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Method for testing tensile strength of interface of traditional rammed ruined site layer

A technology of tensile strength and tamping, which is applied in the field of earthen site protection test research and protection reinforcement, can solve problems such as the difficulty of occlusal force testing, and achieve the effects of convenient application, wide application scenarios, and low cost

Pending Publication Date: 2019-05-03
DUNHUANG ACAD
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Problems solved by technology

In order to overcome the limitations of existing testing machines in testing the tensile failure of reshaped soil samples, it is especially difficult to test the interfacial occlusal force of traditional rammed layers

Method used

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  • Method for testing tensile strength of interface of traditional rammed ruined site layer
  • Method for testing tensile strength of interface of traditional rammed ruined site layer
  • Method for testing tensile strength of interface of traditional rammed ruined site layer

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Embodiment Construction

[0031] The universal testing machine that the present invention uses is the WDW-200 type microcomputer control electronic universal testing machine that Tianshui Hongshan Test Co., Ltd. produces and carries out tensile strength test, and stretch rate is 0.5mm / min, and the moisture content of sample during experiment is 2 ±0.5%.

[0032] Below in conjunction with accompanying drawing, the present invention will be further described:

[0033] A method for testing the interface tensile strength of traditional rammed relics, the steps of which are:

[0034] (1) Production of tension film

[0035] (1) Making samples Collect the soil quality of Jiaohe River, and prepare samples with a diameter of 61.8mm and a height of 41.7mm without interface tensile strength. Sample 1 is a two-layer compaction test of direct tamping, smooth surface, rough surface and rammed surface treatment. In the same way, the single-layer compacted thickness is 41.7 mm, and the double-layered thickness is 83...

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Abstract

The invention relates to a method for testing the tensile strength of an interface of a rammed earth sample layer. The two end surfaces of a test sample are coated with a silicone acrylic emulsion andepoxy resin; the two ends of the test sample are reinforced; the contact with and adhering to a tension piece are realized by an adhesive; handle-included tension pieces are adhered and are connectedwith a universal testing machine; the tensile rate adjustment of the universal testing machine is carried out; calculation of the stress and strain is carried out to obtain a test sample tension strength sigma being equal to F / S and a test sample layer interface strain epsilon being equal to deltaL / L0. According to the invention, the method is operated simply and is applied conveniently; the costis low; and thus the method has the broad application prospects in the field of measuring the tensile strength of the interface of the rammed earth layer.

Description

technical field [0001] The invention relates to the field of protection test research and protection and reinforcement of earth ruins, and belongs to an important method for the research on the internal force of the interface of the traditional rammed earth ruins layer, especially for the study of the internal force distribution characteristics of the weak area of ​​the interface of the rammed earth structure layer under the action of static force and earthquake force. significance. This method can also be applied to related fields such as geotechnical engineering. Background technique [0002] In Xinjiang, Gansu, Ningxia and Shaanxi in Northwest my country, there are many ancient earthen building sites, the Great Wall in the north, the Guancheng and Beacon Towers in the vast Gobi in the northwest, and the Jiaohe, Gaochang, Loulan and Niya ruins in Xinjiang. Years, thousands of miles across, all over China. These earthen building sites have a long history, and some have b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/08G01N1/28
Inventor 裴强强郭青林赵林毅李志鹏赵建忠
Owner DUNHUANG ACAD