CN112854281A - Positioning construction method for column bottom embedded steel pipe pile - Google Patents
Positioning construction method for column bottom embedded steel pipe pile Download PDFInfo
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- CN112854281A CN112854281A CN202110020686.0A CN202110020686A CN112854281A CN 112854281 A CN112854281 A CN 112854281A CN 202110020686 A CN202110020686 A CN 202110020686A CN 112854281 A CN112854281 A CN 112854281A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention provides a positioning construction method of a column bottom embedded steel pipe pile, which comprises the following steps: 1. constructing a foundation pile hole and pouring concrete to form a primary concrete layer; 2. installing a reinforcing mesh sheet layer and a foundation bolt positioner; the foundation bolt positioner comprises a positioning ring plate, a positioning column and a plurality of groups of bolt connecting pieces, so that the bottom surface of the foundation bolt is positioned 0.2-0.5 m above the primary concrete layer; 3. positioning and adjusting foundation bolts, and then pouring concrete in the pile holes of the foundation to form a secondary concrete layer; 4. excavating a bearing platform to form a bearing platform construction station; 5. dismantling the steel pipe pile foundation bolt positioner, and leaving the foundation bolt to be embedded in the secondary concrete layer; 6. installing a steel pipe column; 7. and (5) constructing a bearing platform. The invention can efficiently, integrally and accurately realize the pre-burying construction of the foundation bolt group on the concrete foundation and realize the rapid, efficient and accurate pre-burying construction of the foundation bolt group in the foundation pile hole.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a positioning construction method for an embedded steel pipe pile at a column bottom.
Background
The pre-buried construction of steel-pipe pile rag bolt has always been the key of steel-pipe pile accurate positioning. At present, the foundation bolts are usually directly embedded, and then the reinforcing steel bars are fixedly connected with the reinforcing steel bars of the concrete foundation, the connection mode is easy to be disturbed and deviated when concrete is poured, the installation quality of the steel pipe pile is seriously influenced, and particularly, one deviation of the foundation bolts of the round steel pipe pile can possibly cause that the whole steel pipe pile can not be installed in place. There is therefore a need for improvement.
Disclosure of Invention
The invention aims to provide a column bottom embedded type steel pipe pile positioning construction method which can efficiently, integrally and accurately realize embedding construction of foundation bolt groups on a concrete foundation and realize quick, efficient and accurate embedding construction of the foundation bolt groups in foundation pile holes.
The purpose of the invention can be realized by the following technical scheme:
a positioning construction method for an embedded steel pipe pile at the bottom of a column comprises the following steps:
step 1, constructing a foundation pile hole, then sequentially putting a reinforcement cage into the foundation pile hole and pouring concrete for the first time, wherein the first concrete is poured to be 3-5 m away from the top of the foundation pile hole to form a primary concrete layer;
the foundation bolt positioner comprises a positioning ring plate, a positioning column and a plurality of groups of bolt connecting pieces;
the positioning column is vertically arranged, an annular positioning frame is coaxially arranged near the middle of the positioning column, a plurality of lug plates are arranged on the outer wall near the middle of the positioning column, and the tail ends of the lug plates are fixedly connected with the inner side of the positioning frame;
the positioning ring plate is of a circular ring plate-shaped structure, a plurality of ring plate through holes are uniformly distributed on the positioning ring plate, and the positioning ring plate is coaxially connected to the bottom end of the positioning column so that the ring plate through holes on the positioning ring plate are uniformly distributed along the outer side of the bottom end of the positioning column;
each group of bolt connecting pieces comprise 1 foundation bolt, an upper nut and a lower nut which are in threaded connection with the foundation bolts, the foundation bolts in each group of bolt connecting pieces are correspondingly inserted into the ring plate through holes of the positioning ring plate one by one, and the upper nut and the lower nut are correspondingly positioned above and below the positioning ring plate respectively, so that a plurality of foundation bolts are uniformly distributed around the bottom end of the positioning column through the positioning ring plate to form a foundation bolt group;
in the steel pipe pile foundation bolt positioner, a positioning frame is lapped around the hole top of a foundation pile hole to ensure that the lower part of a positioning column, a positioning ring plate and a foundation bolt are sunk into the upper part of the foundation pile hole, the bottom end of the foundation bolt penetrates into a reinforcing mesh layer, and the bottom surface of the foundation bolt is positioned 0.2-0.5 m above a primary concrete layer;
