A Vibration Isolation Device for a Hanging Structure

Abstract

The invention discloses a vibration isolation device for a hanging structure, which is used for the connection between the main bridge and the hanging structure. Ear plate; the base is fixed on the main bridge, the outer cylinder is installed on the base, and the guide plate is fixed on the inner wall of the outer cylinder; the upper end of the piston-type guide rod is a wide cylinder, and its outermost surface is fitted with the guide plate; the piston-type guide rod The lower end protrudes from the outer cylinder and is connected with the ear plate; the ear plate is used to connect the suspender protruding from the hanging structure; the first elastic element is installed between the lower side of the wide column of the guide rod and the bottom surface inside the outer cylinder; the second elastic element is installed on the Between the wide cylinder at the upper end of the piston-type guide rod and the guide plate; the damping material is filled in the cavity surrounded by the bottom surface of the outer cylinder, the inner surface of the guide plate and the guide rod. The invention can effectively reduce the forced vibration of the main bridge to the hanging structure in the mechanical non-layered bridge, improve the comfort of the human non-layered system, and can reduce vibration and energy absorption for the whole structure.

Description

technical field [0001] The invention relates to the field of bridge engineering vibration control, in particular to a vibration isolation device for a hanging structure. Background technique [0002] The machine-non-layered bridge is a new type of multi-purpose bridge developed in recent years to alleviate the problem of long-distance climbing on the bridge by non-motor vehicles and the problem of mixed traffic between machines and non-motor vehicles. Human non-systematic structural form. Different from the general non-human system, the suspension structure of the non-layered bridge is double excited by the pedestrian load and the forced vibration of the main bridge. Existing studies have shown that the peak value of the vehicle-induced vertical vibration acceleration transmitted by the main bridge can reach more than 50% of the peak value of the vertical acceleration caused by the pedestrian load excitation alone. Exceeding the footbridge comfort thresholds set in existin...

AI Technical Summary

Problems solved by technology

Existing studies have shown that the peak value of the vehicle-induced vertical vibration acceleration transmitted by the main bridge can reach more than 50% of the peak value of the vertical acceleration caused by the pedestrian load excitation alone. Exceeds footbridge comfort thresholds set in existing standards, creating comfort issues

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