A measuring device and method for underwater diameter of pile foundation

Abstract

The present application relates to a measuring device and method for the underwater diameter of a pile foundation, and relates to the technical field of bridge maintenance. The measuring device comprises: a clamp, which is fixedly mounted on the part of the pile foundation located on the water surface; a measuring ring, which is slidably mounted on the part of the pile foundation located under the water surface, and the measuring ring is connected to the clamp through a measuring rope; a measuring feeler gauge, which comprises a wedge-shaped measuring part, the thickness of which gradually increases from one end to the other end, and the wedge-shaped measuring part is used to insert the gap between the measuring ring and the pile foundation from the thin end to measure the reduced value of the diameter of the pile foundation at the upper end face of the measuring ring. The measuring device and method for the underwater diameter of the pile foundation of the present application transfer the underwater pile diameter measurement to the water measurement, which not only does not cause any damage to the existing pile foundation, but also makes the measurement process simple and convenient, improves the measurement accuracy, reduces the measurement cost, and meets the operational requirements of measuring the underwater pile diameter after the pile foundation is flushed.

Description

Technical Field

[0001] The present application relates to the technical field of bridge maintenance, and in particular to a device and method for measuring the underwater diameter of a pile foundation. Background Art

[0002] At present, the surrounding soil of the pile foundation of the bridge in the water is easily eroded by the water flow, so the pile foundation is directly exposed to the water flow and eroded by the water flow, causing the concrete on the pile foundation surface to peel off and expose the reinforcement, while the pile foundation diameter is reduced, which seriously affects the bearing capacity of the pile foundation. In order to solve the problem of pile foundation erosion, a maintenance and reinforcement plan needs to be formulated according to the actual measured pile diameter of the pile foundation.

[0003] In the related art, the method for measuring the underwater diameter of the pile foundation is to arrange divers to measure the underwater pile diameter using a tape measure. However, when divers dive into the water for underwater measurement, not only is the underwater measurement result greatly affected by human factors, the accuracy is low, and the cost is high, which cannot meet the operational requirements of measuring the underwater pile diameter after the pile foundation is flushed. Summary of the invention

[0004] In view of the defects existing in the prior art, the purpose of the present application is to provide a measuring device and a measuring method for the underwater diameter of a pile foundation, so as to solve the problems of low measurement accuracy and high cost in the related technology.

[0005] The first aspect of the present application provides a device for measuring the underwater diameter of a pile foundation, comprising:

[0006] A clamp, which is fixedly mounted on the part of the pile foundation located above the water surface;

[0007] A measuring ring, which can be slidably sleeved on the part of the pile foundation located under the water surface, and the measuring ring is connected to the clamp through a measuring rope;

[0008] The measuring feeler gauge comprises a wedge-shaped measuring part, the thickness of which gradually increases from one end to the other end. The wedge-shaped measuring part is used to be inserted into the gap between the measuring ring and the pile foundation from the thin end to measure the reduction value of the diameter of the pile foundation at the upper end surface of the measuring ring.

[0009] In some embodiments, the measuring rope is provided with a scale, and the starting point of the scale of the measuring rope is located at the intersection of the measuring rope and the plane where the upper end surface of the measuring ring is located.

[0010] In some embodiments, the measuring feeler gauge further comprises a connecting rod connected to the thick end of the wedge-shaped measuring portion, the connecting rod comprising a fixed rod and a movable rod, one end of the fixed rod being fixedly connected to the wedge-shaped measuring portion and the other end being detachably connected to the movable rod.

[0011] In some embodiments, the distance from the bottom surface of the clamp to the top surface of the measuring ring is used as the set distance, and the sum of the lengths of the fixing rod and the wedge-shaped measuring portion is used as the fixed length;

[0012] The length of the movable rod is configured as the difference between the set distance and the fixed length.

[0013] In some embodiments, the wedge-shaped measuring portion includes a contact surface in contact with the pile foundation and an inclined surface opposite to the contact surface, and both the contact surface and the inclined surface are smooth surfaces.

[0014] In some embodiments, the clamp comprises:

[0015] Two semi-annular hoop bodies, the two semi-annular hoop bodies are butt-jointed to form a ring and connected by a first fastener;

[0016] The two rollers are symmetrically arranged on the opposite outer sides of the two semi-annular hoop bodies, and the measuring rope is wound around each roller.

