Retaining Wall Block with Segmented Support Legs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing concrete retaining wall blocks are heavy and difficult to install, requiring significant labor and material, while also lacking sufficient space for engineered backfill and drainage, which can compromise the structural integrity and stability of the wall.
Innovation Solution
The design of a retaining wall block with rearward extending support legs that provide a stable base, reduce weight, and allow for increased engineered backfill and drainage, combined with a novel retaining pin system for easier interlocking and alignment, enabling quicker and more secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional solid concrete blocks are used, then structural strength is maintained, but weight becomes excessive and handling difficulty increases
Solution Approach 1:
The block is segmented from a solid rectangular form into a front face portion and rearward-extending support legs. This segmentation removes unnecessary concrete from the rear portion while maintaining the structural integrity needed for strength, significantly reducing weight and improving handling ease.
Solution Approach 2:
Unnecessary concrete material is extracted from the rear portion of the block, retaining only the essential front face and support legs. This extraction reduces weight and material cost while preserving the block's load-bearing capacity and interlocking functionality.
2Loss of substance
If solid rectangular blocks are used, then material strength is sufficient, but material consumption and cost increase
Solution Approach 1:
Excessive cementitious material is extracted from the block design by removing the solid rear portion. The remaining structure of front face and support legs provides sufficient strength for retaining wall applications while dramatically reducing material consumption and associated costs.
Solution Approach 2:
Concrete material is concentrated in areas where it is most needed - the front face for structural integrity and the support legs for load bearing and interlocking. Areas where concrete would be unnecessary or redundant are left empty, optimizing material distribution for both strength and economy.
3Ease of operation
If blocks are made lighter by removing material, then handling becomes easier, but structural integrity may be compromised
Solution Approach 1:
The block is divided into functionally optimized segments - a substantial front face for structural integrity and interlocking, and slender support legs for load bearing. This segmentation achieves weight reduction while maintaining reliability through strategic material placement in critical areas.
Solution Approach 2:
The block transitions from a symmetric solid rectangle to an asymmetric form with a bulky front face and thin rear legs. This asymmetric design places material where it provides maximum structural benefit (front face for interlocking and load distribution) while minimizing weight in areas where material is less critical (rear portion for drainage space).
4Productivity
If solid blocks are used, then manufacturing is simple, but installation time and labor costs increase
Solution Approach 1:
The segmented geometry with front face and support legs, while more complex than a solid block, is designed to be moldable in a single manufacturing process. The complexity is optimized to enable faster installation through reduced weight and improved handling, ultimately increasing productivity despite moderate increases in mold complexity.
Data Source
AI summary
A retaining wall block generally comprises a block body having a front face with a plurality of support legs extending rearward therefrom, opposed first and second side surfaces, and opposed and substantially parallel upper and lower surfaces. A preferred leg spacing of side support legs allows the side legs of each successive course of blocks to rest on the side legs of the prior-laid rows, while allowing the center legs to float freely. The free-floating center leg may allow attachment of additional stabilization means to the center leg without preventing the blocks from resting directly on the course below.