CN213061736U - Cast-in-place construction fabricated combined support frame for concrete box girder - Google Patents

Cast-in-place construction fabricated combined support frame for concrete box girder Download PDF

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Publication number
CN213061736U
CN213061736U CN202021722348.9U CN202021722348U CN213061736U CN 213061736 U CN213061736 U CN 213061736U CN 202021722348 U CN202021722348 U CN 202021722348U CN 213061736 U CN213061736 U CN 213061736U
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China
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steel pipe
box girder
concrete box
cast
place construction
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CN202021722348.9U
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Chinese (zh)
Inventor
周伟明
严来章
马乐乐
杨东
廖星星
吴腾飞
杨亮
侯立君
崔乐
王伟
王亚坤
苏红华
刘宗族
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China Railway 24th Bureau Group Co Ltd
Anhui Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
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China Railway 24th Bureau Group Co Ltd
Anhui Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
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Abstract

The utility model discloses an assembled combined supporting frame for cast-in-place construction of a concrete box girder, which is characterized in that pier studs with supporting tables are fixedly arranged on pier studs at two sides of the concrete box girder; assembling steel pipe support columns on a midspan reinforced concrete strip foundation in sections, and respectively arranging assembling type connecting systems in the longitudinal and transverse bridge directions of the steel pipe support columns; the top of pier stud staple bolt and steel pipe support column is respectively horizontal to setting up the spandrel girder, is provided with multiunit bailey roof beam longeron in the direction of the bridge in the top of spandrel girder, sets up the distribution roof beam in the top horizontal direction of bailey roof beam longeron, sets up the formula steel pipe scaffold of dish knot on the distribution roof beam, and the cast-in-place construction template of concrete box girder sets up the top of formula steel pipe scaffold is detained to the dish. The utility model discloses the commonality and the assembly of the cast-in-place construction support frame of concrete box girder have been improved greatly to the support frame is set up with bolted connection replacement tradition cutting welded mode to the festival section is assembled, has improved turnover material availability factor, practices thrift steel, accelerates the construction progress.

