CN203066063U - Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile - Google Patents
Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile Download PDFInfo
- Publication number
- CN203066063U CN203066063U CN 201320051362 CN201320051362U CN203066063U CN 203066063 U CN203066063 U CN 203066063U CN 201320051362 CN201320051362 CN 201320051362 CN 201320051362 U CN201320051362 U CN 201320051362U CN 203066063 U CN203066063 U CN 203066063U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pile
- concrete
- plastic bushing
- inboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile. The plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile is characterized by mainly comprising an outer side plastic sleeve, an inner side steel tube, a precast waterproof pile tip, a concrete filling pile body and a cast-in-situ pile top closing end; and the precast waterproof pile tip is arranged at the bottom of the hollow pipe pile, and an outer side immersed tube connecting groove, a plastic sleeve connecting groove and an inner side steel tube connecting groove are circularly formed in the top surface of the cast-in-situ pile concrete hollow pipe pile and used for limiting the positions of an outer side immersed tube, the plastic sleeve and the inner side steel tube. The pile body is isolated from the outside environment through the outer side plastic sleeve, the precast waterproof pile tip and the cast-in-situ pile top closing end, therefore, the problem about corrosion of concrete and steel tubes is solved, and meanwhile, as the steel tubes are preset in the pile body, the bearing capacity of the pile body can be greatly promoted.
Description
Technical field
The utility model belongs to the foundation engineering field, be particularly related to a kind of plastic bushing and steel pipe combination cast-in-situ concrete pile tube, both can solve concrete, pipe corrosion problem simultaneously, also can significantly promote the supporting capacity of pile body, be applicable to hydrogeological conditions poor, to the demanding soft clay area foundation treatment engineering of foundation capability.
Background technology
Composite foundation reinforcing method originates from the sixties in 20th century, owing to can significantly improve the bearing capacity of ground, reduces foundation settlement, and effectively suppresses these characteristics of foundation soil body lateral deformation and become a kind of more satisfactory Soft Ground mode.Yet because composite foundation buries in underground more, its material of body of a pile all can face underground water and foundation soil to concrete etching problem, in the coastal area, this phenomenon of saline and alkaline area is more obvious; Simultaneously, under dry wet alternating environment, concrete surface is subject to the saline crystallization corrosion, and especially sulphate corrosion has a strong impact on concrete durability.Existing numerous cases show both at home and abroad, and a lot of concrete structures all successively disease and deterioration occur under the influence of external environment, and various hidden danger, defective or damages in various degree occurred, cause its safety, applicability, durability progressively to reduce.
Pile tube is to use comparatively general a kind for the treatment of process of composite foundation, comprise pile for prestressed pipe and non-prestressed pile tube, what wherein be most widely used is prestressed concrete pipe pile, advantages such as it has the bearing capacity of single pile height, scope of design is wide, pile quality is reliable, saving constructional materials.But because the pile body sectional area of pile tube is less, the ability that opposing lateral deformation and external environment corrode is relatively poor.Steel pipe pile means that by seamless steel pipe or through the made steel pipe of electric arc electric welding (containing helically-seamed pipe) have advantages such as supporting capacity height, good integrity, easy construction, but its cost is higher, corrosion problems also is the subject matter that influences the pile body life-span.
Steel tube concrete pile is to establish steel pipe in the outside of concrete pile, by the inner concrete of outside steel tube confinement, make concrete be in three-dimensional stress state, improve greatly with the intensity of improving pile body, plasticity and toughness, be mainly used in building super highrise building in the very thick area of weak soil covering layer, and build and stride water bridge, harbour etc. in the demanding civil engineering of pile strength.But because the steel pipe of steel tube concrete pile directly is exposed in the external environment, its corrosion problems is a difficult point problem that needs solution in the engineering construction process always.
In addition, for improving concrete durability, engineering circle often adopts the good cement of corrosion resistance such as slag cements, trass cement, pulverized fuel ash cement etc., though the cement of these kinds has the advantage that improves concrete durability, its price is much higher than Portland cement; Concrete admixtures is for improving and regulate a kind of material of concrete performance admixture, add Admixture in right amount and have certain effect to improving concrete performance tool, but its price is higher, being difficult to large tracts of land and using.
Have the novel pile body structure of establishing plastic bushing in the pile body outside at present, as plastic sleeve concrete pile, formed by prefabricated water proof stake point, screw plastic casing, concrete, pile cover (cover plate) etc., under suitable engineering background and geological conditions, also obtained relative good engineering effect, but pile body is solid pile, and pile body diameter is less, and supporting capacity is lower, and the ability of opposing lateral deformation is relatively poor.
