Interlocking Side-Lapped Seams for Steel Deck Slip Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for forming side-lapped seam attachments in steel deck structures are challenging, time-consuming, and require unwieldy tools, lacking in efficiency and slip/shear resistance.
Innovation Solution
A steel deck structure with interlocking side-lapped seams featuring a first steel deck panel with an upturned male lip and a second panel with a downwardly-directed U-shaped female channel, where the attachment comprises slit openings and semi-conical shaped lobes to enhance slip/shear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods are used to form side-lapped seam attachments, then the deck panels can be secured together, but the process is challenging and time-consuming requiring unwieldy tools
Solution Approach 1:
The attachment is segmented into distinct functional components: slit openings for interlocking and semi-conical lobes for mechanical engagement. This segmentation allows each component to perform its specific function efficiently, reducing the overall complexity of the attachment formation process while improving productivity.
Solution Approach 2:
The semi-conical shaped lobes provide a curved, tapered geometry that facilitates easier insertion and interlocking compared to straight or angular shapes. This curvature reduces resistance during the attachment forming process, making the tool operation simpler and more efficient.
2Strength
If existing attachment designs are used, then the deck panels can be joined, but the slip and shear resistance is insufficient
Solution Approach 1:
The semi-conical lobes with their tapered curved surfaces provide superior mechanical interlocking compared to flat or angular designs. The conical geometry distributes shear forces more effectively across the contact surfaces, enhancing slip and shear resistance while maintaining a relatively simple attachment structure.
Solution Approach 2:
The attachment combines two distinct geometric features (slit openings and semi-conical lobes) into a unified structure that leverages the strengths of both designs. The slit openings provide precise alignment and initial engagement, while the semi-conical lobes provide robust mechanical interlocking, together achieving high slip and shear resistance.
Data Source
AI summary
A steel deck structure can comprise a first steel deck panel including an upturned male lip and a second steel deck panel including a downwardly directed U-shaped female channel that can extend over and receive the upturned male lip to form a side-lapped seam. A tool can be used to form an attachment within the side-lapped seam to attach the steel deck panels together. The attachment can comprise one or more slit openings extending through the side-lapped seam and a pair of semi-conical shaped lobes that bulge in an opposite transverse direction from the longitudinal center of the side-lap seam and extend longitudinally along the side-lapped seam in opposite directions from the one or more slit openings. The tool can be powered by a linear actuator and can include a control system that controls the linear actuator for automatically forming the attachments.