CN106064423B - A kind of prefabricated culvert contains the method for section - Google Patents
A kind of prefabricated culvert contains the method for section Download PDFInfo
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- CN106064423B CN106064423B CN201610391475.7A CN201610391475A CN106064423B CN 106064423 B CN106064423 B CN 106064423B CN 201610391475 A CN201610391475 A CN 201610391475A CN 106064423 B CN106064423 B CN 106064423B
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- template
- section
- internal model
- concrete
- culvert
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
- B28B7/0032—Moulding tables or similar mainly horizontal moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
Abstract
The present invention provides a kind of method that prefabricated culvert contains section, comprises the following steps：(1) template, including inner template and exterior sheathing are made；(2) multiple culvert section frameworks of steel reinforcement are arranged into discharge in one along longitudinal direction on precast pedestal, each contains partition plate in one piece of section framework of steel reinforcement both ends setting；(3) inner template is imported with mobile stent and contained in section framework of steel reinforcement；(4) exterior sheathing is installed；(5) casting concrete；(6) after the completion of containing section concreting, concrete is conserved, after the intensity that concrete reaches predetermined, starts form removal；(7) two external mold side templates are first removed, then mobile stent is imported and is contained in section, is integrally exported internal model with mobile formwork；(8) section will be contained and is lifted into storage area respectively.
Description
Technical field
The invention belongs to precast concrete production field, and in particular to a kind of prefabricated culvert contains the method for section.
Background technology
Culvert be in highway, railway construction, in order to make roadbed smoothly across water channel, the osculum built under roadbed
Road.The agent structure of culvert is assembled by multiple prefabricated concrete culvert sections.Traditional culvert section prefabricated construction is to use group
Punching block segmentation, block construction are closed, it is typical such as Chinese periodical《Railway construction》7th interim entitled " the pin-connected panel culvert of a piece in 1998
A kind of mode disclosed in the design and use of steel form ", during casting concrete, four pieces of inner templates enclose " mouth " font, interior
Four blocks of exterior sheathings are set again on the outside of template, inner and outer template be in integrally " returning " type, opening up, will contain and save inside and outside framework of steel reinforcement is placed in
Between template, culvert section concrete is then poured.Such a mode, can only once pour one and contain section, culvert big to Culvert engineering quantity
The engineering that joint number amount is more, the duration is tight, it is less efficient using such a mode, the duration can be influenced.
The content of the invention
It is an object of the invention to contain to save the problem of prefabricated efficiency is low for current culvert, there is provided a kind of prefabricated culvert contains section
Method, can once pour it is multiple contain section, so as to improve construction efficiency.
The present invention uses following technical scheme：
A kind of prefabricated culvert contains the method for section, it is characterised in that comprises the following steps：
(1) template, including inner template and exterior sheathing are made；The inner template includes an internal model top template, two internal model side forms
Plate and an internal model end template, the top of the both sides of the internal model top template respectively with two internal model side templates are hinged, internal model top template
Middle part of the middle part respectively with two internal model side templates be connected by adjusting screw, the both sides and two internal model sides of the internal model end template
The following of template is connected by connection wire rod；The exterior sheathing includes two pieces of external mold side templates isometric with internal model side template, institute
State default tension rod thru-hole on internal model side template and external mold side template；
(2) it is in that a row discharge successively relatively from beginning to end along longitudinal direction multiple culverts to be saved framework of steel reinforcement on precast pedestal, Mei Gehan
Save the middle partition plate that framework of steel reinforcement both ends set one piece of " mouth " font；
(3) end template of inner template is removed, is imported inner template in the culvert section framework of steel reinforcement discharged with mobile stent,
According to the internal diameter for containing section, appropriate angle is propagated outward into by the flexible adjustment internal model side template for adjusting screw；
(4) two pieces of external mold side templates are arranged on culvert section framework of steel reinforcement both sides, pass through internal model side template and external mold side template
Upper default tension rod thru-hole, fixation is connected with pull rod by internal model side template with external mold side template, is then exited mobile formwork interior
Template；
(5) start to pour culvert section concrete；Culvert section underplate concrete is poured first, after the completion of underplate concrete pours,
Internal model end template is installed on underplate concrete, and lower part of the both sides of internal model end template respectively with two internal model side templates is passed through into company
Connect screw connection to fix, then pour culvert section web and concrete roof successively；
(6) after the completion of containing section concreting, concrete is conserved, after the intensity that concrete reaches predetermined, is opened
Beginning form removal；
(7) first remove two external mold side templates, dismounting inner template in 2~3h after external mold is removed, first unclamp internal model end template with
The connection wire rod of two internal model side templates, removes internal model end template；Then mobile stent is imported and contained in section, with mobile formwork by
Mould integrally exports；
(8) after inner template export, treat that culvert section is quiet and stop at least 6h, be lifted into storage area.
