CN104847090B - Construction method of small-section-size ventilating duct - Google Patents
Construction method of small-section-size ventilating duct Download PDFInfo
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- CN104847090B CN104847090B CN201510209064.7A CN201510209064A CN104847090B CN 104847090 B CN104847090 B CN 104847090B CN 201510209064 A CN201510209064 A CN 201510209064A CN 104847090 B CN104847090 B CN 104847090B
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- 238000010276 construction Methods 0.000 title claims abstract description 73
- 238000009423 ventilation Methods 0.000 claims abstract description 149
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims description 36
- 238000003032 molecular docking Methods 0.000 claims description 20
- 238000009415 formwork Methods 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 14
- 239000003351 stiffener Substances 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000007847 structural defect Effects 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003663 paint preservative agent Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
A small-section-size ventilation pipeline construction method adopts a mode of layered construction from bottom to top to construct a small-section-size concrete ventilation pipeline: the ventilating duct is constructed firstly, and then the floor slab is constructed, so that the concrete construction quality can be effectively controlled in the concrete pouring process, and the structural defects are avoided; after air pipe pours, what its roof adopted is exempted from to tear open the steel mould, has effectively avoided establishing and demolising the operation of traditional air pipe roof template, and the reinforcing bar in air pipe's bottom plate and the lateral wall need not to carry out the secondary design and reserves simultaneously, has reduced the construction degree of difficulty, the construction is more convenient, efficient. When a wall is arranged below the ventilating duct, the construction principle is unchanged, the wall is constructed from bottom to top in a layered manner, and then the ventilating duct is constructed; and finally, carrying out floor construction, thus finishing the modeling construction of the small-section size ventilation pipeline. Can be widely applied to the construction of ventilation pipelines.
Description
Technical field
The present invention relates to the construction method of a kind of ventilation shaft.
Background technology
Small bore concrete ventilation shaft is one of special construction of EPR nuclear power station, this ventilation shaft by concrete floor,
Sidewall body of wall, top board form.Horizontal pipe typical-sample is for being attached to floor and body of wall junction or direct " suspension " in building
Bottom plate；Vertical duct is the most typically attached to main body of wall junction, forms independent room.
, there is ventilation shaft top in the mode that the construction of small bore concrete ventilation shaft is constructed routinely simultaneously with agent structure
Plate bed die installs, removes the problem that difficulty is big.As reserved after-pouring is constructed, need to increase substantial amounts of liner punching block, template is propped up simultaneously
If after completing, sidewall body of wall and base plate completely enclose, and concrete pouring quality exists bigger risk, and after pouring, bottom quality lacks
Fall into repairing difficulty bigger.
Summary of the invention
It is an object of the invention to provide a kind of small cross-sectional size ventilation shaft construction method, existing construction formwork will be solved and tear open
Mould difficulty greatly, the most easy working technical problem；And the problem solving to ensure pouring quality, improve efficiency of construction.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of small cross-sectional size ventilation shaft construction method, described ventilation shaft is unsettled pours the following table being connected to floor
Face, including ventilation shaft base plate and suspension sidewall, specifically comprises the following steps that
Step one, sets up ventilation shaft support system and form bracing system.
Step 2, colligation ventilation shaft base plate and the inside framework of steel reinforcement of suspension sidewall, connect measure joint bar and also install logical
The formwork for placing of wind pipeline.
Step 3, pours ventilation shaft concrete, and wherein ventilation shaft two hangs the inside framework of steel reinforcement of sidewall and arranges
Executing joint bar and leave Bar Anchorage end in construction joint position, described construction joint indwelling is in the elevation location of floor.
Step 4, form removal after ventilation shaft is concrete curing.
Step 5, overlaps ventilation shaft backform between the upper surface of two suspension sidewalls of ventilation shaft.
Step 6, is blocked and at ventilation shaft by closure mortar between both ends and the suspension sidewall of ventilation shaft backform
It is connected tension rib between backform with measure joint bar.
