CN110485424A - Deep basal pit underground structure contrary sequence method steel pipe column positioning device and positioning construction method - Google Patents
Deep basal pit underground structure contrary sequence method steel pipe column positioning device and positioning construction method Download PDFInfo
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- CN110485424A CN110485424A CN201910864018.9A CN201910864018A CN110485424A CN 110485424 A CN110485424 A CN 110485424A CN 201910864018 A CN201910864018 A CN 201910864018A CN 110485424 A CN110485424 A CN 110485424A
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- steel pipe
- pedestal
- stake holes
- positioning
- pipe post
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 135
- 239000010959 steel Substances 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000010276 construction Methods 0.000 title claims abstract description 27
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000010412 perfusion Effects 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 238000001802 infusion Methods 0.000 claims description 31
- 238000003466 welding Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Abstract
The present invention positions technical field of construction, more particularly to deep basal pit underground structure contrary sequence method steel pipe column positioning device and positioning construction method, wherein, deep basal pit underground structure contrary sequence method steel pipe column positioning device comprising pedestal, the support frame being movably arranged on pedestal and positioning component and job platform on support frame；Deep basal pit underground structure contrary sequence method steel pipe column positioning construction method, it include bore stake holes, hang above the pedestal of positioning device to stake holes, hang in steel reinforcement cage to stake holes, hang on support frame to pedestal, steel pipe post positioning, measurement stake holes central point and mobile position platform be located at the center in third operation hole and the stake holes center of circle on same vertical line, hangs steel pipe post make steel pipe post pass through positioning device enter in stake holes, stationary positioned device and steel pipe post, concrete perfusion pile, removal positioning device into steel pipe post.Positioning operation is simple, can carry out precise positioning to steel column, meet the requirement in deep basal pit contrary sequence method to positioning.
Description
Technical field
The present invention relates to positioning technical field of construction, and in particular to deep basal pit underground structure contrary sequence method steel pipe column positioning device
And positioning construction method.
Background technique
In deep basal pit basement structure contrary sequence method, the structural column needs usually built first are constructed before excavation of foundation pit.
When structural column uses steel pipe column form, overall structure is that bottom of foundation ditch sets bored concrete pile, more than foundation pit bottom sets steel pipe post, steel
Tube column is inserted into bottom bored concrete pile about 3m.For the safety for ensuring basement structure, Counter procedure construct to the plane positioning of steel pipe column,
Vertical tolerance requirement is high, and wherein plane positioning error is no more than ± 10mm, and verticality tolerance is no more than L/300.
For the construction method of steel pipe post, generally according to site condition, stake diameter, stake be long etc., combined factors are selected, existing
Construction method mainly have a column and steel reinforcement cage integrally hangs positioning mode and full circle swinging all casing drill positioning mode, wherein column
Positioning mode is integrally hung with steel reinforcement cage and is common in the construction of foundation pit temporary support, is such as constructed for the column of permanent contrary sequence method, then
It is difficult to meet requirement of the steel pipe post as structural column to planar differential systems and verticality, and full circle swinging all casing drill is fixed
Position method is mainly for the biggish steel column of caliber (D > 1.0m), and the equipment needs hardened beforehand field to the more demanding of place
Ground, these factors make steel column positioning construction of this method for caliber no more than 1.0m, and overall economic efficiency is unobvious.
Summary of the invention
For overcome the deficiencies in the prior art, the first object of the present invention is to provide deep basal pit underground structure contrary sequence method steel pipe
Column positioning device, the positioning of the steel column suitable for caliber no more than 1.0m, positioning operation is simple, can carry out essence to steel column
Certainly position meets the requirement in deep basal pit contrary sequence method to positioning.
The second object of the present invention is to provide deep basal pit underground structure contrary sequence method steel pipe column positioning construction method, operation letter
Single, construction personnel is easily mastered.
