- Under the normal working conditions, the load force applied on the Squeezed Rheological Particulates Pot Bearing Damper is balanced by the internal pressure from the Squeezed Rheological Particulates;
- The load impact and vibration in the vertical direction is damped out by the elasticity and the damping from the Squeezed Rheological Particulates£»
- Under the braking condition from trains or cars on the bridges£¬the Squeezed Rheological Particulates Pot Bearing Damper is kept still within the 2D horizontal directions£»
- The Squeezed Rheological Particulates Pot Bearing Damper is kept moving under the designed earthquake excitation force to absorbing the earthquake energy and the shock, After the earthquake, the Squeezed Rheological Particulates Pot Bearing Damper would repositioned under the internal elastic energy stored during the earthquake excitation.
2¡¢The Experimental-scale Squeezed Rheological Particulates Pot Bearing Damper and Part of the Experimental Rig
3¡¢Dynamic Experimental Results of the Experimental-scale Squeezed Rheological Particulates Pot Bearing Damper
Experimental Conditions£º
1£©The Rig£ºHG2-0402 National Standard Experimental Rig for Automobile Dampers
2£©Experimental type£ºDynamic Test£»
3£©Excitation Wave£ºSine Wave£»
4£©Excitation Amplitude£º 5-10mm£»
5£©Excitation Velocity£º 0.085m/s .
4.Hysteresis Loops
1£©Lateral load pressure£º23.0Mpa; Excitation amplitude: ¡À5mm; Excitation velocity: 0.085m/s; Force filter£º20000N ; including self-centering elastomer.
2£©Lateral load pressure: 23.0MPa; Excitation amplitude : ¡À5mm; Excitation velocity : 0.085m/s; Force filter: 20000N; Without inclusion of self-centering elastomer.
3£©Lateral load pressure: 23.0MPa; Excitation amplitude: ¡À10mm; Excitation velocity: 0.085m/s; Force filter: 20000N; without inclusion of self-centering elastomer.
5¡¢ Analysis of the Experimental Results for the Experimental-scale Squeezed Rheological Particulates Pot Bearing Damper
Compared with the general bridge port bearing damper, the following characteristics are listed:
1£©¡¢Large Initial Strength and large Initial Resistance force near the Zero Position¡£
2£©¡¢The damping force enhances smoothly and steadily to filter the earthquake excitation force.
3£©¡¢Non-sensitive to the earthquake excitation force directions, within the 2D damping plane.
4£©¡¢Non-destroyable, after the designed earthquake excitation; Large damping and excitation energy absorbing capabilities; Returnable , with the help of the external excitation force, like the Lead Bar-Rubber Pot Bearings.
5£©¡¢The maximum displacement is rather large, within the damping plane, roughly the 70% of the dimension.
6£©¡¢Lead free, friendly to both the manufacturing engineering and the environment.
7£©¡¢Leakage free under 30MPa of internal pressure.
8£©¡¢Simple in the structure, low in manufacturing cost, long in the life expectancy, resistive to the environment conditions, non-sensitive to the application temperature.
9£©¡¢Load carrying capability is kept constant, regardless the movement within the damping plane.
10£©¡¢Characteristics from the original fixed pot bearing are kept, with the addition of much more features.
11£©¡¢Flexible in designing the hysteresis curves according to engineering requirements.
12£©¡¢Maintenance free; all the features are integrated together.
