CN105839850A - Basement reverse-construction scape post-casting pre-stressed construction method - Google Patents
Basement reverse-construction scape post-casting pre-stressed construction method Download PDFInfo
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- CN105839850A CN105839850A CN201610175190.XA CN201610175190A CN105839850A CN 105839850 A CN105839850 A CN 105839850A CN 201610175190 A CN201610175190 A CN 201610175190A CN 105839850 A CN105839850 A CN 105839850A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
- E04G13/028—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor for columns' capital
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
A basement reverse-construction scape post-casting pre-stressed construction method belongs to the technical field of building engineering. In the method, construction of a beam plate of the ground floor is completed at first, and then construction of a beam plate in the first underground layer of the basement is carried out, and finally construction of first underground layer scapes which connect the beam plates in the ground floor and the first underground layer is carried out. The construction method includes the steps of: retaining pouring holes, performing construction seam treatment of chapiters and scapes, establishing scape templates, tightening and pre-stressing opposite-pull screw rods, performing scape concrete pouring, detaching the templates and maintaining the scapes, and removing hornlike mouth of the chapiters. The construction method greatly simplifies pouring and tamping construction and the concrete can be delivered from the top board of the ground floor to the pillars in the first underground layer of the basement directly, wherein the pouring and tamping construction starts during transportation, so that the method saves time and labor, and solves a problem that the concrete needs to lift up to the beam plate on the first underground layer with a tower crane. The method greatly increases pouring and tamping construction speed of the scape, reduces construction time, has excellent promoting effect, and is suitable for engineering of secondary pouring and tamping the scapes in a basement through the reverse construction.
Description
Technical field
The invention belongs to construction engineering technical field, be specifically related to one and both facilitated site operation, new and old concrete can be improved again
Precompressed construction method is poured into a mould after the basement top-down method shaft of seam degree of compaction.
Background technology
After solving basement top-down method shaft at present, the conventional construction method of pouring concrete has four kinds, respectively bell mouth pressure
Note method, repeatedly vibrating method, sleeve pipe casting method, filling method, wherein bell mouth drape process is most popular method, but the method
The most significant three shortcomings are:
1) in traditional bell mouth drape process, funnel hang plate inclination angle is that between 20 ° to 30 °, inclination angle arranges too small, it may appear that with
Lower two problems: one is to cause bell mouth oral area excessive, and at the funnel that the later stage is to be rejected, concrete volume is many；Two tilt when being to pour concrete
The structure counter-force that plate provides is the most scientific and reasonable to closely knit the played effect of new and old concrete contact surface；
2) have a disadvantage in that one is the precompressed measure not having hang plate to concrete during traditional bell mouth drape process formwork；Two are
Bell mouth size is arranged does not has the subjective arbitrariness that theoretical foundation is bigger；
3) concrete of traditional bell mouth drape process waters the method for smashing and there is certain defect, because of post core position lattice column existence and
The setting of column tie-bar, water be difficult to the concrete newly poured when smashing to vibrate the most closely knit.
Summary of the invention
For the above-mentioned problems in the prior art, water after it is an object of the invention to use basement top-down method shaft
Note precompressed construction had both facilitated site operation, poured into a mould precompressed after improving again the basement top-down method shaft of new and old concrete seam degree of compaction
Construction method.
Precompressed construction method is poured into a mould, it is characterised in that first complete one layer of beam slab and execute after described basement top-down method shaft
Work, then basement negative one layer beam slab of constructing, finally construction connects negative one layer beam slab and the negative one layer shaft of one layer of beam slab, its construction
Technique is as follows: pouring hole indwelling, stigma and shaft treatment of construction joints, shaft formwork erection, Screw arbor with nut at both-ends tighten precompressed, shaft mixes
Solidifying soil pours, form removal and maintenance and reject stigma horn mouth.