The first object of the present invention is achieved through the following technical solutions:
Deep basal pit underground structure contrary sequence method steel pipe column positioning device comprising pedestal, the support frame being movably arranged on pedestal
And positioning component and job platform on support frame, the job platform are set to above positioning component, the positioning group
Part is movably arranged on support frame, and the first operation hole matched with stake holes diameter, the job platform are offered on the pedestal
On offer the second operation hole passed through for steel pipe post, the positioning component includes locating platform, is opened on locating platform
Third operation hole and first cover board and second cover board hinged with locating platform, first cover board and the second cover board difference
The two opposite sides in third operation hole are articulated with, first cover board is equipped with the first notch close to the side of the second cover board, described
Second cover board is equipped with the second notch close to the side of the first cover board, when first cover board and the second cover plate lid set third operation hole
When, first notch and the second notch constitute the location hole to match with steel pipe post diameter.
The second object of the present invention is achieved through the following technical solutions:
Deep basal pit underground structure contrary sequence method steel pipe column positioning construction method comprising following steps:
Step 1: boring stake holes；
Step 2: hanging above pedestal to the stake holes of positioning device；
Step 3: hanging in steel reinforcement cage to stake holes；
Step 4: hanging on support frame to pedestal；
Step 5: steel pipe post positions, measurement stake holes central point and mobile position platform make the center in third operation hole with
The stake holes center of circle is located on same vertical line；
It is entered in stake holes Step 6: hanging steel pipe post and steel pipe post being made to pass through positioning device；
Step 7: stationary positioned device and steel pipe post；
Step 8: the concrete perfusion pile into steel pipe post；
Step 9: removing positioning device.
Wherein, it in step 2, before hanging the pedestal, first arranges and is compacted the place around stake holes, then by the bottom
Seat is hung to the stake holes, and the center of circle at the center and stake holes that make the first operation hole of pedestal is on same vertical line.
Wherein, in step 4, after the pedestal of support frame as described above is placed on pedestal, measure and adjust the pedestal of support frame
Position, so that the pedestal of support frame is in horizontality.
Wherein, in step 6, before steel pipe post is hung stake holes, the first cover board and second on locating platform is first opened
Cover board, the then successively designed elevation out of the first operation hole, third operation hole and the second operation Kong Fangzhi stake holes by steel pipe post
Position, be then switched off the first cover board and the second cover board, and examine horizontal position and the vertical elevation of steel pipe post.
Wherein, in step 7, using the method for multi-point welding respectively to the locating platform and support frame, support frame and bottom
Seat and steel pipe post and locating platform are fixed.
Wherein, in step 8, before mixed mud is perfused, first perfusion conduit is hung on job platform, conduit then will be perfused
It is downwardly into steel pipe post and stake holes, then hangs infusion funnel to being perfused on conduit and connecting with perfusion conduit upper end, most
Afterwards again to infusion funnel and delivering concrete in perfusion conduit.
Wherein, it after installing perfusion conduit and infusion funnel, first installs in infusion funnel for blocking infusion funnel discharge gate
Cover board after then the mixed mud amount into infusion funnel in delivering concrete to infusion funnel meets first watering requirement, then removes cover board and makes
Concrete in infusion funnel is poured into stake holes by the way that conduit is perfused, and is completed concrete first watering, is removed infusion funnel, into perfusion conduit
Delivering concrete is until complete the filling concrete in steel pipe post.
Wherein, after completing concrete first watering, first stop perfusion 3.5-4.5h, then the concrete carried out in steel pipe post fills
Note.
Wherein, in step 8, after completing concrete first watering, the coagulation of 2.5-3.5m length is often perfused into steel pipe post
After soil, to rubble is backfilled between steel pipe post and the hole wall of stake holes, the rubble is gradation stone of the partial size in 2-4cm.
