CN107687281A - A kind of prestressing force pull end slip-form template installation method - Google Patents
A kind of prestressing force pull end slip-form template installation method Download PDFInfo
- Publication number
- CN107687281A CN107687281A CN201610635799.0A CN201610635799A CN107687281A CN 107687281 A CN107687281 A CN 107687281A CN 201610635799 A CN201610635799 A CN 201610635799A CN 107687281 A CN107687281 A CN 107687281A
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- Prior art keywords
- steel
- slip
- prestressing force
- strand wires
- wooden
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 78
- 239000010959 steel Substances 0.000 claims abstract description 78
- 238000009415 formwork Methods 0.000 claims abstract description 21
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 16
- 210000003205 muscle Anatomy 0.000 claims abstract description 11
- 230000009194 climbing Effects 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000009416 shuttering Methods 0.000 claims abstract description 4
- 238000009751 slip forming Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 210000002435 tendon Anatomy 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 241001191582 Elasmia cave Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/22—Sliding forms raised continuously or step-by-step and being in contact with the poured concrete during raising and which are not anchored in the hardened concrete; Arrangements of lifting means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of prestressing force pull end slip-form template installation method, it is characterised in that comprise the following steps：A, prestressing force is set more than concrete silo bottom plate, b, angle steel is installed in the elongated slot inboard width direction both sides reserved, some wooden screens are installed on the inside of two angle steel c, d, prestressed muscle, spiral bar, bearing plate, cave mould, e, concrete, climbing shuttering, repeat step c and d, because wooden screen both sides and combined steel sheet separation are respectively 10mm are poured into a mould, combined steel formwork is slided in slip forming, and wooden screen is passed through by stretching end presstressed reinforcing steel and remained stationary as.The prestressing force pull end slip-form template installation method of the present invention has formwork structure simple, easy to make, construction quality is safe and reliable, template has the advantages of enough intensity, rigidity, stability, the part that prestress wire is reserved in outside template can pass through sliding mode system and ensure the piece tightness of slip-form template.
Description
Technical field
The present invention relates to a kind of Formwork Installation Method, is a kind of prestressing force pull end slip-form template installation side specifically
Method.
Background technology
Non-cohesive Prestressing Force Technology is widely used in engineering field, unbonded prestressing tendon generally use diameter 15.2mm,
Tensile strength 1860MPa steel strand wires, outsourcing anti-corrosion grease and sheath, there is simple structure, easy for construction, resistance to corrosion is strong
The features such as.
Fig. 1 is known unbonded prestressing tendon stretching end structural representation.Unbonded prestressing tendon stretching end component by
Unbonded prestressing tendon, spiral bar, bearing plate, anchorage composition.
Fig. 2 is the structural representation of known unbonded prestressing tendon stretching end and concrete-pouring template.Soap-free emulsion polymeization is pre-
Stress rib, spiral bar, bearing plate all should the installation before concreting, anchorage then tears open in concreting completion and template
Installed after removing, therefore should be in the installation site of reserved anchorage, i.e. cave mould before concreting.
Fig. 3 is the structural representation of steel strand tension end and buttress in known Large-size rebar concrete silo sliding formwork
Figure.Large-size rebar concrete silo generally using unbonded prestressing tendon enhancing ring tensile capacity, reduces fracture width.Greatly
Diameter silo sets 4 buttresses, and in 0 ° of silo, 90 °, 180 °, 270 ° of positions set buttress, and steel strand tension end, which is located at, to be helped
Pilaster both sides, unbonded prestressing tendon are set by 180 ° of cornerites, and the stretching end of two adjacent rings unbonded prestressing tendon interlocks 90 ° of cloth
Put.
Fig. 4 is stretching end partial enlarged drawing at the silo buttress post in Fig. 3.The steel strand wires of stretching end at silo buttress post
Reserved 0.6m length.
Large-size rebar concrete tube silo wall is constructed and typically uses slipform process, and the prestress wire at buttress will
More than 600mm length is reserved in stretching end, therefore the slip-form template at buttress needs to be transformed, ensureing that stretching end stays
In the case of putting, ensure that buttress pours simultaneously with silo wall concrete.
Fig. 5 is that the known totally-enclosed sliding formwork combined steel formwork vertically installed arranges schematic diagram.Known slip-form template changes
The method of making is to take indwelling template groove, and the polystyrene material of blocking concrete, but the party are set on the inside of slip-form template groove
Method often because polystyrene material intensity is relatively low, easily produces spillage at template groove in concreting and process of vibrating and showed
As, cause stretching end concrete density not enough, intensity decreases, influence prestressing force effect.
Therefore the mode of the indwelling template groove of known slip-form template there are problems that above-mentioned a variety of inconvenience and.
