Steel reinforcement cage multiple spot dropping feeder and using method is inserted after drilled press-grouting pile
Technical field
The present invention relates to the cast-in-situ bored pile pile-forming equipment technical field in architectural engineering foundation basic construction, particularly to
Steel reinforcement cage multiple spot dropping feeder and using method is inserted after a kind of drilled press-grouting pile.
Background technology
At present, in the foundation basic construction of industry and civil building engineering, in long auger, pipe, pump concrete is simultaneously
Vibration insertion steel reinforcement cage, referred to as drilled press-grouting pile in the stake holes irrigating plain concrete.Drilled press-grouting pile has pile quality
Good, construction cost is low, efficiency of construction is high and the complex art advantage such as work progress environmental protection.As shown in figure 1, traditional boring
Guncreting pile construction technology is using the changeover panel 2 being placed in steel reinforcement cage 1 top, and will be connected with the delivery bar 4 of medium and low frequency vibrating device 3
It is disposed through in steel reinforcement cage 1, from top, vertical pressure is applied to steel reinforcement cage and steel reinforcement cage is inserted plain concrete pile by vibration
In body.However, because the rigidity of steel reinforcement cage itself is simultaneously little, especially when its length is longer (as cage length is more than 20m stake), adding
The larger resistance of drilled press-grouting pile stake holes inner concrete, traditional cage putting device can cause larger the answering in steel reinforcement cage top and end
Power is concentrated, and therefore during steel reinforcement cage sinking, steel reinforcement cage easily occurs bending and deformation in stake holes or damages, steel reinforcement cage
Flexural deformation can have a strong impact on pile quality, and the sinking construction of steel reinforcement cage also cannot be smoothed out.And, when length of reinforcing cage mistake
When long, because concrete buoyancy is very big, steel reinforcement cage is difficult to even not sink to projected depth.
Content of the invention
It is an object of the invention to provide inserting steel reinforcement cage multiple spot dropping feeder and using method after a kind of drilled press-grouting pile, it is used for
Solve in the construction of preexisting hole guncreting pile-forming after-inserted steel reinforcement cage, flexural deformation when steel reinforcement cage sinks damages, or even cannot
Sink to projected depth, thus affecting the problem of pile quality.
For solving above-mentioned technical problem, technical scheme is as follows:
Steel reinforcement cage multiple spot dropping feeder is inserted, comprising: one is arranged at the changeover panel at described steel reinforcement cage top after drilled press-grouting pile;One
Match and vertically run through the delivery bar of described steel reinforcement cage with described changeover panel;One is arranged at the described medium and low frequency delivering masthead end
Vibrator;Also include: stirrup, described stirrup includes inner side stirrup and outside stirrup, described inner side stirrup and described outside stirrup
It is respectively welded inside and outside described steel reinforcement cage longitudinal reinforcement;Least one set multiple spot vibrating device, described multiple spot vibrating device
Including be welded on described deliver bar on l steel bar and be welded on sleeve, described l steel bar and institute on the stirrup of described inner side
State sleeve to match;And shoe, described shoe is the circular platform type wide at the top and narrow at the bottom being made up of apical ring plate, diagonal brace and bottom circumferential lamella
Frame structure, described apical ring plate is fixedly connected with the end of the longitudinal reinforcement of described steel reinforcement cage.
Further, the internal diameter of described sleeve is slightly larger than the diameter of described l steel bar.
Further, multiple spot vibrating device described in every group is 3, and 3 described multiple spot vibrating devices correspond to along described stirrup
Cross section circumference is angularly arranged in 120 °.
Further, the lower end of described diagonal brace is knife edge type.
Further, described diagonal brace is 3, and 3 described diagonal braces are in 120 ° along described apical ring plate and described bottom circumferential lamella circumference
Angularly it is distributed.
Further, the described diameter delivering bar is slightly larger than described bottom circumferential lamella internal diameter.
Further, the adjacent level interval described in two groups between multiple spot vibrating device is the 2- of described steel reinforcement cage internal diameter
3 times.