Description

Cast-in-place construction fabricated combined support frame for concrete box girder
Technical Field
The utility model relates to a technical field of bridge superstructure construction, more specifically say so a cast-in-place construction fabricated erection bracing frame of concrete box girder.
Background
In recent years, the assembled bridge is in a situation of expanding development, and the application effect is good. The assembled bridge has the advantages of high tooling level, energy conservation, environmental protection, high construction speed and the like, and is a concrete performance of practicing bridge construction industrialization. However, most of the traditional beam-column type support frames for the concrete box girders need operations such as on-site matching cutting and welding, so that the potential safety hazard of fire is high in on-site construction, the problems of low utilization rate of turnover materials and the like exist, and the development of the assembled bridge is severely restricted.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a for avoiding above-mentioned prior art not enough, provide the commonality strong, the degree of assemblability is high, a concrete box girder cast-in-place construction fabricated support frame that sets up through the method of festival section assembly and bolted connection to improve the availability factor of turnover material, practice thrift steel, accelerate the construction progress, eliminate the potential safety hazard.
The utility model discloses a solve technical problem and adopt following technical scheme:
the utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics are: pier column hoops with supporting tables are fixedly arranged on pier columns on two sides of the concrete box girder; assembling steel pipe support columns on a midspan reinforced concrete strip foundation in sections, and respectively arranging assembling type connecting systems in the longitudinal and transverse bridge directions of the steel pipe support columns; the top of pier stud staple bolt and steel pipe support column is respectively horizontal to setting up the spandrel girder the top of spandrel girder is provided with multiunit bailey roof beam longeron along the direction of the bridge the top horizontal direction of bailey roof beam longeron sets up the distribution roof beam set up the dish on the distribution roof beam and detain formula steel pipe scaffold, and the cast-in-place construction template of concrete box girder sets up the top of dish knot formula steel pipe scaffold.
The utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics also lie in: the pier column hoop is a bearing structure formed by fixing two semi-cylindrical structures on a pier column through bolts and provided with a support platform.
The utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics also lie in: the steel tube support column is formed by connecting seamless steel tubes with flanges at all sections through flange bolts to reach a set length.
The utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics also lie in: the assembled connecting system (6) is formed by connecting rod pieces between adjacent steel pipe supporting columns in a Z shape, supporting column hoops are installed on the set heights of the steel pipe supporting columns through bolt connection, and two ends of each rod piece are fixedly connected to the supporting column hoops in corresponding positions through bolts.
The utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics also lie in: the bottom of the steel pipe supporting column is connected with the strip foundation through a pre-buried foundation bolt.
The utility model discloses cast-in-place construction fabricated scaffold of concrete box girder's characteristics also lie in: according to the difference of concrete box girder load, the steel pipe support column sets up to many in the direction of crossing freely and quickly, and each steel pipe support column is indulged horizontal bridge and is all provided with pin-connected panel connected system to and vertical not co-altitude position.
Compared with the prior art, the utility model discloses beneficial effect embodies:
1. the utility model discloses a change tradition and set up the mode of concrete box girder cast-in-place construction beam column formula support frame through cutting welded method, adopt the segment to assemble and bolted connection sets up the support frame, improved the commonality and the assembly of support frame greatly, improve the availability factor of turnover material, practice thrift steel for the construction progress.
2. The utility model discloses establish the steel staple bolt on the pier stud with the cover and as one of formwork support frame's strong point, need not to handle and the steel pipe support column to the ground basis, simplified construction operation, reduced construction cost.
Drawings
Fig. 1 is a schematic view of the front elevation structure of the present invention;
fig. 2 is a schematic view of the cross-sectional structure of the present invention.
Reference numbers in the figures: 1 concrete box girder, 2 pier stud, 3 pier stud staple bolts, 4 bar foundations, 5 steel pipe support columns, 501 flanges, 502 seamless steel pipes, 6 pin-connected panel connection systems, 601 support column staple bolts, 602 member, 7 spandrel girder, 8 beiLei girder longeron, 9 distribution beam, 10 dish knot formula steel pipe scaffold, 11 rag bolt.
Detailed Description
Referring to fig. 1 and 2, in the fabricated combined support frame for cast-in-place construction of the concrete box girder in the embodiment, pier hoops 3 with support tables are fixedly installed on pier columns 2 on two sides of the concrete box girder 1; assembling steel pipe support columns 5 on the midspan reinforced concrete strip foundation 4 in sections, and arranging assembling type connecting systems 6 in the longitudinal and transverse bridge directions of the steel pipe support columns 5 respectively; the top of pier stud staple bolt 3 and steel pipe support post 5 is respectively the cross bridge to setting up spandrel girder 7, is provided with multiunit bailey roof beam longeron 8 in the bridge direction at the top of spandrel girder 7, sets up distribution beam 9 at the top cross bridge of bailey roof beam longeron 8 to setting up, sets up the dish on distribution beam 9 and detains formula steel pipe scaffold 10, and the cast-in-place construction template of concrete box girder sets up the top at dish knot formula steel pipe scaffold 10.
The corresponding technical measures in the embodiment also include:
after the construction of the lower part structure of the bridge is finished, installing a pier stud hoop 3 at a set position of a pier stud 2, wherein the pier stud hoop 3 is a bearing structure formed by connecting and fixing two semi-cylindrical structures on the pier stud through bolts and provided with a supporting platform; in order to enhance the friction force between the pier stud hoop 3 and the pier stud 2, a layer of rubber strip with the thickness of 5mm is adhered on the inner wall of the pier stud hoop 3.
The steel tube support column 5 is formed by connecting seamless steel tubes 502 with flanges 501 through flange bolts to reach a set length.
The assembled connection system 6 is formed by connecting the adjacent steel pipe support columns 5 in a Z shape through the rod members 602, the support column hoops 601 are installed at the set height of the steel pipe support columns 5 through bolts, and two ends of the rod members 602 are fixedly connected to the support column hoops 601 at the corresponding positions through bolts.
The bottom of the steel pipe support column 5 is connected with the strip foundation 4 through a pre-buried foundation bolt 11.
According to the difference of concrete box girder 1 load, steel pipe support column 5 sets up to many in the direction of crossing freely and quickly, and each steel pipe support column 5 is indulged horizontal bridge and vertical not co-altitude position and all is provided with pin-connected panel connection 6 to reach overall stability.
In construction, foundation bolts 11 need to be embedded when the strip-shaped foundation 4 is poured in the midspan, and after the concrete strength meets the requirement, the steel pipe support columns 5 and the assembled connection systems 6 between the steel pipe support columns are installed on the foundation bolts 11; the steel pipe supporting column 5 and the assembled connecting system are both formed matched products, wherein the steel pipe supporting column 5 is a seamless steel pipe 502 with different module lengths (0.2-6 m different) and a flange 501, the diameter of the seamless steel pipe 502 is 630mm, and the wall thickness is 12 m; the support column hoop 601 is formed by fixing two semi-cylindrical bodies with the height of 0.2m on the surface of a steel tube support column 5 through bolts, and the rod piece is 10# channel steel.
According to different loads, the bearing beam 7 can also adopt double (multiple) spliced I-shaped steel or H-shaped steel; in order to prevent the bearing beam 7 from locally buckling, a plurality of stiffening plates are welded at the bearing beam 7 plate above the corresponding Bailey beam longitudinal beam 8, and the stiffening plates are steel plates with the thickness of 10 mm; in order to limit the displacement between the longitudinal beams 8 of the Bailey beams of the bearing beam 7, a limiter is arranged between the longitudinal beams 8 of the Bailey beams, 5 groups of the Bailey beams 8 are arranged on the bearing beam 7 along the bridge direction as shown in fig. 2, the distance between two adjacent groups of the longitudinal beams 8 of the Bailey beams is 1.1m, a single group of the Bailey beams are assembled into a whole by adopting 90-type supporting frames, and the group number, the layer number and the distance of the Bailey beams 8 can be properly adjusted or a reinforcing chord can be arranged to meet the requirement of upper load according to the difference of the load size. The Bailey beam longitudinal beam 8 is formed by assembling 321 type Bailey pieces, a reinforcing chord, a support frame, a pin shaft and a bolt, and is a shaping matched product.
The distribution beams 9 adopt I-shaped steel structures, and the space between the distribution beams 9 and the types of the I-shaped steel can be properly adjusted according to the load of the concrete box girder; the disc-buckled type steel pipe scaffold 10 is a shaping matched product, and if the concrete box girder 1 is a box girder with an equal cross section or a longitudinal slope is small, the disc-buckled type steel pipe scaffold 10 can be cancelled, or a bottom template of the concrete box girder 1 can be adjusted by other methods.
In order to ensure the construction safety, after the assembled combined support frame is erected, the support frame needs to be pre-pressed according to the standard requirement, and the upper concrete box girder can be formally constructed when the pre-pressing result meets the requirement.

