CN108221963A - A kind of quincunx concrete tubular pile - Google Patents
A kind of quincunx concrete tubular pile Download PDFInfo
- Publication number
- CN108221963A CN108221963A CN201810095261.4A CN201810095261A CN108221963A CN 108221963 A CN108221963 A CN 108221963A CN 201810095261 A CN201810095261 A CN 201810095261A CN 108221963 A CN108221963 A CN 108221963A
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- pile
- stake
- pile body
- welded
- vertical bars
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- 230000002787 reinforcement Effects 0.000 claims abstract description 27
- 210000003205 muscle Anatomy 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 17
- 238000010276 construction Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 238000005056 compaction Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 241000282693 Cercopithecidae Species 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000012552 review Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims 1
- 230000003111 delayed effect Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 235000008429 bread Nutrition 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
Abstract
The present invention provides a kind of quincunx concrete tubular pile,Including pile body and the metallic plate for being welded in pile body upper and lower ends,Pile body includes steel reinforcement cage and fills the concrete of steel reinforcement cage,The cross section of pile body includes hollow inner circle and quincuncial profile,Profile is by N number of convex arc and N number of concave arc is spaced forms,The adjacent streamlined connection of convex arc and concave arc,Steel reinforcement cage includes N to main reinforcement and N number of reinforced mesh,Further include several stirrups,Each pair of main reinforcement is located on the line of symmetry of corresponding concave arc,Each reinforced mesh is located on the line of symmetry of corresponding convex arc,Several stirrups are setting up and down and are mutually parallel,Each stirrup is welded to each other fixation with N to main reinforcement and N number of reinforced mesh,Each reinforced mesh includes two vertical bars and between two vertical bars for several short muscle of two vertical bars of connection,Two vertical bars be located on the line of symmetry of convex arc and be mutually parallel with main reinforcement and the concrete together with main reinforcement along the vertical direction on the pile body and welded with metallic plate,N is the natural number more than 3.
Description
Technical field
The present invention relates to technical field of buildings more particularly to a kind of quincunx concrete tubular pile and its construction methods.
Background technology
With the fast development of the engineerings such as building, traffic and ocean basis, pile foundation engineering is widely used in engineering practice
In.Since the application of pile foundation engineering is more and more, more and more scholars begin one's study how to improve pile foundation bearing capacity, how
Adequately utilize the material of pile body.It is found by investigation, in the method for improving pile foundation performance, increases that stake is long or stake diameter can be with
Improve Bearing Behavior of Pile, but only improve the bearing capacity of pile foundation by increase pile shaft material, this way it is not only uneconomical but also
Increase difficulty of construction, therefore seek realization high-bearing capacity, low cost, the stability of unit materials utilization rate height and ground can be bright
Increased Novel pile foundation is shown, becomes one of hot and difficult issue problem of geotechnical engineering circle extensive concern, pile pile is nearest relatively stream
Capable novel pile-type has the characteristics of bearing capacity of pile foundation is high, and stock utilization is big, is transported in many engineering practices
With receiving great acclaim.
According to theory of pile foundation it is found that pile pile lateral area is related with the perimeter size of pile body cross section, and the bearing capacity of pile pile
It is related with stake surrounding soil and pile body side contact area, in the case where other conditions are all identical, stake surrounding soil and pile body
Side contact area is bigger, and the bearing capacity of pile pile is higher.By investigation, currently on the market the outer cross master of concrete tubular pile
To be round, rectangular or other blunt form sections, the specific surface area of round pile pile is relatively small, and stock utilization is relatively
It is low, the performance of pile pile material is not given full play to, although the pile pile cross section specific surface area of rectangular pile pile or other blunt forms
Relatively large, but stress concentration is easily generated in the corner of their cross sections, when use, long-term stress concentration easily contracted
The service life of short tubular piles.Therefore, in order to improve the service life that the bearing capacity of pile foundation extends pile foundation again, seek one kind not
But it large specific surface area and is particularly important for fairshaped pile pile cross section.
Invention content
In view of this, the embodiment provides a kind of bearing capacity is strong, service life is long, the plum of large specific surface area
Flower-shape concrete tubular pile and its construction method.