Precompressed construction method is poured into a mould, it is characterised in that Specific construction technique is as follows after described basement top-down method shaft:
1) pouring hole indwelling.Beam slab and stigma is poured, in order to later stage shaft concreting, stigma and beam slab are mixed by design requirement
When solidifying soil pours, on the Square consisting of two isosceles right-angled triangles of frame column position, pre-buried PVC sleeve pipe is as reserved pouring hole；
2) stigma and shaft treatment of construction joints.Capital face dabbing, post bottom surface concrete picks the pan bottom shape hole of concave up of chisel, simultaneously
Before casting and compacting of concrete, 30min waters a small amount of clear water in template, by abundant to template, lattice column and reinforcing bar moistening, casting concrete
Before, at post bottom surface, first lay one layer of stone mortar；
3) shaft formwork erection.Installing funnel pressure injection entrance in the stigma bottom that step 1) is watered, funnel pressure injection entrance is by two
Funnel hang plate is separately fixed at and waters the template top of shaft concrete and obtain, and funnel pressure injection entry bottom is positioned at stigma bottom surface down
At 300mm, funnel pressure injection access opening top is positioned at stigma bottom surface up 200mm；
4) Screw arbor with nut at both-ends tightens precompressed.The funnel hang plate that step 3) is installed arranges Screw arbor with nut at both-ends, tightens Screw arbor with nut at both-ends, profit
With Screw arbor with nut at both-ends precompressed before concrete initial set, make concrete upwards push up power, make after-pouring concrete the most closely knit with top stigma seam crossing；
5) shaft casting and compacting of concrete.Watering concrete slump when smashing and control at 170-200mm, concrete segmentation pours, concrete
The primary height that pours is less than 600mm, and on carrying out after each concrete vibrating poured in height is closely knit once again
Pouring, concreting extremely stops pouring when stigma lower surface 280-320mm, intermittently 1 h, so that concrete settlement,
It is further continued for before concrete initial set pouring residue position concrete；Owing to bell mouth top exceeds 200mm than stigma bottom surface, utilize mixed
Solidifying soil deadweight and the principle of internal and external pressure balance, by new-old concrete junction vibration compacting, reduce the generation of handing-over seam；
6) form removal and maintenance.After concreting, the form removal again when concrete strength reaches 1N every square millimeter, and
Ensureing that form removal process center pillar corner angle are injury-free, use plastic sheeting parcel maintenance after form removable, seam crossing uses adhesive tape close
Envelope；
7) stigma horn mouth is rejected.After concrete strength reaches 75%, artificial stigma bell mouth any excess concrete of rejecting, and and post
Surface is the most smooth, then carries out the fine chipping of concrete surface by artificial stone with textures cut with an axe technique, finally by four external corners of pillar with axe
Wear into the external corner of Founder with angle grinding machine, construction completes.
Precompressed construction method is poured into a mould, it is characterised in that in step 1), PVC sleeve pipe is straight after described basement top-down method shaft
Footpath a size of 140-160mm, preferably 150mm.
After described basement top-down method shaft pour into a mould precompressed construction method, it is characterised in that step 2) in stone mortar paving
If thickness is 50-100mm.
Precompressed construction method is poured into a mould, it is characterised in that funnel pressure described in step 3) after described basement top-down method shaft
Inlet is that 45 ° of inclinations are fixed on and water the template top of shaft concrete and obtain by funnel hang plate, and funnel pressure injection entrance pours height
For 500mm, width is 500mm, the post length of side in face, a length of bell mouth place.
Precompressed construction method is poured into a mould, it is characterised in that to drawing spiral shell described in step 4) after described basement top-down method shaft
Bar two ends and funnel hang plate junction set with cleat, cleat pad.
Precompressed construction method is poured into a mould, it is characterised in that puddling method in step 5) after described basement top-down method shaft
For: using immersion vibrator to insert soon and pulls out slowly, insert point evenly distributed, pointwise is moved, and carries out in order, mobile asks away from for 300-
400mm；Vibrate last layer time should insert lower-layer concrete face 50mm, to eliminate the seam of two interlayers.
Precompressed construction method is poured into a mould, it is characterised in that concrete every some vibrating time after described basement top-down method shaft
For 30-45s, shake again after every some interval 10-20min.
Precompressed construction method is poured into a mould, it is characterised in that step 5) is watered coagulation when smashing after described basement top-down method shaft
The soil slump is 180mm.
