Sliding type pile foundation scouring depth testing device

Abstract

The utility model discloses a sliding type pile foundation scouring depth testing device which comprises two oppositely-arranged supporting steel beams, the supporting steel beams are fixed to the top of a bridge pier through anchoring structures, and the two supporting steel beams are connected through a plurality of supporting cross braces. The anchoring structure is connected with a pulling rope, the tail end of the pulling rope is connected with a measuring hammer, a balance block is arranged on the pulling rope, a pulley is arranged on each supporting cross brace, and the pulling rope is arranged on the pulley; and the traction rope is connected with a sensor. According to the utility model, the measurement task of the scouring depth in a severe environment can be met, the measurement and construction difficulty is low, and the measurement data is accurate.

Description

Technical Field

[0001] The utility model relates to the field of bridge health detection, in particular to a sliding type pile foundation scouring depth testing device. Background Art

[0002] Under severe natural conditions such as floods and rainstorms, the piers and pile foundations below the bridge are increasingly affected by scouring. In order to measure the scouring depth of pile foundations, various technologies and methods have emerged. At present, the main methods for testing the scouring depth of pile foundations include the depth hammer method, optical positioning method, sonar method, ultrasonic method, sensor method, isotope method, magnetic label stone method, resistivity probe method, structural dynamic characteristics identification method and lateral pressure difference analysis method. However, in harsh environmental conditions, since it is impossible to go underwater for manual data collection, most of the above-mentioned pile foundation scouring depth testing methods have problems such as high measurement difficulty and low measurement accuracy. Utility Model Content

[0003] In order to solve the problem of difficulty in measuring pile foundation scour depth and low measurement accuracy in harsh environments, the utility model places a sensor on the pier top and uses the connection between the cantilever beam hanger and the heavy hammer placed on the bottom of the water to reflect the changes in the scour depth in real time, thereby solving the above problems.

[0004] The present application discloses a sliding type pile foundation scour depth testing device, comprising two supporting steel beams arranged opposite to each other, the supporting steel beams being fixed to the top of the bridge pier through an anchoring structure, and the two supporting steel beams being connected through a plurality of supporting cross braces;

[0005] The anchoring structure is connected to a traction rope, the end of the traction rope is connected to a plumb bob, a balance block is arranged on the traction rope, each supporting cross brace is arranged with a pulley, and the traction rope is arranged on the pulley;

[0006] The traction rope is connected with a sensor.

[0007] Preferably, the anchoring structure includes a gate-type steel bar that fixes the supporting steel beam to the top of the pier, and a wooden pad that passes through the supporting steel beam and is embedded in the pier; the anchoring structure also includes a vertical steel bar that is fixedly arranged on the top of the pier, the vertical steel bar is connected to an anchor steel plate, and the traction rope is connected to the anchor steel plate through an anchor clamp. On the one hand, the gate-type steel bar is used to fix the supporting steel beam to the top surface of the pier, and on the other hand, the wooden pad is used to prevent the steel beam from tilting. The vertical steel bar, anchor clamp, and anchor steel plate are used to anchor the end of the traction rope to prevent the displacement of the measuring hammer from changing too much, and to pull the sensor test device to the bottom of the pier.

[0008] Preferably, a portion of the supporting steel beam is fixed to the bridge pier through a plurality of gantry steel bars, and the portion of the supporting steel beam extending beyond the bridge pier is a steel beam cantilever, and the supporting cross brace is arranged at the steel beam cantilever. The purpose of the steel beam cantilever is to place the measuring hammer as far as possible outside the cap, so as to more realistically reflect the change of the scouring depth of the pile foundation.

[0009] Preferably, the supporting steel beam is composed of a plurality of steel beam sections, and each steel beam section includes a plurality of I-beams arranged side by side.

[0010] Preferably, the tops of the joints of the multiple sections of steel beams are connected by top plate splicing steel plates, and the top plate splicing steel plates are fixed to the tops of the steel beams by top plate bolts.

[0011] Preferably, the side surfaces of the joints of the multiple sections of steel beams are connected by web splicing steel plates, and the web splicing steel plates are fixed to the side surfaces of the steel beams by web bolts.

[0012] Preferably, an open annular stiffening rib is provided at the connection between the supporting cross brace and the supporting steel beam.

[0013] Preferably, the balancing block is arranged between two pulleys close to the bridge pier, the pulleys close to the bridge pier jointly support the balancing block, and the balancing block is arranged on the traction rope through a fixing hook.

[0014] Beneficial effects of the utility model:

[0015] (1) The present invention is suitable for measuring the scouring depth of pile foundations and can adapt to measurement work in various harsh environments, and has strong versatility.

