CN113997391A - A no inside and outside support integral formwork for prefabricating assembled box culvert - Google Patents
A no inside and outside support integral formwork for prefabricating assembled box culvert Download PDFInfo
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- CN113997391A CN113997391A CN202111406145.8A CN202111406145A CN113997391A CN 113997391 A CN113997391 A CN 113997391A CN 202111406145 A CN202111406145 A CN 202111406145A CN 113997391 A CN113997391 A CN 113997391A
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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
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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
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
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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
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The integral template without the inner and outer supports for prefabricating the assembled box culvert comprises an inner template component, wherein the inner template component comprises a first inner template, the upper end of the first inner template is hinged with the left side of an inner top template, the lower end of the first inner template is hinged with a third inner template, the upper end of a second inner template is hinged with the right side of the inner top template, the lower end of the second inner template is hinged with the upper end of a fourth inner template, the upper end of a first supporting telescopic rod is hinged with a third keel on the left side of the inner top template, the lower end of the first supporting telescopic rod is hinged with a second keel of the third inner template, the upper end of the second supporting telescopic rod is hinged with a third keel on the right side of the inner top template, and the lower end of the second supporting telescopic rod is hinged with a second keel of the fourth inner template; and a plurality of counter-pulling screw rods respectively penetrate through the fifth keel, the outer side die component, the concrete cavity, the inner die component and the first keel/second keel, and fasten and limit the outer side die component and the inner die component.
Description
Technical Field
The invention relates to the technical field of road engineering culverts, in particular to an integral template without inner and outer supports for a prefabricated box culvert.
Background
In the engineering construction process of highways, railways and the like, a culvert is usually adopted to ensure that surface water and shallow groundwater below a road surface can smoothly flow. Furthermore, the natural valley depression can discharge flood and simultaneously pass pedestrians, livestock or small vehicles. The box culvert is one of culverts in bridge and culvert engineering, and the prefabricated assembled box culvert standard prefabricated parts are manufactured and maintained in a factory in a centralized manner, are not influenced by external environment and weather, and can effectively control culvert section quality; the standardized construction level is improved, resources are saved, the pollution of construction to the environment is reduced, the labor production efficiency and the quality safety level are improved, and the construction cost is reduced; the prefabricated member can be manufactured simultaneously with foundation treatment and other work on a construction site, does not interfere with each other, and can be widely applied to the advantages of greatly shortening the construction period and the like.
At present, the culvert section prefabrication adopts template shaping, template assembly and disassembly are required before and after concrete pouring, small assembled templates are adopted, so that the operation of assembling and disassembling the templates in the box culvert prefabrication construction is complicated, the working efficiency of the template formed by assembling a plurality of small templates is low, the number of spliced seams is large, the splicing seam effect is poor, and the phenomena of slab staggering, slurry leakage and the like are easy to occur in the subsequent pouring process, so that the appearance quality of the prefabricated box culvert is poor;
the Chinese invention patent (CN108297255A) discloses an integral hydraulic type template applied to box girder prefabrication, which comprises an inner die component, a side die component, a supporting device and a base; the inner part of the base is rotatably connected with a screw rod, and the left end of the screw rod penetrates through the left side plate of the base and extends to the outer part of the base to be fixedly connected with a first belt pulley; the left side of the top of the base is fixedly connected with a three-phase asynchronous alternating current motor; a second belt pulley is mounted on an output shaft of the three-phase asynchronous alternating current motor and is in transmission with the first belt pulley through a belt; a screw rod sleeve is in threaded connection with the inner part of the base on the screw rod, and a clamping groove is formed in the top of the screw rod sleeve; this be applied to prefabricated whole fluid pressure type template of case roof beam uses through first adapter sleeve, second adapter sleeve and third adapter sleeve's cooperation for centre form component and side form component can adjust not unidimensional as required, have satisfied the demand of different occasions, and the practicality is strong, easily uses widely, but this patent degree of automation is low, and the compound die form removal efficiency is poor, and the compound die form removal operation is complicated.
