FRP Composite Pile With Segmented Connecting Device
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Solution Overview
Problem
Existing pile foundations in civil and marine engineering, such as steel and reinforced concrete piles, face corrosion issues in high saline areas, reducing their bearing capacity and increasing engineering safety risks, while lacking efficient assembly methods for composite material piles.
Innovation Solution
The development of an FRP composite material pile using an FRP composite material, comprising an FRP winding pipe, pultrusion hollow profile, and connecting device, allowing for on-site assembly and enhanced corrosion resistance, with the FRP pultrusion profile being used as a membrane to form a composite pipe section and connecting plates, bars, and pins for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel piles or reinforced concrete piles are used in high saline areas, then high strength and good penetration ability are achieved, but corrosion resistance deteriorates significantly
Solution Approach 1:
The patent uses FRP (fiber reinforce plastic) composite material to replace traditional steel or concrete pile materials. The FRP composite material combines high strength with excellent corrosion resistance, particularly in high saline environments. The composite structure consists of fiber reinforcement embedded in a polymer matrix, providing both mechanical strength and chemical stability against chloride ion corrosion.
2Reliability
If traditional composite material piles are used, then corrosion resistance is improved, but assembly complexity and construction time increase
Solution Approach 1:
The pile structure is divided into multiple standardizable sections that can be manufactured separately and assembled on-site. Each section includes standardized connecting devices with connecting plates, connecting bars, and connecting pins, enabling modular assembly. This segmentation allows for pre-fabrication of corrosion-resistant FRP sections while simplifying the assembly process through standardized connection interfaces.
Solution Approach 2:
The connecting device acts as an intermediary component between FRP pile sections. The connecting device includes connecting plates attached to the FRP sections, connecting bars for structural connection, and connecting pins for final assembly. This intermediary connection system enables easy assembly and disassembly while maintaining the integrity and corrosion resistance of the FRP structure.
3Reliability
If FRP composite material piles with complex assembly structures are developed, then connection reliability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The connecting device is segmented into three independent components: connecting plates (attached to FRP sections), connecting bars (structural connectors), and connecting pins (assembly fasteners). This segmentation allows each component to be manufactured separately using optimal processes, simplifying production while ensuring reliable connections through standardized interfaces.
Solution Approach 2:
The connecting device is designed as a universal connection system that can be applied to different FRP pile sections and configurations. The standardized connecting plates, bars, and pins can be used across various pile designs and assembly scenarios, reducing the need for custom manufacturing and lowering overall production complexity and cost.
Data Source
AI summary
The present disclosure discloses a fiber reinforce plastic (FRP) composite material pile prepared by an FRP composite material. The FRP composite material pile includes: an FRP winding pipe, an FRP pultrusion hollow profile, and a connecting device. The FRP pultrusion hollow profile includes an outer ring pipe, an inner ring pipe, and a plurality of reinforcing bars. The FRP pultrusion hollow profile is pultruded at one time by pultrusion equipment, and fiber materials thereof are arranged in the longitudinal direction of the pipe. The FRP winding pipe is provided with circumferential fiber materials by taking the FRP pultrusion hollow profile as a membrane, and forms a composite pipe section with the FRP pultrusion hollow profile. The inner ring shape of the cross section of the FRP winding pipe is matched with the FRP pultrusion hollow profile. The FRP connecting device includes connecting plates, connecting bars, and connecting pins.