CN115824819A - Cement-soil strength rapid detection device and detection method - Google Patents

Abstract

The invention discloses a rapid detection device and a detection method for soil cement strength, belonging to the technical field of engineering detection, and the rapid detection device for the soil cement strength comprises: the shell is in a circular column shape; the air bag is arranged along the inner wall of the shell and is in a circular column shape; the elastic piece is arranged along the inner wall of the air bag and is in a circular column shape, and the cement soil core sample is placed on the inner side of the elastic piece; the stress-strain sensors are uniformly distributed on the inner wall of the elastic piece along the circumferential direction of the elastic piece; the pressurizer is connected with the air bag through a gas pipe; and the operating system is electrically connected with the pressurizer and the stress strain sensors respectively. The device and the method for rapidly detecting the strength of the cement soil can rapidly complete the radial strength detection of the cement soil core sample on a construction site, the detection process is simple and efficient, an accurate detection result can be rapidly obtained, the construction efficiency is improved, and the detection difficulty of technicians is reduced.

Description

Cement-soil strength rapid detection device and detection method

technical field

The invention relates to the technical field of engineering detection, in particular to a cement-soil strength rapid detection device and detection method.

Background technique

The current cement-soil mixing pile has problems such as low tensile strength, low shear strength, and uneven strength of the pile body. Before the official construction, the strength of the cement mixing pile needs to be tested to ensure the quality of the project. However, since there is a certain distance between most construction sites and the laboratory, the drilled cement soil core samples will be damaged during long-distance transportation, and accurate strength values cannot be obtained during indoor testing. The acquisition of the strength of the existing cement soil core sample will have problems such as long waiting time for the result and large error of the strength value, which will affect the progress of the project.

Contents of the invention

The purpose of the present invention is to at least solve one of the technical problems existing in the prior art. For this reason, the present invention proposes a kind of cement-soil strength fast detection device and detection method, can carry out radial strength detection to cement-soil core sample on the spot, Moreover, the cement soil core sample does not need to be processed, and the strength of the cement soil core sample can be obtained directly and quickly.

The cement-soil strength rapid detection device according to the embodiment of the first aspect of the present invention includes: a casing, the casing is in the shape of a circular column; an airbag, the airbag is arranged along the inner wall of the casing, and the airbag is in the shape of a circular column; The inner wall of the airbag is set, the elastic member is in the shape of a circular column, and the cement soil core sample is placed inside the elastic member; a plurality of stress and strain sensors are evenly distributed on the inner wall of the elastic member along the circumferential direction of the elastic member; the pressurizer, The pressurizer is connected with the air bag through the air pipe; the operating system is electrically connected with the pressurizer and a plurality of stress and strain sensors respectively.

The cement-soil strength rapid detection device according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the cement-soil rapid detection device and detection method can quickly complete the radial strength detection of the cement-soil core sample at the construction site, The soil core sample does not require additional processing, the detection process is simple and efficient, and accurate detection results can be obtained quickly, improving construction efficiency and reducing the difficulty of detection for technicians. At the same time, on-site testing does not require long-distance transportation of cement soil core samples, avoiding damage to cement soil core samples during transportation, and further improving the detection accuracy of cement soil core samples.

According to some embodiments of the present invention, a relief hole is provided on the casing, and an air delivery pipe is passed through the relief hole. One end of the air delivery pipe is connected to the pressurizer, and the other end of the air delivery pipe is connected to the airbag.

According to some embodiments of the invention, the housing is made of stainless steel.

According to some embodiments of the present invention, the air delivery pipe is a stainless steel hose.

According to some embodiments of the present invention, four stress and strain sensors are provided, and the four stress and strain sensors are evenly distributed on the inner wall of the elastic member along the circumferential direction of the elastic member.

According to the cement-soil strength rapid detection method of the embodiment of the second aspect of the present invention, the cement-soil strength rapid detection device of the embodiment of the first aspect of the present invention is applied, including:

The cement soil core sample is drilled on site, and the gas in the air bag is discharged, and the cement soil core sample is placed in the elastic member;

The operating system controls the pressurizer to inflate the airbag so that the inner wall of the elastic part fits the cement soil core;

Adjust the pressure level of the pressurizer through the operating system, continue to inflate the airbag, and uniformly pressurize the cement soil core sample;

The stress and strain sensor detects the stress and strain of the cement soil core sample, and feeds back the stress and strain data to the operating system, and the operating system calculates the elastic modulus and strength value of the cement soil core sample according to the stress and strain data.

