CN103862557A - Prefabricated hollow slab beam side formwork without performing roughing treatment - Google Patents
Prefabricated hollow slab beam side formwork without performing roughing treatment Download PDFInfo
- Publication number
- CN103862557A CN103862557A CN201410102615.5A CN201410102615A CN103862557A CN 103862557 A CN103862557 A CN 103862557A CN 201410102615 A CN201410102615 A CN 201410102615A CN 103862557 A CN103862557 A CN 103862557A
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- CN
- China
- Prior art keywords
- steel plate
- hollow slab
- plate bar
- side template
- steel
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- 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.)
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Classifications
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- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/0818—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for roughening, profiling, corrugating
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/089—Using impacting tools
Abstract
The invention discloses a prefabricated hollow slab beam side formwork without performing roughing treatment. The prefabricated hollow slab beam side formwork without performing roughing treatment comprises a steel-side formwork, a steel plate strip arrangement area which is arranged on the inner side of the steel-side formwork and a plurality of steel plate strips which are welded in the steel plate strip arrangement area, wherein the steel plate strips are arranged in parallel at intervals. The side formwork can form reserved grooves on the side surface of a hollow slab, so that the requirements on the shearing behaviors of hollow slab beam connection hinge joints can be met without performing manual roughing treatment on the surface of concrete during hollow slab beam connection.
Description
Technical field
The present invention relates to a kind of side template of precast hollow plate-girder, be specifically related to a kind of precast hollow slab side template of exempting from dabbing processing.
Background technology
Prefabricated assembled concrete Hollow Slab Beam Bridge is a kind of bridge type of the extensive employing during Bridges in Our Country is built.Because the hinge seam concreting time of prefabricated assembled concrete Hollow Slab Beam Bridge is later than cored slab concrete, make adhesive surface become the weak link of hinge seam.Therefore, the Major Diseases of this Hollow Slab Beam Bridge occurs in hinge seam new-old concrete bonding place, shows as the cracking of hinge seam concrete along adhesive surface.
In actual constructing hollow slab beam, it is current more way that artificial chiseling processing is carried out in cored slab concrete side surface.Dabbing processing is in order to increase bonding roughness, and its mechanism is the mechanical snap power increasing between New-old concrete, thereby improves the shear behavior along adhesive surface.But along with the raising of cored slab concrete strength rank, for example conventional C40 level or C50 level concrete, artificial chiseling is very difficult, and it is very large to cut area, forming the concavo-convex difference that job specfication requires is not less than 6mm and exposes at least coarse aggregate of half, the large and surperficial dabbing difficult quality guarantee of quantities.So, improve Hollow Slab Beam Bridge construction quality to meet Hollow Slab Beam Bridge durability, effectively detail design research is an important topic.
Summary of the invention
technical problem:the invention provides a kind of in the time that hollow slab girder connects without artificial chiseling processing, can meet hinge seam and connect needed shear resistance, and the precast hollow slab side template of exempting from dabbing processing of easy application implementation in Practical Project.
technical scheme:for solving the problems of the technologies described above, precast hollow slab side template of exempting from dabbing processing of the present invention, comprise steel side template, be positioned at steel side template inner side steel plate bar layout area, be welded in the many groups steel plate bar in steel plate bar layout area, organize steel plate bar parallel interval more and arrange.
In a preferred embodiment of the present invention, every group of steel plate bar is in line by multiple cell boards interval, and the cell board interval fissure of displacement of two adjacent groups steel plate bar is arranged.
In a preferred embodiment of the present invention, the setting of staggering of the hinge of steel plate bar layout area and the hollow slab girder side surface seam reinforcing bar section of bending up region.
In the present invention, steel plate bar is welded in side template inner side, thereby forms form of grooves at the side surface of hollow slab girder, have the concrete surface of certain roughness, to meet the shear behavior of hinge seam new-old concrete bonding.The hollow slab girder of this template construction need not carry out artificial chiseling processing and increase bonding roughness.
