Pull plates are disposed on the two opposite mountain slope surfaces, and one side of each of the pull plates is fixed to a corresponding slope surface of the two opposite mountain slope surfaces through reverse prestressed anchor cables.