In sum, ground water is very big to the durability influence of material of body of a pile, and the cost of anticorrosion concrete is higher, and the plastic sleeve concrete pile supporting capacity is lower, and the opposing transversal deformability is relatively poor.Given this, for the mode diversification more that makes Soft Ground, satisfy the requirement that the Soft Ground mode is selected under the complicated hydrogeological environment, better solve concrete endurance issues, further improve the mechanical property of pile body, need a kind of anticorrosion, durable, cast-in-place concrete hollow pile tube that supporting capacity is high of invention at present badly, to satisfy Base Consolidation Engineering, especially improve concrete durability under special area such as coastal area, saline and alkaline area, the particular surroundings, improve the ground stabilization effect of requirement.
Summary of the invention
The purpose of this utility model is by being used in combination inboard steel pipe and outside plastic bushing, a kind of plastic bushing and steel pipe combination cast-in-place concrete hollow pile tube is provided, in the corrosion problems that solves concrete, steel pipe simultaneously, improve the Its ultimate bearing capacity of pile body, improved the stress performance of pile body.
In order to realize above-mentioned technical purpose, the utility model has adopted following technical scheme:
A kind of plastic bushing and steel pipe combination cast-in-place concrete hollow pile tube is characterized in that, described hollow shell pill mainly by outside plastic bushing, inboard steel pipe, prefabricated water proof stake point, concrete fill pile body, present walling pile closedtop closed end is formed; Prefabricated water proof stake point is located at the bottom of hollow shell pill, and its end face is respectively applied to limit the position of outside immersed tube, plastic bushing and inboard steel pipe along being arranged circumferentially outside immersed tube link slot, plastic bushing link slot and inboard steel pipe link slot.
Establish the plastic bushing topping in the outside of cast-in-place concrete hollow pile tube, can longitudinally pile body and external environment be isolated, solved the problem of existing steel tube concrete pile corrosion-vulnerable, improved steel pipe and concrete durability; And steel pipe is established in the inboard, helps to improve the intensity of pile body and the ability of opposing lateral deformation, improves the stress performance of pile body.The three road grooves that prefabricated water proof stake point arranges can be firmly fixing with the position of outside immersed tube, plastic bushing and inboard steel pipe respectively, add the totally-enclosed effect of present walling pile closedtop closed end, can isolate from two ends with pile body and external environment, prevent that further concrete, steel pipe from being corroded.
Described prefabricated water proof stake point is provided with inboard steel pipe tube connector, and inboard steel pipe tube connector is fixedlyed connected with inboard steel pipe by welding.Prefabricated water proof stake point can be connected more fixing, difficult loosening with inboard steel pipe by inboard steel pipe tube connector.
For anti-sealing infiltrates from prefabricated water proof stake point and the junction of pile body, in plastic bushing link slot and inboard steel pipe link slot, waterstop is installed.
Present walling pile closedtop closed end adopts anticorrosion concrete to build, evenly lay vertical reinforcement and transverse reinforcement in the junction of filling pile body with the bottom concrete along annular, can adopt between this vertical reinforcement and the transverse reinforcement and be welded to connect or colligation is connected, to strengthen the effect of fixedlying connected between present walling pile closedtop closed end and the pile body, further strengthen the supporting capacity of pile body.
Inboard outer wall of steel pipe is welded with the floor of putting more energy into, and the floor of putting more energy into is laterally uniformly-spaced evenly laid ringwise.
Outside plastic bushing is preferably made with PVC, PE, HDPE or the PP material of good corrosion resistance, and plastic bushing can longitudinally be isolated pile body concrete, inboard steel pipe and external environment.
Inboard steel pipe and outside immersed tube all can adopt the major diameter steel pipes with straight, and the welded top of inboard steel pipe has the support ring of being convenient to lift by crane, and outside immersed tube is made up of in two semicircle separate type steel pipes of plastic bushing slightly larger in diameter.
The job practices of plastic bushing of the present utility model and steel pipe combination cast-in-place concrete hollow pile tube, main construction sequence comprises:
After step 3, the plastic bushing that will connect with prefabricated water proof stake point and inboard steel pipe are sling, with its armful jail, and longitudinally take auxiliary closure measures with outside immersed tube; The bottom of outside immersed tube is connected with the outside immersed tube link slot of prefabricated water proof stake point;
Pull out outside immersed tube in step 5, the vibration, plastic bushing and inboard steel pipe are stayed ground inside;
Step 6, under conduit cooperates, to surrounding concrete perfusion in the annular space that forms by outside plastic bushing and inboard steel pipe, and adopt small-sized vibrating spear to vibrate;
Step 7, install template according to the dimensional requirement of present walling pile closedtop closed end at the top that concrete fills pile body, and settle the vertical joint bar of stake closedtop closed end and a stake closedtop closed end transverse reinforcement, build present walling pile closedtop closed end with anticorrosion concrete subsequently.
