Planar frame joint loading and joint region shear deformation measuring device

Abstract

The invention provides a planar frame joint loading and joint region shear deformation measuring device. The planar frame joint loading and joint region shear deformation measuring device comprises an axial self-balancing reaction frame, a horizontal loading reaction frame and two-force pole supporting frames. An axial force is applied to a joint test-piece through the axial self-balancing reaction frame until the axial force achieves a preset value; the two-force pole supporting frames are symmetrically arranged at two ends of the cross beam of the joint test-piece and are hingedly connected with the cross beam and support the cross beam firmly; and the horizontal loading reaction frame, adopted as a loading device, provides a lateral loading force for the joint test-piece, so that the joint test-piece can go through shear deformation. According to the planar frame joint loading and the joint region shear deformation measuring device of the invention, the axial force is applied through a self-balancing manner, so that error caused by the application of a large axial force by adopting a traditional joint device or an MTS or a jack can be eliminated. Compared with a traditional joint loading device, the planar frame joint loading and joint region shear deformation measuring device has the advantages of easier implementation, convenience in the control of column end loading, high test precision and small occupied space, and can be used for performance testing of joints in a plane and edge joints, and is especially applicable to seismic performance testing of various kinds of joints of planar frames.

Description

technical field [0001] The invention belongs to the technical field of engineering, and in particular relates to a device for measuring node loading and node area shear deformation of a plane frame. Background technique [0002] There are three traditional planar frame joint loading devices. One uses a sliding device to apply axial force on the top of the column. This device is relatively complicated and cannot avoid the error of increasing horizontal friction. The error is more serious when the axial pressure is relatively large. The second is to use a jack to load the beam end. When this device uses two jacks to load at the same time, the cooperative control between the jacks is difficult. The third is to replace the sliding device with the axial force of the first device with an MTS or a jack, and achieve horizontal deformation through the length and hinge of the MTS or jack, which will lead to uncertainty in the horizontal load and cannot guarantee the vertical deformati...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the traditional nodal loading device is complex and will produce a large error when a large axial force is applied

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