A deep soil vibration testing device and its testing method

Abstract

The present invention relates to a deep soil vibration testing device, which includes a guiding rope, a positioning hammer and a number of sub-components. The sub-components include a positioning ring, a limiting ring, a connecting rope, a rope clip and a buckle; a number of sub-components are connected in series by the guiding rope, and the positioning hammer is placed on the bottom sub-component; the positioning ring and the limiting ring are connected by the connecting rope, the positioning ring is placed in the middle of the limiting ring, and the positioning ring and the limiting ring are limited up and down by the rope clip; the upper and lower ends of the connecting rope are respectively tied and buckled with the buckle. The present invention buries the vibration sensor at a fixed depth in the soil at a fixed point through an auxiliary device, fills it with graded sand to simulate the original undisturbed soil to the greatest extent, measures the vibration response of the deep soil, and ensures the stability and accuracy of the measurement.

Description

Technical Field

[0001] The present invention relates to the field of environmental vibration, and particularly relates to a deep soil vibration testing device and a testing method thereof. Background Art

[0002] While rail transit brings convenience to people's travel, the accompanying environmental vibration and noise problems have become increasingly prominent, especially having a great impact on the existing precision instruments already arranged along the rail line. The selection of the line distance is crucial for the vibration impact on the area where the precision instruments are located. Therefore, before the precision instruments are in place, numerical simulation and vibration field measurement means need to be taken for the evaluation area to predict the sensitivity of the precision instruments. Since the on-site test has strong pertinence and the test data is often more reliable than other methods, it has become an indispensable important link in engineering practice. However, there is currently a lack of means to effectively measure the environmental vibration of deep soil, and it is difficult to measure the vibration response of some precision instruments placed in underground structures under the vibration of rail transit. Summary of the Invention

[0003] The purpose of the present invention is to provide a deep soil vibration testing device and a testing method thereof to effectively solve the problem that it is difficult to test the deep soil vibration.

[0004] To achieve the above purpose, the technical solution provided by the present invention is:

[0005] A deep soil vibration testing device includes a guiding rope, a positioning hammer, and several sub-components. The sub-components include a positioning ring, a limiting ring, a connecting rope, a rope clip, and a buckle. The several sub-components are connected in series by the guiding rope, and the positioning hammer is placed on the bottom sub-component. The positioning ring and the limiting ring are connected by the connecting rope. The positioning ring is placed in the middle of the limiting ring, and the positioning ring and the limiting ring are limited up and down by the rope clip. The upper and lower ends of the connecting rope are respectively tied and buckled with the buckle.

[0006] Further, the positioning hammer has a certain weight, and the positioning hammer is placed on the buckle of the bottom sub-component.

[0007] Further, the several sub-components are tightly connected by buckles.

[0008] Further, the connecting rope has ear plates. The positioning ring and the limiting ring penetrate through the ear plates of the connecting rope and are clamped tightly up and down by the rope clip.

[0009] Further, the distance between the positioning ring and the limiting ring, the length of the connecting rope, and the distance between the sub-components can all be adjusted according to the test requirements.

[0010] The present invention also provides a testing method for the above-mentioned deep soil vibration testing device, comprising the following steps:

[0011] a. Use the connecting rope to connect the positioning ring and the limit ring, and adjust the total length of each sub-component, the spacing between the positioning ring and the limit ring, and the distance from the positioning ring to the top or bottom of the sub-component according to the test requirements;

[0012] b. After the connecting rope is connected to the sub-component, both ends are tied tightly and buckled with buckles. The positioning ring and the limit ring are passed through the ear plate of the connecting rope, and the upper and lower parts are clamped with rope clamps to achieve the limiting effect of the limit ring;

[0013] c. Fix the sensor in the acrylic box so that the test direction is easy to identify. Pass the sensor's transmission line through the reserved hole on the acrylic box cover and seal the acrylic box.

[0014] d. Install the sensors on the subassemblies in sequence, arranging them in descending order according to the sensor transmission lines. Use guide ropes to connect the subassemblies in series, and tighten the rope clamps on the upper and lower lugs of the guide ropes. Straighten the transmission lines along the connecting ropes and clamp them to the connecting ropes in an evenly distributed manner, ensuring that the connecting ropes are evenly stressed and that the transmission lines of each sensor can extend from the top of the test device.

[0015] e. Fasten the middle fastener of the positioning hammer to the bottom of the lowest sub-assembly of the entire device, and fasten the other two end fasteners of the positioning hammer to two guide ropes; fasten the top of the uppermost terminal component to the hand chain hoist, and fix the hand chain hoist directly above the center of the underground test hole; the two guide ropes serve as load-bearing ropes, and pull the guide ropes to gradually lower the test device into the test hole. After the test device is stable, use graded sand to fill the test hole in layers; after filling, let it stand for a period of time before conducting deep soil vibration testing.