4 jacks are arranged around the hole top of the foundation pile hole, the top heads of 2 jacks are over against the front side and the rear side of the positioning frame, and the top heads of the other 2 jacks are over against the left side and the right side of the positioning frame;
step 6, installing a steel pipe column, wherein the bottom end of the steel pipe column is provided with a plurality of annular bottom plates, the annular bottom plates are provided with a plurality of uniformly distributed bottom plate through holes and are sleeved on foundation bolts of the foundation bolt group in a one-to-one correspondence manner and are fastened and connected by locking nuts;
Preferably, in the invention, the positioning column is a hollow rectangular tubular structure, a rectangular ring frame coaxially arranged is arranged on the outer wall of the bottom end of the positioning column, and 4 corners of the rectangular ring frame are arranged over the positioning ring plate and are respectively provided with a corner through hole; 4 angle position through holes of the rectangular ring frame and 4 ring plate through holes on the positioning ring plate are arranged in a one-to-one correspondence mode and are fixedly connected through 4 groups of bolt connecting pieces, namely 4 corresponding foundation bolts in the 4 groups of bolt connecting pieces respectively penetrate through the 4 angle position through holes of the rectangular ring frame, corresponding upper nuts are screwed to be attached to the rectangular ring frame, and corresponding lower nuts are screwed to be attached to the positioning ring plate.
Preferably, in the present invention, the outer wall of the bottom of the steel pipe column is provided with a plurality of shear pins which are uniformly distributed.
Preferably, in the invention, the annular bottom plate of the steel pipe column is provided with a plurality of stiffening plates which are uniformly distributed.
Preferably, in the present invention, the inner wall of the bottom of the steel pipe column has a stiffener ring plate provided coaxially with the steel pipe column.
Preferably, in the present invention, the lock nut has a double nut structure.
The invention has the following prominent substantive features and remarkable progress:
1. the invention realizes the accurate positioning and pre-embedding of the foundation bolt group through the steel pipe pile foundation bolt positioner, particularly realizes the integral positioning of the foundation bolt group through the positioning ring plate, supports and positions the foundation bolt group at an elevation position through the positioning column, and realizes the fine adjustment of the horizontal position of the foundation bolt group through adjusting the horizontal position of the positioning column; the fine adjustment of the foundation bolt group is further realized through the jack, and the device has the characteristics of firm positioning and convenience in implementation.
2. The invention realizes the positioning construction of the embedded column base foundation bolt in the steel pipe pile, so that the foundation bolt is accurately, efficiently and stably embedded in the hole of the foundation pile, and the stability and the firmness of the steel pipe pile at the position of the connecting node at the bottom of the pile are obviously improved.
3. According to the foundation pile foundation structure and the construction method thereof, the reinforcing mesh sheet layer is laid in the foundation pile hole to reinforce and limit the translation of the foundation bolt group in the concrete pouring and condensing process, so that the accurate positioning of the foundation bolt group is effectively ensured, and the connection stability of the foundation bolt group and the foundation pile is ensured.
4. The positioning ring plate is further connected through the rectangular ring frame of the positioning column, so that the positioning ring plate has the characteristics of easiness in disassembly and convenience in construction and transportation, the rectangular ring frame is connected with the positioning ring plate through the foundation bolts to be embedded, the connecting parts are effectively utilized, and the design is very ingenious; and the stability of the steel pipe column is further effectively ensured through the shear-resistant studs, the stiffening plates, the stiffening ring plates and the like.
Drawings
Fig. 1 is a construction schematic diagram of step 1 in the column bottom embedded type steel pipe pile positioning construction method of the present invention.
Fig. 2 and 3 are construction schematic diagrams of step 2 in the column bottom embedded type steel pipe pile positioning construction method of the invention.
Fig. 4 is a construction schematic diagram of step 3 in the column bottom embedded type steel pipe pile positioning construction method of the invention.
Fig. 5 is a construction schematic diagram of step 4 in the column bottom embedded type steel pipe pile positioning construction method of the invention.
Fig. 6 is a construction schematic diagram of step 5 in the column bottom embedded type steel pipe pile positioning construction method of the present invention.
Fig. 7 and 8 are construction schematic diagrams of step 6 in the column bottom embedded type steel pipe pile positioning construction method of the invention.
