CN110439002A - A kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab - Google Patents
A kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab Download PDFInfo
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- CN110439002A CN110439002A CN201910648424.1A CN201910648424A CN110439002A CN 110439002 A CN110439002 A CN 110439002A CN 201910648424 A CN201910648424 A CN 201910648424A CN 110439002 A CN110439002 A CN 110439002A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 claims abstract description 46
- 238000009412 basement excavation Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 210000003205 muscle Anatomy 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000009416 shuttering Methods 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000007943 implant Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000011120 plywood Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 235000011194 food seasoning agent Nutrition 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- 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
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- Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention provides a kind of method of the interim horizontal structure of inner support as permanent structure beam slab, this method is in excavation of foundation pit staged construction inner support, using inner support as structural slab after the completion of excavation of foundation pit, making the support plate in pattern foundation pit supporting structure stage becomes basement permanent structure plate, is combined into one inner support horizontal structure with basement floor construction.Need to remove to solve the interim horizontal structure of existing inner support in underground structure process of construction or after building up, consume a large amount of human and material resources, and generate a large amount of building waste, not only waste of resource but also not environmentally the problem of.Belong to technical field of building construction.
Description
Technical field
The present invention relates to the methods that a kind of interim horizontal structure of inner support is used as permanent structure beam slab, belong to construction skill
Art field.
Background technique
Present urban construction has many local peripheries all to build up, and the number of plies that newly-built building basement is built is more, excavates base
When hole, foundation pit is very deep but cannot use the support pattern that anchor pole is beaten to outside foundation pit, typically uses the support pattern of inner support,
There are the pattern foundation pit supporting structures modes such as stake+inner support, interlocking pile+inner support, diaphram wall+inner support, these inner supports mostly use greatly
Concrete beam and board structure, after pit earthwork excavates on earth, when building up in layer with underground structure, these are only
The interim horizontal structure of inner support that excavation of foundation pit carries out supporting will be cut, and cutting the interim horizontal structure of these inner supports can consume
A large amount of human and material resources, and generate a large amount of building waste, not only waste of resource but also not environmentally.
Summary of the invention
The present invention provides a kind of method of the interim horizontal structure of inner support as permanent structure beam slab, to solve existing interior branch
It supports interim horizontal structure to need to remove during Underground Construction or after building up, consumes a large amount of human and material resources, and produce
Raw a large amount of building waste, not only waste of resource but also not environmentally the problem of.
To solve the above problems, the interim horizontal structure of such a inner support of proposed adoption is used as the side of permanent structure beam slab
Inner support is constructed as beam slab or plank frame, is completed in excavation of foundation pit in excavation of foundation pit staged construction inner support by method, this method
Afterwards using inner support as structural slab, the support plate of construction stage is made to become basement permanent structure plate, ties inner support and underground
Structure plate is combined into one.
The innovation transformation of fagging: pass through the combination of horizontal inner support construction plan and building basement floor construction plane
It with optimization, obtains not only making pattern foundation pit supporting structure horizontal supporting plate, but also can be used for the fagging structural working drawing of basement structure floor, this
Fagging meets the stress as the horizontal inner support of foundation pit and the stress as basement structure floor simultaneously, also meets and is used as underground
Each profession that the building of room floor, structure, plumbing, electrical, HVAC, fire-fighting, people's air defense, intelligence etc. can relate to is wanted
It asks.
Specific step is as follows for the above method:
1) cushion construction
When the elevation location of earth excavation to fagging, cushion construction is carried out, using the lower section soil body as bearing load
Main body makes it meet design bearing capacity requirement by reinforcing to ground；
2) interleaving agent is constructed
Before assembling reinforcement, the brushing interleaving agent on bed course in advance；
3) fagging is connect with fender post reinforcing bar
Fagging construction before, fender post surface is handled, on fender post carry out fagging reinforcing steel implant, make fagging with
Fender post closely connects, the globality of enhancing structure；
4) structural column is constructed and is connect with support plate reinforcing bar
Construction procedure are as follows: the earthwork is smooth → cushion construction → line setting → pilot hole → insertion reinforcing bar → bolumn cap construction →
It is next for positioning stirrup → set column tie-bar → vertical applied force muscle connection → bandage muscle → carry out that well word muscle is welded on stem lattice column
Procedure；
5) template is installed
6) fagging concreting.