By using above-mentioned technology, compared with prior art, beneficial effects of the present invention is as follows:
1) present invention slump of being marched into the arena by job site concrete controls between 170mm to 200mm, preferably 180mm, it is therefore prevented that concrete
The slump is excessive, occurs that segregation phenomenon affects concrete strength, it also avoid the too small vibration compacting that is difficult to of concrete slump, Yi Zao simultaneously
Becoming honeycomb or hole phenomenon, the present invention also extends concrete every some vibrating time, and both act on its concrete of raising jointly
Vibration compacting；
2) casting concrete front pillar formwork erection of the present invention reinforcing, does detailed inspection to the setting of tie, Screw arbor with nut at both-ends, and
Screw arbor with nut at both-ends and hang plate junction arrange cleat, the phenomenons such as spillage, swollen mould occurs in limited preventing in casting process, quick-fried mould,
Improve construction quality；
3) present invention be basement top-down method secondary water pound column body design form erection plan, have concurrently the strongest actual operability and
Scientific basis, waters, in combination with sum up out from practical construction experience, the scheme of smashing, and both complementary results can be reliable
After ensureing form removal, shaft and stigma hand over seam crossing to pour dense and avoid the occurrence of shaft casting pounding quality common fault, have the strongest pushing away
Wide effect, it is adaptable to use basement top-down method secondary to water the engineering of pound column body；
2) being first to complete one layer of beam slab due to basement top-down method, rear construction basement negative one layer beam slab, negative one layer shaft is last
Construction, therefore watering concrete when smashing negative one layer shaft and how transporting negative one layer from one layer of beam slab and close is the construction watering pound column body
Difficult point, the present invention smashes the way of hole to be provided, greatly facilitates and water the construction behaviour smash by watering one layer of beam slab upper prop corner setting
Make so that concrete directly can be transported to basement negative one layer post from one layer of top board, directly start to water to smash while transport
Operation, time saving and energy saving, it is to avoid concrete first hangs on negative one layer beam slab with tower crane, then by hand haulage to post limit, finally leads to
Cross adjustable shelf relay and water the awkward situation smash, substantially increase shaft and water the speed of application smash, saved the construction period.
Accompanying drawing explanation
Fig. 1 is the constructing structure schematic diagram of the present invention；
Fig. 2 is the construction flow chart of the present invention.
In figure: 1-funnel hang plate, 2-cleat, 3-Screw arbor with nut at both-ends, 4-template, pouring concrete after 5-, 6-stigma bottom surface,
7-funnel pressure injection entrance, 8-stigma, 9-pouring out concrete bucket.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is made the description entered, but protection scope of the present invention is not limited in
This:
Fig. 1 is the constructing structure schematic diagram of the present invention, as it is shown in figure 1, the bottom surface of stigma 8 is referred to as stigma bottom surface 6, is also new and old mixed
Solidifying soil seam crossing, funnel pressure injection entrance 7 is arranged on shaft, and funnel pressure injection entrance 7 is inclined and mounted on shaft by funnel hang plate 1
Template 4 top, angle of inclination is 45 °, i.e. funnel pressure injection entrance 7 is equilateral triangle structure, and is positioned at bottom funnel pressure injection entrance 7
At the down 300mm of stigma bottom surface 6, funnel pressure injection entrance 7 top is positioned at the up 200mm of stigma bottom surface 6, this funnel pressure injection entrance
7 pour height for 500mm, and width is 500mm, the post length of side in face, a length of bell mouth place；Funnel hang plate 1 includes two,
It is symmetricly set on two side template 4 tops, and two funnel hang plates 1 are connected by Screw arbor with nut at both-ends 3, in order to make after-pouring concrete 5
The most closely knit with stigma bottom surface 6 seam crossing of top stigma 8, the present invention is arranged with funnel hang plate 1 junction at Screw arbor with nut at both-ends 3
Cleat 2, is padded by cleat 2, then when tightening Screw arbor with nut at both-ends 3, utilizes Screw arbor with nut at both-ends precompressed before concrete initial set, make concrete upwards
Top power, thus reach the purpose that seam is closely knit, the concrete of funnel pressure injection entrance 7 is fed by pouring out concrete bucket 9.
