CN107806114A - Basement roof closes late poured band structure and construction method in advance - Google Patents
Basement roof closes late poured band structure and construction method in advance Download PDFInfo
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- CN107806114A CN107806114A CN201711249075.3A CN201711249075A CN107806114A CN 107806114 A CN107806114 A CN 107806114A CN 201711249075 A CN201711249075 A CN 201711249075A CN 107806114 A CN107806114 A CN 107806114A
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- Environmental & Geological Engineering (AREA)
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- General Engineering & Computer Science (AREA)
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- Hydrology & Water Resources (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to basement roof to close late poured band structure in advance, including：Basement roof closes post-cast strip side form structure in advance, basement roof closes the prefabricated harden structure of the concordant type in post-cast strip in advance and basement roof closes post-cast strip and hangs mould jacking pouring structure in advance；Basement roof closes post-cast strip side form structure in advance includes combed lattice skeleton, expanded steel diamond mesh, steel wire Dense mesh screen, vertical strengthening steel slab, steel plate for sealing water, triatic stay, oblique iron wire support lacing wire bar and straight screw sleeve；Basement roof closes the prefabricated harden structure of the concordant type in post-cast strip in advance to be included post-cast strip cage bar, upper prefabricated board with ribbing, cystosepiment, connecting screw, deformation adjustment pad and hangs drawing spiral shell.The beneficial effects of the invention are as follows：The present invention realize combed lattice skeleton, expanded steel diamond mesh, steel wire Dense mesh screen, vertical strengthening steel slab, steel plate for sealing water being accurately positioned and it is fixed, while triatic stay and oblique iron wire support lacing wire bar set and are more prone to.
Description
Technical field
Close late poured band structure and construction method in advance the present invention relates to basement roof, belong to basement post-pouring zone closing work
Journey field, constructed suitable for skyscraper and Overlong Concrete Structure, tighter for the duration, the high building of settlement request has very well
Application effect.
Background technology
In high-rise, often high-rise main tower and low layer podium are connected together, because basement area is larger, are
Overcome the post-cast strip for producing harmful cracks by concrete shrinkage and foundation settlement and setting, but post-cast strip possess section greatly with
And reinforcing bar it is intensive the characteristics of, in supporting module, its difficulty is very big, and especially some debris or rubbish are fallen into, and for a long time not
It can close, it is impossible to carry out timely earthing, considerable influence is produced to architecture quality.In conventional construction method, post-cast strip is in frame
It is separately provided when body is set up, after meeting design requirement after post-cast strip, then the concreting using a high strength grade, so meeting
Cause post-cast strip to close for a long time, influence the development of engineering.
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art, there is provided a kind of basement roof closes late poured band structure in advance
And construction method.
It is a further object to provide a kind of basement roof to close late poured band structure in advance.The purpose of the present invention is
It is achieved through the following technical solutions：
This basement roof closes late poured band structure in advance, including：Basement roof close in advance post-cast strip side form structure,
Lower ceiling plate closes the prefabricated harden structure of the concordant type in post-cast strip in advance and basement roof closes post-cast strip and hangs mould jacking pouring structure in advance；
Basement roof close in advance post-cast strip side form structure include combed lattice skeleton, expanded steel diamond mesh, steel wire Dense mesh screen, it is vertical plus
Gu steel plate, steel plate for sealing water, triatic stay, oblique iron wire support lacing wire bar and straight screw sleeve；Basement roof closes post-cast strip in advance
The prefabricated harden structure of concordant type includes post-cast strip cage bar, upper prefabricated board with ribbing, cystosepiment, connecting screw, deformation adjustment pad and hung
Draw screw rod；Basement roof close in advance post-cast strip hang mould jacking pouring structure include upper prefabricated board with ribbing, hang draw screw rod, sealing
Ring, lower prefabricated board with ribbing, pump line and concrete pipe clamp built-in fitting；
Expanded steel diamond mesh, steel wire Dense mesh screen and steel plate for sealing water are linked as by entirety, combed lattice using combed lattice skeleton
Formula skeleton is evenly arranged vertical strengthening steel slab, and horizontal reinforcement connects combed lattice skeleton with post-cast strip cage bar colligation or welding up and down
Connect, steel plate for sealing water is welded on combed lattice skeleton horizontal reinforcement；In post-cast strip, cavity sets triatic stay and oblique iron wire
Lacing wire bar is supportted, triatic stay and oblique iron wire support lacing wire bar are stayed on vertical strengthening steel slab, pre-buried straight on vertical strengthening steel slab
Screw shell, realize that triatic stay and holding out against for oblique iron wire support lacing wire bar adjust and fixed；
Prefabricated board uses upper prefabricated board with ribbing, and upper prefabricated board with ribbing has girt strip, and girt strip and upper prefabricated board with ribbing are integral prefabricated；
Cystosepiment is fixed on combed lattice skeleton, and upper prefabricated board both sides with ribbing are steeped by being connected with the reserved overlap joint step of cystosepiment
The pre-buried connecting screw of foam plate, deformation adjustment pad is set at connecting screw, upper prefabricated board with ribbing is fastened by connecting screw；
Post-cast strip lower prefabricated board with ribbing draws screw rod to fix by being embedded in hanging for upper prefabricated board with ribbing in advance, and lower prefabricated board with ribbing leads to
Crossing to hang draws screw rod solid to tensing with upper prefabricated board with ribbing, hangs and sets seal ring, the lower pre-buried concrete pipe clamp of prefabricated board with ribbing among drawing screw rod
Built-in fitting, pump line are fixed by concrete pipe clamp built-in fitting.