Insert the using method of steel reinforcement cage multiple spot dropping feeder after drilled press-grouting pile, comprise the steps:
Step one, adopt drilling tool pore-forming, and into stake holes be pumped concrete;
Step 2, by described drilling & grouting piling note stake after insert steel reinforcement cage multiple spot dropping feeder be installed on described steel reinforcement cage;Step
3rd, using crane, the steel reinforcement cage being provided with described multiple spot dropping feeder is hung in above described stake holes and be aligned spacing;
After step 4, the segment distance that sunk using the deadweight of described steel reinforcement cage, with the continuous sinking suffered by it of steel reinforcement cage
Resistance is gradually increased, and treats that steel reinforcement cage cannot rely on deadweight to continue to sink, starts described medium and low frequency vibrator so that described steel reinforcement cage
Body vibration sinks down into design attitude, and drives described delivery bar to rise using crane, until pulling out described delivery bar, institute completely
Stating steel reinforcement cage and stay design attitude, treating concrete setting thus forming reinforced concrete pile.
Further, described step 2 includes: described deliver being welded in the l steel bar on bar and is aligned and inserts and be welded in
In sleeve on described steel reinforcement cage stirrup, so that the described end delivering bar is fastened on described bottom circumferential lamella simultaneously.
Compared with prior art, beneficial the having the technical effect that of the present invention
1st, the present invention provide drilled press-grouting pile after insert steel reinforcement cage multiple spot dropping feeder, include be arranged at steel reinforcement cage top turn
Change disk;Match and vertically run through the delivery bar of steel reinforcement cage with changeover panel;It is arranged at the medium and low frequency vibrator delivering masthead end;Point
The inner side stirrup Wei Yu not being welded to connect inside and outside steel reinforcement cage and with longitudinal reinforcement and outside stirrup;Least one set multiple spot vibrates
Device, multiple spot vibrating device includes being welded on the l steel bar delivered on bar and is welded on sleeve on the stirrup of inner side, l shaped steel
Muscle is matched with sleeve;And shoe, shoe is the frame structure of the circular platform type that apical ring plate, diagonal brace and bottom circumferential lamella form, top
The diameter with diameter greater than bottom circumferential lamella of ring flat-plate, apical ring plate is welded to connect with the end of the longitudinal reinforcement of steel reinforcement cage.This drilling & grouting piling
Inserting steel reinforcement cage multiple spot dropping feeder after stake makes the plain concrete of drilling & grouting piling note stake more closely knit under steel reinforcement cage body vibration, with
When be conducive to sinking in the hole for grout pile containing plain concrete for the steel reinforcement cage, improve pile efficiency and pile-forming effect.And
And, the setting of stirrup and multiple spot vibrating device further enhances the integral rigidity of steel reinforcement cage, and makes the overall stress of steel reinforcement cage
Evenly, improve steel reinforcement cage sinking efficiency while reduce steel reinforcement cage occur bending and deformation in stake holes or damage can
Can, further increase the quality of pile.Additionally, the lower resistance steel shoe of steel reinforcement cage end improves the whole of steel reinforcement cage end
Body rigidity.This multiple spot dropping feeder structure is simply firm, improves construction quality and efficiency of construction.
2nd, the present invention supply drilled press-grouting pile after insert steel reinforcement cage multiple spot dropping feeder using method, drilling tool pore-forming first, and
Pump into concrete into stake holes;Secondly insert steel reinforcement cage multiple spot dropping feeder after drilled press-grouting pile being installed on steel reinforcement cage;Then will pacify
Steel reinforcement cage equipped with multiple spot dropping feeder hangs in plain concrete pile in the hole;Last deadweight sinking one segment distance first with steel reinforcement cage,
Restart medium and low frequency vibrator so that steel reinforcement cage sinks down into design attitude, and drive delivery bar to rise up to completely using crane
Pulling out delivery bar, steel reinforcement cage stays design attitude, treating concrete setting thus forming reinforced concrete pile.Using this using method
Carry out the sinking construction of longer steel reinforcement cage, solve that long length steel reinforcement cage sinking difficulty is big, flexible deformation, guncreting pile length are subject to
The technical barrier of limit.
