Soft soil roadbed settlement high-precision monitoring method and device

A soft soil subgrade and monitoring device technology, which is applied to measuring devices, height/level measurement, surveying and navigation, etc., can solve the problems of high testing costs, inaccurate results, and heavy workload, so as to reduce workload and monitor data. Precise, less protective effect

Pending Publication Date: 2021-08-17

SOUTHEAST UNIV

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AI-Extracted Technical Summary

Problems solved by technology

The layered sedimentation method is also the most commonly used method at present. It has the advantages of high precision and wide application range. However, the electromagnetic scale will have a certain impact on the precision, and the results obtained may not be accurate.

[0009] To sum up, it can be seen t...

Method used

In actual construction, at first determine monitoring position, should be arranged in obvious and representative position; Carry out drilling by the aperture of the requirement of design, hole depth during drilling, in order to avoid producing bending, produce to monitoring equipment adverse effects. The device is buried as a whole, and t...

Abstract

The invention provides a soft soil roadbed settlement high-precision monitoring method. Settlement in a roadbed is monitored in a camera shooting mode, a novel roadbed settlement monitoring device is designed, a body of the device is composed of a settlement plate, a hollow pipe, an inner-layer PVC pipe and an outer-layer PVC pipe, wherein the settlement plate and the inner-layer PVC pipe are connected through the hollow pipe, a range allowing sliding is reserved between the inner-layer PVC pipe and the outer-layer PVC pipe, the distance from the settlement plate to the outer-layer PVC pipe is the measuring range of the device and can be selected according to the height of a measured roadbed, a placing frame is arranged in the inner-layer PVC pipe, two penetrating holes are formed in the bottom of the inner-layer PVC pipe, and a stay wire passes through the penetrating hole, bypasses the placing frame, passes through the other penetrating hole and is connected with a counter weight. The stay wire is straightened, then the camera of the inner-layer PVC pipe is used for monitoring, data are transmitted through the cable, and the shooting interval is set to achieve the purpose of real-time monitoring.

Application Domain

Photogrammetry/videogrammetryHeight/levelling measurement

Technology Topic

Soil scienceGeotechnical engineering +2

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Examples

Experimental program(1)

Example Embodiment

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] like Figure 1 to 4 A soft soil-based sink reduction high precision monitoring device, including a settling plate, hollow tube, inner-layer PVC tube, outer layer PVC tube, placement frame, camera, cable, weight, buckle, display device \ wireless device . The settling plate and the inner layer PVC tube are connected by hollow tubes; the inner PVC tube is disposed inside the outer PVC tube, and there is a range of allowable sliding between the two. The distance of the settling plate to the outer PVC tube is the measurement range of the device, and can be selected depending on the measured path base. There is a placing frame inside the inner PVC tube, and two perforations are provided at the bottom of the inner PVC tube, and the pulley passes through one of the perforations, byparation, passing from another perforation, and connecting a weight, Straightened. The camera is set up on the inner PVC tube to monitor, transmit data through the cable, set the shooting interval to achieve the purpose of real-time monitoring.

[0032] In actual construction, first determine the monitoring position, it should be found in the obvious and representative position; the hole diameter of the design is taken, and the hole is deeply drilled to avoid being bent, and the monitoring equipment has a poor effect. . The device uses an overall embedding, and the wire is taken from the inside of the device, high stability, suitable for various temperatures and harsh environments.

[0033] The hollow tube of the apparatus and the settling plate and the inner layer PVC tube use a hinge structure, and the production of the balance is prevented such that the settling plate and the lower structure are deflected. According to the depth of the drilling, the length of the outer layer tube is used, or is pair The device is spliced (two or several PVC tubes for up and down), and the buckle is set in the final PVC tube to secure the drawing rope. The base settlement monitoring device can solve the technical problem of monitoring depth in the prior art, which can adjust the depth of monitoring and apply to a variety of complex environments.

[0034] Alternatively, the device uses a camera to perform real-time monitoring, transmitted by the cable, according to the actual needs of the cable, can be connected to single-point monitoring, and can also be connected to the wireless transmitter multi-point monitoring through the console. At the same time, the way to settle down is fast, and video can be monitored to obtain dynamic changes in settlement.

[0035] Further: The perforation diameter of the inner PVC tube is less than the weight.

[0036] Further: There is a scale on the pull line and there is a certain width.

[0037] Further: One end of the pulley is connected to the anchor, and the other end is connected to the weight to ensure that the pull line is in a pre-voltage state, and the reading is accurate.

[0038] Further: The sidewall of the outer PVC tube is provided with a horizontally arranged card slot, and the cable is passed from the card slot to ensure that the cable does not have deflection, and there is an indication mark to determine the read number of the scale scale.

[0039] Further: The placement is composed of two cylindrical tubes, and is arranged laterally in the inner PVC tube, and the central portion of the cylindrical tube is used to ensure that the pulley does not have a large lateral displacement.

[0040] A soft soil, a high-precision monitoring method, which will embed the high-precision monitoring device of the soft soil sink to the above-described soft soil-based sink, and take the magazine value on the cable in different time measuring devices to display soft soil by capturing the scale value on the cable in different time measuring devices. The amount of settlement of the roadbed, the difference between the direct reading of different time scale is the settlement amount of the subgrade.

[0041] The present invention is not as well as known techniques.

[0042] The above embodiments are merely illustrative of the technical idea and characteristics of the present invention, and an object thereof is to understand those skilled in the art to understand the content of the present invention, and will not be able to limit the scope of the invention. Any equivalent change or modification of the spiritual substance of the present invention should be covered within the scope of the invention.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Monitoring data is accurate
reduce mistakes

Soft soil roadbed settlement high-precision monitoring method and device

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

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Description & Claims & Application Information

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