The content of the invention
The purpose of the present invention, it is to propose a kind of safe and reliable prestressing force pull end slip-form template installation method.
To achieve the above object, technical solution of the invention is：
A kind of prestressing force pull end slip-form template installation method, for Large-size rebar concrete silo slipform process, in coagulation
3-6 buttress is set on Tu Tongcangbi, and buttress is evenly arranged along concrete tube bulkhead, of the buttress as presstressed reinforcing steel
Pull end, presstressed reinforcing steel are provided with some beam steel strand wires, are provided with three steel strand wires per beam steel strand wires, it is characterised in that including following step
Suddenly：
A, prestressing force is set more than concrete silo bottom plate, steel is combined with 200mm*1200mm and 100mm*1200mm to known
The totally-enclosed slip-form template vertically installed of template makes improvements, and makes to reserve the wide length of one >=100mm between counterfort column template
Groove；
B, angle steel is installed in the elongated slot inboard width direction both sides reserved, angle steel length is 1200mm, is equal to angle steel length
Form height, thus the width of stretching end reduced by 100mm to≤50mm；Angle steel apart from combined steel formwork inner surface 15mm, and
With combined steel formwork firm welding；
Some wooden screens are installed, using 80mm is wide, the thick glued boards of 15mm, wooden screen length is wooden screen on the inside of two angle steel c,
The spacing of adjacent two beams steel strand wires, three dry diameter 18mm holes are bored on wooden screen, and pitch-row is the spacing of adjacent two steel strand wires；
D, prestressed muscle, spiral bar, bearing plate, cave mould, after presstressed reinforcing steel is sequentially passed through spiral bar, bearing plate, cave mould
Into the hole of wooden screen；
E, concrete, climbing shuttering, repeat step c and d, because wooden screen both sides and combined steel sheet separation are respectively are poured into a mould
10mm, combined steel formwork slides in slip forming, and for wooden screen by stretching end presstressed reinforcing steel through remaining stationary as, wooden screen goes out combination
Reuse can be removed after steel form.
The prestressing force pull end slip-form template installation method of the present invention can also be using following technical measures come further
Realize.
Foregoing method, wherein the angle steel specification is L25*3 angle steel.
Foregoing method, wherein during the prestressed muscle, the hole that is penetrated per beam steel strand wires in one piece of wooden screen.
Foregoing method, wherein during the prestressed muscle, wooden screen is penetrated per every steel strand wires in beam steel strand wires
In a hole.
After adopting the above technical scheme, the prestressing force pull end slip-form template installation method of the present invention has advantages below：
1st, formwork structure is simple, easy to make；
2nd, construction quality is safe and reliable, and template has enough intensity, rigidity, stability, and prestress wire is reserved in template
Outer part can pass through sliding mode system；
3rd, the piece tightness of slip-form template is ensured.
Brief description of the drawings
Fig. 1 is known unbonded prestressing tendon stretching end structural representation；
Fig. 2 is the structural representation of known unbonded prestressing tendon stretching end and concrete-pouring template；
Fig. 3 is the structural representation of steel strand tension end and buttress in known Large-size rebar concrete silo sliding formwork；
Fig. 4 is stretching end partial enlarged drawing at the silo buttress post in Fig. 3；
Fig. 5 is that the known totally-enclosed sliding formwork combined steel formwork vertically installed arranges schematic diagram；
Fig. 6 reserves the wide elongated slot schematic diagrames of 100mm between the counterfort column template of the embodiment of the present invention；
Fig. 7 is the angle steel and wooden screen scheme of installation of the embodiment of the present invention；
Fig. 8 is the A-A sectional views in Fig. 7；
Fig. 9 is presstressed reinforcing steel, spiral bar, bearing plate, the cave mould of the embodiment of the present invention, and presstressed reinforcing steel sequentially passes through wooden screen hole and shown
It is intended to；
Figure 10 is the B-B sectional views in Fig. 9.
In figure：1 unbonded prestressing tendon, 2 spiral bars, 3 bearing plates, 4 anchorages, 5 cave moulds, 6 templates, 7 the 1st buttresses, 8
2 buttresses, 9 the 3rd buttresses, 10 the 4th buttresses, 11 stretching ends, 12 length in reserve, 13 barrels, 14 combined steel formworks, 15 wood gears
Plate, 16 angle steel, 17 concrete.
Embodiment
With reference to embodiments and its accompanying drawing illustrates further to the present invention.
Embodiment 1
The prestressing force pull end slip-form template installation method construction process of the present invention：
Reequip counterfort column template → installation backstop angle steel → prestressed muscle, spiral bar, cave mould and installation wooden screen → cast
Concrete, sliding formwork lift → removed wooden screen, are used in turn.