Brief description
Fig. 1 is the structural representation of slotting steel reinforcement cage dropping feeder after existing drilled press-grouting pile;
Fig. 2 be one embodiment of the invention drilled press-grouting pile after insert steel reinforcement cage dropping feeder structural representation;
Fig. 3 is the a-a sectional view of Fig. 2;
Fig. 4 be one embodiment of the invention drilled press-grouting pile after insert the structure of multiple spot vibrating device of steel reinforcement cage dropping feeder and show
It is intended to;
Fig. 5 be one embodiment of the invention drilled press-grouting pile after insert steel reinforcement cage dropping feeder multiple spot vibrating device shoe
Structural representation;
Fig. 6 is the b-b sectional view of Fig. 5;
Fig. 7 be one embodiment of the invention drilled press-grouting pile after insert steel reinforcement cage dropping feeder diagonal brace structural representation.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to steel reinforcement cage multiple spot dropping feeder slotting after drilled press-grouting pile proposed by the present invention
And using method is described in further detail.According to following explanation and claims, advantages and features of the invention will be more clear
Chu.It should be noted that, accompanying drawing all in the form of very simplification and all using non-accurately ratio, only in order to convenient, lucidly
Aid in illustrating the purpose of the embodiment of the present invention.For sake of convenience, described below " on ", the upper and lower side of D score and accompanying drawing
To consistent, but this can not become the restriction of technical solution of the present invention.
The invention provides inserting steel reinforcement cage multiple spot dropping feeder and its using method after a kind of drilled press-grouting pile, pre- for solving
In the construction of pore-forming guncreting pile-forming after-inserted steel reinforcement cage, flexural deformation when steel reinforcement cage sinks damages, or even cannot sink to
Projected depth, thus affect the problem of pile quality.
Steel reinforcement cage multiple spot dropping feeder and use is inserted after the drilled press-grouting pile describing the present invention with reference to Fig. 2 to Fig. 7 in detail
Method.
Embodiment one
Insert steel reinforcement cage multiple spot dropping feeder after the drilled press-grouting pile of the present embodiment, be arranged at turning of steel reinforcement cage 10 top including one
Change disk 20;One is matched with changeover panel 20 and vertically runs through the delivery bar 30 of steel reinforcement cage 10;Stirrup 13, stirrup 13 includes inner side steel
Hoop 131 and outside stirrup 132, inner side stirrup 131 and outside stirrup 132 are respectively welded inside and outside steel reinforcement cage 10 longitudinal reinforcement 11
Both sides;One is arranged at the medium and low frequency vibrator 40 delivering bar 30 top;Least one set multiple spot vibrating device 50, multiple spot vibrating device
50 include being welded on the l steel bar 51 delivered on bar 30 and are welded on sleeve 52 on the stirrup 131 of inner side, l steel bar 51 with
Sleeve 52 matches;And shoe 60, shoe 60 is the circle wide at the top and narrow at the bottom that apical ring plate 61, diagonal brace 62 and bottom circumferential lamella 63 form
The frame structure (i.e. the diameter with diameter greater than bottom circumferential lamella 63 of apical ring plate 61) of bench-type, the longitudinal reinforcement of apical ring plate 61 and steel reinforcement cage
11 end is fixedly connected.
