CN118617567A - Common inner mold for prefabricated small box beams used for simply supported beams and continuous beams and construction method thereof - Google Patents
Common inner mold for prefabricated small box beams used for simply supported beams and continuous beams and construction method thereof Download PDFInfo
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- CN118617567A CN118617567A CN202410729538.XA CN202410729538A CN118617567A CN 118617567 A CN118617567 A CN 118617567A CN 202410729538 A CN202410729538 A CN 202410729538A CN 118617567 A CN118617567 A CN 118617567A
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- continuous
- cover plate
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- girder
- beams
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
-
- 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
- B28B1/00—Producing shaped prefabricated articles from the material
-
- 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
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种用于简支梁和连续梁的预制小箱梁共用内模及其施工方法，包括：用于浇筑连续梁的内模本体，所述内模本体的顶部形成有用于浇筑形成所述连续梁的负弯矩齿块的缺口；用于遮蔽所述缺口的盖板，可拆卸地安装于所述缺口，所述盖板的相对两侧形成有翼缘板，两个翼缘板封堵于所述缺口的相对的两个端口，在所述盖板安装于所述缺口处后，所述内模本体的顶部形成连续面以用于浇筑简支梁。本发明解决了装配式预制小箱梁的简支梁和连续梁的内模不能共用，存在模板投入成本较大的问题。
The present invention discloses a common inner mold for prefabricated small box beams for simply supported beams and continuous beams and a construction method thereof, comprising: an inner mold body for casting continuous beams, the top of the inner mold body is formed with a notch for casting the negative bending moment tooth block forming the continuous beam; a cover plate for shielding the notch, which is detachably installed on the notch, and flange plates are formed on opposite sides of the cover plate, and two flange plates are blocked at two opposite ports of the notch. After the cover plate is installed at the notch, the top of the inner mold body forms a continuous surface for casting simply supported beams. The present invention solves the problem that the inner molds of simply supported beams and continuous beams of prefabricated small box beams cannot be shared, and there is a large template investment cost.
Description
Technical Field
The invention relates to the technical field of prefabricated box girders, in particular to a prefabricated small box girder common internal mold for simply supported girders and continuous girders and a construction method thereof.
Background
The prefabricated small box girder is provided with a simply supported girder and a continuous girder, wherein the simply supported girder a is internally provided with a hogging moment tooth block thickening tooth block (shown in figure 1), the continuous girder box b is internally provided with a hogging moment thickening tooth block c (shown in figure 2), and the simply supported girder and the continuous girder internal mold cannot be shared due to the fact that the position design of the hogging moment tooth blocks in the box girder is different.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the invention provides a prefabricated small box girder common internal mold for a simply supported girder and a continuous girder and a construction method thereof, so as to solve the problems that the simply supported girder and the internal mold of the continuous girder of an assembled prefabricated small box girder cannot be used in common and the investment cost of a template is high.
To achieve the above object, there is provided a prefabricated small box girder common internal mold for a simply supported girder and a continuous girder, comprising:
the continuous beam casting die comprises an inner die body for casting a continuous beam, wherein a notch for casting a hogging moment tooth block for forming the continuous beam is formed at the top of the inner die body;
the cover plate is used for shielding the gap and detachably installed in the gap, flange plates are formed on two opposite sides of the cover plate, the two flange plates are plugged at two opposite ports of the gap, and after the cover plate is installed at the gap, a continuous surface is formed at the top of the inner die body for pouring a simply supported beam.
Further, a stiffening plate is connected between the inner side of the cover plate and the flange plate.
Further, the stiffening plate comprises a longitudinal rib plate and a transverse rib plate, the longitudinal rib plate is arranged along the length direction of the cover plate, the transverse rib plate is arranged along the width direction of the cover plate, and the transverse rib plate and the longitudinal rib plate are arranged in a crossing mode.
The invention provides a construction method for a prefabricated small box girder shared internal mold for a simply supported girder and a continuous girder, which comprises the following steps:
When the continuous beam is required to be poured, the cover plate is detached from the inner die body, so that the notch of the inner die body is exposed;
arranging an inner die body exposed out of the notch in the outer die so that a first pouring space is formed between the outer die and the inner die body;
Casting concrete in the first casting space to solidify and form the continuous beam;
When a simply supported beam is required to be poured, the cover plate is installed at the notch of the inner die body, and two flange plates of the cover plate are plugged at two opposite ports of the notch, so that a continuous surface is formed at the top of the inner die body;
After the continuous surface is formed at the top of the inner die body, the inner die body is arranged in the outer die, so that a second pouring space is formed between the outer die and the inner die body;
And pouring concrete in the second pouring space to solidify and form the simple beam.
