An overall deformation monitoring device for the entire area of sandy soil

Abstract

The present invention relates to a monitoring device for the overall deformation of the entire sandy soil area, which includes a stainless-steel steel frame and at least one set of displacement measurement components. The stainless-steel steel frame includes four vertical brackets, multiple horizontal brackets, at least one horizontal support rod, and at least one vertical suspension rod; the multiple horizontal brackets are connected to each other to form a square frame, and each of the four corners of the square frame is connected to one of the vertical brackets. The square frame formed by the multiple horizontal brackets is connected to the vertical suspension rod, and the middle of the vertical suspension rod is connected to the horizontal support rod; the displacement measurement components include a horizontal displacement measurement component and a vertical displacement measurement component. The horizontal displacement measurement component is connected to the horizontal support rod, and the vertical displacement measurement component is connected to the vertical suspension rod. The present invention can simultaneously measure the horizontal and vertical displacements of multiple points.

Description

Technical Field

[0001] The present invention relates to a monitoring device for the overall deformation of sandy soil in the whole area. Background Art

[0002] In many fields such as traffic engineering, water conservancy engineering, and port and waterway engineering, sand is used for foundation treatment or filling projects. The deformation of such filling bodies, especially the uneven deformation in the horizontal and vertical directions, will have an adverse impact on their own structures and the normal use of surrounding structures. Therefore, the monitoring of their uneven deformation is particularly important.

[0003] Traditional deformation measuring instruments can mostly only measure settlement or only measure horizontal displacement, with single functions. Traditional measurement methods mostly prefabricate markers in the filling body, and then manually use measuring instruments for measurement. The obtained data has poor timeliness and it is not easy to obtain real-time monitoring data.

[0004] Traditional measuring instruments can mostly only measure the displacement and deformation at one place, while for filling bodies, more critical is their uneven settlement.

[0005] Therefore, in view of the above problems, a monitoring device for the overall deformation of sandy soil in the whole area is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a monitoring device for the overall deformation of sandy soil in the whole area to overcome the existing defects, which can measure the horizontal and vertical displacements at multiple positions simultaneously.

[0007] The technical solution to achieve the above purpose is: a monitoring device for the overall deformation of sandy soil in the whole area, including a stainless steel steel frame and at least one set of displacement measurement components.

[0008] The stainless steel steel frame includes four vertical supports, multiple horizontal supports, at least one horizontal support rod, and at least one vertical suspension rod; the multiple horizontal supports are connected to each other to form a square frame, and each of the four corners of the square frame is connected to one of the vertical supports. The square frame formed by the multiple horizontal supports is connected to the vertical suspension rod, and the middle of the vertical suspension rod is connected to the horizontal support rod.

[0009] The displacement measurement components include a horizontal displacement measurement component and a vertical displacement measurement component. The horizontal displacement measurement component is connected to the horizontal support rod, and the vertical displacement measurement component is connected to the vertical suspension rod.

[0010] Preferably, the horizontal displacement measurement component includes an outer protection box and a vertical disc. A horizontal movable pipe is connected to the middle of the outer protection box. A pull rod is connected to the side wall of the vertical disc and is located inside the movable pipe. One end of the pull rod away from the vertical disc is connected to a rubber plug. A partition is connected inside the movable pipe. A first strain resistance element is connected to the partition. A first chamber is formed between the left side of the partition and the rubber plug inside the movable pipe. A second chamber is formed between the right side of the partition and the movable pipe.

[0011] Preferably, the horizontal displacement measurement component further includes a first resistance measuring instrument, and the first resistance measuring instrument is electrically connected to the first strain resistance element.

[0012] Preferably, the vertical displacement measurement component includes an outer box. A chute is opened at the upper end of the outer box. A spiral blade is arranged in the chute. A sand storage pipe is connected to the bottom of the chute. The bottom end of the sand storage pipe is connected to a second strain resistance element. A middle gear and a side gear are arranged inside the outer box. The side gear meshes with the middle gear. A shaft gear is connected to the middle of the spiral blade. The shaft gear meshes with the middle gear. A connecting cable is wound around the rotating shaft connected to the side gear. The lower end of the connecting cable is connected to a vertical connecting rod. The lower end of the vertical connecting rod is connected to a horizontal disc.

[0013] Preferably, the vertical displacement measurement component further includes a second resistance measuring instrument, and the second resistance measuring instrument is electrically connected to the second strain resistance element.

[0014] Preferably, the pull rod is slidably connected to the inner wall of the movable pipe.

[0015] Preferably, the right side wall of the outer protection box is connected to the horizontal support rod.