As preferential：Upper prefabricated board with ribbing is concordant with basement roof face, girt strip and post-cast strip cage bar build-in.
This basement roof closes the construction method of late poured band structure in advance, comprises the following steps：
1) prefabricated board is processed：According to the prefabricated board size of engineering post-cast strip width design, prefabricated board carries girt strip, reinforcing bar end
90 ° of crotches are respectively provided with, prefabricated board is divided into upper prefabricated board with ribbing and lower prefabricated board with ribbing, and lower prefabricated board with ribbing is opened in plate center to be poured
Mouthful；
2) post-cast strip is closed：After the completion of the cage bar cleaning colligation of post-cast strip, poured after hidden qualified proceed by of inspecting for acceptance
Band closing；
3) combed lattice skeleton Dense mesh screen side form structure is welded：In concentrated processing welded reinforcement skeleton outside the venue, welding jail
Gu into bar frame, it installs steel plate for sealing water of first constructing with lower part, after skeleton welds, first lays rhombus segmented welding
Expanded metal lath is used as reinforcement measure together, re-lays steel wire Dense mesh screen, firm with galvanized wire and skeleton reinforcing steel bar colligation respectively；In combed lattice
Vertical strengthening steel slab is evenly arranged on the outside of structure formula skeleton, steel plate for sealing water connects with skeleton overlap joint, and with combed lattice skeletal point
Weld admittedly, steel plate for sealing water installs the solderable top combed lattice skeleton in rear and metal binding wire Dense mesh screen；
4) horizontal and oblique support lacing wire bar is installed：The pre-buried straight screw sleeve on vertical strengthening steel slab, wire anchorage is straight
As oblique iron wire support lacing wire bar in screw shell, side skeleton outside post-cast strip is held and produces pulling force to offset part lateral pressure,
The reinforced bar support added at post-cast strip, as triatic stay, while also serve as the support of steel plate for sealing water；
5) upper prefabricated board lifting with ribbing：After basement roof closes post-cast strip side form structure reinforcing bars colligation in advance and checks and accepts,
Carry out upper prefabricated board closing with ribbing；Cystosepiment is fixed on combed lattice skeleton, upper prefabricated board both sides with ribbing by with foam
The reserved overlap joint step of plate is connected, and the pre-buried connecting screw of cystosepiment, deformation adjustment pad is set at connecting screw, by connecting spiral shell
Bar fastens upper prefabricated board with ribbing, realizes post-cast strip pre- closing in advance；
6) drawing screw rod is hung in installation：It is pre-buried in prefabricated board on ribbing to hang drawing screw rod, by hanging drawing screw rod in upper prefabricated board with ribbing
Design quantity and position be drilled in advance can pass through hang draw screw rod aperture, hang draw screw rod one end first with nut and mountain type card it is pre-
First and screw rod is attached fixation, hangs and draws screw rod both ends to be provided with screw thread, hangs and draws welding seal ring among screw rod；
7) lower prefabricated board lifting with ribbing：Lower prefabricated board with ribbing is carried out just according to the position of lifting rope on the ground of basement
Lifting rope, is then carried out binding with hooked bar on lower prefabricated board with ribbing and is connected by position, will be with ribbing above with rope in post-cast strip
Lower prefabricated board is pulled, and drawing screw rod is hung in the bolt hole alignment on lower prefabricated board with ribbing, is hung after drawing screw rod to pass through lower prefabricated board with ribbing,
The mountain type card and nut for hanging and drawing screw rod lower end can be installed；
8) installation pours pump line：Pump line uses thin-wall steel tube, and pump line passes through the concrete pipe clamp that is embedded in advance in lower prefabricated board with ribbing
Built-in fitting is embedding firmly fixed, a pump line is set every a segment distance, after being corrected etc. perpendicularity, with the interim fixed pump of steel pipe diagonal brace
Pipe, it is using cement mortar that the groove between pump line and lower prefabricated board with ribbing is embedding dead after fixation；
9) backfill is constructed：Earthen backfill is manually shoveled in irrigation hole pump line surrounding, manually compaction in layers；
10) self-compacting concrete pours：Before concrete pumping pours, open reserved peep hole, pour water wetting concrete and