The present invention once can it is prefabricated it is multiple contain section, in an Application Example of invention, can once pour 5 contain section,
In the case where engineering quantity is big, the duration is tight, construction quality, the construction efficiency of culvert can be largely improved, shortening is applied
Work duration, remarkable in economical benefits.
The exterior sheathing of the present invention can only set two external mold side templates, directly by the use of precast pedestal top surface as external mold bed die,
Concrete pours from top to bottom, can not set external mold top template, therefore can save two blocks of exterior sheathings than traditional approach；In normal conditions
Under can not also set internal model end template, reduce further cost.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is the inner template main structure diagram of the present invention；
Fig. 3 is the inner template side structure schematic view of the present invention；
Fig. 4 is the exterior sheathing side structure schematic view of the present invention；
Fig. 5 is the culvert section framework of steel reinforcement side structure schematic view arranged；
Fig. 6 is the structure diagram of middle partition plate；
Fig. 7 is that inner template is imported to the schematic diagram contained in section framework of steel reinforcement by mobile stent；
Fig. 8 is the transverse side view of mobile stent,
Fig. 9 is longitudinal side view of mobile stent；
Figure 10 is that inner template is imported to the side view cutaway drawing contained in section framework of steel reinforcement by mobile stent；
Figure 11 is inner template and exterior sheathing fixed by pull rod after structure diagram；
Figure 12 is to have poured after bottom plate contains section underplate concrete to be mounted with the structure diagram of internal model end template；
Figure 13 is to contain the schematic top plan view that section web pours state.
Embodiment
Below by way of a specific embodiment, and with reference to attached drawing, the method for the present invention is illustrated.
In this application embodiment, engineering bid section is equipped with 357 culverts, and 9834 sections contain section, and precast construction amount is big, the duration
Tightly.If using traditional culvert section prefabrication system, a set of template once contains section for prefabricated one, it is difficult to is timely completed.Therefore use
The method of the present invention, a set of template can once pour 5 and contain section.
Fig. 1 is flow chart of the method for the present invention, specifically includes following steps：
(1) pre-production template, including inner template and exterior sheathing.The structure of the inner template is as shown in Fig. 2, including in one
Mould top template 1, two internal model side templates 2 and an internal model end template 3, the both sides of the internal model top template 1 respectively with two internal model side forms
The top of plate 2 is hinged, and the middle part of internal model top template 1 is connected with the middle part of two internal model side templates 2 by adjusting screw 4 respectively, institute
The both sides and the following of two internal model side templates 2 for stating internal model end template 3 are connected by connection wire rod 5.
As shown in figure 3, the exterior sheathing includes two pieces of external mold side templates 6 isometric with internal model side template.
As shown in Figure 3, Figure 4, tension rod thru-hole 7 is preset on internal model side template 2 and external mold side template 6.
During template construct, inner template and exterior sheathing can use 8mm steel plates, laterally, longitudinal direction be respectively adopted 100mm channel steels,
140mm channel steels are as ribs, it is ensured that structural stability.
The length of the inner template and the length of exterior sheathing is depending on once prefabricated culvert joint number amount, in the present embodiment,
Plan once contains section, therefore the sum of inner template and prefabricated length for containing section of at least 5 sections of exterior sheathing for prefabricated 5.
