CN108677945A - A kind of opening prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod - Google Patents
A kind of opening prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod Download PDFInfo
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- CN108677945A CN108677945A CN201810524694.7A CN201810524694A CN108677945A CN 108677945 A CN108677945 A CN 108677945A CN 201810524694 A CN201810524694 A CN 201810524694A CN 108677945 A CN108677945 A CN 108677945A
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
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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
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to ground foundation engineering technical fields, it is related to a kind of open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod, one end of GFRP anti-float anchor rod body of rod locators is bound on the GFRP anti-float anchor rod bodies of rod, the other end is bound at doughnut-shaped steel plate reserving hole, hold-down support is mounted on smooth ground, centering holder is mounted on the GFRP anti-float anchor rod bodies of rod and is connect with open PHC piles, it reserves and is formed with screw thread part circular hole on inner wall in the center of enlarged footing, enlarged footing is mounted on the outer surface on GFRP anti-float anchor rod bodies of rod top and is cast in sole plate, circular steel plate is put into inside open PHC piles；Inverted L-shaped reinforcing bar is welded with circular steel plate, and on the ground, sole plate is arranged on bed course setting cushion, simple in structure, install fast and convenient, operability is strong, energy conservation and environmental protection, and economic benefit and social benefit are notable, the working procedure for individually doing anti-float anchor rod is reduced, shortens the construction period, reduces cost.
Description
Technical field：
The invention belongs to ground foundation engineering technical field, it is related to a kind of composite material anti-float anchor rod and prestressed high-strength is mixed
The integrated anti-floating system of solidifying soil pile pile, especially a kind of open prestressed high strength coagulation pile pile are integrated with anti-float anchor rod anti-
Floating device.
Background technology：
PHC piles with its with industrial scale life quality it is easily controllable and check, pile sinking
Quality is more guaranteed than bored concrete pile, bearing capacity of single pile is high, adaptable to engineering geological condition, the construction period is short, construction site without
The advantages that pollution, has been widely used in the field of civil engineering such as industry and civil buildings, highway bridge, harbour, has become China and answer
With one of widest pile-type.In particular by the PHC piles of static pressure construction, meet green assembly
The developing direction of formula.
But with being continuously increased for the utilization of the underground space and building embedded depth of foundation, anti-floating problem is also following.
And pressure bearing pile itself cannot support the harm that underground water anti-floating power is brought, so it is highly important to select suitable measure of anti float.
Compared with the measure of anti float such as Yield rainfall relation method, ballast method, uplift pile, anti-float anchor rod has ground adaptability strong, and dispersive stress is convenient for
It the advantages that construction, saving construction cost, is widely applied in field of civil engineering.Currently, the material of anti-float anchor rod is substantially with steel
Environment based on muscle, and residing for anti-float anchor rod is poor, throughout the year in underwater or alternation of wetting and drying region, present in underground water
Chlorion makes reinforced anchor bolt by chemical attack.Especially in Construction of Urban Rail Traffic, the stray electrical current of generation makes reinforcing bar anchor
Bar greatly reduces the service life of anti-float anchor rod, therefore, the Anticorrosion of anchor structure is more simultaneously by electrochemical corrosion
It is prominent, but the Anticorrosion of anchor pole obtains the breakthrough of essence and uses nonmetallic materials anchor in this case not yet at present
Bar becomes optimal selection.GFRP (Glass Fiber Reinforced Polymer) material is using glass fibre as strengthening material
Material, synthetic resin is basis material, also has the unsaturated polyester (UP) tree of a variety of auxiliary agents such as curing agent, accelerating agent using silvalin dipping
After the resin adhesive liquids such as fat, by pultrusion, a kind of composite material for winding screw thread, curing one-pass molding and being formed, GFRP anchor poles tool
Have the advantages that tensile strength height, light weight, anticorrosive, anti-electromagnetic interference capability be strong, low cost, in recent years slope reinforcement,
There are more research and application in the fields such as pattern foundation pit supporting structure.