Template；Concrete pump pipe is all laid along post-cast strip in advance, and pipe construction is torn in the regression that draws near open；Each post-cast strip jacking connector
When locating concrete lift-up, such as find that concrete flows out adjacent connector, then stops pumping；During concrete lift-up, to reversed beam
Locate concrete cast elevation carrection, show whether concrete meets to pour into a mould requirement for height, pumping jacking, which pours, to be carried out continuously, and is interrupted
Time is no more than 30min；
11) concrete curing and form removable：Completed in concrete in 12h to water filling in concreting pipe, and to band
The reserved jacking pouring hole of prefabricated board is conserved using plastic cloth temporary enclosed under rib；Meanwhile sprayed water out of floor bottom mould plate stitch gap, make
Concrete moisture retention maintenance is no less than 14d；Post-cast strip concrete strength reaches form removable after original structure concrete strength.
The beneficial effects of the invention are as follows：
(1) it is pre- that the present invention closes post-cast strip side form structure in advance by ceiling plate, basement roof closes the concordant type in post-cast strip in advance
Making sheet structure and basement roof close post-cast strip and hang mould jacking pouring structure three parts composition in advance, can carry out basement in time
Waterproof construction and backfilling of earthwork work, solve the problems, such as that post-cast strip can not be closed for a long time, while accelerating construction progress
Narrow and small construction site has been obtained effective utilization, ensure that construction is smoothed out, reduce construction cost, improve production efficiency.
(2) present invention realizes combed lattice skeleton, expanded steel diamond mesh, steel wire Dense mesh screen, vertical strengthening steel slab, sealing
Steel plate being accurately positioned and fixing, while triatic stay and oblique iron wire support lacing wire bar set and be more prone to.
(3) basement roof closes the prefabricated harden structure of the concordant type in post-cast strip and uses upper prefabricated board with ribbing in advance, and the construction can be with
Thickness of slab is reduced, girt strip is integral prefabricated with prefabricated board；Post-cast strip both sides are pre- by the cystosepiment being fixed on combed lattice skeleton
Overlap joint step and groove, pre-buried connecting screw are stayed, prefabricated board reserves countersunk head screw rod hole, after setting deformation adjustment pad, passes through spiral shell
Bar fastens, and realizes post-cast strip pre- closing in advance；Upper prefabricated board with ribbing is concordant with basement roof face, and it is pre- to solve basement roof
Waterproof effect is poor at closing, top plate and perforated rebar collision problem.
(4) basement roof close in advance post-cast strip hang mould jacking pouring structure in lower prefabricated board with ribbing it is with ribbing by being embedded in advance
Hanging for upper prefabricated board draws screw rod to fix, and hangs and seal ring is set among drawing screw rod, the reserved jacking pouring hole of lower prefabricated board with ribbing, and pre-buried
Concrete pipe clamp built-in fitting, pump line are fixed by concrete pipe clamp built-in fitting, and post-cast strip is poured using self-compacting concrete jacking.Change biography
Full hall scaffold is set on system, the shortcomings that formwork cost is high and effect is low, waterproofing for basement and the earthwork can be carried out in time
Backfilling working, solve the problems, such as that post-cast strip can not be closed for a long time.
Brief description of the drawings
Fig. 1 is that basement roof of the present invention closes late poured band structure schematic diagram in advance；
Fig. 2 is that combed lattice skeleton is connected with expanded steel diamond mesh, steel wire Dense mesh screen, steel plate for sealing water, vertical strengthening steel slab
Figure；
Fig. 3 is combed lattice skeleton Dense mesh screen post-cast strip side form structural representation；
Fig. 4 is that upper prefabricated board with ribbing closes late poured band structure schematic diagram in advance；
Fig. 5 is construction process figure.
Description of reference numerals：1- combed lattices skeleton, 2- expanded steel diamond mesh, 3- steel wires Dense mesh screen, 4- vertically reinforce steel
The oblique iron wire support lacing wire bar of plate, 5- steel plate for sealing water, 6- triatic stays, 7-, 8- straight screw sleeves, 9- post-cast strips cage bar, 10- are with ribbing
Upper prefabricated board, 11- girt strips, 12- connecting screws, 13- deformation adjustments pad, 14- are hung draw screw rod, 15- seal rings, 16- with ribbing under
Prefabricated board, 17- pump lines, 18- cystosepiments, 19- concrete pipe clamp built-in fittings.
