CN213952209U - PSB finish rolling screw-thread steel pipe pile prestressing force anti-floating pile structure - Google Patents
PSB finish rolling screw-thread steel pipe pile prestressing force anti-floating pile structure Download PDFInfo
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- CN213952209U CN213952209U CN202021670053.1U CN202021670053U CN213952209U CN 213952209 U CN213952209 U CN 213952209U CN 202021670053 U CN202021670053 U CN 202021670053U CN 213952209 U CN213952209 U CN 213952209U
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Abstract
The utility model provides a PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile structure, including precast tubular pile, PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod, closed stake point, flexible sealing ring, anticorrosive sleeve pipe, supporting anchor slab, anchor head. The method comprises the following steps of driving a precast tubular pile into a soil body by using a pile driver, enabling the diameter of the tubular pile to be larger than or equal to 300mm, placing a PSB finish-rolled threaded steel pipe pile prestress anti-floating pile body into the center of the precast tubular pile after pore forming, filling grouting bodies or concrete, and applying prestress after the strength meets the design requirement to form the PSB finish-rolled threaded steel pipe pile prestress anti-floating pile. Compare traditional anti-floating anchor, use the utility model discloses a PSB finish rolling screw steel-pipe pile prestressing force anti-floating pile device, the resistance to plucking bearing capacity eigenvalue of anti-floating pile can promote greatly, can apply prestressing force, prevents that anti-floating pile from producing the crack, shortens construction period, reduces the steel quantity.
Description
Technical Field
The utility model relates to a foundation engineering technical field, in particular to PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile structure.
Background
In the field of civil engineering, the material of the anti-floating anchor rod basically mainly comprises HRB (high-grade steel) steel bars, but the HRB steel bars have lower tensile strength, and the adoption of the HRB steel bars as the steel bars of the anti-floating anchor rod body can greatly consume the steel bars and occupy a large amount of fields; the PSB finish-rolled deformed steel bar is used as a material of the anti-floating anchor rod, so that the tensile strength of the body of the anchor rod can be effectively improved, and the anti-pulling bearing capacity of the anchor rod is further improved.
At present, anti-floating anchor rod structure is subject to the restriction of pore-forming equipment and technology, and anti-floating anchor rod drilling diameter generally is not more than 200mm, single anti-floating anchor rod structure, and the resistance to plucking bearing capacity is difficult to obtain great promotion, to the higher building of resistance to plucking bearing capacity requirement, only can lean on the quantity that increases building anti-floating anchor rod structure to satisfy its requirement, and can't guarantee construction quality and civilized construction requirement.
Therefore, a PSB finish-rolled deformed steel bar prestressed anti-floating pile structure which can form a hole with a diameter of 300mm or more, can greatly improve anti-floating performance, and is simple to construct is required.
SUMMERY OF THE UTILITY MODEL
In order to achieve the purpose, the utility model provides a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile structure, which comprises a precast tubular pile, a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile rod body, a closed pile tip, a matched anchor plate and an anchor head; the precast tubular pile is cylindrical, the diameter of the precast tubular pile is greater than or equal to 300mm, and a cavity is arranged inside the precast tubular pile; the closed pile tip is arranged at the bottom of the precast tubular pile and is fixedly connected with the precast tubular pile; the precast tubular pile is arranged in a soil body or a rock body at the lower part of a building foundation or a water-resistant plate;
the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body is a round rod, a first through hole is formed in the matched anchor plate, a second through hole is formed in the anchor head, the matched anchor plate and the anchor head are arranged at the upper end of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body and are matched with the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body through the first through hole and the second through hole respectively, the matched anchor plate is arranged at the lower end of the anchor head, and the upper surface of the matched anchor plate is attached to the lower surface of the anchor head; the PSB finish rolling threaded steel pipe pile prestress anti-floating pile body is arranged in a cavity inside the precast tubular pile; the precast tubular pile cavity is used for filling grouting bodies or concrete.
Furthermore, the matched anchor plate and the anchor head are made of PSB finish rolled deformed steel bar.
Further, PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod external periphery is provided with the external screw thread, the inside first through-hole and the second through-hole that sets up of supporting anchor slab and anchor head are the screw hole with corresponding PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod external periphery external screw thread interlock, supporting anchor slab and anchor head are through first through-hole and second through-hole and PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod external screw thread cooperation respectively.