Step 7, the inside framework of steel reinforcement of colligation floor, wherein floor and the inside reinforcing bar hung at sidewall link position
Skeleton is connected with the anchored end reinforcing bar binding hung on sidewall, and installs the formwork for placing of floor.
Step 8, pours floorslab concrete.
Step 9, form removal after floorslab concrete solidifies.
Step 10, removes ventilation shaft support system and form bracing system, so far completes ventilation shaft construction.
Described ventilation shaft support system is independently supported in below ventilation shaft, including vertical rod, is connected between vertical rod
Horizon bar, it is connected to the bearing of vertical rod lower end, is connected to the jacking of vertical rod upper end, is connected to the Os Draconis above jacking.
Described ventilation shaft backform includes that the length along ventilation shaft is overlapped on the upper table hanging sidewall to continuous distribution, two ends
The exempting from of face tears steel form open and uniform intervals is distributed in the stiffener exempting to tear steel form upper surface open.
Described stiffener be height be the steel plate of 5mm for 30mm, thickness, spaced being welded in parallel exempts to tear steel form open
Upper surface, its length is consistent with the width exempting to tear open steel form, and the spacing distance of adjacent stiffener is 400～600mm.
The described offside exempting to tear open steel form is welded with hanger.
Described exempt to tear the side not contacted with concrete on steel form open and all scribble corrosion-inhibiting coating.
Described to exempt to tear open the size that steel form is overlapped on the upper surface hanging sidewall be 20～30mm, and adjacent exempting from tears punching block open
Gap between plate is blocked by mortar.
The upper surface of described suspension sidewall polishes flat in the overlapping regions of overlap joint ventilation shaft backform.
One end of described tension rib is welded with stiffener, the anchored end reinforcement welding that the other end is reserved with measure joint bar, draws
The anchored end reinforcing bar that knot muscle is reserved with ventilation shaft backform, measure joint bar is cast in floorslab concrete in the lump.
The lower section of one sidewall of described ventilation shaft pours connection body of wall, i.e. ventilation shaft pours in floor and body of wall
Junction, the sidewall that wherein ventilation shaft is generally aligned in the same plane with body of wall is for docking sidewall, and another sidewall is unsettled sidewall, with upper
Unlike the construction method stated, before above-mentioned steps one, first pouring body of wall, it specifically comprises the following steps that
Step one, by body of wall and the inside framework of steel reinforcement overall binding molding of docking sidewall, at the internal steel of docking sidewall
Connect measure joint bar on muscles and bones frame, and install the formwork for placing of body of wall.
Step 2, pours the concrete of body of wall and in the elevation location indwelling construction joint of ventilation shaft base plate.
Step 3, form removal after walls concrete maintenance completes.
Step 4, sets up ventilation shaft support system and form bracing system.
Step 5, by the inside framework of steel reinforcement overall binding molding of ventilation shaft base plate and unsettled sidewall, at unsettled sidewall
Inside framework of steel reinforcement on connect measure joint bar, wherein the inside framework of steel reinforcement of ventilation shaft base plate and the reinforcing bar docking sidewall
Frame colligation connects, and installs the formwork for placing of whole ventilation shaft.
Step 6, pours ventilation shaft concrete, docking sidewall and the inside framework of steel reinforcement of unsettled sidewall and measure and inserts
Muscle leaves Bar Anchorage end in construction joint position, and this construction joint indwelling is in the elevation location of floor.
Step 7, form removal after ventilation shaft is concrete curing.
Step 8, overlaps ventilation shaft backform between docking sidewall and the upper surface of unsettled sidewall of ventilation shaft.
Step 9, the both ends of ventilation shaft backform are sealed by closure mortar between sidewall and unsettled sidewall with docking respectively
Block up and be connected tension rib between ventilation shaft backform with measure joint bar.
