Interlocking Paving Block Dual Composite Joint System
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Solution Overview
Problem
Conventional paving stone joint systems often fail to maintain proper spacing for buffering material, leading to potential displacement and damage due to inadequate joint filling, improper installation, and insufficient material compaction, especially under high loads.
Innovation Solution
A dual composite system is introduced, where a primary rack-and-pinion type system with minimal contact and narrow joints in the lower area minimizes displacement potential, and a secondary system with wider gaps in the upper area accommodates necessary buffering material, ensuring sufficient space for joint material to absorb high forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If stones are laid with direct stone-stone contact to simplify installation, then ease of operation is improved, but displacement resistance deteriorates due to insufficient buffering material space
Solution Approach 1:
The side surface is segmented into two distinct composite systems: a primary composite system with narrow joints for displacement prevention, and a secondary composite system with wider joints for buffering material accommodation. This segmentation allows each system to fulfill its specific function independently, resolving the contradiction between ease of laying and displacement resistance.
Solution Approach 2:
Different regions of the side surface are assigned different properties: the lower region (primary composite system) has narrow joints optimized for mechanical interlocking and displacement resistance, while the upper region (secondary composite system) has wider joints optimized for buffering material placement. This local differentiation resolves the contradiction by providing appropriate characteristics in each zone.
2Reliability
If wider joints are provided to accommodate buffering material, then displacement resistance is improved, but device complexity increases due to dual composite systems
Solution Approach 1:
Two composite systems that would normally require separate implementation are merged into a single integrated structure on the paving stone side surface. The primary and secondary composite systems are combined vertically, with the primary system at the lower portion and the secondary system at the upper portion, reducing overall device complexity while maintaining both functions.
Solution Approach 2:
The single side surface structure serves multiple functions simultaneously: the primary composite system provides mechanical interlocking and displacement resistance, while the secondary composite system provides buffering material accommodation. This multi-functionality reduces the need for separate components, thereby reducing device complexity.
3Reliability
If narrow joints are used in the primary composite system, then displacement resistance is improved, but joint filling difficulty increases
Solution Approach 1:
The joint system is segmented into two zones: the primary composite system with narrow joints that are less critical for filling, and the secondary composite system with wider joints that are easier to fill. This segmentation allows the narrow joints to provide their displacement resistance function while the wider joints accommodate the buffering material, reducing overall filling difficulty.
Solution Approach 2:
Different joint width qualities are applied locally: narrow joints in the primary system where precision is less critical, and wider joints in the secondary system where material accommodation is prioritized. This local quality differentiation makes the joint filling process easier while maintaining displacement resistance.
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
This design prevents damage-prone displacements between adjacent stones by maintaining precise positioning and allowing for optimal joint filling, even with imperfect installation, while simplifying the laying process by automatically setting joint widths and reducing material escape.
Implementation Method 1
which, when the paving stone is in the laid state, are connected to composite sections on a side surface of an adjacent paving stone in a rack-and-pinion manner
Implementation Method 2
corresponding composite systems of paving stones are used to prevent displacement between two paving stones in the event of a corresponding horizontal load
Data Source
Figure 1~2
Figure 3
AI summary
A paving stone is described which has on at least one side surface a plurality of parallel, vertically projecting, rib-shaped interlocking sections that, when the paving stone is laid, interact in a rack-like fashion with interlocking sections on the side surface of an adjacent paving stone. The paving stone has a primary interlocking system in the lower region of its at least one side surface and a different secondary interlocking system in the region above it, which comprises the parallel, vertically rib-shaped interlocking sections. The primary interlocking system is designed such that, when laid, a narrow joint is formed with the neighboring stone, while the secondary interlocking system is designed such that a wider joint is formed in comparison. Each stone is thus equipped with a double interlocking system.