CN206800384U - Steel conduit device for cast-in-situ bored pile - Google Patents
Steel conduit device for cast-in-situ bored pile Download PDFInfo
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- CN206800384U CN206800384U CN201621283890.2U CN201621283890U CN206800384U CN 206800384 U CN206800384 U CN 206800384U CN 201621283890 U CN201621283890 U CN 201621283890U CN 206800384 U CN206800384 U CN 206800384U
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Abstract
The utility model provides a kind of steel conduit device for cast-in-situ bored pile, including steel conduit and the shoe that is connected with the bottom of steel conduit；Wherein, shoe includes screw thread steel bushing and arc flap valve and seal gasket；Wherein, the top of screw thread steel bushing is connected by the bottom of screw thread and steel conduit, and bottom and the arc flap valve of screw thread steel bushing be hinged, and folding is freely in the presence of external and internal pressure for arc flap valve.Using this hair can solve the problem that cast-in-situ bored pile or expanding branch grouting pile due to promote conduit bottom to exceed concrete face and caused by broken pile problem, additionally it is possible to the cement for effectively solving the problems, such as first batch of underwater concrete pouring is washed with water.
Description
Technical field
Cast-in-situ bored pile and expanding branch grouting pile technical field are the utility model is related to, more specifically, is related to one kind
There is the steel conduit device used in broken pile during concrete is irrigated in cast-in-situ bored pile and expanding branch grouting pile.
Background technology
At present, cast-in-situ bored pile and expanding branch grouting pile, architectural engineering, science of bridge building, traffic have been widely used in
The foundation construction such as engineering, hydraulic engineering field.With the underwater concrete pouring of use, generally concrete funnel is coordinated to enter water-filling using steel conduit
Lower concrete construction, but promoted in work progress in catheter procedure, it is desirable to buried depth 2-6 rice of the conduit bottom in concrete, due to applying
The general idea of worker person calculates mistake, causes when promoting conduit, and conduit bottom is extracted into concrete surface or conduit bottom is existed
In the laitance of Underwater Concrete surface layer, so that pile breaking phenomenon occurs in bored concrete pile, or make the quality of bored concrete pile undesirable.
It is therefore necessary to which steel conduit used in above-mentioned cast-in-situ bored pile underwater concrete pouring is further improved, to avoid filling
There is broken pile in work progress in note stake, and the broken pile of appearance is adopted remedial measures in time, and the broken pile being likely to occur is carried out
Processing, is allowed to bearing capacity and the durability for meeting design requirement.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of steel conduit device for cast-in-situ bored pile, with
Underwater cast-in-place pile is solved due to promoting conduit too fast or calculating mistake, conduit bottom is extracted outside concrete face or in laitance, gone out
The problem of existing broken pile.
The utility model provides a kind of steel conduit for cast-in-situ bored pile and filled, including steel conduit and the bottom with steel conduit
The shoe of connection；Wherein, shoe includes screw thread steel bushing and arc flap valve；Wherein, the top of screw thread steel bushing by screw thread with
The bottom connection of steel conduit, bottom and the arc flap valve of screw thread steel bushing are hinged, and arc flap valve is opened in the presence of external and internal pressure
Close freely.
Furthermore it is preferred that structure be in addition to be separately positioned on screw thread steel bushing and steel conduit junction, screw thread steel bushing
With the seal gasket between the hinged place of arc flap valve and arc flap valve.
Furthermore it is preferred that structure be that the top of steel conduit is connected with concrete funnel, and junction between is provided with Lou
Struggle against control valve.
Furthermore it is preferred that structure be that arc flap valve is 5 valves, be annularly arranged in the bottom of screw thread steel bushing.
Furthermore it is preferred that structure be that the top of steel conduit and the position below funnel control valve are provided with exhaust
Valve.
Furthermore it is preferred that structure be that the position of drain tap is provided with air gauge.
Furthermore it is preferred that structure be that drain tap is connected by rubber tube with aspirator vacuum pump.
It was found from technical scheme above, the steel conduit device provided by the utility model for cast-in-situ bored pile can
Solve the problems, such as cast-in-situ bored pile or expanding branch grouting pile due to promote conduit processing concrete face and caused by broken pile, while the device
The cement that can effectively solve the problems, such as first batch of underwater concrete pouring is washed with water, and effectively reduces the depth at stake bottom, improves drilling
The construction quality of bored concrete pile.In addition, the device provided by the utility model, simple in construction, cost is low, and constructing operation letter
It is single, broken pile treatment is avoided, so as to save construction cost, accelerating construction progress.