Step 10, the inside framework of steel reinforcement of colligation floor, wherein floor with dock at sidewall and unsettled sidewall link position
Inside framework of steel reinforcement be connected with the anchored end reinforcing bar binding on docking sidewall and unsettled sidewall, and install floor pour mould
Plate.
Step 11, pours floorslab concrete.
Step 12, form removal after floorslab concrete solidifies.
Step 13, removes ventilation shaft support system and form bracing system, so far completes ventilation shaft construction.
Compared with prior art the invention have the characteristics that and beneficial effect:
Instant invention overcomes tradition ventilation pipeline construction shortcoming inconvenient, inefficient, solve raising efficiency of construction, guarantee
The technical problem of construction quality.
The present invention uses the mode of construction in layer from the bottom to top to carry out the construction of small cross-sectional size concrete ventilation shaft: first execute
Work ventilation shaft is constructed floor again, so, just can effectively control concrete construction quality in concreting process, avoid knot
Structure defect；After ventilation shaft pours, its top board uses exempts to tear punching block open, effectively prevent tradition ventilation pipeline roof plate template
Install and remove operation, the reinforcing bar in the base plate of ventilation shaft and sidewall is reserved without carrying out Secondary Design simultaneously, reduces
Difficulty of construction, construction is the most convenient, efficiency is high.
When having body of wall below ventilation shaft, Construction Principle is constant, remains construction in layer from bottom to top, first carries out body of wall
Construction, then completes the construction of ventilation shaft；Finally carry out floor slab construction, so far complete the moulding of small cross-sectional size ventilation shaft
Construction.
The composite can be widely applied to ventilation shaft construction.
Accompanying drawing explanation
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the constructing structure schematic diagram of the embodiment of the present invention one.
Fig. 2 is the constructing structure schematic diagram of the embodiment of the present invention two.
Fig. 3 is the structure enlarged diagram of part A in Fig. 2.
Fig. 4 is the constructing structure schematic diagram of another kind structure of the present invention.
Fig. 5 is the ventilation shaft backform attachment structure schematic diagram with measure joint bar of the embodiment of the present invention one.
Fig. 6 is the structural representation of the stiffener of the embodiment of the present invention one.
Reference: 1-body of wall, 2-floor, 3-ventilation shaft base plate, 4-hang sidewall, 5-docks sidewall, 6-
Unsettled sidewall, 7-ventilation shaft backform, 8-ventilation shaft support system, 9-form bracing system, 10-block mortar, 11-
Measure joint bar, 12-tension rib, 13-stiffener, 14-exempt to tear steel form, 15-hanger open.
Detailed description of the invention
Embodiment one is shown in Figure 1, and this small cross-sectional size ventilation shaft construction method, described ventilation shaft is unsettled to be watered
Build the lower surface being connected to floor 2, including ventilation shaft base plate 3 and suspension sidewall 4, specifically comprise the following steps that
Step one, sets up ventilation shaft support system 8 and form bracing system 9.
Step 2, colligation ventilation shaft base plate 3 and the inside framework of steel reinforcement of suspension sidewall 4, connect measure joint bar 11 and also prop up
If the formwork for placing of ventilation shaft.
Step 3, pours ventilation shaft concrete, and wherein ventilation shaft two hangs the inside framework of steel reinforcement of sidewall 4 and arranges
Executing joint bar 11 and leave Bar Anchorage end in construction joint position, described construction joint indwelling is in the elevation location of floor.
Step 4, form removal after ventilation shaft is concrete curing.
Step 5, overlaps ventilation shaft backform 7 between the upper surface of two suspension sidewalls of ventilation shaft.
Step 6, is blocked by closure mortar 10 between both ends and the suspension sidewall of ventilation shaft backform 7 and is ventilating
Tension rib 12 it is connected between pipeline backform 7 with measure joint bar 11.
Step 7, the inside framework of steel reinforcement of colligation floor 2, wherein floor and the inside reinforcing bar hung at sidewall link position
Skeleton is connected with the anchored end reinforcing bar binding hung on sidewall, and installs the formwork for placing of floor 2.
