CN205975582U - Improve device of hollow pile bearing capacity - Google Patents
Improve device of hollow pile bearing capacity Download PDFInfo
- Publication number
- CN205975582U CN205975582U CN201620912664.XU CN201620912664U CN205975582U CN 205975582 U CN205975582 U CN 205975582U CN 201620912664 U CN201620912664 U CN 201620912664U CN 205975582 U CN205975582 U CN 205975582U
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- China
- Prior art keywords
- slip casting
- drilling rod
- hollow pile
- slurry
- bearing capacity
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- 238000007569 slipcasting Methods 0.000 claims abstract description 68
- 238000005553 drilling Methods 0.000 claims abstract description 44
- 238000007582 slurry-cast process Methods 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 210000002784 stomach Anatomy 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of the geotechnical engineering construction and specifically relates to an improve device of hollow pile bearing capacity, its characterized in that: the device includes grouting pump, slip casting pipe, slip casting drilling rod and slip casting ware at least, wherein the injected hole has been seted up on the slip casting ware, the slip casting ware with the one end of slip casting drilling rod is connected fixed and inside intercommunication and constitutes the slip casting passageway, the other end of slip casting drilling rod passes through slip casting pipe with the grouting pump is connected, the external thick liquid pond of grouting pump. The utility model has the advantages that: a remedy that improves the hollow pile bearing capacity both can have been regarded as, the conventional technology of slip casting behind the hollow pile can be regarded as again, the construction is simple and convenient, the practicality is strong, improve resource utilization.
Description
Technical field
This utility model is related to geotechnical engineering construction field, especially a kind of device improving hollow pile bearing capacity.
Background technology
Hollow pile includes precast hollow square pile, precast hollow pile tube, steel pipe etc., it have high capacity, with short production cycle,
The advantages of save material.The advanced science of its production technology and maturation, have a wide range of applications in construction market.Real in engineering
In trampling, because the reasons such as the selection of exploration report parameter is unreasonable, supporting course big rise and fall, pile for prestressed pipe soil compaction effect lead to work
Journey pile bearing capacity is not enough.Separately due to stratum reason, particularly soft clay area, the bearing capacity that single pile provides is limited, for top lotus
Carrying larger building needs to arrange substantial amounts of stake to meet requirement for bearing capacity, and now bearing capacity of pile foundation is much smaller than the strong of pile body
Degree, causes the wasting of resources.
Improving the current main technique of bearing capacity of pile foundation is pile-end post-grouting, and this technique is exactly utilizing works stake bottom and side
The Grouting Pipe of pre-plugged, is becoming（Heavy）Carry out high-pressure slip-casting with high-pressure pump in some skies after stake, serosity passes through to penetrate into, cleaves,
Filling, the effect such as compacted are combined with pile body surrounding soil, play raising bearing capacity, minimizing settles and other effects.Post Grouting Technique exists
With existing more ripe technology in cast-in-situ bored pile, but hollow pile is made with post jacking and processes it is common practice that built-in slip casting pipe,
Not only use less at present, and have as a drawback that：1st, slurry casting machine and stake end almost in same absolute altitude it is impossible in stake end absolute altitude
Following slip casting is it is impossible to effectively improve the bearing capacity of hollow pile.2nd, pre-buried Grouting Pipe is easily blocked by the soil body in pile driving process,
And be difficult to remedy.3rd, during merogenesis construction pile foundation, the connection of Grouting Pipe is extremely difficult.
Content of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art, there is provided a kind of hollow pile bearing capacity of raising
Device, pierces below hollow pile end after pile sinking, carries out slip casting to hollow pile end, thus improving the bearing capacity of hollow pile.
This utility model purpose is realized being completed by technical scheme below：
A kind of improve hollow pile bearing capacity device it is characterised in that：Described device at least include grouting pump, Grouting Pipe,
Slip casting drilling rod and slurry casting machine, wherein said slurry casting machine offers injected hole, one end of described slurry casting machine and described slip casting drilling rod
It is connected to a fixed and internal connection constitutes slip casting passage, the other end of described slip casting drilling rod is by described Grouting Pipe and described slip casting
Pump is connected, the external slurry pool of described grouting pump.
Described slurry casting machine is a metal tube, and the front end of described metal tube is drill bit, and end is non-return valve, described metal tube
End is connected to a fixed with described slip casting drilling rod, and the external stability of described metal tube is provided with screw blade, described injected hole
It is opened on the described metal tube between described blade.
Described injected hole is blocked by occluding body.
Described slip casting drilling rod is spliced by some section seamless steel pipes, constitutes detachable company between described seamless steel pipe
Connect to fix or constitute and be welded to connect fixation；Detachable being connected is constituted between described slip casting drilling rod and described slurry casting machine.
