CN207160022U - The special-shaped prefabricated support pile of slip casting in a kind of button type - Google Patents
The special-shaped prefabricated support pile of slip casting in a kind of button type Download PDFInfo
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- CN207160022U CN207160022U CN201721092471.5U CN201721092471U CN207160022U CN 207160022 U CN207160022 U CN 207160022U CN 201721092471 U CN201721092471 U CN 201721092471U CN 207160022 U CN207160022 U CN 207160022U
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Abstract
The utility model discloses a kind of special-shaped prefabricated support pile of slip casting in button type, by special-shaped prefabricated support pile（1）Make-up construction composition, 4 prefabricated support piles of abnormal shape（1）Make-up is constructed, and forms the special-shaped prefabricated support pile splicing circle of a make-up（4）, and in the special-shaped prefabricated support pile splicing circle of make-up（4）Middle progress high-pressure rotary-spray mixing pile construction, the gap that closure make-up is spliced to form, finally coordinates the thin-wall steel tube after pile sinking（6）Interior slip casting, in special-shaped prefabricated support pile（1）Top sets concrete Guan Liang（5）Form whole support system.The utility model has larger bending resistance and horizontal force resistant performance, construction convenient quickly, construction costs are cheap and environment influences small, the special-shaped prefabricated support pile of slip casting particularly in the small button type of occupation of land scope.
Description
Technical field
Geotechnical Engineering field is the utility model is related to, the special-shaped prefabricated support pile of slip casting in specially a kind of button type.
Background technology
In recent years, build and flourish with China's building, underground engineering is rapidly growing, the development and utilization of the underground space
It is increasingly prosperous.With rising steadily for land price, the utilization of the underground space all the more urgent, therefore, outside the basement of planning
Wall is more and more nearer apart from building site red line, and the scope available for pattern foundation pit supporting structure is also less and less, and conventional support pile adds sealing
Width is taken up an area in stake at least needs 2.5m, and the operating distance of construction machinery, then take up an area the distance at least needing 5.0m, such gesture in addition
The utilization rate in soil must be reduced, it is less economical.Therefore, active demand one kind can meet sealing in base pit engineering, and and can meets
Earth-retaining, and take up an area scope small supporting construction and construction method.
Number of patent application is that CN201310527415.X patent application discloses a kind of slip casting prefabricated pile and grouting method,
Including pile tube, longitudinally provided with Grouting Pipe, multiple ring Grouting Pipes is erect, ring is embedded in pipe to steel reinforcement cage from top to bottom in the pile tube
On the wall of stake and multiple ring Grouting Pipes connect with erectting Grouting Pipe respectively, and ring is provided with gunniting hole on ring Grouting Pipe face.Should
Though method in the case where not producing damage to pile tube, can either effectively expand the frictional force between pile tube and ground soil property, carry
The vertical bearing capacity of high pile tube, while and can enough facilitates the pile extension for completing pile tube, anti-corrosion, realize the note that pressurizeed between pile tube and ground
The slip casting pipe pile and grouting method of slurry, but still suffer from following deficiency：（1）Resistance to compression or the resistance to plucking that pile tube vertically carries can only be improved
Can, and do not strengthen to the base pit engineering support pile horizontal resist forces of carrying for level；（2）Continuous water-stop body can not be formed
System, can occur drainage for foundation pit supporting project, jeopardize deep pit monitor.
Therefore it provides it is a kind of have good bending resistance and horizontal force resistant performance, construction convenient quickly, construction costs cheap and
Environment influence is small, particularly takes up an area the special-shaped prefabricated support pile of slip casting in the small button type of scope, being one is worth research
Problem.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the utility model provides one kind, and there is larger bending resistance and water resistant to put down
Power performance, construction convenient quickly, construction costs are cheap and environment influence is small, and it is different particularly to take up an area slip casting in the small button type of scope
The prefabricated support pile of type.
