A device and method for measuring verticality of steel pipe pile

Abstract

The invention discloses a device and method for measuring the verticality of a steel pipe pile, comprising a support frame, a graduated disc, an infrared emitting device and a prism; the graduated disc is fixed on the support frame, an angle scale is arranged on the end face of the graduated disc, the end face of the graduated disc is located on a vertical plane, the infrared emitting device is installed below the graduated disc, the output end of the infrared emitting device faces downward, the center of the end face of the graduated disc is connected to a prism through a first connecting rope, the prism is circular, one end of a plurality of soft connecting belts is evenly connected to the circumference of the prism, the other end of the soft connecting belt is connected to an arc-shaped connecting tube, an arc-shaped connecting rod is slidably connected between adjacent arc-shaped connecting tubes, and the arc-shaped connecting tube and the arc-shaped connecting rod are connected to form a ring. The structure is simple, and the verticality of a small-diameter steel pipe pile can be measured.

Description

Technical Field

[0001] The invention belongs to the field of pile foundation construction and relates to a device and method for measuring the verticality of a steel pipe pile. Background Art

[0002] In recent years, with the continuous advancement of soft soil foundation construction technology, small-diameter steel pipe piles have become increasingly popular among construction units and design units. Small-diameter steel pipe piles are widely used due to their high bearing capacity and convenient construction. However, the piles have serious problems such as bending and deformation of the pile body during construction and bearing capacity lower than the design value. Especially during construction, improper operation of construction personnel often causes the pile body to tilt. It is precisely because of the occurrence of the above situation that not only the construction progress will be delayed, but also the project cost expenditure will be increased. In order to avoid the above situation, it is very necessary to measure the verticality of the pile.

[0003] However, small-diameter steel pipe piles have a small diameter, and the verticality measuring devices used in existing projects are often large in size and complex in structure. They are only suitable for measuring the verticality of large-diameter holes, but cannot measure the verticality of small-diameter steel pipe piles. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a steel pipe pile verticality measuring device and method, which has a simple structure and can measure the verticality of small-diameter steel pipe piles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A steel pipe pile verticality measuring device comprises a support frame, a graduated disc, an infrared emitting device and a prism;

[0007] The scale disk is fixed on the support frame, and an angle scale is arranged on the end face of the scale disk. The end face of the scale disk is located on a vertical plane. The infrared emitting device is installed below the scale disk, and the output end of the infrared emitting device faces downward. A prism is connected to the center of the end face of the scale disk through a first connecting rope. The shape of the prism is circular, and one end of a plurality of soft connecting belts is evenly connected to the circumference of the prism. The other end of the soft connecting belt is connected to an arc-shaped connecting tube. An arc-shaped connecting rod is slidably connected between adjacent arc-shaped connecting tubes, and the arc-shaped connecting tube and the arc-shaped connecting rod are connected to form a ring.

[0008] Preferably, a level is provided at the bottom of the graduated disk, and the graduated disk is perpendicular to the plane where the level is located.

[0009] Preferably, a vertical level is provided on the side of the graduated disk.

[0010] Preferably, the infrared emitting device is connected to the supporting frame via a universal joint.

[0011] Preferably, the first connecting rope is divided into at least three branches at one end close to the prism and evenly connected to the arc-shaped connecting tube.

[0012] Preferably, the center position of the end surface of the scale disk is connected to a plumb bob via a second connecting rope.

[0013] Preferably, the support frame includes at least three support legs, the support legs are two mutually nested and slidably connected pipes, and the outer pipe is radially connected with bolts on the circumference close to the inner pipe.

[0014] A method for measuring the verticality of a steel pipe pile based on any one of the above-mentioned devices comprises the following steps:

[0015] Step 1: Place the support frame at the pile mouth of the pile to be tested, with the scale disk located directly above the pile mouth and the end face of the scale disk located on the vertical plane;

[0016] Step 2: Adjust the outer ring of the prism to a diameter that is the same as the inner wall diameter of the pile to be measured, and place the prism into the pile to be measured, with the prism placed horizontally;

[0017] Step three: the infrared emitting device emits laser to the prism. The laser is reflected by the prism and emitted from the pile mouth. The reflected laser passes through the center of the end face of the scale disk. The scale of the reflected laser is read, which is the verticality of the pile to be measured.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The measuring device of the present invention can adapt to the calibers of different steel pipe piles through the arc-shaped connecting tube with adjustable diameter outside the prism. The infrared emitting device emits laser, which is reflected to the scale disk through the prism. The verticality of the steel pipe pile can be directly read through the scale where the laser is located. The device has a simple structure and is easy to carry.