The embodiment of the present invention provides a kind of quincunx concrete tubular pile, including pile body and is welded in two above and below the pile body
The metallic plate at end, the pile body is hollow, the concrete including steel reinforcement cage and the filling steel reinforcement cage, the transversal bread of the pile body
Include hollow inner circle and quincuncial profile, the profile is by N number of convex arc and N concave arc is spaced forms, and adjacent is described
Convex arc and the streamlined connection of the concave arc, the steel reinforcement cage include with N number of one-to-one N of concave arc to main reinforcement and with it is N number of
The convex arc N number of reinforced mesh correspondingly, further includes several stirrups, and each pair of main ribs are located at corresponding described recessed
On the line of symmetry of arc, each reinforced mesh is located on the line of symmetry of the corresponding convex arc, on several stirrups
Lower to set and be mutually parallel, each stirrup is welded to each other fixation with N to main ribs and N number of reinforced mesh, each
The reinforced mesh includes two vertical bars and between two vertical bars for connecting several short muscle of two vertical bars,
Two vertical bars be located on the line of symmetry of the convex arc and be mutually parallel with main ribs and together with main ribs vertically
Direction is run through the concrete on the pile body and is welded with two metallic plates, and N is the natural number more than 3.
Further, the arbitrary two short muscle are mutually parallel, and the short muscle is welded to each other admittedly with the corresponding vertical bars
It is fixed.
Further, on any cross section of the pile body tool there are one it is big divide equally circle and it is one small to divide circle equally, it is and N number of
The tangent circle of the convex arc is circumscribed circle, is inscribed circle with the tangent circle of N number of concave arc, described to divide round radius equally greatly
Equal to the half of the sum of the radius of the circumscribed circle and the inscribed circle, it is described it is small divide equally round radius equal to the inscribed circle with
The half of the sum of the radius of the inner circle, projection of the stirrup on the cross section with it is described it is small divide equally it is round overlap, it is each pair of
Main ribs include two main reinforcements, and two main reinforcement is welded in inside and outside the stirrup and is respectively positioned on corresponding described
On the line of symmetry of concave arc, the vertical bars in the reinforced mesh be located at the line of symmetry of the convex arc with it is described divide equally greatly it is round
Point of intersection, another vertical bars are located at the line of symmetry and small divide round point of intersection equally with described and welded with the outside of the stirrup.
Further, the radius of the inscribed circle is equal to the half of the sum of the circumscribed circle and the radius of the inner circle.
Further, the geomery of each metallic plate is consistent with the geomery of pile body cross section, the metal
Plate is equipped with the vertical bars hole that N passes through the cage bar holes passed through for N to main ribs and the 2N confession vertical bars, main ribs and institute
Vertical bars are stated with the outside of the corresponding metallic plate by being welded to connect.
Further, the pile tip with closed opening below the pile body is further included, the pile tip with closed opening includes top and head,
The top is annulus cylindricality, is stretched into the cavity of the pile body across the corresponding metallic plate, and the head is cone
Shape is used for soil compaction positioned at the lower end at the top.
Further, N number of reinforcing rib, N number of equiangularly spaced diverging distribution of reinforcing rib are equipped on the downside of the head.
Further, further include the opening pile toe below the pile body, the opening pile toe include surrounding part and
Soil compaction part, the enclosure subpackage cover the edge of the corresponding metallic plate and connect the metallic plate and the pile body,
The soil compaction part is 2N steel plate, respectively on the line of symmetry of the outside concave arc being welded in the encirclement part and convex arc.