The Chinese invention patent (CN106120579A) discloses a box culvert template, which comprises an inner template, an outer template, a lower tongue-and-groove template, an upper tongue-and-groove template, an inner template support and an inner template dorsal edge, wherein the inner template is arranged at the inner side of the outer template, a certain distance is reserved between the inner template and the outer template, the distance is used for pouring concrete, the lower tongue-and-groove template is positioned below the inner template and the outer template, the upper tongue-and-groove template is positioned above the inner template and the outer template, a space defined by the outer template, the inner template, the upper tongue-and-groove template and the lower tongue-and-groove template is used for pouring concrete, the lower tongue-and-groove template is connected with the outer template and the inner template, the upper tongue-and-groove template is connected with the outer template, a gap is reserved between the upper tongue-and-groove template and the inner template, and the gap is used for pouring concrete.
The box culvert template disclosed by the invention has the advantages of simple structure, practicability and firmness, realizes quick demolding through the lifting of the inner mold bracket, and is convenient for installing and detaching the inner template; but there are certain limitations to the removal of the end and bottom molds and the side molds.
The Chinese invention patent (CN 110394885A) discloses an integral hydraulic template applied to box culvert prefabrication, which comprises an inner mold component, a bottom mold component, an outer side mold component, an end mold component and a template blocking component; the inner mold component comprises an inner side template and an inner top template; the inner side templates comprise a first inner side template and a second inner side template; the bottom die member comprises a bottom die plate; the lateral form member includes a lateral form; the outer side template comprises a first outer side template and a second outer side template; the template blocking component comprises a first template blocking plate and a second template blocking plate; the end die member comprises a convex end die and a concave end die; and the space enclosed by the first outer side template, the second outer side template, the first inner side template, the second inner side template, the inner top template, the bottom template, the first blocking template, the second blocking template, the convex end template and the concave end template is used for pouring concrete.
The prefabricated steel formwork has the advantages of high prefabrication quality, stability, large surface rigidity and good flatness due to the adoption of the shaped steel formwork, but the assembly and disassembly are inconvenient due to the need of the inner and outer brackets; the hydraulic support is adopted, the support is unreliable, a hydraulic system is needed, and supporting facilities are complex.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an integral template without inner and outer supports, which is applied to a prefabricated box culvert.
The integral template without the inner and outer supports for prefabricating the assembled box culvert comprises an inner mold component, a bottom mold component, an outer mold component, a cover plate component, an end mold component and a pouring operation platform;
the inner mold component comprises an inner top template, a first inner side template, a second inner side template, a third inner side template, a fourth inner side template, a first supporting telescopic rod and a second supporting telescopic rod;
the cross sections of the first inner side template and the second inner side template are of L-shaped structures, the upper end of the first inner side template is hinged with the left side of the inner top template, the lower end of the first inner side template is hinged with a third inner side template, the upper end of the second inner side template is hinged with the right side of the inner top template, the lower end of the second inner side template is hinged with the upper end of a fourth inner side template, the inner sides of the lower ends of the first inner side template and the second inner side template are both provided with first keels, the inner sides of the third inner side template and the fourth inner side template are both provided with second keels, and both sides of the lower end of the inner top template are both provided with third keels;
the upper end of the first supporting telescopic rod is hinged with a third keel on the left side of the inner top template, the lower end of the first supporting telescopic rod is hinged with a second keel of a third inner side template, the upper end of the second supporting telescopic rod is hinged with a third keel on the right side of the inner top template, and the lower end of the second supporting telescopic rod is hinged with a second keel of a fourth inner side template;
the bottom die component is of a plate-shaped structure and is placed in a hardened and flat place;
the outer side die component comprises a first outer side die plate and a second outer side die plate, the first outer side die plate and the second outer side die plate are arranged on the outer side of the inner die component, the lower end faces of the first outer side die plate and the second outer side die plate are fixedly connected with the bottom die component through bolts, and fifth keels are arranged on the outer side faces of the first outer side die plate and the second outer side die plate;
the cover plate component comprises a first cover plate and a second cover plate, reinforcing rib plates are arranged on the upper end faces of the first cover plate and the second cover plate, an inlet for pouring concrete is also arranged between the first cover plate and the second cover plate, and the side edges of the first cover plate and the second cover plate are connected with the first outer side template and the second outer side template;
the end mold component comprises a first end mold plate and a second end mold plate, the first end mold plate and the second end mold plate are of a 'return' shape structure with the middle part penetrating through an opening, the end surfaces of the inner rings of the first end mold plate and the second end mold plate are connected with the end surfaces of the inner top mold plate, the first inner side mold plate, the second inner side mold plate, the third inner side mold plate and the fourth inner side mold plate through bolts, and the end surfaces of the outer sides of the first end mold plate and the second end mold plate are connected with the end surfaces of the bottom mold component, the first outer side mold plate, the second outer side mold plate, the first cover plate and the second cover plate through bolts;
the pouring operation platform is arranged on the outer side surfaces of the first outer side template and the second outer side template;
and a plurality of counter-pulling screw rods respectively penetrate through the fifth keel, the outer side die component, the concrete cavity, the inner die component and the first keel/second keel, and fasten and limit the outer side die component and the inner die component.
