CN218970022U - Deep foundation pit supporting structure of bored pile - Google Patents
Deep foundation pit supporting structure of bored pile Download PDFInfo
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- CN218970022U CN218970022U CN202222702452.7U CN202222702452U CN218970022U CN 218970022 U CN218970022 U CN 218970022U CN 202222702452 U CN202222702452 U CN 202222702452U CN 218970022 U CN218970022 U CN 218970022U
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- foundation pit
- deep foundation
- bored pile
- pile
- limiting rod
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Abstract
The application relates to the field of deep foundation pit support, in particular to a deep foundation pit support structure of a bored pile, which comprises a plurality of pile casings and a plurality of limiting rods; the pile casing is used for being inserted into the bottom wall of the deep foundation pit; the end part of the limiting rod is connected to the peripheral side of the protective cylinder; and the limiting rod is used for propping the bored pile against the inner wall of the deep foundation pit. According to the method, the bored pile in the deep foundation pit is propped against the inner side wall of the deep foundation pit by the limiting rod, so that the risk of fracture of the bored pile of the deep foundation pit due to uneven stress is reduced.
Description
Technical Field
The application relates to the field of deep foundation pit support, in particular to a deep foundation pit support structure of a bored pile.
Background
The bored pile is a pile which is made by forming pile holes in foundation soil by means of mechanical boring, steel pipe soil squeezing, manual excavation and the like on an engineering site, placing a reinforcement cage therein and pouring concrete.
In foundation pit engineering, the pile wall structure formed by a plurality of bored piles is generally arranged around the deep foundation pit, and the risk of collapse of the deep foundation pit is reduced by utilizing the pile wall structure. But the deepening of deep basal pit degree of depth, corresponding bored pile also corresponding increase, and the bored pile receives the extrusion force that comes from the peripheral soil layer of deep basal pit this moment and also can increase, easily leads to bored pile to break because of the uneven risk of atress.
Disclosure of Invention
In order to reduce the risk of fracture of a bored pile of a deep foundation pit due to uneven stress, the application provides a bored pile deep foundation pit supporting structure.
The application provides a drilling bored concrete pile deep basal pit supporting construction adopts following technical scheme:
a deep foundation pit supporting structure of a bored pile comprises a plurality of pile casings and a plurality of limiting rods; the pile casing is used for being inserted into the bottom wall of the deep foundation pit; the end part of the limiting rod is connected to the peripheral side of the protective cylinder; and the limiting rod is used for propping the bored pile against the inner wall of the deep foundation pit.
Through adopting above-mentioned technical scheme, with the pile casing grafting behind the diapire of deep basal pit, operating personnel is with the end connection of gag lever post in the week side of pile casing, utilizes the gag lever post to support the bored concrete pile and presses in the inner wall of deep basal pit. Through the tubular structure of a pile casing self, the pile casing can be firmly inserted in the bottom wall of the deep foundation pit, a firm foundation is provided for the limit rod, the bored pile in the deep foundation pit is propped against the inner side wall of the deep foundation pit by using the limit rod, the risk that the bored pile is damaged by the extrusion force of the soil layer around the deep foundation pit is reduced, and therefore the risk that the bored pile of the deep foundation pit is broken due to uneven stress is reduced through the support of the limit rod.
Optionally, a roller is arranged on the side wall of the limiting rod; the circumference side of gyro wheel is used for supplying the lateral wall butt of drilling bored concrete pile.
Through adopting above-mentioned technical scheme, at the deep basal pit excavation in-process, operating personnel is pegged graft the pile casing earlier in the diapire of deep basal pit, connect the gag lever post in the week side of pile casing again, along with the deepening of deep basal pit excavation degree of depth, operating personnel also is with the pile casing vibro hammer in the deep basal pit, the depth of pile casing grafting in the deep basal pit deepens, along with the depth of pile casing, the gag lever post is also followed the pile casing and is removed, reduce the cracked risk of deep basal pit excavation in-process drilling bored concrete pile, through the gyro wheel, reduce the in-process gag lever post scratch drilling bored concrete pile of pile casing deep in the deep basal pit.