The embodiment of the present invention also provides a kind of construction method of above-mentioned quincunx concrete tubular pile, including walking as follows
Suddenly：
Step 1：Surveying setting-out：The control point for setting control stake and bench mark in piling construction areas adjacent is no less than 2,
Not influenced by piling for principle, axial line control stake is arranged on away from 5~10m of exterior wall stake for its position, with control pile foundation axis and
Absolute altitude；
Step 2：Measuring stake position：Building axis and corner pile are set according to control point, by piling plan measuring stake position, and
Label is performed in stake position center reinforcing bar or bamboo stick, stake deviations are controlled within 20mm；
Step 3：Soldier piles and pitching pile：Secondary review is carried out to stake position with method of direct coordinate according to the control point set, just
The first section stake of decentralization after really, the central point of head section stake pile tops and the deviation of stake position are controlled within 20mm；
Step 4：Degree control：After pile top is into underground layer 500mm, vertical position is in theodolite adjustment stake machine pile frame
It puts, then adjusts the verticality of first section stake again, make pile frame and pile body keeping parallelism, trueness error is less than long 1% of stake, you can
Piling, and tracking and monitoring is carried out during piling, commander's pile frame keeps its precision；
Step 5：Piling：Stake is mounted in pile frame two with the slide guide fixture or pile ring of pile frame to lead in note, in perpendicular alignmnet stake
The heart is slowly put down in insertion soil, can be pressed in hammer in stake, while should be in stake together with pile cover behind position and verticality correction
Side or frame on scale is set, and is made a record, begin to hit stake, such as pile crown not usually, leveled up or used with gunnysack or millboard
Epoxy resin mortar mend smooth out it is whole, when starting piling from hammer light pressure or tap number hammer into shape, observation pile body, pile frame, pile monkey it is vertical it is consistent after, i.e.,
Normal injection can be transferred to, when starting piling, is fallen away from smaller, enters ground certain depth after stake stabilization, then falling away from progress on demand
Injection；
Step 6：Pile extension：Using welding；It is kept on the same axis, after connection with the pile section being connected after pile cutoff is in place
Pile body keeps vertical, and pile pile is spliced into whole stake and is welded to connect using end plate, and pile crown embedded iron parts must remove dirty rust before welding, dew
Go out metallic luster, if gap is excessive between pile section, can parallels plate tamp and weld, the gap between composition surface is not more than 2mm, welding
When, quadrangle spot welding should be fixed, then symmetrical welding is to reduce welding deformation simultaneously, and level weld seam requirement is continuously full, throat depth
It must satisfy design requirement；
Step 7：Pile follower：It takes pile follower bar during pile follower, during pile follower bar pile follower, pile follower depth is calculated according to design requirement,
And marked on pile follower bar, when pile follower to designed elevation, send out signal and stop pile follower.
Step 8：Check it is errorless after, mobile piling machine completes quincunx class concrete pipe pile construction to new stake position.
The advantageous effect brought of technical solution that the embodiment of the present invention provides is：Quincunx concrete of the present invention
Pile pile and its construction method, the main ribs being set on the concave arc line of symmetry and the institute being set on the convex arc line of symmetry
Reinforced mesh is stated, can not only be improved used in the shearing resistance of stake, but also the compressive property and tensile property of the concrete can be improved；It is described
The distribution of the vertical bars and the short muscle in reinforced mesh can effectively improve the anti-bending strength of stake；Adjacent is described convex
Arc and the streamlined connection of the concave arc, avoid wedge angle, and connect streamlined, can effectively prevent stress concentration, avoid because
Harmful effect caused by stress concentration.
Description of the drawings
Fig. 1 is the schematic diagram of the cross section of the quincunx concrete tubular pile of the present invention；
Fig. 2 is the schematic diagram of the reinforced mesh of the quincunx concrete tubular pile of the present invention；
Fig. 3 is the structure schematic diagram of the cross section of the reinforced mesh of the quincunx concrete tubular pile of the present invention；
Fig. 4 is the schematic diagram of the metallic plate of the reinforced mesh of the quincunx concrete tubular pile of the present invention；
Figure (a) in Fig. 5, figure (b), figure (c) be respectively the pile tip with closed opening vertical view of the embodiment of the present invention one, side view and
Bottom view；
It is the schematic diagram of the opening pile toe of the embodiment of the present invention two in Fig. 6；
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
It please refers to Fig.1, the embodiment provides quincunx concrete tubular piles, mainly include pile body and are welded in institute
State the metallic plate 5 of pile body upper and lower ends.
It please refers to Fig.1 and Fig. 3, in order to improve the specific surface area of the pile body, the pile body is hollow, including steel reinforcement cage and fills out
The concrete of the steel reinforcement cage is filled, the cross section 4 of the pile body includes hollow inner circle 43 and quincuncial profile, specifically,
The profile is by N number of convex arc 46 and N number of concave arc 47 is spaced forms, and N is the natural number more than 3, in order to prevent stress collection
In, the 47 streamlined connection of the adjacent convex arc 46 and the concave arc.Be equal to 4, N in the present invention with N is equal to 6 equal to 5 and N
Example, situations of the N more than 6 are referred to the situation that N is 4 or 5 or 6.