According to some embodiments of the present invention, the drilled cement soil core sample is cylindrical, and the ratio of diameter to height of the cement soil core sample is 1:2.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is the structural representation of the cement-soil strength rapid detection device of the embodiment of the present invention;

Description of drawings:

housing 100;

airbag 200;

elastic member 300;

Stress strain sensor 400;

Pressurizer 500 ; air pipe 510 .

Detailed ways

This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

Referring to FIG. 1 , a rapid detection device and detection method for cement-soil strength according to an embodiment of the present invention will be described.

As shown in Figure 1, the cement-soil strength rapid detection device according to the embodiment of the present invention includes: a housing 100, the housing 100 is in the shape of a circular column; Columnar; elastic member 300, the elastic member 300 is arranged along the inner wall of the airbag 200, the elastic member 300 is in the shape of a circular column, and the cement soil core sample is placed inside the elastic member 300; a plurality of stress-strain sensors 400, a plurality of stress-strain sensors 400 along the elastic The circumferential direction of the part 300 is evenly distributed on the inner wall of the elastic part 300; the pressurizer 500, the pressurizer 500 is connected with the air bag 200 through the air pipe 510; the operating system, the operating system is electrically connected with the pressurizer 500 and a plurality of stress and strain sensors respectively 400 electrical connections.

As shown in Figure 1, the casing 100, the airbag 200 and the elastic member 300 are in the shape of a circular column, and the casing 100, the airbag 200 and the elastic member 300 are connected sequentially from the outside to the inside, and the casing 100, the airbag 200 and the elastic member 300 coaxial setting. The casing 100 is made of stainless steel, and the rigidity of the stainless steel casing 100 is relatively large. The airbag 200 is arranged inside the casing 100. The airbag 200 is connected to the pressurizer 500 through the gas delivery pipe 510. The air pipe 510 is set in the relief hole, and the air pipe 510 is a stainless steel hose, which has good flexibility, wear resistance and airtightness. Since the casing 100 is relatively rigid, when the pressurizer 500 inflates the airbag 200, the airbag 200 expands towards the common axial direction of the casing 100 and the airbag 200, and the elastic member 300 is arranged on the side of the airbag 200 close to the axis. , the elastic member 300 is made of plastic, so the elastic member 300 has certain elasticity. The expansion of the airbag 200 toward the common axial direction of the casing 100 and the airbag 200 will squeeze the elastic member 300, so that the inner diameter of the elastic member 300 will gradually shrink, and apply pressure to the cement soil core sample placed inside the elastic member 300. On the inner wall, four stress-strain sensors 400 are evenly distributed along the circumferential direction of the elastic member 300, and the four stress-strain sensors 400 record the stress and strain of the cement-soil core sample during the process of the elastic member 300 squeezing the cement-soil core sample.

Thus, through the setting of the annular cylindrical shell 100, the air bag 200 and the elastic member 300, the pressurizer 500 can apply pressure uniformly to the cement soil core sample along the circumferential direction, and in the process of extruding the cement soil core sample Test the stress and strain of the cement soil core sample.

Both the stress and strain sensor 400 and the pressurizer 500 are electrically connected to the operating system (not shown in the figure), so that the operating system can control the inflation of the pressurizer 500 to the airbag 200, and the pressurizer 500 first inflates the airbag 200, Until the inner side of the elastic member 300 fits with the cement-soil core, the operating system makes a prompt that the elastic member 300 fits with the cement-soil core, the operating system adjusts the pressure level of the pressurizer 500, and continues to inflate the pressurizer 500 , to apply a uniform radial pressure on the book soil core sample. The stress-strain sensor 400 detects the stress and strain of the cement soil core sample, and feeds back the stress and strain data to the operating system. The operating system automatically processes the stress and strain data, calculates the elastic modulus of the cement soil core sample, and passes the known The relationship between the elastic modulus and the compressive strength of the cement-soil strength is obtained, and finally the cement-soil strength value is displayed.