The utility model has the advantages that：Can not only be used for a kind of remedial measure improving hollow pile bearing capacity, but also as one
Plant the common process of hollow pile grouting behind shaft or drift lining；Easy construction, practical, raising resource utilization.
Brief description
Fig. 1 is the structural representation of slurry casting machine in this utility model；
Fig. 2 is the structural representation of single-unit slip casting drilling rod in this utility model；
Fig. 3 is operating diagram of the present utility model.
Specific embodiment
This utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing,
Understanding in order to technical staff of the same trade：
As Figure 1-3, in figure labelling 1-13 is expressed as：Round metal tube 1, injected hole 2, screw blade 3, brill
4, non-return valve 5, single-unit slip casting drilling rod 6, joint 7, slurry casting machine 8, hollow pile 9, Grouting Pipe 10, grouting pump 11, slurry pool 12, empty
Heart stake empty stomach occluding body 13.
Embodiment：As shown in figure 1, the slurry casting machine in the present embodiment includes round metal tube 1, drill bit 4 is fixedly installed on circle
The front end of shape metal tube 1, non-return valve 5 is fixedly installed on the rear end of round metal tube 1, and wherein drill bit 4 is tapered, its effect be for
Being easy to slurry casting machine pierces among the soil body at below hollow pile stake bottom, and non-return valve 5 is then to prevent slurry during slip casting
Liquid adverse current.It is fixedly installed screw blade 3 in the periphery of round metal tube 1, screw blade 3 is along the pipe of round metal tube 1
Body is axially evenly arranged, so that round metal tube 1 forms helical form drill bit, is easy to further for slurry casting machine to pierce hollow pile stake bottom
Among the following soil body.Some injected holes 2 are offered on round metal tube 1, serosity injects from the non-return valve 5 on top, from
Extrude in injected hole 2.Some injected holes 2 be evenly arranged between the blade of screw blade 3 and blade it is ensured that slip casting uniform
Property.It is provided with rubber stopper or the sheet rubber as occluding body in injected hole 2（In figure is not shown）, with before slip casting to slip casting
Hole 2 is blocked, it is to avoid during the piercing of slurry casting machine, the soil body is made by the inside that injected hole 2 enters into round metal tube 1
Become the blocking of slip casting passage and injected hole 2.
As shown in Fig. 2 single-unit slip casting drilling rod 6 is respectively arranged with joint 7 at its two ends, two single-unit slip casting drilling rods 6 it
Between can be connected by the adaptation of joint 7 and be integrally formed, thus increasing the length of slip casting drilling rod, the entire length of slip casting drilling rod
It is satisfied with the requirement making slurry casting machine can pierce the following soil body in hollow pile stake bottom.
As shown in figure 3, slurry casting machine 8 is connected to a fixed with by the slip casting drilling rod that some single-unit slip casting drilling rods 6 are spliced to form,
And both pores are connected to form slip casting passage.Slip casting drilling rod is connected with grouting pump 11 by a Grouting Pipe 10, note
Stock pump 11 connects slurry pool 12 by another Grouting Pipe 10；Serosity is stored, serosity passes through grouting pump 11 in slurry pool 12
Drive and be pressed out to sky via in Grouting Pipe 10, slip casting drilling rod to slurry casting machine 8, and the injected hole 2 being opened up from slurry casting machine 8 successively
Among the soil body at heart stake stake bottom.
Device in the present embodiment, when using, has following steps：
The first step：To designed elevation, excavation pit is to cheating bottom for construction hollow pile 9.
Second step：Injected hole 2 on slurry casting machine 8 is used rubber stopper（Piece）After closing, by the single-unit note of slurry casting machine 8 and first section
Slurry drilling rod 6 is connected to a fixed, and installs non-return valve 5 in both junctions.
3rd step：Slurry casting machine 8 is pierced in the empty stomach of hollow pile 9 by the single-unit slip casting drilling rod 6 being saved by head, afterwards in first section
Single-unit slip casting drilling rod 6 rear some single-unit slip casting drilling rods 6 are sequentially connected with by joint 7, and by some single-unit slip casting drilling rods 6
Continue the empty stomach making slurry casting machine 8 pierce hollow pile 9 until slurry casting machine 8 pierces the stake bottom absolute altitude identified below of hollow pile 9.
4th step：Plain concrete is poured as hollow pile empty stomach occluding body 13 in the range of 1-1.5m in hollow pile 9 tip cavity,
The stake end of hollow pile 9 is blocked, plain concrete is used for the cavity of closed hollow stake, prevents serosity excessive to ensure slip casting effect.