Please refer to Fig.1 to Fig. 3, the steel reinforcement cage include with N number of 47 one-to-one N of concave arc to main reinforcement 1 and with it is N number of
The one-to-one N number of reinforced mesh 2 of the convex arc 46, further includes several hoops parallel each other set in the up-down direction
Muscle 3, each reinforced mesh 2 include two vertical bars 21 and are erected between two vertical bars 21 for connecting described two
Several short muscle 22 of muscle 21, two vertical bars 21 are located on the line of symmetry of the convex arc 46 and are mutually parallel with main ribs 1
And with the main ribs 1 together concrete along the vertical direction on the pile body and welded with two metallic plates 5.Tool
Body, on any cross section 4 of the pile body tool there are one it is big divide equally circle 44 and it is one small divide circle 45 equally, it is and N number of described convex
The tangent circle of arc 46 is circumscribed circle 41, be inscribed circle 42 with the tangent circle of N number of concave arc 47, the big circle 44 of dividing equally
Radius is equal to the half of the sum of the radius of the circumscribed circle 41 and the inscribed circle 42, and the small radius for dividing circle 45 equally is equal to institute
State the half of the sum of the radius of inscribed circle 42 and the inner circle 43, projection of the stirrup 3 on the cross section 4 with it is described small
Divide circle 45 equally to overlap, each pair of main ribs 1 include two main reinforcements 1, and two main reinforcement 1 is welded in inside and outside the stirrup 3
And be respectively positioned on the line of symmetry of the corresponding concave arc 47, the vertical bars 21 of one in the reinforced mesh 2 are located at described
The line of symmetry of convex arc 46 and the big point of intersection for dividing circle 44 equally, another vertical bars 21 are located at the line of symmetry and small are put down with described
It the point of intersection of cyclotomy 45 and is welded with the outside of the stirrup 3.The arbitrary two short muscle 22 is mutually parallel, and the short muscle 22 with
The corresponding vertical bars 21 are by being welded and fixed, distribution, the short muscle 22 corresponding with the distribution of the stirrup 3 of the short muscle 22
Identical height is in, and positioned at the distribution of the stirrup 3 close to the region of the pile body end with the corresponding stirrup 3
Density is more than the distribution density of the stirrup 3 positioned at the pile body intermediate region, positioned at close to the region of the pile body end
The short muscle 22 distribution density be more than positioned at the pile body intermediate region the short muscle 22 distribution density.
It please refers to Fig.1 and Fig. 4, the radius of the inscribed circle 42 is equal to the circumscribed circle 41 and the radius of the inner circle 43
The sum of half, so as to make the convex arc 46 and the concave arc 47 that there is identical radian and curvature, so that the pile body each point
Uniform force.Two metallic plates 5 are respectively positioned at the bottom metal of the pile body bottom end and and positioned at the pile body top
Top metal plate, the geomery of each metallic plate 5 is consistent with the geomery of pile body cross section 4, the metallic plate 5
It is equipped with the vertical bars hole 51 that N passes through the cage bar holes 52 passed through for N to main ribs 1 and the 2N confession vertical bars 21, the master
Muscle 1 and the vertical bars 21 are with the outside of the corresponding metallic plate 5 by being welded to connect.
When making quincunx concrete tubular pile of the present invention, by the steel reinforcement cage bound and bottom metal weld with
Afterwards, it is erected and it is vertically put into the mold mating with the pile body size, it is then vertical mix
Solidifying soil pours.The welding position of the top metal plate is reserved when pouring, concrete stirring is carried out when pouring by the coagulation
Soil stirs evenly, and the concrete is waited to reach form removal after requirement.The top metal plate is positioned over to the top of the pile body after form removal,
Make main ribs 1 and the vertical bars 21 across the corresponding main ribs hole 52 on the top metal plate and the vertical bars hole
51, then the main ribs 1 for stretching out the top metal plate and the vertical bars 21 are welded in the outside of the top metal plate.
Pile top finally is installed under the bottom metal.
Embodiment one
Fig. 5 is please referred to, the pile top is pile tip with closed opening 6, and the pile tip with closed opening 6 includes top 61 and head 62, such as Fig. 5
In figure (a) and figure (b) shown in, the top 61 be annulus cylindricality, across the corresponding (bottom of metallic plate 5
Metallic plate) it stretches into the cavity of the pile body, play the role of connecting the cavity of the metallic plate 5 and the pile body, make described
Metallic plate 5 and contacting for the pile body are even closer.The head 62 is taper, is used to squeeze positioned at the lower end at the top 61
Soil.As shown in the figure (c) in Fig. 5,62 downside of the head is equipped with N number of reinforcing rib 63, N number of reinforcing rib 63 with it is N number of described
Convex arc 46 is arranged in a one-to-one correspondence, and N number of equiangularly spaced diverging distribution of reinforcing rib 63, vertex is intersected.