The utlity model has following characteristics and beneficial effect:
(1) the prefabricated water proof stake point of plastic bushing, pile body bottom is established in the pile body outside, and present walling pile closedtop closed end can be isolated pile body and external environment from 3 directions, improve the durability of pile body, solved steel pipe, concrete corrosion problems to a certain extent.
(2) plastic bushing in the pile body outside and the inboard steel pipe template that can doublely do pile body concreting can improve concrete pouring quality, saves construction costs.
(3) establish steel pipe in the pile body inboard, and be aided with the transversal reinforcement floor, help significantly to promote the intensity of pile body and the ability of opposing lateral deformation.
(4) adopt the tubular pile body, can take full advantage of the mechanical property of loop configuration.
The utility model is isolated pile body and external environment by outside plastic bushing, prefabricated water proof stake point and three directions of built-in top seal end, overcome the etching problem of concrete, steel pipe, simultaneously by in the pile body inboard steel pipe being set, intensity and the Its ultimate bearing capacity of pile body have been improved, improve the stress performance of pile body, had economical and practical advantage.
Description of drawings
Fig. 1 is the sectional drawing of plastic bushing and steel pipe combination cast-in-place concrete hollow tube pile structure;
Fig. 2 is Fig. 1 does not cut open the reinforcement floor along the pile body of A-A line sectional view;
Fig. 3 is that Fig. 1 is along the sectional view of the built-in blind end in pile body top of B-B line;
Fig. 4 is Fig. 1 cuts open the reinforcement floor along the pile body of C-C line sectional view;
Fig. 5 is that Fig. 1 is along the stake ogival sectional view of D-D line;
Fig. 6 is plastic bushing and steel pipe combination cast-in-place concrete hollow tube pile construction artwork.
Among the figure: 1-plastic bushing; 2-concrete fills pile body; 3-transversal reinforcement floor; 4-inboard steel pipe; 5-prefabricated water proof stake point; 6-present walling pile closedtop closed end; The vertical joint bar of 7-stake closedtop closed end; 8-stake closedtop closed end transverse reinforcement; 9-inboard steel pipe tube connector; 10-outside immersed tube link slot; 11-plastic bushing link slot; 12-outside immersed tube; 13-inboard steel pipe link slot; 14-waterstop; 15-soft layer; 16-bearing stratum.
Specific embodiment
Welding procedure technical requirements between immersed tube and tube connector, floor, the design and construction requirement of corrosion resistant concrete, pile body concrete construction technology requirements etc. are not repeated in the present embodiment, and emphasis is set forth the embodiment that the utility model relates to structure.
Fig. 1 is the sectional drawing of plastic bushing and steel pipe combination cast-in-place concrete hollow tube pile structure, Fig. 2 is Fig. 1 does not cut open the reinforcement floor along the pile body of A-A line sectional view, Fig. 3 is that Fig. 1 is along the sectional view of the built-in blind end in pile body top of B-B line, to be Fig. 1 cut open the sectional view of reinforcement floor along the pile body of C-C line to Fig. 4, and Fig. 5 is that Fig. 1 is along the stake ogival sectional view of D-D line.As plastic bushing and the steel pipe combination cast-in-place concrete hollow pile tube of Fig. 1-shown in Figure 5, fill pile body 2, inboard steel pipe 4, prefabricated water proof stake point 5, present walling pile closedtop closed end 6 by plastic bushing 1, concrete and form.
The external diameter of outside plastic bushing 1 is 800mm, selects the pvc pipe of wall thickness 10mm for use, bears pressure greater than 1.5MPa, should have excellent acidproof, alkaline-resisting, corrosion resistance, and parameters should satisfy the requirement of existing related specifications.
The external diameter of inboard steel pipe 4 is 600mm, adopts seamless steel pipe.The strength grade of steel is Q345, thickness 10mm, and dimensions satisfies the requirement of the existing related specifications of standard.On the outer wall of steel pipe, establish one group of transverse stiffener plate 3 every 500mm, the long 50mm of floor, wide 20mm, thick 20mm, strength grade are Q235; The floor 3 of putting more energy into is equidistantly laid ringwise.
The external diameter of outside immersed tube 12 is 850mm, is made up of two semicircle separate type steel pipes, and the strength grade of steel is Q345, and thickness is 20mm, and the steel pipe sizes specification satisfies the requirement of the existing current specifications of standard.
