CN107524089B - Lightweight, quick-installation and disassembly small box girder steel formwork and construction method - Google Patents
Lightweight, quick-installation and disassembly small box girder steel formwork and construction method Download PDFInfo
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- CN107524089B CN107524089B CN201710748319.6A CN201710748319A CN107524089B CN 107524089 B CN107524089 B CN 107524089B CN 201710748319 A CN201710748319 A CN 201710748319A CN 107524089 B CN107524089 B CN 107524089B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
本发明涉及轻便化快速安装及拆卸式小箱梁钢模板和施工方法，包括侧模、底膜和芯模，底模，侧模在底部设置限位方钢，同底模上设置的限位座体连接实现快速安装，芯模底部通过螺纹钢固定，在施工过程中，设置2个底模，在浇筑施工完成后，可通过一次拆除芯模和侧模，安装到另一个底模进行连续施工。本发明同现有技术相比，具有施工简单，可连续施工的优点，模具拼接快速，在制作完成一个小箱梁后可以直接吊装进行下一个小箱梁的制作，增加施工效率。
The invention relates to a lightweight, quick-installation and disassembly small box girder steel formwork and a construction method, which includes side formwork, a bottom membrane and a core formwork. The base body connection enables quick installation. The bottom of the core form is fixed with rebar. During the construction process, two bottom forms are set. After the pouring construction is completed, the core form and side form can be removed at one time and installed on another bottom form for continuous operation. construction. Compared with the existing technology, the present invention has the advantages of simple construction, continuous construction, and fast mold splicing. After completing one small box beam, it can be directly hoisted to make the next small box beam, thereby increasing construction efficiency.
Description
[ technical field ]
The invention relates to a portable rapid-installation and disassembly small box girder steel template and a construction method.
[ background Art ]
The bridge engineering middle beam is hollow, and flanges are arranged on two sides of the upper part of the middle beam, and the middle beam is similar to a box, so that the bridge is named. Single box, multiple boxes, etc.
The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-situ box girder. The box girder combined bridge girder erection machine prefabricated in the independent place can be erected after the lower engineering is completed, so that the engineering progress can be accelerated, and the construction period can be saved; cast-in-situ box girders are mostly used for large continuous bridges. The materials are commonly used at present, and the materials are mainly two types, namely a prestressed reinforced concrete box girder and a steel box girder. The prestressed reinforced concrete box girder is constructed on site, and besides longitudinal prestress, transverse prestress is arranged on some of the prestressed reinforced concrete box girders; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure and also has a part of reinforced concrete pavement layers.
The steel box girder, also called as a steel plate box girder, is a common structural form of a large-span bridge. Are commonly used on bridges with larger spans. The shape resembles a box and is called a steel box girder.
However, in the existing construction method of the small box girder, the splicing construction of the templates is complex, and in the construction process, the multi-end small box girder needs to be manufactured one by one in sequence, so that the time consumption is long.
[ summary of the invention ]
The invention aims to solve the problems that the small box girder construction is complex, the template installation is long, and the continuous construction is not facilitated in the prior art.
In order to achieve the above purpose, a portable rapid-mounting and dismounting small box girder steel template is provided, which comprises a side die, a bottom die and a core die,
the bottom of the side die is provided with limit square steel along the length direction of the die,
the two sides of the bottom die are provided with a limit seat body for fixing limit square steel along the length direction of the die, the upper surface of the limit seat body is provided with a sleeper block, the outer end part of the limit seat body is provided with a pin hole, a fixing bolt is inserted into the pin hole, the lower part of the fixing bolt is provided with an inserting piece matched with the pin hole, the inner side of the fixing bolt is provided with a clamping surface for clamping the limit square steel, the inserting piece of the fixing bolt is inserted into the pin hole, the clamping surface, the sleeper block and the side surface of the bottom die clamp the limit square steel at the bottom of the fixed side die so as to realize the installation of the side die and the bottom die,
the center of the bottom of the core mold is uniformly provided with a plurality of upper thread fixing holes along the length direction of the mold, the upper surface of the bottom mold is provided with lower thread fixing holes corresponding to the upper thread fixing holes along the length direction of the mold, and the corresponding upper thread fixing holes and the corresponding lower thread fixing holes are fixed through threaded steel or taper nuts so as to realize the installation of the core mold.
Above-mentioned portable quick installation and dismantlement formula small box girder steel form still has following optimization structure:
the side die is formed by connecting a left side die and a right side die through opposite pulling.
The side mold is formed by connecting a left side mold and a right side mold through opposite pulling.
The left side mold and the right side mold both comprise a molding surface and a fixed frame.
Reinforcing pieces are arranged around the threaded fixing holes of the bottom die.
An end form is also included.
The multi-section core mold is arranged along the length direction of the mold.
The lower part of the clamping surface is provided with a slot matched with the wall of the pin hole, and the hole wall is inserted into the slot while the inserting piece is inserted into the pin hole.