Embodiment two
Fig. 6 is please referred to, the pile top is opening pile toe 7, and the opening pile toe 7 includes surrounding part 71 and soil compaction part
72, the encirclement part 71 coats the edge of the corresponding metallic plate 5 (bottom metal) and connects the metal
Plate 5 and the pile body, the soil compaction part 72 are 2N steel plate, outside respectively to be welded on encirclement 71 side of part
On the line of symmetry of concave arc and convex arc.
The construction method of quincunx concrete tubular pile of the present invention, includes the following steps：
Step 1：Surveying setting-out：Control stake and bench mark is set to be no less than 2 in piling construction areas adjacent, position with
It is not influenced by piling for principle (other than distance operation place 40m).Axial line control stake should be arranged on away from 5~10m of exterior wall stake, with
Control pile foundation axis and absolute altitude；
Step 2：Measuring stake position：Building axis and corner pile are set according to control point, by piling plan measuring stake position, and
Label is performed in stake position center reinforcing bar or bamboo stick, should can be constructed after supervisor checks after the measuring of stake position.To prevent stake
Stake machine dead weight extrusion soil makes the bit shift of measuring stake when machine is in place, should check correct, stake before formal piling after stake machine is in place
Deviations are controlled within 20mm；
Step 3：Soldier piles and pitching pile：Secondary review is carried out to stake position with method of direct coordinate according to the control point set, just
The first section stake of decentralization after really, the central point of head section stake pile tops and the deviation of stake position are controlled within 20mm；
Step 4：Degree control：After pile top is into underground layer 500mm, vertical position is in theodolite adjustment stake machine pile frame
It puts, then adjusts the verticality (theodolite is generally erected at away from other than stake machine 15m) of first section stake again, pile frame is made to keep flat with pile body
Row, trueness error are less than 1% long (perpendicularity deviation when head section pile piles are inserted into ground must not exceed 0.5%) of stake, you can
Piling, and tracking and monitoring is carried out during piling, commander's pile frame keeps its precision；
Step 5：Piling：Stake is mounted in pile frame two with the slide guide fixture or pile ring of pile frame to lead in note, in perpendicular alignmnet stake
The heart is slowly put down in insertion soil, can be pressed in hammer in stake, while should be in stake together with pile cover behind position and verticality correction
Side or frame on scale is set.And make a record, it begins to hit stake, such as pile crown not usually, is leveled up with gunnysack or millboard, also may be used
It is whole that first epoxy resin mortar mends floating.The light pressure of hammer or tap number hammer should be played by starting piling, and it is vertical consistent to observe pile body, pile frame, pile monkey etc.
Afterwards, you can be transferred to normal injection, when starting piling, fall away from should be smaller, enter ground certain depth after stake stabilization, then falling on demand
Away from progress injection；
Step 6：Pile extension：Generally use welding；Pile cutoff must be kept on the same axis with the pile section being connected in place,
Pile body keeps vertical after connection.Pile pile is spliced into whole stake and is welded to connect using end plate, and pile crown embedded iron parts must be removed before welding
Dirt rust, exposes metallic luster.If gap is excessive between pile section, can parallels plate tamp and weld, the gap between composition surface is not more than
2mm.During welding, quadrangle spot welding should be fixed, then to reduce welding deformation, level weld seam requirement is continuously full for symmetrical welding simultaneously,
Throat depth must satisfy design requirement；
Step 7：Pile follower：Pile feeder must be taken during pile follower, bolt-type Pile feeder can be used.Pile follower bar in Pile feeder is sent
During stake, pile follower depth should be calculated according to design requirement, and eye-catching label is carried out on pile follower bar.When pile follower is to away from designed elevation
During 1m or so, survey crew commands stake machine operative employee to reduce speed, and tracking observation pile follower situation, until pile follower to designed elevation
When, it sends out signal and stops pile follower.
Step 8：Check it is errorless after, mobile piling machine completes quincunx class concrete pipe pile construction to new stake position.
