CN216041124U - Steel strand prestressed concrete uplift pipe pile - Google Patents
Steel strand prestressed concrete uplift pipe pile Download PDFInfo
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- CN216041124U CN216041124U CN202122298392.2U CN202122298392U CN216041124U CN 216041124 U CN216041124 U CN 216041124U CN 202122298392 U CN202122298392 U CN 202122298392U CN 216041124 U CN216041124 U CN 216041124U
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Abstract
The application discloses steel strand wires prestressed concrete resistance to plucking tubular pile, its technical scheme includes: pile body to and locate the end plate at pile body both ends, the pile body is hollow circular cylinder, the pile body includes the pile cuff and locates the inboard spiral stirrup of pile cuff, the end plate uses the end plate center evenly to be equipped with the steel strand wires on the same circumference position as the centre of a circle, the through-hole has been seted up on the end plate, just the steel strand wires are close to the both ends of horizon line and wear out the through-hole and pass through clamping piece anchor and end plate anchor fixed, and this application can improve the welded joint of concrete pipe pile end plate and prestressed steel bar junction and more weak, problem that shear strength is low when using.
Description
Technical Field
The application relates to the field of uplift pipe piles, in particular to a steel strand prestressed concrete uplift pipe pile.
Background
Along with the pace of urbanization in China, underground space development and utilization are rapidly developed, and buildings with uplift requirements are increasing day by day, wherein the uplift pipe piles refer to piles which are driven for offsetting the buoyancy force generated by water in soil on the structure if the underground structure of the building engineering is lower than the part of the water level of the surrounding soil, and are widely applied to the anchor pile foundation of large basements for uplift, uplift of high-rise buildings, uplift of offshore wharf platforms, suspension bridges and cable-stayed bridges.
A present prestressed pipe pile, including pile body and end plate, the pile body is hollow cylindrical structure, the end plate is discoid structure, pile body concrete has been laid in the pile body, still be equipped with the steel reinforcement cage in the pile body, the steel reinforcement cage includes prestressed steel bar and spiral stirrup, the prestressed steel bar is cylindrical shaft-like structure, and prestressed steel bar and end plate pass through welding mode fixed connection, pile body middle part spiral stirrup interval is 80mm, the pile body both ends all are equipped with stirrup encryption district, the spiral stirrup interval that sets up in the stirrup encryption district is 45mm, the outer one deck anticorrosive coating of tubular pile, the anticorrosive coating is outer at pile body concrete, anticorrosive coating is cement base anticorrosive coating, be provided with a plurality of owner's muscle hole and stretch-draw screw hole along its circumferencial direction on the end plate, main muscle anchor hole and stretch-draw screw hole link together.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the joint of the concrete pipe pile end plate and the prestressed steel bar is welded, the welding joint is often the weak part of the pile body, the shear strength is low, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to improve the welded joint of concrete tubular pile end plate and prestressing steel bar junction comparatively weak, problem that shear strength is low, this application provides a steel strand wires prestressed concrete resistance to plucking tubular pile.
The application provides a pair of steel strand wires prestressed concrete resistance to plucking tubular pile adopts following technical scheme:
the utility model provides a steel strand wires prestressed concrete resistance to plucking tubular pile, includes the pile body to and locate the end plate at pile body both ends, the pile body is hollow circular cylinder, the pile body includes pile cuff and locates the inboard spiral stirrup of pile cuff, evenly be equipped with the steel strand wires on using the same circumference position of end plate center as the centre of a circle, the through-hole has been seted up on the end plate, just the through-hole is worn out through-hole and is passed through clamping piece anchor and fixed with the end plate near the both ends of the steel strand wires of horizon.
Through adopting above-mentioned technical scheme, the steel strand wires that set up, tensile strength is high and corrosion resistance is good, can effectively improve the resistance to plucking ability of tubular pile, reduces the arrangement of reinforcement area, realizes that the cost reduction increases, fixes the both ends of steel strand wires on the end plate through clamping piece anchor, can improve the welded joint of concrete tubular pile end plate and rod iron junction comparatively weak, problem that shear strength is low.
Optionally, the clamping piece anchor is including locating the anchor block on the end plate, set up the anchor eye corresponding with the through-hole on the anchor block, the steel strand wires pass the anchor eye on the anchor block, the fixed block is installed to the bilateral symmetry of anchor eye, rectangular shape groove has been seted up in the fixed block, the extending direction in rectangular shape groove is mutually perpendicular with the extending direction that the fixed block is close to the side of steel strand wires one end, the rectangular shape inslot of fixed block is equipped with the clamping component who presss from both sides tight steel strand wires.
