CN111691403A - Prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and manufacturing method thereof - Google Patents
Prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and manufacturing method thereof Download PDFInfo
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- CN111691403A CN111691403A CN201910195108.3A CN201910195108A CN111691403A CN 111691403 A CN111691403 A CN 111691403A CN 201910195108 A CN201910195108 A CN 201910195108A CN 111691403 A CN111691403 A CN 111691403A
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- tubular pile
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- 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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/68—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts and applying centrifugal forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/76—Moulds
- B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Abstract
The prefabricated concrete-filled steel tube tubular pile capable of being connected mutually and the manufacturing method thereof comprise the following steps: the two sides of the semicircular steel column shell are bent inwards by 90 degrees to form an L-shaped connecting part; the two connecting fasteners have C-shaped sections and comprise bottom parts and two buckling parts; the two buckling parts are respectively inserted into the inner sides of the L-shaped connecting parts of the two semicircular steel column shells, and a T-shaped slot is formed in a gap between the inner cavity of the connecting fastener and the L-shaped connecting parts; the concrete pipe is arranged in a cavity enclosed by the two semicircular steel column shells and the two connecting fasteners; at least one connecting piece, H-shaped, one side section of which is matched with the T-shaped slot; two sides of the connecting piece are respectively inserted into the T-shaped slots at the opposite sides of the two prefabricated concrete-filled steel tube tubular piles, and the two prefabricated concrete-filled steel tube tubular piles are connected with each other; two end plates are respectively arranged at two ends of the prefabricated concrete-filled steel tube tubular pile, and two sides of each end plate are symmetrically provided with a T-shaped slotted hole matched with a flange plate on one side of the connecting piece, so that the flange plate on one side of the connecting piece can pass through the slotted holes.
Description
Technical Field
The invention relates to a pile foundation technology, in particular to a prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and a manufacturing method thereof, which are used for a tubular pile enclosure wall with a connecting fastener used as a foundation pit enclosure structure in foundation pit engineering or a cofferdam in water conservancy engineering.
Background
The steel pipes are all complete welded seam steel pipes or seamless steel pipes, and no longitudinal welded seam steel pipe is found in the combination of two steel plates.
Disclosure of Invention
The invention aims to provide a prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and a manufacturing method thereof, which are convenient to process, store, transport and install.
In order to achieve the purpose, the technical scheme of the invention is as follows:
but interconnect's prefabricated steel core concrete pipe pile, it includes: the two sides of the semicircular steel column shell are bent inwards by 90 degrees to form an L-shaped connecting part; the two connecting fasteners are C-shaped in section and comprise bottom parts and two buckling parts which are formed by bending and extending inwards by 90 degrees from two sides of the bottom parts and then bending and extending inwards by 90 degrees; the length of the connecting fastener is the same as that of the semicircular steel column shell; two buckling parts of the two connecting fasteners are respectively inserted into the inner sides of the L-shaped connecting parts formed on the two side edges of the two semicircular steel column shells, and a T-shaped slot is formed by a gap between the inner cavity of each connecting fastener and the L-shaped connecting parts on the end edges of the two semicircular steel column shells; the two semicircular steel column shells are connected with the two connecting fasteners to form a cavity; the concrete pipe is arranged in a cavity defined by the two semicircular steel column shells and the two connecting fasteners to form a prefabricated concrete-filled steel pipe pile; the connecting piece is H-shaped, and the shape of the cross section of one side of the connecting piece is matched with that of the T-shaped slot; two sides of the connecting piece are respectively inserted into the T-shaped slots at the opposite sides of the two prefabricated concrete-filled steel tube tubular piles, and the two prefabricated concrete-filled steel tube tubular piles are connected with each other; the width of the flange plates on the two sides of the connecting piece is smaller than 1/4 of the outer diameter of the prefabricated concrete filled steel tube tubular pile and larger than 1/20 of the outer diameter of the prefabricated concrete filled steel tube tubular pile, the height of a web plate of the connecting piece is larger than the width of the flange plates on the two sides, and the wall thickness of the two flange plates and the wall thickness of the web plate are 3-30 mm; the two end plates are respectively arranged at two ends of the prefabricated concrete-filled steel tube tubular pile, and are ring bodies, and the outer diameter and the inner diameter of each end plate are the same as those of the prefabricated concrete-filled steel tube tubular pile; and the two sides of the end plate are symmetrically provided with T-shaped slotted holes matched with the flange plate at one side of the connecting piece, so that the flange plate at one side of the connecting piece can pass through the slotted holes.