The invention has the beneficial effects that:
the invention has simple structure, convenient use and no support of the inner and outer brackets, and plays a supporting role by depending on the split bolt between the inner die component and the outer die component, and simultaneously, the inner die component has the function of contraction and bending and is convenient for demoulding.
Drawings
Fig. 1 is a front view of the present invention.
Figure 2 is a front view of the inner mold member of the present invention.
FIG. 3 is a front view of the bottom mold member, the outer mold member and the cover member in accordance with the present invention.
Fig. 4 is a front view of an end mold member of the present invention.
Fig. 5 is a schematic drawing of the pulling and shrinking of the inner mold member according to the present invention.
Fig. 6 is a schematic view of the present two-time concrete pouring.
Detailed Description
Referring to the attached drawings, the integral formwork without the inner and outer supports for prefabricating the assembled box culvert comprises an inner formwork component 1, a bottom formwork component 2, an outer formwork component 3, a cover plate component 4, an end formwork component 5 and a pouring operation platform 6;
the inner mold component 1 comprises an inner top mold plate 10, a first inner side mold plate 11, a second inner side mold plate 12, a third inner side mold plate 13, a fourth inner side mold plate 14, a first supporting telescopic rod 15 and a second supporting telescopic rod 16;
the cross sections of the first inner side template 11 and the second inner side template 12 are L-shaped structures, the upper end of the first inner side template 11 is hinged with the left side of the inner top template 10, the lower end of the first inner side template 11 is hinged with a third inner side template 13, the upper end of the second inner side template 12 is hinged with the right side of the inner top template 10, the lower end of the second inner side template 12 is hinged with the upper end of a fourth inner side template 14, the inner sides of the lower end of the first inner side template 11 and the lower end of the second inner side template 12 are both provided with a first keel 17, the inner sides of the third inner side template 13 and the fourth inner side template 14 are both provided with a second keel 18, and the two sides of the lower end of the inner top template 10 are both provided with third keels 19;
the upper end of a first supporting telescopic rod 15 is hinged with a third keel 19 on the left side of the inner top template 10, the lower end of the first supporting telescopic rod 15 is hinged with a second keel 18 of a third inner side template 13, the upper end of a second supporting telescopic rod 16 is hinged with the third keel 19 on the right side of the inner top template 10, and the lower end of the second supporting telescopic rod 16 is hinged with the second keel 18 of a fourth inner side template 14;
the bottom die member 2 is of a plate-shaped structure, and the bottom die member 2 is placed in a hardened and flat place;
the outer side die unit 3 comprises a first outer side die plate 30 and a second outer side die plate 31, the first outer side die plate 30 and the second outer side die plate 31 are arranged on the outer side of the inner die unit 1, the lower end surfaces of the first outer side die plate 30 and the second outer side die plate 31 are fixedly connected with the bottom die unit 2 through bolts, and fifth keel 32 is arranged on the outer side surfaces of the first outer side die plate 30 and the second outer side die plate 31;
the cover plate component 4 comprises a first cover plate 40 and a second cover plate 41, reinforcing rib plates are arranged on the upper end faces of the first cover plate 40 and the second cover plate 41, an inlet for pouring concrete is also arranged between the first cover plate 40 and the second cover plate 41, and the side edges of the first cover plate 40 and the second cover plate 41 are connected with the first outer side template 30 and the second outer side template 31;
the end mold member 5 comprises a first end mold plate 50 and a second end mold plate, the first end mold plate 50 and the second end mold plate are of a structure with the middle part passing through and opening in a shape like a Chinese character 'hui', the end surfaces of the inner rings of the first end mold plate 50 and the second end mold plate are respectively connected with the end surfaces of the inner top mold plate 10, the first inner side mold plate 11, the second inner side mold plate 12, the third inner side mold plate 13 and the fourth inner side mold plate 14 through bolts, and the end surfaces of the outer sides of the first end mold plate 50 and the second end mold plate are respectively connected with the end surfaces of the bottom mold member 2, the first outer side mold plate 30, the second outer side mold plate 31, the first cover plate 40 and the second cover plate 41 through bolts;