The beneficial effects of the present invention are:
The positioning device is equipped with pedestal, and a stable basis can be provided for the support frame on top, so that entire support
The placement of frame more safety and stability, and can adapt to various unfavorable places；The small volume of the positioning device, self weight compared with
Gently, lifting transfer can be carried out using crane in construction field, facilitates and positioning device is shifted；
The present invention provides deep basal pit underground structure contrary sequence method steel pipe column positioning device and construction method, and it is little to be suitable for caliber
In the positioning of the steel column of 1.0m, positioning operation is simple, can carry out precise positioning to steel column, meet in deep basal pit contrary sequence method
Requirement to positioning, plane positioning error are no more than ± 10mm, and verticality tolerance is no more than L/300.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of pedestal of the invention；
Fig. 3 is construction process figure of the invention.
Description of symbols: 1, pedestal；11, the first operation hole；2, support frame；21, pedestal；22, column；23, bracket；
24, crossbeam；25, reinforcing rod；26, cant beam；31, locating platform；32, third operation hole；33, the first cover board；331, the first notch；
34, the second cover board；341, the second notch；4, job platform；41, the second operation hole；5, hinge；6, handle is pulled；7, ladder；8,
Guardrail.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, being related in patent
All connection/connection relationships, not singly refer to that component directly connects, and refer to can according to specific implementation situation, by addition or
Reduce couple auxiliary, Lai Zucheng more preferably coupling structure.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1
Deep basal pit underground structure contrary sequence method steel pipe column positioning device, as shown in Figure 1 comprising the pedestal 1 of rectangle, activity are set
In the support frame 2 on pedestal 1 and the job platform 4 of the positioning component on support frame 2 and rectangle.The job platform 4
Above positioning component, the positioning component is movably arranged on support frame 2.
Wherein, as shown in Fig. 2, offering the first operation hole 11 matched with stake holes diameter on the pedestal 1.Specifically
, in order to facilitate processing, first operation hole 11 is square hole, and the side length in first operation hole 11 is equal or slightly larger than
The diameter of stake holes.
When specific works, operating personnel is first smooth by the surface management around stake holes, then places pedestal 1 in range
Ground compacting, is finally sling pedestal 1 and is hung pedestal 1 to stake hole location, and make the first operation hole of pedestal 1 using crane
11 central point is overlapped with the center of circle of stake holes, and the Primary Location for completing pedestal 1 hangs steel reinforcement cage then according to the absolute altitude of design
It puts to stake holes.
Wherein, the rectangular susceptor 21 of support frame as described above 2 including bottom, lower end be fixed at respectively rectangular susceptor 21 4 it is straight
Four columns 22 at angle and two T-shape brackets 23 for being separately connected 21 two opposite sides side of rectangular susceptor, four columns
22 upper end connection operation platform 4, the positioning component are set on two brackets 23.
Specifically, the length and width of the pedestal 21 are equal with the length and width of pedestal 1, bracket 23 include both ends respectively with adjacent two
Crossbeam 24 and both ends that column 22 is fixedly connected are separately connected the vertical reinforcing rod 25 of crossbeam 24 and pedestal 21, the positioning group
Part is movably arranged on crossbeam 24.
When specific works, support frame 2 is hung to pedestal 1 using crane, and make 21 surrounding of pedestal of support frame 2 with
The surrounding of pedestal 1, which is aligned, places, and then uses the levelness of level measurement support frame 2, and line position of going forward side by side, which sets adjustment, makes the support frame 2 be in
Horizontality.When adjustment, can according to the measurement result of level meter between 2 pedestal 21 of support frame and pedestal 1 corresponding position
Sandy soil or mixed mud are padded, it is 2 position of support frame is lower ground just padded as needed that support frame 2 is made finally to be in a horizontal state, have
Conducive to the subsequent setting accuracy to steel pipe post 22 of raising.The setting of reinforcing rod 25 is conducive to improve overall structural strength, make
Positioning component is not susceptible to shake when positioning steel pipe post 22, improves positioning accuracy.
