A static drilling root pile device maintaining verticality and a construction method thereof

Abstract

The present invention relates to a static drill rooted pile device for maintaining verticality, comprising a plurality of static drill rooted piles and a connection unit, wherein the connection unit comprises a plurality of longitudinally arranged connection rods and a plurality of intermediate connection components arranged in sequence at intervals between the connection rods, wherein the inner wall of the cylinder of the static drill rooted pile is provided with a plurality of slots matching the connection rods at its end along its length direction, and the connection rods of the connection unit are inserted into the slots in the cylinder of the static drill rooted pile to connect the adjacent upper and lower sections of the static drill rooted piles in a centering manner. Compared with the prior art, the static drill rooted piles of the present invention are connected by a connection unit, which can effectively realize the connection between adjacent static drill rooted piles, help to improve the centring of the two, improve the verticality, and set a vertical correction mechanism, which effectively solves the problem of verticality control when connecting multiple sections of static drill rooted piles.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation engineering, and in particular to a static drill root pile device capable of maintaining verticality and a construction method thereof. Background Art

[0002] Static drill rooted piles are made by using a special single-axis drilling rig to drill holes according to the set depth, and the pile end is expanded according to the set size (diameter and height). After the expansion is completed, cement slurry is injected at the pile end and around the pile. The drill is lifted while grouting. After the drilling is completed, the pile is implanted at the designed elevation by relying on its own weight. The cement slurry at the pile end and around the pile is solidified, so that the pile and the cement slurry solidified soil at the pile end and around the pile form a whole and jointly bear the load of the pile foundation construction process. During construction, static drill rooted piles are generally set in multiple sections according to the depth requirements. Adjacent static drill rooted piles need to be assembled and spliced ​​(such as welding). The control of verticality when implanting static drill rooted piles, especially when connecting multiple sections of static drill rooted piles, is related to the overall construction quality. It is a key project to be controlled during construction. This is also the focus and difficulty of construction and is often difficult to control. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of difficulty in controlling verticality during the construction of multi-section static drill root piles and to provide a static drill root pile device that maintains verticality and a construction method thereof.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A static drill rooted pile device for maintaining verticality comprises a plurality of static drill rooted piles and a connecting unit, wherein the connecting unit comprises a plurality of longitudinally arranged connecting rods and a plurality of intermediate connecting assemblies arranged in sequence and at intervals between the connecting rods. The inner wall of the cylinder of the static drill rooted pile is provided with a plurality of slots matching the connecting rods at its end along its length direction. The connecting rods of the connecting unit are inserted into the slots in the cylinder of the static drill rooted pile to align and connect the adjacent upper and lower sections of the static drill rooted piles.

[0006] Furthermore, the device also includes a vertical correction mechanism, including a positioning support frame, wherein the positioning support frame is arranged on the upper part of the foundation pit.

[0007] The upper part of the positioning support frame is provided with an upper clamping unit for adjusting the upper static drill root pile;

[0008] A lower clamping unit for adjusting the lower section of the statically drilled root pile is provided at the lower part of the positioning support frame.

[0009] Furthermore, the upper pressing unit and the lower pressing unit are both composed of a plurality of telescopic hydraulic cylinders, and the plurality of telescopic hydraulic cylinders are arranged around the axial direction of the static drill root pile at equal intervals.

[0010] Furthermore, the telescopic ends of the telescopic hydraulic cylinder are arranged in the horizontal direction and are perpendicular to the axial direction of the static drill rooted pile, and are pressed against the side wall of the static drill rooted pile.

[0011] Furthermore, the intermediate connection assembly comprises a metal ring and a centering connection piece fixed in the middle of the metal ring.

[0012] The centering connector includes a radial connection support and a center positioning ring. The radial connection support is connected between the inner wall of the metal ring and the outer wall of the center positioning ring to connect the two.

[0013] Furthermore, the radial connection supports are provided in 3 to 6 numbers and are arranged at equal intervals on the circumferential wall of the central positioning ring.

[0014] Furthermore, the connecting rod is welded to both sides of the metal ring along the direction of the center line of the metal ring.

[0015] Furthermore, the outer diameter of the metal ring matches the inner diameter of the static drill rooted pile, and is the same as or slightly smaller than the inner wall diameter of the static drill rooted pile; the size of the connecting rod is slightly smaller than the slot.

[0016] Furthermore, the length of the connection unit is 50-100 cm, and the length of the slot provided on the inner wall of the cylinder of the static drill root pile is half of the length of the connection unit.