Brief description of the drawings
By reference to the explanation below in conjunction with accompanying drawing, and with being more fully understood to of the present utility model, this practicality is new
The other purposes and result of type will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the signal that underwater concrete pouring steel conduit extraction concrete face is carried out according to the pile foundation of the utility model one embodiment
Figure；
Fig. 2 be according to the pile foundation of one embodiment of the present utility model by after outside steel conduit whole pulled-out holes in conduit bottom
The schematic diagram of Underwater Concrete is inserted into after installation shoe；
Fig. 3 is to carry out vacuum suction after installing shoe according to the pile foundation steel conduit bottom of one embodiment of the present utility model
Irrigate the schematic diagram of Underwater Concrete again with funnel afterwards.
Reference therein includes：Steel conduit 1, drain tap 2, funnel control valve 3, concrete funnel 4, mud 5, water
Lower concrete 6, laitance 7, shoe 8, aspirator vacuum pump 9, arc flap valve 10, threaded ferrule 11.
Identical label indicates similar or corresponding feature or function in all of the figs.
Embodiment
Further detailed description is done to the utility model with specific embodiment with reference to meeting.
In the following description, only some example embodiments of the present utility model are described by way of explanation,
Undoubtedly, one of ordinary skill in the art will recognize the situation in without departing from spirit and scope of the present utility model
Under, described embodiment can be modified with various different modes.Therefore, accompanying drawing and description are explanation in itself
Property, rather than limitation scope of the claims.In addition, in this manual, identical reference sign identical
Part.
In order to illustrate the structure of the steel conduit device provided by the utility model for cast-in-situ bored pile, Fig. 1 to Fig. 3 divides
Exemplary sign has not been carried out to the structure of the steel conduit device for cast-in-situ bored pile from different perspectives.Specifically, Fig. 1 is shown
Underwater concrete pouring steel conduit is carried out according to the pile foundation of the utility model one embodiment and extracts concrete face；Fig. 2 is shown according to this
The pile foundation of one embodiment of utility model is inserted into water after installing shoe in conduit bottom after outside steel conduit whole pulled-out holes
Lower concrete；Fig. 3 is shown to be taken out according to progress vacuum after the pile foundation steel conduit bottom of one embodiment of the present utility model installation shoe
Underwater Concrete is irrigated again with funnel after gas.
As Fig. 1 to Fig. 3 is jointly shown, the steel conduit device provided by the utility model for cast-in-situ bored pile, including：Steel
Conduit 1 and the shoe 8 being connected with the bottom of steel conduit 1；Wherein, freely, its structure composition is screw thread steel bushing to the folding of shoe 8
11st, arc flap valve 10 and seal gasket；Wherein, the top of screw thread steel bushing 11 is connected by screw thread with the bottom of steel conduit 1, silk
It is be hinged to detain bottom and the arc flap valve 10 of steel bushing 11, also, seal gasket is separately positioned on screw thread steel bushing 11 and steel conduit 1
Junction, the hinged place of screw thread steel bushing 11 and arc flap valve 10, and between arc flap valve 10.
Wherein, the top of steel conduit 1 is connected with concrete funnel 4, and junction between is provided with funnel control valve
3.Drain tap 2 is provided with the top of steel conduit 1 and below funnel control valve 3, drain tap 2 and aspirator vacuum pump will
Air in steel conduit 1 is extracted out so that steel conduit 1 is internally formed vacuum or close to vacuum.Set in the position of drain tap 2
There is air gauge, drain tap 2 is connected by rubber tube with aspirator vacuum pump.Arc flap valve is 5 valves, is annularly arranged in screw thread steel
The bottom of sleeve.In order to ensure connection and arc flap valve of the screw thread steel bushing with arc flap valve in the utility model application process
Folding freely, arc flap valve will set at least to 3 valves, and 6~8 valves are preferable, can also be according to being actually needed making suitable quantity
Valve number.
Specifically, the steel conduit device provided by the utility model for cast-in-situ bored pile, it is exactly in the bottom of steel conduit 1
One special device is installed, freely, referred to as shoe 8, the structure composition of shoe 8 connect the screw thread steel bushing of steel conduit to the folding of present apparatus energy
Cylinder 11, arc flap valve 10, seal gasket, the bottom of screw thread steel bushing 11 and arc flap valve 10 are be hinged, and sealing is set in hinged place
Rubber cushion, seal gasket is also equipped between arc flap valve 10, it is ensured that whole shoe 8 seals waterproof after closure.In first batch of concrete
The shoe 8 for reaching the bottom of steel conduit 1 is to open release concrete freely, and the device also ensures that the cement in first batch of concrete is rushed by water
Wash loss off, can effectively reduce the laitance at a bottom, improve the construction quality of cast-in-situ bored pile.
