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Beam end constraint device used for earthquake-proof test

A restraint device and anti-seismic test technology, which is applied in the direction of measuring device, vibration test, machine/structural component test, etc., can solve problems affecting the accuracy of test results, etc., and achieve the effect of eliminating mutual influence and improving anti-seismic performance

Inactive Publication Date: 2014-07-23
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the space node exerts repeated force on the column end, the deformation and force of the two orthogonal directions affect each other. If the traditional planar joint test is still used to simulate the constraints of the beam end inflection point, the test results will be affected. accuracy

Method used

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  • Beam end constraint device used for earthquake-proof test
  • Beam end constraint device used for earthquake-proof test
  • Beam end constraint device used for earthquake-proof test

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] Such as figure 1 , figure 2 , image 3 and Figure 4 A specific embodiment is shown, which includes the first ring plate 1, the second ring plate 3 and the third ring plate 9 arranged in sequence from the outside to the inside and arranged coaxially, the first ring plate 1 and the second ring plate 3 Axial sliding connection, the second ring plate 3 and the third ring plate 9 are circumferentially sliding connected, the inner side of the third ring plate 9 is provided with a second horizontal displacement mechanism 8 whose moving direction is perpendicular to the axial direction of the third ring plate 9, the second The outer side of a ring plate 1 is fixed with a rotating shaft 11, and the rotating shaft 11 is connected with a reaction force mechanism. The reaction force mechanism includes a reaction force frame 12, and the reaction force frame 12 is provided with an anchoring structure. The anchor rod fixes the reaction force frame 12 with the ground or other fixt...

specific Embodiment 2

[0031] The difference between this specific embodiment and specific embodiment 1 is that the structure of the second horizontal displacement mechanism is the same as that of the first horizontal displacement mechanism, including guide rails, pulleys and pulley frames. The guiding direction is in the horizontal direction perpendicular to the axial direction of the third ring plate 9 . One of the guide rail and the pulley bracket is fixed on the rib 7, and the other is supported on the beam 14.

specific Embodiment 3

[0033] One difference between this specific embodiment and the specific embodiment is that the wing plate 6 and the rib plate 7 may or may not be present, and the second horizontal displacement mechanism is directly arranged on the third ring plate 9 . And there may be no balls between the second ring plate 3 and the third ring plate 9 .

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PUM

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Abstract

The invention discloses a beam end constraint device for an earthquake-proof test. The beam end constraint device comprises a first ring plate, a second ring plate and a third ring plate, wherein the first ring plate, the second ring plate and the third ring plate are sequentially arrayed from outside to inside in a coaxial mode. The first ring plate and the second ring plate are connected in the axial direction in a sliding mode. The second ring plate and the third ring plate are connected in the circumferential direction in a sliding mode. A second horizontal moving mechanism is arranged at the top and the bottom of the inner side of the third ring plate, and the moving direction of the second horizontal moving mechanism is perpendicular to the axial direction of the third ring plate. Rotary shafts are fixed to the outer side of the first ring plate and connected with counter-force mechanisms. Each counter-force mechanism comprises a counter-force rack, an anchoring structure is arranged on each counter-force rack, the rotary shafts are arranged on the counter-force racks around the axes of the rotary shafts, and the axes of the rotating shafts are located in the moving direction of the second horizontal moving mechanism. A beam can rotate around the axis of the beam, turn over in the vertical direction around the rotary shafts and move in the horizontal direction perpendicular to the axial direction of the beam and in the axial direction of the beam. The beam can not horizontally move in the vertical direction, and the beam end constraint device has freedom degrees in the multiple directions.

Description

technical field [0001] The invention relates to a beam end restraint device for an anti-seismic test. Background technique [0002] In existing beam-column planar joint tests, constraints are usually imposed on the upper and lower ends of the column, and low-cycle repeated loads are applied to the beam ends to study its seismic performance. In this loading mode the force is transferred from the beam to the column. [0003] my country is an earthquake-prone country, more than 80% of the cities are located in the earthquake zone, and the earthquake damage caused by the earthquake is becoming more and more serious. For engineering structures, it is inseparable from specific seismic performance tests to establish the theory of seismic design and to verify the calculation methods of some individual components. From the actual structure, taking the inflection point of the member as the boundary, selecting the corresponding beam-column joints and conducting the seismic performanc...

Claims

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Application Information

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IPC IPC(8): G01M7/02
Inventor 刘春阳陈杰徐艳华杨大彬
Owner SHANDONG JIANZHU UNIV