The advantageous effect brought of technical solution that the embodiment of the present invention provides is：Quincunx concrete of the present invention
Pile pile and its construction method, the main ribs 1 being set on 47 line of symmetry of concave arc and are set to 46 line of symmetry of convex arc
On the reinforced mesh 2, can not only improve used in the shearing resistance of stake, but also the compressive property and pull resistance of the concrete can be improved
Energy；The distribution of the vertical bars 21 and the short muscle 22 in the reinforced mesh 2 can effectively improve the anti-bending strength of stake；
Adjacent 47 streamlined connection of the convex arc 46 and the concave arc avoids wedge angle, and connection is streamlined, can effectively prevent
Only stress concentration avoids harmful effect caused by stress concentration.
Herein, the involved nouns of locality such as forward and backward, upper and lower are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of quincunx concrete tubular pile, it is characterised in that：Including pile body and the metal for being welded in the pile body upper and lower ends
Plate, the pile body is hollow, and the concrete including steel reinforcement cage and the filling steel reinforcement cage, the cross section of the pile body is including hollow
Inner circle and quincuncial profile, the profile is by N number of convex arc and N number of concave arc is spaced forms, the adjacent convex arc and institute
State the streamlined connection of concave arc, the steel reinforcement cage include with N number of one-to-one N of concave arc to main reinforcement and with N number of convex arc
One-to-one N number of reinforced mesh, further includes several stirrups, each pair of main ribs are located at the symmetrical of the corresponding concave arc
On line, each reinforced mesh is located on the line of symmetry of the corresponding convex arc, several stirrups it is setting up and down and
It is mutually parallel, each stirrup is welded to each other fixation, each reinforcing bar with N to main ribs and N number of reinforced mesh
Mesh sheet includes two vertical bars and is used to connect several short muscle of two vertical bars between two vertical bars, described two
Vertical bars are located on the line of symmetry of the convex arc and are mutually parallel with main ribs and run through along the vertical direction together with main ribs
The concrete on the pile body and welded with two metallic plates, N is the natural number more than 3.
2. quincunx concrete tubular pile as described in claim 1, it is characterised in that：The arbitrary two short muscle is mutually parallel, and
The short muscle is welded to each other fixation with the corresponding vertical bars.
3. quincunx concrete tubular pile as described in claim 1, it is characterised in that：Have on any cross section of the pile body
There are one big circles of dividing equally to divide circle equally with one small, is circumscribed circle with the tangent circle of N number of convex arc, equal with N number of concave arc
Tangent circle is inscribed circle, described to divide one of round radius equal to the sum of the radius of the circumscribed circle and the inscribed circle equally greatly
Half, the small half divided round radius equally and be equal to the sum of the inscribed circle and the radius of the inner circle, the stirrup is described
Projection on cross section with it is described it is small divide equally it is round overlap, each pair of main ribs include two main reinforcements, and two main reinforcement is welded in institute
It states inside and outside stirrup and is respectively positioned on the line of symmetry of the corresponding concave arc, one in the reinforced mesh is described perpendicular
Muscle is located at the line of symmetry of the convex arc and divides round point of intersection equally greatly with described, another vertical bars be located at the line of symmetry with it is described small
Divide round point of intersection equally and welded with the outside of the stirrup.
4. quincunx concrete tubular pile as claimed in claim 3, it is characterised in that：The radius of the inscribed circle is equal to described outer
Connect the half of the sum of circle and the radius of the inner circle.
5. quincunx concrete tubular pile as claimed in claim 3, it is characterised in that：The geomery of each metallic plate with
The geomery of pile body cross section is consistent, and the metallic plate is equipped with N and the cage bar holes passed through for N to main ribs and 2N are supplied
The vertical bars hole that the vertical bars pass through, main ribs and the vertical bars are with the outside of the corresponding metallic plate by being welded to connect.
6. quincunx concrete tubular pile as described in claim 1, it is characterised in that：Further include closing below the pile body
Mouth pile top, the pile tip with closed opening include top and head, and the top is annulus cylindricality, across the corresponding metallic plate
It stretches into the cavity of the pile body, the head is taper, and soil compaction is used for positioned at the lower end at the top.
7. quincunx concrete tubular pile as claimed in claim 6, it is characterised in that：N number of reinforcing rib is equipped on the downside of the head,
The equiangularly spaced diverging distribution of N number of reinforcing rib.
