Simple pier pile foundation scouring depth monitoring device

Abstract

The utility model belongs to the technical field of bridge pile foundation detection, and particularly relates to a simple pier pile foundation scouring depth monitoring device. Comprising a detection feeler lever, one end of the detection feeler lever in contact with a riverbed scouring line is provided with a heavy hammer, the other end is provided with a pointer, and a pier column is provided with scales corresponding to the pointer; and the fixing device is used for fixing the detection probe rod to be connected with the pier column, ensuring that the detection probe rod is parallel to the pier column and enabling the detection probe rod to freely move in the vertical direction. The actual scouring depth is reflected through the scale pointed by the pointer, the monitoring process is simple and direct, the measured data are real and accurate, and meanwhile, the durability and the stability of the device are improved through the protective sleeve arranged in a preferable scheme. The utility model has the advantages of simple structure, difficulty in damage, quickness in installation, excellent durability under different water flow conditions and lower cost, and is favorable for popularization and application.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge pile foundation detection, and particularly relates to a simple monitoring device for the scour depth of bridge pier pile foundations. Background Art

[0002] As an important structure of a bridge, the bridge foundation is often subject to the scouring action of water flow under the action of the flow field environment. Among them, the local scouring generated around the foundation will cause the sediment around it to be carried away, generating vortices and scouring, and then forming a scour pit. The reduction of the riverbed caused by these scours will affect the stability of the bridge foundation, thus threatening the safety of the bridge itself and related structures. Traditional underwater detection methods such as frogmen diving detection are costly and have safety risks. At present, sensors such as sound and light are used for monitoring. Although the change of the scour depth can be monitored more accurately, these sensors are limited by the use environment,

[0003] and the installation and maintenance costs are high. Therefore, a mechanical monitoring device is needed to meet the requirements of convenient installation and reliable monitoring.

[0004] For example, the technical solution in Patent CN201520587295.7 includes a sinking iron, a combined steel pipe, a fixed steel frame, a measuring device, and a communication device; the sinking iron is attached to the riverbed ground; the combined steel pipe includes an inner steel pipe and an outer steel pipe, the inner diameter of the outer steel pipe is greater than the outer diameter of the inner steel pipe, and the inner steel pipe is placed inside the outer steel pipe; the fixed steel frame connects the side of the outer steel pipe and the bridge pier; the measuring device is connected to the inner steel pipe; the communication device is connected to the measuring device.

[0005] However, in this technical solution, the displacement of the inner steel pipe is measured by a wire displacement gauge. The measuring device is connected to the inner steel pipe through a wire, and the scour depth is judged by the length of the wire telescoping. The data presentation is not intuitive and is prone to errors. And this device has more components, and some components are prone to failure in the fast-flowing water. Therefore, a simple and reliable monitoring device for the scour depth of bridge pier pile foundations is needed to meet the daily monitoring of different water flow conditions. Summary of the Utility Model

[0006] The utility model aims to overcome the defects that the existing scour depth monitoring device using sensors is difficult to adapt to complex working conditions, is easy to be damaged, and the installation and maintenance are relatively complex, and provides a simple monitoring device for the scour depth of bridge pier pile foundations to overcome the above defects.

[0007] To achieve the above object of the invention, the utility model is realized by the following technical solutions:

[0008] A simple monitoring device for the scour depth of bridge pier pile foundations, comprising:

[0009] The detection probe rod has a plumb bob at one end in contact with the riverbed scouring line and a pointer at the other end. There are scales corresponding to the pointer on the pier column.

[0010] The fixing device is used to fix the connection between the detection probe rod and the pier column, ensuring that the detection probe rod is parallel to the pier column and at the same time enabling the detection probe rod to move freely in the vertical direction.