[0017] The construction method of the static drilling root pile device for maintaining verticality comprises the following steps:

[0018] (1) The first section of the static drilled root pile is lifted by a lifting device and lowered into the foundation pit, with the upper end thereof extending out of the foundation pit and fixed on the vertical correction mechanism to be suspended in the air, and a part of the connection unit is inserted into the upper end of the first section of the static drilled root pile;

[0019] (2) Use a lifting device to lift and lower the second section of the static drill rooted pile, connect the lower end of the second section of the static drill rooted pile to the connecting unit, complete the assembly with the first section of the static drill rooted pile at the bottom, and correct the verticality through the vertical correction mechanism. After the correction, weld and assemble the first section of the static drill rooted pile and the second section of the static drill rooted pile, then lower the static drill rooted pile while ensuring the verticality, and finally keep the upper end of the static drill rooted pile and fix it on the vertical correction mechanism to be suspended in the air;

[0020] (3) Repeat steps (1) and (2) until the static drill root piles are implanted to the required depth, completing the construction process.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The static drill rooted piles are connected by a connection unit. The connection unit has multiple longitudinally arranged connection rods that cooperate with the matching grooves on the inner wall of the cylinder of the static drill rooted pile, so that the connection between adjacent static drill rooted piles can be effectively achieved;

[0023] 2. The middle connection component of the connection unit is a metal ring and a centering connector fixed in the middle of the metal ring. The connecting rod is welded to both sides of the ring along the center line of the metal ring. This method can effectively realize the effective connection inside the static drill root pile, which not only helps to enhance the firmness of the connection, but also helps to improve the centering of the two, avoid the problem of misalignment, and help to improve the verticality;

[0024] 3. A vertical correction mechanism is set up, and the positioning support frame is set up on the upper part of the foundation pit. The upper and lower parts of the positioning support frame are provided with upper and lower clamping units, which are helpful to effectively control the verticality of the static drill root pile construction from the outside, and effectively solve the problem of verticality control when connecting multiple sections of static drill root piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the static drill root pile of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the connection unit of the present invention;

[0027] Figure 3 It is a schematic diagram of the state of the static drilling root pile construction process of the present invention. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 , 2 A static drill rooted pile device for maintaining verticality comprises a plurality of static drill rooted piles 1 and a connection unit, wherein the connection unit comprises a plurality of longitudinally arranged connection rods 5 and a plurality of intermediate connection components arranged in sequence at intervals between the connection rods 5, wherein the inner wall of the cylinder of the static drill rooted pile 1 is provided with a plurality of slots 2 matching the connection rods 5 at its end along its length direction, and the connection rods 5 of the connection unit are inserted into the slots 2 in the cylinder of the static drill rooted pile 1 to align and connect the adjacent upper and lower static drill rooted piles 1. The static drill rooted piles are connected by the connection unit, and the connection between adjacent static drill rooted piles can be effectively achieved through the cooperation of the plurality of longitudinally arranged connection rods of the connection unit and the slots matching the inner wall of the cylinder of the static drill rooted pile.

[0030] like Figure 3The device also includes a vertical correction mechanism, including a positioning support frame 6, which is arranged at the upper part of the foundation pit, and the upper part of the positioning support frame 6 is provided with an upper clamping unit 7 for adjusting the upper section of the static drill rooted pile 1; the lower part of the positioning support frame 6 is provided with a lower clamping unit 8 for adjusting the lower section of the static drill rooted pile 1. The vertical correction mechanism is set up, the positioning support frame is arranged at the upper part of the foundation pit, and the upper and lower parts of the positioning support frame are provided with upper and lower clamping units, which helps to effectively control the verticality control of the static drill rooted pile construction from the outside, and effectively solves the problem of verticality control when connecting multiple sections of static drill rooted piles.

[0031] The upper clamping unit 7 and the lower clamping unit 8 are both composed of a plurality of telescopic hydraulic cylinders, which are arranged around the static drill rooted pile 1 at equal intervals along the axial direction. The telescopic ends of the telescopic hydraulic cylinders are arranged in a horizontal direction and are perpendicular to the axial direction of the static drill rooted pile, and are pressed against the side wall of the static drill rooted pile.

[0032] The intermediate connecting component includes a metal ring 3 and a centering connecting piece 4 fixed in the middle of the metal ring 3. The centering connecting piece 4 includes a radial connecting support and a center positioning ring. The radial connecting support is connected between the inner wall of the metal ring 3 and the outer wall of the center positioning ring to connect the two. There are three radial connecting supports, which are arranged at equal intervals on the circumferential wall of the center positioning ring. The connecting rod 5 is welded to both sides of the ring along the center line of the metal ring 3. The outer diameter of the metal ring 3 matches the inner diameter of the static drill root pile, which is the same as or slightly smaller than the inner wall diameter of the static drill root pile; the size of the connecting rod 5 is or slightly smaller than the slot 2. The length of the connecting unit is 80 cm, and the length of the slot 2 opened on the inner wall of the cylinder of the static drill root pile is half of the length of the connecting unit.

