CN106436689A - Bearing platform steel plate pile support and steel plate pile serving bearing platform template construction method - Google Patents
Bearing platform steel plate pile support and steel plate pile serving bearing platform template construction method Download PDFInfo
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- CN106436689A CN106436689A CN201610870183.1A CN201610870183A CN106436689A CN 106436689 A CN106436689 A CN 106436689A CN 201610870183 A CN201610870183 A CN 201610870183A CN 106436689 A CN106436689 A CN 106436689A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 90
- 239000010959 steel Substances 0.000 title claims abstract description 90
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 238000009412 basement excavation Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 239000004576 sand Substances 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 241000521257 Hydrops Species 0.000 claims description 3
- 206010030113 Oedema Diseases 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a bearing platform steel plate pile support and steel plate pile serving bearing platform template. A method comprises the steps of: 1) staking out in survey; 2) old road excavation; 3) arrangement of a guide frame; 4) insertion of steel plate piles; 5) excavation of bearing platform soil for the first time; 6) arrangement of surrounding purlins and supports; 7) excavation of the bearing platform soil for the second time; 8) drilling away of pile heads and detection of pile foundations; 9) casting of concrete cushion layers; 10) building of bearing platform templates; 11) binding of bearing platform reinforcements and arrangement of pier column reinforcements; 12) arrangement of isolation layers; 13) casting of bearing platform pier column concrete; 14) dismounting of the supports, the surrounding purlins and the steel plate piles; and 15) treatment of the drawing places of the steel plate piles. The bearing platform steel plate pile support and steel plate pile serving bearing platform template guarantees the structural and personal safety in construction, guarantees normal use and safety of buildings, underground pipelines and roads around foundation pits, accelerates the construction progress, guarantees the construction period target realization, reduces the workload of soil excavation, accumulation and transportation, protects surrounding environments, and reduces the fly dust influence.
Description
Technical field
The present invention relates to a kind of overpass construction method, more particularly, to a kind of cushion cap steel sheet pile supporting and steel sheet pile are simultaneous
Make cushion cap template.
Background technology
In elevated bridge construction, the construction quality of cushion cap often cannot be guaranteed, and often destroy periphery construction and build
Thing, underground utilities, the normal of road use and safety, and the road that is connected with it can be subject to the inconvenience of moving traffic；In cushion cap
During construction, the workload of earth excavation, stacking and transport, protection and the dust controlling of surrounding enviroment can be affected, also can be because of mistake
The hidden danger of quality of heavy excavation backfill uses the impact of quality to recovering old road；Conventional arrangement and method for construction digging up and filling in roll less than
Position, can lead to the uneven sedimentation in road surface, delay construction speed, thus have impact on the realization of constructing aims；In sum, pin
To disadvantages mentioned above present in prior art, invention proposes a kind of cushion cap steel sheet pile supporting and steel sheet pile doubles as cushion cap template.
Content of the invention
The present invention employed technical scheme comprise that a kind of cushion cap steel sheet pile supporting of offer and steel for solving above-mentioned technical problem
Sheet pile doubles as cushion cap template, wherein,
（One）Surveying and locating
According to the four angular coordinate calculating cushion cap side and adding 10cm, released with total powerstation and mark the steel sheet pile position line behind four angle point positions；
（Two）The old road of steel sheet pile insert division is excavated
Routing at steel sheet pile position, then abolishes old road face with cutting machine along after wire cutting；
（Three）Set up steel sheet pile insertion leading truck
Prevent the bending deformation of steel sheet pile and the penetration capability improving stake, certain rigidity, firm leading truck are set；
（Four）Inserting piling steel sheet pile is to designed elevation
Vibration hammer injection is joined using digging machine；
（Five）First time cushion cap earth excavation
Cut the earth in steel sheet pile to enclosing at the absolute altitude of purlin bottom with digging machine；
（Six）Set up and enclose purlin and support
In earth excavation to after enclose purlin bottom absolute altitude, steel sheet pile is then hung in crane by design quantity welding bracket and encloses purlin and put
Put on bracket and weld；Purlin welding consolidation, last welding reinforcement angle steel in the angle of cut at the angle of cut then will be enclosed；