The invention also discloses a construction method of the small box girder, which adopts the portable rapid installation and disassembly type small box girder steel template with the structure to manufacture the small box girder and comprises the following steps:
step one, arranging two bottom dies on site,
step two, connecting the mandrel on one of the bottom dies through the deformed steel bars,
step three, the side molds at two sides are integrally arranged on the supporting legs at two sides of the bottom mold through C-shaped lifting hooks,
step four, placing the limit square steel of the side die on the sleeper block, inserting a fixing bolt, clamping the limit square steel at the bottom of the side die by the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to realize the installation of the side die and the bottom die,
fifthly, installing an end mould to pour the small box girder,
step six, after pouring and manufacturing the small box girder, the side dies on two sides are integrally disassembled and mounted on the supporting legs on two sides of the other bottom die through the C-shaped lifting hooks,
step seven, dismantling the core mould, connecting the core mould on the other bottom mould through the deformed steel bar,
and step eight, detaching the fixing bolt to loosen the clamping of the limit square steel, detaching the side die, placing the limit square steel of the side die on a sleeper block of the bottom die, inserting the fixing bolt, and clamping the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to clamp and fix the limit square steel at the bottom of the side die so as to realize the installation of the side die and the bottom die.
Compared with the prior art, the invention has the advantages of simple construction and continuous construction, the die splicing is rapid, and the next small box girder can be directly hoisted to be manufactured after the small box girder is manufactured, so that the construction efficiency is improved.
[ description of the drawings ]
FIG. 1 is an isometric view of a lightweight quick-install and disassemble small box girder steel form;
FIG. 2 is a schematic view of a spliced cross section of a lightweight quick-install and disassemble small box girder steel form;
FIG. 3 is a schematic view of a spliced section of a mandrel and a bottom die;
in the figure, a core mold 2, a side mold 3, a bottom mold 4, a limiting seat body 5, a limiting square steel 6, a pillow body 7, a fixing bolt 8, a supporting leg 9, finish rolling screw steel and a conical nut 10, and a counter pull rod.
Detailed description of the preferred embodiments
The present invention is further described below with reference to the examples and drawings, which are provided for illustration only and are not intended to limit the scope of the present invention.
The portable rapid-mounting and dismounting small box girder steel template in the embodiment has the following structure,
as shown in fig. 2, includes a side mold, a bottom mold and a core mold,
the side dies are formed by connecting left and right side dies by opposite pulling the pull rod, the left and right side dies each comprise a molding surface and a fixing frame, the fixing frame can be made of rigid materials such as square steel for supporting the molding surface, the structure is clear to the person skilled in the art, the opposite pulling pull rod can be arranged by opposite pulling after the pull rod connecting node is arranged on the left and right side faces, and the opposite fixing of the left and right side dies is realized by connecting the left and right side dies by opposite pulling, in the embodiment, unlike the prior art, the bottom of the side die is provided with limit square steel along the die length direction,
the two sides of the bottom die are provided with a limit seat body for fixing limit square steel along the length direction of the die, the upper surface of the limit seat body is provided with a sleeper block, the outer end part of the limit seat body is provided with a pin hole, a fixing bolt is inserted into the pin hole, the lower part of the fixing bolt is provided with an inserting sheet matched with the pin hole, the inner side of the fixing bolt is provided with a clamping surface for clamping the limit square steel, the inserting sheet of the fixing bolt is inserted into the pin hole, the lower part of the clamping surface is provided with an inserting slot matched with the hole wall of the pin hole, the hole wall is inserted into the inserting slot while the inserting sheet is inserted into the pin hole, the clamping surface, the sleeper block and the side face of the bottom die clamp the limit square steel at the bottom of the fixed side die so as to realize the installation of the side die and the bottom die,
as shown in fig. 3, a plurality of upper thread fixing holes are uniformly formed in the center of the bottom of the core mold along the longitudinal direction of the mold, lower thread fixing holes corresponding to the upper thread fixing holes are formed in the upper surface of the bottom mold along the longitudinal direction of the mold, the corresponding upper thread fixing holes and the corresponding lower thread fixing holes are fixed through finish rolling threaded steel and conical nuts, reinforcing pieces are arranged around the thread fixing holes of the bottom mold so as to realize the installation of the core mold, and the light rapid installation and disassembly type small box girder steel molding plate after the installation is shown in fig. 1.
Before pouring, end molds are arranged at the front end and the rear end of the lightweight rapid-mounting and dismounting small box girder steel template for end sealing,
the small box girder is manufactured by adopting the portable rapid installation and disassembly small box girder steel template with the structure, and part of steps adopt the prior art in the manufacturing process, the small box girder is not unfolded in the invention, and the prior steps comprise such steps as,
the invention only improves the structure and construction method of the box girder mould to realize the continuous manufacture of the small box girder, and comprises the following steps:
step one, arranging two bottom dies on site,
step two, connecting the mandrel on one of the bottom dies through the deformed steel bars,
step three, the side dies at two sides are integrally arranged on the supporting legs at two sides through C-shaped lifting hooks,
step four, placing the limit square steel of the side die on the sleeper block, inserting a fixing bolt, clamping the limit square steel at the bottom of the side die by the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to realize the installation of the side die and the bottom die,
fifthly, installing an end mould to pour the small box girder,
step six, after pouring and manufacturing the small box girder, the side dies on two sides are integrally disassembled and mounted on the other bottom die supporting leg through the C-shaped lifting hooks,
step seven, dismantling the core mould, and connecting the core mould on the other bottom mould through the deformed steel bars;
and eighth, detaching the fixing bolt to loosen the clamping of the limit square steel, detaching the side die, placing the limit square steel of the side die on a sleeper block of the bottom die, inserting the fixing bolt, and clamping the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to clamp and fix the limit square steel at the bottom of the side die so as to realize the installation of the side die and the bottom die.