Urban construction at present is just in progress like a raging fire, and the usage amount of anti-float anchor rod is continuously increased, GFRP anti-float anchor rods
It is a urgent and significant job using advantageously reducing project cost and building safety engineering.Nowadays by prestressing force
High-strength concrete pipe pile and GFRP anti-float anchor rods combine anti-floating, on the one hand can compensate PHC piles
Vertical compression bearing capacity, it is cost-effective；Without drilling when another aspect anti-float anchor rod is constructed, the disengaging of large scale equipment is avoided
, equally reduce project cost, it is seen then that economic benefit is very notable.Therefore, a kind of reasonable, reliable prestressed high-strength of design
Spend coagulation pile pile anti-floating system integrated with composite material anti-float anchor rod it is extremely urgent, have broad application prospects with it is good
Economic benefit.
Invention content：
It is an object of the invention to overcome disadvantage of the existing technology, under the premise of not improving cost, provide one
Kind of open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod is good by corrosion resistance, tensile strength is high
Nonmetallic materials be attached as the anti-float anchor rod body of rod, and by anti-float anchor rod and PHC piles, make
It obtains PHC piles to be linked together with anti-float anchor rod, reduces working procedure, shorten the construction period, reduce cost, it is real
Existing PHC piles can resist vertical pressure with but also resist the target of buoyancy force of underground water.
To achieve the goals above, open prestressed high strength coagulation pile pile of the present invention is integrated with anti-float anchor rod anti-
The agent structure of floating device includes GFRP anti-float anchor rod bodies of rod locator, hold-down support, centering holder, GFRP anti-float anchor rod bars
Body, open PHC piles, enlarged footing, inverted L-shaped reinforcing bar, circular steel plate, bed course, sole plate；GFRP is anti-
One end of drogue club shaft locator is bound on the GFRP anti-float anchor rod bodies of rod, other end binding doughnut-shaped steel plate in hold-down support
Reserving hole at, prevent the GFRP anti-float anchor rod bodies of rod of centering from sliding downwards, it is ensured that anchorage length meets design requirement；Gu
Bearing is determined on smooth ground, to ensure its stability；Centering holder be mounted on the GFRP anti-float anchor rod bodies of rod on and with
Open PHC piles connection, it is ensured that the GFRP anti-float anchor rod bodies of rod are in open prestressed high strength concrete
On the center line in pile pile aperture；The GFRP anti-float anchor rod bodies of rod are the solid anchor pole of full thread glass fiber reinforced polymer, anchoring
Length is determined with diameter according to anchor force；The material of enlarged footing is glass fiber reinforced polymer material (with GFRP anti-float anchor rods
The material identical of the body of rod), circular hole is reserved at center, screw thread is formed on the inner wall of aperture, the size in aperture is according to GFRP anti-float anchor rod bars
Body diameter determines that the outer profile diameter of enlarged footing is 5 times of reserved Circularhole diameter, and enlarged footing is mounted in a manner of screw thread couple
The outer surface on GFRP anti-float anchor rod bodies of rod top is simultaneously cast in sole plate, the screw thread of enlarged footing and the GFRP anti-float anchor rod bodies of rod
It is 2 that mass ratio is marked at coupling:On the one hand 1 epoxy resin and EP type curing agent mixed liquors is used to increase the stress of anchored end
Area, diffusion-induced stress improve the effect of anchor force, on the other hand can realize the purpose of sealing；Inverted L-shaped reinforcing bar is by diameter 8mm's
Plain bar is made, and length is determined according to anchorage length；The thickness of circular steel plate is 4mm, and diameter is slightly less than prestressing force
The internal diameter of high-strength concrete pipe pile, circular steel plate are just put into inside open PHC piles；Inverted L-shaped steel
Muscle is welded with circular steel plate, and the edge of circular steel plate is uniformly distributed in 120 ° of angle, avoids open prestressed high-strength
It spends and injects anchorage mortar in the long range of the entire stake of concrete tubular pile, only inject anchor within the scope of the anchorage depth determined by anchor force
Gu mortar achievees the purpose that save material, reduces cost；Bed course is made of C15 microlith element mixed muds, and setting cushion is on ground
On, top surface smoothes out, its surfacing is made to be convenient for also functioning to the effect of protection sole plate in assembling reinforcement above；Basic bottom
Plate is made of armored concrete, according to construction drawing and《Code for design of building》The requirement of (GB50007-2011) into
Row is constructed and is arranged on bed course, and the length that the GFRP anti-float anchor rod bodies of rod anchor into sole plate is determined by anchor force.