[0020] Furthermore, the level ensures that the graduated disk is always perpendicular to the horizontal plane, thus ensuring measurement accuracy.

[0021] Furthermore, the vertical level ensures that the zero mark of the graduated disk is always in the vertical direction, thus ensuring measurement accuracy.

[0022] Furthermore, the infrared emitting device can be flexibly rotated through a universal joint, so as to facilitate irradiating the laser at the center of the prism.

[0023] Furthermore, the first connecting rope is divided into at least three branches connected to the arc-shaped connecting tube, so as to ensure that the prism is always parallel to the horizontal plane.

[0024] Furthermore, by adjusting the length of the supporting legs by tightening the bolts, the horizontality of the scale disk can be adjusted to ensure measurement accuracy.

[0025] The measuring method of the present invention can adapt to different diameters of steel pipe piles by adjusting the arc-shaped connecting tube outside the prism. The infrared emitting device emits laser, which is reflected to the scale disk through the prism. The verticality of the steel pipe pile can be directly read through the scale where the laser is located, and the measurement is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the measuring device of the present invention;

[0027] Figure 2 It is a schematic diagram of the prism structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the graduated disc of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the universal joint of the present invention.

[0030] Among them: 1- scale disk; 2- level; 3- infrared emitting device; 4- plumb bob; 5- prism; 6- supporting leg; 7- flexible connecting belt; 8- arc connecting tube; 9- arc connecting rod; 10- vertical level; 11- universal joint. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0032] like Figure 1 As shown, the steel pipe pile verticality measuring device of the present invention comprises a support frame, a graduated disc 1, a level 2, an infrared emitting device 3, a prism 5 and a plumb bob 4.

[0033] The graduated disk 1 is fixed on the support frame, and the end face of the graduated disk 1 is located on the vertical plane. Figure 3 As shown, an angle scale is arranged on the end face of the scale disk 1, and the angle scale is arranged around the circumference of the end face of the scale disk 1. A vertical level 10 is arranged on the side of the scale disk 1. A level 2 is arranged at the bottom of the scale disk 1, and the scale disk 1 is perpendicular to the plane where the level 2 is located. The vertical level 10 cooperates with the level 2 to achieve precise leveling of the entire device. The infrared emitting device 3 is installed below the level 2, and the output end of the infrared emitting device 3 faces downward. The center position of the end face of the scale disk 1 is connected to a prism 5 through a first connecting rope, and the center position of the end face of the scale disk 1 is connected to a plumb bob 4 through a second connecting rope.

[0034] like Figure 2As shown, the prism 5 is circular in shape, and one end of a plurality of soft connection belts 7 are evenly connected to the circumference of the prism 5, and the other end of the soft connection belt 7 is connected to an arc-shaped connecting tube 8, and an arc-shaped connecting rod 9 is slidably connected between adjacent arc-shaped connecting tubes 8. The arc-shaped connecting tube 8 and the arc-shaped connecting rod 9 are connected to form a ring, and the diameter of the ring can be increased or decreased by slidingly matching the arc-shaped connecting tube 8 and the arc-shaped connecting rod 9, so that it can be adjusted according to the diameter of the steel pipe pile, and the ring formed by the arc-shaped connecting tube 8 and the arc-shaped connecting rod 9 has only a contact line when contacting the inner wall of the steel pipe pile, and the inner wall has little effect on the ring, thereby reducing interference with the prism 5. The first connecting rope is divided into at least three branches near one end of the prism 5, and is evenly connected to the arc-shaped connecting tube 8 to ensure that the prism 5 is always parallel to the horizontal plane.

[0035] like Figure 4 As shown, the infrared emitting device is connected to the support frame via a universal joint 11, the universal joint 11 is fixed on the support frame, and the infrared emitting device is connected to the universal joint 11. The universal joint 11 can be flexibly rotated to facilitate irradiating the laser at the center of the prism 5.