As shown in Figure 1, the cement-soil strength quick detection device according to the embodiment of the present invention comprises:

A cylindrical cement soil core sample is drilled on site, and the ratio of diameter to height of the cement soil core sample is 1:2. After the gas in the air bag 200 is discharged, the cement soil core sample is placed in the elastic member 300;

The operating system controls the pressurizer 500 to inflate the airbag 200, so that the inner wall of the elastic member 300 fits the cement soil core sample;

Adjust the pressure level of the pressurizer 500 through the operating system, continue to inflate the air bag 200, and uniformly pressurize the cement soil core sample;

The stress and strain sensor 400 detects the stress and strain of the cement soil core sample, and feeds back the stress and strain data to the operating system, and the operating system calculates the elastic modulus and strength value of the cement soil core sample according to the stress and strain data.

In summary, the cement-soil strength rapid detection device and detection method can quickly complete the radial strength detection of the cement-soil core sample at the construction site, and the cement-soil core sample does not need to undergo additional processing. Get accurate test results, improve construction efficiency, and reduce the difficulty of testing for technicians. At the same time, on-site testing does not require long-distance transportation of cement soil core samples, avoiding damage to cement soil core samples during transportation, and further improving the detection accuracy of cement soil core samples.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge of those skilled in the art .

Claims (7)

1. A quick detection device for cement-soil strength, characterized in that, comprising: A housing (100), the housing (100) is in the shape of a circular column; an airbag (200), the airbag (200) is arranged along the inner wall of the casing (100), and the airbag (200) is in the shape of a circular column; An elastic member (300), the elastic member (300) is arranged along the inner wall of the airbag (200), the elastic member (300) is in the shape of a circular column, and the cement soil core sample is placed inside the elastic member (300) ; A plurality of stress and strain sensors (400), the plurality of stress and strain sensors (400) are evenly distributed on the inner wall of the elastic member (300) along the circumferential direction of the elastic member (300); A pressurizer (500), the pressurizer (500) is connected to the airbag (200) through an air delivery pipe (510); An operating system, the operating system is electrically connected to the pressurizer (500) and the plurality of stress and strain sensors (400) respectively. 2. The cement-soil strength rapid detection device according to claim 1, characterized in that, the casing (100) is provided with a relief hole, and the gas delivery pipe (510) is penetrated in the relief hole, so that One end of the air delivery tube (510) is connected with the pressurizer (500), and the other end of the air delivery tube (510) is connected with the air bag (200). 3. The cement-soil strength rapid detection device according to claim 1, characterized in that, the housing (100) is made of stainless steel. 4. The cement-soil strength rapid detection device according to claim 1, characterized in that, the gas delivery pipe (510) is a stainless steel hose. 5. The cement-soil strength rapid detection device according to claim 1, characterized in that, the stress-strain sensors (400) are provided with four, and the four stress-strain sensors (400) are arranged along the elastic member (300) ) are evenly distributed on the inner wall of the elastic member (300). 6. A quick detection method for cement-soil strength, using the quick detection device for cement-soil strength according to any one of claims 1-5, characterized in that, comprising: The cement soil core sample is drilled on site, and after the gas in the air bag (200) is discharged, the cement soil core sample is placed in the elastic member (300); The operating system controls the pressurizer (500) to inflate the airbag (200), so that the inner wall of the elastic member (300) fits the cement soil core sample; Adjust the pressure level of the pressurizer (500) through the operating system, continue to inflate the airbag (200), and uniformly radially pressurize the cement soil core sample; The stress-strain sensor (400) detects the stress and strain of the cement soil core sample, and feeds back the stress and strain data to the operating system, and the operating system calculates the elasticity of the cement soil core sample according to the stress and strain data. Modulus and strength values. 7. The method for quickly detecting the strength of cement-soil according to claim 6, characterized in that the drilled cement-soil core sample is cylindrical, and the ratio of the diameter and height of the cement-soil core sample is 1:2.

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