CN207619807U - Cast-in-situ concrete hollow slab beam and its core model supporting construction - Google Patents
Cast-in-situ concrete hollow slab beam and its core model supporting construction Download PDFInfo
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- CN207619807U CN207619807U CN201721155017.XU CN201721155017U CN207619807U CN 207619807 U CN207619807 U CN 207619807U CN 201721155017 U CN201721155017 U CN 201721155017U CN 207619807 U CN207619807 U CN 207619807U
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Abstract
A kind of cast-in-situ concrete hollow slab beam of the utility model offer and its core model supporting construction, the core model supporting construction include the core pipe of steel reinforcement cage and the hard being fixed on inside steel reinforcement cage, the end part seal of core pipe.And the cast-in-situ concrete hollow slab beam is by having poured concrete in steel reinforcement cage, the concrete forms hollow-core construction at the core pipe and constitutes.Using the structure of the utility model, have the following advantages that：1, presentation quality：It is not in the case where uniform top plate portion thickness of cored slab uneven thickness lacks after concreting.2, economic benefit：Construction is simple is convenient, removes form removal process from, can save cost of labor.3, social benefit：It by practical application, works well, work efficiency is high, easily promotes.
Description
Technical field
The utility model is related to a kind of cast-in-situ concrete hollow slab beam core model supporting construction.
Background technology
Concrete hollow slab bridge accounts for consequence in Bridges in Our Country building, currently, for the permanent of Mid and minor spans
Property bridge, either highway bridge or Urban Bridge, are all using concrete hollow slab bridge, because this bridge has as possible
It gathers materials on the spot, industrialized construction, durability is good, adaptable, a variety of advantages such as good integrity.Core is inflated using bridge hollow board
Mould pore-forming technique, it is easy for construction, it is applied widely, can Reusability 80-100 times or more, actually reduce cost, improve construct into
The first-selected instrument of degree.Material is not only saved, and has the features such as shape is changeable, it can be at circle, ellipse, rectangle, arch, eight sides
The pipelines such as shape, trapezoidal.It can also be at straight hole, variable cross-section hole etc..
Before bridge hollow board aerated core, first checking for steel reinforcement cage wire joint and roll silk head must not be towards internal diameter direction
Bending forms gas leak phenomenon in order to avoid stabbing core model.First casting reinforced cage bottom portion concrete bed course, then with restricting bridge inflated rubber core
In mode pulling to steel reinforcement cage, and make longitudinal seam upward.It opens bridge hollow board core model valve and is inflated to authorized pressure, you can close
Valve closing door, never must not superpressure.Special-shaped bridge cored slab core model should replace the through authorized pressure of inflation.
The bridge hollow board core model entered in steel reinforcement cage is fixed up and down.Bridge hollow board aerated core and bottom
Mould overcomes buoyancy and moves left and right.After casting concrete, is vibrated simultaneously from both sides using vibrating head, prevent bridge hollow board core
Mould moves left and right.And vibrating head end can not contact bridge hollow slab core mould, in order to avoid wear out gas leakage.After concrete initial set, beat
Valve opening door is deflated, and extracts bridge hollow board core model out.
And the maximum disadvantage of aerated core is rigidity shortage, appearance will expand outward after aerated core inflation, make original
The plane first manufactured becomes convex surface, and if manufacturing technology is slightly worse, it is thick that the tire cable (or tire screen cloth) in wall spreads uneven or rubber
Spend it is irregular, can all be formed core model inflation after part bulge, in addition core model float, it will lead to the uniform top plate of cored slab uneven thickness
Segment thickness lacks.
Utility model content
The purpose of this utility model is to provide a kind of cast-in-situ concrete hollow slab beam and its core model supporting construction, to solve
The problem of core model floating causes the uniform top plate portion thickness of cored slab uneven thickness to lack.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of cast-in-situ concrete hollow slab beam core model supporting construction, it is characterized in that including steel reinforcement cage and being fixed on steel reinforcement cage
The core pipe of internal hard, the end part seal of core pipe.