GFRP anti-float anchor rods body of rod locator of the present invention is made of iron wire, specification 18#, a diameter of 1.6mm, length
Degree is determined according to the anchorage length of anti-float anchor rod.
Hold-down support of the present invention is welded by seamless steel pipe and doughnut-shaped steel plate, and the height of seamless steel pipe is by open pre-
The height that stress high-strength concrete pipe pile bassets is adjusted, and is higher by PHC piles stake top upper surface extremely
Few 10cm, diameter is bigger 10cm than PHC piles stake diameter, and the width of doughnut-shaped steel plate is 8cm, doughnut-shaped steel plate
Upper to reserve symmetrical hole, the size of hole makes GFRP anti-float anchor rod body of rod locators pass through, for fixing GFRP anti-floating anchors
Club shaft locator, to prevent the GFRP anti-float anchor rod bodies of rod from sliding up and down.
Centering holder of the present invention by bolt, nut, steel valve, the first steel disc, steel sleeve, the second steel disc, trapezoidal steel disc,
Silk stick, the seamless steel pipe of interior mantle fiber, ribbed stiffener steel disc composition, wherein steel valve is made of seamless steel pipe by 90 ° of even partitions,
Diameter determines that the first steel disc is welded at the both ends of steel valve, and in the shape of the first steel disc according to the diameter of the GFRP anti-float anchor rod bodies of rod
Heart position reserving hole, hole are sized so that bolt passes through, and adjacent steel valve is of coupled connections by screw bolt and nut one
It rises, the bond stress of steel valve and the GFRP anti-float anchor rod bodies of rod is improved by tightening screw bolt and nut；On the Axisymmetric Distributed Line of each steel valve
Weld steel sleeve along steel valve outer surface, steel sleeve is made of seamless steel pipe, thickness 2mm, a diameter of 2.5cm, length according to
The internal diameter of open PHC piles determines, and ensures that length of the stick in steel sleeve is in steel sleeve foreign minister
Twice of degree, so that it is determined that the length of wire vent stick, silk stick is the solid iron staff of diameter 2cm, and surface is threaded, the second steel disc
The length of side be 5cm, thickness 2mm, one end of silk stick is mounted in steel sleeve, and the other end is welded in the centre of form of the second steel disc,
Forced area for increasing open PHC piles inner wall improves overall stability, interior mantle fiber seamless steel
The diameter of pipe determines that interior mantle fiber seamless steel pipe is connect with silk stick by way of screw thread couple, length according to the diameter of silk stick
For 3cm, trapezoidal steel disc height is 5cm, and thickness 2mm, trapezoidal steel disc is welded on the outer wall of interior mantle fiber seamless steel pipe, in interior mantle fiber
Ribbed stiffener steel disc is welded between seamless steel pipe and trapezoidal steel disc, ribbed stiffener steel disc shape is triangle, thickness 2mm, two right angles
The length of side on side is 3cm, the strength and stability for enhancing trapezoidal steel disc and interior mantle fiber seamless steel pipe, when installing centering holder
The interior mantle fiber seamless steel pipe on silk stick is adjusted, the GFRP anti-float anchor rod bodies of rod is made to be in open PHC piles hole
On the center line of diameter, and the second steel disc is set to be tightly attached to PHC piles by mantle fiber seamless steel pipe in adjusting
On inner wall.
Compared with prior art, the present invention open PHC piles can not only bear pressure but also
Buoyancy force of underground water can be resisted, resistance to compression and anti-floating is made to be integrated in one, to reduce the working procedure for individually doing anti-float anchor rod, nothing
It needs the large scale equipments such as jumbolter to march into the arena, and then can shorten the construction period, and open PHC piles belong to pre-
Stake (assembling type base) processed, it is easy for construction, pressure can be born but also bear pulling force caused by anti-floating, optimize the stress of stake
Characteristic, and then improve the mechanical property of pile body；On this basis, by the ruler of original open PHC piles
Very little (including stake diameter, stake long) can advanced optimize, and to reach saving material, reduce energy consumption, save the purpose of project cost,
Simple in structure, installation is fast and convenient, and operability is strong, energy conservation and environmental protection, and economic benefit and social benefit are notable, reduces and individually does
The working procedure of anti-float anchor rod, shortens the duration, reduces cost, and can obtain higher, more reliable withdrawal resistance.