The invention has the beneficial effects that the prefabricated small box girder for the simple girder and the continuous girder shares the internal mold, the internal mold of the continuous girder is taken as the basis, the cover plate is formed by adopting the pressing molding of the 8mm steel plate, the cover plate can form the internal mold of the simple girder after the blocking and covering treatment is carried out on the negative bending moment tooth block position of the box girder internal mold body, the design size of the simple girder is ensured to be met, the notch of the bending moment tooth block position is covered when the simple girder is produced, the cover plate is removed when the continuous girder is produced, the same set of internal mold body can be applied to the simple girder and the continuous girder, the template universality is increased, and the template input cost is reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a simply supported beam according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a continuous beam according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a prefabricated small box girder common internal mold for a simply supported girder and a continuous girder according to an embodiment of the present invention.
Fig. 4 is a front view of a common internal mold for prefabricated small box girders for simply supported girders and continuous girders according to an embodiment of the present invention.
Fig. 5 is a top view of an inner mold body according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a cover plate according to an embodiment of the invention.
FIG. 7 is a schematic diagram of a stiffener according to an embodiment of the present invention.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 3 to 7, the present invention provides a prefabricated small box girder common internal mold for a simply supported girder and a continuous girder, comprising: an inner die body 1 and a cover plate 2.
Wherein, the internal mold body 1 is used for pouring a continuous beam. The inner die body 1 may be an inner die of a continuous beam. Specifically, a notch 10 for pouring a hogging moment tooth block c forming a continuous beam is formed at the top of the inner die body 1.
The cover plate 2 serves to conceal the notch 10. The cover plate 2 is detachably mounted to the notch 10. In some embodiments, the two ends of the cover plate are connected to opposite sides of the notch of the inner die body by welding. In other embodiments, the cover plate may be secured to the inner mold body by lugs and bolts.
Referring to fig. 3 and 6, flange plates 21 are formed at opposite sides of the cover plate 2. Two flange plates 21 are plugged at two opposite ports of the notch 10.
After the cover plate 2 is installed at the notch 10, the top of the inner die body 1 forms a continuous surface for pouring the simply supported beams.
With continued reference to fig. 6 and 7, stiffening plates 22 are connected between the inner side of the cover plate 2 and the flange plate 21.
In this embodiment, the stiffener 22 includes longitudinal ribs 221 and transverse ribs 222. The longitudinal ribs 221 are provided along the length direction of the cover plate 2. The lateral rib 222 is provided in the width direction of the cover plate 2. The transverse rib 222 is disposed to intersect the longitudinal rib 221.
And the cover plate is pressed into a shaping cover plate by adopting an 8mm steel plate, and when the simply supported beam is produced, the negative bending moment tooth block position of the box beam inner die body is plugged, so that the design size of the simply supported beam is ensured to be met.
The invention provides a construction method for a prefabricated small box girder shared internal mold for a simply supported girder and a continuous girder, which comprises the following steps:
s1, when a continuous beam needs to be poured, the cover plate 2 is detached from the inner die body 1, so that the notch 10 of the inner die body 1 is exposed.
S2, arranging the inner die body 1 with the exposed notch 10 in the outer die, so that a first pouring space is formed between the outer die and the inner die body 1.
S3, pouring concrete in the first pouring space to solidify and form the continuous beam.
S4, when a simply supported beam needs to be poured, the cover plate 2 is installed at the notch 10 of the inner die body 1, and two flange plates 21 of the cover plate 2 are plugged at two opposite ports of the notch 10, so that a continuous surface is formed at the top of the inner die body 1.
In this embodiment, when the cover plate covers the notch, the bottom of the stiffening plate is supported on the inner wall of the notch.
S5, after a continuous surface is formed at the top of the inner die body 1, the inner die body 1 is arranged in the outer die, so that a second pouring space is formed between the outer die and the inner die body 1.
S6, pouring concrete in the second pouring space to solidify and form the simply supported beam.
The prefabricated small box girder shared internal mold for the simple girder and the continuous girder is characterized in that the internal mold of the continuous girder is used as a basis, a cover plate is formed by adopting 8mm steel plates for compression molding, the cover plate can form the internal mold of the simple girder by performing plugging and covering treatment on the negative bending moment tooth block position of the box girder internal mold body, the design size of the simple girder is ensured to be met, the notch at the bending moment tooth block position is covered when the simple girder is produced, the cover plate is removed when the continuous girder is produced, the same internal mold body can be applied to the simple girder and the continuous girder, the template universality is improved, and the template input cost is reduced.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (4)
1. A prefabricated small box girder common internal mold for a simply supported girder and a continuous girder, comprising:
the continuous beam casting die comprises an inner die body for casting a continuous beam, wherein a notch for casting a hogging moment tooth block for forming the continuous beam is formed at the top of the inner die body;
the cover plate is used for shielding the gap and detachably installed in the gap, flange plates are formed on two opposite sides of the cover plate, the two flange plates are plugged at two opposite ports of the gap, and after the cover plate is installed at the gap, a continuous surface is formed at the top of the inner die body for pouring a simply supported beam.