Preferably, at least two anchoring steel bars which are connected with the concrete pipe in an anchoring mode are vertically arranged on one side, without the gap, of the connecting fastener at intervals along the axial direction.
Preferably, the anchoring reinforcing steel bars are positioned on two sides of the connecting fastener or vertically arranged on the outer side surface of one side of the connecting fastener without a notch.
Preferably, the inner side surface of the end plate is vertically provided with a plurality of steel bars connected with the concrete pipe in an anchoring manner, and the length of each steel bar is larger than the diameter of the precast steel pipe concrete pipe pile.
Preferably, the wall thickness of the semicircular steel column shell is 3 mm-30 mm;
preferably, the outer diameter of the precast concrete filled steel tube tubular pile is 0.5 m-5 m, the inner diameter is larger than half of the outer diameter, and the length of the precast concrete filled steel tube tubular pile is 2 m-80 m.
Preferably, the wall thickness of the connecting fastener is more than or equal to 3 mm.
Preferably, the thickness of the end plate is 10-50 mm.
The invention relates to a method for manufacturing prefabricated concrete-filled steel tube tubular piles capable of being connected with each other, which comprises the following steps:
1) manufacturing a plurality of pin keys which can be used in a circulating way, wherein the cross section size of each pin key is obtained by subtracting the installation clearance from the cross section size of the T-shaped slotted hole of the end plate, and the length of each pin key is larger than the radius of the concrete pipe;
manufacturing a recyclable cylindrical concrete tubular pile mold (M), wherein the concrete tubular pile mold (M) is 2 semi-cylindrical molds (M1, M2), the outer walls of the semi-cylindrical molds (M1, M2) are provided with at least 2 semi-running wheels, the spacing distance of the 2 semi-running wheels is larger than the inner diameter of the semi-cylindrical mold, the semi-cylindrical molds can be buckled and fixed through bolts to form the cylindrical concrete tubular pile mold (M) with the outer wall provided with at least 2 complete running wheels, the inner diameter of the concrete tubular pile mold (M) is equal to the outer diameter of a prefabricated steel tubular concrete tubular pile to be manufactured, and the length of the concrete tubular pile mold (M) is not less than the length of the prefabricated steel tubular concrete tubular pile to be manufactured;
2) inserting two buckling parts of a connecting fastener into the inner sides of L-shaped connecting parts formed on two side edges of the two semicircular steel column shells respectively to connect the two semicircular steel column shells to form a circular steel pipe; a T-shaped slot is formed in a gap between an inner cavity of the connecting fastener and the L-shaped connecting parts on the side edges of the two semicircular steel column shells; the two semicircular steel column shells are connected with the two connecting fasteners to form a cavity;
3) respectively penetrating the four pin keys through the T-shaped slotted holes of the two end plates and the T-shaped slots of the two connecting fasteners; connecting the two end plates with the two semicircular steel column shells and the two connecting fasteners to form a circular steel pipe for temporary fixation;
4) welding the two end plates with the two semi-circular steel cylinder shells and reserving two T-shaped slots;
5) placing a semi-cylindrical mold (M1) with the axis horizontal on the station, the opening upward and keeping an inclination angle not more than 30 degrees; horizontally placing the two welded end plates, the two connecting fasteners, the two semicircular steel column shells and the four temporarily fixed pin keys in a semicircular cylinder mould (M1); then the semi-cylindrical mould (M2) is opened and downwards buckled on the semi-cylindrical mould (M1), and then the semi-cylindrical moulds (M1 and M2) are connected through bolts to form a complete cylindrical concrete pipe pile mould (M) with the outer wall provided with at least 2 complete running wheels;
6) pouring concrete mixture into the circular steel pipe formed by connecting the two semicircular steel column shells and the two connecting fasteners by adopting a pumping method;
7) horizontally placing the concrete pipe pile mould (M) on a centrifuge, and utilizing a driving wheel of the centrifuge to drive a running wheel of the concrete pipe pile mould (M) to centrifugally form a concrete mixture; two connecting fasteners in the concrete pipe pile mould (M) are symmetrically arranged, so that the steel pipe concrete pipe pile can automatically meet the dynamic balance condition in the high-speed centrifugal forming process, and the temporarily fixed pin key can block the gap of an unwelded gap to control the outflow of slurry during centrifugation;
8) and curing the formed concrete-filled steel tube tubular pile, removing the concrete tubular pile mold (M) and removing the pin key to finish manufacturing the section of the prefabricated concrete-filled steel tube tubular pile.
