Force measuring structure and calibration method for super-large vertical bearing device

Abstract

The invention provides a super-large vertical bearing device force measuring structure, which comprises a vertical bearing device, a plurality of force measuring sliding sheets and a plurality of pressure bearing sliding sheets, the vertical bearing device comprises an upper half part and a lower half part, the upper surface of the lower half part is a circle, the circle is uniformly divided into 4n fan-shaped areas about the circle center, n is a non-zero natural number, and the pressure bearing sliding sheets are arranged on the upper half part of the vertical bearing device. A fan-shaped pressure-bearing slip sheet which is consistent with the fan-shaped area in size is embedded in the fan-shaped area, a force-measuring slip sheet is arranged in the pressure-bearing slip sheet and is symmetrical about the circle center of the circle, and the pressure-bearing slip sheet, the force-measuring slip sheet and the bottom surface of the upper half part form a rotating friction pair; according to the invention, the force-measuring slip sheets are additionally arranged at the bottom of the super-large vertical bearing device, and the original arrangement mode of the internal pressure-bearing slip sheets is changed, so that static vertical force-measuring calibration can be completed on an existing tonnage testing machine.

Description

technical field [0001] The invention belongs to the technical field of bridge structures and buildings, and specifically relates to a force-measuring structure and a calibration method of a super-large vertical bearing device. Background technique [0002] Bridge bearings are the main force-transmitting components directly between the upper structure and the lower structure of the bridge. The change law of the force and strain parameters of the bearings can largely reflect the overall damage of the bridge. Therefore, strengthening the health monitoring of the bridge bearings is very important for evaluating the bridge Overall security plays an important role. As the industry pays more attention to the operating status and service life of bridges, the demand for bridge bearings with force-measuring functions is increasing for large bridges. In current force-measuring bearings, especially spherical bearings, there are two main methods for measuring vertical bearing capacity, ...

AI Technical Summary

Problems solved by technology

At present, the designed vertical bearing capacity of bridge supports can exceed 10,000 tons, and the designed vertical bearing capacity of bridge swivel joints has reached tens of thousands of tons, and then multiplied by a factor of 1.5 times, there is no matching super large tonnage testing machine to provide The vertical load has been calibrated, so how to calibrate the vertical bearing capacity measurement of super large vertical load-bearing devices has become a difficult problem in the industry

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