Open type sinking air floatation platform overhead floor overhanging vibration damping system

Abstract

The invention provides an open type sinking air floatation platform overhead floor overhanging vibration damping system. The system comprises a vibration isolation platform (2) providing a support plane for upper equipment (1), a plurality of air spring vibration isolators (3) arranged below the vibration isolation platform (2), an overhead floor (4) in which a vibration isolation joint is left onthe side surface of the vibration isolation platform (2) and a gap is left on the top surface of a vibration isolation foundation of an air floatation platform and isolated from the air floatation platform and independent of each other, a supporting main steel beam (5) which is an overhanging type section steel member and used for supporting a supporting secondary steel beam (6) and the overheadfloor (4), the supporting secondary steel beam (6) which is a steel member, connected with the overhead floor (4) and used for supporting the overhead floor (4), and a concrete terrace (7) which is formed by indoor and outdoor terraces around the vibration isolation platform (2) and serves as an anchoring section for the supporting main steel beam (5), wherein one section of the supporting main steel beam (5) is anchored into the concrete terrace (7), so that a supporting structure formed by the overhead floor (4) is completely isolated from the air floatation vibration isolation platform.

Description

technical field [0001] The invention relates to and is applied to the technical field of engineering vibration and vibration reduction, in particular to a cantilevered vibration reduction system for a raised floor of an open sunken air-floating platform. Background technique [0002] At present, the support structure of the raised floor of the traditional open sunken air flotation platform is directly arranged on the upper part of the air flotation platform. Such a structure has the following defects: [0003] 1. The vibration isolation effect of the air flotation vibration isolation system is seriously disturbed by external vibration. In the traditional scheme, the supporting structure of the raised floor is directly set on the foundation of the air flotation platform, and the external vibration on the upper part of the raised floor is directly transmitted to the top surface of the vibration isolation foundation through the supporting member of the raised floor. The transmi...

AI Technical Summary

Problems solved by technology

In the traditional scheme, the supporting structure of the raised floor is directly set on the foundation of the air flotation platform, and the external vibration on the upper part of the raised floor is directly transmitted to the top surface of the vibration isolation foundation through the supporting member of the raised floor. The transmission path of the external disturbance vibration is short, which seriously affects the air flotation vibration isolation system. The vibration isolation performance affects the performance of the vibration isolation system

[0004] 2. Strict construction sequence and long construction period

The construction of the vibration isolation platform and the raised floor in the traditional scheme has overlapping and crossing of the working interface, and the construction needs to be carried out in strict accordance with the order of building the air floating platform first and then the raised floor, and the construction cannot be carried out simultaneously, which increases the difficulty of construction, prolongs the construction period, and increases construction cost

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