The invention has the beneficial effects that:
1. the prefabricated concrete-filled steel tube tubular piles which can be mutually connected can be used as a steel tube pile enclosure wall with a connecting fastener of a foundation pit enclosure structure or a cofferdam in water conservancy engineering, and can not only retain soil, but also effectively retain water.
2. The connecting piece (H-shaped steel) in occlusion connection is not easy to deform in the direction perpendicular to the flange plate, and is particularly suitable for the working condition that the distance between the adjacent precast concrete tubular piles needs to be fixed.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of an end plate in an embodiment of the present invention.
Fig. 3 is a schematic structural view of the connecting fastener and the semicircular steel column shell according to the embodiment of the present invention.
Fig. 4 is a schematic view of the assembly of the connecting fastener and the semicircular steel cylinder shell according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a connector according to an embodiment of the present invention.
Fig. 6 is an assembly view of the semicircular steel cylinder shell, the connecting fastener and the connecting piece according to the embodiment of the invention.
Fig. 7 is a schematic structural diagram of a pin key in an embodiment of the invention.
Fig. 8 is a schematic structural view illustrating the fabrication of a semicircular steel column housing and a connecting fastener according to an embodiment of the present invention.
Fig. 9 is an assembly view of the semicircular steel cylinder shell and the connecting fastener in the embodiment of the invention.
Fig. 10 is a schematic structural view of the prefabricated concrete filled steel tube pile of the present invention.
Fig. 11 is a schematic structural view of the prefabricated concrete filled steel tube pile of the present invention.
Detailed Description
The invention is further illustrated by the following examples and figures.
Referring to fig. 1 to 9, the prefabricated concrete filled steel tubular pile capable of being connected to each other according to the present invention includes:
two semicircular steel column shells 1 and 1 ', wherein two side edges of the semicircular steel column shells 1 and 1' are bent inwards by 90 degrees to form L-shaped connecting parts 101, 102, 101 'and 102';
the cross section of the connecting fastener 2, 2 'is C-shaped, and the connecting fastener 2 (the connecting fastener 2 is taken as an example, the same below) comprises a bottom 21 and two buckling parts 22, 22' formed by bending and extending inwards 90 degrees from two sides of the bottom 21 and then bending and extending inwards 90 degrees; the length of the connecting fastener 2 is the same as that of the semicircular steel column shell 1; two buckling parts 22 and 22 ' of two connecting fasteners 2 and 2 ' are respectively inserted into the inner sides of L-shaped connecting parts 101, 102, 101 ' and 102 ' formed on two side edges of the two semicircular steel column shells 1 and 1 ', a T-shaped slot 100 is formed by a gap between an inner cavity of the connecting fastener 2 and the L-shaped connecting parts 101 and 101 ' on the end edges of the two semicircular steel column shells 1 and 1 ', and a T-shaped slot 100 ' is formed by a gap between the inner cavity of the connecting fastener 2 ' and the L-shaped connecting parts 102 and 102 ' on the end edges of the two semicircular steel column shells 1 and 1 '; the two semicircular steel column shells are connected with the connecting fastener to form a cavity;
the concrete pipe 3 is arranged in a cavity defined by the two semicircular steel column shells 1 and 1 'and the two connecting fasteners 2 and 2' to form a prefabricated concrete-filled steel pipe pile;
a connecting piece 4 which is H-shaped, and the shape of one side section of the connecting piece is matched with the T-shaped slot 100; two sides of the connecting piece 4 are respectively inserted into the T-shaped slots 100 on the opposite sides of the two prefabricated concrete-filled steel tube tubular piles, and the two prefabricated concrete-filled steel tube tubular piles are connected with each other; the width of the two side flange plates 41 and 42 of the connecting piece 4 is less than 1/4 of the outer diameter of the concrete pipe 3 and more than 1/20 of the outer diameter of the concrete pipe 3, the height of the web plate 43 is more than the width of the two side flange plates 41 and 42, and the wall thickness of the two flange plates 41 and 42 and the web plate 43 is 3 mm-30 mm;