(2) as shown in figure 5, multiple culvert section frameworks of steel reinforcement 8 are arranged from beginning to end relatively successively on precast pedestal 9 along longitudinal direction in one
Discharge, each middle partition plate 10 contained 8 both ends of section framework of steel reinforcement and one piece of " mouth " font is set；Bracing wire corrects framework of steel reinforcement 8 and interval
The relative position of plate 10, it is ensured that follow-up internal model imports smooth.
Contain the quantity of section framework of steel reinforcement depending on the prefabricated culvert joint number amount of a set of template, it is general to be no less than 3.This implementation
In example a set of template can prefabricated 5 contain section, it is therefore desirable to section frameworks of steel reinforcement are contained in primary emission 5.
The structure of middle partition plate 10 as shown in fig. 6,10 4, middle partition plate while four with containing section of width while thickness it is identical.
(3) as shown in fig. 7, the internal model end template of inner template is removed, inner template is imported with mobile stent 11 and is discharged
Culvert section framework of steel reinforcement 8 in, according to contain section internal diameter, propagated outward into by the flexible adjustment internal model side template 2 for adjusting screw 4
Appropriate angle.
The structure of mobile stent 11 as shown in Figure 8, Figure 9, including the rectangle frame that two longerons 12 and two crossbeams 13 form
Frame, a supporting leg 14 is respectively set at four angles of rectangular frame, and the bottom of every supporting leg 14 sets a roller 15；Mobile stent
Length is more than the length of inner template.
Such as Figure 10, and with reference to shown in Fig. 7, inner template is imported the method contained in section framework of steel reinforcement by mobile stent 11 is：
Contain in section framework of steel reinforcement 8 and be laid with two guide rails 16 along longitudinal direction, guide rail 16 can use channel steel to make, on section baseplate reinforcing bar skeleton is contained
Stirrup reinforcing bar is set, is played a supporting role to guide rail.Inner template is lifted to appropriate height with loop wheel machine, mobile stent 11 is passed through
Inner template, the supporting leg at mobile 11 both ends of stent are located at the both ends of inner template respectively；By two longerons 12 of mobile stent 11 with it is interior
Mould top template 1 is connected by bolt 17 and fixed；The roller 15 of mobile stent one end two supporting legs is placed on two guide rails 16, is pushed away
Dynamic mobile stent carries inner template and is moved into culvert section framework of steel reinforcement 8, until inner template is imported completely in culvert section framework of steel reinforcement.
(4) as shown in Figure 11,12,13, two pieces of external mold side templates 6 is arranged on 8 both sides of culvert section framework of steel reinforcement, pass through internal model
Default tension rod thru-hole 7 on side template 2 and external mold side template 6, is connected internal model side template 2 and external mold side template 6 with pull rod 18
It is fixed；Then the bolt between two longerons of mobile stent and the top template of inner template is unclamped, mobile formwork is exited into internal model
Plate, then removes guide rail.
(5) start to pour culvert section concrete；As shown in figure 12, culvert section underplate concrete is poured first, and underplate concrete pours
After the completion of building, internal model end template 3 is installed on underplate concrete, and by the both sides of internal model end template 3 respectively with two internal model side forms
The lower part of plate 2 is connected by connection wire rod 5 and fixed；Then culvert section web and concrete roof are poured successively.
Shown in Figure 13 is state diagram when pouring web concrete.When pouring web concrete, using placement layer by layer, often
Layer pours 300~500mm；Concrete uses vibrating spear vibration compacting using pouring clockwise or counterclockwise when pouring.
(6) after the completion of containing section concreting, concrete is conserved, after the intensity that concrete reaches predetermined, is opened
Beginning form removal.
The above-mentioned method that is conserved to concrete is：Contain after section concreting completes, it is quiet to stop between the stopping time in meditation
Period keeps environment temperature to be not less than 10 DEG C, and for the quiet 1~2h that stops after concrete initial set, arrangement pipeline carries out steam-cured, steam-cured heating
Speed is not more than 10 DEG C/h, keeps 40~60 DEG C of concrete internal temperature during constant temperature, maximum must not exceed 65 DEG C, thermostatic curing
When time 6~8 is small, then cool down, cooling rate is not more than 10 DEG C/h, when cooling 4 is small after, then start form removal.
