Mechatronic Earthquake Control by a Three-Phase Damper in a Two-Layer Foundation

Abstract

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.

1 . 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, and it is made up of the following major components.
 a. Dampers that apply force on the upper layer's foundation under compressible and viscous fluid pressure.   b. Sensors for controlling the angle of any large beam or foundation, or anchor.   c. c. Mechatronic pressure controller and damper interconnection.   d. d. Modified foundation in two layers by placement beneath and top of the dampers.   e. e. Mechanical and electrical connections of the sensors and dampers to the central controller.   
     
     
         2 . According to declaration  1 , the damper device can absorb force and return with a controlled speed by utilizing two pressure forces of gas fluid and hydraulic liquid fluid. 
     
     
         3 . According to declaration  2 , the gas phase and liquid phase are used to maintain pressure and speed in the dampers between the two layers, and the solid diaphragm phase is employed in communication pipes to manage liquid exchange and, as a consequence, stability when no earthquake occurs. 
     
     
         4 . According to declaration  2 , the stability control method or entry into suspension during an earthquake via dampers connected to a mechatronic controller equipped with an acceleration and pressure sensor control processor is claimed. 
     
     
         5 . According to  claim 1 , the method of increasing the height of other dampers as a result of compression of one damper is claimed in accordance with the law of mixed containers. 
     
     
         6 . The use of an angle control sensor to warn or correct for leakage between foundations is claimed in declaration  1 . 
     
     
         7 . According to declaration  6 , compensation of point settlement of the foundation caused by soil density reduction by dampers is intended to prevent failure in the construction. 
     
     
         8 . The method of directing the commencement of an earthquake to the processor by sensing the pressure increase in a damper is claimed in declaration  1 . 
     
     
         9 . A mechatronic controller capable of maintaining stability in normal conditions and entering dynamic active control during an earthquake is claimed in declaration  1 . 
     
     
         10 . The employment of electric valves equipped with a compensator for the failure of the metal diaphragm is claimed in declaration  1 . 
     
     
         11 . Within the scope of the description and map of the declaration, declaration  10  claims a wholly mechanical suspension system independent of electronic devices capable of preserving the function in the event of a problem in the mechatronic controllers. 
     
     
         12 . According to declaration  1 , the foundation is divided into two levels, with the possibility of transferring structural force to the dampers and to the depth or surface of the ground in the lower layer of the dampers.