What the purpose of this utility model was realized in：
The special-shaped prefabricated support pile of slip casting in a kind of button type, it is made up of the special-shaped prefabricated make-up of support pile 1 construction, 4 abnormal shapes
The prefabricated make-up of support pile 1 construction, the special-shaped prefabricated support pile splicing circle 4 of a make-up is formed, and in the special-shaped prefabricated support pile of make-up
High-pressure rotary-spray mixing pile construction is carried out in splicing circle 4, the gap that closure make-up is spliced to form, finally coordinates the Steel Thin-Wall after pile sinking
Slip casting in pipe 6, concrete Guan Liang 5 is set to form whole support system at the special-shaped prefabricated top of support pile 1.
The special-shaped prefabricated both ends angle of support pile 1 of slip casting is respectively 1/4 arc end angle 3 in described button type, in addition both ends
Angle is respectively the irregular prefabricated support pile of abnormal shape at right angle；1/4 arc radius at described both ends angle is identical, and radius length is different
0.2~0.25 times of the prefabricated long side of support pile 1 of type；The short side of described special-shaped prefabricated support pile 1 and long side ratio is 0.8~
0.9；
Described concrete Guan Liang 5 is connected with first of concrete inner support 9；
The center of described different described special-shaped prefabricated support pile 1 is hollow special-shaped prefabricated support pile center circle 2；It is described
0.3 times of a diameter of special-shaped precast pile long side of special-shaped prefabricated support pile center circle 2；
The both ends of described special-shaped prefabricated support pile 1 are equipped with steel end plate 7；Described steel end plate 7 passes through welding and abnormal shape
The stake end of prefabricated support pile 1 is fixed；The pile body arrangement of reinforcement of described special-shaped prefabricated support pile 1 is high-strength prestressed concrete steel
Rod 8；
High-strength steel bar for prestressed concrete 8 inside the circular arc side at 1/4 arc end angle 3 of described prefabricated support pile
It is symmetrical along circular arc vault；
Described special-shaped prefabricated support pile 1 is connected by concrete purlin 10 with second concrete inner support 11；
The job site of described special-shaped prefabricated support pile is constructed using static pressure method or other pile sinking process make-ups, formation pair
Button continuous supporting structure, the continuous supporting structure centre after make-up is constructed are spliced to form the special-shaped prefabricated support pile of a make-up
Splicing circle 4；
After described special-shaped prefabricated supporting pile driving construction terminates, progress high-pressure rotary-spray stirs in continuous supporting structure centre circular hole
Construction is mixed, after high-pressure rotary-spray stirring construction, the special-shaped prefabricated support pile of make-up formed by the prefabricated support pile make-up of 4 abnormal shapes
Splicing circle 4 blocks closely knit, formation water-stop body from stake bottom to stake top splicing seams.
Positive beneficial effect：Compared with existing conventional art, the utility model has the following advantages that：1. reduce pattern foundation pit supporting structure
Structure land used scope, greatly develop the utilization rate in soil；Work progress produces without mud emission, no airborne dust, meets green ring
Protect building requirements；2. foundation pit supporting project is cheap, speed of application is fast, and total lever factor greatly shortens, and realizes that less fund is quick
The benefit of turnover；3. construction method is simple, there is the condition of wide popularization and application；4. special-shaped precast pile is empty stomach section, save
Concrete, and the interior construction rotating spraying mixture pile sealing of circular hole that counterpart is formed, without setting row's water-seal pile again, save Building wood
Material；5. special-shaped precast pile plant produced, quality controllable, it can be mass, and prefabricated pile can apply prestressing force, further improve stake
Body rigidity, material property is given full play to, save material.