Above-mentioned steps 4) in:
1. bolumn cap is constructed: inner support is arranged to the form of arch without beam, and bolumn cap is arranged in lattice column and fagging position；
2. stirrup positions: well word muscle is welded on lattice column according to column position, after positioning stirrup and the binding securely of well word muscle
Carry out the connection of column main reinforcement；
3. structural column Vertical bar connection: lattice column is when reinforcing bar connects elevationally outward, bar diameter D >=Ф 20 in column, steel
Muscle connector squeezes sleeve connection using straight thread, and at bolumn cap position, lattice column surrounding electricity consumption drill hole is put in fagging work progress
Enter reinforcing bar, reinforcing bar insertion depth is from bolumn cap bottom end 1m, according to layout design and the straight spiral shell of code requirement after earth excavation
Line sleeve is by upper layer and lower layer pressed splice；
4. lattice column and fagging node processing: d=19, L=100 are welded in lattice column and fagging junction on lattice column,
Spacing is the peg of 100mm, and steel bracket under beam is arranged at basement driving channel, and steel bracket and lattice column pass through the company of being fully welded
It connects；
5. structural column concreting: stayed at the top of bolumn cap and set concrete pouring hole, using vibrate in lattice column+template outside
Auxiliary is vibrated to guarantee concrete pouring quality；
It has constructed and fagging and has excavated under fagging after the earthwork, first cleaned lattice column iron rust with steel brush, and using 32.5
Ordinary portland cement prepares plain-water slurry, then successively smears lattice column from top to bottom；
Above-mentioned steps 5) in:
1. fagging lower template: using clay model as the main body of bearing load when fagging structure construction, extremely by earth excavation first
Predetermined absolute altitude, leveling, compacting, first pours bed course, in this, as support shuttering under concrete fagging, then in bed course on clay model
Upper binding beam reinforced steel bar, casting beams board concrete；
2. side bar template install: side bar using reversed beam design, on the inside of side bar carry out template installation when as follows with
Measure carries out installation reinforcing: limit steel bar is arranged in mouth under template, controls mouth absolute altitude under template, keeps it high by one with floor top mark
It causes；Limit steel bar is set in supporting steel pipe lower end, it is made not generate displacement and deformation in support shuttering；
3. ring beam template is installed
When circular rings beam forms on the outside of structural slab is installed: template absolute altitude suitable for reading is accurately positioned, makes it in same level
On；Shuttering supporting is firm, carries out diagonal brace using steel pipe, together every 1 meter of setting；Template construct is installed to board bottom absolute altitude, suitable for reading
Reserved 300mm, is blocked with steel fabric sheet, for reserving structural slab reinforcing bar；When ring beam concreting, special messenger is arranged to be responsible for adjustment
As artificially trample and impact force that when concreting generates and caused by template dislocation, deformation；
Above-mentioned steps 6) in:
1. the greasy dirt on sundries and reinforcing bar in template need to be cleaned out, the gap of template and hole are stifled tight；
2. beam, board concrete pour simultaneously, casting method by one end with " catching up with slurry processes " i.e. first casting beams, according to deck-molding
Placement layer by layer is at stairstepping, when the concrete for reaching board bottom position Shi Zaiyu plate pours together；
3. after concreting to designed elevation, vibrating head vibration compacting is struck off with long floating rule, concreting 2~
It after 3h, is rolled with iron roller and is compacted several times repeatedly, smeared and flattened with finisher, after waiting concrete to receive water, second again before final set
With finisher screeding and compaction repeatedly；
4. being covered in time within 12h after concreting, sprinkling maintenance；
5. reaching requirement of strength design to this layer of fagging, continue earth excavation, carries out lower plywood construction.
Compared with prior art, the present invention transform the interim horizontal structure of existing pattern foundation pit supporting structure as permanent structure, interim water
Flat structure carries out certain Deepen Design, allows this interim horizontal structure in excavation of foundation pit, horizontal support effect is played, in underground
In the construction of room again can as permanent beam, hardened structure, by the combination of inner support plane and building basement floor level with it is excellent
Change, pattern foundation pit supporting structure horizontal supporting plate can not only be made by obtaining this, but also can be used for basement structure floor；There is no interim horizontal structure
It cuts, saves the construction time, save the artificial and measure cut, do not generate the building wastes such as concrete quarrel, built without outward transport
The expense of building refuse；The interim horizontal structure of pattern foundation pit supporting structure is used as permanent structure, economizes on resources, environment-friendly and green.
