Lead core damping basin rubber bearing and its damping method

Abstract

The invention provides a lead-core damping pot rubber bearing. The rubber bearing comprises a base pot transversely arranged, a rubber pad arranged in the base pot, a piston placed on the rubber pad and extending out of the base pot, and an upper bearing plate placed on the piston, wherein the piston is shaped like a Chinese character 'ao' with an opening facing upward, the upper bearing plate is inserted into the upward-facing opening of the piston and extends out of the piston, the upper bearing plate and the piston are fixed through a shear-resistant pin vertically arranged, a round seismic displacement trough is formed between the upper bearing plate and an internal lateral surface of the piston in a spaced mode, a torus rubber piece is clamped between an internal lateral wall of the base pot and the piston, a reserved cavity is formed between the upper bearing plate and the piston, the reserved cavity is internally provided with a lead-core damping rod which is vertically arranged, the top end of the lead-core damping rod is embedded in the upper bearing plate, the bottom end is embedded in the piston, and a circumferential deformation space is formed between the central part of the lead-core damping rod and the lateral walls of the reserved cavity. According to the rubber bearing, a damping component is arranged inside the bearing, the damping and energy-dissipation effects of the bearing are good, and the structure of the bearing is compact. The invention further provides a method of damping the rubber bearing of the lead-core damping pot.

Description

technical field [0001] The invention relates to a lead-core damping pot rubber bearing and a damping method thereof. The damping rod is arranged in the inner structure of the inner base to enhance the transverse damping characteristic of the bearing and achieve the purpose of vibration reduction, which belongs to bridge engineering vibration reduction technology field. Background technique [0002] In the existing pot bearings, ordinary pot bearings use rubber pads placed in the bottom basin to bear the vertical load and meet the requirements of the corners required during the use of the bridge, while ordinary rubber is usually used, and its Damping is very low. For slidable pot bearings, use shear pins between the piston and the upper bearing plate to increase the horizontal stiffness of the bearing. In the case of normal use or E1 earthquakes (often encountered earthquakes), the shear pins The shear force keeps the structure of the support stable. In the event of an E2 ...

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Problems solved by technology

However, a prominent problem of this type of structure is that since the steel damping elements are distributed around the basin-type support, this significantly increases the plane size of the upper and lower bottom plates of the support, which is not conducive to miniaturization. To adapt, it is necessary to increase the size of the cover beam, leading to the installation of the support has high requirements for the assembly of the cover beam and pier column, which affects the popularization and practicality of the support

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