[0011] The bridge pier foundation pile is the basis for ensuring the safety of the bridge. If the bridge pier foundation pile is hollowed out due to the influence of riverbed scouring, it may cause the bridge to sink or even collapse, and the scouring depth may change due to a sharp increase in water flow. Therefore, the monitoring of the scouring depth of the foundation pile should be maintained at a certain frequency to ensure the safety of the bridge. The traditional monitoring method is mainly for divers to directly go into the water to check the riverbed situation around the foundation pile, and use underwater cameras or sonar equipment to scan around the foundation pile to obtain images or data of the scouring depth. However, this method has high requirements for water quality, is time-consuming and laborious for monitoring, and is not suitable for regular scouring depth monitoring. The currently widely used sensor monitoring method measures the scouring depth using data such as light and sound. Although the data accuracy is high, the device cost is high, the installation and maintenance are complex, and it is prone to failure in complex working conditions, especially in scenarios with changing water flows. The power supply of the sensor is limited by the working environment and is not easy to solve. Therefore, a simple scouring depth measuring device with a simple structure, fast installation and maintenance, stable operation, and intuitive data is needed to adapt to daily scouring depth monitoring.

[0012] The utility model includes a detection probe rod with a plumb bob at one end to ensure that the detection probe rod closely adheres to the riverbed, and a pointer at the other end. Preferably, the pointer is made of PVC plastic to prevent rust. There are scales on the pier column at the corresponding position of the pointer. The detection probe rod is connected to the bridge pier column through several fixing devices, enabling the detection probe rod to move freely in the vertical direction and at the same time ensuring that the detection probe rod is parallel to the pier column, so as to make the reading accurate.

[0013] Preferably, the fixing device includes an anchor plate closely attached to the pier column, and the anchor plate is fixedly connected to the pier column through anchor bolts. To ensure the stability of the scouring depth monitoring device, an anchor plate with the same curvature as the pier column is selected to increase the contact area between the anchor plate and the pier column, and then the anchor plate is closely attached to the pier column through anchor bolts to ensure that the monitoring device can remain stable in the turbulent water flow.

[0014] Preferably, the fixing device includes a ring sleeve for sleeving the detection probe rod. The inner diameter of the ring sleeve is slightly larger than the diameter of the detection probe rod, enabling the detection probe rod to move freely within the ring sleeve.

[0015] As a further preference, the annular sleeve has an opening, and two extension parts extend outward from the opening. The extension parts are attached to each other by fastening bolts. Since the detection probe rod is exposed to the water flow, the detection probe rod needs to be repaired and replaced. However, the frequent disassembly of the anchor plate fixed to the pier column by anchor bolts will affect the stability, and it is more convenient to disassemble and assemble at the fixing device. On the other hand, the tightness of the annular sleeve can be controlled by the fastening bolts to ensure that the detection probe rod can move freely in the vertical direction.

[0016] As a preference, a protective sleeve capable of covering the detection probe rod is further provided on the anchor plate, and a display window capable of showing the pointer position is provided on the protective sleeve. The scour depth monitoring device is often installed at the pier where the water flow is rapid, and it needs to withstand a large water flow impact and is affected by foreign objects in the water flow. Therefore, the present utility model provides a protective sleeve outside the detection probe rod. The protective sleeve is welded or integrally formed with the anchor plate, and a display window is provided at the moving position of the pointer on the protective sleeve for exposing the pointer.

[0017] As a further preference, the display window is rectangular.

[0018] As a further preference, scales corresponding to the pointer are further provided on both sides of the display window. Due to the cover of the protective sleeve, the scales on both sides of the display window can replace the scales on the pier column, making the reading more intuitive.

[0019] As a preference, the fixing device further includes a chute bracket for sleeving the detection probe rod. Using an integrally formed chute bracket as the support of the detection probe rod enables the detection probe rod to move freely in the vertical direction.

[0020] As a further preference, one end of the chute bracket is fixedly connected to the anchor plate, and the other end is fixedly connected to the protective sleeve. A space for accommodating the detection probe rod is formed between the anchor plate and the protective sleeve. Fixing the chute bracket to the two can further improve the impact resistance of the detection probe rod and play an auxiliary supporting role for the protective sleeve.

[0021] As a preference, the weight is a conical shape with a larger upper part and a smaller lower part. By designing the weight into a conical shape, on the one hand, the weight can be anchored into the riverbed for a short distance to ensure the stability of the detection probe rod, and on the other hand, it can avoid the weight sinking into the riverbed, resulting in too large an error in the pointer reading.