As in figure 2 it is shown, pour into a mould precompressed construction method after the basement top-down method shaft of the present invention, it is first to complete one layer of beam
Plate, rear construction basement negative one layer beam slab, negative one layer shaft is finally constructed, and waters after shaft construction employing basement top-down method shaft
Note preloading method, its concrete construction method is as follows:
1) pouring hole indwelling
By design requirements cast stigma 8 and beam slab, for ease of the pouring of rear pouring concrete 5 of later stage shaft, stigma 8 and beam slab are mixed
When solidifying soil pours, on the Square consisting of two isosceles right-angled triangles of frame column position, pre-buried PVC sleeve pipe as reserved pouring hole, the diameter dimension of PVC sleeve pipe is
140-160mm, preferably 150mm；
2) stigma 8 and shaft treatment of construction joints
The end face of the stigma 8 first poured into a mould carries out dabbing according to a conventional method, and bottom surface concrete need to pick the pan bottom shape that chisel is downwardly convex,
So that laitance is driven out of when pouring by the rear pouring concrete 5 of shaft；Build lattice column, reinforcing bar and template 5, simultaneously at casting and compacting of concrete
Front 30min waters a small amount of clear water in template 5, by abundant to template 5, lattice column and reinforcing bar moistening, new at the bottom of the i.e. post of 6(of stigma bottom surface
Old concrete faying face) first lay one layer of stone mortar, laying depth controls at 50mm-100mm, existing to eliminate " rotten "
As；
3) shaft formwork erection
Column template installs should be installed by arrangement and method for construction requirement and reinforce, and detailed inspection is done in the setting to tie, Screw arbor with nut at both-ends,
Prevent that casting process occurs spillage, swollen mould, the phenomenon such as quick-fried mould, stigma 8 bottom formerly watering concrete installs funnel pressure injection entrance 7,
Funnel pressure injection entrance 7 is that the top that 45 ° of funnel hang plates 1 are arranged on template 4 is constituted by inclination angle, bottom funnel pressure injection entrance 7
At the down 300mm of stigma bottom surface 6, funnel pressure injection entrance 7 top exceeds stigma bottom surface 6, and the height exceeded is 200mm, therefore funnel
It is 500mm that mouth pours height, and width is 500mm, the post length of side in face, a length of bell mouth place；
The present invention, by arranging the post length of side in face, bell mouth a length of bell mouth place, is conducive to watering the carrying out smashing operation, way
It is the bell mouth length in post opposite sides indwelling can be taked isometric with its place cylinder length of side, and set up auxiliary in another both sides
Bell mouth, its a length of 500mm, to water when smashing big bell mouth and smash position for mainly watering, little bell mouth is that auxiliary is vibrated position.
4) Screw arbor with nut at both-ends tightens precompressed
Funnel hang plate 1 arranges Screw arbor with nut at both-ends 3, and pads with funnel hang plate 1 junction cleat 2 at Screw arbor with nut at both-ends 3
Real, tighten Screw arbor with nut at both-ends 3, utilize Screw arbor with nut at both-ends 3 precompressed before concrete initial set, make concrete upwards push up power, make rear pouring concrete 5 and top
Stigma bottom surface 6 is the most closely knit；
5) shaft casting and compacting of concrete
Owing to concrete slump is excessive, it may appear that segregation phenomenon, concrete strength can be affected, and concrete slump is too small, then be difficult to vibrate close
Real, easily cause honeycomb or hole phenomenon, the present invention slump of being marched into the arena by control concrete at the construction field (site), at 170mm to 200mm, is watered
Concrete slump preferred 180mm when smashing, the primary height that pours of concrete is less than 600mm, and pours height each
Can pour after interior concrete vibrating is closely knit, concreting stops to when stigma lower surface about 300mm next time
Pour, intermittently 1 h, so that concrete settlement, be further continued for before concrete initial set pouring residue position concrete, due to funnel
Pressure injection entrance 7 top exceeds 200mm than stigma 8, utilizes the principle of concrete gravity and internal and external pressure balance, by new-old concrete
Junction vibration compacting, reduces the generation of handing-over seam, and on two funnel pressure injection entrances 7, volume of concrete summation is more than stigma bottom surface
Shaft volume of concrete between 6 and funnel pressure injection entrance 7 bottom surface；
The present invention smashes when shaking, and smashes and shake between two lattice columns, assists to smash simultaneously and shake outside template 4, and concrete every vibrates
Time controls, at 30 to 45s, to shake again after 10 to 20min；Final step concreting, concrete is adjacent from bell mouth
Both sides blanking, and vibrating in the same side, when vibrating, vibrating spear need to insert 50mm in casting concrete in advance.Pour to stigma bottom surface
After, top laitance is cleared up, then casting concrete exceed New-old concrete joint surface at least 100mm again, observe another both sides,
After concrete flowing comes, at the concrete of both sides teeming below.