（Seven）Second cushion cap earth excavation
Enclosing after the completion of purlin supports and set up, after being excavated at substrate 20cm absolute altitude with digging machine, finally using manually digging clearly to setting
Meter foundation ditch bottom absolute altitude；
（Eight）Cut pile crown, pile measurement
Cushion cap excavation of foundation pit put in place after in time establishment officer carry out pile crown with equipment and abolish, pile crown concrete is cut using air compressor machine；
（Nine）Pour concrete bed course
Cushion cap bed course adopts 10cm thickness C15 concreting, and the every hem width of bed course goes out cushion cap 10cm；
（Ten）Cushion cap template is set up
Size according to cushion cap is previously placed in the surrounding of foundation ditch using bamboo slab rubber；
（11）Cushion cap reinforcing bar binding and pier stud reinforcing bar are set up
After cushion cap blinding concrete reaches the 70% of design strength, you can carry out cushion cap reinforcing bar binding；
（12）Template adjustment is reinforced
Reinforcement installation puts in place, colligation protective layer cushion block outside cushion cap facade reinforcing bar, then by mobile for the bamboo slab rubber of reinforcing bar surrounding patch
To cushion block of concrete bar protective layer；Outside bamboo slab rubber, backfill medium coarse sand is at cushion cap 2/3；Reinforced using the lumps of wood on top；
（13）Set up sealing coat
Inside steel sheet pile, cushion cap position disposes division board；
（14）Pour cushion cap pier stud concrete
Placement layer by layer, thickness is less than 30cm, is vibrated using immersion vibrator, 5～10 in vibrator insertion lower-layer concrete
Cm is it is ensured that the good combination of levels concrete；
（15）Remove and support, enclose purlin and steel sheet pile
After cushion cap concrete placings, after pier stud pours and completes form removal, carry out foundation ditch backfill, pull out steel sheet pile；
（16）Steel sheet pile pulls out the process at place
Backfilled using medium coarse sand, that is, pier stud concrete placings complete, after Pier Formwork, pier stud construction scaffolding are removed, by steel plate
Space medium coarse sand between stake and cushion cap fills up；Pull out the principle of vibration by layer of sand vibration compacting using steel sheet pile, adopt simultaneously
With the mode of water filling it is ensured that sand moistening, by sand surface, hydrops are not defined；Cushion cap is backfilled using plain soil, using digging machine
Layering leveling compacting.
Above-mentioned automatically controls track wheel type mobile job platform construction method, and wherein, in described step 3, leading truck is adopted
Use single-layer double-side form, by nose girder with enclose purlin stake etc. and form.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, enclose the spacing generally 2.5 of purlin stake～
3.5 meters, the two-sided spacing enclosed between purlin is unsuitable excessive, from the point of view of protective layer thickness big 8 slightly than sheet pile wall thickness～
10mm.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, in described step 4, before piling,
Grease in the fore shaft of sheet pile, is squeezed into facilitating and extracts.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, in described step 6, encloses purlin and props up
Support is all using H400 shaped steel.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, in described step 8, controls foundation pile stake top
Elevation exceeds cushion cap bottom surface 10cm, when pile crown will dig and put in place, reduces broken pile dynamics, it is to avoid the coming off of mass concrete, with
Prevent from destroying protective layer and pile body.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, in described step 12, cushion block number
Amount is no less than 5 pieces of settings by every square meter；The lumps of wood a size of 100*50mm.
Above-mentioned automatically controls track wheel type mobile job platform construction method, wherein, in described step 13, division board
Thick for 12mm.
The present invention has the advantages that with respect to prior art：
1）Structure in guaranteeing to construct and personal safety；
2）Ensure that foundation ditch periphery construction of structures, underground utilities, the normal of road use and safety；
3）Be conducive to maintaining 204 national highway moving traffics and builder's road traffic, it is to avoid because slope excavates the traffic causing and construction
The scope of operation is not enough；
4）Be conducive to by science organization's parallel line production, accelerating construction progress is it is ensured that the realization of constructing aims；
5）The workload of earth excavation, stacking and transport, protection surrounding enviroment, minimizing airborne dust impact can be reduced；
6）Excavated surface can be reduced to greatest extent, avoid the hidden danger of quality of excessive digging up and filling in the use product recovering old road
The impact of matter, can also avoid conventional construction scheme to roll using digging up and filling in simultaneously and not in place lead to uneven heavy in road surface
Fall.