[0022] Therefore, the present utility model has the following beneficial effects:

[0023] (1) The present utility model reflects the actual scour depth through the scale pointed by the pointer. The monitoring process is simple and direct, and the measured data is true and accurate;

[0024] (2) Through the protective sleeve provided in the preferred solution of the present utility model, the monitoring device can adapt to various water flow environments, and at the same time makes the pointer reading more prominent and intuitive.

[0025] (2) The present utility model monitors the scouring depth of bridge pier pile foundations through a simple mechanical device, with a simple structure, not easily damaged, greatly reducing the monitoring cost of the scouring depth of bridge pier pile foundations. It is relatively simple, quick to install, has excellent durability in water flow environments, and has a low cost, which is conducive to popularization and application in production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a simple bridge pier pile foundation scouring depth monitoring device shown in Embodiment 1 of the present utility model.

[0027] Figure 2 It is a top view of a simple bridge pier pile foundation scouring depth monitoring device shown in Embodiment 1 of the present utility model.

[0028] Figure 3 It is a schematic structural diagram of the fixing device shown in Embodiment 1 of the present utility model.

[0029] Figure 4 It is a schematic structural diagram of a simple bridge pier pile foundation scouring depth monitoring device shown in Embodiment 2 of the present utility model.

[0030] Figure 5 It is a side view of a simple bridge pier pile foundation scouring depth monitoring device shown in Embodiment 2 of the present utility model.

[0031] Figure 6 It is a top view of a simple bridge pier pile foundation scouring depth monitoring device shown in Embodiment 2 of the present utility model.

[0032] Figure 7 It is a schematic diagram of the detection probe rod shown in Embodiment 2 of the present utility model.

[0033] In the figure: riverbed scouring line 1; pier column 2; detection probe rod 10; weight 11; pointer 12; fixing device 20; anchor plate 21; anchor bolt 22; annular sleeve 23; opening 24; extension part 25; fastening bolt 26; protective sleeve 30; display window 31; chute bracket 32. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific embodiments. Those of ordinary skill in the art will be able to implement the present utility model based on these descriptions. In addition, the embodiments of the present utility model involved in the following description are usually only a part of the embodiments of the present utility model, rather than all the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0035] Embodiment 1:

[0036] As Figure 1-2 shown, this embodiment includes a detection probe rod 10 for measuring the scour degree of the pile foundation. One end of the detection probe rod 10 in contact with the riverbed scour line 1 is provided with a plumb bob 11, and the other end is provided with a PVC plastic pointer 12 for indication. Scales corresponding to the pointer are provided on the pier column 2 within the moving range of the pointer 12. Two fixing devices 20 are provided between the detection probe rod and the pier column. Each fixing device 20 includes an anchor plate 21 and a ring sleeve 23 with the same radian as the pier column 2. Two hole positions for anchoring anchor bolts 22 are provided on the anchor plate 21, and the whole device can be stabilized on the pier column 2 through the anchor bolts 22; an opening 24 is provided on the outer side of the ring sleeve 23, and two extension parts 25 extend from the opening. The tightening degree of the extension parts 25 can be adjusted through a tightening bolt 26 to adjust the inner diameter of the ring sleeve 23, so as to ensure that after the ring sleeve 23 is inserted into the detection probe rod 10, the detection probe rod 10 can move freely up and down and maintain a vertical state.

[0037] The use process of this embodiment is as follows:

[0038] When installing this simple bridge pier pile foundation scour depth monitoring device, first drill holes at the hole positions corresponding to the anchor plate 21 on the pier column 2, place the anchor plate 21 at the drilled holes to fix the anchor bolts 22, then insert the detection probe rod 10 into the ring sleeve 23, and adjust the tightening bolt 25 to ensure that the detection probe rod 10 remains vertical and can slide freely up and down; place the plumb bob 11 on the riverbed scour line 1, and mark the scales on the pier column 2 near the corresponding position of the pointer 12. When the device works, as the riverbed scour line 1 drops due to water flow scour, the plumb bob 11 drops accordingly, driving the pointer 11 to point to different scales on the pier column 2, so as to visually display the scour depth of the pile foundation.