Fig. 9 is a construction schematic diagram of step 7 in the column bottom embedded type steel pipe pile positioning construction method of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Examples
Referring to fig. 1 to 9, a positioning construction method for a column bottom embedded steel pipe pile includes the following steps:
step 1, referring to fig. 1 specifically, constructing a foundation pile hole 5, wherein the diameter of the foundation pile hole 5 is 3.3 meters, then sequentially placing a reinforcement cage 51 and first pouring concrete into the foundation pile hole 5, wherein the first pouring concrete is poured to a position 4.4 meters away from the top of the foundation pile hole 5 to form a primary concrete layer 91;
the foundation bolt positioner comprises a positioning ring plate 1, positioning columns 2 and a plurality of groups of bolt connecting pieces;
the positioning column 2 is of a vertically arranged rectangular hollow tubular structure, an annular positioning frame 21 is coaxially arranged near the middle of the positioning column 2, a plurality of lug plates 22 are arranged on the outer wall near the middle of the positioning column 2, and the tail ends of the lug plates 22 are fixedly connected with the inner side of the positioning frame 21;
the positioning ring plate 1 is of a circular ring plate-shaped structure, a plurality of ring plate through holes are uniformly distributed on the positioning ring plate 1, the positioning ring plate 1 is coaxially connected to the bottom end of the positioning column 2, and the ring plate through holes on the positioning ring plate 1 are uniformly distributed along the outer side of the bottom end of the positioning column 2;
each group of bolt connecting pieces comprises 1 foundation bolt 3, an upper nut 31 and a lower nut 32 which are in threaded connection with the foundation bolt 3, the length of the foundation bolt 3 is 1.5 m, the foundation bolts 3 in each group of bolt connecting pieces are correspondingly inserted into the ring plate through holes of the positioning ring plate 1 one by one, the upper nut 31 and the lower nut 32 are correspondingly positioned above and below the positioning ring plate 1 respectively, and a plurality of foundation bolts 3 are uniformly distributed around the bottom end of the positioning column 2 through the positioning ring plate 1 to form a foundation bolt group;
the outer wall of the bottom end of the positioning column 2 is also provided with a rectangular ring frame 23 which is coaxially arranged, and 4 corners of the rectangular ring frame 23 are arranged over the positioning ring plate 1 and are respectively provided with a corner through hole; the 4 corner perforations of the rectangular ring frame 23 and the 4 ring plate perforations on the positioning ring plate 1 are arranged in one-to-one correspondence and are fastened and connected through 4 groups of bolt connecting pieces, namely, 4 corresponding foundation bolts 3 in the 4 groups of bolt connecting pieces respectively penetrate through the 4 corner perforations of the rectangular ring frame 23, corresponding upper nuts 31 are screwed to be attached to the rectangular ring frame 23, and corresponding lower nuts 32 are screwed to be attached to the positioning ring plate 1.
In the steel pipe pile foundation bolt positioner, a positioning frame 21 is lapped around the hole top of a foundation pile hole 5, so that the lower part of a positioning column 2, a positioning ring plate 1 and a foundation bolt 3 are sunk into the upper part of the foundation pile hole 5, the foundation bolt 3 penetrates into a reinforcing mesh sheet layer 90 from the bottom end, and the bottom surface of the foundation bolt is located 0.3 m above a primary concrete layer 91;
4 jacks 4 are arranged around the hole top of the foundation pile hole 5, the top heads 41 of 2 jacks 4 are over against the front side and the rear side of the positioning frame 21, and the top heads 41 of 2 jacks 4 are over against the left side and the right side of the positioning frame 21;
step 6, referring to fig. 7 and 8 specifically, installing a steel pipe column 7, wherein the bottom end of the steel pipe column 7 is provided with a plurality of annular bottom plates 71, the annular bottom plates 71 are provided with a plurality of uniformly distributed bottom plate through holes and sleeved on the foundation bolts 3 of the foundation bolt group in a one-to-one correspondence manner, and the bottom plate through holes are fastened and connected through locking nuts 72, and the locking nuts 72 adopt a double-nut structure; the annular bottom plate 71 is provided with a plurality of stiffening plates 74 which are uniformly distributed, the outer wall of the bottom of the steel pipe column 7 is provided with a plurality of shear studs 73 which are uniformly distributed, and the inner wall of the bottom is provided with a stiffening ring plate 75 which is coaxial with the steel pipe column 7;
In the embodiment, the foundation pile hole 5 is a reinforced concrete column structure, and the concrete strength grades of the primary concrete layer 91 and the secondary concrete layer 92 in the pile hole are C50; the concrete strength grade of the tertiary concrete layer 93 of the bearing platform is C35; the steel pipe column 7 is a concrete filled steel pipe column structure, the size is phi 1600 multiplied by 40mm, and the strength grade of column body concrete is C80.