two end plates 5 (taking the end plates 5 as an example, the same applies below) are respectively arranged at two ends of the prefabricated concrete-filled steel tube tubular pile, and the end plates 5 are ring bodies, and the outer diameter and the inner diameter of each end plate are the same as those of the prefabricated concrete-filled steel tube tubular pile; and, two sides of the end plate 5 are symmetrically arranged on the T-shaped slotted holes 51 and 52 matched with the flange plates 41 and 42 at two sides of the connecting piece 4, so that the flange plate at one side of the connecting piece 4 can pass through.
Preferably, at least two anchoring steel bars 6 which are connected with the concrete pipe column 3 in an anchoring mode are vertically arranged on one side, without the gap, of the connecting fastener 2 at intervals along the axial direction.
Preferably, the anchoring reinforcing bars 6 are located at two sides of the connecting fastener 2 or vertically arranged on the outer side surface of the non-gap side of the connecting fastener 2.
Preferably, a plurality of steel bars which are connected with the concrete pipe 3 in an anchoring mode are vertically arranged on the inner side face of the end plate 5, and the length of each steel bar is larger than the diameter of the concrete pipe 3.
Preferably, the wall thickness of the semicircular steel column shell 1 is 3 mm-30 mm;
preferably, the outer diameter of the precast concrete filled steel tube tubular pile is 0.5 m-5 m, the inner diameter is larger than half of the outer diameter, and the length of the precast concrete filled steel tube tubular pile is 2 m-80 m.
Preferably, the wall thickness of the connecting fastener 2 is more than or equal to 3 mm; the thickness of the end plate 5 is 10-50 mm.
Referring to fig. 10 and 11, the method for manufacturing the prefabricated concrete filled steel tube tubular pile capable of being connected with each other according to the present invention includes the following steps:
1) manufacturing a plurality of pin keys 7 which can be used in a circulating way, wherein the cross section size of each pin key 7 is obtained by subtracting the installation clearance from the cross section size of a T-shaped slotted hole of an end plate, and the length of each pin key is larger than the radius of the concrete pipe pile;
manufacturing a recyclable cylindrical concrete tubular pile mold M, wherein the concrete tubular pile mold M comprises 2 semi-cylindrical molds M1 and M2, the outer walls of the semi-cylindrical molds M1 and M2 are provided with at least 2 semi-running wheels, the spacing distance of the 2 semi-running wheels is larger than the inner diameter of the semi-cylindrical mold M, the semi-cylindrical molds M can be fastened and fixed through bolts to form the cylindrical concrete tubular pile mold M with the outer wall provided with at least 2 complete running wheels, the inner diameter of the concrete tubular pile mold M is equal to the outer diameter of the prefabricated steel tubular pile to be manufactured, and the length of the concrete tubular pile mold M is not smaller than the length of the prefabricated steel tubular pile to be manufactured;
2) two buckling parts of two connecting fastener buckles 2 and 2 ' are respectively inserted into the inner sides of L-shaped connecting parts formed on two side edges of the two semicircular steel column shells 1 and 1 ', so that the two semicircular steel column shells 1 and 1 ' are connected to form a circular steel pipe; a T-shaped slot 100 is formed by a gap between the inner cavity of the connecting fastener 2 and the L-shaped connecting parts at the end edges of the two semicircular steel column shells 1 and 1'; the two semicircular steel column shells 1 and 1 'and the two connecting fasteners 2 and 2' are connected to form a cavity;
3) the four pins 7 respectively penetrate through the two end plates 5, take the end plates 5 as an example, and are provided with the same T-shaped slotted holes 51 and 52 and two T-shaped slots 100 connected with fasteners; connecting the two end plates with the two semicircular steel column shells and the two connecting fasteners to form a circular steel pipe for temporary fixation;
4) welding the two end plates with the two semi-circular steel cylinder shells and reserving two T-shaped slots;