[0033] The middle connection component of the connection unit is a metal ring and a centering connector fixed in the middle of the metal ring. The connecting rod is welded to both sides of the ring along the center line of the metal ring. This method can effectively realize the effective connection inside the static drill root pile, which not only helps to enhance the firmness of the connection, but also helps to improve the centering of the two, avoid the problem of misalignment, and help to improve the verticality.

[0034] During construction, the following steps are included:

[0035] (1) The first section of the static drilled root pile is lifted by a lifting device and lowered into the foundation pit, with the upper end thereof extending out of the foundation pit and fixed on the vertical correction mechanism to be suspended in the air, and a part of the connection unit is inserted into the upper end of the first section of the static drilled root pile;

[0036] (2) Use a lifting device to lift and lower the second section of the static drill rooted pile, connect the lower end of the second section of the static drill rooted pile to the connecting unit, complete the assembly with the first section of the static drill rooted pile at the bottom, and correct the verticality through the vertical correction mechanism. After the correction, weld and assemble the first section of the static drill rooted pile and the second section of the static drill rooted pile, then lower the static drill rooted pile while ensuring the verticality, and finally keep the upper end of the static drill rooted pile and fix it on the vertical correction mechanism to be suspended in the air;

[0037] (3) Repeat steps (1) and (2) until the static drill root piles are implanted to the required depth, completing the construction process.

[0038] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A static drill root pile device for maintaining verticality, comprising a plurality of static drill root piles (1), characterized in that: It also comprises a connecting unit, the connecting unit comprising a plurality of longitudinally arranged connecting rods (5) and a plurality of intermediate connecting assemblies arranged in sequence at intervals between the connecting rods (5). The inner wall of the cylinder of the static drill rooted pile (1) is provided with a plurality of slots (2) matching the connecting rod (5) at its end along its length direction; the connecting rod (5) of the connecting unit is inserted into the slot (2) in the cylinder of the static drill rooted pile (1) to align and connect the adjacent upper and lower static drill rooted piles (1); The device also includes a vertical correction mechanism, including a positioning support frame (6), wherein the positioning support frame (6) is arranged at the upper part of the foundation pit. An upper clamping unit (7) for adjusting the upper static drill root pile (1) is provided on the upper part of the positioning support frame (6); The lower part of the positioning support frame (6) is provided with a lower clamping unit (8) for adjusting the lower section of the statically drilled root pile (1); The upper clamping unit (7) and the lower clamping unit (8) are both composed of a plurality of telescopic hydraulic cylinders, and the plurality of telescopic hydraulic cylinders are arranged at equal intervals around the axial direction of the static drill root pile (1); The intermediate connection assembly comprises a metal ring (3) and a centering connection piece (4) fixed in the middle of the metal ring (3). The centering connection piece (4) comprises a radial connection support and a center positioning ring, wherein the radial connection support is connected between the inner wall of the metal ring (3) and the outer wall of the center positioning ring to connect the two; The telescopic ends of the telescopic hydraulic cylinder are arranged in the horizontal direction and are perpendicular to the axial direction of the static drill rooted pile, and are pressed against the side wall of the static drill rooted pile; The outer diameter of the metal ring (3) matches the inner diameter of the static drill root pile and is the same as or slightly smaller than the inner wall diameter of the static drill root pile; the size of the connecting rod (5) is slightly smaller than the clamping groove (2); The length of the connection unit is 50-100 cm, and the length of the slot (2) provided on the inner wall of the cylinder of the static drill root pile is half of the length of the connection unit.

2. A static drilling root pile device for maintaining verticality according to claim 1, characterized in that: The radial connection supports are provided in 3 to 6 numbers and are arranged at equal intervals on the circumferential wall of the center positioning ring.

3. A static drilling root pile device for maintaining verticality according to claim 1, characterized in that: The connecting rod (5) is welded to both sides of the metal ring (3) along the direction of the center line of the ring.

4. A construction method using the static drilling root pile device for maintaining verticality as claimed in claim 1, characterized in that: The following steps are involved: (1) Use a lifting device to lift the first section of the static drilled root pile and lower it into the foundation pit, with its upper end extending out of the foundation pit and fixed on the vertical correction mechanism to be suspended in the air, and insert a part of the connection unit into the upper end of the first section of the static drilled root pile; (2) Use the lifting equipment to lift and lower the second section of the static drill rooted pile, connect the lower end of the second section of the static drill rooted pile to the connection unit, complete the assembly with the first section of the static drill rooted pile below, and correct the verticality through the vertical correction mechanism. After the correction, weld and assemble the first section of the static drill rooted pile and the second section of the static drill rooted pile, then lower the static drill rooted pile while ensuring the verticality, and finally keep the upper end of the static drill rooted pile and fix it on the vertical correction mechanism to be suspended in the air; (3) Repeat steps (1) and (2) until the static drill root piles are implanted to the required depth, completing the construction process.

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