Optionally, a connecting ring is coaxially arranged on the outer peripheral side of the protective cylinder; the surface of the connecting ring is provided with a plurality of connecting holes which are distributed at intervals along the circumferential direction of the connecting ring; the end part of the limiting rod is provided with a connecting bolt; the connecting hole is used for the connecting bolt to penetrate through; the connecting bolt is used for fastening the connecting ring and the limiting rod.
Through adopting above-mentioned technical scheme, connecting bolt and go-between's connection realizes the effect that gag lever post tip and a section of thick bamboo are connected to owing to the go-between is provided with a plurality of connecting holes, make the gag lever post be convenient for at the arbitrary position fixed of a section of thick bamboo week side of protecting, make this supporting construction adapt to the deep basal pit of different shapes, make supporting construction play the supporting role to the drilling bored concrete pile in the deep basal pit of different shapes, further reduce the drilling bored concrete pile of deep basal pit because of the uneven cracked risk of atress.
Optionally, a connecting sheet is hinged at the end part of the limiting rod; the connecting bolt is connected with the connecting sheet.
By adopting the technical scheme, the hinge plates are introduced, so that the limiting rod can rotate relative to the protective cylinder, the joint of the limiting rod and the protective cylinder is allowed to have angular deviation, and the problem that the joints of the two ends of the limiting rod and the protective cylinder are not in the same plane is solved.
Optionally, a plurality of butt joint holes are formed in the surface of the connecting sheet; the butt joint hole is used for the connecting bolt to pass through.
Through adopting above-mentioned technical scheme, adjacent gag lever post passes through connection piece and connecting bolt connection, shortens the length of gag lever post, and the operating personnel of being convenient for carries the gag lever post, reduces the use quantity of a section of thick bamboo simultaneously, improves this supporting construction's installation effectiveness.
Optionally, a guide surface is obliquely arranged on the surface of the connecting ring facing the end part of the casing; the guide surface is used for guiding sand to be separated from the connecting ring when the pile casing is inserted into the bottom wall of the deep foundation pit.
Through adopting above-mentioned technical scheme, when inserting the diapire of deep basal pit with the pile casing, through the guide of guide surface, improve the sandy soil of deep basal pit diapire and hinder the problem in the deep basal pit of pile casing, reduce the risk that go-between and pile casing break away from simultaneously.
Optionally, the guide surface is provided with a rib plate connected with the circumference side of the protective cylinder.
By adopting the technical scheme, the rib plate is introduced, so that the risk of separating the connecting ring from the pile casing is reduced, and the connection stability of the connecting ring and the pile casing is improved.
Optionally, the connecting ring can be dismantled and be connected with the shutoff piece, the shutoff piece is used for blockking up the connecting hole.
By adopting the technical scheme, the introduction of the plugging block reduces the risk that the sand and stone blocks the connecting hole when the pile casing is inserted into the bottom wall of the deep foundation pit, and reduces the step that follow-up operators still need to clean the sand and stone in the connecting hole.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the tubular structure of the pile casing, the pile casing can be firmly inserted into the bottom wall of the deep foundation pit, a firm foundation is provided for the limit rod, the bored pile in the deep foundation pit is propped against the inner side wall of the deep foundation pit by using the limit rod, the risk that the bored pile is damaged by the extrusion force of the soil layer around the deep foundation pit is reduced, and therefore the risk that the bored pile of the deep foundation pit is broken due to uneven stress is reduced through the support of the limit rod;
2. through the connecting ring, the limiting rod is convenient to fix at any position on the periphery of the pile casing, so that the supporting structure is suitable for deep foundation pits with different shapes, the supporting structure can support the bored pile in the deep foundation pit with different shapes, and the risk of fracture of the bored pile of the deep foundation pit due to uneven stress is further reduced;
3. through the connection piece, not only improve gag lever post both ends and protect the junction of a section of thick bamboo and be in the coplanar problem, shorten the length of gag lever post simultaneously, be convenient for operating personnel transport gag lever post to reduce the use quantity of protecting a section of thick bamboo, improve this supporting construction's installation effectiveness.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a schematic view for illustrating a state in which the casing is separated from the stopper rod according to the embodiment of the present application.
Fig. 3 is an enlarged view of a portion a of fig. 2.
