Quick dismounting device for positioning ground cast-in-place pile and preventing slurry leakage

Abstract

A quick dismounting device for positioning a ground cast-in-place pile and preventing slurry leakage belongs to the field of building foundation construction and comprises two semicircular steel dies, an annular stiffening hoop and a vertical stiffening rib are welded on each semicircular steel die, bolt holes are uniformly formed in the vertical stiffening ribs on the left side and the right side of each semicircular steel die, and the bolt holes are connected with the semicircular steel dies. An annular leakage-proof plate is arranged at the bottom of each semicircular steel die, a stable triangular block is arranged on each annular leakage-proof plate, the two right-angle sides of each stable triangular block are welded to the outer wall of the corresponding semicircular steel die and the upper portion of the corresponding annular leakage-proof plate into a whole, and a pulling hole is formed in each stable triangular block. And the two semicircular steel dies are connected into a whole through the bolt holes and the self-locking locks. The device is suitable for construction of the cast-in-place pile above the ground, and can effectively prevent the cast-in-place pile from having the phenomena of voids, pitted surfaces, cavities and the like due to grout leakage caused by uneven ground, so that the quality of the cast-in-place pile is improved.

Description

Technical Field

[0001] The utility model relates to the field of building foundation construction, in particular to a quick-disassembly device for positioning ground cast-in-place piles and preventing slurry leakage. Background Art

[0002] At present, the design elevation of bored piles is basically below the ground. The construction of bored piles only requires positioning and laying out, burying casings, pouring concrete, and pulling out casings. With the expansion of the construction scope, some bored piles are above the ground, making it impossible to use traditional methods for integrated construction of bored piles above the ground. If the above-ground part is constructed using traditional formwork methods, it is easy to leak slurry due to uneven ground, resulting in honeycombed and hollow surfaces on the bored piles, thus affecting the quality of the bored piles. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a quick-disassembly device for positioning and preventing leakage of cast-in-place piles on the ground, which is suitable for the construction of cast-in-place piles above the ground and can effectively prevent the occurrence of honeycombed surfaces, voids and the like on the cast-in-place piles due to leakage of cast-in-place piles caused by uneven ground, thereby improving the quality of the cast-in-place piles. The device is easy to disassemble and can be repeatedly used, thus saving construction time.

[0004] The utility model adopts the following technical solution to solve the technical problem: a quick-disassembly device for positioning and preventing leakage of ground bored piles, comprising a semicircular steel mold, wherein the semicircular steel mold is divided into two pieces, each of which is welded with an annular stiffening hoop and a vertical stiffening rib, and the vertical stiffening ribs on the left and right sides of the semicircular steel mold are evenly provided with bolt holes, an annular leak-proof plate is provided at the bottom of each semicircular steel mold, a stabilizing triangular block is provided on the annular leak-proof plate, two right-angled sides of the stabilizing triangular block are respectively welded to the outer wall of the semicircular steel mold and the upper part of the annular leak-proof plate to form a whole, a lifting hole is provided on the stabilizing triangular block, and the two semicircular steel molds are connected to form a whole through bolt holes and self-tightening.

[0005] Furthermore, the annular stiffening hoop is evenly and fully welded to the outer wall of the semicircular steel mold using channel steel, the vertical stiffening rib is evenly and fully welded to the outer wall of the semicircular steel mold using channel steel, and the annular stiffening hoop and the vertical stiffening rib are perpendicular to each other.

[0006] Furthermore, a reinforcing triangular steel is provided between the vertical stiffening ribs on the left and right sides of the semicircular steel mold and the semicircular steel mold. The thickness of the reinforcing triangular steel is greater than the thickness of the semicircular steel mold. The reinforcing triangular steel and the bolt holes are staggered and evenly arranged along the vertical stiffening ribs.

[0007] Furthermore, the annular leak-proof plate is located 90-110 mm above the bottom end of the semicircular steel mold, and the annular leak-proof plate is integrally formed with the semicircular steel mold.

[0008] Furthermore, the length of the right-angled side of the bottom side of the stabilizing triangle block is consistent with the width of the annular anti-leakage plate.