Embodiment
The present invention is described further with reference to embodiment.Following embodiments are served only for help and understand the present invention.It is right
In those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be improved,
These improvement are also fallen into the protection domain of the claims in the present invention.
As shown in Figures 1 to 4, the basement roof is closed late poured band structure and included in advance：Combed lattice skeleton 1, water chestnut
It is shape expanded metal lath 2, steel wire Dense mesh screen 3, vertical strengthening steel slab 4, steel plate for sealing water 5, triatic stay 6, oblique iron wire support lacing wire bar 7, straight
Screw shell 8, post-cast strip cage bar 9, upper prefabricated board 10 with ribbing, girt strip 11, connecting screw 12, deformation adjustment pad 13, hang drawing spiral shell
Bar 14, seal ring 15, lower prefabricated board 16 with ribbing, pump line 17, cystosepiment 18, concrete pipe clamp built-in fitting 19.
As shown in figure 1, after it is determined that post-cast strip shifts to an earlier date closure solutions and self-compacting concrete prioritization scheme, by design will
Upper prefabricated board 10 with ribbing prefabricated in advance and lower prefabricated board 16 with ribbing are asked, in the welding combed lattice of concentrated processing outside the venue skeleton 1, water chestnut
Shape expanded metal lath 2, steel wire Dense mesh screen 3, steel plate for sealing water 5, vertical strengthening steel slab 4, triatic stay 6 and oblique iron wire support lacing wire bar are installed
7, cystosepiment 18 is fixed on combed lattice skeleton 1, and the upper both sides of prefabricated board 10 with ribbing with cystosepiment 18 by reserving overlap joint platform
Rank is connected, the pre-buried connecting screw 12 of cystosepiment 18, and deformation adjustment pad 13 is set at connecting screw 12, is fastened by screw rod 12
Upper prefabricated board 10 with ribbing, on ribbing prefabricated board 10 it is pre-buried hang draw screw rod 14, lower prefabricated board 16 with ribbing by hang draw screw rod 14 with
Upper prefabricated board 10 with ribbing is solid to tensing, and hangs and sets seal ring 15 among drawing screw rod 14, the lower pre-buried concrete pipe clamp of prefabricated board 16 with ribbing is pre-buried
Part 19, pump line 17 are embedding firmly fixed by concrete pipe clamp built-in fitting 19.
As shown in Fig. 2 expanded steel diamond mesh 2, steel wire Dense mesh screen 3, steel plate for sealing water 5 are linked as using combed lattice skeleton 1
Overall, combed lattice skeleton 1 is evenly arranged vertical strengthening steel slab 4, and it is horizontal that steel plate for sealing water 5 is welded in combed lattice skeleton 1
On reinforcing bar.
As indicated at 3, combed lattice skeleton horizontal reinforcement and the colligation of post-cast strip cage bar 9 or is welded to connect about 1, is poured after
Band cavity sets triatic stay 6 and oblique iron wire support lacing wire bar 7, and triatic stay 6 and oblique iron wire support lacing wire bar 7 stay on vertical
On strengthening steel slab 4, pre-buried straight screw sleeve 8 on vertical strengthening steel slab 4, realize that triatic stay 6 and oblique iron wire support lacing wire bar 7
Hold out against regulation and fix.
As shown in figure 4, prefabricated board uses upper prefabricated board 10 with ribbing, upper prefabricated board 10 with ribbing has the high girt strips 11 of 25mm, should
Construction can reduce thickness of slab, and girt strip 11 and upper prefabricated board 10 with ribbing are integral prefabricated；Cystosepiment 18 is fixed on combed lattice skeleton 1
On, the upper both sides of prefabricated board 10 with ribbing with the reserved overlap joint step of cystosepiment 18 by being connected, the pre-buried connecting screw 12 of cystosepiment 18,
Deformation adjustment pad 13 is set at connecting screw 12, upper prefabricated board 10 with ribbing is fastened by connecting screw 12, realizes that post-cast strip carries
Preceding pre- closing.
The basement roof closes the construction method of late poured band structure in advance, comprises the following steps：
(1) material prepares：Framework of steel reinforcement, reinforcing bar diagonal brace, iron wire, galvanized wire, steel wire Dense mesh screen, expanded steel diamond mesh, water-stopping steel
Plate, electric welding machine, pump line, prefabricated board, vibrating head, small punching block, multi-layer sheet, screw rod, waterproof material, self-compacting concrete raw material,
The materials such as pumping equipment and equipment.