Further, for increasing the uplift bearing capacity characteristic value of the anti-floating pile, the PSB finish rolling threaded steel pipe pile prestress anti-floating pile structure further comprises a plurality of supporting bodies, a first threaded hole is formed in each supporting body, the supporting bodies are matched with the outer circumferential surface external threads of the PSB finish rolling threaded steel pipe pile prestress anti-floating pile body of rod through the first threaded holes, and the supporting bodies are located on the lower portion of the PSB finish rolling threaded steel pipe pile prestress anti-floating pile body of rod.
Further, the supporting body is made of common steel, cast iron or plastic.
Further, PSB finish rolling screw-thread steel-pipe pile prestressing force anti-floating pile structure still includes flexible sealing ring, anticorrosive sleeve pipe and anticorrosive grease, anticorrosive sheathed tube inside is provided with the third through-hole, the inside fourth through-hole that is provided with of flexible sealing ring, anticorrosive sleeve pipe and flexible sealing ring pass through third through-hole and fourth through-hole and correspond PSB finish rolling screw-thread steel-pipe pile prestressing force anti-floating pile body of rod external periphery cooperation, terminal surface laminating under flexible sealing ring up end and the anticorrosive sleeve pipe, terminal surface laminating under anticorrosive sleeve pipe up end and the supporting anchor slab, anticorrosive grease sets up in the inside clearance between the external periphery of the psB finish rolling screw-thread steel-pipe pile prestressing force anti-floating pile body of rod of anticorrosive sleeve pipe third through-hole.
Further, PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile structure still includes the slip casting pipe, the slip casting pipe is the cylinder shape, and inside is provided with the passageway that water supply mud mortar passes through, the slip casting pipe is installed on the PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod, the precast tubular pile cavity is used for filling the slip casting body, the slip casting body is mixed by the rubble of putting into in the precast tubular pile cavity and the cement mortar of pouring into in to the cavity through the slip casting pipe and is made.
And the closed pile tip is fixedly connected with the precast tubular pile in a welding mode.
The utility model discloses a beneficial effect does: the utility model discloses a PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile structure, precast tubular pile use the pile driver to squeeze into the soil body, and the tubular pile diameter is more than or equal to 300mm, places parts such as PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile body of rod in precast tubular pile center again, and then simplifies PSB finish rolling screw thread steel-pipe pile prestressing force anti-floating pile structure construction process, practices thrift construction time and space and occupies, practices thrift steel; and use this PSB finish rolling screw-thread steel-pipe pile prestressing force anti-floating pile device, can effectively improve the efficiency of construction, ensure construction quality and civilized construction, combine PSB finish rolling twisted steel's high strength, the utility model discloses PSB finish rolling screw-thread steel-pipe pile prestressing force anti-floating pile structure resistance to plucking bearing capacity eigenvalue obtains the promotion of great degree than traditional stock, can apply the prestressing force simultaneously, prevents that anti-floating pile from producing the crack.
Drawings
FIG. 1 is a structural schematic diagram of a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile.
In the figure: 1. the prefabricated pipe pile comprises a prefabricated pipe pile, 2. a PSB finish-rolled threaded steel pipe pile prestress anti-floating pile body, 3 matched anchor plates, 4 anchor heads, 5. a bearing body, 6. a concrete cushion layer, 7. a building foundation or a water-resistant plate, 8. a grouting pipe, 9. a grouting body, 10. a closed pile tip, 11 flexible sealing rings and 12 anti-corrosion sleeves.