Specifically, can be according to Practical Project demand subsection setup least one set multiple spot vibrating device 50 so that holing
The plain concrete of pressure bored concrete pile obtains effectively closely knit, is conducive to steel reinforcement cage 10 in the hole for grout pile containing plain concrete simultaneously
Sinking, improve pile efficiency and pile-forming effect.Insert steel reinforcement cage multiple spot dropping feeder after the drilled press-grouting pile of the present embodiment to be suitable for
In the sinking construction of longer steel reinforcement cage, solve long length steel reinforcement cage sinking difficulty big, flexible deformation and guncreting pile length
Limited technical barrier, is particularly suited for the foundation pile of elongated arrangement of reinforcement, slope protection pile, uplift pile etc..And, for fixing multiple spot vibration
Delivery device 50 and the l steel bar 51 designing and its sleeve 52 structure make the steel reinforcement cage 10 in sinking stage in the band delivering bar 30
The overall uniform stressed of dynamic descending reinforcing cage 10, its vertical reinforcement 11 Internal and external cycle stirrup, i.e. inner side stirrup 131 and outside stirrup 132
Setting further enhances the integral rigidity of steel reinforcement cage 10, reduces steel reinforcement cage 10 while improving steel reinforcement cage 10 sinking efficiency
The possibility occuring bending and deformation in stake holes or damaging, further increases the quality of pile.The lower resistance steel of steel reinforcement cage end
Shoe 60 processed improves the integral rigidity of steel reinforcement cage end.
Further, sleeve 52 internal diameter is slightly larger than l steel bar diameter (about 10mm), to be welded in the l type delivering bar 30
Reinforcing bar 51 fast and easy is aligned and inserts in the sleeve 52 being welded on the stirrup 131 of inner side, and is shipped to design in steel reinforcement cage 10
L steel bar 51 is facilitated to extract out in sleeve 52 after depth.
Certainly it is contemplated that disperseing steel reinforcement cage 10 vertical applied force, it is to avoid medium and low frequency vibrating device 40 sinks in steel reinforcement cage 10
During the vertical pressure that applies, cause the larger stress concentration in steel reinforcement cage 10 top and end, and lead to steel reinforcement cage 10 in stake
In the hole occurs bending and deformation or damages, the problem of impact pile quality, and every group of multiple spot vibrating device 50 is 3,3 multiple spot vibrations
Device 50 is angularly arranged along stirrup corresponding cross section circumference in 120 °.Vertical between two groups of adjacent multiple spot vibrating devices 50
Spacing is 2-3 times of steel reinforcement cage internal diameter.It is preferred that as shown in fig. 7, the lower end of diagonal brace 62 is knife edge type, the edge of a knife is towards steel reinforcement cage
10 sinking directions, to reduce the resistance to shoe 60 for the concrete, reduction steel reinforcement cage 10 occurs bending and deformation because of stress raisers
Possibility.And, increase steel reinforcement cage while coagulation soil resistance when lower resistance steel shoe 60 can sink reducing steel reinforcement cage 10
The rigidity of 10 ends.Diagonal brace 62 is 3, and 3 diagonal braces 62 are angularly distributed along apical ring plate 61 and bottom circumferential lamella 62 circumference in 120 °, from
And make shoe 60 stress balance.Especially, the longitudinal reinforcement 11 of steel reinforcement cage 10 end is all welded on apical ring plate 61, delivers bar
The internal diameter with diameter greater than bottom circumferential lamella 62 of 30 head, therefore deliver bar 30 and be stuck in bottom circumferential lamella 62 so that delivery bar 30 drives
Lower resistance steel shoe 60 so drive steel reinforcement cage 10 sink in the plain concrete in stake holes, and prevent steel reinforcement cage 10 from deforming or
Damage, thus ensureing pile quality.
