Multifunctional test platform for bridge pier buffer vibration isolation based on intelligent magnetic control rubber bearing

Abstract

The invention relates to a pier buffering and vibration isolating type multifunctional test platform based on an intelligent magnetic rubber supporting seat. The test platform comprises a bridge floor impact load simulating generator, a bridge floor simulating platform, an intelligent magnetic rubber supporting seat, a pier simulating body, a base vibrating platform, a displacement sensor, an acceleration sensor, a strain gage, a controller and a driving power supply. According to the platform, the position and direction of the supporting seat can be adjusted to simulate a multi-degree-of-freedom buffering vibration isolating system composed of beams, the supporting seat and a pier of the bridge; a bridge floor impact exciting simulating generator is used for driving the bridge floor simulating platform to act in a plurality of directions to simulate the impact load of a bridge floor in different directions and at different positions; the base vibrating platform is used for driving the pier simulating body to vibrate in a plurality of directions so as to simulate different earthquake excitations; the sensor, the intelligent magnetic rubber supporting seat and a measuring control and evaluation device are combined to acquire various impact load data; the controller is used for calculating and adjusting to adaptively change the rigidity, dampness and other parameters of the intelligent magnetic rubber supporting seats. The test platform aims at reducing the displacement of the bridge floor simulating platform as well as reducing the vibration of the whole platform; the buffering and vibration isolating system is tested, controlled and evaluated.

Description

technical field [0001] The invention relates to a bridge impact protection test platform, in particular to a bridge pier buffer vibration isolation multifunctional test platform based on intelligent magnetically controlled rubber bearings. Background technique [0002] Bridges are an important part of the traffic lifeline. However, when they are in service and faced with the threat of large loads such as vehicle overload and collision, ship crashing into bridge piers, earthquakes, and explosions, they often generate large impact damage and displacement at beams and piers. If it is light, it will cause damage to the pier beam structure, and if it is serious, it will cause collapse, which will bring harm to people's lives and property and the development of the national economy. At present, in order to improve the vibration isolation and buffering capacity of bridge piers, passive bearings (such as steel bearings, rubber bearings, special seismic bearings, etc.) The vertical ...

AI Technical Summary

Problems solved by technology

However, the problem is that if the actual bridge is used to study its buffer vibration isolation and structural protection, it will not only cost a lot, but also the test operation is very difficult, and it is difficult to realize

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