Brief description of the drawings
Fig. 1 is floor map of the present utility model；
Fig. 2 is the utility model schematic perspective view；
Fig. 3 is special-shaped prefabricated support pile schematic perspective view；
Fig. 4 is special-shaped prefabricated support pile stake end cross-sectional view；
Fig. 5 is the utility model foundation pit supporting construction diagrammatic cross-section；
It is in figure：Special-shaped prefabricated supporting pile body 1, special-shaped prefabricated support pile center circle 2, the end circular arc 3 of angle 1/4, make-up are special-shaped
Prefabricated support pile splicing circle 4, concrete Guan Liang 5, thin-wall steel tube 6, steel end plate 7, steel bar for prestressed concrete 8, first it is mixed
Coagulate native inner support 9, concrete purlin 10, second concrete inner support 11.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the technical solution of the utility model is described in detail：
As shown in figures 1-4, the special-shaped prefabricated support pile of slip casting in a kind of button type, is constructed by the special-shaped prefabricated make-up of support pile 1
Composition, the prefabricated make-up of support pile 1 construction of 4 abnormal shapes, the special-shaped prefabricated support pile splicing circle 4 of a make-up is formed, and it is different in make-up
High-pressure rotary-spray mixing pile construction is carried out in the prefabricated support pile splicing circle 4 of type, the gap that closure make-up is spliced to form, it is heavy finally to coordinate
Slip casting in thin-wall steel tube 6 after stake, concrete Guan Liang 5 is set to form whole support system at the special-shaped prefabricated top of support pile 1.
The special-shaped prefabricated both ends angle of support pile 1 of slip casting is respectively 1/4 arc end angle 3 in described button type, in addition both ends
Angle is respectively the irregular prefabricated support pile of abnormal shape at right angle；1/4 arc radius at described both ends angle is identical, and radius length is different
0.2~0.25 times of the prefabricated long side of support pile 1 of type；The short side of described special-shaped prefabricated support pile 1 and long side ratio is 0.8~
0.9；
Described concrete Guan Liang 5 is connected with first of concrete inner support 9；
The center of described different described special-shaped prefabricated support pile 1 is hollow special-shaped prefabricated support pile center circle 2；It is described
0.3 times of a diameter of special-shaped precast pile long side of special-shaped prefabricated support pile center circle 2；
The both ends of described special-shaped prefabricated support pile 1 are equipped with steel end plate 7；Described steel end plate 7 passes through welding and abnormal shape
The stake end of prefabricated support pile 1 is fixed；The pile body arrangement of reinforcement of described special-shaped prefabricated support pile 1 is high-strength prestressed concrete steel
Rod 8；
High-strength steel bar for prestressed concrete 8 inside the circular arc side at 1/4 arc end angle 3 of described prefabricated support pile
It is symmetrical along circular arc vault；
Described special-shaped prefabricated support pile 1 is connected by concrete purlin 10 with second concrete inner support 11；
The job site of described special-shaped prefabricated support pile is constructed using static pressure method or other pile sinking process make-ups, formation pair
Button continuous supporting structure, the continuous supporting structure centre after make-up is constructed are spliced to form the special-shaped prefabricated support pile of a make-up
Splicing circle 4；
After described special-shaped prefabricated supporting pile driving construction terminates, progress high-pressure rotary-spray stirs in continuous supporting structure centre circular hole
Construction is mixed, after high-pressure rotary-spray stirring construction, the special-shaped prefabricated support pile of make-up formed by the prefabricated support pile make-up of 4 abnormal shapes
Splicing circle 4 blocks closely knit, formation water-stop body from stake bottom to stake top splicing seams.
