WT-Section Steel Panel Damper for Cost-Effective Seismic Energy Dissipation
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Solution Overview
Problem
Conventional steel panel dampers using low-yield strength steel are costly and difficult to fabricate, necessitating a more economical and easily constructible anti-seismic system with improved seismic performance.
Innovation Solution
A steel panel damper composed of H-shaped steel segments with elastic and energy dissipation segments, connected by end plates and stiffeners, which can be fabricated using common steel materials, enhancing lateral stiffness and energy dissipation capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If low-yield strength steel is used for the energy dissipation section, then energy dissipation capacity is improved, but manufacturing cost and fabrication difficulty increase
Solution Approach 1:
The patent changes the material parameter from low-yield strength steel to ordinary steel, and compensates for the reduced energy dissipation capacity through geometric parameter changes (adding stiffeners, increasing web thickness) in the energy dissipation section to achieve the required seismic performance
Solution Approach 2:
The patent creates a composite structural system combining ordinary steel elastic segments with an ordinary steel energy dissipation section reinforced by stiffeners, achieving the performance of low-yield strength steel using commonly available materials
2Strength
If the cross-sectional area of elastic segments is increased, then lateral stiffness is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by making the elastic segments have a larger cross-sectional area than the energy dissipation section, concentrating the stiffness enhancement where needed while keeping the overall structure simple and avoiding unnecessary complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed damper design reduces production costs, simplifies assembly, and effectively improves the seismic resistance of buildings by delaying buckling and dissipating energy through repeated inelastic shear deformation.
Implementation Method 1
effectively dissipating energy through inelastic shear deformation
Implementation Method 2
delaying buckling
Implementation Method 3
maintaining elastic behavior in the elastic segments under seismic loads
Implementation Method 4
fabricated from H-shaped steel by cutting and welding
Data Source
AI summary
A steel panel damper is provided for reinforcing a building structure. The steel panel damper is disposed between a first member and an opposite second member arranged in the building structure. The steel panel damper comprises a first elastic segment, a second elastic segment, an energy dissipation segment, a first end plate, and a second end plate. In terms of the cross-sectional area perpendicular to the first direction, the first elastic segment and the second elastic segment are greater than the energy dissipation segment.