Description of the drawings:
Fig. 1 is the main body of open prestressed high strength coagulation pile pile of the present invention anti-floating system integrated with anti-float anchor rod
Principle schematic diagram.
Fig. 2 is the schematic diagram of centering holder of the present invention
Fig. 3 is the relative position figure of trapezoidal steel disc of the present invention, the seamless steel pipe of interior mantle fiber, ribbed stiffener steel disc.
Fig. 4 is the A-A sectional views of Fig. 3 of the present invention.
Fig. 5 is the principle schematic diagram of enlarged footing of the present invention.
Fig. 6 is the vertical view of enlarged footing of the present invention.
Fig. 7 is the vertical view of hold-down support of the present invention.
Fig. 8 is the B-B sectional views of hold-down support described in Fig. 7 of the present invention.
Fig. 9 is the relative position figure of inverted L-shaped reinforcing bar 7 of the present invention and circular steel plate 8.
Figure 10 is the C-C sectional views of Fig. 9
Figure 11 is the principle schematic diagram of inverted L-shaped reinforcing bar 7 of the present invention.
Specific implementation mode：
The present invention is described in further details by way of example and in conjunction with the accompanying drawings.
Embodiment：
The main body knot of open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod described in the present embodiment
Structure includes GFRP anti-float anchor rod bodies of rod locator 1, hold-down support 2, centering holder 3, the GFRP anti-float anchor rods body of rod 4, open answers in advance
Power high-strength concrete pipe pile 5, enlarged footing 6, inverted L-shaped reinforcing bar 7, circular steel plate 8, bed course 9, sole plate 10；GFRP anti-floating anchors
One end of club shaft locator 1 is bound on the GFRP anti-float anchor rods body of rod 4, other end binding doughnut-shaped steel plate in hold-down support 2
At the reserving hole of 2-2, prevent the GFRP anti-float anchor rods body of rod 4 of centering from sliding downwards, it is ensured that anchorage length meets design and wants
It asks；Hold-down support 2 is mounted on smooth ground, to ensure its stability；Centering holder 3 is mounted on the GFRP anti-float anchor rod bodies of rod
It is connect on 4 and with open PHC piles 5, it is ensured that it is high that the GFRP anti-float anchor rods body of rod 4 is in open prestressing force
On the center line in 5 aperture of strength concrete pile pile；The GFRP anti-float anchor rods body of rod 4 is that full thread glass fiber reinforced polymer is solid
Anchor pole, anchorage length are determined with diameter according to anchor force；The material of enlarged footing 6 be glass fiber reinforced polymer material (with
The material identical of the GFRP anti-float anchor rods body of rod 4), circular hole is reserved at center, is formed with screw thread on the inner wall of aperture, the size in aperture according to
4 diameter of the GFRP anti-float anchor rods body of rod determines that the outer profile diameter of enlarged footing 6 is 5 times of reserved Circularhole diameter, and enlarged footing 6 is with spiral shell
The mode of line coupling is mounted on the outer surface on 4 top of the GFRP anti-float anchor rods body of rod and is cast in sole plate 10,6 He of enlarged footing
It is 2 that mass ratio is marked at the screw thread couple of the GFRP anti-float anchor rods body of rod 4:1 epoxy resin and EP type curing agent mixed liquors, a side
Face is used to increase the forced area of anchored end, and diffusion-induced stress improves the effect of anchor force, on the other hand can realize the mesh of sealing
's；Inverted L-shaped reinforcing bar 7 is made of the plain bar of diameter 8mm, and length is determined according to anchorage length；The thickness of circular steel plate 8
For 4mm, diameter is slightly less than the internal diameter of PHC piles 5, and it is high that circular steel plate 8 is just put into open prestressing force
Inside strength concrete pile pile 5；Inverted L-shaped reinforcing bar 7 is welded with circular steel plate 8, and is uniformly distributed in circular steel with 120 ° of angle
The edge of plate 8 avoids injecting anchorage mortar in the 5 long range of entire stake of open PHC piles, only by
Anchorage mortar is injected within the scope of the anchorage depth that anchor force determines, is achieved the purpose that save material, is reduced cost；Bed course 9 is by C15
Microlith element mixed mud is made, and bed course 9 is laid on the ground, and top surface smoothes out, its surfacing is made to be convenient in assembling reinforcement above,
Also function to the effect of protection sole plate 10；Sole plate 10 is made of armored concrete, according to construction drawing and《Building lot base
Plinth design specification》The requirement of (GB50007-2011) is constructed and is arranged on bed course 9, and the GFRP anti-float anchor rods body of rod 4 anchors into
Length in sole plate 10 is determined by anchor force.