The construction method of the special-shaped prefabricated support pile of slip casting in a kind of button type, including following main construction procedure：
Step 1：After the special-shaped prefabricated factory process of support pile 1 production, transport to engineering site, pile sinking machinery is in place, debugging
Pile sinking machine and equipment；
Step 2：After stabilization, special-shaped prefabricated support pile 1 is depressed slowly in place for pile press machine, and constantly corrects two-way hang down
Straight deviation；
Step 3：During prefabricated support pile special-shaped using more piece, live pile connection construction；
Step 4：Special-shaped prefabricated support pile splicing circle central high pressure jet mixing construction；
Step 5：The concrete Guan Liang 5 and first of concrete inner support 9 of the special-shaped prefabricated stake top of support pile 1 are set, and set
Put compaction grouting thin-wall steel tube 6；
Step 6：Earth excavation to second supports absolute altitude, and sets in concrete purlin 10 and second concrete and prop up
Support 11；
Step 7：If infiltration situation occur in special-shaped prefabricated support pile splicing seams, compaction grouting is carried out in thin-wall steel tube 6；
Step 8：If Excavation Process does not find prefabricated support pile splicing seams infiltration, carry out follow-up base pit engineering and apply
Work, foundation ditch subsequent construction is as common foundation ditch construction method.
Embodiment 1
Special-shaped prefabricated support pile 1 is concrete precast pile, and its concrete strength of pile grade is C80, and length of long sides is
500mm, length of short sides 400mm, special-shaped prefabricated 2 a diameter of 150mm of support pile center circle, 1/4 arc end angle 3 it is a diameter of
300mm, the special-shaped interior steel bar for prestressed concrete 8 set of the prefabricated pile body of support pile 1, is not less than using tensile strength
1420MPa, diameter 12.6mm model；
Work progress if desired pile extension, then two prefabricated support piles of abnormal shape be welded together by stake end steel end plate 7,
Then integral construction pile sinking, wherein steel end plate thickness are 20mm, and strength grade is Q235B levels, outer cross section and special-shaped prefabricated supporting
Stake is identical；
During site operation, use 4 prefabricated support piles of abnormal shape to implement in the form of the make-up of 1/4 arc end angle 3, then every 4
After special-shaped prefabricated sink, the special-shaped prefabricated support pile splicing circle 4 of a make-up can be formed, it is 300mm that it, which splices circular diameter,.
Based on the special-shaped prefabricated support pile of slip casting in button type of the present utility model and construction method, comprise the following steps：
The first step：After special-shaped prefabricated support pile factory process production, transporting to engineering site, piling machinery is in place, according to
Design requirement, test pile is carried out first, to determine the technical indicators such as piling speed, maximum pressure value, and check piling machine equipment, apply
Work technique and technical measures；
Second step：When pile press machine is in place, starts platform legs jacking cylinder dressing plate and be in horizontality.Stake bury to
During 50cm, the perpendicularity of positive stake and the levelness of platform are moved with the machine mode of walking, ensures that the vertical missing two-way in length and breadth of stake is no more than
0.5%.After stable, special-shaped prefabricated support pile is depressed slowly by make-up mode by root, and constantly correct two-way vertical missing；
3rd step：When prefabricated support pile special-shaped using more piece, the pile crown preferably 0.5~1.0m above ground level for the pile cutoff that buries；
Section stake should keep straight up and down during pile extension, and dislocation deviation cannot be greater than 2mm.Before welding should be by the end plate steel brush of two section stakes
Clean with water totally, until groove exposes metallic luster, save stake in guarantee and vertically weld afterwards.Two welders are carried out simultaneously during welding, first
Symmetrical spot welding 4~6 point on groove circumference, welding are no less than 2 layer 3, and every layer of welding slag must be cleaned out, and ensure that weld seam is continuous
It is full, natural cooling about 8~10min.