Detailed description of the invention
Fig. 1 is inner support of the present invention/underground structure plate structural schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, it should be understood that described herein specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Embodiment
Referring to Fig.1, the present embodiment provides the methods that a kind of interim horizontal structure of inner support is used as permanent structure beam slab, will be interior
Support is combined into one with underground structure plate, the stress under two kinds of operating conditions is considered, in the excavation of foundation pit stage as inner support, by interior branch
Support construction is beam slab or plank frame, is structural slab after the completion of excavation of foundation pit, avoids removing because of temporary support or support replacement is drawn
It plays support system Internal Force Redistribution and causes the displacement of foundation pit and deformation or the unexpected off-load of concrete support that will produce to ambient enviroment
Raw influence.Making the support plate of construction stage becomes basement permanent structure plate, to realize that inner support and basement structure plate are closed
One.It solves the safety problem for carrying out foundation pit operation in city high rise building dense, reduces the cost of construction gib, shorten
Construction period.
Concrete construction method is as follows:
1) cushion construction
When the elevation location of earth excavation to fagging, with regard to carrying out cushion construction, before each section of cushion construction, Ying Tiqian is carried out
This section of base's measurement and positioning work, location base axis accurately control bed course bottom absolute altitude.Make full use of the lower section soil body as receiving
The main body of load makes it meet design bearing capacity requirement: cushion construction thickness 100mm, strong concrete by reinforcing to ground
Spend grade C15.It is buried in bed course and pulls U-shaped ring, after blinding concrete final set, reinforce water seasoning.It prevents from artificially trampleing on broken
Bad concrete surface should ensure that its surface quality meets related request, and people's walking can be just gone up after intensity reaches 1.2MPa.
2) interleaving agent is constructed
In order to enable structure floor to be detached from bed course, the presentation quality of structure is not influenced, according to the actual situation, in binding steel
Before muscle, the brushing interleaving agent on bed course in advance, when pulling the U-shaped ring in bed course, so that bed course and structural slab can preferably take off
From.Interleaving agent construction precautions:
1. first removing sundries before interleaving agent brushing, mat surface is cleaned out；
2. coating is strictly watered reconciliation in defined ratio and uses；
3. coating is sprayed on bed course with spray gun or hairbrush after mixing evenly, brushes uniformly, avoid holiday；
4. it must be professional's construction operation, Ying little Xin when brushing, pre- anti-slip；
5. the rainy day is avoided to brush, if encountering the rainy day, brush should be mended in time before reinforcing bar is bound；
3) fagging is connect with fender post reinforcing bar
Before fagging construction, fender post surface need to be handled, fagging reinforcing steel implant is carried out on fender post, makes fagging
It is closely connect with fender post, the globality of enhancing structure.
4) structural column is constructed and is connect with support plate reinforcing bar
Construction procedure are as follows: the earthwork is smooth → cushion construction → line setting → pilot hole → insertion reinforcing bar → bolumn cap construction →
Well word muscle (up and down each one) is welded on stem lattice column for positioning stirrup → set column tie-bar → vertical applied force muscle connection → bandage
Muscle → carry out next process
1. bolumn cap is constructed: this inner support is arranged to the form of arch without beam, and bolumn cap is arranged in lattice column and fagging position, can
Solve the problems, such as fagging Punching Shear at column；Reduce the effective span of fagging；Reduce seat shoulder bar.
2. stirrup positions: welding well word muscle on lattice column according to column position.After stirrup and the binding securely of well word muscle will be positioned
Carry out the connection of column main reinforcement.Structure column tie-bar can be passed through from the gap between lattice column angle steel, can when stirrup meets lattice column batten plate
Punching (aperture is bar diameter+2mm) passes through on batten plate.
3. structural column Vertical bar connection: lattice column is when reinforcing bar connects elevationally outward, to guarantee project progress and quality, column
Middle bar diameter D >=Ф 20, splice squeeze sleeve connection using straight thread.In bolumn cap portion in every layer of fagging work progress
Position lattice column surrounding electricity consumption drill hole is put into reinforcing bar, and reinforcing bar insertion depth is from bolumn cap bottom end 1m.The basis after earth excavation
Layout design and code requirement straight screw sleeve are by upper layer and lower layer pressed splice.