Mentality of designing of the present invention is simply clear and definite, meet the requirement of the shear behavior of cored slab hinge seam by the rough surface of the formation of welding steel bar inside side template concrete hollow slab girder, in the time that hollow slab girder connects without artificial chiseling processing, can meet hinge seam and connect needed shear resistance, and easily application implementation in Practical Project.
beneficial effect:compared with prior art, technical scheme of the present invention has following beneficial effect:
(1) ensure cored slab hinge seam construction quality during concrete engineering.Steel plate bar is welded in side template inner side, thereby form the rough surface of reserved form of grooves on cored slab surface, meet hinge seam and connect needed shear resistance, with respect to artificial chiseling, this programme can be controlled degree of roughness uniformity well by the spacing of design steel plate bar, thereby ensures cored slab hinge seam construction quality during concrete engineering.
(2) save construction cost, reduction of erection time.If the rough surface that utilizes template of the present invention to form reserved form of grooves when cored slab is prefabricated replaces the surface of artificial chiseling processing, a slice hollow slab girder artificial chiseling manually comes in 2, cost-saved 500 yuan of a slice plate-girder, but also can the reduction of erection time.
Brief description of the drawings
Fig. 1 is precast hollow plate-girder cross-sectional view.
Fig. 2 is elevation of the present invention.
Fig. 3 is that the present invention adopts multiple cell boards to form the side view of the embodiment of one group of steel plate bar.
Fig. 4 is the side view that the present invention adopts the embodiment of whole steel plate bar.
Fig. 5 is plane of the present invention.
Fig. 6 is plane partial enlarged drawing of the present invention.
In figure, have: steel side template 1, steel plate bar 2, steel plate bar layout area 3, the hinge seam reinforcing bar section of bending up region 4, precast hollow slab 5.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
As shown in Figures 1 to 5, precast hollow slab side template of exempting from dabbing processing of the present invention, comprises steel side template 1, steel plate bar 2.Steel side template 1 is according to precast hollow slab 5 change in size; Steel plate bar 2 is welded in the steel plate bar layout area 3 of side template 1 inner side, and steel plate bar layout area 3 is near vertical section regions of hollow slab girder side surface, and should avoid the hinge seam reinforcing bar section of bending up region 4.
In the embodiment of the present invention, the thickness of steel plate bar 2 adopts 6mm, and width is 30mm, arranges in steel plate bar layout area more than 3 groups.Require selected every group of spacing according to roughness, horizontal direction parallel is arranged.Roughness is the ratio of groove area and the adhesive surface gross area, and for meeting the requirement of cored slab hinge seam adhesive surface shear behavior, it is 10% ~ 40% interior more suitable that roughness is controlled at, and designs according to the required roughness of reality the spacing that every group of steel plate bar arranged.
In embodiments of the invention, every group of steel plate bar 2 can adopt with side template 1 with long single steel plate bar, also can be in side template 1 length range, the cell board that is 500～800mm by multiple length is in line with 10mm gap, interval, and the steel plate bar 2 interval fissure of displacement of two adjacent groups are arranged.
The operation principle of above-mentioned precast hollow slab side template of exempting from dabbing processing is: this side template is by weldable steel lath inside side template, thereby the side surface at hollow slab girder forms form of grooves, has the concrete surface of certain roughness, to meet the shear behavior of hinge seam new-old concrete bonding.Need not carry out artificial chiseling processing with the hollow slab girder of this side template construction and increase bonding roughness.
The manufacturing process of above-mentioned precast hollow slab side template of exempting from dabbing processing is: only need be at side template 1 inner side of general hollow plate beam construction steel template weldable steel lath 2 at a certain distance.Because of in the time of the concreting of precast hollow plate-girder, in order to cut with scissors seam lower edge reinforcing bar laminating template, reinforcing bar upwards can be bent up, should avoid the reinforcing bar section of bending up region 4 so form steel plate bar layout 3 territories, district of groove.Consider that hinge seam inclination angle, top and bottom is less, and size is little, the shearing resistance effect of form of grooves rough surface is difficult for performance simultaneously, and therefore steel plate bar layout area is the near vertical section region of cored slab side surface.
Claims (3)
1. exempt from the precast hollow slab side template of dabbing processing for one kind, it is characterized in that, this template comprises steel side template (1), is positioned at the steel plate bar layout area (3) of described steel side template (1) inner side, is welded in the many groups steel plate bar (2) in described steel plate bar layout area (3), and described many group steel plate bar (2) parallel interval are arranged.
2. precast hollow slab side template of exempting from dabbing processing according to claim 1, is characterized in that, described every group of steel plate bar (2) is in line by multiple cell boards interval, and the cell board interval fissure of displacement of two adjacent groups steel plate bar (2) is arranged.
