Prefabricated Bamboo Composite Pipe Gallery Seismic Design
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Solution Overview
Problem
Conventional reinforced concrete composite utility tunnels are costly, labor-intensive, have poor anti-seepage and anti-seismic performance, and require a long construction period, making them unsuitable for modern urban infrastructure needs.
Innovation Solution
A prefabricated bamboo composite utility tunnel with a circular cross section, comprising a liner layer of flame-retardant resin and fabric, a structural layer of wound bamboo strips with water-soluble resin, and an outer protective layer of flame-retardant resin, supported by stainless steel components, offering improved seismic resistance, reduced material costs, and faster construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforced concrete structure is used for composite utility tunnels, then structural strength is improved, but construction cost and labor consumption increase
Solution Approach 1:
The patent uses bamboo strips combined with resin to create a composite material that provides both structural strength and cost-effectiveness. The bamboo strips are arranged in specific patterns and bonded with resin to form panels that replace traditional reinforced concrete, achieving comparable strength while reducing material and labor costs.
Solution Approach 2:
The patent changes the material parameters from conventional concrete and steel reinforcement to bamboo-based composite materials. This parameter change includes modifying the structural composition, material density, and bonding characteristics to achieve optimal strength-to-cost ratio for utility tunnel construction.
2Stability of the object's composition
If reinforced concrete structure is used for composite utility tunnels, then structural stability is improved, but anti-seismic and anti-seepage performance deteriorate
Solution Approach 1:
The bamboo-resin composite material provides inherent flexibility and elasticity that enhances anti-seismic performance. The natural properties of bamboo combined with modern resin technology create a material that can withstand seismic forces while maintaining structural integrity and providing better water-tightness compared to traditional concrete.
Solution Approach 2:
The patent applies different bamboo strip arrangements and resin formulations in different regions of the tunnel structure to optimize local performance. The composite panels are designed with varying densities and reinforcement patterns to address specific requirements for seismic resistance and water-tightness in different structural zones.
3Duration of action of stationary object
If reinforced concrete structure is used for composite utility tunnels, then durability is improved, but construction period increases
Solution Approach 1:
The bamboo composite panels are manufactured off-site in advance with pre-applied resin bonding and quality control. This preliminary fabrication allows for parallel production while site preparation occurs, significantly reducing the on-site construction period while ensuring durable, factory-controlled quality standards.
Solution Approach 2:
The tunnel structure is divided into modular bamboo composite panels that can be manufactured independently and assembled on-site. This segmentation enables concurrent manufacturing of multiple sections while minimizing disruption to surrounding areas, reducing overall construction time while maintaining structural durability through standardized, quality-controlled panel production.
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 bamboo composite tunnel provides enhanced anti-seismic and anti-deformation capabilities, reduces construction time and labor, and is eco-friendly, with a lower foundation strength requirement, while ensuring waterproof, corrosion-resistant, and fire-proof performance.
Implementation Method 1
The liner layer comprises flame-retardant resin and flame-retardant fabric
Implementation Method 2
form a smooth, waterproof and corrosion-resistant inner wall of the tunnel
Implementation Method 3
form a smooth, waterproof and corrosion-resistant inner wall of the tunnel
Implementation Method 4
due to the excellent elasticity modulus of bamboos, the prefabricated composite utility tunnel has strong anti-deformation ability
Implementation Method 5
a structural layer, and an outer protective layer from inside to outside in a radial direction. The liner layer comprises flame-retardant resin and flame-retardant fabric. The structural layer comprises at least a plurality of bamboo strip layers which are made by winding bamboo strips comprising a water-soluble resin
Implementation Method 6
the outer protective layer made of flame-retardant resin protects the inner structure so that the outer surface of the tunnel is waterproof, corrosion-resistant and leakage-reducing
Implementation Method 7
the outer protective layer made of flame-retardant resin protects the inner structure so that the outer surface of the tunnel is waterproof, corrosion-resistant and leakage-reducing
Implementation Method 8
the outer protective layer made of flame-retardant resin protects the inner structure so that the outer surface of the tunnel is waterproof, corrosion-resistant and leakage-reducing
Implementation Method 9
The support component is secured to an inner surface of the tunnel body
Implementation Method 10
the entire tunnel is fire-proof. The support component and other interior structural connectors are disposed on the inner surface of the tunnel to guarantee enough supporting force for other interior structures
Data Source
Figure 1
Figure 2
AI summary
Provided is a prefabricated bamboo composite pipe gallery having a circular cross section and formed from a plurality of connected prefabricated pipe segments, wherein the pipe segments comprise a pipe body (1) and a force-bearing component (2), the pipe body (1) comprises, successively from the inside to the outside, a liner layer (11), a structural layer (12) and an outer protective layer (13), the liner layer (11) comprises a flame-retardant resin and a flame-retardant fabric, the structural layer (12) comprises at least a plurality of bamboo sliver layers formed by winding bamboo slivers, onto which a water-soluble resin is adhered, the outer protective layer (13) comprises at least a flame-retardant resin, and the force-bearing component (2) is fixed to the inner surface of the pipe body. The prefabricated pipe gallery made from bamboo has a good strength, light mass, low cost, good impermeability, strong shock resistance and convenient construction.