[0016] Preferably, the upper end of the outer box is connected to the vertical hanging rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the horizontal displacement measurement box, the horizontal displacement of the soil body drives the displacement of the vertical disc, which can change the air pressure in the first chamber, so that the air pressure difference received by the first strain resistance element changes, and then its resistance value changes. The specific value is measured by the first resistance measuring instrument, so as to calculate the pressure difference it receives, and then the horizontal displacement of the soil body is obtained.

[0019] In the vertical displacement measurement box, the vertical displacement of the soil body drives the displacement of the horizontal disc, and through the gear transmission, the spiral blade is driven to rotate. The sand between the blades leaks into the sand storage pipe, generating pressure on the strain resistance element two, and then its resistance value changes. The specific value is measured by the resistance measuring instrument two, so as to calculate the pressure it receives, and then the vertical displacement of the soil body is obtained. All processes can be realized through programming languages, and the displacement data can be monitored in real time, effectively reducing the complexity of displacement measurement operations and enhancing the timeliness of data.

[0020] 2. It can measure the horizontal and vertical displacements of the soil body, and by reasonably arranging the measuring instruments, the uneven deformation of the filling body can be measured. Compared with ordinary displacement measuring devices, its functions are more abundant.

[0021] 3. Make full use of the characteristics of good fluidity and weak cohesion of sand to measure the vertical displacement, which is suitable for the deformation measurement of engineering projects filled with sand. Brief Description of the Drawings

[0022] Figure 1 It is the top view of a sand soil whole-region overall deformation monitoring device of the present invention;

[0023] Figure 2 It is the front view of the present invention;

[0024] Figure 3 It is the detailed view of the horizontal displacement measurement component of the present invention;

[0025] Figure 4 It is the right view of the horizontal displacement measurement component of the present invention;

[0026] Figure 5 It is the front view of the vertical displacement measurement component of the present invention;

[0027] Figure 6 It is the axonometric view of the vertical displacement measurement component of the present invention.

[0028] In the figure: 1. Stainless steel steel frame; 101. Vertical support; 102. Horizontal support; 103. Horizontal support rod; 104. Vertical suspension rod; 2. Horizontal displacement measurement component; 201. Vertical disc; 202. Outer protection box; 203. Movable pipeline; 204. Pull rod; 205. Rubber plug; 206. Partition board; 207. Strain resistance element one; 208. Chamber one; 209. Chamber two; 210. Resistance measuring instrument one; 3. Vertical displacement measurement component; 301. Outer box; 302. Slide groove; 303. Spiral blade; 304. Sand storage pipe; 305. Strain resistance element two; 306. Axial gear; 307. Middle gear; 308. Side gear; 309. Connecting cable; 310. Vertical connecting rod; 311. Horizontal disc; 312. Resistance measuring instrument two. Detailed Embodiment

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

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

[0031] As Figure 1-6 shown, a whole-region overall deformation monitoring device for sandy soil includes a stainless-steel steel frame 1 and at least one set of displacement measurement components. The stainless-steel steel frame 1 includes four vertical supports 101, multiple horizontal supports 102, at least one horizontal support rod 103, and at least one vertical suspension rod 104; the multiple horizontal supports 102 are connected to each other to form a square frame, and each of the four corners of the square frame is connected to a vertical support 101. The square frame formed by the multiple horizontal supports 102 is connected to the vertical suspension rod 104, and the middle of the vertical suspension rod 104 is connected to the horizontal support rod 103; the displacement measurement components include a horizontal displacement measurement component 2 and a vertical displacement measurement component 3. The horizontal displacement measurement component 2 is connected to the horizontal support rod 103, and the vertical displacement measurement component 3 is connected to the vertical suspension rod 104. The stainless-steel steel frame 1 is buried in the fill soil, and anti-corrosion measures such as wrapping it with CFRP are required;

[0032] Specifically, this device can measure the horizontal and vertical displacements of the soil body, and by reasonably arranging the measuring instruments, the uneven deformation of the filling body can be measured. Compared with ordinary displacement measurement devices, its functions are more abundant.

[0033] Specifically, make full use of the characteristics of good fluidity and weak cohesion of sandy soil to measure the vertical displacement, which is applicable to the deformation measurement of engineering projects filled with sand.

[0034] Specifically, the horizontal displacement measurement component 2 includes an outer protection box 202 and a vertical disc 201. The middle of the outer protection box 202 is connected to a horizontal movable pipe 203. The side wall of the vertical disc 201 is connected to a pull rod 204 and is located inside the movable pipe 203. One end of the pull rod 204 away from the vertical disc 201 is connected to a rubber plug 205. A partition 206 is connected inside the movable pipe 203. A first strain resistance element 207 is connected to the partition 206. A first chamber 208 is formed between the left side of the partition 206 and the rubber plug 205 inside the movable pipe 203. A second chamber 209 is formed between the right side of the partition 206 and the movable pipe 203. The horizontal displacement measurement component 2 further includes a first resistance measuring instrument 210. The first resistance measuring instrument 210 is electrically connected to the first strain resistance element 207. The pull rod 204 is slidably connected to the inner wall of the movable pipe 203. The right side wall of the outer protection box 202 is connected to a horizontal support rod 103. The rubber plug 205 and the partition 206 ensure excellent airtightness inside the instrument.