[0017] In some embodiments, each semi-annular clamp body includes a semi-annular first body and first connecting plates extending outward from both ends of the above-mentioned first body, and first rubber pads are also provided on the relative inner sides of the two above-mentioned first bodies. The two first connecting plates of each semi-annular clamp body are respectively connected to the two first connecting plates of another measuring body, and a second rubber pad is sandwiched between the two connected first connecting plates.

[0018] In some embodiments, the measurement loop comprises:

[0019] Two semi-annular measuring bodies, the two measuring bodies are butted together to form an annular shape and connected by a second fastener;

[0020] Two lifting rings are symmetrically arranged on the opposite outer sides of the two measuring bodies, and one of the above-mentioned measuring ropes is fixed on each lifting ring.

[0021] In some embodiments, each measuring body includes a semi-circular second body and second connecting plates extending outward from both ends of the second body, the two second connecting plates of each measuring body are respectively connected to the two second connecting plates of another measuring body, and a third rubber pad is sandwiched between the two connected second connecting plates.

[0022] The second aspect of the present application further provides a measurement method based on the above-mentioned pile foundation underwater diameter measurement device, which comprises the steps of:

[0023] The clamp is fixedly mounted on the part of the pile foundation located above the water surface;

[0024] The measuring ring is slidably mounted on the part of the pile foundation under the water surface, and the measuring ring is lowered to the plane to be measured by a measuring rope, so that the plane to be measured and the upper end surface of the measuring ring are in the same plane;

[0025] Inserting the wedge-shaped measuring part of the measuring feeler gauge into the gap between the measuring ring and the pile foundation from the thin end, and obtaining the downward displacement of the wedge-shaped measuring part from the upper end surface of the measuring ring;

[0026] The reduction value of the diameter of the pile foundation at the plane to be measured is obtained according to the displacement and the size of the wedge-shaped measuring part.

[0027] The beneficial effects of the technical solution provided by this application include:

[0028] The embodiment of the present application provides a measuring device and method for the underwater diameter of a pile foundation. Since a clamp is fixedly mounted on the portion of the pile foundation located above the water surface, a measuring ring can be slidably mounted on the portion of the pile foundation located below the water surface, and the measuring ring is connected to the clamp by a measuring rope. When the measuring ring is lowered until its upper end surface is in the same plane as the plane to be measured, the wedge-shaped measuring part of the measuring feeler gauge is inserted into the gap between the measuring ring and the pile foundation from the thin end to obtain the downward displacement of the wedge-shaped measuring part from the upper end surface of the measuring ring. The reduction value of the diameter of the pile foundation at the plane to be measured can be obtained based on the displacement and the size of the wedge-shaped measuring part, thereby determining the underwater pile diameter of the current pile foundation. Therefore, transferring the underwater pile diameter measurement to the above-water measurement not only does not cause any damage to the existing pile foundation, but also simplifies and facilitates the measurement process, improves the measurement accuracy, reduces the measurement cost, and meets the operational requirements for measuring the underwater pile diameter after the pile foundation is flushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a schematic diagram of the installation of a device for measuring the underwater diameter of a pile foundation according to an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of a measuring feeler gauge according to an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the structure of the clamp of the embodiment of the present application;

[0033] Figure 4 for Figure 3 A top view of

[0034] Figure 5 This is a schematic diagram of the structure of a measuring ring according to an embodiment of the present application;

[0035] Figure 6 for Figure 5 A top view of

[0036] Figure 7 Schematic diagram of step S3 of the measurement method according to an embodiment of the present application.

[0037] Reference numerals:

[0038] 1. Pile foundation;

[0039] 2. Hoop; 21. Semi-annular hoop body; 22. Roller; 23. First rubber pad; 24. Second rubber pad; 25. First fastener;

[0040] 3. Measuring ring; 31. Measuring body; 32. Lifting ring; 33. Third rubber pad; 34. Second fastener;

[0041] 4. Measuring rope;

[0042] 5. Measuring feeler gauge; 51. Wedge-shaped measuring part; 52. Fixed rod; 53. Movable rod; 54. Contact surface; 55. Inclined surface;

[0043] 6. Bridge cap;

[0044] 7. Bridge piers. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0046] The embodiments of the present application provide a device and method for measuring the underwater diameter of a pile foundation, which can solve the problems of low measurement accuracy and high cost in the related art.

[0047] like Figure 1 As shown, the pile foundation underwater diameter measuring device of this embodiment is used to measure the pile diameter of the underwater part of the pile foundation 1, and is particularly suitable for underwater pile diameter measurement of concrete pile foundations washed by water flow. A bridge cap 6 is provided on the upper surface of the pile foundation 1, and a bridge pier 7 is provided on the upper surface of the bridge cap 6. The measuring device includes a clamp 2, a measuring ring 3, a measuring rope 4 and a measuring feeler gauge 5.