Through adopting above-mentioned technical scheme, the centre gripping subassembly that sets up can make firm the fixing on the anchor block of steel strand wires, can effectively improve the resistance to plucking ability of tubular pile to can improve the welded joint of concrete tubular pile end plate and prestressing steel bar junction comparatively weak, problem that shear strength is low.
Optionally, clamping component locates the inner tube of rectangular shape inslot including sliding, the outside symmetry of inner tube is equipped with rectangular shape piece, the spout with rectangular shape piece looks adaptation is seted up to the symmetry on the lateral wall in rectangular shape groove, the extending direction of inner tube, rectangular shape piece and spout all is unanimous with the extending direction in rectangular shape groove, the clamping piece of centre gripping steel strand wires is installed to the one end that the inner tube is close to steel strand wires.
Through adopting above-mentioned technical scheme, the inner tube that sets up can slide along the extending direction in rectangular shape groove in rectangular shape inslot to can make the clamping piece of being connected with the inner tube live the steel strand wires centre gripping, realize the fixed to the steel strand wires, then can effectual improvement tubular pile resistance to plucking ability.
Optionally, the clamping piece is including locating the inner tube and being close to the arc grip block of steel strand wires one end, the arcwall face of arc grip block sets up to the one side of being close to the steel strand wires, just be equipped with the screw hole with the screw thread looks adaptation in the steel strand wires outside on the arcwall face of arc grip block, the one end that the steel strand wires were kept away from to the inner tube is equipped with the driving piece of drive arc grip block centre gripping steel strand wires.
Through adopting above-mentioned technical scheme, the arc grip block of setting can be effectual with steel strand wires centre gripping, and the screw hole of setting and the external screw thread looks adaptation of steel strand wires can increase the frictional force of steel strand wires and arc, make the grip block can be with more firm of steel strand wires centre gripping.
Optionally, the driving piece is including locating the inside threaded rod with inner tube threaded connection of inner tube, the extending direction of threaded rod is unanimous with the extending direction of inner tube, the one end that the inner tube was kept away from to the threaded rod is worn out rectangular shape groove and fixedly connected with and is kept away from the turning block that one side of steel strand wires contacted with the fixed block.
Through adopting above-mentioned technical scheme, the turning block of setting can drive the threaded rod and rotate, and threaded rod and inner tube threaded connection set up the rectangular shape piece in the inner tube outside and can slide in the spout to can realize that the inner tube slides along the extending direction in rectangular shape groove at rectangular shape inslot, then can realize the centre gripping of grip block steel strand wires.
Optionally, the two sides of the steel strand on one side of the end plate, which is far away from the anchor block, are symmetrically and vertically provided with the inserted rods, and a buffer part for abutting against the steel strand is arranged between the two inserted rods.
Through adopting above-mentioned technical scheme, the bolster of setting can further play the effect of buffering to the steel strand wires, can improve its tensile strength to can further improve the welded joint of concrete pipe pile end plate and rod iron junction comparatively weak, problem that shear strength is low.
Optionally, the bolster includes that the inserted bar is located to the level and is close to the telescopic link of steel strand wires one side to and the compression spring in the telescopic link outside is established to the cover, compression spring's one end and inserted bar fixed connection, compression spring's the other end is equipped with the arc, the size of arc and steel strand wires's size looks adaptation, one side that the arc is close to steel strand wires is equipped with anti-skidding stripe.
Through adopting above-mentioned technical scheme, telescopic link, compression spring and the arc that sets up can make the arc support the both sides of pressing the steel strand wires, when playing the cushioning effect, can also play the effect of pressing to the steel strand wires.
Optionally, a fastening bolt is arranged on the contact surface of the steel strand and the end plate, which is far away from one side of the anchor block.
