Dynamic sounding device

A dynamic penetration and probe technology, which is used in the application of repetitive force/pulse force to test the strength of materials, etc., can solve the problems of time-consuming and labor-intensive, undisturbed soil disturbance, inapplicability, etc., to increase the adaptability range and improve the accuracy. performance, improve stability

Inactive Publication Date: 2011-04-13
HUAQIAO UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

Traditional subgrade bearing capacity test methods, such as California Bearing Ratio Test (CBR) and Platts Penetrator Test (PPT), have certain limitations. The former needs to take out the subgrade soil from its original position and put it into the CBR test device , which will inevitably cause disturbance to the undisturbed soil, and is time-consuming and labor-intensive; for PPT, when the strength of the roadbed is high, it is sometimes difficult to penetrate by manpower alone, and this method will not be applicable to coarse-grained soil

Method used

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Embodiment Construction

[0027] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0028] Such as figure 1 As shown, the power penetrating device of the present invention includes a tripod 10 and a probe rod device 20 .

[0029] Tripod bracket 10 such as figure 2 As shown, the three legs 11 are made of steel pipes, the tops are connected by bolts, and can be folded together; the bottom of the legs 11 is tapered, and the lower end is marked with a scale line; a sleeve 12 is also provided in the middle of the three legs 11 Be provided with crossbeam 13 between sleeve pipe 12 and three supporting feet 11, one end of these three crossbeams is connected with a short sleeve in the mode that pivot pin rotates and fits, and this short sleeve is fixed on the sleeve pipe, and the other end of three crossbeams Pipe clips are provided respectively, and are correspondingly sleeved on the legs, and the ...

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Abstract

The invention discloses a dynamic sounding device, comprising a shelf bracket, wherein the shelf bracket is provided with a probe rod device in a penetrating way; the shelf bracket comprises three legs, the ends of the three legs are connected in a foldable way, and the bottom of each leg is provided with scales; a sleeve is arranged among the three legs, and the three legs are respectively connected with the sleeve via a beam which is rotatable and foldable; and the probe rod device comprises a probe rod and a heavy punch, the probe rod is fixed with a support, the bottom of the probe rod is conical, the probe rod is arranged in the sleeve in a penetrating way, and the heavy punch is arranged above the support and is arranged on the probe rod in a penetrating way. The dynamic sounding device of the invention is easy for operation, the problems that the traditional sounding device is complex for operation and sounding time is long are avoided, and no disturbance on the original road bed is caused.

Description

technical field [0001] The invention relates to a bearing capacity testing device, in particular to a dynamic penetrating probe device used for roadbed bearing capacity testing. Background technique [0002] With the rapid development of my country's economic construction, a large number of infrastructure such as high-grade highways have been built. The stability and safety of the highway requires a subgrade with sufficient strength. In the stability and safety design, the bearing capacity test of the foundation is an important task. Traditional subgrade bearing capacity test methods, such as California Bearing Ratio Test (CBR) and Platts Penetrator Test (PPT), have certain limitations. The former needs to take out the subgrade soil from its original position and put it into the CBR test device , which will inevitably cause disturbance to the undisturbed soil, and is time-consuming and labor-intensive; for PPT, when the strength of the subgrade is high, it is sometimes diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/34
Inventor 常方强
Owner HUAQIAO UNIVERSITY
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