When steam-cured, using four steam-cured pipelines, controlled by numerical control temperature control system, four steam-cured pipelines are arranged in culvert section
Middle part, left part, right part, each one of top.
(7) first remove two external mold side templates, dismounting inner template in 2~3h after external mold is removed, first unclamp internal model end template with
The connection wire rod of two internal model side templates, removes internal model end template；Then mobile stent is imported and contained in section, with mobile formwork by
Mould integrally exports；
The method of inner template is exported with movement stent is：On section bottom plate is contained two guide rails, mobile stent are laid with along longitudinal direction
The rollers of two shorter supporting legs pass through inner template along guide rail, mobile two longeron of stent is connected with internal model top template,
Adjust screw by shrinking again and demould internal model top template and internal model side template, then move stent carry inner template along guide rail to
Outer movement, inner template is integrally exported.
(8) after inner template export, section will be contained and quiet stop at least 6h.5 independent segments are separated into by section is contained by middle partition plate,
Storage area is lifted into one by one.
Claims (10)
1. a kind of prefabricated culvert contains the method for section, it is characterised in that comprises the following steps：
(1) template, including inner template and exterior sheathing are made；The inner template include an internal model top template, two internal model side templates and
One internal model end template, the top of the both sides of the internal model top template respectively with two internal model side templates is hinged, in internal model top template
Middle part of the portion respectively with two internal model side templates is connected by adjusting screw, the both sides of the internal model end template and two internal model side templates
Following connected by connection wire rod；The exterior sheathing includes two pieces of external mold side templates isometric with internal model side template, described interior
Default tension rod thru-hole on mould side template and external mold side template；
(2) multiple culvert section frameworks of steel reinforcement are discharged successively relatively from beginning to end on precast pedestal along longitudinal direction in a row, each contains section steel
Tendons skeleton both ends set the middle partition plate of one piece of " mouth " font；
(3) end template of inner template is removed, is imported inner template in the culvert section framework of steel reinforcement discharged with mobile stent, according to
Contain the internal diameter of section, appropriate angle is propagated outward into by the flexible adjustment internal model side template for adjusting screw；
(4) two pieces of external mold side templates are arranged on culvert section framework of steel reinforcement both sides, by pre- on internal model side template and external mold side template
If tension rod thru-hole, internal model side template is connected into fixation with external mold side template with pull rod, mobile formwork is then exited into inner template；
(5) start to pour culvert section concrete；Culvert section underplate concrete is poured first, after the completion of underplate concrete pours, in bottom plate
Internal model end template is installed on concrete, and lower part of the both sides of internal model end template respectively with two internal model side templates is passed through into connecting filament
Bar connection is fixed, and then pours culvert section web and concrete roof successively；
(6) after the completion of containing section concreting, concrete is conserved, after the intensity that concrete reaches predetermined, starts to tear open
Mould；
(7) two external mold side templates are first removed, dismounting inner template in 2~3h, first unclamps in internal model end template and two after external mold is removed
The connection wire rod of mould side template, removes internal model end template；Then mobile stent is imported and contained in section, it is with mobile formwork that internal model is whole
Body exports；
(8) after inner template export, treat that culvert section is quiet and stop at least 6h, be lifted into storage area.
2. prefabricated culvert according to claim 1 contains the method for section, it is characterised in that：The length of the inner template and exterior sheathing
Degree is at least the sum of prefabricated length for containing section of 5 sections.
3. prefabricated culvert according to claim 1 contains the method for section, it is characterised in that：The middle partition plate four of " mouth " font
It is a while width with contain section four while thickness it is identical.
4. prefabricated culvert according to claim 1 contains the method for section, it is characterised in that：The mobile stent, including two
The rectangular frame of root longeron and two crossbeams composition, respectively sets a supporting leg, the bottom of every supporting leg at four angles of rectangular frame
Portion sets a roller；The length of mobile stent is more than the length of inner template.