[0039] Embodiment 2:

[0040] As another implementation manner, as Figures 4-7As shown in the figure, this embodiment includes a detection probe rod 10 for measuring the scour degree of the pile foundation. One end of the detection probe rod 10 in contact with the riverbed scour line 1 is provided with a conical weight 11 with a larger upper part and a smaller lower part, and the other end is provided with a PVC plastic pointer 12 for indication. This embodiment also includes a fixing device 20, which is composed of three parts. One is three anchor plates 21 with the same radian as the pier 2, and the anchor plates 21 are fixed on the pier 2 through anchor bolts 22; the second is a chute bracket 32 for sleeving the detection probe rod 10, and the inner diameter of the chute bracket 32 is slightly larger than that of the detection probe rod 10; the third is a stainless steel protective sleeve 30 covering the detection probe rod 10. The chute bracket 32 is arranged between the anchor plate 21 and the protective sleeve 30, and the three are fixed by welding or integrally formed to ensure that the device can withstand the rapid water flow. A rectangular display window 31 is provided on the protective sleeve 30 to display the up and down movement of the pointer 12, and scales for displaying the scour depth are provided on both the left and right sides of the display window 31.

[0041] The specific use process of this embodiment is as follows:

[0042] When installing this simple pier pile foundation scour depth monitoring device, first assemble the detection probe rod 10 and the fixing device 20, insert the detection probe rod 10 into the three chute brackets 32, and then drill holes at the corresponding positions of the anchor plate 21 holes on the pier 2, place the anchor plate 21 at the drilling positions and fix the anchor bolts 22, that is, realize the rapid installation of the simple pier pile foundation scour depth monitoring device in this embodiment. When the device works, as the riverbed scour line 1 drops due to water flow scour, the conical weight 11 drops accordingly, driving the pointer 11 to point to the scales on both the left and right sides of the display window 31, so as to visually display the pile foundation scour depth.

Claims

1. A simple monitoring device for the scour depth of pier pile foundations, characterized in that: It includes a detection probe rod (10). One end of the detection probe rod (10) in contact with the riverbed scouring line (1) is provided with a plumb bob (11), and the other end is provided with a pointer (12). The detection probe rod (10) is connected to the pier column (2) through a fixing device (20), so that the detection probe rod (10) can move freely in the vertical direction. Scales corresponding to the pointer (12) are provided on the pier column (2).

2. The simple pier pile foundation scour depth monitoring device according to claim 1, characterized in that: The fixing device (20) includes an anchor plate (21) closely attached to the pier column (2). The anchor plate (21) is fixedly connected to the pier column (2) through anchor bolts (22).

3. The simple pier pile foundation scour depth monitoring device according to claim 2, characterized in that: The fixing device (20) includes an annular sleeve (23) for sleeving the detection probe rod (10).

4. The simple pier pile foundation scour depth monitoring device according to claim 3, characterized in that: The annular sleeve (23) is provided with an opening (24). Two extension parts (25) extend outward from the opening (24), and the extension parts (25) are fitted to each other through fastening bolts (26).

5. The simple pier pile foundation scour depth monitoring device according to claim 2, characterized in that: A protective sleeve (30) capable of covering the detection probe rod (10) is further provided on the anchor plate (21). A display window (31) for displaying the position of the pointer (12) is provided on the protective sleeve (30).

6. The simple pier pile foundation scour depth monitoring device according to claim 5, characterized in that: The display window (31) is rectangular.

7. The simple pier pile foundation scour depth monitoring device according to claim 6, characterized in that: Scales corresponding to the pointer (12) are further provided on both sides of the display window (31).

8. The simple pier pile foundation scour depth monitoring device according to claim 5, characterized in that: The fixing device (20) further includes a chute bracket (32) for sleeving the detection probe rod (10).

9. The simple pier pile foundation scour depth monitoring device according to claim 8, characterized in that: One end of the chute bracket (32) is fixedly connected to the anchor plate (21), and the other end is fixedly connected to the protective sleeve (30).

10. A simple pier pile foundation scour depth monitoring device according to any one of claims 1-9, characterized in that: The plumb bob (11) is conical with a larger upper part and a smaller lower part.

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