The diameter of present walling pile closedtop closed end 6 is 1000mm, is "T"-shaped, and wherein the height at the pile body Outboard Sections is 250mm, is 350mm at the height of pile body inside part, adopts corrosion resistant concreting, and strength grade of concrete is C30; Between present walling pile closedtop closed end 6 and the bottom pile body concrete along annular evenly lay 15 long be the vertical joint bar 7 of stake closedtop closed end of 500mm, the concrete degree of depth of vertical joint bar 7 insertion pile bodies is 300mm; Simultaneously, in present walling pile closedtop closed end 6, along laterally establishing 2 layers of annular stake closedtop closed end transverse reinforcement 8,3 every layer, be welded to connect with vertical joint bar 7; The vertical joint bar 7 of stake closedtop closed end and stake closedtop closed end transverse reinforcement 8 all adopt the indented bars of HRB335, and bar diameter is 16mm.
Prefabricated water proof stake point 5 is located at the bottom of hollow shell pill, adopts corrosion resistant concrete prefabricated, and strength grade of concrete is C40, and the angle of prefabricated water proof stake point 5 bottom surfaces and vertical direction is 45 °; Be embedded into the inboard steel pipe tube connector 9 that external diameter is 650mm at prefabricated water proof stake point 5, length of embedment is 150mm, exposes highly to be 100mm.
The end face of prefabricated water proof stake point 5 is along being arranged circumferentially 3 dark 30mm, the connection groove of wide 25mm, immersed tube link slot 10, plastic bushing link slot 11 and inboard steel pipe link slot 13 namely, the position that is respectively applied to limit inboard steel pipe 4, plastic bushing 1, outside immersed tube 12; Waterstop 14 is laid in each groove in advance, and size is identical with groove size, and physical property satisfies the requirement of standard current specifications.
The work progress of plastic bushing and steel pipe combination cast-in-place concrete hollow tube pile structure comprises as shown in Figure 6:
After step 3, the plastic bushing 1 that will connect with prefabricated water proof stake point 5 and inboard steel pipe 4 are sling by default support ring, outside immersed tube 12 closures of separate type with its armful jail, and are longitudinally established the colligation cable wire one every 2m; The bottom of outside immersed tube 12 is connected with the outside immersed tube link slot 10 at prefabricated water proof stake point 5 tops.
Pull out outside immersed tube 12 in step 5, the vibration.
Step 6, under conduit cooperates, to surrounding concrete perfusion in the annular space that forms by outside plastic bushing 1 and inboard steel pipe 4, and adopt small-sized vibrating spear to vibrate, form concrete pile body 2.
Step 7, install template according to the dimensional requirement of present walling pile closedtop closed end 6 at the top that concrete fills pile body 2, and settle the vertical joint bar 7 of stake closedtop closed end and a stake closedtop closed end transverse reinforcement 8, build present walling pile closedtop closed end 6 with anticorrosion concrete subsequently.
Claims (7)
1. a plastic bushing and steel pipe combination cast-in-place concrete hollow pile tube is characterized in that, described hollow shell pill mainly by outside plastic bushing, inboard steel pipe, prefabricated water proof stake point, concrete fill pile body, present walling pile closedtop closed end is formed; Prefabricated water proof stake point is located at the bottom of hollow shell pill, and its end face is respectively applied to limit the position of outside immersed tube, plastic bushing and inboard steel pipe along being arranged circumferentially outside immersed tube link slot, plastic bushing link slot and inboard steel pipe link slot.
2. hollow shell pill according to claim 1 is characterized in that, described prefabricated water proof stake point is provided with inboard steel pipe tube connector, and inboard steel pipe tube connector is fixedlyed connected with inboard steel pipe by welding.
3. hollow shell pill according to claim 1 is characterized in that, in described plastic bushing link slot and the inboard steel pipe link slot waterstop is installed.
4. hollow shell pill according to claim 1, it is characterized in that, described present walling pile closedtop closed end adopts anticorrosion concrete to build, evenly lay vertical reinforcement and transverse reinforcement in the junction of filling pile body with the bottom concrete along annular, can adopt between this vertical reinforcement and the transverse reinforcement to be welded to connect or colligation is connected.
5. hollow shell pill according to claim 1 is characterized in that, described inboard outer wall of steel pipe is welded with the floor of putting more energy into, and the floor annular of putting more energy into is uniformly-spaced evenly laid.
6. hollow shell pill according to claim 1 is characterized in that, outside plastic bushing is made by PVC, PE, HDPE or the PP material of corrosion resistance.