4th step：Special-shaped prefabricated support pile splicing circle central high pressure jet mixing construction, Construction of High Pressure Jet Grouting Pile should use
Tri-tube method.Air pressure is not less than 0.7MPa, and cement paste pressure is preferably greater than 25MPa, and cement mortar pressure is not less than 3.0MPa, or by
Unit in charge of construction determines according to field test.Churning lifts 15~25cm/min of speed, and cement grout flow is more than 30L/min.When
Grouting Pipe inserts drilling, and nozzle reaches designed elevation can jet groutinl.After jet groutinl parameter reaches setting, by rotary churning pile
Technological requirement, hoisting grouting pipe, from bottom to top jet groutinl.Rotating speed of the drilling rod in lifting process is 15~20r/min, note
The lap of splice of slurry pipe segmentation lifting is preferably greater than 100mm, and high-pressure rotary jet grouting pile uses P.O.42.5 level Portland cements.Cement
With the total dosage 550kg/m of flyash3/, cement:Flyash=1:0.3, the ratio of mud 0.8 of cement grout；
5th step：High-pressure rotary-spray mixing pile mortar depositing construction finishes, and it is mixed to concrete Guan Liang 5 and first that excavation of foundation pit unloads soil
Coagulate the native bottom absolute altitude of inner support 9, assembling reinforcement, casting concrete Guan Liang 5 and first of concrete inner support 9；Casting concrete is preced with
The thin-wall steel tube overlapped with prefabricated pile splicing circle central axis is set during beam 5, in concrete Guan Liang 5, and steel pipe footpath is not less than
100mm, thin-wall steel tube thickness are not less than 6mm, strength classes of structural steel Q235B, and tube top absolute altitude is higher than the high 200mm of Guan Liang top mark,
Thin-wall steel tube welds together with special-shaped prefabricated supporting stake top steel end plate；
6th step：As shown in figure 5, treat special-shaped prefabricated supporting stake top concrete Guan Liang 5 and first of concrete inner support the last 9
After degree reaches the 80% of design strength, continue the symmetrical excavation pit in layering and zoning downwards.Until being excavated to the He of concrete purlin 10
The bottom of second concrete inner support 11；Observe special-shaped prefabricated support pile splicing seams infiltration situation incessantly simultaneously；
7th step：If it was found that infiltration situation occur in special-shaped prefabricated support pile splicing seams, should be carried out in time in thin-wall steel tube
Compaction grouting.Compaction grouting uses mixed serum, i.e. cement coagulates slurries soon with waterglass biliquid, and cement is common using P.O42.5
Silicate cement, the ratio of mud 0.6, while add the waterglass of cement mixing content 2%, the slurries presetting period is 1~2 hour.Ensure slip casting
Quality and effect, do when slurry seal plate is 100 thick C10 concretes slip casting in two times, be spaced more than 2 hours on top first, treat for the first time
After injecting slurries initial set, then secondary grouting is carried out, grouting pressure is not less than 0.5MPa；
8th step：If Excavation Process does not find special-shaped prefabricated support pile splicing seams infiltration, follow-up foundation ditch work is carried out
Journey is constructed, and foundation ditch subsequent construction is as common foundation ditch construction method.
Compared with existing conventional art, the utility model has the following advantages that：1. reduce foundation pit supporting construction land used scope,
Greatly develop the utilization rate in soil；Work progress produces without mud emission, no airborne dust, meets Green environmental-protection building requirement；2.
Foundation pit supporting project is cheap, and speed of application is fast, and total lever factor greatly shortens, and realizes the benefit that less fund is quickly had enough to meet the need；3.
Construction method is simple, has the condition of wide popularization and application；4. special-shaped precast pile is empty stomach section, concrete, and counterpart are saved
Construction rotating spraying mixture pile sealing in the circular hole of formation, without setting row's water-seal pile again, save construction material；5. special-shaped precast pile
Plant produced, it is quality controllable, it can be mass, and prefabricated pile can apply prestressing force, further improve pile body stiffness, give full play to
Material property, save material.
The foregoing is only preferred embodiment of the present utility model, should not be construed as to limitation of the present utility model, it is all according to
All any modification, equivalent and improvement made within design philosophy and principle of the present utility model etc., should be included in this reality
Within new protection domain.