Specific embodiment
（One）Surveying and locating
According to the four angular coordinate calculating cushion cap side and adding 10cm, released with total powerstation and mark the steel sheet pile position line behind four angle point positions；
（Two）The old road of steel sheet pile insert division is excavated
Routing at steel sheet pile position, then abolishes old road face with cutting machine along after wire cutting；
（Three）Set up steel sheet pile insertion leading truck
For ensureing vertical, the bending deformation squeezed into precision, prevent steel sheet pile of control stake of the correct of pile sinking axial location and stake
With the penetration capability improving stake, certain rigidity, firm leading truck are set；
Leading truck adopts single-layer double-side form, by nose girder with enclose purlin stake etc. and form, encloses generally 2.5～3.5 meters of the spacing of purlin stake,
The two-sided spacing enclosed between purlin is unsuitable excessive, from the point of view of protective layer thickness slightly than sheet pile wall thickness big 8～10mm；
Install leading truck when it should be noted that following some：Controlled using total powerstation and level indicator and adjust the position of nose girder；Nose girder
Highly suitable, to be conducive to controlling the construction height of steel sheet pile and improve construction efficiency；Nose girder can not beating with steel sheet pile
And if producing sinking and deform；The position of nose girder should accurately can not be collided with steel sheet pile；
（Four）Inserting piling steel sheet pile is to designed elevation
Vibration hammer injection is joined using digging machine, the situation of underground utilities, underground structure before injection, must be found out, it is to avoid damage；
Before piling, to steel sheet pile by root inspection, reject and connect fore shaft corrosion, deform serious steel sheet pile, failure is to be trimmed
After can use；
Before piling, grease in the fore shaft of sheet pile, squeezed into facilitating and extract；
During inserting piling, measurement at any time monitors the gradient of every pile less than 0.3%, can not be adjusted with pulling together method when deflection is excessive
Timing, pulls up and beats again；
（Five）First time cushion cap earth excavation
Foundation ditch shoveling replaces cooperation with the setting enclosing purlin support and carries out：First step digging machine cut the earth in steel sheet pile to enclose purlin bottom mark
Eminence；
（Six）Set up and enclose purlin and support
Enclose purlin and support all using H400 shaped steel.Construction plan according to Design of Construction Organization and this special scheme and equipment investment
And the model size of cushion cap outside the venue patterning process support bracket, enclose purlin, angle brace；
In earth excavation to after enclose purlin bottom absolute altitude, steel sheet pile is then hung in crane by design quantity welding bracket and encloses purlin and put
Put on bracket and weld；Purlin welding consolidation, last welding reinforcement angle steel in the angle of cut at the angle of cut then will be enclosed；
（Seven）Second cushion cap earth excavation
Enclosing after the completion of purlin supports and set up, after being excavated at substrate 20cm absolute altitude with digging machine, finally using manually digging clearly to setting
Meter foundation ditch bottom absolute altitude；With closed muck haulage car with digging with transporting outside construction site during earth excavation；
（Eight）Cut pile crown, pile measurement
Cushion cap excavation of foundation pit put in place after in time establishment officer carry out pile crown with equipment and abolish, pile crown coagulation is cut using air compressor machine
Soil.In work progress, note controlling foundation pile height of pile top to exceed cushion cap bottom surface 10cm；When pile crown will dig and put in place, reduce broken
Stake dynamics, it is to avoid the coming off of mass concrete, to prevent from destroying protective layer and pile body；
Pile crown cuts after putting in place, stake top loose concrete is all cut, removing surface is clean；As stake top absolute altitude is less than design mark
Gao Shi, must be connected to designed elevation with ad eundem concrete；
By design requirement, pile quality is detected, carries out the setting-out of stake position, measure deflected file amount, qualified after can carry out
Next procedure is constructed；
（Nine）Pour concrete bed course
Cushion cap bed course adopts 10cm thickness C15 concreting, and the every hem width of bed course goes out cushion cap 10cm；Carry out setting-out before construction, determine
Bed course plan-position and absolute altitude, prevent from exceeding cushion cap bottom absolute altitude and enter inside cushion cap；
After the leveling compacting of foundation ditch bottom, pour 10cm thickness C15 concrete cushion, vibration compacting, control bed course top mark high and smooth
Degree；
（Ten）Cushion cap template is set up
After cushion cap pit earthwork excavates, soil on labor cleaning's steel sheet pile, the size according to cushion cap adopts 12cm bamboo slab rubber
It is previously placed in the surrounding of foundation ditch；Adopt batten by piece fixation outside bamboo slab rubber, make the template of unilateral cushion cap form entirety；
（11）Cushion cap reinforcing bar binding and pier stud reinforcing bar are set up