In step 3 of this embodiment, utilize the elevation position of rag bolt locator through locating frame 21 to realize the elevation location of rag bolt 3 in foundation pile hole 5 to and calibrate the horizontal position of reference column 2 through locater 6, promote locating frame 21 through jack 4 and finely tune the horizontal position of rag bolt 3, effectively ensured the whole accurate positioning of rag bolt 3, and reduced the disturbance of concrete placement in-process to rag bolt 3 position. Reuse cushion cap construction position 8 and realize quick, safe demolish rag bolt locator, firmly bury rag bolt 3 in foundation pile hole 5 in, the stability and the fastness of steel-pipe column 7 at the pile bottom connected node position afterwards of being convenient for effectively ensures the construction quality and the construction stability of steel-pipe pile.
Claims (6)
1. A positioning construction method for a column bottom embedded steel pipe pile is characterized by comprising the following steps: the method comprises the following steps:
step 1, constructing a foundation pile hole (5), then sequentially laying a reinforcement cage (51) and pouring concrete for the first time into the foundation pile hole (5), wherein the concrete for the first time is poured to be 3-5 meters away from the top of the foundation pile hole (5) to form a primary concrete layer (91);
step 2, firstly installing a plurality of bidirectional reinforcing mesh sheets above the primary concrete layer (91) in the foundation pile hole (5) to form a reinforcing mesh sheet layer (90), and then installing a foundation bolt positioner on the foundation pile hole (5);
the foundation bolt positioner comprises a positioning ring plate (1), positioning columns (2) and a plurality of groups of bolt connecting pieces;
the positioning column (2) is vertically arranged, an annular positioning frame (21) is coaxially arranged near the middle of the positioning column (2), a plurality of lug plates (22) are arranged on the outer wall near the middle of the positioning column (2), and the tail ends of the lug plates (22) are fixedly connected with the inner side of the positioning frame (21);
the positioning ring plate (1) is of a circular plate-shaped structure, a plurality of ring plate through holes are uniformly distributed on the positioning ring plate (1), the positioning ring plate (1) is coaxially connected to the bottom end of the positioning column (2), and the ring plate through holes on the positioning ring plate (1) are uniformly distributed along the outer side of the bottom end of the positioning column (2);
each group of bolt connecting pieces comprise 1 foundation bolt (3), an upper nut (31) and a lower nut (32) which are in threaded connection with the foundation bolt (3), the foundation bolts (3) in each group of bolt connecting pieces are correspondingly inserted into the ring plate through holes of the positioning ring plate (1) one by one, the upper nut (31) and the lower nut (32) are correspondingly positioned above and below the positioning ring plate (1) respectively, and a plurality of foundation bolts (3) are uniformly distributed around the bottom end of the positioning column (2) through the positioning ring plate (1) to form foundation bolt groups;
in the steel pipe pile foundation bolt positioner, a positioning frame (21) is lapped around the hole top of a foundation pile hole (5) to ensure that the lower part of a positioning column (2), a positioning ring plate (1) and a foundation bolt (3) are sunk into the upper part of the foundation pile hole (5), the foundation bolt (3) penetrates into a reinforcing mesh sheet layer (90) from the bottom end of the foundation bolt, and the bottom surface of the foundation bolt is positioned 0.2-0.5 m above a primary concrete layer (91);
4 jacks (4) are arranged around the hole top of the foundation pile hole (5), the top heads (41) of 2 jacks (4) are opposite to the front side and the rear side of the positioning frame (21), and the top heads (41) of the other 2 jacks (4) are opposite to the left side and the right side of the positioning frame (21);
step 3, detecting the horizontal position of the positioning column (2) through a positioning instrument (6), and pushing a positioning frame (21) to finely adjust the horizontal position of the foundation bolt (3) through a jack (4); after the foundation bolts (3) are positioned and adjusted, performing second concrete pouring in the foundation pile holes (5), pouring the second concrete to the elevation position of the bottom surface of the positioning annular plate (1) in the steel pipe pile foundation bolt positioner, and fully covering the reinforcing mesh sheet layer (90) to form a secondary concrete layer (92);
step 4, after the secondary concrete layer (92) is condensed to the preset strength, carrying out bearing platform excavation, specifically excavating a soil layer around the hole top of the foundation pile hole (5) to the position above the top of the foundation bolt (3) to form a bearing platform construction station (8);