5) placing a semi-cylindrical mold M1 on a station with an axis horizontal, wherein an opening is upward and an inclination angle not greater than 30 degrees is kept; horizontally placing the two welded end plates, the two connecting fasteners, the two semicircular steel column shells and the four temporarily fixed pin keys in a semicircular cylinder mold M1; then, the semi-cylindrical mold M2 is buckled on the semi-cylindrical mold M1 in an opening downward mode, and then the semi-cylindrical molds M1 and M2 are connected through bolts to form a complete cylindrical concrete pipe pile mold M with the outer wall provided with at least 2 complete running wheels;
6) pouring concrete mixture into the circular steel pipe formed by connecting the two semicircular steel column shells and the two connecting fasteners by adopting a pumping method;
7) horizontally placing the concrete pipe pile mould M on a centrifuge, and utilizing a driving wheel of the centrifuge to drive a running wheel of the concrete pipe pile mould M to centrifugally form a concrete mixture; the two connecting fasteners 2 and 2' in the concrete pipe pile mould M are symmetrically arranged, so that the steel pipe concrete pipe pile can automatically meet the dynamic balance condition in the high-speed centrifugal forming process, and the temporarily fixed pin key 7 can block the gap of an unwelded gap to control the outflow of slurry during centrifugation;
8) and curing the formed concrete-filled steel tube tubular pile, removing the concrete tubular pile mold M and removing the pin key 7 to finish manufacturing the section of the prefabricated concrete-filled steel tube tubular pile.
The invention provides the prefabricated concrete-filled steel tube tubular piles which can be connected with each other for pile foundation engineering, foundation pit engineering, hydraulic engineering, military engineering, traffic engineering and disaster prevention and reduction engineering, and the prefabricated concrete-filled steel tube tubular piles which can be connected with each other are convenient to process, store, transport and install.
Claims (9)
1. But interconnect's prefabricated steel core concrete pipe pile, its characterized in that includes:
the two sides of the semicircular steel column shell are bent inwards by 90 degrees to form an L-shaped connecting part;
the two connecting fasteners are C-shaped in section and comprise bottom parts and two buckling parts which are formed by bending and extending inwards by 90 degrees from two sides of the bottom parts and then bending and extending inwards by 90 degrees; the length of the connecting fastener is the same as that of the semicircular steel column shell; two buckling parts of the two connecting fasteners are respectively inserted into the inner sides of L-shaped connecting parts formed at two end edges of the two semicircular steel column shells, and a T-shaped slot is formed by a gap between an inner cavity of each connecting fastener and the L-shaped connecting parts at the side edges of the two semicircular steel column shells; the two semicircular steel column shells are connected with the two connecting fasteners to form a cavity;
the concrete pipe is arranged in a cavity defined by the two semicircular steel column shells and the two connecting fasteners to form a prefabricated concrete-filled steel pipe pile;
the connecting piece is H-shaped, and the shape of the cross section of one side of the connecting piece is matched with that of the T-shaped slot; two sides of the connecting piece are respectively inserted into the T-shaped slots at the opposite sides of the two prefabricated concrete-filled steel tube tubular piles, and the two prefabricated concrete-filled steel tube tubular piles are connected with each other; the width of the flange plates on the two sides of the connecting piece is smaller than 1/4 of the outer diameter of the prefabricated concrete filled steel tube tubular pile and larger than 1/20 of the outer diameter of the prefabricated concrete filled steel tube tubular pile, the height of a web plate of the connecting piece is larger than the width of the flange plates on the two sides, and the wall thickness of the two flange plates and the wall thickness of the web plate are 3-30 mm;
the two end plates are respectively arranged at two ends of the prefabricated concrete-filled steel tube tubular pile, and are ring bodies, and the outer diameter and the inner diameter of each end plate are the same as those of the prefabricated concrete-filled steel tube tubular pile; and the two sides of the end plate are symmetrically provided with T-shaped slotted holes matched with the flange plate at one side of the connecting piece, so that the flange plate at one side of the connecting piece can pass through the slotted holes.