Through adopting above-mentioned technical scheme, the fastening bolt that sets up not only can strengthen being connected between steel strand wires and the anchor block, can further strengthen the anti-shear force of the junction of concrete pipe pile end plate and steel strand wires moreover.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the steel strand is arranged, so that the pulling resistance of the tubular pile can be effectively improved, the inner tube, the arc-shaped clamping block, the threaded rod and the rotating block are arranged in the fixed block, the threaded rod can be rotated through the rotating block, the strip-shaped block arranged on the outer side of the inner tube can slide in the sliding groove, the rotation of the threaded rod can drive the inner tube to slide in the strip-shaped groove along the extending direction of the strip-shaped groove, and the clamping of the clamping block on the steel strand can be realized;
2. the telescopic link, compression spring and the arc that set up can utilize compression spring's elastic force, make the arc carry out the centre gripping to the steel strand wires, can play the cushioning effect to the steel strand wires on the one hand, and on the other hand can also play the effect of location to the steel strand wires to can strengthen its tensile strength, increase the anti-shear force of steel strand wires and end plate junction.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is an enlarged schematic view of part A in the embodiment of the present application;
fig. 3 is an enlarged schematic view of part B in the embodiment of the present application.
Reference numerals: 1. a pile body; 11. a pile hoop; 12. a spiral stirrup; 2. an end plate; 21. an anchor block; 22. a fixed block; 23. an inner barrel; 231. an arc-shaped clamping block; 232. a threaded rod; 233. rotating the block; 24. a strip-shaped block; 25. inserting a rod; 26. a telescopic rod; 27. a compression spring; 28. an arc-shaped plate; 3. And (4) steel strands.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a steel strand prestressed concrete uplift pipe pile, and the steel strand prestressed concrete uplift pipe pile comprises a pile body 1, wherein the pile body 1 is cylindrical, the inside of the pile body 1 is hollow, the pile body 1 comprises a pile hoop 11 and a spiral hoop 12 arranged on the inner side of the pile hoop 11, the length of the pile hoop 11 is 8-10 m, the spiral hoop 12 is made of a cold-drawn low-carbon steel wire or a low-carbon steel hot-rolled disc strip, cement poured in the pile body 1 is cement with the grade not lower than 42.5, the concrete strength grade is C80, end plates 2 are arranged at two ends of the pile body 1, the end plates 2 and the pile hoop 11 are made of Q235 steel, steel strands 3 are uniformly arranged at the same circumferential position of the end plates 2 by taking the center of the end plates 2 as the circle center, the nominal tensile strength of the steel strands 3 is not lower than 1860MPa, through holes are formed in the end plates 2, two ends of the steel strands 3 close to a horizon line can penetrate through the through holes and are fixed with the end plates 2 through a clamping piece anchoring device, in addition, the contact surface of the steel strand 3 and the end plate 2 on the side of the end plate 2 far away from the anchor seat 21 is provided with a fastening bolt, so that the connection between the steel strand 3 and the end plate 2 can be further strengthened.
In this embodiment, referring to fig. 1 and 2, the clip anchoring device includes an anchor base 21 disposed on the end plate 2, an anchor hole corresponding to the through hole is formed in the anchor base 21, the steel strand 3 can pass through the anchor hole in the anchor base 21, fixing blocks 22 are symmetrically mounted on the anchor base 21 on two sides of the anchor hole, the fixing blocks 22 are arranged in a cube shape, and a strip-shaped groove is formed in the fixing block 22, and an extending direction of the strip-shaped groove is perpendicular to an extending direction of a side surface of the fixing block 22 close to one end of the steel strand 3.
In order to effectively fix the steel strand 3 on the anchor seat 21 and realize the flexible connection between the steel strand 3 and the end plate 2 to enhance the shearing resistance of the joint of the pile body 1 and the steel strand 3, a clamping component for clamping the steel strand 3 is arranged in the strip-shaped groove of the fixed block 22, in the embodiment, the clamping component comprises an inner cylinder 23 arranged in the strip-shaped groove in a sliding manner, the inner cylinder 23 is arranged in a hollow cylindrical manner, the extension direction of the inner cylinder 23 is consistent with the extension direction of the strip-shaped groove, strip-shaped blocks 24 are symmetrically arranged on the outer side of the inner cylinder 23, sliding grooves matched with the shape of the strip-shaped blocks 24 are symmetrically arranged on the side wall of the strip-shaped groove, the extension directions of the strip-shaped blocks 24 and the sliding grooves are consistent with the extension direction of the strip-shaped groove, the strip-shaped blocks 24 can slide in the sliding grooves, the arrangement of the strip-shaped blocks 24 and the sliding grooves can limit the inner cylinder 23 to slide only in the strip-shaped groove, the steel strand 3 can not rotate in the elongated slot, and one end of the inner cylinder 23 close to the steel strand 3 is provided with a clamping piece for clamping the steel strand 3.