5th step：Grouting pump 11 connects slurry pool 12 and single-unit slip casting drilling rod 6 end respectively by slip casting flexible pipe 10；Check
Each node, confirms to carry out slip casting by grouting pump 11 after connection is firm.Serosity enters slip casting by some single-unit slip casting drilling rods 6
Device 8, and the injected hole 2 being opened up from slurry casting machine 8 is pressed out among the soil body at below 9 bottoms of hollow pile, so, serosity
By deeply, splitting, filling, the effect such as compacted be combined with pile peripheral earth, thus improving the bearing capacity of hollow pile 9, also may be used simultaneously
To reduce its sedimentation.
6th step：Stop slip casting, reversely rotating slip casting drilling rod 6 makes itself and note after reaching grouting amount or grouting pressure balance
Slurry device 8 departs from, and reclaims slip casting drilling rod 6.
The present embodiment is in the specific implementation：Can be by both between slurry casting machine 8 and coupled single-unit slip casting drilling rod 6
Joint be threaded and make both coordinate by screw thread to constitute detachable being connected, so, when by slurry casting machine 8
After piercing hollow pile stake bottom depth identified below, single-unit slip casting drilling rod 6 can be driven to reversely rotate, so that itself and slurry casting machine 8 phase
Depart from, realize the recovery of slip casting drilling rod.
In order to improve the intensity of slip casting drilling rod, it is to avoid when using, the junction of two neighboring single-unit slip casting drilling rod 6 occurs
Fracture, can be directly connected by welding formation between single-unit slip casting drilling rod 6 and single-unit slip casting drilling rod 6, thus improving slip casting
The intensity of drilling rod.Single-unit slip casting drilling rod 6 can select seamless steel pipe.
Hollow pile 9 can be prefabricated concrete pipe pile, precast concrete square pile, steel-pipe pile etc., and the present embodiment all can be utilized
In device and its using method improving bearing capacity.
Although above example elaborates to the design of this utility model purpose and embodiment referring to the drawings,
But those skilled in the art will realize that under the precondition limiting scope without departing from claim, still may be used
So that this utility model is made with various modifications and variations, such as：The shape of single-unit slip casting drilling rod 6, size；The type of drive of slip casting,
Layout of each device etc., therefore here does not repeat one by one.
Claims (4)
1. a kind of improve hollow pile bearing capacity device it is characterised in that：Described device at least includes grouting pump, Grouting Pipe, note
Slurry drilling rod and slurry casting machine, wherein said slurry casting machine offers injected hole, one end phase of described slurry casting machine and described slip casting drilling rod
It is connected and internal connection constitutes slip casting passage, the other end of described slip casting drilling rod is by described Grouting Pipe and described grouting pump
It is connected, the external slurry pool of described grouting pump.
2. according to claim 1 a kind of improve hollow pile bearing capacity device it is characterised in that：Described slurry casting machine is one
Metal tube, the front end of described metal tube is drill bit, and end is non-return valve, and the end of described metal tube is connected with described slip casting drilling rod
Connect fixation, the external stability of described metal tube is provided with screw blade, and described injected hole is opened between described blade
Described metal tube on.
3. according to claim 2 a kind of improve hollow pile bearing capacity device it is characterised in that：Described injected hole passes through
Occluding body is blocked.
4. according to claim 1 a kind of improve hollow pile bearing capacity device it is characterised in that：Described slip casting drilling rod by
Some section seamless steel pipes are spliced, and constitute detachable being connected or constitute and be welded to connect admittedly between described seamless steel pipe
Fixed；Detachable being connected is constituted between described slip casting drilling rod and described slurry casting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620912664.XU CN205975582U (en) | 2016-08-22 | 2016-08-22 | Improve device of hollow pile bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620912664.XU CN205975582U (en) | 2016-08-22 | 2016-08-22 | Improve device of hollow pile bearing capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205975582U true CN205975582U (en) | 2017-02-22 |
Family
ID=58033035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620912664.XU Active CN205975582U (en) | 2016-08-22 | 2016-08-22 | Improve device of hollow pile bearing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205975582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120714A (en) * | 2016-08-22 | 2016-11-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of device improving hollow pile bearing capacity and using method thereof |
-
2016
- 2016-08-22 CN CN201620912664.XU patent/CN205975582U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120714A (en) * | 2016-08-22 | 2016-11-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of device improving hollow pile bearing capacity and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200032 18, building 681, Xiao Mu Qiao Road, Xuhui District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Country or region after: China Address before: 200032 18, building 681, Xiao Mu Qiao Road, Xuhui District, Shanghai. Patentee before: SHANGHAI GEOTECHNICAL INVESTIGATIONS & DESIGN INSTITUTE Co.,Ltd. Country or region before: China |