GFRP anti-float anchor rods body of rod locator 1 described in the present embodiment is made of iron wire, specification 18#, a diameter of 1.6mm,
Its length is determined according to the anchorage length of anti-float anchor rod.
Hold-down support 2 described in the present embodiment is welded by seamless steel pipe 2-1 and doughnut-shaped steel plate 2-2, seamless steel pipe 2-1's
Height is adjusted by the height that open PHC piles 5 basset, and is higher by prestressed high strength concrete pipe
5 stake top upper surface at least 10cm of stake, diameter is bigger 10cm than 5 diameters of PHC piles, doughnut-shaped steel plate 2-2's
Width is 8cm, reserves symmetrical hole on doughnut-shaped steel plate 2-2, the size of hole makes GFRP anti-float anchor rod bodies of rod locator 1 wear
It crosses, for fixing GFRP anti-float anchor rod bodies of rod locator 1, to prevent the GFRP anti-float anchor rods body of rod 4 from sliding up and down.
Centering holder 3 described in the present embodiment by bolt 3-1, nut 3-2, steel valve 3-3, the first steel disc 3-4, steel sleeve 3-5,
Second steel disc 3-6, trapezoidal steel disc 3-7, silk stick 3-8, the seamless steel pipe 3-9 of interior mantle fiber, ribbed stiffener steel disc 3-10 compositions, wherein steel
Valve 3-3 is made of seamless steel pipe by 90 ° of even partitions, and diameter is determined according to the diameter of the GFRP anti-float anchor rods body of rod 4, steel valve
The first steel disc 3-4 is welded at the both ends of 3-3, and in the position of form center reserving hole of the first steel disc 3-4, and hole is sized so that
Bolt 3-1 is passed through, together with adjacent steel valve 3-3 is of coupled connections by bolt 3-1 with nut 3-2, by tighten bolt 3-1 and
Nut 3-2 improves the bond stress of the steel valve 3-3 and GFRP anti-float anchor rod body of rod 4；The Axisymmetric Distributed Line upper edge steel valve 3- of each steel valve 3-3
Steel sleeve 3-5 is welded in 3 outer surfaces, and steel sleeve 3-5 is made of seamless steel pipe, thickness 2mm, a diameter of 2.5cm, length according to
The internal diameter of open PHC piles 5 determines, and ensures that length of the stick 3-8 in steel sleeve 3-5 is in steel
Twice of the outer length of casing 3-5, so that it is determined that the length of wire vent stick 3-8, silk stick 3-8 is the solid iron staff of diameter 2cm, and surface
It is threaded, the length of side of the second steel disc 3-6 is 5cm, and one end of thickness 2mm, silk stick 3-8 are mounted in steel sleeve 3-5, another
End is welded in the centre of form of the second steel disc 3-6, the stress surface for increasing 5 inner wall of open PHC piles
Product improves overall stability, and the diameter of interior mantle fiber seamless steel pipe 3-9 is determined according to the diameter of silk stick 3-8, interior mantle fiber seamless steel pipe
3-9 is connect with silk stick 3-8 by way of screw thread couple, the length of 3cm, and trapezoidal steel disc 3-7 height is 5cm, and thickness is
2mm, trapezoidal steel disc 3-7 are welded on the outer wall of interior mantle fiber seamless steel pipe 3-9, in interior mantle fiber seamless steel pipe 3-9 and trapezoidal steel disc 3-7
Between weld ribbed stiffener steel disc 3-10, ribbed stiffener steel disc 3-10 shapes are triangle, and thickness 2mm, the length of side of two right-angle sides is equal
For 3cm, the strength and stability for enhancing trapezoidal steel disc 3-7 and interior mantle fiber seamless steel pipe 3-9, tune when installing centering holder 3
The interior mantle fiber seamless steel pipe 3-9 on silk stick 3-8 is saved, the GFRP anti-float anchor rods body of rod 4 is made to be in open prestressed high strength concrete
On the center line in 5 aperture of pile pile, and the second steel disc 3-6 is set to be tightly attached to prestressed high-strength by mantle fiber seamless steel pipe 3-9 in adjusting
It spends on the inner wall of concrete tubular pile 5.