Detailed Description
The invention will be described in further detail with reference to the embodiment of fig. 1. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
The PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile structure comprises a precast tubular pile 1, a PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 2, a matched anchor plate 3, an anchor head 4, a plurality of supporting bodies 5, a grouting pipe 8, a closed pile tip 10, a flexible sealing ring 11 and an anti-corrosion sleeve 12;
the closed pile tip 10 is connected with the bottom of the precast tubular pile 1 in a welding mode, and the precast tubular pile 1 is formed in a soil body or a rock body at the lower part of a building foundation or a water-resistant plate through a pile driver;
the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body 2 is a round rod, external threads are arranged on the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body 2, the plurality of supporting bodies 5 are made of common steel, cast iron or plastics, a first threaded hole is formed in the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body 2, the supporting bodies 5 are in external thread fit with the external threads on the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body 2 through the first threaded hole, and the supporting bodies 5 are all located in the precast tubular pile 1 after the PS;
the anti-corrosion sleeve 12 and the flexible sealing ring 11 are arranged on the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile rod body 2, the upper end surface of the flexible sealing ring 11 is attached to the lower end surface of the anti-corrosion sleeve 12, the upper end surface of the anti-corrosion sleeve 12 is attached to the lower end surface of the matched anchor plate 3, and the anti-corrosion sleeve 12 and the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile rod body 2 are filled with anti-corrosion grease; the grouting pipe 8 is arranged on the PSB finish rolling threaded steel pipe pile prestress anti-floating pile rod body 2;
a first through hole and a second through hole are formed in the matched anchor plate 3 and the anchor head 4, the first through hole and the second through hole are threaded holes meshed with external threads on the outer circumferential surface of the corresponding PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2, the matched anchor plate 3 and the anchor head 4 are arranged at the upper end part of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2 and are matched with the external threads on the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2 through the first through hole and the second through hole respectively, the matched anchor plate 3 is arranged at the lower end of the anchor head 4, and the upper surface of the matched anchor plate 3 is attached to the lower surface of the anchor head 4;
the PSB finish rolling threaded steel pipe pile prestress anti-floating pile rod body 2 is arranged inside the precast tubular pile 1 and penetrates through the precast tubular pile 1; after finishing, placing broken stones into the cavity of the precast tubular pile 1, and then injecting cement mortar through a grouting pipe 8, wherein the broken stones and the cement mortar form a grouting body 9;
after the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 2 penetrates through the precast tubular pile 1, a part of section is located on the upper portion of a soil body or a rock body at the lower portion of a building foundation or a water-resistant plate, a concrete cushion 6 is poured, a foundation layer or a water-resistant plate 7 is poured on the concrete cushion 6, the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 2 is located on the upper portion of the soil body or the rock body at the lower portion of the building foundation or the water-resistant plate, and after penetrating through the concrete cushion 6, the exposed portion of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 3, the matched anchor plate 3 and the anchor head 4 are.
The construction method of the PSB finish rolling threaded steel pipe pile prestress anti-floating pile structure comprises the following steps:
(1) measuring line
Measuring the elevation of a construction site by using an RTK (real-time kinematic) or total station, determining the depth of a precast tubular pile 1, simultaneously performing release measurement on a PSB (prestressed concrete slab) finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 2, determining the position of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile rod body 2, and welding a closed pile tip 10 at the bottom of the precast tubular pile 1;
(2) pile driver in position and drilling
And (3) straightening, leveling and stabilizing the pile driver, lifting the precast tubular pile 1 to insert into the pile position, and adjusting the verticality so that the central lines of the precast tubular pile 1, the pile hammer and the pile body are on the same straight line. Under the self-weight action of the precast tubular pile 1 and the hammer, the precast tubular pile 1 can sink into the soil layer for 0.2-0.5 m to achieve stability, and then the verticality of the pile is corrected in a crossed mode, so that the verticality deviation is not more than 0.5%. The verticality is mainly controlled by a plumb bob, and the formal piling is allowed after the pile is vertical. In order to prevent the precast tubular pile 1 from being broken, a buffer (such as a paperboard, a wood board and the like with the thickness of about 150-200 mm) is placed between the hammer and the precast tubular pile 1, a heavy hammer is preferably used for low-impact and low-lift heavy driving during pile driving, the hammer can be formally opened for driving when the precast tubular pile 1 reaches a certain depth, and the precast tubular pile 1 is driven into the preset depth;
(3) inserted PSB finish rolling threaded steel pipe pile prestress anti-floating pile body 2
Installing a bearing body 5, an anticorrosive sleeve 12, a flexible sealing ring 11 and a grouting pipe 8 on a PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2, filling anticorrosive grease into a gap between the anticorrosive sleeve 12 and the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2, installing a positioner, hoisting the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2 through a crane, ensuring that the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2 is positioned in the center of a precast tubular pile 1 through the positioner, and inserting the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body 2 into the precast tubular pile 1 to a designed depth;
(4) pouring the grout 9
Placing broken stones into a cavity of the precast tubular pile 1, and then injecting cement mortar to a designed elevation through a grouting pipe 8, wherein the broken stones and the cement mortar form a grouting body 9;
(5) mounting a matched anchor plate 3 and an anchor head 4, performing natural maintenance to obtain a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile structure finished product, and applying prestress;
and (3) removing the positioner after the grout body 9 is preliminarily solidified, naturally maintaining, installing the matched anchor plate 3 and the anchor head 4 on the body 2 of the PSB finish rolling threaded steel pipe pile prestressed anti-floating pile after the strength of the grout body 9 reaches a design value, and applying prestress to obtain a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile structure finished product.