After cushion cap blinding concrete reaches the 70% of design strength, you can carry out cushion cap reinforcing bar binding；Clean mat surface, in pad
On layer, four angle points of cushion cap are released in measurement, recover cushion cap sideline；By pile crown reinforcing bar eliminate rust, conditioning straight and curved to design angle,
Ensure that pile crown reinforcement location is accurate；
Cushion cap reinforcing bar is concentrated in processing space and is made, and is tied up according to design drawing and relevant code requirement after being transported to job site
Prick；Reinforcement construction order is：Cushion cap bottom layer of the reinforcing steel → cushion cap cableway → cushion cap side reinforcing bar → cushion cap top layer reinforcing bar → pier
Body embedded bar；
（12）Template adjustment is reinforced
Reinforcement installation puts in place, colligation protective layer cushion block outside cushion cap facade reinforcing bar, and cushion block quantity is set no less than 5 pieces by every square meter
Put, the then bamboo slab rubber movement of just reinforcing bar surrounding is labelled on cushion block of concrete bar protective layer；Outside bamboo slab rubber, backfill medium coarse sand arrives
At cushion cap 2/3, i.e. 1.2m position；Reinforced it is ensured that the physical dimension of cushion cap and reinforcing bar using the 100*50mm lumps of wood on top
Protective layer cushion block liner is firm；
（13）Set up sealing coat
Inside steel sheet pile, cushion cap position disposes 12mm thickness division board；
（14）Pour cushion cap pier stud concrete
Concrete, by blending station centralized mixing, strictly controls match ratio, carries out mix-proportion adjustment according to sandstone water content, when temperature is low
The slump take off value, temperature high when the slump take value；
Concrete is transported to scene, concrete mixer cloth, placement layer by layer by agitator truck, and thickness is less than 30cm；Using
Immersion vibrator vibrates, and in vibrator insertion lower-layer concrete, 5～10 cm are it is ensured that the good combination of levels concrete；Mixed
The mark of solidifying soil vibration compacting is that concrete stops sinking, effervescent, bleeding, surface be not flat；
After concreting is complete, cushion cap top of concrete is carried out repair, floating, smear again second time after due-in slurry and press polish at
Reason, is processed with pier stud binding site dabbing；
（15）Remove and support, enclose purlin and steel sheet pile
After cushion cap concrete placings, after pier stud pours and completes form removal, carry out foundation ditch backfill, pull out steel sheet pile；Before pulling out sheet pile, clearly
The process in native hole after the method for pile pulling, order and pile pulling；Can not be because of the vibration effect of pile pulling, and pile pulling band soil excessively causes ground
Face, the sedimentation closing on inhering architecture, structures or beneath pipeline and displacement；
（16）Steel sheet pile pulls out the process at place
1st, the relevant process during pile pulling
Steel sheet pile beat pull out during disturbance can be produced to the periphery soil body, according to engineering characteristic, structural relation and postorder construction will
Ask, make considered below：
1. cushion cap occupies the part road surface of existing road, for ensureing that can recover original path after bearing platform construction uses function；
2. original path has still maintained traffic, and steel sheet pile pulls out about 1.5 meters of upright high slopes of rear cushion cap foundation ditch under Vehicular vibration
Stability requirement；
3. need to recover at cushion cap foundation ditch banket to planting technique and bridge capping construction support stability requirement；
2nd, pile extracting method
This technology pile pulling adopts vibration hammer pile pulling：The forced vibration being produced using vibration hammer, disturbance soil property, destroy soil around sheet pile
Cohesive strength to overcome pile extraction resistance, rely on the effect of additional lifting force to pull out stake；
3rd, cushion cap Foundation treatment
1. the following Foundation treatment of cushion cap top surface
Backfilled using medium coarse sand, that is, pier stud concrete placings complete, after Pier Formwork, pier stud construction scaffolding are removed, by steel plate
Space medium coarse sand between stake and cushion cap fills up；Pull out the principle of vibration by layer of sand vibration compacting using steel sheet pile, adopt simultaneously
With the mode of water filling it is ensured that sand moistening, by sand surface, hydrops are not defined；
2. the above foundation ditch of cushion cap top surface
Because cushion cap above upright slope height is 1.0～1.5m, outside has traffic to pass through, and traffic load is larger, in order to ensure side
Slope is stablized and traffic safety, according to construction period and construction needs, after steel sheet pile is pulled out, cushion cap is carried out back using plain soil
Fill out, using digging machine layering leveling compacting.After the completion of Coping Construction, further according to design drawing, foundation ditch is carried out with anti-excavation process.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any people in the art
Member, without departing from the spirit and scope of the present invention, when making a little modification and perfect, therefore protection scope of the present invention is worked as
By being defined that claims are defined.