[0048] The clamp 2 is fixedly mounted on the part of the pile foundation 1 located above the water surface. The measuring ring 3 is slidably mounted on the part of the pile foundation 1 located below the water surface. The measuring ring 3 is connected to the clamp 2 through the measuring rope 4, that is, the measuring ring 3 is connected below the clamp 2 through the measuring rope 4.

[0049] The clamp 2 is a steel clamp. By tightly fitting the clamp 2 on the pile foundation 1, the measuring ring below it can be positioned using the measuring rope 4 without drilling holes or planting reinforcement bars on the pile foundation 1.

[0050] The measuring ring 3 is a modular measuring ring, and its inner diameter is the same as the designed pile foundation, that is, the same as the pile foundation diameter before being washed by water. When the pile foundation 1 is washed by water flow and the pile diameter becomes smaller, the measuring ring 3 can slide up and down on the surface of the pile foundation 1.

[0051] The measuring feeler gauge 5 includes a wedge-shaped measuring portion 51, the thickness of which gradually increases from one end to the other end. The wedge-shaped measuring portion 51 is used to insert the gap between the measuring ring 3 and the pile foundation 1 from the thin end to measure the reduction value of the diameter of the pile foundation at the upper end surface of the measuring ring 3, thereby determining the underwater pile diameter of the current pile foundation.

[0052] The measuring device of this embodiment transfers the underwater pile diameter measurement to the above-water measurement, which not only does not cause any damage to the existing pile foundation, but also simplifies and facilitates the measuring process, improves the measuring accuracy, reduces the measuring cost, and meets the operational requirements of measuring the underwater pile diameter after the pile foundation is flushed.

[0053] Preferably, the measuring rope 4 is provided with a scale, and the starting point of the scale of the measuring rope 4 is located at the intersection of the measuring rope 4 and the plane where the upper end surface of the measuring ring 3 is located.

[0054] like Figure 2 As shown, in this embodiment, the measuring feeler gauge 5 also includes a connecting rod connected to the thick end of the wedge-shaped measuring portion 51, and the connecting rod includes a fixed rod 52 and a movable rod 53. One end of the fixed rod 52 is fixedly connected to the wedge-shaped measuring portion 51, and the other end is detachably connected to the movable rod 53.

[0055] Furthermore, the distance from the bottom surface of the clamp 2 to the top surface of the measuring ring 3 is used as the set distance, and the sum of the lengths of the fixing rod 52 and the wedge-shaped measuring portion 51 is used as the fixed length;

[0056] The length of the movable rod 53 is configured to be the difference between the set distance and the fixed length.

[0057] Preferably, the fixed rod 52 and the movable rod 53 are both steel pipes, the fixed rod 52 is welded and fixed to the wedge-shaped measuring part 51, the end of the fixed rod 52 away from the wedge-shaped measuring part 51 is provided with an internal thread, and the end of the movable rod 53 close to the fixed rod 52 is provided with an external thread, and the fixed rod 52 and the movable rod 53 are connected by threaded matching. Therefore, the movable rod 53 is an extendable steel pipe, which can be manufactured by factory custom processing. Optionally, the movable rod 53 can also be formed by multiple short rods threadedly connected to each other to achieve the extension effect.

[0058] In this embodiment, the wedge-shaped measuring portion 51 includes a contact surface 54 in contact with the pile foundation 1 and an inclined surface 55 opposite to the contact surface 54 . Both the contact surface 54 and the inclined surface 55 are smooth surfaces.

[0059] like Figure 3 and Figure 4 As shown, in this embodiment, the clamp 2 includes two semi-annular clamp bodies 21 and two roller shafts 22 .

[0060] The two semi-annular hoop bodies 21 are butt-jointed to form an annular shape and are connected by a first fastener 25 .

[0061] The two rollers 22 are symmetrically arranged on the opposite outer sides of the two semi-annular hoop bodies 21, and the measuring rope 4 is wound around each roller 22. The length of the measuring rope 4 between the hoop 2 and the measuring ring 3 can be controlled by the rollers 22.

[0062] Furthermore, each semi-annular hoop body 21 includes a semi-annular first body and first connecting plates extending outward from both ends of the above-mentioned first body, and first rubber pads 23 are also provided on the relative inner sides of the two above-mentioned first bodies. The two first connecting plates of each semi-annular hoop body 21 are respectively connected to the two first connecting plates of the other semi-annular hoop body 21, and a second rubber pad 24 is sandwiched between the two connected first connecting plates.