[0035] Specifically, the initial state inside the first chamber 208 is a standard atmospheric pressure, and its volume changes with the movement of the vertical disc 201. The inside of the second chamber 209 is a standard atmospheric pressure. The cross-sectional area of the movable pipe 203 is small to avoid excessive resistance to soil deformation caused by the movement of the vertical disc 201 and the pull rod 204.

[0036] Specifically, the horizontal displacement of the soil drives the movement of the vertical disc 201, causing the volume of the first chamber 208 to change, and thus the air pressure inside it changes. Thereby, the horizontal deformation amount is converted into a resistance change caused by the air pressure difference on both sides of the first strain resistance element 207.

[0037] Specifically, in the horizontal displacement measurement component 2, the horizontal displacement of the soil drives the displacement of the vertical disc 201, which can change the air pressure in the first chamber 208, thereby changing the air pressure difference received by the first strain resistance element 207, and further changing its resistance value. The specific value is measured by the first resistance measuring instrument 210, thereby calculating the pressure difference it receives, and further obtaining the horizontal displacement of the soil.

[0038] Specifically, the vertical displacement measurement component 3 includes an outer box 301. A chute 302 is provided at the upper end of the outer box 301. A spiral blade 303 is arranged in the chute 302. A sand storage tube 304 is connected to the bottom of the chute 302. The bottom end of the sand storage tube 304 is connected to a second strain resistance element 305. A middle gear 307 and a side gear 308 are arranged in the outer box 301. The side gear 308 meshes with the middle gear 307. The middle of the spiral blade 303 is connected to a shaft gear 306. The shaft gear 306 meshes with the middle gear 307. A connecting cable 309 is wound around the rotating shaft connected to the side gear 308. The lower end of the connecting cable 309 is connected to a vertical connecting rod 310. The lower end of the vertical connecting rod 310 is connected to a horizontal disc 311. The vertical displacement measurement component 3 further includes a second resistance measuring instrument 312. The second resistance measuring instrument 312 is electrically connected to the second strain resistance element 305. The upper end of the outer box 301 is connected to a vertical hanging rod 104. The number of blades of the spiral blade 303 can be determined according to actual situations.

[0039] Specifically, the vertical displacement of the soil body drives the horizontal disc 311 to move. Through the mutual transmission among the shaft gear 306, the middle gear 307 and the side gear 308, the spiral blade 303 is driven to rotate, so that the sand between the blades falls into the sand storage tube 304, thereby converting the vertical deformation amount into the resistance change generated by the weight of the sand on the second strain resistance element 305.

[0040] Specifically, the first strain resistance element 207 and the second strain resistance element 305 can be materials with high conductivity such as carbon fiber sheets, and their resistance values change with the pressure they receive. The change in their resistance values is extremely sensitive to the change in the pressure they receive.

[0041] Specifically, in the vertical displacement measurement component 3, the vertical displacement of the soil body drives the horizontal disc 311 to displace. Through gear transmission, the spiral blade 303 is driven to rotate. The sand between the blades leaks into the sand storage tube 304, generating pressure on the second strain resistance element 305, and then its resistance value changes. The specific value is measured by the second resistance measuring instrument 305, so as to calculate the pressure it receives, and then the vertical displacement of the soil body is obtained. All processes can be implemented through programming languages, and the displacement data can be monitored in real time, effectively reducing the complexity of displacement measurement operations and enhancing the timeliness of data.

[0042] Specifically, the present invention is applicable to the observation of the horizontal and vertical non-uniform displacements of sandy fill bodies on a foundation with stable settlement, and includes the following steps: The device is pre-placed at the location of the filling project, and the horizontal support rod 103 and the vertical suspension rod 104 are pre-arranged according to actual needs. The horizontal displacement measurement component measures the horizontal displacement. Under the action of soil displacement, the vertical disc 201 moves left and right, causing the volume of the first chamber 208 to change. According to the formula, it can be known that the volume of the first chamber 208 changes, and the air pressure therein changes accordingly. At this time, the strain resistance element 207 installed in the movable pipe 203 is subjected to a pressure difference due to the different air pressures on the left and right, and the resistance changes immediately. The resistance measuring instrument 210 can accurately measure its resistance value. According to the measured resistance value, through theoretical calculation, it is converted into the air pressure difference received by the strain resistance element 207, thereby calculating the volume of the second chamber 209, and thus obtaining the horizontal displacement.