[0016] (2) The test device is made of conventional materials, has a reliable design, and has low measurement difficulty, which can ensure high-safety measurement conditions. In addition, the sensor can be used to monitor the measurement data in real time, reflecting the changes in the scouring depth more timely, accurately, and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A top view of a pile foundation scour depth testing device according to an embodiment of the utility model;

[0018] Figure 2 It is a right view of the pile foundation scour depth testing device according to an embodiment of the utility model;

[0019] Figure 3 It is an upper enlarged view of the right side view of the pile foundation scour depth testing device according to an embodiment of the utility model;

[0020] Figure 4 It is a front view of a pile foundation scour depth testing device according to an embodiment of the utility model;

[0021] Figure 5It is an upper enlarged view of the front view of the pile foundation scour depth testing device according to an embodiment of the utility model.

[0022] The reference numerals are as follows:

[0023] 1-vertical steel bars, 2-anchor clips, 3-anchor steel plates, 4-sensors, 5-wooden pads, 6-gantry steel bars, 7-traction ropes, 8-bridge piers, 9-top plate bolts, 10-top plate splicing steel plates, 11-fixing hooks, 12-balance blocks, 13-pulleys, 14-supporting cross braces, 15-supporting steel beams, 16-booms, 17-web splicing steel plates, 18-web bolts, 19-perforated annular stiffeners. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and examples.

[0025] The present application embodiment discloses a sliding type pile foundation scour depth testing device, such as Figure 1 The structure shown includes two supporting steel beams 15 arranged opposite to each other, the supporting steel beams 15 are fixed to the top of the bridge pier 8 through an anchoring structure, and the two supporting steel beams 15 are connected by multiple supporting cross braces 14; the anchoring structure is connected with a traction rope 7, the traction rope 7 is a steel wire rope, the end of the traction rope 7 is connected with a hammer 16, a balance block 12 is arranged on the traction rope 7, each supporting cross brace 14 is provided with a pulley 13, and the traction rope 7 is arranged on the pulley 13; the traction rope 7 is connected with a sensor 4. The hammer 16 is placed on the riverbed, and as the scouring depth changes, the height of the hammer 16 will change, and the traction rope 7 will be pulled, and the traction rope 7 will cause the balance block 12 to rise and fall, and finally the change will be transferred to the sensor 4, so as to feedback the change of the scouring depth near the pile foundation in real time.

[0026] like Figure 1 and Figure 3 The anchoring structure shown includes a portal steel bar 6 that fixes the supporting steel beam 15 on the top of the pier, and a wooden pad 5 that passes through the supporting steel beam 15 and is embedded in the bottom of the pier 8; the anchoring structure also includes a vertical steel bar 1 fixedly set on the top of the pier, the vertical steel bar 1 is connected to the anchor steel plate 3, and the traction rope 7 is connected to the anchor steel plate 3 through the anchor clamp 2.

[0027] The gate-type steel bars 6 and wooden pads 5 are used to fix the supporting steel beam 15. On the one hand, the gate-type steel bars 6 are used to fix the supporting steel beam 15 to the top surface of the pier. On the other hand, the wooden pads 5 are used to prevent the supporting steel beam 15 from tilting by using the weight of the bridge. The vertical steel bars 1, anchor clips 2 and anchor steel plates 3 are used to anchor the ends of the steel wire ropes to prevent the displacement of the hammer 16 from being too large, and to pull the sensor 4 to the bottom of the pier.

[0028] A portion of the support steel beam 15 is fixed to the bridge pier through a plurality of gate-type steel bars 6. The portion of the support steel beam 15 extending beyond the bridge pier is a steel beam cantilever, and the support cross brace 14 is arranged at the steel beam cantilever. An open annular stiffening rib 19 is arranged at the connection between the support cross brace 14 and the support steel beam 15. The purpose of the steel beam cantilever is to place the measuring hammer 16 as far as possible outside the bridge pier, so as to more realistically reflect the change of the scouring depth of the pile foundation.

[0029] The supporting steel beam 15 is composed of multiple sections of steel beams, each of which includes multiple I-beams arranged side by side. Figure 1 As shown, the top of the joint of the multiple sections of steel beams is connected by a top plate splicing steel plate 10, and the top plate splicing steel plate 10 is fixed to the top of the steel beam by a top plate bolt 9. Figure 5 As shown, the side surfaces of the joints of the multiple sections of steel beams are connected by web splicing steel plates 17, and the web splicing steel plates 17 are fixed to the side surfaces of the steel beams by web bolts 18.

