Bridge pier on-line safety monitoring device

Abstract

The utility model discloses a bridge pier on-line safety monitoring device which comprises a scour depth monitoring unit and an anchoring assembly, and the scour depth monitoring unit is fixed on a riverbed through the anchoring assembly. The anchoring assembly comprises a punching pile sleeve and a connecting rod, a plurality of tensile rods capable of horizontally moving are arranged in the punching pile sleeve, the tensile rods are used for horizontally stretching out to be inserted into a riverbed when the punching pile sleeve is in place, and the connecting rod is arranged in the punching pile sleeve and can axially move along the punching pile sleeve and drive the tensile rods to horizontally stretch out to be embedded into the riverbed. According to the utility model, by arranging the anchoring assembly comprising the tensile rod, when the scouring depth monitoring unit is anchored, the tensile rod horizontally extends out to be fixed with a riverbed; in the flood period of a big river, due to the action of the tensile rod, the punching pile sleeve and the connecting rod can be prevented from being pulled out, and the working environment of the scouring depth monitoring unit can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge monitoring device technical field, especially in a kind of pier on-line safety monitoring device. BACKGROUND

[0002] River-crossing bridge is an important part of modern transportation network, and is crucial to national economy and social development. After the bridge pier is built in the natural river, the water flow around the pier is severely disturbed, forming three-dimensional, unsteady flow structures such as downflow and horseshoe vortex. These structures significantly increase the sediment carrying capacity of the water flow, leading to local scour of the riverbed around the pier. Especially during the flood season, due to the large flow and fast flow velocity, the riverbed around the pier is easily over-scoured, exposing the pier foundation and threatening the safety of the bridge, and even causing major accidents such as bridge collapse and loss of life. Therefore, real-time monitoring of the local scour depth around the pier is an important measure to ensure the safe operation of the bridge, and has been increasingly valued by bridge authorities.

[0003] In order to realize the real-time monitoring of the local scour depth of the pier, a large number of specific technologies, methods and devices have been proposed by the majority of scientific and technical workers. According to the relative position relationship between the measuring device and the riverbed around the pier, the existing technologies can be classified into three categories: embedded, contact and non-contact.

[0004] The structure diagram of the embedded local scour depth monitoring device in the prior art (see patent CN106052604B for details). This device embeds a scour depth sensor in the riverbed around the pier, and the sensor types include fiber Bragg grating, time domain reflectometer, piezoelectric sensor, etc. The main advantage of the embedded scour depth monitoring device is that the scour depth sensor can accurately and reliably sense the changes in the riverbed elevation, thereby providing accurate scour depth information. However, it has the following disadvantages: the anchoring strength of the embedded sensor is limited, and during the flood season of large rivers, the sensor can be easily uprooted by the flood, losing its monitoring capability. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of the prior art, and provides a pier on-line safety monitoring device. By setting an anchoring assembly containing a tensile rod, the tensile rod is horizontally extended and fixed to the riverbed during anchoring of the scour depth monitoring unit. During the flood season of large rivers, the tensile rod can prevent the perforated pile sleeve and connecting rod from being pulled out, effectively ensuring the working environment of the scour depth monitoring unit.

[0006] The utility model aims to achieve the following technical solutions:

[0007] A pier on-line safety monitoring device, comprising a scour depth monitoring unit and an anchoring assembly, the scour depth monitoring unit being fixed to the riverbed by the anchoring assembly;

[0008] The anchoring assembly comprises a punching pile sleeve and a connecting rod, the punching pile sleeve is internally provided with a plurality of horizontally movable tension rods, the tension rods are used for horizontally extending to be embedded in a riverbed when the punching pile sleeve is in place, and the connecting rod is arranged in the punching pile sleeve and can be axially moved along the punching pile sleeve and drive the tension rods to horizontally extend to be embedded in the riverbed.

[0009] Further, the punching pile sleeve is provided with an axial sliding hole, the tension rods are coaxially arranged in the sliding hole, a first end of the tension rod is located inside a side of the punching pile sleeve, a second end of the tension rod is provided with an upward inclined surface, and the tension rod is externally provided with an elastic member.

[0010] The upper end of the connecting rod is fixed with the scouring depth monitoring unit, and the lower end of the connecting rod is provided with a driving cone, the gradient of the driving cone is matched with the inclined surface.