the pouring operation platform 6 is arranged on the outer side surfaces of the first outer side template 30 and the second outer side template 31;
a plurality of counter-pulling screws respectively penetrate through the fifth keel 32, the outer die component 3, the concrete cavity, the inner die component 1 and the first keel 17/second keel 18, and fasten and limit the outer die component 3 and the inner die component 1.
Furthermore, the inner side surfaces of the inner top formwork 10, the first inner formwork 11, the second inner formwork 12, the third inner formwork 13 and the fourth inner formwork 14 are all provided with grid-type reinforcing ribs.
Furthermore, a grid-type reinforcing rib plate and a plurality of fourth keels are arranged on the outer side of the lower end of the bottom die member 2.
Furthermore, a space surrounded by the inner top formwork 10, the first inner side formwork 11, the second inner side formwork 12, the third inner side formwork 13, the fourth inner side formwork 14, the bottom formwork 2, the first outer side formwork 30, the second outer side formwork 31, the first cover plate 40, the second cover plate 41, the first end formwork 50 and the second end formwork is a concrete chamber for pouring concrete.
Furthermore, the first and second telescopic support rods 15 and 16 comprise screws and sleeves, and the sleeves are screwed outside the screws.
The using method of the device comprises the following steps of template assembly:
a1: placing the bottom die member 2 at a proper position of a hardened and flat field by using a forklift, and moving the forklift away; a2: hoisting the steel reinforcement framework onto the bottom die component 2 by using a gantry crane;
a3: after the first outer side template 30 and the second outer side template 31 are hoisted in place by using a gantry crane, the first outer side template and the second outer side template are fixedly connected with the bottom die component 2 through bolts;
a4: after the inner die component 1 is assembled, the inner die component is placed in a steel bar framework by a forklift, the first supporting telescopic rod 15 and the second supporting telescopic rod 16 are adjusted to enable the inner top die plate 10, the first inner side die plate 11, the second inner side die plate 12, the third inner side die plate 13 and the fourth inner side die plate 14 to be in place, and then the first inner side die plate 11, the second inner side die plate 12, the third inner side die plate 13 and the fourth inner side die plate 14 are connected with the first outer side die plate 30 and the second outer side die plate 31 through opposite-pulling screw rods;
a5: after the first end template 50 and the second end template are hoisted in place by using a gantry crane, the first end template and the second end template are fastened and connected with the bottom template component 2, the first outer side template 30, the second outer side template 31, the inner top template 10, the first inner side template 11, the second inner side template 12, the third inner side template 13 and the fourth inner side template 14 through bolts;
a6: after the first cover plate 40 and the second cover plate 41 are hoisted in place by using a gantry crane, the first cover plate and the second cover plate are fixedly connected with the first end template 50, the second end template, the first outer side template 30 and the second outer side template 31 through bolts;
a7: run through the fifth fossil fragments 33 respectively through many counter-pulling screw rods, outside mould component 3, the concrete cavity, interior mould component 1 and first fossil fragments 17/second fossil fragments 18, it is spacing to fasten outside mould component 3 and interior mould component 1, pour the concrete through the entry, wait when concrete upper surface and third inboard template 13 and the 14 lower limb parallel and level of fourth inboard template, stop pouring the concrete, wait that the concrete is after half solidification state, pour the concrete through the entry once more, until concrete up end and first apron 40 and the laminating of second apron 41 lower surface, the concrete is half solidification state for preventing when pouring for the second time, the concrete overflows from third inboard template 13 and the 14 inside ends of fourth inboard template.
