Zigzag Precast Road Panels With Jointed Two-Layer Assembly
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Solution Overview
Problem
Existing paved roads face issues with insufficient curing during rain, limited use time for pavement materials, noise pollution during repair, and complex assembly and removal processes, especially in high-traffic areas like highways.
Innovation Solution
A two-layer precast paved road system featuring precast lower and upper pavement panels arranged in a zigzag manner with joint members for easy engagement, allowing quick assembly and disassembly without causing unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If traditional single-layer asphalt pavement is used, then construction is simple and cost is low, but service life is short and frequent repairs are needed
Solution Approach 1:
The pavement is divided into multiple functional layers with distinct purposes: a wear-resistant surface layer for durability, a binding layer for structural integrity, and a base layer for load distribution. This segmentation allows each layer to be optimized for its specific function, extending overall pavement service life while maintaining manageable construction complexity through standardized layering procedures
Solution Approach 2:
The patent employs composite material composition across different pavement layers, combining asphalt concrete with varying aggregate structures and binder ratios. The surface layer uses polished stone asphalt concrete for wear resistance, while underlying layers use traditional asphalt concrete, creating a composite structure that leverages the advantages of different material compositions to extend service life
2Ease of manufacture
If traditional single-layer asphalt pavement is used, then construction process is simple, but maintenance frequency is high
Solution Approach 1:
By segmenting the pavement into replaceable functional layers, the system enables targeted maintenance where only the worn surface layer needs replacement rather than reconstructing the entire pavement structure. This maintains construction simplicity for new installations while dramatically improving maintenance efficiency through selective layer replacement
Solution Approach 2:
The design allows the surface wear layer to be discarded and replaced independently while preserving the underlying binding and base layers. This approach improves maintenance efficiency by eliminating the need to remove and dispose of intact structural layers, reducing both material waste and maintenance time while keeping initial construction processes straightforward
3Duration of action of stationary object
If multi-layer pavement structure is implemented, then service life is extended, but construction complexity increases
Solution Approach 1:
The multi-layer structure is segmented into standardized functional units with defined thicknesses and material specifications, allowing each layer to be constructed independently using established techniques. This segmentation extends service life through optimized layer functions while controlling construction complexity by applying repetitive, well-documented construction procedures to each layer
Solution Approach 2:
The underlying binding and base layers are constructed and cured in advance before applying the final surface layer. This preliminary action allows subsequent layers to be installed on a stable, prepared substrate, extending overall pavement service life while simplifying construction by eliminating the need for complex simultaneous multi-layer construction operations
4Quantity of substance
If conventional asphalt pavement is used, then initial construction cost is low, but long-term maintenance cost is high
Solution Approach 1:
The design enables selective discarding of only the worn surface layer while recovering and retaining the underlying binding and base layers for continued use. This approach reduces long-term maintenance costs by minimizing material consumption for repairs while improving maintenance efficiency through faster, less invasive replacement processes compared to conventional full-depth reconstruction
Data Source
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AI summary
Provided is a multilayer precast paved road that enables simple coupling between upper pavement panels and lower pavement panels using joint members and enables easy and quick assembly and removal without requiring a large number of processes without causing any unevenness. A multilayer precast paved road including a plurality of precast lower pavement panels 3 laid on a road panel 6 and a plurality of precast upper pavement panels laid on upper surfaces of the lower pavement panels 3 is configured such that the lower pavement panels 3 and the upper pavement panels 2 are arranged in a zigzag manner, and joint members 5 are provided to lie between upper and lower joining surfaces of the lower pavement panels 3 and the upper pavement panels 2, and the lower pavement panels 3 and the upper pavement panels 2 are coupled to each other through engagement or fitting between the lower pavement panels 3 and the upper pavement panels 2 achieved by the joint members 5.