[0016] Furthermore, the shape of the acrylic box can be regular or irregular according to actual test requirements.

[0017] As a preferred solution, in step c, the acrylic box is filled with 703 glue to prevent the sensor from being damaged by groundwater seeping into the box when the device is in the underground test hole. After the acrylic box is sealed, the 703 glue in the box is squeezed and overflows from the reserved hole, and after solidification, it just seals the reserved hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention uses auxiliary devices to bury the vibration sensor in the soil at a fixed depth, fills it with graded sand, simulates the original undisturbed soil to the greatest extent, measures the vibration response of the deep soil, and ensures the stability and accuracy of the measurement.

[0020] The device of the present invention has a simple structure, uses inexpensive and easily available materials, is convenient to manufacture, and can solve the problem that it is difficult to test the vibration of deep soil layers. Description of the Drawings

[0021] Figure 1 : Schematic structural diagram of the deep soil layer vibration testing device of the present invention.

[0022] Figure 2 : Schematic structural diagram of the sub-component.

[0023] Figure 3 : Schematic diagram of the position of the sensor.

[0024] The reference numerals in the drawings are: 1 - sub-component, 2 - guiding rope, 3 - positioning hammer; the sub-component includes 4 - positioning ring, 5 - limiting ring, 6 - connecting rope, 7 - rope clip, 8 - buckle. Specific Embodiments

[0025] The above content of the present invention will be further described in detail below in the form of embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the above content of the present invention belong to the scope of the present invention.

[0026] A deep soil layer vibration testing device includes a guiding rope 2, a positioning hammer, and a plurality of sub-components 1. The sub-component 1 includes a positioning ring 4, a limiting ring 5, a connecting rope 6, a rope clip 7, and a buckle 8.

[0027] A plurality of sub-components 1 are connected in series by a guiding rope 2, and a positioning hammer 3 is placed on the bottom sub-component 1; the positioning ring 4 and the limiting ring 5 are connected by a connecting rope 6. The positioning ring 4 is placed in the middle of the limiting ring 5, and the positioning ring 4 and the limiting ring 5 are limited up and down by a rope clip 7; the upper and lower ends of the connecting rope 6 are respectively tied and buckled with a buckle 8.

[0028] The positioning hammer 3 has a certain weight, and the positioning hammer 3 is placed on the buckle 8 of the bottom sub-component 1.

[0029] A plurality of sub-components 1 are tightly connected by a buckle 8.

[0030] The connecting rope 6 has an ear plate. The positioning ring and the limiting ring penetrate through the ear plate of the connecting rope 6 and are clamped tightly by a rope clip 7 up and down.

[0031] The distance between the positioning ring 4 and the limiting ring 5, the length of the connecting rope 6, and the distance between the sub-components 1 can all be adjusted according to the test requirements.

[0032] The testing method of the deep soil layer vibration testing device includes the following steps:

[0033] a. Use the connecting rope 6 to connect the positioning ring 4 and the limiting ring 5, and adjust the total length of the single sub-component 1, the spacing between the positioning ring 4 and the limiting ring 5, and the distance from the positioning ring 4 to the top or bottom of the sub-component 1 according to the test requirements;

[0034] b. After the connecting rope 6 is connected to the sub-component 1, both ends are fastened and buckled with the buckle 8, the positioning ring 4 and the limiting ring 5 pass through the ear plate of the connecting rope 6, which is clamped with the rope clamp 7 above and below to limit the ring;

[0035] c. Using 502 glue to ensure easy identification of the test direction, glue the sensor to the acrylic box. The shape of the acrylic box can be regular or irregular, depending on the actual test requirements. Pass the sensor's built-in transmission line through the reserved hole in the acrylic box cover. Fill the acrylic box with 703 glue, slightly overflowing, to prevent groundwater from seeping into the box and damaging the sensor when the device is in the underground test hole. Seal the acrylic box with 502 glue. The 703 glue in the box will be squeezed and slightly overflow from the reserved hole. After solidification, it will just seal the reserved hole.

[0036] d. Install the sensors on subassemblies 1 in sequence, arranging them in descending order according to the sensor transmission lines. Use guide ropes 2 to connect the subassemblies 1 in series, and tighten rope clamps 7 on the upper and lower lugs connecting the guide ropes 2. Straighten the transmission lines along the connecting rope 6 and clamp them to the connecting rope 6 in an evenly distributed manner, ensuring that the connecting rope 6 is evenly stressed and that the transmission lines of each sensor can extend from the top of the test device.