After the die is removed, the steps of hole sealing, health preserving, roughening and the like are also needed to be carried out on the small box girder,
the construction steps can enable a group of side forms and the core mould to continuously manufacture the small box girder, and the construction quality can be guaranteed on the premise of saving cost.
Claims (8)
1. The utility model provides a lightweight quick installation and dismantlement formula small box girder steel form, includes side form, die block and mandrel, its characterized in that:
the bottom of the side die is provided with limit square steel along the length direction of the die,
the two sides of the bottom die are provided with a limit seat body for fixing limit square steel along the length direction of the die, the upper surface of the limit seat body is provided with a sleeper block, the outer end part of the limit seat body is provided with a pin hole, a fixing bolt is inserted into the pin hole, the lower part of the fixing bolt is provided with an inserting sheet matched with the pin hole, the inner side of the fixing bolt is provided with a clamping surface for clamping the limit square steel, the lower part of the clamping surface is provided with a slot matched with the wall of the pin hole, the inserting sheet is inserted into the slot while the inserting sheet is inserted into the pin hole, the inserting sheet of the fixing bolt is inserted into the pin hole, the clamping surface, the sleeper block and the side face of the bottom die clamp the limit square steel at the bottom of the fixed side die so as to realize the installation of the side die and the bottom die,
the center of the bottom of the core mold is uniformly provided with a plurality of upper thread fixing holes along the length direction of the mold, the upper surface of the bottom mold is provided with lower thread fixing holes corresponding to the upper thread fixing holes along the length direction of the mold, and the corresponding upper thread fixing holes and the corresponding lower thread fixing holes are fixed through threaded steel or taper nuts so as to realize the installation of the core mold.
2. The portable rapid mounting and dismounting small box girder steel form of claim 1, wherein the side forms are formed by connecting left side forms and right side forms through counter-pulling.
3. The portable rapid mounting and dismounting small box girder steel form according to claim 1 or 2, wherein a plurality of supporting legs are arranged on two sides of the side form along the length direction of the form for supporting and fixing.
4. The portable quick install and detach trabecula steel form of claim 2, wherein the left and right side forms each include a molding surface and a fixed frame.
5. The portable rapid mounting and dismounting small box girder steel template according to claim 1, wherein the reinforcing piece is arranged around the screw thread fixing hole of the bottom die.
6. The portable quick install and detach trabecula steel form of claim 1 further comprising an end form.
7. The portable quick install and detach trabecula steel form of claim 1 wherein the form length is configured with a multi-segment mandrel.
8. The construction method of the small box girder is characterized in that the small box girder is manufactured by adopting the lightweight rapid installation and disassembly small box girder steel template according to any one of claims 1 to 7, and comprises the following steps:
step one, arranging two bottom dies on site,
step two, connecting the mandrel on one of the bottom dies through the deformed steel bars,
step three, the side molds at two sides are integrally arranged on the supporting legs at two sides of the bottom mold through C-shaped lifting hooks,
step four, placing the limit square steel of the side die on the sleeper block, inserting a fixing bolt, clamping the limit square steel at the bottom of the side die by the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to realize the installation of the side die and the bottom die,
fifthly, installing an end mould to pour the small box girder,
step six, after pouring and manufacturing the small box girder, the side dies on two sides are integrally disassembled and mounted on the supporting legs on two sides of the other bottom die through the C-shaped lifting hooks,
step seven, dismantling the core mould, connecting the core mould on the other bottom mould through the deformed steel bar,
and step eight, detaching the fixing bolt to loosen the clamping of the limit square steel, detaching the side die, placing the limit square steel of the side die on a sleeper block of the bottom die, inserting the fixing bolt, and clamping the clamping surface of the fixing bolt, the sleeper block and the side surface of the bottom die to clamp and fix the limit square steel at the bottom of the side die so as to realize the installation of the side die and the bottom die.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710748319.6A CN107524089B (en) | 2017-08-28 | 2017-08-28 | Lightweight, quick-installation and disassembly small box girder steel formwork and construction method |
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| CN201710748319.6A CN107524089B (en) | 2017-08-28 | 2017-08-28 | Lightweight, quick-installation and disassembly small box girder steel formwork and construction method |
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| CN107524089B true CN107524089B (en) | 2023-10-24 |
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| CN112482247B (en) * | 2020-11-21 | 2022-06-21 | 江苏永联精筑建设集团有限公司 | End template for cantilever beam hanging basket construction and cantilever beam hanging basket pouring construction method |
| CN112372807A (en) * | 2020-11-30 | 2021-02-19 | 上海公路桥梁（集团）有限公司 | Prefabricated box girder template |
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