[0043]

[0044] In the formula: n is the number of moles of gas, R is the gas constant, T is the temperature, V 1 、V 2 are the volumes of the first chamber 208 and the second chamber 209 respectively, and P 1 、P 2 are the pressures of the first chamber 208 and the second chamber 209 respectively.

[0045] The vertical displacement measurement component 3 can measure the soil settlement. Under the action of soil subsidence, the horizontal disc 311 moves downward, and the distance that the horizontal disc 311 moves is the soil settlement. The vertical connecting rod 310 and the connecting cable 309 are used to pull the gear to rotate. Through the transmission of the middle gear 307 and the shaft gear 306, the spiral blade 303 is driven to rotate. When the sandwiched sand between the blades passes through the sand storage pipe 304, the sand will fall into the sand storage pipe 304. There is a quantitative relationship between the amount of sand falling into the sand storage pipe 304, the gear rotation, and the soil settlement amount. This quantitative relationship can be obtained through experiments. The sand falling into the sand storage pipe 304 exerts pressure on the strain resistance element 2 installed at the bottom of the sand storage pipe 304, thereby changing its resistance value. The resistance measuring instrument 312 can accurately measure its resistance value. According to the measured resistance value, through theoretical calculation, it is converted into the pressure of the sand received by the strain resistance element 2, and then the rotation distance of the gear is calculated, and further the displacement of the horizontal disc 311 is deduced, that is, the soil settlement of the measuring point.

[0046] Select strain resistance elements made of suitable materials, study the variation law of their resistance values with the pressure they receive through experiments, and obtain accurate theoretical formulas.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An overall deformation monitoring device for the whole area of sandy soil, characterized in that, it includes a stainless - steel steel frame (1) and at least one set of displacement measurement components, The stainless - steel steel frame (1) includes four vertical brackets (101), multiple horizontal brackets (102), at least one horizontal support rod (103) and at least one vertical suspension rod (104); multiple of the horizontal brackets (102) are connected to each other to form a square frame, and each of the four corners of the square frame is connected to one of the vertical brackets (101), the square frame formed by the multiple horizontal brackets (102) is connected to the vertical suspension rod (104), and the middle of the vertical suspension rod (104) is connected to the horizontal support rod (103); The displacement measurement components include a horizontal displacement measurement component (2) and a vertical displacement measurement component (3), the horizontal displacement measurement component (2) is connected to the horizontal support rod (103), and the vertical displacement measurement component (3) is connected to the vertical suspension rod (104); The horizontal displacement measurement component (2) includes an outer protection box (202) and a vertical disc (201), a horizontal movable pipe (203) is connected to the middle of the outer protection box (202), a pull rod (204) is connected to the side wall of the vertical disc (201) and is located inside the movable pipe (203), one end of the pull rod (204) away from the vertical disc (201) is connected to a rubber plug (205), a partition (206) is connected inside the movable pipe (203), a strain resistance element one (207) is connected to the partition (206), a chamber one (208) is formed between the left side of the partition (206) and the rubber plug (205) inside the movable pipe (203), and a chamber two (209) is formed between the right side of the partition (206) and the movable pipe (203); The horizontal displacement measurement component (2) further includes a resistance measuring instrument one (210), and the resistance measuring instrument one (210) is electrically connected to the strain resistance element one (207); The vertical displacement measurement component (3) includes an outer box (301), a chute (302) is opened at the upper end of the outer box (301), a spiral blade (303) is arranged inside the chute (302), a sand storage pipe (304) is connected to the bottom of the chute (302); the bottom end of the sand storage pipe (304) is connected to a strain resistance element two (305); a middle gear (307) and a side gear (308) are arranged inside the outer box (301), the side gear (308) meshes with the middle gear (307), a shaft gear (306) is connected to the middle of the spiral blade (303), the shaft gear (306) meshes with the middle gear (307), a connecting cable (309) is wound around the rotating shaft connected to the side gear (308), the lower end of the connecting cable (309) is connected to a vertical connecting rod (310), and the lower end of the vertical connecting rod (310) is connected to a horizontal disc (311); The vertical displacement measurement component (3) further includes a second resistance measuring instrument (312), and the second resistance measuring instrument (312) is electrically connected to the second strain resistance element (305).

2. The overall deformation monitoring device for the whole area of sandy soil according to claim 1, characterized in that the pull rod (204) is slidably connected to the inner wall of the movable pipe (203).

3. The overall deformation monitoring device for the whole area of sandy soil according to claim 1, characterized in that the right side wall of the outer protection box (202) is connected to the horizontal support rod (103).

4. The overall deformation monitoring device for the whole area of sandy soil according to claim 1, characterized in that the upper end of the outer box (301) is connected to the vertical suspension rod (104).

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