Reference numerals illustrate: 1. a protective barrel; 2. a limit rod; 3. a connecting ring; 31. a connection hole; 32. a guide surface; 4. a block; 5. rib plates; 6. a roller; 7. a connecting sheet; 71. perforating; 72. a butt joint hole; 8. and (5) connecting bolts.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a bored pile deep basal pit supporting construction for reduce the cracked risk of bored pile because of the atress is uneven of deep basal pit.
Referring to fig. 1, a deep foundation pit supporting structure of a bored pile comprises a plurality of pile casings 1 and a plurality of limit rods 2, wherein the pile casings 1 are used for being inserted into the bottom wall of the deep foundation pit. The end connection of gag lever post 2 makes gag lever post 2 form multilayer support framework in deep basal pit in the week side of a section of thick bamboo 1, utilizes gag lever post 2 to support the bored concrete pile and presses in the inner wall of deep basal pit, reduces the risk of the fracture of bored concrete pile of deep basal pit because of the atress is uneven.
Referring to fig. 2, specifically, a connecting ring 3 is welded to the circumferential side of the casing 1, and the connecting ring 3 is disposed coaxially with the casing 1, and the number of the connecting rings 3 may be one, two, three or more. The lateral wall that the protective casing 1 was kept away from to go-between 3 has offered a plurality of connecting holes 31, and connecting hole 31 arrange along the circumference interval of go-between 3 and set up. The connecting ring 3 can be dismantled and be connected with shutoff piece 4, and shutoff piece 4 is used for blockking up connecting hole 31, and shutoff piece 4 can be the bolt with connecting hole 31 threaded connection, also can be the inserted bar of grafting in connecting hole 31, through the shutoff of shutoff piece 4, reduces the risk that the grit will connect hole 31 to block up.
Referring to fig. 2, the surface of the connection ring 3 is provided with a guide surface 32 in an inclined manner, and the guide surface 32 is located on the surface of the connection ring 3 facing the end of the casing 1. When the pile casing 1 is inserted into the bottom wall of the deep foundation pit, sand is guided by the guide surface 32 to be separated from the surface of the connecting ring 3, so that the risk of damage to the connecting position of the connecting ring 3 and the pile casing 1 is reduced. The guide surface 32 welded fastening has a plurality of floor 5, and a plurality of floor 5 arrange along the circumference interval of go-between 3 and set up, and the lateral wall welded fastening of floor 5 is in the lateral wall of a casing 1, improves the joint strength of go-between 3 and casing 1 through floor 5.
Referring to fig. 2, the stopper rod 2 is i-steel. The lateral wall bolted connection of gag lever post 2 has a plurality of gyro wheels 6, and the lateral wall butt of drilling bored concrete pile is supplied to the week side of gyro wheel 6. It should be noted that the size of the roller 6 may be determined according to the field construction environment, that is, the size of the roller 6 may be selected according to the gap between the stop lever 2 and the bored pile.
Referring to fig. 2 and 3, a connecting piece 7 is hinged to an end of the limit lever 2, a through hole 71 is formed in a surface of the connecting piece 7 in a penetrating manner, the connecting piece 7 is provided with a connecting bolt 8 rotatably penetrating the through hole 71, and the connecting bolt 8 is in threaded connection with the connecting hole 31. The connecting piece 7 and the connecting ring 3 are fastened through the connecting bolt 8, so that the limiting rod 2 and the protective barrel 1 are connected. The purpose of hinging the connecting sheet 7 to the limiting rod 2 is to enable the joint of the two ends of the limiting rod 2 and the protecting barrel 1 to allow angular deviation when the protecting barrel 1 at the two ends of the limiting rod 2 is inserted into the bottom wall of the deep foundation pit by hinging the connecting sheet 7 with the limiting rod 2, so that the risk that the end part of the limiting rod 2 is separated from the protecting barrel 1 is reduced.
Referring to fig. 3, the surface of the connecting piece 7 is perforated with a plurality of docking holes 72, and the docking holes 72 are provided for the connecting bolts 8 to pass through, and it should be noted that, in this embodiment, the length of the connecting bolts 8 passing through the docking holes 72 is longer than the length of the connecting bolts 8 passing through the through holes 71. The design of the butt joint hole 72 has the significance that the connection of two adjacent limiting rods 2 is realized through the connecting bolts 8 and the butt joint hole 72, the processing length of the limiting rods 2 is shortened, and the limiting rods 2 are convenient to carry.
