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Reaction frame for self-balanced loading

A reaction force frame and self-balancing technology, which is applied in measuring devices, instruments, vibration testing and other directions, can solve problems such as space loading difficulties, and achieve the effect of solving difficult loading and clear force conditions.

Inactive Publication Date: 2009-09-09
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many bolt holes on the frame, which can easily fix the test piece and install the jack, realize multi-directional loading, and effectively solve the problem that the previous reaction frame is difficult to load in space

Method used

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  • Reaction frame for self-balanced loading
  • Reaction frame for self-balanced loading
  • Reaction frame for self-balanced loading

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Embodiment Construction

[0024] Such as figure 1 As shown, the self-balancing loading reaction frame includes a beam 1, a column 2 and an octagonal node 3. Beam 1 and column 2 are connected to each other by welding, such as image 3 , 4 shown. The beam 1 and the octagonal node 3 are connected by bolts, and there are three bolt connection positions, two at the upper and lower flanges of the beam, and one at the web, such as Figure 7 shown.

[0025] Both the beam 1 and the column 2 are made of H-shaped steel, and the beam and the column can be partially strengthened by stiffeners at the place where the reaction force is assumed during loading. The octagonal node 3 includes an octagonal steel plate 6, a circular tube 7 and a stiffener 8, such as Figure 4 shown. The upper and lower steel plates of the octagonal joint are welded to the upper and lower sides of the round pipe respectively, and stiffeners are evenly arranged on the bisection line of each side of the octagonal steel plate, and the upp...

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Abstract

The invention discloses a reaction frame for self-balanced loading. The reaction frame consists of a cross beam, an upright post and an octagonal node. Both the cross beam and the upright post are made of H-shaped steel and mutually connected by welding. The octagonal node consists of a circular tube, two steel plates and eight stiffening ribs. The two steel plates are welded at upside and underside of the circular tube respectively, and the eight stiffening ribs are evenly distributed on an equinoctial line of each edge of the octagonal steel plates and connected with the upper steel plate and the lower steel plate together by welding. The cross beam is mutually connected with the middle octagonal node by a bolt so as to form the reaction frame for self-balanced loading. The reaction frame has the advantages that the structure can achieve multi-direction loading; a self-balanced stress system is constructed during loading; and the reaction frame has little action on a test bench, is convenient to fix and simple to assemble and disassemble, has low requirement on sites, and is particularly suitable for bearing capacity test of large-size and large-load test pieces.

Description

technical field [0001] The invention relates to a self-balancing loading reaction frame, in particular to a self-balancing loading reaction frame for applying multi-directional loads to test pieces in building structure tests. Background technique [0002] In the process of scientific research and engineering application of building structures, the analysis and calculation theories of many complex structures need to be verified and revealed by the regression of test data of full-scale or large-scale specimens. For such larger specimens, the yield and failure loads are relatively large, and there must be a loading frame sufficient to bear the load during the loading process. The reaction frame has a long history as an early facility for applying horizontal loads. Later, various countries improved it, represented by the Japanese construction and research type reaction frame. It is simple and practical, and is especially suitable for the study of frame columns and masonry walls...

Claims

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Application Information

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IPC IPC(8): G01M19/00G01M7/02G01M99/00
Inventor 陈志华王大伟荣彬刘红波
Owner TIANJIN UNIV
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