Laminated Log Structure With Dual Support Lines for Stable Stacking
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Solution Overview
Problem
Laminated log structures require additional support structures to achieve stability, which complicates construction and increases material costs and complexity.
Innovation Solution
The use of laminated logs with vertical and horizontal grain direction lamellas, featuring a middle lamella with two load-bearing support point lines, allows for improved bending strength and reduced need for additional support structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If additional support structures are used to achieve stability in laminated log structures, then structural stability is improved, but device complexity and material costs increase
Solution Approach 1:
The middle lamella is segmented to include two separate load-bearing support point lines instead of a single continuous support surface. This segmentation creates distinct support zones that align with corresponding support points on adjacent logs, enabling stable stacking without additional couplings or support structures
Solution Approach 2:
The support function is transitioned from a two-dimensional surface contact to a one-dimensional line contact. The support point lines extend in the longitudinal direction of the log, creating linear support zones that provide sufficient stability while reducing the need for additional structural elements in the width direction
2Strength
If additional support structures are used to achieve stability, then bending strength is improved, but manufacturing complexity increases
Solution Approach 1:
The load-bearing support point lines are pre-formed into the middle lamella during the log manufacturing process. This preliminary action ensures that the bending strength requirements are met before the logs are stacked, eliminating the need for additional field assembly of support structures and simplifying construction
Solution Approach 2:
The grain direction of the middle lamella is changed to extend in the height direction of the log, perpendicular to the lateral lamellas. This parameter change optimizes the wood grain orientation to provide maximum bending strength along the longitudinal axis, allowing the log to support itself without additional couplings
Data Source
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AI summary
A laminated log (100) has a longitudinal direction (40), a height direction (20) and a width direction (30). The log comprises a middle lamella (110) extending in the longitudinal direction of the log, a first lateral lamella (120a) extending in the longitudinal direction of the log and a second lateral lamella (120) extending in the longitudinal direction of the log. The middle lamella has a grain direction extending in the height direction of the log. The first and the second lateral lamella have a grain direction extending in the longitudinal direction of the log. The middle lamella is, in the width direction of the log, between the first and the second lateral lamella. The middle lamella is provided with two load-bearing support point lines extending in the longitudinal direction of the log for supporting the log comprising a first support point line and a second support point line, which are spaced from each other in the width direction of the log.