Claims (8)
1. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method it is characterised in that：Comprise the following steps：
（One）Surveying and locating
According to the four angular coordinate calculating cushion cap side and adding 10cm, released with total powerstation and mark the steel sheet pile position line behind four angle point positions；
（Two）The old road of steel sheet pile insert division is excavated
Routing at steel sheet pile position, then abolishes old road face with cutting machine along after wire cutting；
（Three）Set up steel sheet pile insertion leading truck
Prevent the bending deformation of steel sheet pile and the penetration capability improving stake, certain rigidity, firm leading truck are set；
（Four）Inserting piling steel sheet pile is to designed elevation
Vibration hammer injection is joined using digging machine；
（Five）First time cushion cap earth excavation
Cut the earth in steel sheet pile to enclosing at the absolute altitude of purlin bottom with digging machine；
（Six）Set up and enclose purlin and support
In earth excavation to after enclose purlin bottom absolute altitude, steel sheet pile is then hung in crane by design quantity welding bracket and encloses purlin and put
Put on bracket and weld；Purlin welding consolidation, last welding reinforcement angle steel in the angle of cut at the angle of cut then will be enclosed；
（Seven）Second cushion cap earth excavation
Enclosing after the completion of purlin supports and set up, after being excavated at substrate 20cm absolute altitude with digging machine, finally using manually digging clearly to setting
Meter foundation ditch bottom absolute altitude；
（Eight）Cut pile crown, pile measurement
Cushion cap excavation of foundation pit put in place after in time establishment officer carry out pile crown with equipment and abolish, pile crown concrete is cut using air compressor machine；
（Nine）Pour concrete bed course
Cushion cap bed course adopts 10cm thickness C15 concreting, and the every hem width of bed course goes out cushion cap 10cm；
（Ten）Cushion cap template is set up
Size according to cushion cap is previously placed in the surrounding of foundation ditch using bamboo slab rubber；
（11）Cushion cap reinforcing bar binding and pier stud reinforcing bar are set up
After cushion cap blinding concrete reaches the 70% of design strength, you can carry out cushion cap reinforcing bar binding；
（12）Template adjustment is reinforced
Reinforcement installation puts in place, colligation protective layer cushion block outside cushion cap facade reinforcing bar, then by mobile for the bamboo slab rubber of reinforcing bar surrounding patch
To cushion block of concrete bar protective layer；Outside bamboo slab rubber, backfill medium coarse sand is at cushion cap 2/3；Reinforced using the lumps of wood on top；
（13）Set up sealing coat
Inside steel sheet pile, cushion cap position disposes division board；
（14）Pour cushion cap pier stud concrete
Placement layer by layer, thickness is less than 30cm, is vibrated using immersion vibrator, 5～10 in vibrator insertion lower-layer concrete
Cm is it is ensured that the good combination of levels concrete；
（15）Remove and support, enclose purlin and steel sheet pile
After cushion cap concrete placings, after pier stud pours and completes form removal, carry out foundation ditch backfill, pull out steel sheet pile；
（16）Steel sheet pile pulls out the process at place
Backfilled using medium coarse sand, that is, pier stud concrete placings complete, after Pier Formwork, pier stud construction scaffolding are removed, by steel plate
Space medium coarse sand between stake and cushion cap fills up；Pull out the principle of vibration by layer of sand vibration compacting using steel sheet pile, adopt simultaneously
With the mode of water filling it is ensured that sand moistening, by sand surface, hydrops are not defined；Cushion cap is backfilled using plain soil, using digging machine
Layering leveling compacting.
2. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 3, leading truck adopts single-layer double-side form, by nose girder with enclose purlin stake etc. and form.
3. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 2
It is：Enclose generally 2.5～3.5 meters of the spacing of purlin stake, the two-sided spacing enclosed between purlin is unsuitable excessive, from the angle of protective layer thickness
Consider slightly than sheet pile wall thickness big 8～10mm.
4. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 4, before piling, grease in the fore shaft of sheet pile, squeezed into facilitating and extract.
5. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 6, enclose purlin and support all using H400 shaped steel.
6. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 8, control foundation pile height of pile top to exceed cushion cap bottom surface 10cm, when pile crown will dig and put in place, reduce broken
Stake dynamics, it is to avoid the coming off of mass concrete, to prevent from destroying protective layer and pile body.
7. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 12, cushion block quantity is pressed every square meter and is no less than 5 pieces of settings；The lumps of wood a size of 100*50mm.
8. a kind of cushion cap steel sheet pile supporting and steel sheet pile double as cushion cap template construction method, its feature as claimed in claim 1
It is：In described step 13, division board is that 12mm is thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610870183.1A CN106436689B (en) | 2016-10-05 | 2016-10-05 | The supporting of cushion cap steel sheet pile and steel sheet pile double as cushion cap template construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610870183.1A CN106436689B (en) | 2016-10-05 | 2016-10-05 | The supporting of cushion cap steel sheet pile and steel sheet pile double as cushion cap template construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN106436689A true CN106436689A (en) | 2017-02-22 |
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| CN107012792A (en) * | 2017-05-23 | 2017-08-04 | 温州市隆尚建设有限公司 | A kind of construction method of bridge substructure |
| CN108166395A (en) * | 2017-12-26 | 2018-06-15 | 中铁四局集团路桥工程有限公司 | A kind of construction method that beam bridge is built across Business Line |
| CN109322320A (en) * | 2018-11-13 | 2019-02-12 | 中国二十冶集团有限公司 | The construction method of Deep Thick Soft Ground Area cushion cap and basement bottom board |
| CN109680706A (en) * | 2018-12-11 | 2019-04-26 | 中交一公局土木工程建筑研究院有限公司 | Assembled bearing platform pier pile full scale model and crack pouring construction process using same |
| CN110258607A (en) * | 2019-06-28 | 2019-09-20 | 王义东 | A kind of convenient construction method of bridge construction that mass concrete Pile-supported stand foundation is set |
| CN112031012A (en) * | 2020-07-14 | 2020-12-04 | 上海建工集团股份有限公司 | Warehouse-dividing excavation construction method and device for bearing platform under limited operation space |
| CN112681290A (en) * | 2020-12-19 | 2021-04-20 | 中交二公局萌兴工程有限公司 | Larsen steel sheet pile support construction process |
| CN114482149A (en) * | 2022-01-25 | 2022-05-13 | 张文元 | Municipal construction foundation pile foundation construction method |
| CN114837088A (en) * | 2022-04-27 | 2022-08-02 | 中国建筑第七工程局有限公司 | Construction method of bearing platform on highway |
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| CN107012792A (en) * | 2017-05-23 | 2017-08-04 | 温州市隆尚建设有限公司 | A kind of construction method of bridge substructure |
| CN108166395A (en) * | 2017-12-26 | 2018-06-15 | 中铁四局集团路桥工程有限公司 | A kind of construction method that beam bridge is built across Business Line |
| CN109322320A (en) * | 2018-11-13 | 2019-02-12 | 中国二十冶集团有限公司 | The construction method of Deep Thick Soft Ground Area cushion cap and basement bottom board |
| CN109680706A (en) * | 2018-12-11 | 2019-04-26 | 中交一公局土木工程建筑研究院有限公司 | Assembled bearing platform pier pile full scale model and crack pouring construction process using same |
| CN110258607A (en) * | 2019-06-28 | 2019-09-20 | 王义东 | A kind of convenient construction method of bridge construction that mass concrete Pile-supported stand foundation is set |
| CN112031012A (en) * | 2020-07-14 | 2020-12-04 | 上海建工集团股份有限公司 | Warehouse-dividing excavation construction method and device for bearing platform under limited operation space |
| CN112681290A (en) * | 2020-12-19 | 2021-04-20 | 中交二公局萌兴工程有限公司 | Larsen steel sheet pile support construction process |
| CN114482149A (en) * | 2022-01-25 | 2022-05-13 | 张文元 | Municipal construction foundation pile foundation construction method |
| CN114482149B (en) * | 2022-01-25 | 2024-06-04 | 广东玄城建设工程有限公司 | Municipal construction foundation pile foundation construction method |
| CN114837088A (en) * | 2022-04-27 | 2022-08-02 | 中国建筑第七工程局有限公司 | Construction method of bearing platform on highway |
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