The cast-in-situ concrete hollow slab beam core model supporting construction, wherein the core pipe is PE pipes, HDPE pipes or PVC
Pipe.
The cast-in-situ concrete hollow slab beam core model supporting construction, wherein the preset distance above the bottom surface of steel reinforcement cage
Place is banded with several horizontal bottom spacer bars；The core pipe is in flatly to penetrate inside steel reinforcement cage, and be placed in described
The top of bottom spacer bar；The circumferential direction of the core pipe is fixed with stirrup.
The cast-in-situ concrete hollow slab beam core model supporting construction, wherein further include identical as core pipe cross-sectional shape
Bamboo slab rubber, the bamboo slab rubber nails in the tube head position of core pipe, and the seaming position of the bamboo slab rubber and tube head
Use rubber belt sealing.
A kind of cast-in-situ concrete hollow slab beam, it is characterized in that including aforementioned cast-in-situ concrete hollow slab beam core model supporting knot
Structure, and concrete has been poured in steel reinforcement cage, the concrete forms hollow-core construction at the core pipe.
Using technical solution provided by the utility model, there is following advantageous effect：
1, presentation quality：Be not in that the uniform top plate portion thickness of cored slab uneven thickness lacks after concreting
Situation.
2, economic benefit：Construction is simple is convenient, removes form removal process from, can save cost of labor.
3, social benefit：It by practical application, works well, work efficiency is high, easily promotes.
Description of the drawings
Fig. 1 is the construction method technological process of cast-in-situ concrete hollow slab beam core model supporting construction provided by the utility model
Figure；
Fig. 2 is the step schematic diagram one of the construction method；
Fig. 3 is the tube head processing schematic diagram of PE pipes；
Fig. 4 is cloth and smashes window arrangement schematic diagram of shaking；
Fig. 5 is the step schematic diagram two of the construction method；
Fig. 6 is the step schematic diagram three of the construction method；
Fig. 7 is the step schematic diagram four of the construction method.
Reference sign：Steel reinforcement cage 1；Main reinforcement 11；Bottom spacer bar 2；PE pipes 3；Stirrup 4；Bamboo slab rubber 5；Adhesive tape 6；
Cloth and smash the window 7 that shakes；Center of circle Angle Position A；Center of circle Angle Position B.
Specific implementation mode
The utility model provides a kind of cast-in-situ concrete hollow slab beam core model supporting construction, construction method process flow chart
As shown in Figure 1, including：
(1) bottom spacer bar is bound：
As shown in Fig. 2, several horizontal bottom spacer bars 2 are bound at preset distance above the bottom surface of steel reinforcement cage 1,
In the present embodiment, the bottom spacer bar 2 is arranged in parallel interval, it is preferred to use the plain bar of diameter 10mm, with steel
The binding connection of main reinforcement 11 of muscle cage 1；
(2) PE pipes are laid：
As shown in Fig. 2, being in flatly to penetrate inside steel reinforcement cage 1, and be placed in the bottom spacer bar 2 by PE pipes 3
Top；
(3) stirrup positioning binding：
As shown in Fig. 2, the circumferential direction with stirrup 4 along the PE pipes 3 fixes the PE pipes 3, wherein in the stirrup 4
Portion wales downwards the PE pipes 3,11 banding fixed of main reinforcement at the both ends of the stirrup 4 and the bottom of the steel reinforcement cage 1；
(4) quality examination：
(5) the tube head processing of PE pipes：
As shown in figure 3, cutting bamboo slab rubber 5 identical with 3 cross-sectional shape of PE pipes with cutting machine, then (do not given with nail
Diagram) bamboo slab rubber 5 is fixed on to the tube head position of PE pipes 3, then sealed seaming position with adhesive tape 6；
(6) concreting：
Wherein, it as shown in figure 4, being cloth and smashing window arrangement schematic diagram of shaking, is not blocked by PE pipes 3 in steel reinforcement cage 1
Position can arrange cloth and smash the window 7 that shakes, the cloth and to smash the window 7 that shakes preferably be in that " well " font arranges that spacing is not more than