The prestressing force pull end slip-form template installation method of the present invention, for Large-size rebar concrete silo sliding formwork work
Skill, four buttresses are set on concrete tube bulkhead, buttress is evenly arranged along concrete tube wall 13, and buttress is answered as pre-
The stretching end 11 of power muscle, presstressed reinforcing steel 1 are provided with some beam steel strand wires, and three steel strand wires are provided with per beam steel strand wires, and the installation is pre-
During stress rib, the hole that penetrates in one piece of wooden screen per beam steel strand wires.During the prestressed muscle, per every in beam steel strand wires
The hole that steel strand wires are penetrated in wooden screen.The prestressing force pull end slip-form template installation method of the present invention comprises the following steps：
Referring now to Fig. 6, Fig. 6 reserves the wide elongated slot schematic diagrames of 100mm between the counterfort column template of the embodiment of the present invention.
A, prestressing force is set more than concrete silo bottom plate, 200mm*1200mm and 100mm*1200mm groups is used to known
The totally-enclosed slip-form template vertically installed for closing steel form makes improvements, and makes to reserve a 100mm between counterfort column template wide
Elongated slot.
Fig. 7 is the angle steel and wooden screen scheme of installation of the embodiment of the present invention, and Fig. 8 is the A-A sectional views in Fig. 7.
B, it is L25*3 angle steel 16 in the elongated slot inboard width direction both sides installation angle steel specification reserved, angle steel length is
1200mm, angle steel length is set to be equal to the height of template 6, thus the width of stretching end 11 is reduced to 50mm by 100mm；Angle steel is apart from group
Close steel form inner surface 15mm, and with combined steel formwork firm welding；
Some wooden screens 15 are installed, wooden screen is using 80mm is wide, the thick glued boards of 15mm, wooden screen length on the inside of two angle steel c,
For the spacing of adjacent two beams steel strand wires, three dry diameter 18mm holes are bored on wooden screen, pitch-row is the spacing of adjacent two steel strand wires；
Fig. 9 is presstressed reinforcing steel, spiral bar, bearing plate, the cave mould of the embodiment of the present invention, and presstressed reinforcing steel sequentially passes through wooden screen hole and shown
It is intended to, Figure 10 is the B-B sectional views in Fig. 9.
D, prestressed muscle 1, spiral bar 2, bearing plate 3, cave mould 5, make presstressed reinforcing steel sequentially pass through spiral bar, pressure-bearing
Enter the hole of wooden screen 15 after plate, cave mould；
E, concrete 17, climbing shuttering 6, repeat step c and d, because wooden screen both sides and combined steel sheet separation are respectively are poured into a mould
10mm, combined steel formwork slides in slip forming, and for wooden screen by stretching end presstressed reinforcing steel through remaining stationary as, wooden screen goes out combination
Reuse can be removed after steel form 14.
The present invention has substantive distinguishing features and significant technological progress, prestressing force pull end slip-form template of the invention installation
Method, the totally enclosed template form of buttress is improved, makes the model sheetinstallat of prestressed silo buttress stretching end, meets template
Intensity, rigidity, stability, ensure that prestress wire is reserved in the part outside template and can pass through sliding mode system again, and make
The piece tightness of slip-form template.
The prestressing force pull end slip-form template installation method of the present invention is transported in Baosteel coal yard E, F material strip reconstruct silo engineering
With significant effect.
Above example is used for illustrative purposes only, rather than limitation of the present invention, the technology people about technical field
Member, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, it is all equivalent
Technical scheme should also belong to scope of the invention, should be limited by each claim.
Claims (4)
- A kind of 1. prestressing force pull end slip-form template installation method, for Large-size rebar concrete silo slipform process, mixed 3-6 buttress is set on solidifying Tu Tongcangbi, buttress is evenly arranged along concrete tube bulkhead, and buttress is as presstressed reinforcing steel Stretching end, presstressed reinforcing steel are provided with some beam steel strand wires, are provided with three steel strand wires per beam steel strand wires, it is characterised in that including following step Suddenly：A, prestressing force is set more than concrete silo bottom plate, steel is combined with 200mm*1200mm and 100mm*1200mm to known The totally-enclosed slip-form template vertically installed of template makes improvements, and makes to reserve the wide length of one >=100mm between counterfort column template Groove；B, angle steel is installed in the elongated slot inboard width direction both sides reserved, angle steel length is 1200mm, is equal to angle steel length Form height, thus the width of stretching end reduced by 100mm to≤50mm；Angle steel apart from combined steel formwork inner surface 15mm, and With combined steel formwork firm welding；Some wooden screens are installed, using 80mm is wide, the thick glued boards of 15mm, wooden screen length is wooden screen on the inside of two angle steel c, The spacing of adjacent two beams steel strand wires, three dry diameter 18mm holes are bored on wooden screen, and pitch-row is the spacing of adjacent two steel strand wires；D, prestressed muscle, spiral bar, bearing plate, cave mould, after presstressed reinforcing steel is sequentially passed through spiral bar, bearing plate, cave mould Into the hole of wooden screen；E, concrete, climbing shuttering, repeat step c and d, because wooden screen both sides and combined steel sheet separation are respectively are poured into a mould 10mm, combined steel formwork slides in slip forming, and for wooden screen by stretching end presstressed reinforcing steel through remaining stationary as, wooden screen goes out combination Reuse can be removed after steel form.