(2) prefabricated board is processed：According to the prefabricated board size of engineering post-cast strip width design, prefabricated board carries girt strip 11, coagulation
Native grade C35P8, reinforcing bar end are respectively provided with 90 ° of crotches, and prefabricated board is divided into upper prefabricated board 10 with ribbing and lower prefabricated board 16 with ribbing, band
Prefabricated board 16 is opened in plate center and pours mouth under rib, and the prefabricated board after shaping will carry out maintenance and finished product protection work, treat concrete
Intensity assembles up to 100% rear Liftable.
(3) post-cast strip is closed：Post-cast strip cage bar 9 is cleared up after the completion of colligation, after hidden qualified proceed by of inspecting for acceptance
Pour band closing.
(4) combed lattice skeleton Dense mesh screen side form structure is welded：In concentrated processing welded reinforcement skeleton outside the venue, welding jail
Gu being welded into bar frame according to sectional easy for construction, it is installed first construction steel plate for sealing water 5 and welded with lower part, skeleton
Bi Hou, first lay expanded steel diamond mesh 2 and be used as reinforcement measure one, steel wire Dense mesh screen 3 is re-layed, respectively with galvanized wire and skeleton reinforcing steel bar
Colligation is firm.Vertical strengthening steel slab 4 is evenly arranged in the outside of combed lattice skeleton 1, steel plate for sealing water 5 connects with skeleton overlap joint,
Lap position answers full weld, does not stay dead angle, and firm with 1 spot welding of skeleton of combed lattice, and it is solderable that steel plate for sealing water 5 installs rear
Connect portion's combed lattice skeleton 1 and metal binding wire Dense mesh screen 3.
(5) horizontal and oblique support lacing wire bar is installed：The pre-buried straight screw sleeve 8 on vertical strengthening steel slab 4, wire anchorage exists
As oblique iron wire support lacing wire bar 7 in straight screw sleeve 8, side skeleton outside post-cast strip is held and produces pulling force to offset part side pressure
Power, the reinforced bar support added at post-cast strip, as triatic stay 6, to offset coagulation earth lateral pressure, while can also conduct
The support of steel plate for sealing water 5.
(6) upper prefabricated board lifting with ribbing：After basement roof closes post-cast strip side form structure reinforcing bars colligation in advance and checks and accepts,
Upper prefabricated board 10 with ribbing is carried out to close.Cystosepiment 18 is fixed on combed lattice skeleton 1, and the upper both sides of prefabricated board 10 with ribbing pass through
It is connected with the reserved overlap joint step of cystosepiment 18, the pre-buried connecting screw 12 of cystosepiment 18, deformation adjustment is set at connecting screw 12
Pad 13, upper prefabricated board 10 with ribbing is fastened by connecting screw 12, realize post-cast strip pre- closing in advance.
(7) drawing screw rod is hung in installation：Pre-buried hang draws screw rod 14 in prefabricated board 10 on ribbing, by hanging in upper prefabricated board 10 with ribbing
The design quantity of screw rod 14 and position is drawn to be drilled can hang through the aperture for hanging drawing screw rod 14 and draw one end of screw rod 14 first to use spiral shell in advance
Female and mountain type card is in advance and screw rod is attached fixation, hangs thickness, bearing up-down force bar of the length of drawing screw rod 14 according to post-cast strip
Part size and design margin are determined, and are hung and are drawn the both ends of screw rod 14 to be provided with screw thread, are hung and are drawn welding seal ring 15 among screw rod 14, with
Rainwater-proof draws the contact surface of screw rod 14 and concrete to penetrate into interior by hanging.
(8) lower prefabricated board lifting with ribbing：Lower prefabricated board 16 with ribbing is carried out according to the position of lifting rope on the ground of basement
In place, lifting rope is then carried out binding with hooked bar on lower prefabricated board 16 with ribbing to be connected, operating personnel are led on post-cast strip
Cross rope to pull lower prefabricated board 16 with ribbing, the bolt hole alignment on lower prefabricated board 16 with ribbing, which is hung, draws screw rod 14, hangs drawing screw rod
After 14 pass through lower prefabricated board 16 with ribbing, you can the mountain type card and nut for drawing the lower end of screw rod 14 are hung in installation.Treat that all stress steel pipes are complete
It must also again be fastened after portion is in place and hang the nut for drawing the upper and lower side of screw rod 14 once, it is to be checked errorless rear with 1:2 pointings with cement mortar, two
End with C25 pea gravel concretens look for triangle and with adjacent floor deck Shunping County, to do waterproof coiled material.