[0037] e. Buckle the middle fastener of the positioning hammer 3 to the bottom of the lowest sub-component 1 of the entire device, and buckle the other two end fasteners of the positioning hammer 3 to two guide ropes; buckle the top of the uppermost terminal component 1 to the hand chain hoist, and fix the hand chain hoist just above the center of the underground test hole to control the final direction of the entire test device. Secondly, it can be used as a safety rope to prevent the guide rope 2 from disconnecting and the device from falling into the test hole; the two guide ropes 2 serve as load-bearing ropes, and the guide ropes 2 are pulled to gradually lower the test device into the test hole. After the test device is stable, use graded sand to fill the test hole in layers; after filling, let it stand for a period of time before conducting deep soil vibration testing.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiment without departing from the scope of the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A deep soil vibration testing device, characterized in that: The invention comprises a guide rope (2), a positioning hammer and a plurality of sub-components (1), wherein the sub-components (1) comprise a positioning ring (4), a limiting ring (5), a connecting rope (6), a rope clamp (7) and a buckle (8); the plurality of sub-components (1) are connected in series using a guide rope (2), and a positioning hammer (3) is placed on the bottom sub-component (1); the positioning ring (4) and the limiting ring (5) are connected by a connecting rope (6), the positioning ring (4) is placed in the middle of the limiting ring (5), and the positioning ring (4) and the limiting ring (5) are limited at the upper and lower ends by a rope clamp (7); the upper and lower ends of the connecting rope (6) are respectively tied and buckled with the buckle (8); the positioning hammer (3) has a certain weight, and the positioning hammer (3) is placed on the buckle (8) of the bottom sub-component (1); the plurality of sub-components (1) are fastened and connected by the buckle (8).

2. The deep soil vibration testing device according to claim 1, wherein: The connecting rope (6) has an ear plate, and a positioning ring and a limiting ring pass through the ear plate of the connecting rope (6), and the upper and lower parts thereof are clamped by rope clamps (7).

3. The deep soil vibration test device according to claim 1, characterized in that: The distance between the positioning ring (4) and the limiting ring (5), the length of the connecting rope (6), and the distance between the sub-components (1) can all be adjusted according to test requirements.

4. The testing method of the deep soil mass vibration testing device according to any one of claims 1-3, characterized in that: The following steps are involved: a. Use a connecting rope (6) to connect the positioning ring (4) and the limiting ring (5), and adjust the total length of the single sub-component (1), the spacing between the positioning ring (4) and the limiting ring (5), and the distance from the positioning ring (4) to the top or bottom of the sub-component (1) according to the test requirements; b. After the connecting rope (6) is connected to the sub-component (1), the two ends are fastened and buckled with the buckle (8), the positioning ring (4) and the limiting ring (5) are passed through the ear plate of the connecting rope (6), and the upper and lower parts are clamped with a rope clamp (7) to achieve the limiting effect of the limiting ring (5); c. Fix the sensor in the acrylic box so that the test direction is easy to identify. Pass the sensor's transmission line through the reserved hole on the acrylic box cover and seal the acrylic box. d. Install the sensors on the subassemblies (1) in sequence, arranging them in order from long to short according to the sensor transmission lines, connect the subassemblies (1) in series using the guide rope (2), and clamp the rope clamps (7) on the upper and lower ears of the guide rope (2); straighten the transmission lines along the connecting rope (6) in sequence and clamp them on the connecting rope (6) in accordance with the principle of uniform distribution, ensuring that the connecting rope (6) is evenly stressed and that the transmission lines of each sensor can extend from the top of the test device; e. Fasten the middle fastener of the positioning hammer (3) to the bottom of the lowest sub-component (1) of the entire device, and fasten the other two end fasteners of the positioning hammer (3) to the two guide ropes (2); fasten the top of the uppermost terminal component (1) to the hand chain hoist, and fix the hand chain hoist just above the center of the underground test hole; the two guide ropes (2) serve as load-bearing ropes, and pull the guide ropes (2) to gradually put the test device into the test hole. After the test device is stable, use graded sand to fill the test hole in layers; after filling, let it stand for a period of time before conducting deep soil vibration testing.

5. The testing method of the deep soil mass vibration testing device according to claim 4, characterized in that: The shape of the acrylic box is selected as a regular shape or an irregular shape according to the actual test requirements.

6. The testing method of the deep soil mass vibration testing device according to claim 4, characterized in that: In step c, the acrylic box is filled with 703 glue to prevent the device from being damaged by groundwater seeping into the box in the underground test hole. After the acrylic box is sealed, the 703 glue in the box is extruded and overflows from the reserved hole, and it just seals the reserved hole after solidification.

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