4. lattice column and fagging node processing: d=19, L=100 are welded in lattice column and fagging junction on lattice column,
Spacing is the peg of 100mm.Increase the cohesive force with floor by peg.Steel support under beam is set at basement driving channel
Frame, steel bracket are connect with lattice column by being fully welded.
5. structural column concreting: since column core has lattice column influence, vibrating spear and lattice are inserted into structural column two sides
Gap between column is vibrated difficulty, therefore is stayed at the top of bolumn cap and set concrete pouring hole, using vibrate in lattice column+template outside assist
It vibrates to guarantee concrete pouring quality.
After inner support plate of having constructed, lattice column iron rust first is cleaned with steel brush, and using 32.5 ordinary portland cement
Plain-water slurry is prepared, then successively smears lattice column from top to bottom, to avoid the corrosion of lattice column.Structural column concreting
When in top end, 2 casings are diagonally set, it is ensured that concrete pouring quality.
5) template is installed
1. fagging lower template: inner support contignation applies main body of the utilization of hour clay model as bearing load, first by the earthwork
It is excavated to predetermined absolute altitude, leveling, compacting first pour bed course, in this, as support shuttering under concrete fagging on clay model.Then
Beam reinforced steel bar, casting beams board concrete are bound on bed course.
2. side bar template is installed: side bar carries out pressing when template installation on the inside of side bar as follows due to designing using reversed beam
Method and measure carry out installation reinforcing:
Limit steel bar is arranged in mouth under template, controls mouth absolute altitude under template, keeps it high consistent with floor top mark.
Limit steel bar is set in supporting steel pipe lower end, it is made not generate displacement and deformation in support shuttering.
3. ring beam template is installed
It should be noted that template absolute altitude suitable for reading is accurately positioned when circular rings beam forms on the inside of fagging is installed, make it in same water
In plane；Shuttering supporting wants firm, carries out diagonal brace using steel pipe, together every 1 meter of setting；Template construct is installed to board bottom mark
Height, reserved 300mm suitable for reading, is blocked with steel fabric sheet, for reserving structural slab reinforcing bar；When ring beam concreting, it should arrange specially
People be responsible for adjusting as artificially trample and impact force that when concreting generates and caused by template dislocation, deformation.
6) fagging concreting
1. greasy dirt on sundries and reinforcing bar in template etc. should be cleaned out, the gap of template and hole should be blocked up sternly.
2. beam, board concrete should pour simultaneously, casting method by one end with " catching up with slurry processes " i.e. first casting beams, according to beam
High stratification, which pours, builds up stairstepping, when the concrete for reaching board bottom position Shi Zaiyu plate pours together.
3. after concreting to designed elevation, vibrating head vibration compacting is struck off with long floating rule, concreting 2~
It after 3h, is rolled with iron roller and is compacted several times repeatedly, smeared and flattened with finisher, after waiting concrete to receive water, second again before final set
With finisher screeding and compaction repeatedly.
4. being covered in time within 12h after concreting, sprinkling maintenance.
5. reaching requirement of strength design to this layer of support plate, continue earth excavation, carries out lower plywood construction.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab, it is characterised in that: this method is opened in foundation pit
Staged construction inner support is dug, inner support construct as beam slab or plank frame, using inner support as tying after the completion of excavation of foundation pit
Structure plate makes the support plate of construction stage become basement permanent structure plate, inner support and underground structure plate is combined into one.
2. a kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab according to claim 1, feature exists
In specific step is as follows for the above method:
1) cushion construction
When the elevation location of earth excavation to fagging, cushion construction is carried out, using the lower section soil body as the main body of bearing load,
By reinforcing to ground, it is made to meet design bearing capacity requirement；
2) interleaving agent is constructed
Before assembling reinforcement, the brushing interleaving agent on bed course in advance；
3) fagging is connect with fender post reinforcing bar
Before fagging construction, fender post surface is handled, fagging reinforcing steel implant is carried out on fender post, makes fagging and goes along with sb. to guard him
The close connection of stake, the globality of enhancing structure；
4) structural column is constructed and is connect with support plate reinforcing bar
Construction procedure are as follows: the earthwork is smooth → cushion construction → line setting → pilot hole → insertion reinforcing bar → bolumn cap construction → in stem
Well word muscle is welded on lattice column carries out down one of work for positioning stirrup → set column tie-bar → vertical applied force muscle connection → bandage muscle →
Sequence；
5) template is installed
6) fagging concreting.