2. The interconnectable precast concrete filled steel tubular pile according to claim 1, wherein said connection fastener unnotched side is provided with at least two anchoring bars vertically spaced apart from each other in an axial direction for anchoring connection with the concrete pipe.
3. The interconnectable precast concrete filled steel tubular pile according to claim 2, wherein said anchoring reinforcing bars are located at both sides of said connection fastener or vertically disposed at an outer side surface of a non-notched side of said connection fastener.
4. The interconnectable prefabricated concrete filled steel tubular pile according to claim 1, wherein said end plates are vertically provided at inner side surfaces thereof with a plurality of reinforcing bars connected to the concrete pipe anchoring, the length of the reinforcing bars being greater than the diameter of the concrete pipe.
5. The interconnectable precast concrete filled steel tubular pile of claim 1, wherein said semi-circular steel column shell has a wall thickness of 3mm to 30 mm.
6. The interconnectable precast concrete filled steel tubular pile of claim 1, wherein said concrete pipe has an outer diameter of 0.5m to 5m, an inner diameter greater than half of its outer diameter, and a length of 2m to 80 m.
7. The interconnectable precast concrete filled steel tubular pile of claim 1, wherein said connecting fasteners have a wall thickness of 3mm or more.
8. The interconnectable precast concrete filled steel tube pile according to claim 1 or 4, wherein said end plates have a thickness of 10 to 50 mm.
9. The method of manufacturing a precast concrete filled steel tube pile capable of being connected with each other according to claim 1, comprising the steps of:
1) manufacturing a plurality of pin keys which can be used in a circulating way, wherein the cross section size of each pin key is obtained by subtracting the installation clearance from the cross section size of the T-shaped slotted hole of the end plate, and the length of each pin key is larger than the radius of the concrete pipe;
manufacturing a recyclable cylindrical concrete tubular pile mold (M), wherein the concrete tubular pile mold (M) is 2 semi-cylindrical molds (M1, M2), the outer walls of the semi-cylindrical molds (M1, M2) are provided with at least 2 semi-running wheels, the spacing distance of the 2 semi-running wheels is larger than the inner diameter of the semi-cylindrical mold, the semi-cylindrical molds can be buckled and fixed through bolts to form the cylindrical concrete tubular pile mold (M) with the outer wall provided with at least 2 complete running wheels, the inner diameter of the concrete tubular pile mold (M) is equal to the outer diameter of a prefabricated steel tubular concrete tubular pile to be manufactured, and the length of the concrete tubular pile mold (M) is not less than the length of the prefabricated steel tubular concrete tubular pile to be manufactured;
2) two buckling parts of two connecting fasteners are respectively inserted into the inner sides of the L-shaped connecting parts formed on the two side edges of the two semicircular steel column shells, so that the two semicircular steel column shells are connected to form a circular steel pipe; a T-shaped slot is formed by the gap between the inner cavity of each connecting fastener and the L-shaped connecting parts at the end edges of the two semicircular steel column shells; the two semicircular steel column shells are connected with the two connecting fasteners to form a cavity;
3) respectively penetrating the four pin keys through the T-shaped slotted holes of the two end plates and the T-shaped slots of the two connecting fasteners; connecting the two end plates with the two semicircular steel column shells and the two connecting fasteners to form a circular steel pipe for temporary fixation;