Step 8, pours floorslab concrete.
Step 9, form removal after floorslab concrete solidifies.
Step 10, removes ventilation shaft support system 8 and form bracing system 9, so far completes ventilation shaft construction.
Described ventilation shaft support system 8 is independently supported in below ventilation shaft, including vertical rod, is connected between vertical rod
Horizon bar, it is connected to the bearing of vertical rod lower end, is connected to the jacking of vertical rod upper end, is connected to the Os Draconis above jacking.
Described ventilation shaft backform 7 includes being overlapped on along the length of ventilation shaft hang the upper of sidewall 4 to continuous distribution, two ends
The exempting from of surface tears steel form 14 open and uniform intervals is distributed in the stiffener 13 exempting to tear steel form 14 upper surface open；It is shown in Figure 3,
Described exempt to tear the side not contacted with concrete on steel form 14 open and all scribble corrosion-inhibiting coating, described in exempt to tear steel form 14 open and be overlapped on outstanding
The size hung on the upper surface of sidewall 4 is 20～30mm, and the adjacent gap exempting to tear open between steel form 14 is blocked by mortar, institute
State the upper surface hanging sidewall 4 and polish flat in the overlapping regions of overlap joint ventilation shaft backform 7；Shown in Figure 6, described in put more energy into
Plate 13 for height be 30mm, thickness be the steel plate of 5mm, the spaced upper surface exempting to tear steel form 14 open that is welded in parallel, it is long
Spending consistent with the width exempting to tear open steel form 14, the spacing distance of adjacent stiffener 13 is 400～600mm；Described exempting from tears punching block open
The offside of plate 14 is welded with hanger 15.
Shown in Figure 5, one end of described tension rib 12 is welded with stiffener 13, and the other end is reserved with measure joint bar 11
Anchored end reinforcement welding, the lower surface of described ventilation shaft backform 7 is consistent with the elevation location of floor, so, tension rib 12 with
Ventilation shaft backform 7, the reserved anchored end reinforcing bar of measure joint bar 11 are cast in floorslab concrete in the lump.
Embodiment two is shown in Figure 2, and unlike embodiment one, the lower section of a sidewall of described ventilation shaft pours
Connect and have body of wall, i.e. ventilation shaft pours in the junction of floor 2 with body of wall 1, and wherein ventilation shaft and body of wall 1 are positioned at same flat
The sidewall in face is docking sidewall 5, and another sidewall is unsettled sidewall 6, unlike above-mentioned construction method, in above-mentioned step
Before one, it is an entirety by the inside tie with reinforcing bar of docking sidewall 5 with body of wall 1, but both segmentation pouring constructions become
Type, it specifically comprises the following steps that
Step one, by body of wall 1 and the inside framework of steel reinforcement overall binding molding of docking sidewall 5, in the inside of docking sidewall 5
Connect measure joint bar on framework of steel reinforcement, and install the formwork for placing of body of wall 1.
Step 2, pours the concrete of body of wall 1 and in the elevation location indwelling construction joint of ventilation shaft base plate.
Step 3, form removal after walls concrete maintenance completes.
Step 4, sets up ventilation shaft support system 8 and form bracing system 9.
Step 5, by the inside framework of steel reinforcement overall binding molding of ventilation shaft base plate 3 and unsettled sidewall 6, in unsettled side
On the inside framework of steel reinforcement of wall 6 connect measure joint bar 11, wherein the inside framework of steel reinforcement of ventilation shaft base plate 3 with dock sidewall 5
Tie with reinforcing bar connect, and install the formwork for placing of whole ventilation shaft.
Step 6, pours ventilation shaft concrete, docking sidewall 5 and the inside framework of steel reinforcement of unsettled sidewall 6 and measure
Joint bar leaves Bar Anchorage end in construction joint position, and this construction joint indwelling is in the elevation location of floor.