The utility model also provides a kind of cast-in-situ bored pile processing according to the above-mentioned steel conduit device for cast-in-situ bored pile
The principle of broken pile, the principle of cast-in-situ bored pile processing broken pile of the present utility model are：
S1：Shoe is installed in the bottom of steel conduit, and by the arc flap valve tight closure of shoe；
S2：The steel conduit for being provided with shoe insertion has been irrigated below Underwater Concrete laitance in the concrete of 2-3 rice；
S3：Concrete funnel is installed on the top of steel conduit, and closes funnel control valve；
S4：Concrete is filled in concrete funnel；
S5：Air in steel conduit is evacuated or approached and is vacuum formed negative pressure；
S6：Funnel control valve is opened, the concrete in concrete funnel reaches shoe, and the impulsive force of concrete beats shoe in concrete funnel
Open, the concrete of steel conduit merges with the concrete in stake, until whole pile body concrete pouring finishes, concrete face is higher by stake top 0.5-1 rice.
Wherein, in step s 5, by aspirator vacuum pump and the drain tap on steel conduit top is arranged on by steel conduit
Interior air is completely drawn out so that steel conduit is internally formed vacuum or close to vacuum.
Complex chart 1 is to shown in Fig. 3, by taking certain highway bored pile construction as an example：
The cast-in-situ bored pile is the friction pile of 40 meters of depths, a diameter of 1.8 meters, using (steel) volume of concrete funnel 4 3m3, adopt
With a diameter of 30cm 40 meters long steel conduit 1, the section of steel conduit 1 is with 2 meters, 3 meters, with screwed connection, steel between steel conduit 1
Need before the use of conduit 1 to do anti-school and hydraulic pressure test, steel conduit 1 pass through test passes, carry out first filling Underwater Concrete C25 back covers into
Work(, concrete slump control have always a demand for control under water at concrete 4-6 rice, because worker carries in 18-22cm, the bottom of steel conduit
Steel conduit error is pulled out, steel conduit 1 is extracted on laitance, so as to fracture accident occur, and if upper strata concrete and hole in Reperfu- sion hole
Interlayer laitance 7 between interior lower floor's Underwater Concrete, so as to broken pile.To avoid fracture accident, operating personnel are complete by steel conduit 1 immediately
Portion is picked than air, and clean steel leads the mud outside 1 pipe, and installs shoe 8 in the bottom of steel conduit 1, by threaded ferrule 11 and steel
The bottom screwed connection of conduit 1, there is therebetween seal gasket, then by the closing seam of arc flap valve 10 of shoe 8, closes concrete
The funnel control valve 3 of funnel 4.
The drain tap 2 of the upper end of steel conduit 1 is connected with aspirator vacuum pump 9 with pressure rubber tubing, opens air bleeding valve 2,
Start aspirator vacuum pump 9, check steel conduit device whether gas leakage.After pumping reaches negative pressure 0.1MPa, drain tap 2 is closed simultaneously
2-3 minutes are stood, watch air pressure meter reading, if barometer reading does not change, air-tightness is good after steel conduit 1 installs shoe 8,
So sling concrete funnel 4 and steel conduit device, be inserted perpendicularly into Underwater Concrete 6, allow shoe 8 enter Underwater Concrete 6 in 2-3 rice when, by concrete
Funnel 4 fills concrete C25, rapid opening funnel control valve 3, and the concrete in concrete funnel 4 is fast from the presence of gravity and atmospheric pressure
Speed reaches the shoe 8 of the bottom of steel conduit 1, under the impact of huge concrete, rapidly opens the arc flap valve 10 of shoe 8, steel conduit 1
Interior concrete is merged rapidly with Underwater Concrete 6, and concrete is then successively irrigated into concrete funnel 4, then Underwater Concrete 6 by laitance 7 top open to
After the top of cast-in-situ bored pile exceeds 1 meter of design of pile top absolute altitude, stop perfusion concrete, steel conduit 1 is proposed outside Underwater Concrete 6, then
This concrete pouring terminates.After reaching preset strength Deng concrete strength, carry out concrete inspection and (concrete is examined generally by ultrasound examination
Survey), then the stake is work type, can avoid the generation of broken pile, it is ensured that the construction quality of this, additionally it is possible to save construction cost
(saving rework cost), accelerating construction progress.