[0011] Further, the elastic member is a spring.

[0012] Further, the punching pile sleeve comprises a connecting body and an anchor head, the connecting body is a cuboid structure, the anchor head is a quadrangular pyramid structure, the connecting body is provided with a connecting hole matched with the connecting rod in the middle, and the hole wall of the connecting hole is provided with an internal thread.

[0013] The connecting rod is provided with an external thread, and the connecting rod is threadedly connected with the connecting body.

[0014] Further, the connecting body and the anchor head are an integrated structure.

[0015] Further, the tension rod is a threaded steel bar.

[0016] Further, the first end of the tension rod is a conical structure.

[0017] Further, the scouring depth monitoring unit comprises a grating, a connecting column, an optical fiber vibrating string and a polyhedral mass block.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model discloses an anchoring assembly comprising a tension rod, when the scouring depth monitoring unit is anchored, the tension rod horizontally extends to be fixed with the riverbed, during the flood period of a large river, the punching pile sleeve and the connecting rod can be prevented from being pulled out due to the action of the tension rod, and the working environment of the scouring depth monitoring unit can be effectively ensured. DRAWINGS

[0020] Figure 1 It is the whole structure schematic view of the bridge pier on-line safety monitoring device in the embodiment of the utility model;

[0021] Figure 2 Figure 3 is a schematic view of the connection relationship between the scour depth monitoring unit and the connecting rod;

[0022] Figure 3 Figure 4 is a perspective view of the anchoring assembly;

[0023] Figure 4 Figure 5 is a top view of the anchoring assembly;

[0024] Figure 5 Figure 6 is a sectional view along A-A direction in Figure 5; Figure 4 Figure 7 is a sectional view along B-B direction in Figure 5;

[0025] Figure 6 Figure 8 is a sectional view along C-C direction in Figure 5; Figure 5 Figure 9 is an enlarged schematic view of the local part B in Figure 8;

[0026] In the figure, 1 is a riverbed, 2 is a scour depth monitoring unit, 3 is an anchoring assembly, 4 is a punching pile sleeve, 5 is a sliding hole, 6 is a tensile rod, 7 is an elastic member, 8 is a driving cone, 9 is a connecting body, 10 is an anchor head, 11 is an optical grating, 12 is a connecting column, 13 is an optical fiber vibrating string, 14 is a polyhedral mass block, and 15 is a connecting rod. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] Referring to Figures 1-6 , the present application provides a technical solution:

[0029] Embodiment:

[0030] Swiss Figures 1-6 As shown in the figure, an online safety monitoring device for a bridge pier includes a scour depth monitoring unit 2 and an anchoring assembly 3, and the scour depth monitoring unit 2 is fixed on the riverbed 1 through the anchoring assembly 3. The scour depth monitoring unit 2 includes an optical grating 11, a connecting column 12, an optical fiber vibrating string 13, and a polyhedral mass block 14. The connection mode of the scour depth monitoring unit 2 and the connecting rod 15, the specific structure of the scour depth monitoring unit 2, and the principle are prior art, and (for details, refer to “Bridge Foundation Scour Depth Monitoring Sensor and Monitoring Mechanism Based on Optical Fiber Vibrating String 13” by Niu Zifan), which will not be described here.

[0031] The anchoring assembly 3 includes a drilled pile sleeve 4 and a connecting rod 15. The drilled pile sleeve 4 is provided with a plurality of horizontally movable tensile rods 6. The tensile rods 6 are used to extend horizontally to be inserted into the riverbed 1 when the drilled pile sleeve 4 is in place. The connecting rod 15 is disposed in the drilled pile sleeve 4. The connecting rod 15 can move along the axial direction of the drilled pile sleeve 4 and drive the tensile rods 6 to extend horizontally and be buried in the riverbed 1.

[0032] like Figure 6 As shown, the drilled pile sleeve 4 is provided with a horizontal sliding hole 5, and the tensile rod 6 is coaxially slidably disposed in the sliding hole 5. The first end of the tensile rod 6 is located on the inner side of the outer side of the drilled pile sleeve 4, and the second end of the tensile rod 6 is provided with an upward inclined surface. An elastic element 7, which is a spring, is provided on the outside of the tensile rod 6. The other two ends are respectively fixed to the hole wall of the sliding block and the tensile rod 6.