Due to the fact that lattice column occupy-place affects, indirectly cause the situation that reinforcing bar configuration is overstocked, vibrating head when therefore vibrating
Diameter is excessive is unfavorable for concrete vibration compacting, there is portion 50mm vibrating head and is difficult to insertion and vibrates, therefore project management department should join simultaneously
Standby 30mm minor diameter vibrating head, is used for coordinating to water smashing operation, it is ensured that concrete waters the density smash.Watering when smashing, place slightly larger to space uses
50mm vibrating head insert vibrate, for reinforcing bar intensive cannot insert 50mm shock club vibrate position then use instead 30mm vibration
Rod, two kinds of specification vibrating heads are also used, it is ensured that all can fully be vibrated in each position of vibrating told somebody what one's real intentions are, and the quality that makes to vibrate obtains
Ensure；
6) form removal and maintenance
After concreting when concrete strength reaches 1N every square millimeter form removal again, and during ensureing form removal
Post corner angle are injury-free, and template 4 uses plastic sheeting parcel maintenance after removing, seam crossing uses rubber belt sealing；
1-funnel hang plate, 2-cleat, 3-Screw arbor with nut at both-ends, 4-template, pouring concrete after 5-, 6-stigma bottom surface, 7-funnel pressure
Inlet, 8-stigma, 9-pouring out concrete bucket.
7) stigma horn mouth is rejected
After concrete strength reaches 75%, any excess concrete at funnel pressure injection entrance 7 outside rejecting stigma 8, for avoiding the old and new's coagulation
There is crack in soil faying face, forbids to use the machineries such as pneumatic pick when picking chisel, and chisel is manually picked in whole employings, and the most flat with post surface
Whole, then carry out the fine chipping of concrete surface with axe by artificial stone with textures cut with an axe technique, finally four external corners of pillar angle grinding machine is ground
Become upright external corner.
Embodiment 1:
Construction Business Building, Wenzhou engineering is watered to smash at basement post secondary and be have employed the construction of this engineering method.Engineering is positioned at Lucheng City, Wenzhou City
District, overall floorage 57208.1, wherein ground 35315.3, underground 21892.8.The long 81m in foundation ditch north-south, East and West direction
Wide 98m, foundation ditch girth 358m, excavation area 7938, cutting depth about 12.7-13.6 rice, basement three layers, use this engineering method
After operation, both decreased and watered the generation smashing rear pillar crack and voids and pits, significantly improved again new and old concrete seam crossing quality, once
Survive, decrease the trouble of later stage repairing, established the basis of wound high grade project for project.
Embodiment 2:
Wenzhou Medical University's eye have employed the construction of this engineering method depending on Guang Yijiao building reconstruction and extension project.Engineering is positioned at Lucheng District, Wenzhou City,
Overall floorage 49181.3.Superstructure is 22 layers of main building and 5 layers of annex.Basement is two layers, for integrally descending room.
This engineering belongs to frame-shear structure, raft foundation, and basement exists post core lattice column and needs secondary to water the pillar smash to have 94.Warp
Cross the data acquisition to after-pouring post quality problems, once water and smash qualification rate and be obviously improved, including voids and pits, crack, swollen mould,
Rotten, the quality problems such as hole all significantly reduce, improve post casting pounding quality.