It is also wrapped to further increase the integral strength of support frame 2 and the stability of job platform 4, support frame as described above 2
The cant beam 26 that both ends are separately connected job platform 4 and column 22 is included, the cant beam 26, job platform 4 and column 22 enclose three
Angular, triangular structure is more stable, is more conducive to improving the stability of job platform 4.
Wherein, the second operation hole 41 passed through for steel pipe post 22 is offered on the job platform 4, specifically, for side
Just it processes, second operation hole 41 is square hole, and the side length in second operation hole 41 is greater than the straight of steel pipe post 22
Diameter facilitates staff to position and observe steel pipe post 22.
Wherein, the positioning component includes the locating platform 31 being movably arranged on bracket 23, is opened on locating platform 31
Third operation hole 32 and first cover board 33 and second cover board 34 hinged with locating platform 31, first cover board 33 and the
Two cover boards 34 are hingedly connected to the two opposite sides in third operation hole 32, and first cover board 33 is close to the side of the second cover board 34
Equipped with the first notch 331, second cover board 34 is equipped with the second notch 341 close to the side of the first cover board 33, when described first
Cover board 33 and the second cover board 34 lid be when setting third operation hole 32, first notch 331 and the second notch 341 constitutes and steel pipe
The location hole that 22 diameter of column matches.
When specific works, first positioning to steel pipe post 22, staff pass through staff on job platform 4
Total station prism measures the central point of steel pipe post 22, and the position of locating platform 31 is then adjusted according to measurement result, makes to position
The central point in the third operation hole 32 on platform 31 is overlapped with the central point of steel pipe post 22, on same vertical line, is completed
The positioning work of steel pipe post 22.Then the first cover board 33 and the second cover board 34 are opened, then uses crane by steel pipe post 22
It hangs to the top of support frame 2, and transfers steel pipe post 22, the lower end of steel pipe post 22 is made to sequentially pass through the second operation hole 41, the
Enter in the steel reinforcement cage in stake holes behind three operation holes 32 and the first operation hole 11, makes the decentralization of steel pipe post 22 to designed elevation, most
After close the first cover board 33 and the second cover board 34, since the first notch 331 and the second notch 341 are constituted and 22 diameter of steel pipe post
The location hole to match, therefore, the first cover board 33 and the second cover board 34 abut steel pipe close to the side wall of steel pipe post 22 and stand at this time
Column 22 makes steel pipe post 22 be not susceptible to tilt.After steel pipe post 22 is accurate in place, positioning component when to ensure subsequent operation
It is not displaced with support frame 2, locating platform 31 and crossbeam 24 is welded and fixed, while by 21 He of the pedestal of support frame 2
Pedestal 1 is welded and fixed, and for convenience of later separation locating platform 31 and support frame 2 and pedestal 21 and pedestal 1, welding manner is used
Multiple spot is fixedly welded method, and bonding area is smaller, easy to disassemble, and the device be used for multiple times can as needed, saves
Cost.
Specifically, first cover board 33 and the second cover board 34 are detachably connected by hinge 5 with locating platform 31.It closes
5 connection types of page are detachably connected the first cover board 33 and the second cover board 34 with locating platform 31 respectively, and staff can root
According to steel pipe post 22 diameter design have different-diameter size the first notch 331 the first cover board 33, and with the first cover board
33 the second symmetrical cover boards 34 can be by hinge 5 by different size when the steel pipe post 22 to different-diameter positions
The first cover board 33 and the second cover board 34 replaced, make the device can be adapted for carrying out the steel pipe post 22 of multiple diameter
Positioning, the scope of application are wider.
Further, the first cover board 33 and the second cover board 34, first lid are opened or replaced for the ease of staff
The upper surface of plate 33 and the second cover board 34, which is equipped with, pulls handle 6.
Further, in order to facilitate job platform 4 above and below staff, support frame as described above 2 is equipped with ladder 7, the ladder 7
It is arranged from the bottom of support frame 2 to job platform 4.