8. quincunx concrete tubular pile as described in claim 1, it is characterised in that：Further include opening below the pile body
Mouth pile top, the opening pile toe include surrounding part and soil compaction part, and the corresponding metal is covered in the enclosure subpackage
The edge of plate simultaneously connects the metallic plate and the pile body, and the soil compaction part is 2N steel plate, respectively it is outside be welded on described in
It surrounds on the line of symmetry of the concave arc in part and convex arc.
9. a kind of construction method of quincunx concrete tubular pile as described in claim 1-8, it is characterised in that：Including as follows
Step：
Step 1：Surveying setting-out：The control point for setting control stake and bench mark in piling construction areas adjacent is no less than 2, position
It puts not influenced by piling for principle, axial line control stake is arranged on away from 5~10m of exterior wall stake, to control pile foundation axis and absolute altitude；
Step 2：Measuring stake position：Building axis and corner pile are set according to control point, by piling plan measuring stake position, and in stake
Position center reinforcing bar or bamboo stick perform label, and stake deviations are controlled within 20mm；
Step 3：Soldier piles and pitching pile：Secondary review is carried out to stake position with method of direct coordinate according to the control point set, after correct
The first section stake of decentralization, the central point of head section stake pile tops and the deviation of stake position are controlled within 20mm；
Step 4：Degree control：It is in vertical position with theodolite adjustment stake machine pile frame after pile top is into underground layer 500mm,
Then the verticality of first section stake is adjusted again, makes pile frame and pile body keeping parallelism, and trueness error is less than long 1% of stake, you can pressure
Stake, and tracking and monitoring is carried out during piling, commander's pile frame keeps its precision；
Step 5：Piling：Stake is mounted in pile frame two with the slide guide fixture or pile ring of pile frame to lead in note, perpendicular alignmnet pile center, be delayed
It is slow to put down in insertion soil, hammer can be pressed in stake, while should be in the side of stake together with pile cover behind position and verticality correction
Scale on face or frame is set, and is made a record, begins to hit stake, such as pile crown not usually, levels up or use epoxy with gunnysack or millboard
Mortar mending smooth out it is whole, when starting piling from hammer light pressure or tap number hammer into shape, observation pile body, pile frame, pile monkey it is vertical it is consistent after, you can turn
Enter normal injection, when starting piling, fall away from smaller, enter ground certain depth after stake stabilization, then falling away from carrying out injection on demand；
Step 6：Pile extension：Using welding；It is kept on the same axis with the pile section being connected after pile cutoff is in place, pile body after connection
Keep vertical, pile pile is spliced into whole stake and is welded to connect using end plate, and pile crown embedded iron parts must remove dirty rust before welding, exposes gold
Belong to gloss, if gap is excessive between pile section, can parallels plate tamp and weld, the gap between composition surface is not more than 2mm, during welding,
Quadrangle spot welding should be fixed, then symmetrical welding is to reduce welding deformation simultaneously, and level weld seam requirement is continuously full, and throat depth is necessary
Meet design requirement；
Step 7：Pile follower：It takes pile follower bar during pile follower, during pile follower bar pile follower, pile follower depth is calculated according to design requirement, and
It is marked on pile follower bar, when pile follower to designed elevation, sends out signal and stop pile follower.
Step 8：Check it is errorless after, mobile piling machine completes quincunx class concrete pipe pile construction to new stake position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095261.4A CN108221963A (en) | 2018-01-31 | 2018-01-31 | A kind of quincunx concrete tubular pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095261.4A CN108221963A (en) | 2018-01-31 | 2018-01-31 | A kind of quincunx concrete tubular pile |
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| CN108221963A true CN108221963A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810095261.4A Pending CN108221963A (en) | 2018-01-31 | 2018-01-31 | A kind of quincunx concrete tubular pile |
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| CN (1) | CN108221963A (en) |
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| CN111456003A (en) * | 2020-04-23 | 2020-07-28 | 唐镜宸 | Energy-concerving and environment-protective building room is built and is used high accuracy pile driver |
| CN111877308A (en) * | 2020-06-16 | 2020-11-03 | 中交第三公路工程局有限公司 | Hydraulic hammering type prestressed concrete pipe pile construction method for soft soil foundation |
| CN113047329A (en) * | 2021-05-17 | 2021-06-29 | 国网福建省电力有限公司泉州供电公司 | Plum-blossom-shaped pile foundation anchor rod composite foundation structure and construction method thereof |
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