50cm；
(6.1) tube bottom is poured
As shown in figure 5, by pump truck feeding, from cloth and 7 pan feeding of window that shakes is smash, is poured first to the tube bottom 100- of PE pipes 3
130 degree of center of circle Angle Position A (in figure by taking 120 degree of central angles as an example) form the first layer concrete；As shown in figure 5, to avoid PE from managing
3 or so unbalance stress cause tubing to deviate, and pouring rate should not be too fast, and control pours 1m in every 2.8-3.2min3.Casting process
In to observe concrete at any time and rise situation, concrete will uniformly enter mould, vibrate immediately after entering mould, and vibrating spear will be inserted and be pulled out slowly soon, each cloth
And smash the vibrating time of the window 7 that shakes and control in 20~30s, vibrating head must not collide PE pipes 3, reinforcing bar and pre-buried in operation of vibrating
Part etc.；
(6.2) pipe stage casing is poured
It is poured into after the tube bottom 100-130 degree center of circle Angle Position A of PE pipes 3, is carried out before first layer concrete initial set
Two layer concretes pour, and carry out the second layer and vibrate, when the second layer vibrates, vibrating spear should be inserted into the first layer concrete 5cm~
10cm is to avoid cold seam is generated, and when concrete rises to the pipe waist position of PE pipes 3,3 buoyancy of PE pipes increases, and slows down poring rate again
(pour 1m per 4.8-5.2min3), it is misplaced with preventing PE pipes 3 from floating, second layer concreting time control was on 2 hours left sides
The right side, the tube top 100-130 degree center of circle Angle Position B (in figure by taking 120 degree of central angles as an example) of second layer concreting to PE pipes 3,
The second layer concrete is formed, as shown in Figure 6.
(6.3) tube top is poured
It pours to the tube top 100-130 degree center of circle Angle Position B of PE pipes 3, third is carried out before second layer concrete initial set
Layer concrete pours, and carries out third layer and vibrate, and when third layer is vibrated, vibrating spear should be inserted into second layer concrete 5cm~10cm
To avoid generating cold seam, there is no underwater pipeline stabilizing and the problems such as float when third layer concreting, speed of perfusion, rate control can be accelerated
System is in 0.8-1.2m3/ min, until pouring completion, as shown in Figure 7.
It is emphasized that the PE pipes 3 in above-described embodiment can also be used HDPE pipes, pvc pipe etc. from heavy and light, intensity it is high,
Anticorrosive, wear-resisting composite material core pipe substitutes.
The cast-in-situ concrete hollow slab beam core model supporting construction being thusly-formed, including steel reinforcement cage 1 and it is fixed on steel reinforcement cage 1
The core pipe (such as PE pipes 3, HDPE pipe or pvc pipe) of internal hard, the end part seal of core pipe.
Specifically, it is to be banded with several horizontal bottoms above the bottom surface of steel reinforcement cage 1 at preset distance to position steel
Muscle 2；The core pipe is in flatly to penetrate inside steel reinforcement cage 1, and be placed in the top of the bottom spacer bar 2；The core pipe
Circumferential direction with stirrup 4 fix.
Moreover, the end part seal, refers to being cut into bamboo slab rubber 5 identical with core pipe cross-sectional shape, the bamboo slab rubber 5
It nails in the tube head position of core pipe, and the bamboo slab rubber 5 and the seaming position adhesive tape 6 of tube head seal.
And cast-in-situ concrete hollow slab beam provided by the utility model, it is to use aforementioned cast-in-situ concrete hollow slab beam core model
Supporting construction, and concrete has been poured in steel reinforcement cage 1, the concrete forms hollow-core construction at the core pipe.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, in the case where not departing from spirit and scope defined by claim, can many modifications may be made, variation or it is equivalent, but
It falls within the scope of protection of the utility model.