In order to improve the safety of the device, the safety of staff is protected, effectively avoids staff from job platform 4
On fall, the job platform 4 be equipped with guardrail 8, the guardrail 8 is circumferentially arranged along 4 side of job platform, the shield
Column 8 is equipped with the channel for job platform 4 above and below operating personnel close to the side of ladder 7.
Specifically, the height of the guardrail 8 is greater than 1.2m, it is more advantageous to the safety for improving the device.
Embodiment 2
Deep basal pit underground structure contrary sequence method steel pipe column positioning construction method, as shown in figure 3, it includes the following steps:
Step 1: boring stake holes；
Step 2: hanging above pedestal 1 to the stake holes of positioning device；
Step 3: hanging in steel reinforcement cage to stake holes；
Step 4: hanging on support frame 2 to pedestal 1；
Step 5: steel pipe post 22 positions, simultaneously mobile position platform 31 makes third operation hole 32 to measurement stake holes central point
Center and the stake holes center of circle are located on same vertical line；
It is entered in stake holes Step 6: hanging steel pipe post 22 and steel pipe post 22 being made to pass through positioning device；
Step 7: stationary positioned device and steel pipe post 22；
Step 8: the concrete perfusion pile into steel pipe post 22；
Step 9: removing positioning device.
Wherein, the concrete operations of step 1 are as follows: by the central point of the survey engineer measurement stake position of profession, then using rotation
It digs drilling machine and bores stake holes.Specifically, soil layer uses drilling pipe, rock stratum uses bit drill, and uses mud off.It is set when stake holes reaches
After counting absolute altitude, slag drill bit fishing slag borehole cleaning is drawn using rotary digging to stake holes.
Wherein, the concrete operations of step 2 are as follows: before hanging the pedestal 1, first arrange and be compacted the place around stake holes, so
The pedestal 1 is hung to the stake holes using crane afterwards, makes the center in the first operation hole 11 of pedestal 1 and the center of circle of stake holes
On same vertical line or it is overlapped.
Wherein, the concrete operations of step 3 are as follows: steel reinforcement cage is hung to hole for grout pile with crane, and presses designed elevation
Position of sound production, and steel reinforcement cage is fixed on corresponding height and position in stake holes opening setting hangs muscle, when avoiding placing concrete
Steel reinforcement cage shakes or is displaced, and influences the accuracy of steel pipe post 22.
Wherein, the concrete operations of step 4 are as follows: hung the pedestal 21 of support frame as described above 2 using crane enterprising to pedestal 1
Row is placed, and the surrounding of the pedestal 21 of support frame 2 is aligned by when placement with the surrounding of pedestal 1, then with level measurement support base
Pedestal 21 levelness, and adjust the position of the pedestal 21 of support frame 2, so that the pedestal 21 of support frame 2 is in horizontality, have
Conducive to the location accuracy for improving positioning device, so that positioning device is carried out precise positioning to steel column 22, it is inverse to meet deep basal pit
To the requirement of positioning in the practice.
Wherein, the concrete operations of step 5 are as follows:
(1) in-site measurement engineer erects total station prism on the operational platform, and 22 central point of column carries out setting-out,
Total station prism upright bar point is 22 central point of column, then total station prism is kept not move, using vertical thin bar by whole station
Instrument prism upright bar point coordinate guides to adjustable locating platform 31, finally with the third operation hole 32 of tape measure locating platform 31
Central point is at a distance from vertical thin bar pilot point；
(2) according to tape measure as a result, movement is adjusted to corresponding position in locating platform 31, so that third is made
The central point in industry hole 32 is overlapped with vertical thin bar pilot point, and central point and the stake holes center of circle in the hole of third operation at this time 32 are located at same
On vertical line, the positioning to steel pipe post 22 is completed.
