Three-Phase Foundation Damper for Earthquake Shear Force Control
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Solution Overview
Problem
Existing structures in earthquake-prone areas face challenges in resisting various types of shocks induced by seismic waves, leading to structural damage and collapse, necessitating a solution that effectively dissipates energy without relying on shear walls and incorporating dampers in the foundation using a three-phase damper system.
Innovation Solution
A three-phase damper system utilizing gas, liquid, and solid phases, controlled by a mechatronic controller, is installed in the foundation to absorb and convert earthquake energy into thermal energy, maintaining the structure's static state during dynamic changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional shear walls are used to resist earthquake forces, then structural strength is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent replaces traditional mechanical shear wall structures with a mechatronic control system consisting of sensors, controllers, and three-phase dampers. This substitution transforms passive structural resistance into active control, reducing device complexity while maintaining or improving structural strength through intelligent response to seismic forces.
Solution Approach 2:
The patent employs three-phase dampers utilizing hydraulic fluid and gas pressure mechanisms to dissipate earthquake energy. The hydraulic system provides controlled resistance forces, while the gas phase offers compressibility and energy absorption, collectively enhancing structural strength without requiring bulky mechanical shear walls.
2Ease of operation
If passive damping structures are used, then ease of operation is improved, but energy dissipation capability worsens
Solution Approach 1:
The patent implements a feedback control system where sensors detect structural response to earthquake forces, the controller processes this information, and the three-phase dampers adjust their damping characteristics in real-time. This active feedback mechanism maximizes energy dissipation capability while maintaining ease of operation through automated control.
Solution Approach 2:
The patent transitions from static passive damping to dynamic active damping by enabling the three-phase dampers to adapt their characteristics in real-time based on seismic conditions. The system dynamically adjusts hydraulic pressure and gas compression ratios to optimize energy dissipation throughout the earthquake event.
3Stability of the object's composition
If the foundation remains completely rigid, then stability is improved, but ability to dissipate earthquake energy worsens
Solution Approach 1:
The patent changes the physical parameters of the foundation system by introducing three-phase dampers that modify stiffness and damping characteristics. The hydraulic fluid provides variable resistance while the gas phase offers compressibility, allowing the foundation to dynamically adjust its parameters to both maintain stability and dissipate earthquake energy effectively.
Solution Approach 2:
The patent creates a composite foundation system combining rigid structural elements with three-phase damper components. The composite structure integrates the stability-providing rigid foundation with the energy-dissipating flexible damper elements, achieving both stability and energy dissipation simultaneously.
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 system effectively reduces structural forces and maintains stability by transforming seismic energy into thermal energy, preventing sudden movements and structural failure, while allowing for automatic operation and minimal post-earthquake inspection.
Implementation Method 1
A first piston (10) arranged in a first chamber (12) filled with a hydraulic fluid (16) and a second piston (5) arranged in a second chamber (7)
Implementation Method 2
A three-phase damper system utilizing gas, liquid, and solid phases, controlled by a mechatronic controller, is installed in the foundation to absorb and convert earthquake energy into thermal energy
Implementation Method 3
transforming seismic energy into thermal energy
Implementation Method 4
the vibration damper comprises a damper ring (2) that can be rotated in a damper housing (1) filled with a viscous medium relative thereto
Data Source
AI summary
The device and mechatronic control of earthquake is a three-phase damper in a two-layer foundation, with dampers placed under the pressure of hydraulic fluid and gas between two layers of the foundation, one under the structure and the other on the ground or piles. When an earthquake happens, it is feasible to transport the incompressible fluid between the dampers to prevent shear force failure.