Claims (9)
1. pour into a mould precompressed construction method after basement top-down method shaft, it is characterised in that first complete one layer of Beam-Slab Construction, then construct
Basement negative one layer beam slab, finally construction connects negative one layer beam slab and the negative one layer shaft of one layer of beam slab, and its construction technology is as follows:
Pouring hole indwelling, stigma and shaft treatment of construction joints, shaft formwork erection, Screw arbor with nut at both-ends tighten precompressed, shaft concreting,
Form removal and maintenance and reject stigma horn mouth.
Precompressed construction method is poured into a mould, it is characterised in that specifically execute after basement top-down method shaft the most according to claim 1
Work technique is as follows:
1) pouring hole indwelling.Beam slab and stigma is poured, in order to later stage shaft concreting, stigma and beam slab are mixed by design requirement
When solidifying soil pours, on the Square consisting of two isosceles right-angled triangles of frame column position, pre-buried PVC sleeve pipe is as reserved pouring hole；
2) stigma and shaft treatment of construction joints.Capital face dabbing, post bottom surface concrete picks the pan bottom shape hole of concave up of chisel, simultaneously
Before casting and compacting of concrete, 30min waters a small amount of clear water in template, by abundant to template, lattice column and reinforcing bar moistening, casting concrete
Before, at post bottom surface, first lay one layer of stone mortar；
3) shaft formwork erection.Installing funnel pressure injection entrance in the stigma bottom that step 1) is watered, funnel pressure injection entrance is by two
Funnel hang plate is separately fixed at and waters the template top of shaft concrete and obtain, and funnel pressure injection entry bottom is positioned at stigma bottom surface down
At 300mm, funnel pressure injection access opening top is positioned at stigma bottom surface up 200mm；
4) Screw arbor with nut at both-ends tightens precompressed.The funnel hang plate that step 3) is installed arranges Screw arbor with nut at both-ends, tightens Screw arbor with nut at both-ends, profit
With Screw arbor with nut at both-ends precompressed before concrete initial set, make concrete upwards push up power, make after-pouring concrete the most closely knit with top stigma seam crossing；
5) shaft casting and compacting of concrete.Watering concrete slump when smashing and control at 170-200mm, concrete segmentation pours, concrete
The primary height that pours is less than 600mm, and on carrying out after each concrete vibrating poured in height is closely knit once again
Pouring, concreting extremely stops pouring when stigma lower surface 280-320mm, intermittently 1 h, so that concrete settlement,
It is further continued for before concrete initial set pouring residue position concrete；Owing to bell mouth top exceeds 200mm than stigma bottom surface, utilize mixed
Solidifying soil deadweight and the principle of internal and external pressure balance, by new-old concrete junction vibration compacting, reduce the generation of handing-over seam；
6) form removal and maintenance.After concreting, the form removal again when concrete strength reaches 1N every square millimeter, and
Ensureing that form removal process center pillar corner angle are injury-free, use plastic sheeting parcel maintenance after form removable, seam crossing uses adhesive tape close
Envelope；
7) stigma horn mouth is rejected.After concrete strength reaches 75%, artificial stigma bell mouth any excess concrete of rejecting, and and post
Surface is the most smooth, then carries out the fine chipping of concrete surface by artificial stone with textures cut with an axe technique, finally by four external corners of pillar with axe
Wear into the external corner of Founder with angle grinding machine, construction completes.
Precompressed construction method is poured into a mould, it is characterised in that step 1) after basement top-down method shaft the most according to claim 2
Middle PVC casing diameter a size of 140-160mm, preferably 150mm.
Precompressed construction method is poured into a mould, it is characterised in that step 2) after basement top-down method shaft the most according to claim 2
Middle stone mortar laying depth is 50-100mm.
Precompressed construction method is poured into a mould, it is characterised in that step 3) after basement top-down method shaft the most according to claim 2
Described in funnel pressure injection entrance be that 45 ° of inclinations are fixed on and water the template top of shaft concrete and obtain by funnel hang plate, funnel pressure injection
It is 500mm that entrance pours height, and width is 500mm, the post length of side in face, a length of bell mouth place.