3. a kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab according to claim 2, feature exists
In above-mentioned steps 4) in:
1. bolumn cap is constructed: inner support is arranged to the form of arch without beam, and bolumn cap is arranged in lattice column and fagging position；
2. stirrup positions: welding well word muscle on lattice column according to column position, will be carried out after positioning stirrup and the binding securely of well word muscle
The connection of column main reinforcement；
3. structural column Vertical bar connection: when reinforcing bar connects elevationally outward, bar diameter D >=Ф 20 in column, reinforcing bar connects lattice column
Head squeezes sleeve connection using straight thread, and at bolumn cap position, lattice column surrounding electricity consumption drill hole is put in every layer of fagging work progress
Enter reinforcing bar, reinforcing bar insertion depth is from bolumn cap bottom end 1m, according to layout design and the straight spiral shell of code requirement after earth excavation
Line sleeve is by upper layer and lower layer pressed splice；
4. lattice column and fagging node processing: d=19, L=100, spacing are welded in lattice column and fagging junction on lattice column
For the peg of 100mm, steel bracket under beam is set at basement driving channel, steel bracket is connect with lattice column by being fully welded；
5. structural column concreting: stayed at the top of bolumn cap and set concrete pouring hole, using vibrate in lattice column+template outside assist
It vibrates to guarantee concrete pouring quality；
Constructed and fagging and excavated under fagging after the earthwork, first cleaned lattice column iron rust with steel brush, and using 32.5 it is common
Portland cement prepares plain-water slurry, then successively smears lattice column from top to bottom.
4. a kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab according to claim 2, feature exists
In above-mentioned steps 5) in:
1. fagging lower template: using clay model as the main body of bearing load when fagging structure construction, first by earth excavation to predetermined
Absolute altitude, leveling, compacting, first pours bed course on clay model, in this, as support shuttering under concrete fagging, then ties up on bed course
Prick beam reinforced steel bar, casting beams board concrete；
2. side bar template is installed: side bar is designed using reversed beam, on the inside of side bar when progress template installation as follows and measure
Carry out installation reinforcing: limit steel bar is arranged in mouth under template, controls mouth absolute altitude under template, keeps it high consistent with floor top mark；In
Limit steel bar is arranged in supporting steel pipe lower end, it is made not generate displacement and deformation in support shuttering；
3. ring beam template is installed
When circular rings beam forms on the outside of structural slab is installed: template absolute altitude suitable for reading is accurately positioned, makes it in same level；Mould
Plate support is firm, carries out diagonal brace using steel pipe, together every 1 meter of setting；Template construct is installed to board bottom absolute altitude, suitable for reading reserved
300mm is blocked with steel fabric sheet, for reserving structural slab reinforcing bar；When ring beam concreting, arrange special messenger be responsible for adjustment due to
Artificially trample and impact force that when concreting generates and caused by template dislocation, deformation.
5. a kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab according to claim 2, feature exists
In above-mentioned steps 6) in:
1. the greasy dirt on sundries and reinforcing bar in template need to be cleaned out, the gap of template and hole are stifled tight；
2. beam, board concrete pour simultaneously, casting method, with " catching up with slurry processes " i.e. first casting beams, is layered by one end according to deck-molding
It pours and builds up stairstepping, when the concrete for reaching board bottom position Shi Zaiyu plate pours together；
3. after concreting to designed elevation, vibrating head vibration compacting is struck off with long floating rule, after 2~3h of concreting,
It is rolled with iron roller and is compacted several times repeatedly, smeared and flattened with finisher, after waiting concrete to receive water, use troweling before final set for the second time again
Machine screeding and compaction repeatedly；
4. being covered in time within 12h after concreting, sprinkling maintenance；
5. reaching requirement of strength design to this layer of support plate, continue earth excavation, carries out lower plywood construction.
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| CN201910648424.1A CN110439002A (en) | 2019-07-18 | 2019-07-18 | A kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab |
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| CN201910648424.1A CN110439002A (en) | 2019-07-18 | 2019-07-18 | A kind of interim horizontal structure of inner support is used as the method for permanent structure beam slab |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627187A (en) * | 2020-12-03 | 2021-04-09 | 中国建筑股份有限公司 | Vertical support assembly and construction method of foundation pit vertical support |
| CN113565139A (en) * | 2021-07-07 | 2021-10-29 | 深圳市中地建设工程有限公司 | Construction method facilitating demolding of floor beam and floor template |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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