Accordingly, the present embodiment inserts the using method of steel reinforcement cage multiple spot dropping feeder after additionally providing drilled press-grouting pile.Please tie
Close the using method inserting steel reinforcement cage multiple spot dropping feeder referring to figs. 2 to Fig. 7 after drilled press-grouting pile, comprise the following steps:
S001: using drilling tool pore-forming, and be pumped concrete into stake holes;
S002: drilling & grouting piling is noted slotting steel reinforcement cage multiple spot dropping feeder after stake and is installed on steel reinforcement cage 10;
S003: using crane, the steel reinforcement cage 10 being provided with multiple spot dropping feeder is hung in above stake holes and be aligned spacing;
S004: using steel reinforcement cage 10 itself gravity sink segment distances after, with steel reinforcement cage 10 continuous sinking its
Suffered resistance is gradually increased, and treats that steel reinforcement cage 10 cannot rely on deadweight to continue to sink, starts medium and low frequency vibrator 40 so that steel reinforcement cage
10 body vibrations sink down into design attitude, and drive delivery bar 30 to rise using crane, deliver bar 30 end and take off from bottom circumferential lamella 62
From l steel bar 51 departs from from sleeve 52, until pulling out delivery bar 30 completely, steel reinforcement cage 10 stays design attitude, treats that concrete coagulates
Gu afterwards thus forming reinforced concrete pile.
Especially, step s002 includes the l steel bar 51 being welded on delivery bar 30 is aligned and is inserted being welded in reinforcing bar
In sleeve 52 on stirrup 131 inside cage, simultaneously so that the end delivering bar 30 is fastened on bottom circumferential lamella 63.
In sum, insert steel reinforcement cage multiple spot dropping feeder after the drilled press-grouting pile of the present invention, including being arranged at steel reinforcement cage top
Changeover panel;Match and vertically run through the delivery bar of steel reinforcement cage with changeover panel;It is arranged at the medium and low frequency vibration delivering masthead end
Device;It is respectively welded the inner side stirrup inside and outside steel reinforcement cage longitudinal reinforcement and outside stirrup;Least one set multiple spot vibrating device,
Multiple spot vibrating device includes the set on the l steel bar being welded on delivery bar and the stirrup being welded on steel reinforcement cage longitudinal reinforcement
Cylinder, l steel bar is matched with sleeve;And shoe, shoe is the framework of the circular platform type that apical ring plate, diagonal brace and bottom circumferential lamella form
Structure, the diameter with diameter greater than bottom circumferential lamella of apical ring plate, apical ring plate is welded to connect with the end of the longitudinal reinforcement of steel reinforcement cage.This brill
Inserting steel reinforcement cage multiple spot dropping feeder after the guncreting pile of hole makes the plain concrete that drilling & grouting piling notes stake obtain effective jolt ramming, is conducive to simultaneously
Sinking in the hole for grout pile containing plain concrete for the steel reinforcement cage, improves pile efficiency and pile-forming effect.And, stirrup and
The setting of multiple spot vibrating device further enhances the integral rigidity of steel reinforcement cage, reduces while improving steel reinforcement cage sinking efficiency
The possibility that steel reinforcement cage occurs bending and deformation in stake holes or damages, further increases the quality of pile.Additionally, steel reinforcement cage is last
The lower resistance steel shoe at end improves the integral rigidity of steel reinforcement cage end.Steel reinforcement cage multiple spot dropping feeder is inserted after this drilled press-grouting pile
Using method, drilling tool pore-forming first, and into stake holes be pumped concrete;Secondly insert after drilled press-grouting pile being installed on steel reinforcement cage
Steel reinforcement cage multiple spot dropping feeder;Then the steel reinforcement cage being provided with multiple spot dropping feeder is hung above stake holes and be aligned spacing;Finally first sharp
With deadweight sinking one segment distance of steel reinforcement cage, restart medium and low frequency vibrator so that steel reinforcement cage sinks down into design attitude, and adopt
Crane drives delivers bar rising until pulling out delivery bar completely, and steel reinforcement cage stays design attitude, thus forming reinforced concrete pile.
The more conventional delivering method of steel reinforcement cage body vibration of the present embodiment becomes apparent from, stake inner concrete also under the vibration of steel reinforcement cage more
Encryption is real.Steel reinforcement cage entirety uniform force, reduces the steel reinforcement cage causing because of stress raisers in steel reinforcement cage sinking watching curved
Song and damage.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, this
Any change that the those of ordinary skill in bright field does according to the disclosure above content, modification, belong to the protection of claims
Scope.