The using method of the device comprises the following steps:
b1: loosening all the bolts fixedly connected with the first cover plate 40 and the second cover plate 41, hoisting the first cover plate 40 and the second cover plate 41 by using a gantry crane, and placing the first cover plate and the second cover plate in a storage position;
b2: loosening all bolts and counter-pulling screws which are tightly connected with the internal mold component 1, adjusting the first supporting telescopic rod 15 and the second supporting telescopic rod 16 to enable the internal mold component 1 to contract, and separating the internal mold component 1 from the concrete culvert section;
the specific shrinkage process is as follows: the first supporting telescopic rod 15 and the second supporting telescopic rod 16 are rotated to be contracted, in the contraction process, the first supporting telescopic rod 15 and the second supporting telescopic rod 16 drive the third inner side template 13 and the fourth inner side template 14 to rotate inwards along the point A, the first supporting telescopic rod 15 and the second supporting telescopic rod 16 are continuously rotated, the third inner side template 13 and the fourth inner side template 14 can pull the first inner side template 11 and the second inner side template 12, the first inner side template 11 and the second inner side template 12 can rotate along the point C and the point D, and the inner mold component 1 is separated from the prefabricated culvert section;
b3: loosening all the bolts fixedly connected with the first end template 50 and the second end template, and hoisting the first end template 50 and the second end template by using a gantry crane to be placed at a storage position;
b4: loosening all the bolts fixedly connected with the first outer template 30 and the second outer template 31, and hoisting the first outer template 30 and the second outer template 31 by using a gantry crane to be placed at a storage position;
b5: the internal mold component 1 is moved out of the concrete culvert section by a forklift and is placed at a storage position;
b6: and (5) hoisting the prefabricated culvert sections by using a gantry crane, moving the culvert sections to a health maintenance area, and completing form removal.
Claims (5)
1. A no inside and outside support overall formwork for prefabricating assembled box culvert, its characterized in that: the device comprises an inner die component (1), a bottom die component (2), an outer side die component (3), a cover plate component (4), an end die component (5) and a pouring operation platform (6);
the inner mold component (1) comprises an inner top mold plate (10), a first inner side mold plate (11), a second inner side mold plate (12), a third inner side mold plate (13), a fourth inner side mold plate (14), a first supporting telescopic rod (15) and a second supporting telescopic rod (16);
the cross sections of a first inner side template (11) and a second inner side template (12) are of L-shaped structures, the upper end of the first inner side template (11) is hinged with the left side of an inner top template (10), the lower end of the first inner side template (11) is hinged with a third inner side template (13), the upper end of the second inner side template (12) is hinged with the right side of the inner top template (10), the lower end of the second inner side template (12) is hinged with the upper end of a fourth inner side template (14), first keels (17) are arranged on the inner sides of the lower ends of the first inner side template (11) and the second inner side template (12), second keels (18) are arranged on the inner sides of the third inner side template (13) and the fourth inner side template (14), and third keels (19) are arranged on two sides of the lower end of the inner top template (10);
the upper end of a first supporting telescopic rod (15) is hinged with a third keel (19) on the left side of the inner top template (10), the lower end of the first supporting telescopic rod (15) is hinged with a second keel (18) of a third inner side template (13), the upper end of a second supporting telescopic rod (16) is hinged with the third keel (19) on the right side of the inner top template (10), and the lower end of the second supporting telescopic rod (16) is hinged with the second keel (18) of a fourth inner side template (14);
the bottom die component (2) is of a plate-shaped structure, and the bottom die component (2) is placed in a hardened and flat place;
the outer side die unit (3) comprises a first outer side die plate (30) and a second outer side die plate (31), the first outer side die plate (30) and the second outer side die plate (31) are arranged on the outer side of the inner die unit (1), the lower end faces of the first outer side die plate and the second outer side die plate are fixedly connected with the bottom die unit (2) through bolts, and fifth keels (32) are arranged on the outer side faces of the first outer side die plate (30) and the second outer side die plate (31);