Precompressed construction method is poured into a mould, it is characterised in that step 4) after basement top-down method shaft the most according to claim 2
Described in Screw arbor with nut at both-ends two ends and funnel hang plate junction set with cleat, cleat pad.
Precompressed construction method is poured into a mould, it is characterised in that step 5) after basement top-down method shaft the most according to claim 2
Middle puddling method is: using immersion vibrator to insert soon and pull out slowly, insert point evenly distributed, pointwise is moved, and carries out in order, moves and asks
Away from for 300-400mm；Vibrate last layer time should insert lower-layer concrete face 50mm, to eliminate the seam of two interlayers.
Precompressed construction method is poured into a mould, it is characterised in that concrete after basement top-down method shaft the most according to claim 7
Every some vibrating time is 30-45s, shakes again after every some interval 10-20min.
Precompressed construction method is poured into a mould, it is characterised in that step 5) after basement top-down method shaft the most according to claim 2
In to water concrete slump when smashing be 180mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245680A (en) * | 2016-08-26 | 2016-12-21 | 中天建设集团有限公司 | Construction method is watered after contrary sequence method shaft precompressed |
| CN106567543A (en) * | 2016-10-26 | 2017-04-19 | 上海中锦建设集团股份有限公司 | Slab-bottom structural concrete column reserved hole construction method |
| CN106836564A (en) * | 2017-01-03 | 2017-06-13 | 深圳大学 | Every load bearing wall template support method in a kind of underground station |
| CN108277818A (en) * | 2018-03-22 | 2018-07-13 | 中国电建市政建设集团有限公司 | Basement top-down method Combined tower crane foundation structure and construction method |
| CN108612260A (en) * | 2018-07-05 | 2018-10-02 | 江苏省苏中建设集团股份有限公司 | A kind of constructional column top concrete pours once-molding construction process and its device |
| CN110130646A (en) * | 2019-05-21 | 2019-08-16 | 杭州悦为科技有限公司 | The Constructional Col-umn Construction method of device is poured based on tool-type intelligence compressional structure column |
| CN111719559A (en) * | 2020-07-16 | 2020-09-29 | 湖南建工集团有限公司 | Concrete conveying construction method for deep foundation pit by vertical synchronous full-reverse construction method |
| CN111733820A (en) * | 2020-06-22 | 2020-10-02 | 上海建工四建集团有限公司 | Reverse construction method waterproof grouting hole device and construction method |
| CN112211401A (en) * | 2020-10-29 | 2021-01-12 | 中冶天工集团有限公司 | Pipeline mold for pouring high-column concrete and construction method thereof |
| CN113090064A (en) * | 2021-04-15 | 2021-07-09 | 中国建筑第二工程局有限公司 | Roof panel column head and newly-built structural column folding construction system and construction method thereof |
| CN113756601A (en) * | 2021-09-27 | 2021-12-07 | 山西五建集团有限公司 | Frame column replacement and reinforcement construction method |
| CN114197526A (en) * | 2021-12-28 | 2022-03-18 | 中铁建工集团有限公司 | Formwork system with vertical structure by reverse construction method and construction method |
| CN115387635A (en) * | 2022-09-29 | 2022-11-25 | 中建八局第一建设有限公司 | System for preventing concrete flat slab floor basement overload collapses |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5586080A (en) * | 1980-02-25 | 1981-09-03 | Moore, C.D. | Reconditioning structural piling |
| JPH06317016A (en) * | 1991-03-15 | 1994-11-15 | Okabe Co Ltd | Formwork device for pillar |
| US5586080A (en) * | 1995-06-26 | 1996-12-17 | Micron Technology, Inc. | Local word line phase driver |
| CN2898153Y (en) * | 2006-04-18 | 2007-05-09 | 上海市第二建筑有限公司 | Concrete pouring tamping pole cap node by reversed construction |
| AU2006201409A1 (en) * | 2005-04-12 | 2007-10-18 | William George Ross | Stump Former |