Claims (5)
1. a kind of cast-in-situ concrete hollow slab beam core model supporting construction, it is characterized in that including steel reinforcement cage and being fixed in steel reinforcement cage
The core pipe of the hard in portion, the end part seal of core pipe.
2. cast-in-situ concrete hollow slab beam core model supporting construction according to claim 1, which is characterized in that the core pipe is
PE pipes, HDPE pipes or pvc pipe.
3. cast-in-situ concrete hollow slab beam core model supporting construction according to claim 1, which is characterized in that in steel reinforcement cage
Above bottom surface several horizontal bottom spacer bars are banded at preset distance；The core pipe is in flatly to penetrate in steel reinforcement cage
Portion, and it is placed in the top of the bottom spacer bar；The circumferential direction of the core pipe is fixed with stirrup.
4. cast-in-situ concrete hollow slab beam core model supporting construction according to claim 1, which is characterized in that further include and core
The identical bamboo slab rubber of pipe cross-sectional shape, the bamboo slab rubber nail in the tube head position of core pipe, and the bamboo slab rubber
With the seaming position rubber belt sealing of tube head.
5. a kind of cast-in-situ concrete hollow slab beam, it is characterized in that including the cast-in-place coagulation as described in any one of claim 1-4
Native hollow slab beam core mould supporting construction, and concrete has been poured in steel reinforcement cage, the concrete forms sky at the core pipe
Core structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155017.XU CN207619807U (en) | 2017-09-08 | 2017-09-08 | Cast-in-situ concrete hollow slab beam and its core model supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155017.XU CN207619807U (en) | 2017-09-08 | 2017-09-08 | Cast-in-situ concrete hollow slab beam and its core model supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619807U true CN207619807U (en) | 2018-07-17 |
Family
ID=62819131
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721155017.XU Active CN207619807U (en) | 2017-09-08 | 2017-09-08 | Cast-in-situ concrete hollow slab beam and its core model supporting construction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107675604A (en) * | 2017-09-08 | 2018-02-09 | 北京翔鲲水务建设有限公司 | Cast-in-situ concrete hollow slab beam and its core construction method for supporting |
| CN109235732A (en) * | 2018-10-29 | 2019-01-18 | 中水电第十工程局（郑州）有限公司 | A kind of prefabricated hollow beam board construction method |
| CN113818628A (en) * | 2021-04-23 | 2021-12-21 | 上海建工四建集团有限公司 | Hollow precast slab and construction method thereof |
| CN115450661A (en) * | 2022-09-27 | 2022-12-09 | 中铁一局集团有限公司 | Method for improving construction quality of sprayed concrete for mine-method tunnel |
-
2017
- 2017-09-08 CN CN201721155017.XU patent/CN207619807U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107675604A (en) * | 2017-09-08 | 2018-02-09 | 北京翔鲲水务建设有限公司 | Cast-in-situ concrete hollow slab beam and its core construction method for supporting |
| CN109235732A (en) * | 2018-10-29 | 2019-01-18 | 中水电第十工程局（郑州）有限公司 | A kind of prefabricated hollow beam board construction method |
| CN109235732B (en) * | 2018-10-29 | 2020-02-14 | 中电建十一局工程有限公司 | Construction method for prefabricated hollow beam slab |
| CN113818628A (en) * | 2021-04-23 | 2021-12-21 | 上海建工四建集团有限公司 | Hollow precast slab and construction method thereof |
| CN115450661A (en) * | 2022-09-27 | 2022-12-09 | 中铁一局集团有限公司 | Method for improving construction quality of sprayed concrete for mine-method tunnel |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 100192 Qinghe Road, Haidian District, Beijing 191 Patentee after: Beijing Xiangkun Water Conservancy Project Co., Ltd. Address before: 100192 Room 201, Qinghe Road, Haidian District, Beijing, 201 Patentee before: Beijing Xiangkun Water Conservancy Project Co., Ltd. |