5. prefabricated culvert according to claim 4 contains the method for section, it is characterised in that：Step (3) moves stent by internal model
Plate imports the method contained in section framework of steel reinforcement：Containing in section framework of steel reinforcement two guide rails are laid with along longitudinal direction；With loop wheel machine by internal model
Plate is lifted to appropriate height, mobile stent is passed through inner template, the supporting leg at mobile stent both ends is located at the both ends of inner template respectively；
Fixation is bolted in the top template of two longerons of mobile stent and inner template；By mobile stent one end two supporting legs
Roller is placed on two guide rails, is promoted mobile stent to carry inner template and is moved into culvert section framework of steel reinforcement, until inner template is complete
Complete import is contained in section framework of steel reinforcement.
6. prefabricated culvert according to claim 5 contains the method for section, it is characterised in that：, first will mobile stent in step (4)
Two longerons and the connection of top template of inner template dismantle, mobile stent is exited into inner template, then removes guide rail.
7. prefabricated culvert according to claim 1 contains the method for section, it is characterised in that：Step (5) pours web concrete
When, using placement layer by layer, every layer pours 300~500 ㎜；Concrete is used when pouring and shaken using pouring clockwise or counterclockwise
Tamper vibration compacting.
8. prefabricated culvert according to claim 1 contains the method for section, it is characterised in that：The step (6) to concrete into
Row maintenance method be：After containing section concreting completion, between the stopping time in meditation, quiet period holding environment temperature of stopping is not less than
10 DEG C, the quiet 1~2h that stops is after concrete initial set, and arrangement pipeline progress is steam-cured, and steam-cured programming rate is not more than 10 DEG C/h, constant temperature phase
Between keep 40~60 DEG C of concrete internal temperature, maximum must not exceed 65 DEG C, when the thermostatic curing time 6~8 is small, then cools down,
Cooling rate is not more than 10 DEG C/h, when cooling 4 is small after, start form removal.
9. prefabricated culvert according to claim 8 contains the method for section, it is characterised in that：Using four steam-cured pipelines, by counting
Temperature control system control is controlled, four steam-cured pipelines are arranged in culvert section middle part, left part, right part, each one of top.
10. prefabricated culvert according to claim 4 contains the method for section, it is characterised in that：Led in step (7) with mobile stent
Going out the method for inner template is：On section bottom plate is contained two guide rails, the roller of one end two supporting legs of mobile stent are laid with along longitudinal direction
Inner template is passed through along guide rail, mobile two longeron of stent is connected with internal model top template, then is made by shrinking adjusting screw
Internal model top template is demoulded with internal model side template, is then moved stent carrying inner template and is displaced outwardly along guide rail, and inner template is overall
Export.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610391475.7A CN106064423B (en) | 2016-06-05 | 2016-06-05 | A kind of prefabricated culvert contains the method for section |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610391475.7A CN106064423B (en) | 2016-06-05 | 2016-06-05 | A kind of prefabricated culvert contains the method for section |
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| CN106064423B true CN106064423B (en) | 2018-04-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109208487A (en) * | 2018-10-24 | 2019-01-15 | 中铁第勘察设计院集团有限公司 | Railway ultra-high performance concrete box girder formwork and construction method |
| CN109555017A (en) * | 2019-01-08 | 2019-04-02 | 中交路桥建设有限公司 | A kind of separate type bridge guardian column formwork for placing and construction method |
| CN113524399A (en) * | 2020-04-13 | 2021-10-22 | 武汉城市职业学院 | Movable prefabricated hollow slab beam base |
| CN114855658A (en) * | 2022-06-08 | 2022-08-05 | 中交一公局第一工程有限公司 | Movable improved assembly type box culvert template and construction method thereof |
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| CN1106725A (en) * | 1993-11-10 | 1995-08-16 | 奎克塞尔技术有限公司 | Method of manufacturing precast concrete units |
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