Apparatus for continuous collapse dynamic test of steel frame

A dynamic test, steel frame technology, used in measuring devices, testing of machine/structural components, instruments, etc., can solve problems such as laboratory damage and slow movement of the loading part, and achieve the effect of strong destructiveness and low site requirements

Active Publication Date: 2017-03-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is a jack that controls displacement or force, the movement speed of the loading part is very slow.
In the collapse dynamic test, the acceleration of the specimen may reach close to 1g, which cannot be satisfied by ordinary loading methods.
At the same time, the dynamic test may cause various uncertain damages to the laboratory due to its destructiveness.

Method used

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  • Apparatus for continuous collapse dynamic test of steel frame
  • Apparatus for continuous collapse dynamic test of steel frame
  • Apparatus for continuous collapse dynamic test of steel frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as Image 6 As shown in Fig. 1, a steel frame continuous collapse dynamic test set is carried out, and the experiment conducted is a slab-column structure experiment. The foundation part does not contain short foundation steel beams 6 without additional stiffeners. During installation, first fix the vertical lead screw 7 at the corresponding required position of the hoisted foundation steel beams 1, 2, 5, then place the foundation steel beams 1, 2, 5 on the test site, place the foundation steel beams 1, 2 , 5. Lift the upper foundation steel beams 3, 4 and fix them with a vertical screw 7. Horizontal lead screw 8 is installed on foundation steel beam side. Hoist the test piece to the foundation part 0-1, and fix it with the vertical screw 7. Install the vertical support screw 13 to the predetermined bearing position 9, screw in the nut to the predetermined position of the vertical support screw 13, first hoist all the lower solid steel blocks 14, and hoist the s...

Embodiment 2

[0053] Such as Figure 7As shown in Fig. 1, a steel frame continuous collapse dynamic test set is carried out, and the experiment conducted is a slab-column structure experiment. The foundation part does not contain the horizontal lead screw 8 . During installation, first fix the vertical lead screw 7 at the corresponding required position of the hoisted foundation steel beams 3, 4, 5, 6, then place the foundation steel beams 3, 4, 5, 6 on the test site, The upper parts of the beams 3, 4, 5, and 6 are hoisted to the upper foundation steel beams 1, 2, and fixed with a vertical screw 7. Hoist the test piece to the foundation part 0-1, and fix it with the vertical screw 7. Install the vertical support screw 13 to the predetermined bearing position 9, screw the nut to the predetermined position of the vertical support screw 13, first hoist all the lower solid steel blocks 14, and hoist the steel hanging beam 15 to the lower solid steel block 14, All upper solid steel blocks 14 ...

Embodiment 3

[0056] Such as Figure 8 As shown in Fig. 1, a steel frame continuous collapse dynamic test set is carried out, and the experiment conducted is a slab-column structure experiment. The foundation part does not include short foundation steel beams 5, 6 without additional stiffeners. During installation, first fix the vertical lead screw 7 at the corresponding required position of the hoisted foundation steel beams 1, 2, 3, and 4, then place the foundation steel beams 1, 2, 3, and 4 on the test site, Horizontal lead screw 8 is installed on beam 1,2,3,4 side. Hoist the test piece to the foundation part 0-1, and fix it with the vertical screw 7. Install the vertical support screw 13 to the predetermined bearing position 9, screw the nut to the predetermined position of the vertical support screw 13, first hoist all the lower solid steel blocks 14, and hoist the steel hanging beam 15 to the lower solid steel block 14, All upper solid steel blocks 14 are hoisted on the steel suspe...

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Abstract

The invention, which belongs to the field of prevention and reduction of natural disasters of architectural structures, provides an apparatus for a continuous collapse dynamic test of a steel frame. In the collapse dynamic test, the acceleration speed of a test piece may reach 1g, which the common loading way can not reach. The apparatus comprises a foundation part, a suspension part, a releasing part, and a loading part. The foundation part includes a foundation girder, a plurality of vertical lead screws, and a plurality of horizontal lead screws. The suspension part consists of eight solid iron blocks, a steel suspension girder, and eight vertical support lead screw. The releasing part includes a jack and a releasable lifting hook; the releasable lifting hook includes a steel plate, a latch, and a shackle. Besides, the loading part is formed by an intermediate connecting device and a weight box. Meanwhile, during the dynamic test, various uncertain damages of a laboratory may be caused due to destructiveness; however, the apparatus provided by the invention can be applied an outdoor test, so that the destructiveness can be minimized. The test boundary condition requirement can be met. Assembling and transportation become convenient; and instantaneous loading can be realized.

Description

technical field [0001] The invention relates to a steel frame continuous collapse dynamic test device, which can be used for various dynamic tests outdoors, thereby avoiding damage to the laboratory ground and the overall structure of the laboratory caused by the test, and belongs to the field of disaster prevention and mitigation of building structures. Background technique [0002] Continuous collapse refers to the large-scale collapse of the structural system caused by the local small-scale initial damage in the structural system. This domino-like chain reaction will lead to serious damage to the structure and even the collapse of the entire structure, resulting in a large number of people. Casualties and property losses, so the design of the structure's anti-successive collapse performance is very important. Structural anti-continuous to structural anti-progressive collapse performance is the ability of the overall structural system to resist local damage, in order to de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/007
Inventor 肖宇哲李易黄文君闫维明
Owner BEIJING UNIV OF TECH
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