Steel conduit device provided by the utility model for cast-in-situ bored pile can be seen that by above-mentioned embodiment,
Can solve the problem that cast-in-situ bored pile or expanding branch grouting pile due to promote conduit processing concrete face and caused by broken pile problem, simultaneously should
The cement that device can effectively solve the problems, such as first batch of underwater concrete pouring is washed with water, and effectively reduces the depth at stake bottom, is improved
The construction quality of cast-in-situ bored pile.In addition, the device provided by the utility model, simple in construction, cost is low, and constructing operation
Simply, broken pile treatment is avoided, so as to save construction cost, accelerating construction progress.
Described in an illustrative manner above with reference to accompanying drawing according to the utility model proposes the steel for cast-in-situ bored pile
Pipe guide.It will be understood by those skilled in the art, however, that it is used for cast-in-situ bored pile for what above-mentioned the utility model was proposed
Steel conduit device, various improvement can also be made on the basis of the utility model content is not departed from.Therefore, the utility model
Protection domain should be determined by the content of appended claims.
Claims (7)
- A kind of 1. steel conduit device for cast-in-situ bored pile, it is characterised in that the bottom including steel conduit and with the steel conduit The shoe of portion's connection；Wherein,The shoe includes screw thread steel bushing and arc flap valve；Wherein, the top of the screw thread steel bushing by screw thread with it is described The bottom connection of steel conduit, the bottom of the screw thread steel bushing are hinged with the arc flap valve, and the arc flap valve is in interior external pressure Folding is freely in the presence of power.
- 2. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 1, it is characterised in thatAlso include being separately positioned on the screw thread steel bushing and the steel conduit junction, the screw thread steel bushing and the arc Seal gasket between the hinged place of flap valve and the arc flap valve.
- 3. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 1, it is characterised in thatThe arc flap valve is 5 valves, is annularly arranged in the bottom of the screw thread steel bushing.
- 4. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 1, it is characterised in thatThe top of the steel conduit is connected with concrete funnel, and junction between is provided with funnel control valve.
- 5. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 4, it is characterised in thatThe top of the steel conduit and the position below the funnel control valve are provided with drain tap.
- 6. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 5, it is characterised in thatThe position of the drain tap is provided with air gauge.
- 7. it is used for the steel conduit device of cast-in-situ bored pile as claimed in claim 5, it is characterised in thatThe drain tap is connected by rubber tube with aspirator vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283890.2U CN206800384U (en) | 2016-11-25 | 2016-11-25 | Steel conduit device for cast-in-situ bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283890.2U CN206800384U (en) | 2016-11-25 | 2016-11-25 | Steel conduit device for cast-in-situ bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206800384U true CN206800384U (en) | 2017-12-26 |
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ID=60728800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621283890.2U Active CN206800384U (en) | 2016-11-25 | 2016-11-25 | Steel conduit device for cast-in-situ bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206800384U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522217A (en) * | 2016-11-25 | 2017-03-22 | 中冶交通建设集团有限公司 | Steel conduit device and broken pile treatment construction method for cast-in-situ bored pile |
| CN110067245A (en) * | 2019-03-22 | 2019-07-30 | 西南交通大学 | It is a kind of can expanding reinforcing spiral self-drilling type piling bar and its method of construction |
| CN111764393A (en) * | 2020-06-30 | 2020-10-13 | 首钢水城钢铁(集团)赛德建设有限公司 | Pressure measurement inspection device for guide pipe for underwater concrete pouring and pouring method |
-
2016
- 2016-11-25 CN CN201621283890.2U patent/CN206800384U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522217A (en) * | 2016-11-25 | 2017-03-22 | 中冶交通建设集团有限公司 | Steel conduit device and broken pile treatment construction method for cast-in-situ bored pile |
| CN110067245A (en) * | 2019-03-22 | 2019-07-30 | 西南交通大学 | It is a kind of can expanding reinforcing spiral self-drilling type piling bar and its method of construction |
| CN111764393A (en) * | 2020-06-30 | 2020-10-13 | 首钢水城钢铁(集团)赛德建设有限公司 | Pressure measurement inspection device for guide pipe for underwater concrete pouring and pouring method |
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| GR01 | Patent grant |