Wherein, the concrete operations of step 6 are as follows: after the completion of the positioning work of step 5, first open on locating platform 31
Then steel pipe post 22 is hung to above positioning device using crane, then founds steel pipe by the first cover board 33 and the second cover board 34
Column 22 is successively put from the first operation hole 11, third operation hole 32 and the second operation hole 41 to the position of designed elevation in stake holes, is hung
It when putting, if special messenger carries out floor manager, slowly operates, and in accurate tripping in hole, is then switched off the first cover board 33 and the second cover board
34, finally examine the verticality and levelness of steel pipe post 22 respectively with horizontal ruler.When the horizontal position of steel pipe post 22 and perpendicular
To absolute altitude not the positioning requirements of composite steps five when, according to the anchor point of the steel pipe post 22 of step 5 measurement, it is vertical to adjust steel pipe
The horizontal position of column 22 and vertical elevation.Horizontal ruler bubble specifically can be used to measure between two parties, rotation steel pipe can be used in plan-position
Column 22 carries out the adjusting of horizontal position, and the adjusting of verticality can be corrected by ironware.
Wherein, the concrete operations of step 7 are as follows: using the method for multi-point welding, to the locating platform 31 and support frame 2
On crossbeam 24 be fixed, the pedestal 21 and pedestal 1 of support frame 2 are fixed, on locating platform 31 in order to adjust steel
The verticality of tube column 22 and the ironware wedged is fixed, above-mentioned ironware and steel pipe post 22 and locating platform 31 are welded
Connect fixation.It may insure the phenomenon that steel pipe post 22 will not be displaced when subsequent operation, improve the positioning to steel pipe post 22
Precision makes steel pipe post 22 meet the requirement in deep basal pit contrary sequence method to positioning.
Wherein, the concrete operations of step 8 are as follows:
A, conduit, infusion funnel are placed；
The perfusion pinch plate that conduit is perfused is hung on job platform 4 using crane, and covers the second work for setting job platform 4
Industry hole 41, specifically, pinch plate makes to be not easy to send out after being perfused in conduit insertion steel pipe post 22 and stake holes for clamping perfusion conduit
Raw inclination or phenomenon of collapsing, it is ensured that smooth concrete perfusion.
Then it is hung on job platform 4 using crane by conduit is perfused, perfusion conduit is then downwardly into steel pipe post
22 and stake holes in, keep perfusion conduit vertical and connection sealing.After conduit decentralization is perfused in place, infusion funnel is hung to filling
It is connect on note conduit and with perfusion conduit upper end.After the installation is completed, crane keeps infusion funnel to lift by crane state at this time, when avoiding blanking
Concrete impacts infusion funnel and influences, and guarantees the safety and stability of infusion funnel.
B, 22 concrete perfusion pile of steel pipe post:
After installing perfusion conduit and infusion funnel, the cover board for blocking infusion funnel discharge gate is first installed in infusion funnel,
Then wet perfusion conduit and infusion funnel are rinsed with water, it is smooth when so as to concrete perfusion, then using concrete day pump truck to
After mixed mud amount in infusion funnel in delivering concrete to infusion funnel meets first watering requirement, then remove cover board make it is mixed in infusion funnel
Solidifying soil is poured into stake holes by the way that conduit is perfused, and stake holes mouth mud overflows, and completes concrete first watering.Stop perfusion 4 hours, then
Infusion funnel hung using crane and is opened except infusion funnel, with concrete day pump line directly into perfusion conduit delivering concrete until complete
At the filling concrete in steel pipe post 22.When perfusion, while penetration concrete, while gradually promoted conduit (guarantee conduit lower end begin
Eventually in concrete), it is removed when concrete surface reaches design height, then by last conduit.