Claims (8)
1. A PSB finish rolling threaded steel pipe pile prestressed anti-floating pile structure is characterized by comprising a precast tubular pile, a PSB finish rolling threaded steel pipe pile prestressed anti-floating pile body, a closed pile tip, a matched anchor plate and an anchor head; the precast tubular pile is cylindrical, the diameter of the precast tubular pile is greater than or equal to 300mm, and a cavity is arranged inside the precast tubular pile; the closed pile tip is arranged at the bottom of the precast tubular pile and is fixedly connected with the precast tubular pile; the precast tubular pile is arranged in a soil body or a rock body at the lower part of a building foundation or a water-resistant plate;
the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body is a round rod, a first through hole is formed in the matched anchor plate, a second through hole is formed in the anchor head, the matched anchor plate and the anchor head are arranged at the upper end of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body and are matched with the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile body through the first through hole and the second through hole respectively, the matched anchor plate is arranged at the lower end of the anchor head, and the upper surface of the matched anchor plate is attached to the lower surface of the anchor head; the PSB finish rolling threaded steel pipe pile prestress anti-floating pile body is arranged in a cavity inside the precast tubular pile; the precast tubular pile cavity is used for filling grouting bodies or concrete.
2. The PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile structure according to claim 1, wherein the mating anchor plate and anchor head are made of PSB finish-rolled threaded steel.
3. The PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile structure according to claim 1, wherein external threads are arranged on the outer circumferential surface of the body of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile, first through holes and second through holes which are formed in the matched anchor plate and the anchor head are threaded holes which are meshed with the external threads on the outer circumferential surface of the body of the corresponding PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile, and the matched anchor plate and the anchor head are respectively matched with the external threads on the outer circumferential surface of the body of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile through the first through holes and the second through holes.
4. The PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile structure according to claim 3, characterized in that the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile structure further comprises a plurality of supporting bodies, wherein first threaded holes are formed in the supporting bodies, and the supporting bodies are in external thread fit with the outer circumferential surface of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body through the first threaded holes and are located at the lower portion of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile body.
5. The PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile structure of claim 4, wherein said supporting body is made of general steel, cast iron or plastic.
6. The PSB finish rolling threaded steel pipe pile pre-stressed anti-floating pile structure according to claim 1, characterized in that the PSB finish rolling threaded steel pipe pile pre-stressed anti-floating pile structure further comprises a flexible sealing ring, an anti-corrosion sleeve and anti-corrosion grease, wherein a third through hole is formed in the anti-corrosion sleeve, a fourth through hole is formed in the flexible sealing ring, the anti-corrosion sleeve and the flexible sealing ring are matched with the outer circumferential surface of the corresponding PSB finish rolling threaded steel pipe pile pre-stressed anti-floating pile body through the third through hole and the fourth through hole, the upper end surface of the flexible sealing ring is attached to the lower end surface of the anti-corrosion sleeve, the upper end surface of the anti-corrosion sleeve is attached to the lower end surface of a matched anchor plate, and the anti-corrosion grease is arranged in a gap between the inside the third through hole of the anti-corrosion sleeve and the outer circumferential surface of the PSB finish rolling threaded steel pipe pile pre-stressed anti-floating pile body.
7. The PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile structure according to claim 1, characterized in that the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile structure further comprises a grouting pipe, wherein the grouting pipe is cylindrical, a passage for cement mortar to pass through is arranged inside the grouting pipe, the grouting pipe is installed on a body of the PSB finish-rolled threaded steel pipe pile pre-stressed anti-floating pile, the precast pipe pile cavity is used for filling grouting body, and the grouting body is formed by mixing broken stones placed in the precast pipe pile cavity and cement mortar injected into the cavity through the grouting pipe.
8. The PSB finish-rolled threaded steel pipe pile prestressed anti-floating pile structure according to claim 1, characterized in that the closed pile tip is fixedly connected with the precast pipe pile by welding.
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| CN202021670053.1U CN213952209U (en) | 2020-08-12 | 2020-08-12 | PSB finish rolling screw-thread steel pipe pile prestressing force anti-floating pile structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802553A (en) * | 2021-09-18 | 2021-12-17 | 中国华冶科工集团有限公司 | Test anchor rod construction device and anti-floating test method |
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2020
- 2020-08-12 CN CN202021670053.1U patent/CN213952209U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802553A (en) * | 2021-09-18 | 2021-12-17 | 中国华冶科工集团有限公司 | Test anchor rod construction device and anti-floating test method |
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