Perforated soil nail pull-out test device and test method thereof

A technology of drawing test and steel flower tube, which is applied in the test of basic structure, construction, basic structure engineering, etc.

Inactive Publication Date: 2019-11-22
张亮
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Perforated soil nail pull-out test device and test method thereof
  • Perforated soil nail pull-out test device and test method thereof

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0026] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to the technical field of civil engineering, and particularly discloses a perforated soil nail pull-out test device and a test method thereof. The perforated soil nail pull-out test device comprises an oil pressure pump pressurization system, a jack, a support component, a first extension piece and a first dialgage. The perforated soil nail pull-out test method includes the following steps that the perforated soil nail pull-out test device is assembled and is subjected to debugging and checking firstly, and normal operation of the test device is ensured; a small amount ofload is put, and then test pulling is conducted; a pull-out test is conducted according to designed grading load, and readings of a oil pressure gauge, the first dialgage and a second dialgage are recorded when operation is conducted; and data analysis and treatment is conducted according to recorded data. According to the test device, the structure is simple, use is convenient, and the test canbe carried out fast and easily; and the operation method is easy, and accuracy of results is high.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a steel pipe soil nail pullout test device and a test method thereof. Background technique [0002] Steel flower tube grouting soil nails are mainly used to reinforce the soft flow plastic soil layer that is difficult to form holes. Pressure grouting is used to spread the cement slurry to the weak soil around the steel flower tube through the overflow holes around the steel flower tube wall. In the process of filling the pores, the soil is compacted, the water content is significantly reduced, and the contact connection between soil particles is increased. [0003] The pull-out capacity of steel pipe soil nails is a key indicator affecting the design of soil nails, and its ultimate pull-out capacity is affected by factors such as the strength of the nail-soil interface, the strength of the soil around the soil nail, the upper soil pressure, and the material of the soil ...

Claims

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Application Information

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IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 张亮张晋伟刘胜张勇刘壮志郭亮
Owner 张亮
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