Step 7, form removal after ventilation shaft is concrete curing.
Step 8, overlaps ventilation shaft backform 7 between docking sidewall and the upper surface of unsettled sidewall of ventilation shaft.
Step 9, the both ends of ventilation shaft backform 7 respectively with dock between sidewall and unsettled sidewall by closure mortar
10 closure are also connected tension rib 12 between ventilation shaft backform 7 with measure joint bar 11.
Step 10, the inside framework of steel reinforcement of colligation floor 2, wherein floor with dock at sidewall and unsettled sidewall link position
Inside framework of steel reinforcement be connected with the anchored end reinforcing bar binding on docking sidewall and unsettled sidewall, and install floor 2 pour mould
Plate.
Step 11, pours floorslab concrete.
Step 12, form removal after floorslab concrete solidifies.
Step 13, removes ventilation shaft support system 8 and form bracing system 9, so far completes ventilation shaft construction.
Additionally also having a kind of vertical ventilation shaft, shown in Figure 4, this concrete ventilation shaft is vertical ventilation duct
Road, is completed by story height section construction, highly general 2m～3m.Exempting from used by pipeline to tear punching block thickness of slab 5mm open, 30 × 5mm puts more energy into
Steel plate is not more than 900 × 300mm and arranges, punching block non-concrete contact surface uses paint preservative treatment.Detailed description of the invention is as follows:
Step one, completes the concrete construction of concrete ventilation shaft region body of wall 1, and construction joint indwelling is in ventilation duct
Road joins with agent structure.
Step 2, completes until walls concrete maintenance and after form removal, carries out exempting to tear steel form 14 open and install.
Step 3, is aerated pipeline reinforcing bar binding, pull bar layout welding and outboard template installation.
Step 4, after formwork reinforcement completes, is aerated pipeline coagulation soil pouring construction, and so far ventilation shaft can become
Type.
Claims (10)
1. a small cross-sectional size ventilation shaft construction method, described ventilation shaft is unsettled pours the following table being connected to floor (2)
Face, including ventilation shaft base plate (3) and suspension sidewall (4), it is characterised in that specifically comprise the following steps that
Step one, sets up ventilation shaft support system (8) and form bracing system (9)；
Step 2, colligation ventilation shaft base plate (3) and hang sidewall (4) inside framework of steel reinforcement, connect measure joint bar (11) and
Install the formwork for placing of ventilation shaft；
Step 3, pours ventilation shaft concrete, and wherein ventilation shaft two hangs inside framework of steel reinforcement and the measure of sidewall (4)
Joint bar (11) leaves Bar Anchorage end in construction joint position, and described construction joint indwelling is in the elevation location of floor；
Step 4, form removal after ventilation shaft is concrete curing；
Step 5, overlaps ventilation shaft backform (7) between the upper surface of two suspension sidewalls of ventilation shaft；
Step 6, is blocked by closure mortar (10) between both ends and the suspension sidewall of ventilation shaft backform (7) and is ventilating
Tension rib (12) it is connected between pipeline backform (7) with measure joint bar (11)；
Step 7, the inside framework of steel reinforcement of colligation floor (2), wherein floor and the internal steel muscles and bones hung at sidewall link position
Frame is connected with the anchored end reinforcing bar binding hung on sidewall, and installs the formwork for placing of floor (2)；
Step 8, pours floorslab concrete；
Step 9, form removal after floorslab concrete solidifies；
Step 10, removes ventilation shaft support system (8) and form bracing system (9), so far completes ventilation shaft construction.
Small cross-sectional size ventilation shaft construction method the most according to claim 1, it is characterised in that: described ventilation shaft props up
Support body system (8) is independently supported in below ventilation shaft, the horizon bar that including vertical rod, is connected between vertical rod, is connected under vertical rod
The bearing of end, it is connected to the jacking of vertical rod upper end, is connected to the Os Draconis above jacking.