[0009] Furthermore, the self-tightening lock includes a bolt and a right-angled trapezoidal steel block, one end of the bolt is provided with a nut and a square hole is opened in the middle, and the right-angled trapezoidal steel block passes through the square hole on the bolt to form self-locking.

[0010] Furthermore, the bottoms of the two semicircular steel molds are connected through bolt holes and fastening bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The device is provided with an annular leak-proof plate, which can contact and compact the ground over a large area, thereby preventing leakage of slurry due to uneven ground, resulting in honeycombed surfaces, voids and other phenomena in the bored piles, thereby improving the quality of the bored piles; further, the bottom of the device is extended by 90-110mm and can be pressed into the soil layer to maintain the stability of the device; further, the buried part adopts fastening bolts to connect two semicircular steel molds, which is convenient for construction operation; further, the upper part of the ground adopts a square hole opened by bolts, and a right-angled trapezoidal steel block is placed in the square hole, so that the two semicircular steel molds form a self-locking shape, and the side pressure of the concrete can become a self-locking aid, and it is easy to disassemble later, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of an embodiment of the utility model;

[0014] Figure 2 for Figure 1 a side view of the illustrated embodiment;

[0015] Figure 3 for Figure 1 A schematic structural diagram of a self-tightening bolt of the illustrated embodiment;

[0016] Figure 4 for Figure 1 A three-dimensional schematic diagram of the self-tightening lock of the illustrated embodiment;

[0017] Figure 5 for Figure 1 A three-dimensional schematic diagram of the illustrated embodiment;

[0018] Figure 6 for Figure 5 A three-dimensional schematic diagram of another angle of the embodiment shown;

[0019] Explanation of the accompanying drawings: 1. Semicircular steel mold, 2. Annular stiffening hoop, 3. Annular leak-proof plate, 4. Stable triangular block, 5. Pull-out hole, 6. Vertical stiffening rib, 7. Reinforcement triangular steel, 8. Self-tightening, 9. Fastening bolt, 8-1. Bolt, 8-2. Nut, 8-3. Square mouth, 8-4. Right-angle trapezoidal steel block. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0021] Reference Figures 1 to 6 A quick-disassembly device for positioning and preventing leakage of ground bored piles comprises a semicircular steel mold 1, wherein the semicircular steel mold 1 is composed of two pieces, each of which is welded with an annular stiffening hoop 2 and a vertical stiffening rib 6, and the vertical stiffening ribs 6 on the left and right sides of the semicircular steel mold 1 are evenly provided with bolt holes, and an annular leak-proof plate 3 is provided at the bottom of each semicircular steel mold 1, and a stabilizing triangular block 4 is provided on the annular leak-proof plate 3, and two right-angled sides of the stabilizing triangular block 4 are respectively welded to the outer wall of the semicircular steel mold 1 and the upper part of the annular leak-proof plate 3 to form a whole, and a lifting hole 5 is provided on the stabilizing triangular block 4, and the two semicircular steel molds 1 are connected to form a whole through bolt holes and a self-tightening lock 8.

[0022] In this embodiment, the semicircular steel mold 1 is made of 6mm cold-rolled steel plate (Q345B). After the semicircular steel mold 1 is made, the inner side of the steel mold and the joints of the steel plates are polished with a grinding wheel machine to make the surface of the steel plate smooth without protrusions or burrs.

[0023] In this embodiment, the annular stiffening hoop 2 is made of 10# channel steel and is evenly and fully welded to the outer wall of the semicircular steel mold 1. The vertical stiffening rib 6 is made of 8# channel steel and is evenly and fully welded to the outer wall of the semicircular steel mold 1. The annular stiffening hoop 2 and the vertical stiffening rib 6 are perpendicular to each other. The processing process must ensure that the curvature radius value of the semicircular steel mold 1 is accurate and must not cause plate surface welding deformation.

[0024] In this embodiment, the diameter of the bolt hole is 16 mm.

