Metal rubber support connecting device

Abstract

The invention discloses a metal rubber support connecting device, and particularly relates to a connecting mode of a metal rubber support in a compression-shear test. The device is mainly composed ofan upper connecting plate, an upper limiting plate, a lower connecting plate, a lower limiting plate, spines and bolts. The device is characterized in that the spines are anchored with the upper connecting plate through a plurality of holes in the upper connecting plate, then the upper connecting plate and the upper limiting plate are connected with a horizontal movable sliding plate of the test platform into a whole through bolts, and similarly, the spines are anchored with the lower connecting plate through a plurality of holes in the lower connecting plate. And the lower connecting plate and the lower limiting plate are integrated with the test platform base through bolts. During a test, the metal rubber support is clamped in a circular hole in the center of the upper limiting plate andthe lower limiting plate, after vertical force is applied, the spines pierce into the support, friction force between the support and the connecting plate is increased, and due to the limiting effectof the limiting plates on the support, the support and the test platform do not slip after horizontal force is applied. Therefore, the problem of slippage between the metal rubber support and the test platform in the compression-shear test is solved. The device has the advantages that the mechanical property of the metal rubber support is accurately obtained under the condition that the metal rubber support body is not damaged; and components are simple in structure, easy to manufacture, convenient to install, small in installation error and capable of being repeatedly used.

Description

technical field [0001] The invention belongs to the technical field of support compression-shear tests, and in particular relates to a connection device for metal-rubber supports during compression-shear tests. Background technique [0002] The support of the bridge is an important force-transmitting component of the bridge. It can connect the upper structure and the lower structure together, transmit the dead load and live load of the upper structure to the lower structure, and can adapt to the temperature change of the main girder. Concrete shrinkage and creep as well as some deformation under live load braking force. Chinese patent CN107288031A proposes a highway bridge support. When studying its mechanical properties, especially the shear properties, it is necessary to place the support on a test platform for compression shearing to obtain the mechanical properties. The principle of the bearing compression-shear test is to place the bearing on the compression-shear test...

AI Technical Summary

Problems solved by technology

Since the texture of the support proposed in the Chinese patent CN107288031A is metal rubber, and the test platform is generally assembled from high-strength steel plates, the friction coefficient between the metal rubber and the steel plate is very small, making the support easy to slip during the shearing process. shift, resulting in a sudden change in shear displacement and the inability to obtain accurate mechanical properties

A support connection device proposed by Chinese patent CN204455808U, although it can solve the sliding of the support during use and the fracture of the support plate, the connection device limits the vertical displacement of the support and cannot adapt to the metal rubber support A change in compressive stress in a shear test results in a change in vertical displacement of

The support connecting device proposed by Chinese patent CN203113225U can only adjust the relative position of the upper and lower connecting plates of the support, but cannot solve the problem of slippage between the support and the upper and lower connecting plates in the shear test of the metal rubber bearing

The support connection device proposed by Chinese patent CN202482996U can solve the slippage problem between the support and the connecting plate well, but the way of fixing the support is bolt limit, if it is applied to the connection of metal rubber support , will lead to irreversible deformation of the bearing and the limit bolt in the shear test, destroying the structure of the bearing body, so it is not suitable for the connection of metal rubber bearings

In view of the special material of the metal rubber bearing, there is no suitable support connection device to match it at present, so it is necessary to invent a support connection device to solve the problem of slippage between the support and the test platform during the shear test of the metal rubber bearing. question

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