Wherein, it since there are gaps between steel pipe post 22 and hole wall, during concrete perfusion, or is being perfused
The movement of steel pipe post 22 is be easy to cause after.It therefore, is the verticality for ensuring steel pipe post 22, after completing concrete first watering,
After the concrete of 3m length is often perfused into steel pipe post 22, rubble is backfilled between steel pipe post 22 and the hole wall of stake holes, institute
Stating rubble is gradation stone of the partial size in 2-4cm.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. deep basal pit underground structure contrary sequence method steel pipe column positioning device, it is characterised in that: including pedestal, be movably arranged on pedestal
Support frame and positioning component and job platform on support frame, the job platform is set to above positioning component, described
Positioning component is movably arranged on support frame, and the first operation hole matched with stake holes diameter, the work are offered on the pedestal
The the second operation hole passed through for steel pipe post is offered on industry platform, the positioning component includes locating platform, is opened in positioning
Third operation hole and first cover board and second cover board hinged with locating platform on platform, first cover board and the second lid
Plate is hingedly connected to the two opposite sides in third operation hole, and first cover board is equipped with first close to the side of the second cover board and lacks
Mouthful, second cover board is equipped with the second notch close to the side of the first cover board, when first cover board and the second cover plate lid set the
When three operation holes, first notch and the second notch constitute the location hole to match with steel pipe post diameter.
2. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method, characterized by the following steps:
Step 1: boring stake holes；
Step 2: hanging above pedestal to the stake holes of positioning device；
Step 3: hanging in steel reinforcement cage to stake holes；
Step 4: hanging on support frame to pedestal；
Step 5: steel pipe post positioning, measurement stake holes central point and mobile position platform make center and the stake holes in third operation hole
The center of circle is located on same vertical line；
It is entered in stake holes Step 6: hanging steel pipe post and steel pipe post being made to pass through positioning device；
Step 7: stationary positioned device and steel pipe post；
Step 8: the concrete perfusion pile into steel pipe post；
Step 9: removing positioning device.
3. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 2, it is characterised in that: step
In rapid two, before hanging the pedestal, first arranges and be compacted the place around stake holes, then hang the pedestal to the stake holes
Place, the center of circle at the center and stake holes that make the first operation hole of pedestal is on same vertical line.
4. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 2, it is characterised in that: step
In rapid four, after the pedestal of support frame as described above is placed on pedestal, the position of the pedestal of support frame is measured and adjusted, support frame is made
Pedestal be in horizontality.
5. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 2, it is characterised in that: step
In rapid six, before steel pipe post is hung stake holes, the first cover board and the second cover board on locating platform are first opened, then by steel pipe
Column successively out of the first operation hole, third operation hole and the second operation Kong Fangzhi stake holes designed elevation position, be then switched off
First cover board and the second cover board, and examine horizontal position and the vertical elevation of steel pipe post.
6. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 2, it is characterised in that: step
In rapid seven, using the method for multi-point welding respectively to the locating platform and support frame, support frame and pedestal and steel pipe post
It is fixed with locating platform.
7. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 2, it is characterised in that: step
In rapid eight, before mixed mud is perfused, first perfusion conduit is hung on job platform, perfusion conduit is then downwardly into steel pipe post
In stake holes, then infusion funnel is hung to being perfused on conduit and connecting with perfusion conduit upper end, finally again to infusion funnel and filling
Infuse delivering concrete in conduit.
8. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 7, it is characterised in that: peace
After installing perfusion conduit and infusion funnel, the cover board for blocking infusion funnel discharge gate is first installed in infusion funnel, then to perfusion
After mixed mud amount in struggling against in delivering concrete to infusion funnel meets first watering requirement, then removes cover board and make concrete in infusion funnel
It is poured into stake holes by the way that conduit is perfused, completes concrete first watering, remove infusion funnel, delivering concrete is until complete into perfusion conduit
At the filling concrete in steel pipe post.
9. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 8, it is characterised in that: complete
After concrete first watering, first stop perfusion 3.5-4.5h, then carry out the filling concrete in steel pipe post.
10. deep basal pit underground structure contrary sequence method steel pipe column positioning construction method according to claim 8, it is characterised in that:
In step 8, after completing concrete first watering, after the concrete of 2.5-3.5m length is often perfused into steel pipe post, to steel pipe post
Rubble is backfilled between the hole wall of stake holes, the rubble is gradation stone of the partial size in 2-4cm.
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