[0025] In this embodiment, a reinforcing triangular steel 7 is provided between the vertical stiffening ribs 6 located on the left and right sides of the semicircular steel mold 1 and the semicircular steel mold 1. The thickness of the reinforcing triangular steel 7 is greater than the thickness of the semicircular steel mold 1. The reinforcing triangular steel 7 and the bolt holes are staggered and evenly arranged along the vertical stiffening ribs 6.

[0026] In this embodiment, the annular leak-proof plate 3 is located 100 mm above the bottom end of the semicircular steel mold 1 , and the annular leak-proof plate 3 is integrally formed with the semicircular steel mold 1 .

[0027] In this embodiment, the length of the bottom right-angle side of the stabilizing triangular block 4 is consistent with the width of the annular anti-leakage plate 3 .

[0028] In this embodiment, the self-tightening lock 8 includes a bolt 8-1 and a right-angled trapezoidal steel block 8-4. One end of the bolt 8-1 has a nut 8-2 and a square hole 8-3 is opened in the middle. The right-angled trapezoidal steel block 8-4 passes through the square hole 8-3 on the bolt 8-1 to form self-locking.

[0029] In this embodiment, the bottoms of the two semicircular steel molds 1 are connected through bolt holes and fastening bolts 9 to facilitate the semicircular steel molds 1 to penetrate deep into the ground. The fastening bolts 9 are composed of conventional bolts and nuts.

[0030] Construction process:

[0031] After the underground part of the bored pile is poured with concrete and the casing is pulled out, the device is placed at the pile mouth of the bored pile, and the bottom is pressed into the soil layer so that the annular leak-proof plate contacts the ground with a large area and is compacted, and then the concrete is poured. After the concrete solidifies, the self-tightening lock is removed, and the entire device is pulled out through the lifting device and the lifting and pulling holes 5 on the stable triangle block 4.

[0032] The above description is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A quick-disassembly device for positioning and preventing leakage of ground bored piles, characterized in that: It includes a semicircular steel mold, which is divided into two pieces. Each semicircular steel mold is welded with an annular stiffening hoop and a vertical stiffening rib, and the vertical stiffening ribs on the left and right sides of the semicircular steel mold are evenly provided with bolt holes. The bottom of each semicircular steel mold is provided with an annular leak-proof plate, and a stabilizing triangular block is provided on the annular leak-proof plate. The two right-angled sides of the stabilizing triangular block are respectively welded to the outer wall of the semicircular steel mold and the upper part of the annular leak-proof plate to form a whole. The stabilizing triangular block is provided with a pulling hole, and the two semicircular steel molds are connected to form a whole through bolt holes and self-tightening.

2. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1, characterized in that: The annular stiffening hoop is made of channel steel and is evenly and fully welded to the outer wall of the semicircular steel mold. The vertical stiffening rib is made of channel steel and is evenly and fully welded to the outer wall of the semicircular steel mold. The annular stiffening hoop and the vertical stiffening rib are perpendicular to each other.

3. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1 or 2, characterized in that: A reinforcing triangular steel is arranged between the vertical reinforcing ribs on the left and right sides of the semicircular steel mold and the semicircular steel mold. The thickness of the reinforcing triangular steel is greater than the thickness of the semicircular steel mold. The reinforcing triangular steel and the bolt holes are staggered and evenly arranged along the vertical reinforcing ribs.

4. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1 or 2, characterized in that: The annular leak-proof plate is located 90-110 mm above the bottom end of the semicircular steel mold, and the annular leak-proof plate is integrally formed with the semicircular steel mold.

5. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1 or 2, characterized in that: The length of the right-angled side of the bottom side of the stabilizing triangular block is consistent with the width of the annular anti-leakage plate.

6. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1 or 2, characterized in that: The self-tightening lock comprises a bolt and a right-angled trapezoidal steel block, one end of the bolt is provided with a nut and a square hole is opened in the middle, and the right-angled trapezoidal steel block passes through the square hole on the bolt to form a self-locking.

7. The quick-disassembly device for positioning and preventing leakage of ground bored piles according to claim 1 or 2, characterized in that: The bottoms of the two semicircular steel molds are connected through bolt holes and fastening bolts.

Images