7. hollow shell pill according to claim 1, it is characterized in that, inboard steel pipe and outside immersed tube adopt the major diameter steel pipes with straight, and the welded top of inboard steel pipe has the support ring of being convenient to lift by crane, and outside immersed tube is made up of in two semicircle separate type steel pipes of plastic bushing slightly larger in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051362 CN203066063U (en) | 2013-01-29 | 2013-01-29 | Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051362 CN203066063U (en) | 2013-01-29 | 2013-01-29 | Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203066063U true CN203066063U (en) | 2013-07-17 |
Family
ID=48764874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320051362 Expired - Fee Related CN203066063U (en) | 2013-01-29 | 2013-01-29 | Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203066063U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074890A (en) * | 2013-01-29 | 2013-05-01 | 浙江华光市政建设有限公司 | Plastic sleeve and steel pipe combined cast-in-place concrete hollow pipe pile and construction method thereof |
| CN103485333A (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Corrugated hollow steel pipe friction pile and construction method thereof |
| CN113062313A (en) * | 2021-03-15 | 2021-07-02 | 湖北工业大学 | Prefabricated pile tip suitable for high water level area and construction method thereof |
-
2013
- 2013-01-29 CN CN 201320051362 patent/CN203066063U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074890A (en) * | 2013-01-29 | 2013-05-01 | 浙江华光市政建设有限公司 | Plastic sleeve and steel pipe combined cast-in-place concrete hollow pipe pile and construction method thereof |
| CN103485333A (en) * | 2013-07-18 | 2014-01-01 | 杭州博数土木工程技术有限公司 | Corrugated hollow steel pipe friction pile and construction method thereof |
| CN103485333B (en) * | 2013-07-18 | 2016-02-24 | 浙江中隧桥波形钢腹板有限公司 | Waveform hollow steel pipe friction pile and construction method |
| CN113062313A (en) * | 2021-03-15 | 2021-07-02 | 湖北工业大学 | Prefabricated pile tip suitable for high water level area and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103074890B (en) | Plastic sleeve and steel pipe combined cast-in-place concrete hollow pipe pile and construction method thereof | |
| CN108086994B (en) | One kind passing through unfavourable geological tunnel set bridge underground structure and construction method | |
| CN204753844U (en) | Circular steel tube concrete column sleeve connected node | |
| CN103898900B (en) | Band pull bar steel tube-concrete composite structure diaphragm wall and construction method thereof | |
| CN209837018U (en) | Prefabricated prestressed anchor rod construction structure | |
| CN105386443A (en) | FRP pipe and thick-wall steel pipe compounding hollow recycled concrete pile | |
| CN103485334B (en) | Bi-layer plastic-bushing inverted-arch cambered hollow special-shaped pile and construction method | |
| CN201538975U (en) | Seepage-proofing joint of underground continuous wall | |
| CN101575859B (en) | Anti-seepage joint of underground continuous walls and construction method thereof | |
| CN105200983A (en) | PVC pipe and thick wall steel tube composite hollow recycled concrete pile | |
| CN102011410A (en) | Prefabricated prestressed underground continuous wall and construction method thereof | |
| CN110485430A (en) | A kind of interlocking pile combines foundation pit supporting method with ground-connecting-wall | |
| CN208844417U (en) | A kind of outer precast construction for pier column and its outer prefabricated interior cast-in-place pier column | |
| CN203066063U (en) | Plastic sleeve and steel tube combined cast-in-situ concrete hollow pipe pile | |
| CN103924581B (en) | Prefabricated concrete-filled steel tube combining structure diaphragm wall and construction method thereof | |
| CN104074197B (en) | The construction method of large diameter thin wall cylinder stake compound anchor rod-type foundation pit enclosure structure | |
| CN103953036A (en) | Construction method of anticorrosion protective sleeve for pipe connection of offshore saline soil electric transmission line pile foundation | |
| CN208763204U (en) | A kind of vertical connecting structure of low layer assembled architecture prefabricated panel | |
| CN206693271U (en) | A kind of prefabricated pipe gallery steel plate concrete attachment structure | |
| CN206308707U (en) | A kind of city integrated Pipe rack of prefabricated assembled concrete | |
| CN209837117U (en) | Connecting structure of assembled structural member | |
| CN102518129B (en) | Post pressure-grouting pre-stressed hollow square pile and manufacturing method thereof | |
| CN209686244U (en) | Box girder tensioning end seal anchor structure | |
| CN206189456U (en) | Three cabin piping lanes | |
| CN109881662A (en) | Major diameter high-performance UHPC- steel pipe composite pile base and its construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20220129 |