3. precast hollow slab side template of exempting from dabbing processing according to claim 1 and 2, is characterized in that, the setting of staggering of the hinge seam reinforcing bar section of the bending up region (4) of described steel plate bar layout area (3) and hollow slab girder side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102615.5A CN103862557A (en) | 2014-03-20 | 2014-03-20 | Prefabricated hollow slab beam side formwork without performing roughing treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102615.5A CN103862557A (en) | 2014-03-20 | 2014-03-20 | Prefabricated hollow slab beam side formwork without performing roughing treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103862557A true CN103862557A (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410102615.5A Pending CN103862557A (en) | 2014-03-20 | 2014-03-20 | Prefabricated hollow slab beam side formwork without performing roughing treatment |
Country Status (1)
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| CN (1) | CN103862557A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715041A (en) * | 2014-12-04 | 2016-06-29 | 中国核工业二四建设有限公司 | Concrete rough wall body formation process and mold plate |
| CN106003383A (en) * | 2016-06-01 | 2016-10-12 | 中国建筑第八工程局有限公司 | Manufacturing method of rough surface of prefabricated concrete component |
| CN106930419A (en) * | 2015-12-29 | 2017-07-07 | 中国二十冶集团有限公司 | A kind of construction joint placement method for being easy to dabbing |
| CN108611976A (en) * | 2018-04-13 | 2018-10-02 | 中国十七冶集团有限公司 | A kind of template and its application method of precast bridge concrete core slab |
| CN108908662A (en) * | 2018-06-25 | 2018-11-30 | 北京中兴恒工程咨询有限公司 | Pre-cast hollow slab exempts from dabbing construction method and mold |
| CN109958217A (en) * | 2019-04-16 | 2019-07-02 | 海南珠穆朗玛科技有限公司 | A kind of laminated floor slab battery mould and its laminated floor slab of preparation |
| CN110355862A (en) * | 2019-05-31 | 2019-10-22 | 中建市政工程有限公司 | Concrete engaging portion dabbing device and its construction method |
| CN111705650A (en) * | 2020-06-01 | 2020-09-25 | 湖南大学 | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof |
| CN114232990A (en) * | 2021-12-09 | 2022-03-25 | 中国一冶集团有限公司 | Stair step chiseling-free assembled aluminum template structure and construction method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715041A (en) * | 2014-12-04 | 2016-06-29 | 中国核工业二四建设有限公司 | Concrete rough wall body formation process and mold plate |
| CN105715041B (en) * | 2014-12-04 | 2018-06-15 | 中国核工业二四建设有限公司 | A kind of roughening concrete surface wall moulding process and template |
| CN106930419A (en) * | 2015-12-29 | 2017-07-07 | 中国二十冶集团有限公司 | A kind of construction joint placement method for being easy to dabbing |
| CN106003383A (en) * | 2016-06-01 | 2016-10-12 | 中国建筑第八工程局有限公司 | Manufacturing method of rough surface of prefabricated concrete component |
| CN108611976A (en) * | 2018-04-13 | 2018-10-02 | 中国十七冶集团有限公司 | A kind of template and its application method of precast bridge concrete core slab |
| CN108611976B (en) * | 2018-04-13 | 2019-08-30 | 中国十七冶集团有限公司 | A kind of template and its application method of precast bridge concrete core slab |
| CN108908662A (en) * | 2018-06-25 | 2018-11-30 | 北京中兴恒工程咨询有限公司 | Pre-cast hollow slab exempts from dabbing construction method and mold |
| CN108908662B (en) * | 2018-06-25 | 2020-07-10 | 北京中兴恒工程咨询有限公司 | Chiseling-free construction mold for prefabricated hollow slab beam |
| CN109958217A (en) * | 2019-04-16 | 2019-07-02 | 海南珠穆朗玛科技有限公司 | A kind of laminated floor slab battery mould and its laminated floor slab of preparation |
| CN110355862A (en) * | 2019-05-31 | 2019-10-22 | 中建市政工程有限公司 | Concrete engaging portion dabbing device and its construction method |
| CN111705650A (en) * | 2020-06-01 | 2020-09-25 | 湖南大学 | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof |
| CN114232990A (en) * | 2021-12-09 | 2022-03-25 | 中国一冶集团有限公司 | Stair step chiseling-free assembled aluminum template structure and construction method |
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Application publication date: 20140618 |