The present embodiment realizes that the detailed process of open prestressed high strength coagulation pile pile anti-floating integrated with anti-float anchor rod is：
(1) it first squeezes into or static pressure opening PHC piles 5, by open prestressed high strength concrete pipe
The inner wall cleaning of stake 5 is smooth, clean, and stake week ground is flattened；
(2) by three inverted L-shaped reinforcing bars 7 with 120 ° of angle uniform welding to the edge of circular steel plate 8, and installed
To 5 top surface of open PHC piles, it is ensured that the bottom end of the GFRP anti-float anchor rods body of rod 4 is in circular steel plate 8
The distance on surface is no less than 50cm；
(3) seamless steel pipe 2-1 and doughnut-shaped steel plate 2-2 are welded together into composition hold-down support 2, and in doughnut-shaped steel plate 2-2
Upper symmetrical reserving hole, hole size can guarantee across iron wire；Then hold-down support 2 is installed, and ensure hold-down support 2
The lower end 5cm that buries keep it firm；
(4) reserving hole at the centre of form of the first steel disc 3-4, hole size ensure that bolt 3-1 is passed through；And by first
Steel disc 3-4 is welded to the both ends of steel valve 3-3, then welds rigid casing 3-5 on the arc bisector of each steel valve 3-3, direction to
Outside, and by screw bolt and nut by four steel valve 3-3 it is of coupled connections together；
(5) silk stick 3-8 is closely welded at the centre of form of the second steel disc 3-6, is ensured on silk stick 3-8 and the second steel disc 3-6
Surface is vertical；
(6) trapezoidal steel disc 3-7 is close-coupled to the outer wall of interior mantle fiber seamless steel pipe 3-9 in a welding manner, ensures ladder
The shape upper surfaces steel disc 3-7 are vertical with interior mantle fiber seamless steel pipe 3-9, and between interior mantle fiber seamless steel pipe 3-9 and trapezoidal steel disc 3-7
Weld ribbed stiffener steel disc 3-10；
(7) steel valve 3-3 is fixed on the GFRP anti-float anchor rods body of rod 4, by tightening bolt 3-1 and nut 3-2 to improve
The bond stress of the steel valve 3-3 and GFRP anti-float anchor rod body of rod 4, and two sets of steel valves are installed according to anchorage length, wherein two sets of steel valves it
Between spacing according to the anchorage length of the GFRP anti-float anchor rods body of rod 4 determine, then in the GFRP anti-floatings in two sets of steel valve centre positions
Two iron wires are bound on anchor rod body 4, and ensure to tighten and cannot slide；
(8) interior mantle fiber seamless steel pipe 3-9 and silk stick 3-8 are linked together by screw thread couple, and is answered in advance according to opening
The inner diameter size of power high-strength concrete pipe pile 5 adjusts interior mantle fiber seamless steel pipe 3-9, it is ensured that mantle fiber seamless steel pipe 3-9 in adjusting
The length ratio of top and bottom silk stick 3-8 be 2:1；
(9) silk stick 3-8 is inserted into steel sleeve 3-5, by adjusting the interior mantle fiber seamless steel pipe 3-9 on silk stick 3-8, is made
The GFRP anti-float anchor rod bodies of rod are located on the central axes of 5 internal diameter of open PHC piles, and ensure the second steel disc
3-6 is tightly attached on 5 inner wall of open PHC piles, and the final fixed GFRP anti-float anchor rods body of rod is answered in advance in opening
Length in power high-strength concrete pipe pile 5 is anchorage length design value, and ensures lower end and the circle of the GFRP anti-float anchor rods body of rod 4
Protective layer thickness between shape steel plate 8 is not less than 20cm；
(10) two iron wires on the GFRP anti-float anchor rods body of rod 4 are fixed on two reserving holes of hold-down support, and
Ensure that every iron wire will be tightened, be tensed, avoids 4 slide downward of the GFRP anti-float anchor rods body of rod；
(11) upper end of the GFRP anti-float anchor rods body of rod 4 is sealed and (when preventing from pouring mortar, splashes mortar) with plastic film,
It pours mortar and is flushed with 5 stake top face of open PHC piles；
(12) it is cut along top of concrete with snips after conserving 24 hours, and the GFRP anti-float anchor rods body of rod 4 is pushed up
The plastic film in portion is dismantled, and installs enlarged footing 6, and be tightened on the GFRP anti-float anchor rods body of rod 4, ensures the GFRP anti-float anchor rod bodies of rod
4 with enlarged footing upper surface flush；After installing, by the requirement construction cushion coat 9 and sole plate 10 of construction drawing and related specifications.