(9) installation pours pump line：Pour pump line 17 and use thin-wall steel tube, pour pump line 17 by be embedded in advance it is with ribbing under it is prefabricated
Concrete pipe clamp built-in fitting 19 in plate 16 is embedding firmly fixed, sets a pump line 17 every a segment distance, after being corrected etc. perpendicularity, uses steel
Pipe diagonal brace fixes pump line 19 temporarily, after fixed, in time using cement mortar by between pump line 17 and lower prefabricated board 16 with ribbing
Groove it is embedding dead.
(10) backfill is constructed：In the surrounding of irrigation hole pump line 17, not handy bull-dozer, scraper banket, not handy pressure road
Machine is compacted；Earthen backfill can only be manually shoveled, manually compaction in layers, in order to avoid precast rc slab is squeezed inclined.
(11) self-compacting concrete pours：Before concrete pumping pours, open reserved peep hole, pour water wetting concrete and
Template, self-compacting concrete dehydration is prevented, influences mobility.Concrete pump pipe 17 is all laid along post-cast strip in advance, by remote and
Pipe construction is torn in nearly regression open, reduces the adapter time.At each post-cast strip jacking connector during concrete lift-up, concrete outflow is found
Adjacent connector, then stop pumping, during concrete lift-up, elevation carrection is poured into a mould to concrete at reversed beam, using high brightness
Flashlight illuminates observation, and combined use spirit level, Sopwith staff copy the high method of mark, show whether concrete meets that cast height will
Ask, pumping jacking is poured and should be carried out continuously, and the break period is no more than 30min.
(12) concrete curing and form removable：Complete in 12h to water filling in concreting pipe, and tackle in concrete
The reserved jacking pouring hole of lower prefabricated board 16 with ribbing is conserved using plastic cloth temporary enclosed.Meanwhile sprayed out of floor bottom mould plate stitch gap
Water, concrete moisture retention maintenance is set to be no less than 14d.Post-cast strip concrete strength reaches the 100% of original structure concrete strength, can
By form removable, specific striking time is defined by post-cast strip test cube in the same condition test report.
Claims (3)
1. a kind of basement roof closes late poured band structure in advance, it is characterised in that including：Basement roof closes post-cast strip side in advance
Mode structure, basement roof close the prefabricated harden structure of the concordant type in post-cast strip in advance and basement roof closes post-cast strip and hangs mould jacking in advance
Pouring structure；Basement roof closes post-cast strip side form structure in advance includes combed lattice skeleton (1), expanded steel diamond mesh (2), steel
Silk Dense mesh screen (3), vertical strengthening steel slab (4), steel plate for sealing water (5), triatic stay (6), oblique iron wire support lacing wire bar (7) and straight spiral shell
Line sleeve (8)；Basement roof closes the prefabricated harden structure of the concordant type in post-cast strip in advance includes post-cast strip cage bar (9), with ribbing prefabricated
Plate (10), cystosepiment (18), connecting screw (12), deformation adjustment pad (13) and hang draw screw rod (14)；Basement roof seals in advance
Closing post-cast strip and hanging mould jacking pouring structure includes upper prefabricated board (10) with ribbing, hangs and draw screw rod (14), seal ring (15), with ribbing lower pre-
Making sheet (16), pump line (17) and concrete pipe clamp built-in fitting (19)；
Expanded steel diamond mesh (2), steel wire Dense mesh screen (3) and steel plate for sealing water (5) are linked as by entirety using combed lattice skeleton (1),
Combed lattice skeleton (1) is evenly arranged vertical strengthening steel slab (4), and horizontal reinforcement pours combed lattice skeleton (1) with after up and down
Band cage bar (9) colligation is welded to connect, and steel plate for sealing water (5) is welded on combed lattice skeleton (1) horizontal reinforcement；In post-cast strip
Cavity sets triatic stay (6) and oblique iron wire support lacing wire bar (7), and triatic stay (6) and oblique iron wire support lacing wire bar (7) are shored
In on vertical strengthening steel slab (4), pre-buried straight screw sleeve (8) on vertical strengthening steel slab (4), triatic stay (6) and oblique is realized
Holding out against for iron wire support lacing wire bar (7) is adjusted and fixed；
Prefabricated board uses upper prefabricated board (10) with ribbing, and upper prefabricated board (10) with ribbing has a girt strip (11), girt strip (11) with it is with ribbing pre-
Making sheet (10) is integral prefabricated；Cystosepiment (18) is fixed on combed lattice skeleton (1), and upper prefabricated board (10) both sides with ribbing pass through
It is connected with the reserved overlap joint step of cystosepiment (18), cystosepiment (18) pre-buried connecting screw (12), is set at connecting screw (12) place
Deformation adjustment pad (13), upper prefabricated board (10) with ribbing is fastened by connecting screw (12)；
Post-cast strip lower prefabricated board (16) with ribbing draws screw rod (14) fixed by being embedded in hanging for upper prefabricated board (10) with ribbing in advance, under with ribbing
Prefabricated board (16) draws screw rod (14) solid to tensing with upper prefabricated board (10) with ribbing by hanging, and hangs and sets seal ring among drawing screw rod (14)
(15), the pre-buried concrete pipe clamp built-in fitting (19) of lower prefabricated board (16) with ribbing, pump line (17) are fixed by concrete pipe clamp built-in fitting (19).