[0033] like Figure 2 As shown, the upper end of the connecting rod 15 is fixed to the scouring depth monitoring unit 2, and the lower end of the connecting rod 15 is provided with a driving cone 8, the slope of which is adapted to the inclined surface.

[0034] The drilled pile sleeve 4 includes a connector 9 and an anchor head 10. The connector 9 is a cuboid structure, and the anchor head 10 is a square pyramid structure. The connector 9 has a connecting hole in the middle that is adapted to the connecting rod 15. The wall of the connecting hole is provided with internal threads.

[0035] The connecting rod 15 is provided with external threads, and the connecting rod 15 is threadedly connected to the connecting body 9.

[0036] The connector 9 and the anchor head 10 are an integrated structure.

[0037] The tensile rod 6 is a threaded steel bar.

[0038] The first end of the tensile rod 6 has a tapered structure. This facilitates the horizontal movement of the tensile rod 6 into the riverbed 1.

[0039] Working principle: First, connect the scour depth monitoring unit 2 and the anchoring component 3. The scour depth monitoring unit 2 can be welded and fixed to the connecting rod 15. Then, the connecting rod 15 is threaded into the drilled pile sleeve 4, and the driving cone 8 of the connecting rod 15 is positioned above the tensile rod 6.

[0040] After the conventional anchoring assembly 3 driving action, when the anchoring assembly 3 is driven into the riverbed 1 to a specified depth, the pile sleeve 4 is in place, then the connecting rod 15 is rotated downward, the connecting rod 15 moves downward along the axis, the process drives the conical body 8 to extrude the inclined surface of the tensile rod 6, the tensile rod 6 is extruded by the conical body 8 to extend horizontally to the riverbed 1, and finally firmly inserted into the riverbed 1. During the flood period of a large river, due to the effect of the tensile rod 6, the pile sleeve 4 and the connecting rod 15 can be prevented from being pulled out, and the working environment of the scouring depth monitoring unit 2 can be effectively ensured.

[0041] The above only describes the preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein by the above teachings or related technical or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the claims of the present application.

Claims

1. A bridge pier on-line safety monitoring device, comprising an erosion depth monitoring unit and an anchoring assembly, characterized in that: The scouring depth monitoring unit is fixed on the riverbed through an anchoring assembly; The anchoring assembly comprises a punching pile sleeve and a connecting rod, the punching pile sleeve is internally provided with a plurality of horizontally movable tension rods, the tension rods are used to horizontally extend into the riverbed when the punching pile sleeve is in place, and the connecting rod is arranged in the punching pile sleeve and can axially move along the punching pile sleeve and drive the tension rods to horizontally extend into the riverbed.

2. The bridge pier on-line safety monitoring device according to claim 1, characterized in that: The punching pile sleeve is provided with an axis horizontal sliding hole, the tension rods are coaxially arranged in the sliding hole, a first end of the tension rod is located inside a lateral surface of the punching pile sleeve, a second end of the tension rod is provided with an upward inclined surface, and an elastic member is arranged outside the tension rod. An upper end of the connecting rod is fixed with the scouring depth monitoring unit, and a lower end of the connecting rod is provided with a driving conical surface, the inclination of the driving conical surface is matched with the inclination of the inclined surface.

3. The bridge pier on-line safety monitoring device according to claim 2, characterized in that: The elastic member is a spring.

4. The bridge pier on-line safety monitoring device according to claim 2, characterized in that: The punching pile sleeve comprises a connecting body and an anchor head, the connecting body is a cuboid structure, the anchor head is a quadrangular pyramid structure, a middle part of the connecting body is provided with a connecting hole matched with the connecting rod, and an inner wall of the connecting hole is provided with an internal thread. An outer thread is arranged on the connecting rod, and the connecting rod is threadedly connected with the connecting body.

5. The bridge pier on-line safety monitoring device according to claim 4, characterized in that: The connecting body and the anchor head are in an integrated structure.

6. The bridge pier on-line safety monitoring device according to claim 4, characterized in that: The tension rod is a threaded steel bar.

7. The bridge pier on-line safety monitoring device according to claim 4, characterized in that: The first end of the tension rod is a conical structure.

8. The bridge pier on-line safety monitoring device according to claim 1, characterized in that: The scouring depth monitoring unit comprises a grating, a connecting column, an optical fiber vibrating string and a polyhedral mass.

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