Small cross-sectional size ventilation shaft construction method the most according to claim 2, it is characterised in that: described ventilation shaft top
Mould (7) include the length along ventilation shaft be overlapped on to continuous distribution, two ends hang sidewall (4) upper surface exempt from tear steel form open
And uniform intervals is distributed in the stiffener (13) exempting to tear open steel form (14) upper surface (14).
Small cross-sectional size ventilation shaft construction method the most according to claim 3, it is characterised in that: described stiffener (13)
It is the steel plate of 5mm for height for 30mm, thickness, the spaced upper surface exempting to tear steel form (14) open that is welded in parallel, its length
Consistent with the width exempting to tear open steel form (14), the spacing distance of adjacent stiffener (13) is 400～600mm.
Small cross-sectional size ventilation shaft construction method the most according to claim 4, it is characterised in that exempt from described in: to tear steel form open
(14) offside is welded with hanger (15).
Small cross-sectional size ventilation shaft construction method the most according to claim 5, it is characterised in that exempt from described in: to tear steel form open
(14) side not contacted with concrete on all scribbles corrosion-inhibiting coating.
Small cross-sectional size ventilation shaft construction method the most according to claim 3, it is characterised in that exempt from described in: to tear steel form open
(14) size being overlapped on the upper surface hanging sidewall (4) is 20～30mm, and adjacent exempting from tears the seam between steel form (14) open
Gap is blocked by mortar.
Small cross-sectional size ventilation shaft construction method the most according to claim 1, it is characterised in that: described suspension sidewall
(4) upper surface polishes flat in the overlapping regions of overlap joint ventilation shaft backform (7).
9. according to the small cross-sectional size ventilation shaft construction method described in claim 3 to 8 any one, it is characterised in that: institute
The one end stating tension rib (12) is welded with stiffener (13), the anchored end reinforcement welding that the other end is reserved with measure joint bar (11),
The anchored end reinforcing bar that tension rib (12) is reserved with ventilation shaft backform (7), measure joint bar (11) is cast in floorslab concrete in the lump
In.
10. according to the small cross-sectional size ventilation shaft construction method described in claim 1 to 9 any one, it is characterised in that: institute
The lower section of the sidewall stating ventilation shaft pours connection body of wall, i.e. ventilation shaft pours in the handing-over of floor (2) Yu body of wall (1)
Place, the sidewall that wherein ventilation shaft is generally aligned in the same plane with body of wall (1) is for docking sidewall (5), and another sidewall is unsettled sidewall
(6), unlike the construction method described in claim 1, before the step one of claim 1, body of wall (1) is first poured,
It specifically comprises the following steps that
Step one, by body of wall (1) and the inside framework of steel reinforcement overall binding molding of docking sidewall (5), is docking the interior of sidewall (5)
Connect measure joint bar on portion's framework of steel reinforcement, and install the formwork for placing of body of wall (1)；
Step 2, pours the concrete of body of wall (1) and in the elevation location indwelling construction joint of ventilation shaft base plate；
Step 3, form removal after walls concrete maintenance completes；
Step 4, sets up ventilation shaft support system (8) and form bracing system (9)；
Step 5, by the inside framework of steel reinforcement overall binding molding of ventilation shaft base plate (3) and unsettled sidewall (6), in unsettled side
On the inside framework of steel reinforcement of wall (6) connect measure joint bar (11), wherein the inside framework of steel reinforcement of ventilation shaft base plate (3) with dock
The tie with reinforcing bar of sidewall (5) connects, and installs the formwork for placing of whole ventilation shaft；
Step 6, pours ventilation shaft concrete, docking sidewall (5) and the inside framework of steel reinforcement of unsettled sidewall (6) and measure
