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Tool type masonry flexural strength test lateral loading device

A technology of lateral loading and bending strength, which is applied in the direction of measuring devices, strength characteristics, and the use of stable bending force to test the strength of materials, etc., can solve the problems of similar patent applications that have not yet been published, and achieve accurate and reliable detection data. The effect of convenient loading control and flexible disassembly

Active Publication Date: 2019-11-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching, the State Intellectual Property Office has not yet published a similar patent or has a similar patent application

Method used

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  • Tool type masonry flexural strength test lateral loading device
  • Tool type masonry flexural strength test lateral loading device
  • Tool type masonry flexural strength test lateral loading device

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, in order to measure the bending strength of the masonry through-joint standard test piece 4, this embodiment utilizes a group of steel reaction frames and a screw jack 1 with a steel tie rod 9 and an S-type tension sensor 8 to realize vertical placement. Lateral loading of the joint-through bending specimen 4. Among them, the screw jack 1 can apply tension, the S-type tension sensor 8 attached to the screw jack 1 is connected to the steel pull rod 9, the S-type tension sensor 8 is connected to the tension collector 7 with a cable 6, and the tension value measured by the test is determined by the tension Collector 7 directly displays and records. Such as figure 2 , 3 As shown, the steel reaction frame is composed of two distribution beams with different lengths, including a mouth-shaped distribution beam 3 and an I-shaped distribution beam 5, which are respectively placed on both sides of the joint-through bending test piece 4 during the te...

Embodiment 2

[0039] The loading device provided by this embodiment is the same as that of Embodiment 1, the difference is that:

[0040] Such as Figure 4 , 5 , 6, test the flexural specimen 12 of the tooth gap. In the laboratory, in order to measure the bending tensile strength of the masonry specimen along the tooth gap, i.e. the tooth gap flexural strength, the present embodiment can be used according to the following steps:

[0041] (1) According to Figure 4 , place the tooth gap bending test piece 12 on a smooth level ground;

[0042] (2) Drill a through hole in the center of the middle layer of bricks in the vertically placed tooth seam bending test piece 12 (the casing can also be embedded in the hole when the masonry test piece is built), and the diameter of the through hole is smaller than that of the steel tie rod 9 2mm larger in diameter;

[0043] (3) Reaction frames are installed on both sides of the tooth seam bending test piece 12, and the steel tie rods 9 pass through ...

Embodiment 3

[0048] The loading device provided by this embodiment is the same as that of Embodiment 1, the difference is that:

[0049] Such as Figure 7 As shown, in the masonry building site, the through-joint flexural strength of the existing wall materials is measured.

[0050] In this embodiment, the on-site sampling detection of the flexural strength of the masonry joint can be completed according to the following steps:

[0051] (1) On the brick wall 14 of a brick-concrete structure house, select the wall under the window under the window hole 13 and the vertical pressure is zero as the measurement area, that is, the joint bending strength measurement area 16, the length of the wall section (b) and The height (h) is greater than 900mm;

[0052] (2) According to Figure 7 , Drill a through hole at the drilling position 15 at a height of 450mm from the top of the wall in the middle of the wall section, the center of the through hole is located in the center of the brick, and the d...

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Abstract

The invention relates to civil engineering surveying instruments, and especially relates to a tool type masonry flexure strength test lateral loading device including counter force frames and a loading system, the loading system is used for loading of a masonry specimen placed between the counter force frames, so that the masonry specimen is subjected to a bending moment between the counter force frames, and a loading value is collected; the counter force frames include a long distribution beam and a short distribution beam, the loading system comprises a jack, a pulling rod, a pulling force sensor and a pulling force collector, the jack is connected with the pulling rod, the pulling rod passes through the short distribution beam, the masonry specimen and the long distribution beam in turn, a load is loaded onto the masonry specimen by shaking the jack by a hand via the pulling rod, and the loading value measured by the pulling force sensor is displayed and recorded by the pulling force collector. Compared with the prior art, the tool type masonry flexure strength test lateral loading device is simple in structure, repeatable to use and movable, detecting data is accurate and reliable, and the need of laboratory and field testing of masonry flexure strength can be met.

Description

technical field [0001] The invention relates to a civil engineering measuring instrument, in particular to a tool type masonry bending strength test lateral loading device. Background technique [0002] With the development of urban construction, my country's basic construction has entered the stage of new construction and renovation and maintenance. The flexural strength of masonry materials has become a key index for the evaluation of the seismic performance of masonry structures and the analysis and research of the mechanical performance of specimens. According to the national standard "Standard for Test Methods of Basic Mechanical Properties of Masonry" GBJ129, the current bending strength test of masonry adopts the loading method that the specimens are erected during construction and the specimens are laid flat during the test. This not only increases the difficulty of the test, but also needs to consider the influence of the self-weight of the specimen on the strength....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/20G01N3/02
CPCG01N3/02G01N3/20G01N2203/0023G01N2203/0037
Inventor 李翔顾祥林侯永俊蒲春来
Owner TONGJI UNIV
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