[0036] The bottom of the support frame includes at least three support legs 6, which are two pipes nested and slidably connected to each other. The outer pipe is radially connected with bolts on the circumference close to the inner pipe. The length of the support legs 6 is adjusted by tightening the bolts, so the horizontality of the scale disk 1 can be adjusted to ensure measurement accuracy.

[0037] The steel pipe pile verticality measuring device of the present invention comprises the following steps when in use:

[0038] Step 1: Place the support frame at the pile mouth of the pile to be tested, with the graduated disk 1 located directly above the pile mouth. By observing the vertical level 10 and the level 2, adjust the length of individual support legs 6 so that the end face of the graduated disk 1 is located on the vertical plane.

[0039] Step 2: adjust the length of the arc connecting rod 9 extending into the arc connecting tube 8, adjust the diameter of the ring outside the prism 5 to be the same as the diameter of the inner wall of the pile to be tested, put the prism 5 into the pile to be tested, and place the prism 5 horizontally.

[0040] Step three, the infrared emitting device 3 emits a laser toward the center of the prism 5. The laser is reflected by the center of the prism 5 and emitted from the pile mouth. The laser to be reflected passes through the center of the end face of the graduated disk 1. The scale of the reflected laser or the angle between the scale of the reflected laser and the second connecting rope is read, which is the verticality of the pile to be measured.

[0041] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A steel pipe pile verticality measuring device, characterized in that: It comprises a support frame, a graduated disc (1), an infrared emitting device (3) and a prism (5); The scale disk (1) is fixed on a support frame, an angle scale is arranged on the end face of the scale disk (1), the end face of the scale disk (1) is located on a vertical plane, an infrared emitting device (3) is installed below the scale disk (1), the infrared emitting device (3) is connected to the support frame via a universal joint (11), the output end of the infrared emitting device (3) faces downward, a prism (5) is connected to the center of the end face of the scale disk (1) via a first connecting rope, the prism (5) is circular in shape, one end of a plurality of soft connecting belts (7) are evenly connected to the circumference of the prism (5), the other end of the soft connecting belt (7) is connected to an arc-shaped connecting tube (8), an arc-shaped connecting rod (9) is slidably connected between adjacent arc-shaped connecting tubes (8), and the arc-shaped connecting tube (8) and the arc-shaped connecting rod (9) are connected to form a ring; A level (2) is arranged at the bottom of the graduated disk (1), and the graduated disk (1) and the level (2) are perpendicular to the plane where the level (2) is located.

2. The steel pipe pile verticality measuring device according to claim 1, characterized in that: A vertical level (10) is arranged on the side of the graduated disk (1).

3. The steel pipe pile verticality measuring device according to claim 1, characterized in that: The first connecting rope is divided into at least three branches at one end close to the prism (5) and evenly connected to the arc-shaped connecting tube (8).

4. The steel pipe pile verticality measuring device according to claim 1, characterized in that: The center position of the end surface of the graduated disk (1) is connected to a plumb bob (4) via a second connecting rope.

5. The steel pipe pile verticality measuring device according to claim 1, characterized in that: The support frame comprises at least three support legs (6), wherein the support legs (6) are two mutually nested and slidably connected pipes, and the outer pipe is radially connected with bolts on the circumference close to the inner pipe.

6. A method for measuring the verticality of a steel pipe pile based on the device according to any one of claims 1 to 5, characterized in that: The steps include: Step 1: Place the support frame at the pile mouth of the pile to be tested, with the graduated disk (1) located directly above the pile mouth and the end face of the graduated disk (1) located on a vertical plane; Step 2: adjust the outer ring of the prism (5) to a diameter that is the same as the inner wall diameter of the pile to be measured, and place the prism (5) into the pile to be measured, with the prism (5) placed horizontally; Step three, the infrared emitting device (3) emits a laser to the prism (5), the laser is reflected by the prism (5) and emitted from the pile mouth, the laser to be reflected passes through the center position of the end face of the graduated disk (1), and the scale of the reflected laser is read, which is the verticality of the pile to be measured.

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