Semi-Interlocking Construction Blocks for Seismic Resistance
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Solution Overview
Problem
Structural integrity of buildings constructed with blocks is compromised due to sliding, foundation shifts, wind shear, and earthquakes, often requiring costly engineering solutions and skilled labor to maintain strength and long-term integrity.
Innovation Solution
A semi-interlocking construction block system featuring prism-shaped male and female fittings with trapezoidal dimensions, allowing for semi-complementary engagement that enhances compressive and tensile strength while minimizing shifting, and can be used with or without adhesive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional blocks are stacked with adhesion materials, then construction is simpler and costs are lower, but structural integrity is compromised due to sliding, foundation shifts, wind shear, and earthquakes
Solution Approach 1:
The block is divided into distinct functional segments: a body portion and a protrusion element. The protrusion acts as a separate interlocking component that engages with corresponding recesses in adjacent blocks, creating mechanical interlocking while keeping the main block design relatively simple and modular.
Solution Approach 2:
The protrusion element features asymmetric geometry with specific dimensional relationships (length, width, height ratios) that create complementary fitting surfaces. This asymmetric design enables directional interlocking that resists sliding and shifting while maintaining compatibility with standard block dimensions.
2Reliability
If more adhesive material is used to maintain structural integrity, then resistance to sliding and shifting improves, but construction costs and labor requirements increase
Solution Approach 1:
The block system provides self-interlocking through the protrusion-recess mechanism, where the blocks themselves create the structural connection without relying on external adhesive materials. The mechanical interlocking is inherent in the block design, eliminating the need for additional bonding agents and associated labor.
Solution Approach 2:
The chemical bonding mechanism (adhesive) is replaced with a mechanical interlocking system (protrusion-recess engagement). This substitution provides equivalent or superior structural integrity through physical interlocking, eliminating costs and labor associated with adhesive application while maintaining resistance to sliding and shifting.
3Strength
If interlocking fittings are designed to fully engage, then structural strength is maximized, but gaps and voids are eliminated requiring more material
Solution Approach 1:
The protrusion-recess system implements partial interlocking where the protrusion engages with the recess to provide sufficient mechanical strength without requiring complete fusion or elimination of all gaps. This partial engagement is adequate for structural purposes while allowing for natural dimensional variations and thermal expansion.
Solution Approach 2:
The interlocking function is concentrated in specific localized regions (the protrusion and recess areas) rather than requiring uniform engagement across entire block surfaces. This localized interlocking provides necessary strength at critical stress points while leaving other areas open for mortar application or natural gaps.
Data Source
AI summary
A semi-interlocking construction block system may include blocks having prism shaped male and female fittings configured for semi-interlocking interaction. When mated the male and female fittings may engage along their respective interfacing upper bases and lower ends of their respective lateral side faces. Gaps may be defined between upper ends of their respective lateral side faces. The fittings may include arcuate edges which may be quarter rounded.