In order to make steel strand wires 3 can fix on anchor block 21, in this embodiment, refer to fig. 2, the clamping piece is including setting up the arc grip block 231 that is close to 3 one ends of steel strand wires at inner tube 23, the arcwall face of arc grip block 231 sets up the one side of being close to 3 steel strand wires, and set up the screw hole with the screw thread looks adaptation in the steel strand wires 3 outside on the arcwall face of arc grip block 231, can increase the frictional force between arc grip block 231 and the steel strand wires 3, the one end of keeping away from 3 steel strand wires at inner tube 23 is equipped with the driving piece of drive arc grip block 231 centre gripping 3 steel strand wires, the driving piece can drive arc grip block 231 can be to 3 firm centre grippings of carrying on of steel strand wires.
In this embodiment, the driving piece is including locating the inside threaded rod 232 of inner tube 23, the inside of inner tube 23 is equipped with the internal thread and can makes inner tube 23 and threaded rod 232 threaded connection, the extending direction of threaded rod 232 is unanimous with the extending direction of inner tube 23, the one end that inner tube 23 was kept away from to threaded rod 232 wears out rectangular shape groove and fixedly connected with turning block 233, turning block 233 contacts with one side that steel strand wires 3 was kept away from to fixed block 22, the size of turning block 233 is far less than the size of fixed block 22, turning block 233 can rotate on the contact surface with fixed block 22, drive turning block 233 rotates and can drive threaded rod 232 and rotate, threaded rod 232 rotates and can drive inner tube 23 and slide in rectangular shape inslot, thereby can make the arc grip block 231 with inner tube 23 fixed connection carry out the centre gripping to steel strand wires 3, realize the fixed of steel strand wires 3 and end plate 2.
In order to further improve the tensile property of the steel strand 3, the shearing resistance of the joint of the pile body 1 and the steel strand 3 is enhanced, refer to fig. 3, insertion rods 25 are symmetrically and vertically arranged on two sides of the steel strand 3 on one side of the end plate 2 far away from the anchor seat 21, a buffer member for abutting against the steel strand 3 is arranged between the two insertion rods 25, the buffer member comprises a telescopic rod 26 horizontally arranged on one side of the insertion rod 25 close to the steel strand 3, and a compression spring 27 sleeved on the outer side of the telescopic rod 26, one end of the compression spring 27 is fixedly connected with the insertion rods 25, the other end of the compression spring 27 is fixedly connected with an arc-shaped plate 28, the size of the arc-shaped plate 28 is matched with the size of the steel strand 3, one side of the arc-shaped plate 28 close to the steel strand 3 is provided with anti-slip stripes, the anti-slip stripes can increase the friction force between the arc-shaped plate 28 and the steel strand 3, and the arc-shaped plate 28 and the steel strand 3 can be more firmly connected.
The implementation principle of the 3 prestressed concrete uplift pipe piles of steel strand in the embodiment of the application is as follows: when the steel strand 3 passes through the through hole of the end plate 2 and the anchor hole of the anchor block 21, the steel strand 3 is fixedly connected with the anchor block 21 through the single-plate anchoring device, the steel strand 3 and the end plate 2 are fixedly connected with one side far away from the anchor block 21 through the fastening bolt, in the single-plate anchoring device, the driving rotating block 233 rotates to drive the threaded rod 232 to rotate, the threaded rod 232 rotates to drive the inner cylinder 23 to slide towards one side close to the steel strand 3 in the elongated groove along the extending direction of the elongated groove, the clamping of the arc-shaped clamping block 231 on the steel strand 3 is realized, the steel strand 3 is fixed, and the flexible connection between the steel strand 3 and the end plate 2 enhances the shearing resistance of the joint of the pile body 1 and the steel strand 3.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a steel strand wires prestressed concrete resistance to plucking tubular pile which characterized in that: including pile body (1) to and locate end plate (2) at pile body (1) both ends, pile body (1) is hollow circular cylinder, pile body (1) is including pile hoop (11) and locate inboard spiral stirrup (12) of pile hoop (11), evenly be equipped with steel strand wires (3) on end plate (2) use end plate (2) center as the same circumference position of the centre of a circle, the through-hole has been seted up on end plate (2), just the both ends of steel strand wires (3) are worn out the through-hole and are passed through clamping piece anchor and fixed with end plate (2).