[0063] In this embodiment, the first fastener 25 is a fastening bolt, and the first connecting plates of the two semi-annular hoop bodies 21 are butted and fixed by the fastening bolt. The first rubber pad 23 and the second rubber pad 24 can ensure that the hoop 2 is in close contact with the outer surface of the pile foundation 1.

[0064] like Figure 5 and Figure 6 As shown, in this embodiment, the measuring ring 3 includes two semi-annular measuring bodies 31 and two hanging rings 32 .

[0065] The two measuring bodies 31 are butt-jointed to form a ring and connected by a second fastener 34;

[0066] Two hanging rings 32 are symmetrically arranged on opposite outer sides of the two measuring bodies 31, and a measuring rope 4 is fixed on each hanging ring 32. The measuring rope 4 is fixed on the hanging ring 32 by a rope clamp.

[0067] Furthermore, each measuring body 31 includes a semi-circular second body and second connecting plates extending outward from both ends of the second body. The two second connecting plates of each measuring body 31 are respectively connected to the two second connecting plates of another measuring body 31, and a third rubber pad 33 is sandwiched between the two connected second connecting plates.

[0068] In this embodiment, the second fastener 34 is a fastening bolt, and the second connecting plates of the two measuring bodies 31 are connected to each other and then fixed by the fastening bolt. The third rubber pad 33 can ensure that the two measuring bodies 31 are tightly connected.

[0069] In this embodiment, the installation and removal of the clamp 2 and the measuring ring 3 are simple and easy to operate, and the diameter of the pile foundation after being washed by water can be quickly measured without damaging the pile foundation.

[0070] like Figure 7 As shown, the measuring method based on the measuring device for underwater diameter of pile foundation in the embodiment of the present application comprises the steps of:

[0071] S1. Fix the clamp 2 on the part of the pile foundation 1 located on the water surface.

[0072] S2. The measuring ring 3 is slidably mounted on the part of the pile foundation 1 under the water surface, and the measuring ring 3 is lowered to the plane to be measured through the measuring rope 4, so that the plane to be measured and the upper end surface of the measuring ring 3 are in the same plane.

[0073] S3. Insert the wedge-shaped measuring part 51 of the measuring feeler gauge 5 into the gap between the measuring ring 3 and the pile foundation 1 from the thin end, and obtain the downward displacement of the wedge-shaped measuring part 51 from the upper end surface of the measuring ring 3.

[0074] The length of the measuring feeler gauge 5 is the same as the distance from the bottom of the clamp 2 to the top of the measuring ring 3, and the downward displacement of the wedge-shaped measuring portion 51 from the upper end of the measuring ring 3 is the distance between the top of the measuring feeler gauge 5 and the bottom of the clamp 2.

[0075] S4. Obtain the reduced value of the diameter of the pile foundation 1 at the plane to be measured according to the displacement and the size of the wedge-shaped measuring part 51. Then, the difference between the reduced value of the designed pile foundation 1 and the diameter can be calculated as the measured pile diameter of the pile foundation 1.

[0076] In this embodiment, multiple measuring elevations can be pre-set, and the measuring ring 3 is lowered to each measuring elevation in turn through the measuring rope 4, so that the plane to be measured at the measuring elevation is in the same plane as the upper end surface of the measuring ring 3, and the roller 22 is fixed to prevent the vertical position of the measuring ring 3 from changing. Then, the measuring feeler gauge 5 can be inserted from top to bottom into the gap between the measuring ring 3 and the pile foundation 1 for measurement.

[0077] The measurement method of this embodiment is applicable to the measuring device of the underwater diameter of each of the above-mentioned pile foundations. The underwater measurement is transferred to the above-water measurement, and the value of the underwater pile diameter after the pile foundation is flushed can be obtained above water, which solves the difficult problem of underwater pile diameter measurement after the pile foundation is flushed. It can not only meet the underwater pile diameter measurement accuracy after the pile foundation is flushed, but also save measurement costs.