The implementation principle of the deep foundation pit supporting structure of the bored pile of the embodiment of the application is as follows: after the pile casing 1 is inserted into the bottom wall of the deep foundation pit by an operator through the vibrating hammer, the connecting bolts 8 are used for fastening the connecting sheets 7 and the connecting rings 3, and the connecting sheets 7 of two adjacent limiting rods 2 are fastened, so that a plurality of layers of supporting structures consisting of the limiting rods 2 are formed on the periphery of the pile casing 1. Along with deepening of the deep foundation pit excavation depth, operators continue to vibrate the pile casing 1 in the deep foundation pit, and deepen the depth of the pile casing 1 inserted in the deep foundation pit. Along with the deep depth of the pile casing 1, the idler wheels 6 are propped against the side wall of the bored pile and rotate, the bored pile is propped against the inner wall of the deep foundation pit, so that the risk that the bored pile is damaged due to extrusion force of soil layers around the deep foundation pit is reduced, and the risk that the bored pile of the deep foundation pit is broken due to uneven stress is further reduced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A bored pile deep basal pit supporting construction, its characterized in that: comprises a plurality of protective barrels (1) and a plurality of limit rods (2); the pile casing (1) is used for being inserted into the bottom wall of the deep foundation pit; the end part of the limiting rod (2) is connected to the circumferential side of the protective cylinder (1); and the limiting rod (2) is used for propping the bored pile against the inner wall of the deep foundation pit.
2. The deep foundation pit supporting structure of a bored pile according to claim 1, wherein: the side wall of the limiting rod (2) is provided with a roller (6); the circumference of the roller (6) is used for abutting the side wall of the bored pile.
3. A bored pile deep foundation pit supporting structure according to claim 1 or 2, wherein: a connecting ring (3) is coaxially arranged on the outer peripheral side of the protective cylinder (1); a plurality of connecting holes (31) are formed in the surface of the connecting ring (3), and the connecting holes (31) are distributed at intervals along the circumferential direction of the connecting ring (3); the end part of the limiting rod (2) is provided with a connecting bolt (8); the connecting hole (31) is used for the connecting bolt (8) to penetrate through; the connecting bolt (8) is used for fastening the connecting ring (3) and the limiting rod (2).
4. A bored pile deep foundation pit supporting structure according to claim 3, wherein: a connecting sheet (7) is hinged at the end part of the limiting rod (2); the connecting bolt (8) is connected to the connecting sheet (7).
5. The deep foundation pit supporting structure of a bored pile according to claim 4, wherein: a plurality of butt joint holes (72) are formed in the surface of the connecting sheet (7); the butt joint hole (72) is used for the connecting bolt (8) to pass through.
6. A bored pile deep foundation pit supporting structure according to claim 3, wherein: the surface of the connecting ring (3) facing the end part of the casing (1) is obliquely provided with a guide surface (32); the guide surface (32) is used for guiding sand to be separated from the connecting ring (3) when the pile casing (1) is inserted into the bottom wall of the deep foundation pit.
7. The deep foundation pit supporting structure of a bored pile according to claim 6, wherein: the guide surface (32) is provided with a rib plate (5) connected with the circumference side of the protective cylinder (1).
8. A bored pile deep foundation pit supporting structure according to claim 3, wherein: the connecting ring (3) is detachably connected with a plugging block (4), and the plugging block (4) is used for plugging the connecting hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222702452.7U CN218970022U (en) | 2022-10-13 | 2022-10-13 | Deep foundation pit supporting structure of bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222702452.7U CN218970022U (en) | 2022-10-13 | 2022-10-13 | Deep foundation pit supporting structure of bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218970022U true CN218970022U (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222702452.7U Active CN218970022U (en) | 2022-10-13 | 2022-10-13 | Deep foundation pit supporting structure of bored pile |
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| Country | Link |
|---|---|
| CN (1) | CN218970022U (en) |
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2022
- 2022-10-13 CN CN202222702452.7U patent/CN218970022U/en active Active
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