Claims (4)
1. a kind of opening prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod, it is characterised in that agent structure
Including GFRP anti-float anchor rod bodies of rod locator, hold-down support, centering holder, the GFRP anti-float anchor rods body of rod, open prestressed high-strength
Spend concrete tubular pile, enlarged footing, inverted L-shaped reinforcing bar, circular steel plate, bed course, sole plate；GFRP anti-float anchor rod body of rod locators
One end is bound on the GFRP anti-float anchor rod bodies of rod, and other end binding at the reserving hole of doughnut-shaped steel plate, prevents in hold-down support
The GFRP anti-float anchor rod bodies of rod of centering slide downwards, it is ensured that anchorage length meets design requirement；Hold-down support is mounted on smooth
Ground on, to ensure its stability；Centering holder be mounted on the GFRP anti-float anchor rod bodies of rod on and with open prestressed high strength
Concrete tubular pile connects, it is ensured that the GFRP anti-float anchor rod bodies of rod are in the center line in open PHC piles aperture
On；The GFRP anti-float anchor rod bodies of rod are the solid anchor pole of full thread glass fiber reinforced polymer, and anchorage length is with diameter according to anchor
Gu power determines；The material of enlarged footing is glass fiber reinforced polymer material, and center reserves circular hole, spiral shell is formed on the inner wall of aperture
The size of line, aperture determines that the outer profile diameter of enlarged footing is the 5 of reserved Circularhole diameter according to GFRP anti-float anchor rod shank diameters
Times, enlarged footing mounted on the outer surface on GFRP anti-float anchor rod bodies of rod top and is cast in sole plate in a manner of screw thread couple
Interior, it is 2 that mass ratio is marked at the screw thread couple of enlarged footing and the GFRP anti-float anchor rod bodies of rod:1 epoxy resin and EP type curing agent
On the one hand mixed liquor is used to increase the forced area of anchored end, diffusion-induced stress improves the effect of anchor force, on the other hand can be real
The purpose of existing sealing；Inverted L-shaped reinforcing bar is made of the plain bar of diameter 8mm, and length is determined according to anchorage length；Circular steel
The thickness of plate is 4mm, and diameter is less than the internal diameter of PHC piles, and circular steel plate is just put into opening and answers in advance
Inside power high-strength concrete pipe pile；Inverted L-shaped reinforcing bar is welded with circular steel plate, and is uniformly distributed in circular steel with 120 ° of angle
The edge of plate avoids injecting anchorage mortar in the long range of the entire stake of open PHC piles, only by anchor
Gu injecting anchorage mortar within the scope of the anchorage depth that power determines, achievees the purpose that save material, reduces cost；Bed course is thin by C15
Stone element mixed mud is made, and on the ground, top surface smoothes out setting cushion, its surfacing is made to be convenient in assembling reinforcement above,
Play the role of protecting sole plate；Sole plate is made of armored concrete, according to construction drawing and《Building foundation designs
Specification》The requirement of (GB50007-2011) is constructed and is arranged on bed course, and the GFRP anti-float anchor rod bodies of rod anchor into sole plate
In length determined by anchor force.
2. open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod according to claim 1, special
Sign is that the GFRP anti-float anchor rods body of rod locator is made of iron wire, and specification 18#, a diameter of 1.6mm, length is according to anti-
The anchorage length of drogue bar determines.
