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A kind of shear force measuring device and measuring method

A measurement method and quantitative technology, applied in the measurement of the elastic deformation force of the measurement gauge, etc., can solve the problems that cannot meet the needs of structural tests, large test volume, etc., and achieve simple structure, simple production process, and robustness strong effect

Active Publication Date: 2017-06-30
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Today, the test volume of civil engineering structures is getting larger and larger, and the range of ordinary measuring devices can no longer meet the needs of structural tests.
In structural tests, it is often necessary to consider the performance of components bearing both pressure and shear, but existing measurement equipment is difficult to meet this requirement, so it is necessary to develop a new type of large-range shear force measurement device

Method used

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  • A kind of shear force measuring device and measuring method
  • A kind of shear force measuring device and measuring method
  • A kind of shear force measuring device and measuring method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The structure of the shear force measuring device is as follows: figure 1 As shown, the structural form of deformable steel plate is adopted.

[0035] A plurality of deformable steel plates 1021 arranged parallel to each other are fixed between the upper connecting plate 1011 and the lower connecting plate 1012, and the fixing methods can be welding, bonding, thermal matching, etc.; the deformable steel plates 1021 are made of Q345 steel. Two strain gauges 1032 are pasted on both sides of one deformable steel plate 1021 . The two strain gauges on the same side are in the same position in the vertical direction, and the two strain gauges on the opposite side are symmetrical to the deformable steel plate.

[0036] figure 2 Schematic diagram of the shear force measuring device. Taking the one-way shear force measuring device using deformable steel plate as an example, the working principle of the damper is explained.

[0037] Assume that the strains measured by the tw...

Embodiment 2

[0041] The structure of the shear force measuring device is as follows: image 3 and Figure 4 As shown, the structural form of deformable steel column is used for bidirectional shear force measurement.

[0042] A plurality of deformable steel columns 1022 are fixed between the upper connecting plate 1011 and the lower connecting plate 1012, arranged in a rectangular array. The deformable steel column 1022 is made of Q345 steel, and its section is square. On the four sides of one of the deformable steel columns 1022, two strain gauges 1032 are pasted vertically. The positions of the strain gauges on the two opposite faces of the deformable steel column are symmetrical to each other.

[0043] Taking the four strain gauges on the two opposite surfaces as an example, the strains measured by the two symmetrical shear strain gauges on the lower part are ε 1 and ε 2 , and the strains measured by the two symmetrical shear strain gauges on the upper part are ε 3 and ε 4 , and ε...

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Abstract

The invention relates to a novel shear force measuring device and measuring method, and belongs to the technical field of testing of a civil engineering structure. The device comprises an upper connection plate and a lower connection plate; the upper connection plate and the lower connection plate are connected by a plurality of deformable steel plates or a plurality of deformable steel pillars; a group of shear force strain gauges are arranged on any deformable steel plate or deformable steel pillar. When the deformable steel plate structure is used, four shear force strain gauges are distributed at intervals in the vertical direction, are pasted symmetrically on two sides of the deformable steel plates, and can measure the mono-directional strain of the surfaces of the deformable steel plates at a fixed position. When the deformable steel pillar structure is used, 4-8 shear force strain gauges are distributed at intervals in the vertical direction and pasted bonded symmetrically on two opposite sides or four surfaces of the deformable steel pillars for measuring the mono-directional strain or bi-directional strain of the surfaces of the deformable steel pillars. The shear force measuring device has higher-tonnage measuring capacity, high precision, high robustness and bi-directional measuring capacity.

Description

technical field [0001] The invention relates to a shear force measuring device and a measuring method, belonging to the technical field of civil engineering structure tests. Background technique [0002] Today, the test volume of civil engineering structures is getting larger and larger, and the range of ordinary measuring devices can no longer meet the needs of structural tests. In structural tests, it is often necessary to consider the performance of components bearing both pressure and shear, but existing measurement equipment is difficult to meet this requirement, so it is necessary to develop a new type of large-range shear force measurement device. Contents of the invention [0003] Aiming at avoiding the existing shortcomings of traditional shear force measuring devices to a certain extent, the present invention provides a new type of shear force measuring device with simple structure, convenient processing and large bearing capacity, which can greatly improve the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/04
Inventor 潘鹏赵蒙怀冯鹏刘亮邓开来
Owner TSINGHUA UNIV