2. basement roof according to claim 1 closes late poured band structure in advance, it is characterised in that upper prefabricated board with ribbing
(10) it is concordant with basement roof face, girt strip (11) and post-cast strip cage bar (9) build-in.
3. a kind of basement roof as claimed in claim 1 closes the construction method of late poured band structure in advance, comprise the following steps：
1) prefabricated board is processed：According to the prefabricated board size of engineering post-cast strip width design, prefabricated board carries girt strip (11), reinforcing bar end
90 ° of crotches are respectively provided with, prefabricated board is divided into upper prefabricated board (10) with ribbing and lower prefabricated board with ribbing (16), and lower prefabricated board (16) with ribbing exists
Plate center, which is opened, pours mouth；
2) post-cast strip is closed：After the completion of post-cast strip cage bar (9) cleaning colligation, qualified post-cast strip is proceeded by through hidden inspect for acceptance
Closing；
3) combed lattice skeleton Dense mesh screen side form structure is welded：In concentrated processing welded reinforcement skeleton outside the venue, firm welding, divide
Section is welded into bar frame, and it installs steel plate for sealing water (5) of first constructing with lower part, after skeleton welds, first lays rhombus steel
Expanded metals (2) is used as reinforcement measure together, re-lays steel wire Dense mesh screen (3), firm with galvanized wire and skeleton reinforcing steel bar colligation respectively；Combing
Vertical strengthening steel slab (4) is evenly arranged on the outside of type lattice skeleton (1), steel plate for sealing water (5) connects with skeleton overlap joint, and and combed
Lattice skeleton (1) spot welding is firm, and steel plate for sealing water (5) installs the solderable top combed lattice skeleton (1) in rear and tied up
Prick steel wire Dense mesh screen (3)；
4) horizontal and oblique support lacing wire bar is installed：The pre-buried straight screw sleeve (8) on vertical strengthening steel slab (4), wire anchorage exists
As oblique iron wire support lacing wire bar (7) in straight screw sleeve (8), side skeleton outside post-cast strip is held and produces pulling force to offset part
Lateral pressure, the reinforced bar support added at post-cast strip, as triatic stay (6), while also serve as the support of steel plate for sealing water (5)；
5) upper prefabricated board lifting with ribbing：After basement roof closes post-cast strip side form structure reinforcing bars colligation in advance and checks and accepts, carry out
Upper prefabricated board (10) closing with ribbing；Cystosepiment (18) is fixed on combed lattice skeleton (1), upper prefabricated board (10) both sides with ribbing
By being connected with the reserved overlap joint step of cystosepiment (18), cystosepiment (18) pre-buried connecting screw (12), at connecting screw (12) place
Deformation adjustment pad (13) is set, upper prefabricated board (10) with ribbing is fastened by connecting screw (12), realizes post-cast strip pre- envelope in advance
Close；
6) drawing screw rod is hung in installation：Pre-buried hang draws screw rod (14) in prefabricated board (10) on ribbing, is pressed in upper prefabricated board (10) with ribbing
Hang and draw the design quantity of screw rod (14) and position to be drilled can hang through the aperture for hanging drawing screw rod (14) and draw the one of screw rod (14) in advance
End first with nut and mountain type card in advance and screw rod is attached fixation, hang drawing screw rod (14) both ends and be provided with screw thread, hang drawing screw rod
(14) welding seal ring (15) among；
7) lower prefabricated board lifting with ribbing：Lower prefabricated board (16) with ribbing is carried out just according to the position of lifting rope on the ground of basement
Lifting rope, is then carried out binding with hooked bar on lower prefabricated board (16) with ribbing and is connected by position, will above with rope in post-cast strip
Lower prefabricated board (16) with ribbing pulls, and the bolt hole alignment on lower prefabricated board (16) with ribbing, which is hung, draws screw rod (14), hangs drawing screw rod
(14) after passing through lower prefabricated board (16) with ribbing, you can the mountain type card and nut for drawing screw rod (14) lower end are hung in installation；
8) installation pours pump line：Pump line (17) uses thin-wall steel tube, and pump line (17) by being embedded in lower prefabricated board (16) with ribbing in advance