step 5, dismantling the steel pipe pile foundation bolt positioner from a bearing platform construction position (8), and only leaving foundation bolts (3) to be pre-embedded in a secondary concrete layer (92), wherein the top surfaces of the foundation bolts (3) are 0.2 to 0.5 meters higher than the top surface of the secondary concrete layer (92); constructing a cushion layer (81) of the bearing platform in the bearing platform construction position (8);
step 6, installing a steel pipe column (7), wherein the bottom end of the steel pipe column (7) is provided with a plurality of annular bottom plates (71), the annular bottom plates (71) are provided with a plurality of uniformly distributed bottom plate through holes and are fixedly connected by locking nuts (72) in a one-to-one correspondence mode, and the bottom plate through holes are sleeved on foundation bolts (3) of foundation bolt groups;
step 7, arranging a bearing platform steel bar (82) around the bottom of the steel pipe column (7) in a bearing platform construction station (8), and arranging a bottom plate bottom bar (83) and a bottom plate gluten (84) on the bottom plate bottom bar (83) around the bearing platform steel bar (82); thirdly, pouring concrete in the bearing platform construction station (8) for the third time until the bearing platform steel bars (82), the bottom plate bottom bars (83) and the bottom plate gluten (84) are covered to form a third concrete layer (93); and forming a bearing platform after the third concrete layer (93) is condensed to the preset strength, and finishing construction.
2. The column bottom embedded type steel pipe pile positioning construction method according to claim 1, characterized in that: the positioning column (2) is of a hollow rectangular tubular structure, a rectangular ring frame (23) which is coaxially arranged is arranged on the outer wall of the bottom end of the positioning column, and 4 corners of the rectangular ring frame (23) are arranged over the positioning ring plate (1) and are respectively provided with corner through holes; 4 corner perforations of the rectangular ring frame (23) and 4 ring plate perforations on the positioning ring plate (1) are arranged in a one-to-one correspondence mode and are fixedly connected through 4 groups of bolt connecting pieces, namely 4 corresponding foundation bolts (3) in the 4 groups of bolt connecting pieces respectively penetrate through the 4 corner perforations of the rectangular ring frame (23), and corresponding upper nuts (31) and lower nuts (32) are screwed to be attached to the rectangular ring frame (23) and the positioning ring plate (1).
3. The column bottom embedded type steel pipe pile positioning construction method according to claim 1 or 2, characterized in that: the outer wall of the bottom of the steel pipe column (7) is provided with a plurality of shear resistant studs (73) which are uniformly distributed.
4. The column bottom embedded type steel pipe pile positioning construction method according to claim 1 or 2, characterized in that: the annular bottom plate (71) of the steel pipe column (7) is provided with a plurality of stiffening plates (74) which are uniformly distributed.
5. The column bottom embedded type steel pipe pile positioning construction method according to claim 1 or 2, characterized in that: and a stiffening ring plate (75) which is coaxial with the steel pipe column (7) is arranged on the inner wall of the bottom of the steel pipe column (7).
6. The column bottom embedded type steel pipe pile positioning construction method according to claim 1 or 2, characterized in that: the locking nut (72) adopts a double-nut structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020686.0A CN112854281A (en) | 2021-01-08 | 2021-01-08 | Positioning construction method for column bottom embedded steel pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020686.0A CN112854281A (en) | 2021-01-08 | 2021-01-08 | Positioning construction method for column bottom embedded steel pipe pile |
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| CN112854281A true CN112854281A (en) | 2021-05-28 |
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| CN202110020686.0A Pending CN112854281A (en) | 2021-01-08 | 2021-01-08 | Positioning construction method for column bottom embedded steel pipe pile |
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Citations (6)
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2021
- 2021-01-08 CN CN202110020686.0A patent/CN112854281A/en active Pending
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| KR100837230B1 (en) * | 2007-06-07 | 2008-06-12 | 윤여성 | A fixing apparatus for a shape steel beam |
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Application publication date: 20210528 |