Claims (9)
- A kind of 1. special-shaped prefabricated support pile of slip casting in button type, it is characterised in that：By special-shaped prefabricated support pile（1）Make-up construction group Into 4 prefabricated support piles of abnormal shape（1）Make-up is constructed, and forms the special-shaped prefabricated support pile splicing circle of a make-up（4）, and in make-up Special-shaped prefabricated support pile splicing circle（4）Middle progress high-pressure rotary-spray mixing pile construction, the gap that closure make-up is spliced to form, finally matches somebody with somebody Close the thin-wall steel tube after pile sinking（6）Interior slip casting, in special-shaped prefabricated support pile（1）Top sets concrete Guan Liang（5）Formed whole Support system.
- 2. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described make-up The special-shaped prefabricated support pile of slip casting in formula（1）Both ends angle is respectively 1/4 arc end angle（3）, both ends angle is respectively right angle in addition Irregular special-shaped prefabricated support pile；1/4 arc radius at described both ends angle is identical, and radius length is special-shaped prefabricated support pile （1）0.2~0.25 times of long side；Described special-shaped prefabricated support pile（1）Short side and long side ratio be 0.8~0.9.
- 3. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described coagulation Native Guan Liang（5）With first of concrete inner support（9）It is connected.
- 4. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described abnormal shape Prefabricated support pile（1）Center be hollow special-shaped prefabricated support pile center circle（2）；Described special-shaped prefabricated support pile center circle （2）0.3 times of a diameter of special-shaped precast pile long side.
- 5. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described abnormal shape Prefabricated support pile（1）Both ends be equipped with steel end plate（7）；Described steel end plate（7）Pass through welding and special-shaped prefabricated support pile（1） Stake end fix；Described special-shaped prefabricated support pile（1）Pile body arrangement of reinforcement be high-strength steel bar for prestressed concrete（8）.
- 6. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 2, it is characterised in that：Described is prefabricated 1/4 arc end angle of support pile（3）Circular arc side inside high-strength steel bar for prestressed concrete（8）It is symmetrical along circular arc vault Distribution.
- 7. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described abnormal shape Prefabricated support pile（1）Pass through concrete purlin（10）With second concrete inner support（11）Connection.
- 8. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described abnormal shape Prefabricated support pile（1）Job site constructed using static pressure method or other pile sinking process make-ups, form button type continuous supporting knot Structure, the continuous supporting structure centre after make-up is constructed are spliced to form the special-shaped prefabricated support pile splicing circle of a make-up（4）.
- 9. the special-shaped prefabricated support pile of slip casting in a kind of button type according to claim 1, it is characterised in that：Described abnormal shape Prefabricated support pile（1）After construction terminates, high-pressure rotary-spray stirring construction is carried out in continuous supporting structure centre circular hole, through high pressure After jet mixing construction, the special-shaped prefabricated support pile splicing circle of make-up formed by the prefabricated support pile make-up of 4 abnormal shapes（4）From stake Bottom to stake top splicing seams block closely knit, formation water-stop body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092471.5U CN207160022U (en) | 2017-08-29 | 2017-08-29 | The special-shaped prefabricated support pile of slip casting in a kind of button type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092471.5U CN207160022U (en) | 2017-08-29 | 2017-08-29 | The special-shaped prefabricated support pile of slip casting in a kind of button type |
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| CN207160022U true CN207160022U (en) | 2018-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326912A (en) * | 2017-08-29 | 2017-11-07 | 南京市测绘勘察研究院股份有限公司 | The special-shaped prefabricated support pile of slip casting and construction method in a kind of button type |
| CN109594573A (en) * | 2018-11-22 | 2019-04-09 | 东通岩土科技股份有限公司 | The assembly type crown beam structure of foundation pit enclosure wall |
-
2017
- 2017-08-29 CN CN201721092471.5U patent/CN207160022U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326912A (en) * | 2017-08-29 | 2017-11-07 | 南京市测绘勘察研究院股份有限公司 | The special-shaped prefabricated support pile of slip casting and construction method in a kind of button type |
| CN109594573A (en) * | 2018-11-22 | 2019-04-09 | 东通岩土科技股份有限公司 | The assembly type crown beam structure of foundation pit enclosure wall |
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