3. open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod according to claim 1, special
Sign is that the hold-down support is welded by seamless steel pipe and doughnut-shaped steel plate, and the height of seamless steel pipe is by open prestressed high-strength
The height that degree concrete tubular pile bassets is adjusted, and is higher by PHC piles stake top upper surface at least 10cm,
Its diameter is bigger 10cm than PHC piles stake diameter, and the width of doughnut-shaped steel plate is 8cm, is reserved on doughnut-shaped steel plate pair
The size of the hole of title, hole makes GFRP anti-float anchor rod body of rod locators pass through, fixed for fixing the GFRP anti-float anchor rod bodies of rod
Position device, to prevent the GFRP anti-float anchor rod bodies of rod from sliding up and down.
4. open prestressed high strength coagulation pile pile anti-floating system integrated with anti-float anchor rod according to claim 1, special
Sign is the centering holder by bolt, nut, steel valve, the first steel disc, steel sleeve, the second steel disc, trapezoidal steel disc, silk stick, interior
Seamless steel pipe, the ribbed stiffener steel disc composition of mantle fiber, wherein steel valve is made of seamless steel pipe by 90 ° of even partitions, diameter root
It is determined according to the diameter of the GFRP anti-float anchor rod bodies of rod, the first steel disc is welded at the both ends of steel valve, and in the position of form center of the first steel disc
Reserving hole, hole are sized so that bolt passes through, and adjacent steel valve is of coupled connections together by screw bolt and nut, is passed through
Tighten the bond stress that screw bolt and nut improves steel valve and the GFRP anti-float anchor rod bodies of rod；Outside the Axisymmetric Distributed Line upper edge steel valve of each steel valve
Surface soldered steel sleeve, steel sleeve are made of seamless steel pipe, thickness 2mm, a diameter of 2.5cm, and length is answered in advance according to opening
The internal diameter of power high-strength concrete pipe pile determines, and ensures that length of the stick in steel sleeve is two of the length outside steel sleeve
Times, so that it is determined that the length of wire vent stick, silk stick is the solid iron staff of diameter 2cm, and surface is threaded, the length of side of the second steel disc
One end for 5cm, thickness 2mm, silk stick is mounted in steel sleeve, and the other end is welded in the centre of form of the second steel disc, for increasing
The forced area of big open end PHC piles inner wall, improve overall stability, interior mantle fiber seamless steel pipe it is straight
Diameter determines that interior mantle fiber seamless steel pipe is connect with silk stick by way of screw thread couple, the length of 3cm according to the diameter of silk stick,
Trapezoidal steel disc height is 5cm, and thickness 2mm, trapezoidal steel disc is welded on the outer wall of interior mantle fiber seamless steel pipe, in interior mantle fiber seamless steel
Ribbed stiffener steel disc is welded between pipe and trapezoidal steel disc, ribbed stiffener steel disc shape is triangle, thickness 2mm, the side of two right-angle sides
Length is 3cm, the strength and stability for enhancing trapezoidal steel disc and interior mantle fiber seamless steel pipe, and silk is adjusted when installing centering holder
Interior mantle fiber seamless steel pipe on stick makes the GFRP anti-float anchor rod bodies of rod be in open PHC piles aperture
On heart line, and the second steel disc is set to be tightly attached to the inner walls of PHC piles by mantle fiber seamless steel pipe in adjusting
On.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524694.7A CN108677945B (en) | 2018-05-28 | 2018-05-28 | Integrated anti-floating device of open prestressed high-strength concrete pipe pile and anti-floating anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810524694.7A CN108677945B (en) | 2018-05-28 | 2018-05-28 | Integrated anti-floating device of open prestressed high-strength concrete pipe pile and anti-floating anchor rod |
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| CN108677945A true CN108677945A (en) | 2018-10-19 |
| CN108677945B CN108677945B (en) | 2020-05-12 |
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| CN201810524694.7A Active CN108677945B (en) | 2018-05-28 | 2018-05-28 | Integrated anti-floating device of open prestressed high-strength concrete pipe pile and anti-floating anchor rod |
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| CN113585361A (en) * | 2021-09-06 | 2021-11-02 | 青岛理工大学 | Horizontal sliding support, anti-floating anchor rod and construction method |
| CN114032862A (en) * | 2021-11-03 | 2022-02-11 | 中铁二局集团建筑有限公司 | Water surface garbage collecting device for utilizing water flow traction force |
| CN114991223A (en) * | 2022-06-28 | 2022-09-02 | 青岛理工大学 | Waterproof uplift pile and construction method |
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| CN108677945B (en) | 2020-05-12 |
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