- 2. prestressing force pull end slip-form template installation method as claimed in claim 1, it is characterised in that the angle steel specification is L25*3 angle steel.
- 3. prestressing force pull end slip-form template installation method as claimed in claim 1, it is characterised in that the prestressed During muscle, the hole that penetrates in one piece of wooden screen per beam steel strand wires.
- 4. prestressing force pull end slip-form template installation method as claimed in claim 1, it is characterised in that the prestressed During muscle, per beam steel strand wires in a hole penetrating in wooden screen of every steel strand wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635799.0A CN107687281A (en) | 2016-08-05 | 2016-08-05 | A kind of prestressing force pull end slip-form template installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635799.0A CN107687281A (en) | 2016-08-05 | 2016-08-05 | A kind of prestressing force pull end slip-form template installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107687281A true CN107687281A (en) | 2018-02-13 |
Family
ID=61151800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610635799.0A Pending CN107687281A (en) | 2016-08-05 | 2016-08-05 | A kind of prestressing force pull end slip-form template installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107687281A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409900A (en) * | 2019-08-12 | 2019-11-05 | 河南工业大学 | Mixed connection prefabricated prestressed concrete circular storage silo structure |
| CN111424968A (en) * | 2020-04-28 | 2020-07-17 | 五冶集团上海有限公司 | Slip-form construction method for buttress column silo |
| CN111502375A (en) * | 2020-04-27 | 2020-08-07 | 五冶集团上海有限公司 | Prestress tensioning process method for ultra-large silo |
| CN113323379A (en) * | 2021-05-28 | 2021-08-31 | 广西建工集团冶金建设有限公司 | Steel strand head plugging hole reservation device for slip form construction and construction method |
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| CN102635238A (en) * | 2012-05-03 | 2012-08-15 | 中国十九冶集团有限公司 | Large-scale coal bunker wall prestress anchor sealing construction method and structure |
| CN102913026A (en) * | 2012-10-31 | 2013-02-06 | 中国十九冶集团有限公司 | Construction method and pouring structure for prestressed tendon position of prestressed coal bunker cylinder wall |
| CN104652905A (en) * | 2014-12-26 | 2015-05-27 | 山西四建集团有限公司 | Movable shaping and plate inserting device for sliding-form prestressed pilaster end of silo and form reversing method thereof |
-
2016
- 2016-08-05 CN CN201610635799.0A patent/CN107687281A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635238A (en) * | 2012-05-03 | 2012-08-15 | 中国十九冶集团有限公司 | Large-scale coal bunker wall prestress anchor sealing construction method and structure |
| CN102913026A (en) * | 2012-10-31 | 2013-02-06 | 中国十九冶集团有限公司 | Construction method and pouring structure for prestressed tendon position of prestressed coal bunker cylinder wall |
| CN104652905A (en) * | 2014-12-26 | 2015-05-27 | 山西四建集团有限公司 | Movable shaping and plate inserting device for sliding-form prestressed pilaster end of silo and form reversing method thereof |
Non-Patent Citations (1)
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|---|
| 陈翔: "《混凝土结构工程施工（上）》", 31 August 2015, 北京理工大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409900A (en) * | 2019-08-12 | 2019-11-05 | 河南工业大学 | Mixed connection prefabricated prestressed concrete circular storage silo structure |
| CN110409900B (en) * | 2019-08-12 | 2024-11-15 | 河南工业大学 | Hybrid connection prefabricated prestressed concrete circular storage silo structure |
| CN111502375A (en) * | 2020-04-27 | 2020-08-07 | 五冶集团上海有限公司 | Prestress tensioning process method for ultra-large silo |
| CN111424968A (en) * | 2020-04-28 | 2020-07-17 | 五冶集团上海有限公司 | Slip-form construction method for buttress column silo |
| CN113323379A (en) * | 2021-05-28 | 2021-08-31 | 广西建工集团冶金建设有限公司 | Steel strand head plugging hole reservation device for slip form construction and construction method |
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Application publication date: 20180213 |
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