[0078] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0079] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0080] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A device for measuring the underwater diameter of a pile foundation, characterized in that: It includes: A hoop (2) is fixedly mounted on a portion of the pile foundation (1) located above the water surface; A measuring ring (3) is slidably sleeved on the part of the pile foundation (1) located under the water surface, the measuring ring (3) is connected to the clamp (2) via a measuring rope (4), and the plane to be measured and the upper end surface of the measuring ring (3) are in the same plane; A measuring feeler gauge (5) comprises a wedge-shaped measuring portion (51), the thickness of the wedge-shaped measuring portion (51) gradually increases from one end to the other end, the wedge-shaped measuring portion (51) is used to insert into the gap between the measuring ring (3) and the pile foundation (1) from the thin end, and obtain the displacement of the wedge-shaped measuring portion (51) downward from the upper end surface of the measuring ring (3), the displacement of the wedge-shaped measuring portion (51) downward from the upper end surface of the measuring ring (3) is the distance between the top surface of the measuring feeler gauge (5) and the bottom surface of the clamp (2), and the reduction value of the diameter of the pile foundation (1) located at the plane to be measured is obtained according to the displacement and the size of the wedge-shaped measuring portion (51); The measuring feeler gauge (5) further comprises a connecting rod connected to the thick end of the wedge-shaped measuring portion (51), the connecting rod comprising a fixed rod (52) and a movable rod (53), one end of the fixed rod (52) being fixedly connected to the wedge-shaped measuring portion (51), and the other end being detachably connected to the movable rod (53); The distance from the bottom surface of the clamp (2) to the top surface of the measuring ring (3) is used as the set distance, and the sum of the lengths of the fixing rod (52) and the wedge-shaped measuring portion (51) is used as the fixed length; The length of the movable rod (53) is configured as: the difference between the set distance and the fixed length; The clamp (2) comprises: Two semi-annular hoop bodies (21), the two semi-annular hoop bodies (21) are butt-jointed to form a ring and connected via a first fastener (25); Two rollers (22) are symmetrically arranged on opposite outer sides of two semi-annular hoop bodies (21), and the measuring rope (4) is wound around each roller (22); The measuring rope (4) is provided with a scale, and the starting point of the scale of the measuring rope (4) is located at the intersection of the measuring rope (4) and the plane where the upper end surface of the measuring ring (3) is located.

2. The device for measuring the underwater diameter of a pile foundation according to claim 1, characterized in that: The wedge-shaped measuring portion (51) comprises a contact surface (54) in contact with the pile foundation (1), and an inclined surface (55) opposite to the contact surface (54), and both the contact surface (54) and the inclined surface (55) are smooth surfaces.

3. The device for measuring the underwater diameter of a pile foundation according to claim 1, characterized in that: Each semi-annular hoop body (21) comprises a semi-annular first body and first connecting plates extending outwards from both ends of the first body, first rubber pads (23) are provided on the opposite inner sides of the two first bodies, the two first connecting plates of each semi-annular hoop body (21) are respectively connected to the two first connecting plates of the other semi-annular hoop body (21), and a second rubber pad (24) is sandwiched between the two connected first connecting plates.

4. The device for measuring the underwater diameter of a pile foundation according to claim 1, characterized in that: The measuring ring (3) comprises: Two semi-annular measuring bodies (31), the two measuring bodies (31) are butt-jointed to form an annular shape and connected via a second fastener (34); The two suspension rings (32) are symmetrically arranged on opposite outer sides of the two measuring bodies (31), and one measuring rope (4) is fixed on each suspension ring (32).

5. The device for measuring the underwater diameter of a pile foundation according to claim 4, characterized in that: Each measuring body (31) comprises a semi-circular second body and second connecting plates extending outwards from two ends of the second body, the two second connecting plates of each measuring body (31) are respectively connected to the two second connecting plates of another measuring body (31), and a third rubber pad (33) is sandwiched between the two connected second connecting plates.

6. A measuring method based on the pile foundation underwater diameter measuring device according to claim 1, characterized in that: It includes the steps of: The clamp (2) is fixedly mounted on the portion of the pile foundation (1) located above the water surface; A measuring ring (3) is slidably mounted on the part of the pile foundation (1) located under the water surface, and the measuring ring (3) is lowered to the plane to be measured by a measuring rope (4), so that the plane to be measured and the upper end surface of the measuring ring (3) are in the same plane; Inserting the wedge-shaped measuring part (51) of the measuring feeler gauge (5) into the gap between the measuring ring (3) and the pile foundation (1) from the thin end, obtaining the downward displacement of the wedge-shaped measuring part (51) from the upper end surface of the measuring ring (3), the downward displacement of the wedge-shaped measuring part (51) from the upper end surface of the measuring ring (3) being the distance between the top surface of the measuring feeler gauge (5) and the bottom surface of the clamp (2); The reduction value of the diameter of the pile foundation (1) located at the plane to be measured is obtained according to the displacement and the size of the wedge-shaped measuring part (51).

Images