Freely-adjustable low-cycle cyclic load test loading frame

Abstract

The invention discloses a freely-adjustable low-cycle cyclic load test loading frame. A pair of portal frames and a pair of vertical rail columns are vertically arranged on a base; a first elevator isfixed on an upper cross beam at the top part of each portal frame; the lower end of each first elevator is connected with the two ends of a horizontal track beam; a longitudinal actuator mounted on the horizontal track beam is controlled to move up and down; the horizontal track beam is fixed with or separated from the portal frames by means of bolt pins; a second elevator is installed on a fixedcross beam at the upper ends of the pair of vertical rail columns; the lower end of the second elevator is connected with a movable cross beam provided with a transverse actuator; the movable cross beam is fixed to or separated from the vertical rail columns by means of pin bolts; and a transverse supporting frame is fixedly connected with the vertical rail columns and the portal frames on the same side by means of profile steel at the same time. The freely-adjustable low-cycle cyclic load test loading frame is convenient in operation, solves the problems of difficult up-down and left-right movement and replacement of the actuator, realizes the electric and free adjustment of the actuator, reduces the use of large hoisting equipment and greatly improves the test efficiency.

Description

technical field [0001] The invention belongs to the technical field of energy dissipation and shock absorption test equipment for building structures, and relates to a low cycle repeated load test loading frame, in particular to a freely adjustable low cycle repeated load test loading frame. Background technique [0002] The seismic performance of structures has always been a focus of attention. Currently, the most mainstream and widely used structural seismic performance test is the low-cycle repeated load test. The low-cycle repeated load test refers to the static test that applies multiple reciprocating cycles to the structure or structural components. It is the process of repeatedly loading and unloading the structure or structural components in both positive and negative directions. Stress characteristics and deformation characteristics in reciprocating vibration. It adopts a certain load control or displacement control to carry out low-cycle repeated cycle loading met...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of difficulty in adjusting the position of the actuator in the traditional low-cycle repeated load test frame, the present invention provides a freely adjustable low-cycle repeated load test loading frame. The first hoist and the second hoist respectively control the horizontal track The up and down movement of the beam and the movable beam makes the longitudinal actuator and the lateral actuator move up and down adaptively, and at the same time, the longitudinal actuator can move adaptively left and right on the horizontal track beam, thus realizing low cycle repeated load The free adjustment of the test loading frame is suitable for the loading of test pieces of different specifications, without the need to use large machinery for disassembly and installation, saving a lot of manpower and material resources, and effectively improving work efficiency

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