2. The steel strand prestressed concrete uplift pipe pile as claimed in claim 1, wherein: clamping piece anchor is including locating anchor block (21) on end plate (2), set up the anchor eye corresponding with the through-hole on anchor block (21), anchor eye on anchor block (21) is passed in steel strand wires (3), fixed block (22) are installed to the bilateral symmetry of anchor eye, the rectangular shape groove has been seted up in fixed block (22), the extending direction in rectangular shape groove is mutually perpendicular with the extending direction that fixed block (22) are close to the side of steel strand wires (3) one end, be equipped with the clamping component who presss from both sides tight steel strand wires (3) in the rectangular shape inslot of fixed block (22).
3. The steel strand prestressed concrete uplift pipe pile as claimed in claim 2, wherein: clamping component locates inner tube (23) of rectangular shape inslot including the slip, the outside symmetry of inner tube (23) is equipped with rectangular shape piece (24), the spout with rectangular shape piece (24) looks adaptation is seted up to the symmetry on the lateral wall in rectangular shape groove, the extending direction of inner tube (23), rectangular shape piece (24) and spout all is unanimous with the extending direction in rectangular shape groove, the clamping piece of centre gripping steel strand wires (3) is installed to the one end that inner tube (23) are close to steel strand wires (3).
4. The steel strand prestressed concrete uplift pipe pile as claimed in claim 3, wherein: the clamping piece is including locating arc grip block (231) that inner tube (23) are close to steel strand wires (3) one end, the arcwall face of arc grip block (231) sets up to the one side that is close to steel strand wires (3), just be equipped with the screw hole with the screw thread looks adaptation in the steel strand wires (3) outside on the arcwall face of arc grip block (231), the one end that steel strand wires (3) were kept away from in inner tube (23) is equipped with the driving piece that drives arc grip block (231) centre gripping steel strand wires (3).
5. The steel strand prestressed concrete uplift pipe pile as claimed in claim 4, wherein the steel strand prestressed concrete uplift pipe pile comprises: the driving piece is including locating inner tube (23) inside threaded rod (232) with inner tube (23) threaded connection, the extending direction of threaded rod (232) is unanimous with the extending direction of inner tube (23), the one end that inner tube (23) were kept away from in threaded rod (232) is worn out rectangular shape groove and fixedly connected with and is kept away from turning block (233) that one side of steel strand wires (3) contacted with fixed block (22).
6. The steel strand prestressed concrete uplift pipe pile as claimed in claim 2, wherein: the steel strand wires (3) bilateral symmetry on one side of anchor block (21) is kept away from in end plate (2) is equipped with inserted bar (25) perpendicularly, two be equipped with the bolster that supports and press steel strand wires (3) between inserted bar (25).
7. The steel strand prestressed concrete uplift pipe pile as claimed in claim 6, wherein: the bolster includes that the level is located inserted bar (25) and is close to telescopic link (26) on one side of steel strand wires (3) to and the cover establishes compression spring (27) in the telescopic link (26) outside, the one end and inserted bar (25) fixed connection of compression spring (27), the other end of compression spring (27) is equipped with arc (28), the size of arc (28) and the size looks adaptation of steel strand wires (3), one side that arc (28) are close to steel strand wires (3) is equipped with anti-skidding stripe.
8. The steel strand prestressed concrete uplift pipe pile as claimed in claim 2, wherein: and a fastening bolt is arranged on the contact surface of the end plate (2) on one side of the steel strand (3) and the end plate (2) far away from the anchor block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122298392.2U CN216041124U (en) | 2021-09-22 | 2021-09-22 | Steel strand prestressed concrete uplift pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122298392.2U CN216041124U (en) | 2021-09-22 | 2021-09-22 | Steel strand prestressed concrete uplift pipe pile |
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| Publication Number | Publication Date |
|---|---|
| CN216041124U true CN216041124U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122298392.2U Active CN216041124U (en) | 2021-09-22 | 2021-09-22 | Steel strand prestressed concrete uplift pipe pile |
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| CN (1) | CN216041124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960736A (en) * | 2022-07-07 | 2022-08-30 | 东北电力大学 | Post-tensioning method prestressed pile for power transmission line foundation engineering and construction method |
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2021
- 2021-09-22 CN CN202122298392.2U patent/CN216041124U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960736A (en) * | 2022-07-07 | 2022-08-30 | 东北电力大学 | Post-tensioning method prestressed pile for power transmission line foundation engineering and construction method |
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