Concrete pipe clamp built-in fitting (19) it is embedding firmly fixed, a piece pump line (17) is set every a segment distance, after being corrected etc. perpendicularity, uses steel pipe
Diagonal brace fixes pump line (17) temporarily, after fixation, using cement mortar by between pump line (17) and lower prefabricated board with ribbing (16)
Groove it is embedding dead；
9) backfill is constructed：In irrigation hole pump line (17), surrounding manually shovels earthen backfill, manually compaction in layers；
10) self-compacting concrete pours：Before concrete pumping pours, reserved peep hole is opened, pour water wetting concrete and template；
Concrete pump pipe (17) is all laid along post-cast strip in advance, and pipe construction is torn in the regression that draws near open；Each post-cast strip jacking connector
When locating concrete lift-up, such as find that concrete flows out adjacent connector, then stops pumping；During concrete lift-up, to reversed beam
Locate concrete cast elevation carrection, show whether concrete meets to pour into a mould requirement for height, pumping jacking, which pours, to be carried out continuously, and is interrupted
Time is no more than 30min；
11) concrete curing and form removable：Completed in concrete in 12h to water filling in concreting pipe, and under with ribbing
The reserved jacking pouring hole of prefabricated board (16) is conserved using plastic cloth temporary enclosed；Meanwhile sprayed water out of floor bottom mould plate stitch gap, make
Concrete moisture retention maintenance is no less than 14d；Post-cast strip concrete strength reaches form removable after original structure concrete strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711249075.3A CN107806114A (en) | 2017-12-01 | 2017-12-01 | Basement roof closes late poured band structure and construction method in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711249075.3A CN107806114A (en) | 2017-12-01 | 2017-12-01 | Basement roof closes late poured band structure and construction method in advance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107806114A true CN107806114A (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711249075.3A Withdrawn CN107806114A (en) | 2017-12-01 | 2017-12-01 | Basement roof closes late poured band structure and construction method in advance |
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| Country | Link |
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| CN (1) | CN107806114A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108396985A (en) * | 2018-03-29 | 2018-08-14 | 广州地铁设计研究院有限公司 | Holes blocking precast construction and holes blocking structure |
| CN108842826A (en) * | 2018-07-05 | 2018-11-20 | 中建七局第四建筑有限公司 | Pre-seal structure of post-subsidence pouring belt and its construction method |
| CN108915246A (en) * | 2018-06-25 | 2018-11-30 | 中国建筑第八工程局有限公司 | Keyway scaffold top overhangs bar reinforcement structure |
| CN111042524A (en) * | 2019-12-14 | 2020-04-21 | 中冶天工集团有限公司 | Method for plugging floor post-cast strip and arranging cover plate |
| CN115419109A (en) * | 2022-10-19 | 2022-12-02 | 福建省顺安建筑工程有限公司 | Basement post-cast strip structure and construction method thereof |
-
2017
- 2017-12-01 CN CN201711249075.3A patent/CN107806114A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108396985A (en) * | 2018-03-29 | 2018-08-14 | 广州地铁设计研究院有限公司 | Holes blocking precast construction and holes blocking structure |
| CN108396985B (en) * | 2018-03-29 | 2023-11-24 | 广州地铁设计研究院股份有限公司 | Hole plugging structure |
| CN108915246A (en) * | 2018-06-25 | 2018-11-30 | 中国建筑第八工程局有限公司 | Keyway scaffold top overhangs bar reinforcement structure |
| CN108915246B (en) * | 2018-06-25 | 2020-06-09 | 中国建筑第八工程局有限公司 | Key slot scaffold top cantilever bar additional strengthening |
| CN108842826A (en) * | 2018-07-05 | 2018-11-20 | 中建七局第四建筑有限公司 | Pre-seal structure of post-subsidence pouring belt and its construction method |
| CN111042524A (en) * | 2019-12-14 | 2020-04-21 | 中冶天工集团有限公司 | Method for plugging floor post-cast strip and arranging cover plate |
| CN115419109A (en) * | 2022-10-19 | 2022-12-02 | 福建省顺安建筑工程有限公司 | Basement post-cast strip structure and construction method thereof |
| CN115419109B (en) * | 2022-10-19 | 2023-08-25 | 福建省顺安建筑工程有限公司 | Basement post-pouring belt structure and construction method thereof |
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Application publication date: 20180316 |
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