[0030] The balance block 12 is arranged between two pulleys 13 near the bridge pier. Figure 2 and Figure 4 As shown, the balance block 12 is arranged on the traction rope 7 through the fixing hook 11. The sliding in this embodiment mainly relies on multiple sets of pulleys 13 installed on the supporting cross brace 14. The farthest pulley 13 supports the plumb bob 16, and the pulleys 13 close to the pier jointly support the balance block 12. The design of multiple pulleys disperses the load and reduces the force on the single point of the supporting steel beam 15, which is beneficial to the safety of the structure.

[0031] In summary, the sliding type pile foundation scour depth test device disclosed in the present application utilizes the support steel beam 15 placed on the top of the pier to connect the sensor 4 on the top of the pier with the hammer 16 placed on the bottom of the water by means of a traction rope 7, that is, the sensor 4 is kept away from the harsh environment to ensure the safety of the transmission environment. Moreover, because the hammer 16 is in direct contact with the bottom of the scour under water, the measured scour data is the most real and accurate. On the other hand, the support steel beam 15 of the force-bearing body of the device adopts I-beams of common specifications and is connected by means of splicing plates and bolts. The construction is relatively convenient and the materials are easy to obtain. At the same time, the area supporting the traction rope 7 adopts a multi-pulley system, which can better disperse the load of the hammer 16 and reduce the risk of large deformation of the support steel beam 15 due to single-point force. In the steel beam anchoring area, the gate-type steel bar 6 is embedded and anchored with the top of the pier, and then the anchoring end of the support steel beam 15 is contacted with the bottom of the bridge with the help of a wooden pad 5, which further prevents the steel beam from tilting and ensures the safety of the device. Therefore, the sliding type pile foundation scour depth testing device of the present application has strong applicability, simple structure, convenient construction, safe construction, accurate measurement, and can meet the scour depth measurement task in harsh environments.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sliding type pile foundation scour depth testing device, characterized in that: It comprises two supporting steel beams (15) arranged opposite to each other, wherein the supporting steel beams (15) are fixed to the top of the bridge pier through an anchoring structure, and the two supporting steel beams (15) are connected through a plurality of supporting cross braces (14); The anchoring structure is connected to a traction rope (7), the end of the traction rope (7) is connected to a measuring hammer (16), a balancing block (12) is arranged on the traction rope (7), each supporting cross brace (14) is provided with a pulley (13), and the traction rope (7) is arranged on the pulley (13); The traction rope (7) is connected to a sensor (4).

2. The sliding type pile foundation scour depth testing device according to claim 1 is characterized in that: The anchoring structure comprises a gate-type steel bar (6) for fixing the supporting steel beam (15) on the top of the bridge pier, and a wooden pad (5) passing through the supporting steel beam (15) and embedded in the bridge pier; The anchoring structure also includes a vertical steel bar (1) fixedly arranged on the top of the pier, the vertical steel bar (1) is connected to an anchoring steel plate (3), and the traction rope (7) is connected to the anchoring steel plate (3) via an anchoring clamp (2).

3. The sliding type pile foundation scour depth testing device according to claim 2, characterized in that: A portion of the supporting steel beam (15) is fixed to the bridge pier via a plurality of gate-type steel bars (6); the portion of the supporting steel beam (15) extending beyond the bridge pier is a steel beam cantilever; and the supporting cross brace (14) is arranged at the steel beam cantilever.

4. The sliding type pile foundation scour depth testing device according to claim 3 is characterized in that: The supporting steel beam (15) is composed of a plurality of steel beam sections, each of which comprises a plurality of I-beams arranged side by side.

5. The sliding type pile foundation scour depth testing device according to claim 4, characterized in that: The tops of the joints of the multiple sections of steel beams are connected by a top plate splicing steel plate (10), and the top plate splicing steel plate (10) is fixed to the top of the steel beam by top plate bolts (9).

6. The sliding type pile foundation scour depth testing device according to claim 5, characterized in that: The side surfaces of the joints of the multiple sections of steel beams are connected by web splicing steel plates (17), and the web splicing steel plates (17) are fixed to the side surfaces of the steel beams by web bolts (18).

7. The sliding type pile foundation scour depth testing device according to claim 6, characterized in that: An open annular stiffening rib (19) is provided at the connection between the supporting cross brace (14) and the supporting steel beam (15).

8. The sliding type pile foundation scour depth testing device according to claim 7, characterized in that: The balance block (12) is arranged between two pulleys (13) close to the bridge pier, and the balance block (12) is arranged on the traction rope (7) through a fixing hook (11).

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