4) welding the two end plates with the two semi-circular steel cylinder shells and reserving two T-shaped slots;
5) placing a semi-cylindrical mold (M1) with the axis horizontal on the station, the opening upward and keeping an inclination angle not more than 30 degrees; horizontally placing the two welded end plates, the two connecting fasteners, the two semicircular steel column shells and the four temporarily fixed pin keys in a semicircular cylinder mould (M1); then the semi-cylindrical mould (M2) is opened and downwards buckled on the semi-cylindrical mould (M1), and then the semi-cylindrical moulds (M1 and M2) are connected through bolts to form a complete cylindrical concrete pipe pile mould (M) with the outer wall provided with at least 2 complete running wheels;
6) pouring concrete mixture into the circular steel pipe formed by connecting the two semicircular steel column shells and the two connecting fasteners by adopting a pumping method;
7) horizontally placing the concrete pipe pile mould (M) on a centrifuge, and utilizing a driving wheel of the centrifuge to drive a running wheel of the concrete pipe pile mould (M) to centrifugally form a concrete mixture; two connecting fasteners in the concrete pipe pile mould (M) are symmetrically arranged, so that the prefabricated concrete pipe pile can automatically meet the dynamic balance condition in the high-speed centrifugal forming process, and the temporarily fixed pin key can block the gap of an unwelded gap to control the outflow of slurry during centrifugation;
8) and curing the formed concrete-filled steel tube tubular pile, removing the concrete tubular pile mold (M) and removing the pin key to finish manufacturing the section of the prefabricated concrete-filled steel tube tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195108.3A CN111691403A (en) | 2019-03-14 | 2019-03-14 | Prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195108.3A CN111691403A (en) | 2019-03-14 | 2019-03-14 | Prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111691403A true CN111691403A (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910195108.3A Pending CN111691403A (en) | 2019-03-14 | 2019-03-14 | Prefabricated concrete-filled steel tube tubular pile capable of being connected with each other and manufacturing method thereof |
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| CN202945591U (en) * | 2012-11-21 | 2013-05-22 | 天津港航桩业有限公司 | High-strength concrete prestress prefabricated (PHC) sheet pile |
| CN203498799U (en) * | 2013-09-16 | 2014-03-26 | 鸿厦建设有限公司 | Prefabricated hollow pipe pile water-facing envelop enclosure |
| CN103758115A (en) * | 2014-01-16 | 2014-04-30 | 南京工业大学 | Composite material fold-line-shaped plate connecting structure |
| CN105735249A (en) * | 2016-03-31 | 2016-07-06 | 宝山钢铁股份有限公司 | Two steel plate combined buckle steel pipe centrifugal concrete pile free of longitudinal welding line and prefabrication method |
| CN205676882U (en) * | 2016-05-31 | 2016-11-09 | 中国电建集团华东勘测设计研究院有限公司 | A kind of novel supporting construction |
| US20170145649A1 (en) * | 2013-03-14 | 2017-05-25 | Cmi Limited Co. | Sheet piling and installation method |
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| CN202945591U (en) * | 2012-11-21 | 2013-05-22 | 天津港航桩业有限公司 | High-strength concrete prestress prefabricated (PHC) sheet pile |
| US20170145649A1 (en) * | 2013-03-14 | 2017-05-25 | Cmi Limited Co. | Sheet piling and installation method |
| CN203498799U (en) * | 2013-09-16 | 2014-03-26 | 鸿厦建设有限公司 | Prefabricated hollow pipe pile water-facing envelop enclosure |
| CN103758115A (en) * | 2014-01-16 | 2014-04-30 | 南京工业大学 | Composite material fold-line-shaped plate connecting structure |
| CN105735249A (en) * | 2016-03-31 | 2016-07-06 | 宝山钢铁股份有限公司 | Two steel plate combined buckle steel pipe centrifugal concrete pile free of longitudinal welding line and prefabrication method |
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