| CN101139867A (en) * | 2006-09-08 | 2008-03-12 | 上海市第七建筑有限公司 | Pressure-grouting construction method for structure consolidation |
| CN101492918A (en) * | 2008-01-24 | 2009-07-29 | 华东建筑设计研究院有限公司 | Beam column node for base pit engineering of topdown construction method |
| CN203654760U (en) * | 2013-12-30 | 2014-06-18 | 上海建工二建集团有限公司 | Device for treating seam between vertical structure and horizontal structure |
-
2016
- 2016-03-25 CN CN201610175190.XA patent/CN105839850B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5586080A (en) * | 1980-02-25 | 1981-09-03 | Moore, C.D. | Reconditioning structural piling |
| JPH06317016A (en) * | 1991-03-15 | 1994-11-15 | Okabe Co Ltd | Formwork device for pillar |
| US5586080A (en) * | 1995-06-26 | 1996-12-17 | Micron Technology, Inc. | Local word line phase driver |
| AU2006201409A1 (en) * | 2005-04-12 | 2007-10-18 | William George Ross | Stump Former |
| CN2898153Y (en) * | 2006-04-18 | 2007-05-09 | 上海市第二建筑有限公司 | Concrete pouring tamping pole cap node by reversed construction |
| CN101139867A (en) * | 2006-09-08 | 2008-03-12 | 上海市第七建筑有限公司 | Pressure-grouting construction method for structure consolidation |
| CN101492918A (en) * | 2008-01-24 | 2009-07-29 | 华东建筑设计研究院有限公司 | Beam column node for base pit engineering of topdown construction method |
| CN203654760U (en) * | 2013-12-30 | 2014-06-18 | 上海建工二建集团有限公司 | Device for treating seam between vertical structure and horizontal structure |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245680A (en) * | 2016-08-26 | 2016-12-21 | 中天建设集团有限公司 | Construction method is watered after contrary sequence method shaft precompressed |
| CN106567543A (en) * | 2016-10-26 | 2017-04-19 | 上海中锦建设集团股份有限公司 | Slab-bottom structural concrete column reserved hole construction method |
| CN106836564B (en) * | 2017-01-03 | 2020-04-14 | 深圳大学 | Formwork supporting method for partition bearing wall in underground station |
| CN106836564A (en) * | 2017-01-03 | 2017-06-13 | 深圳大学 | Every load bearing wall template support method in a kind of underground station |
| CN108277818A (en) * | 2018-03-22 | 2018-07-13 | 中国电建市政建设集团有限公司 | Basement top-down method Combined tower crane foundation structure and construction method |
| CN108612260A (en) * | 2018-07-05 | 2018-10-02 | 江苏省苏中建设集团股份有限公司 | A kind of constructional column top concrete pours once-molding construction process and its device |
| CN110130646A (en) * | 2019-05-21 | 2019-08-16 | 杭州悦为科技有限公司 | The Constructional Col-umn Construction method of device is poured based on tool-type intelligence compressional structure column |
| CN111733820A (en) * | 2020-06-22 | 2020-10-02 | 上海建工四建集团有限公司 | Reverse construction method waterproof grouting hole device and construction method |
| CN111719559A (en) * | 2020-07-16 | 2020-09-29 | 湖南建工集团有限公司 | Concrete conveying construction method for deep foundation pit by vertical synchronous full-reverse construction method |
| CN112211401A (en) * | 2020-10-29 | 2021-01-12 | 中冶天工集团有限公司 | Pipeline mold for pouring high-column concrete and construction method thereof |
| CN113090064A (en) * | 2021-04-15 | 2021-07-09 | 中国建筑第二工程局有限公司 | Roof panel column head and newly-built structural column folding construction system and construction method thereof |
| CN113756601A (en) * | 2021-09-27 | 2021-12-07 | 山西五建集团有限公司 | Frame column replacement and reinforcement construction method |
| CN114197526A (en) * | 2021-12-28 | 2022-03-18 | 中铁建工集团有限公司 | Formwork system with vertical structure by reverse construction method and construction method |
| CN115387635A (en) * | 2022-09-29 | 2022-11-25 | 中建八局第一建设有限公司 | System for preventing concrete flat slab floor basement overload collapses |
| CN115387635B (en) * | 2022-09-29 | 2023-07-25 | 中建八局第一建设有限公司 | System for preventing concrete girderless floor basement from overload collapse |
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