Joint bar leaves Bar Anchorage end in construction joint position, and this construction joint indwelling is in the elevation location of floor；
Step 7, form removal after ventilation shaft is concrete curing；
Step 8, overlaps ventilation shaft backform (7) between docking sidewall and the upper surface of unsettled sidewall of ventilation shaft；
Step 9, the both ends of ventilation shaft backform (7) respectively with dock between sidewall and unsettled sidewall by closure mortar
(10) block and between ventilation shaft backform (7) with measure joint bar (11), be connected tension rib (12)；
Step 10, the inside framework of steel reinforcement of colligation floor (2), wherein floor with dock at sidewall and unsettled sidewall link position
Internal framework of steel reinforcement is connected with the anchored end reinforcing bar binding docked on sidewall and unsettled sidewall, and install floor (2) pour mould
Plate；
Step 11, pours floorslab concrete；
Step 12, form removal after floorslab concrete solidifies；
Step 13, removes ventilation shaft support system (8) and form bracing system (9), so far completes ventilation shaft construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209064.7A CN104847090B (en) | 2015-04-29 | 2015-04-29 | Construction method of small-section-size ventilating duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209064.7A CN104847090B (en) | 2015-04-29 | 2015-04-29 | Construction method of small-section-size ventilating duct |
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| Publication Number | Publication Date |
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| CN104847090A CN104847090A (en) | 2015-08-19 |
| CN104847090B true CN104847090B (en) | 2016-12-07 |
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| CN201510209064.7A Expired - Fee Related CN104847090B (en) | 2015-04-29 | 2015-04-29 | Construction method of small-section-size ventilating duct |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703259A (en) * | 2015-11-17 | 2017-05-24 | 中建四局第建筑工程有限公司 | Post-construction method of reinforced-concrete-poured interior wall |
| CN109611618A (en) * | 2018-12-26 | 2019-04-12 | 天津方标世纪规划建筑设计有限公司 | Fireproof fibre carcass with prefabricated non-dismantling formwork covers metal film liner air duct |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH691322A5 (en) * | 1996-08-28 | 2001-06-29 | Ancotech Ag | Installation of an air shaft at a cellar wall lowers the shaft component into an approximate position at a gap from the wall outer surface to be drawn against the wall by swing ties and lowered into its final location |
| CN202866251U (en) * | 2012-10-18 | 2013-04-10 | 中国核工业华兴建设有限公司 | Double-deck concrete ventilating ducts |
| CN103306463A (en) * | 2013-06-07 | 2013-09-18 | 中国核工业华兴建设有限公司 | Metal liner concrete air channel construction method |
| CN203403650U (en) * | 2013-08-28 | 2014-01-22 | 中铁十一局集团城市轨道工程有限公司 | Improved semi-prefabricated subway station rail top wind channel |
| CN103572964A (en) * | 2012-08-10 | 2014-02-12 | 中国水利水电第二工程局有限公司 | Mounting method of precast air duct during construction stage of construction engineering structure |
-
2015
- 2015-04-29 CN CN201510209064.7A patent/CN104847090B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH691322A5 (en) * | 1996-08-28 | 2001-06-29 | Ancotech Ag | Installation of an air shaft at a cellar wall lowers the shaft component into an approximate position at a gap from the wall outer surface to be drawn against the wall by swing ties and lowered into its final location |
| CN103572964A (en) * | 2012-08-10 | 2014-02-12 | 中国水利水电第二工程局有限公司 | Mounting method of precast air duct during construction stage of construction engineering structure |
| CN202866251U (en) * | 2012-10-18 | 2013-04-10 | 中国核工业华兴建设有限公司 | Double-deck concrete ventilating ducts |
| CN103306463A (en) * | 2013-06-07 | 2013-09-18 | 中国核工业华兴建设有限公司 | Metal liner concrete air channel construction method |
| CN203403650U (en) * | 2013-08-28 | 2014-01-22 | 中铁十一局集团城市轨道工程有限公司 | Improved semi-prefabricated subway station rail top wind channel |
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| CN104847090A (en) | 2015-08-19 |
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