the cover plate component (4) comprises a first cover plate (40) and a second cover plate (41), reinforcing rib plates are arranged on the upper end faces of the first cover plate (40) and the second cover plate (41), an inlet for pouring concrete is further formed between the first cover plate (40) and the second cover plate (41), and the side edges of the first cover plate (40) and the second cover plate (41) are connected with the first outer side formwork (30) and the second outer side formwork (31);
the end mold component (5) comprises a first end mold plate (50) and a second end mold plate, the first end mold plate (50) and the second end mold plate are of a 'return' shape structure with openings penetrating through the middle parts, the end faces of inner rings of the first end mold plate (50) and the second end mold plate are connected with end faces of an inner top mold plate (10), a first inner side mold plate (11), a second inner side mold plate (12), a third inner side mold plate (13) and a fourth inner side mold plate (14) through bolts, and the end faces of the outer sides of the first end mold plate (50) and the second end mold plate are connected with end faces of a bottom mold component (2), a first outer side mold plate (30), a second outer side mold plate (31), a first cover plate (40) and a second cover plate (41) through bolts;
the pouring operation platform (6) is arranged on the outer side surfaces of the first outer side template (30) and the second outer side template (31);
and a plurality of counter-pulling screws respectively penetrate through the fifth keel (32), the outer side die component (3), the concrete cavity, the inner die component (1) and the first keel (17)/the second keel (18) to fasten and limit the outer side die component (3) and the inner die component (1).
2. The integral formwork without the inner and outer supports for the prefabricated box culvert according to claim 1, wherein: and grid type reinforcing rib plates are arranged on the inner side surfaces of the inner top template (10), the first inner side template (11), the second inner side template (12), the third inner side template (13) and the fourth inner side template (14).
3. The integral formwork without the inner and outer supports for the prefabricated box culvert according to claim 1, wherein: and a grid type reinforcing rib plate and a plurality of fourth keels are arranged on the outer side of the lower end of the bottom die component (2).
4. The integral formwork without the inner and outer supports for the prefabricated box culvert according to claim 1, wherein: the concrete pouring mould comprises an inner top template (10), a first inner side template (11), a second inner side template (12), a third inner side template (13), a fourth inner side template (14), a bottom mould component (2), a first outer side template (30), a second outer side template (31), a first cover plate (40), a second cover plate (41), a first end template (50) and a second end template, wherein a space enclosed by the first cover plate, the second cover plate (41), the first end template and the second end template is a concrete chamber and is used for pouring concrete.
5. The integral formwork without the inner and outer supports for the prefabricated box culvert according to claim 1, wherein: the first supporting telescopic rod (15) and the second supporting telescopic rod (16) comprise a screw rod and a sleeve, and the sleeve is in threaded connection with the outer side of the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111406145.8A CN113997391A (en) | 2021-11-24 | 2021-11-24 | A no inside and outside support integral formwork for prefabricating assembled box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111406145.8A CN113997391A (en) | 2021-11-24 | 2021-11-24 | A no inside and outside support integral formwork for prefabricating assembled box culvert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113997391A true CN113997391A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111406145.8A Pending CN113997391A (en) | 2021-11-24 | 2021-11-24 | A no inside and outside support integral formwork for prefabricating assembled box culvert |
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| CN (1) | CN113997391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683375A (en) * | 2022-03-31 | 2022-07-01 | 北京港创瑞博混凝土有限公司 | Box culvert template and construction method thereof |
-
2021
- 2021-11-24 CN CN202111406145.8A patent/CN113997391A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683375A (en) * | 2022-03-31 | 2022-07-01 | 北京港创瑞博混凝土有限公司 | Box culvert template and construction method thereof |
| CN114683375B (en) * | 2022-03-31 | 2023-08-08 | 北京港创瑞博混凝土有限公司 | Box culvert template and construction method thereof |
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