Corrugated Shearwall Structure for Controlled Lateral Load Yield
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Solution Overview
Problem
Conventional prefabricated shearwalls have limitations in withstanding lateral loads, necessitating an improvement in lateral load bearing capabilities.
Innovation Solution
A prefabricated shearwall with a central panel featuring corrugations and internal stiffeners to increase cross-sectional area and section modulus, along with controlled yield locations to enhance resistance to lateral forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional planar panel is used in the shearwall, then the manufacturing is simple, but the lateral load bearing capability is limited
Solution Approach 1:
The patent applies corrugations (curved/ridged structures) to the panel surface, transforming it from a flat planar shape to a three-dimensional corrugated shape. This curvature increases the section modulus and moment of inertia, thereby enhancing the lateral load bearing capability while maintaining manufacturing feasibility through standard forming processes
2Strength
If the panel cross-sectional area is increased to withstand vertical loads, then the vertical load capacity improves, but the lateral resistance may be compromised due to increased weight
Solution Approach 1:
The patent utilizes corrugations that extend in the height direction, adding dimensional complexity to the panel cross-section. This dimensional change increases the cross-sectional area for vertical load capacity while the corrugated geometry simultaneously increases the section modulus for lateral resistance, achieving both objectives without simply increasing overall panel thickness and weight
Data Source
AI summary
A prefabricated shearwall includes a central panel having reinforcing stiffeners within side edges of the panel. The central panel is provided with one or more corrugations to withstand both vertical (gravitational) and lateral loads. The stiffeners in the side edges provide improved resistance to lateral loads and controllable yielding to dissipate shear stresses within the shearwall.