2. The prefabricated small box girder common internal mold for a simply supported girder and a continuous girder according to claim 1, wherein a stiffening plate is connected between the inner side of the cover plate and the flange plate.
3. The common internal mold for prefabricated small box girders for simple beams and continuous beams according to claim 2, wherein the stiffening plate comprises longitudinal ribs and transverse ribs, the longitudinal ribs are arranged along the length direction of the cover plate, the transverse ribs are arranged along the width direction of the cover plate, and the transverse ribs are arranged to cross the longitudinal ribs.
4. A method of constructing a prefabricated small box girder common internal mold for a simply supported girder and a continuous girder according to any one of claims 1 to 3, comprising the steps of:
When the continuous beam is required to be poured, the cover plate is detached from the inner die body, so that the notch of the inner die body is exposed;
arranging an inner die body exposed out of the notch in the outer die so that a first pouring space is formed between the outer die and the inner die body;
Casting concrete in the first casting space to solidify and form the continuous beam;
When a simply supported beam is required to be poured, the cover plate is installed at the notch of the inner die body, and two flange plates of the cover plate are plugged at two opposite ports of the notch, so that a continuous surface is formed at the top of the inner die body;
After the continuous surface is formed at the top of the inner die body, the inner die body is arranged in the outer die, so that a second pouring space is formed between the outer die and the inner die body;
And pouring concrete in the second pouring space to solidify and form the simple beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410729538.XA CN118617567A (en) | 2024-06-06 | 2024-06-06 | Common inner mold for prefabricated small box beams used for simply supported beams and continuous beams and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410729538.XA CN118617567A (en) | 2024-06-06 | 2024-06-06 | Common inner mold for prefabricated small box beams used for simply supported beams and continuous beams and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118617567A true CN118617567A (en) | 2024-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410729538.XA Pending CN118617567A (en) | 2024-06-06 | 2024-06-06 | Common inner mold for prefabricated small box beams used for simply supported beams and continuous beams and construction method thereof |
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| CN (1) | CN118617567A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516131A (en) * | 1991-07-16 | 1993-01-26 | Kajima Corp | Manufacturing method of precast concrete members |
| CN201361935Y (en) * | 2009-02-20 | 2009-12-16 | 宋国民 | Internal mold of precast box beam |
| CN105365042A (en) * | 2015-09-25 | 2016-03-02 | 佛山路桥预制构件有限公司 | Manufacturing method of small prefabricated box girder |
| CN211054008U (en) * | 2019-08-22 | 2020-07-21 | 中交一公局第六工程有限公司 | Synchronous pouring template for top plate and bottom plate of large-span prefabricated corrugated steel web composite beam |
| CN112554032A (en) * | 2021-01-29 | 2021-03-26 | 广西路建工程集团有限公司 | Equal-inner-section reinforced concrete box girder structure and prefabricating method |
| CN219855134U (en) * | 2023-03-17 | 2023-10-20 | 中铁二局集团有限公司 | Box girder template with changeable girder length |
| CN219930752U (en) * | 2023-04-06 | 2023-10-31 | 中交路桥建设有限公司 | Culvert channel wall body no-pull rod pouring template |
-
2024
- 2024-06-06 CN CN202410729538.XA patent/CN118617567A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516131A (en) * | 1991-07-16 | 1993-01-26 | Kajima Corp | Manufacturing method of precast concrete members |
| CN201361935Y (en) * | 2009-02-20 | 2009-12-16 | 宋国民 | Internal mold of precast box beam |
| CN105365042A (en) * | 2015-09-25 | 2016-03-02 | 佛山路桥预制构件有限公司 | Manufacturing method of small prefabricated box girder |
| CN211054008U (en) * | 2019-08-22 | 2020-07-21 | 中交一公局第六工程有限公司 | Synchronous pouring template for top plate and bottom plate of large-span prefabricated corrugated steel web composite beam |
| CN112554032A (en) * | 2021-01-29 | 2021-03-26 | 广西路建工程集团有限公司 | Equal-inner-section reinforced concrete box girder structure and prefabricating method |
| CN219855134U (en) * | 2023-03-17 | 2023-10-20 | 中铁二局集团有限公司 | Box girder template with changeable girder length |
| CN219930752U (en) * | 2023-04-06 | 2023-10-31 | 中交路桥建设有限公司 | Culvert channel wall body no-pull rod pouring template |
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