Claims (6)

1. The utility model provides a cast-in-place construction assembled sectional shelf of concrete box girder which characterized by: pier column hoops (3) with supporting tables are fixedly arranged on pier columns (2) on two sides of the concrete box girder (1); assembling steel pipe support columns (5) on the midspan reinforced concrete strip foundation (4) in sections, and arranging assembling type connecting systems (6) in the longitudinal and transverse bridge directions of the steel pipe support columns (5) respectively; the top of pier stud staple bolt (3) and steel pipe support post (5) is respectively horizontal to setting up spandrel girder (7) the top of spandrel girder (7) is provided with multiunit bailey roof beam longeron (8) along the bridge direction the top horizontal bridge of bailey roof beam longeron (8) is to setting up distributor beam (9) set up the dish on distributor beam (9) and detain formula steel pipe scaffold (10), and the cast-in-place construction template setting of concrete box girder is in the top of dish knot formula steel pipe scaffold (10).
2. The fabricated combined support frame for cast-in-place construction of the concrete box girder as recited in claim 1, wherein: the pier stud hoop (3) is a bearing structure formed by fixing two semi-cylindrical structures on the pier stud through bolt connection and a supporting platform.
3. The fabricated combined support frame for cast-in-place construction of the concrete box girder as recited in claim 1, wherein: the steel tube supporting column (5) is formed by connecting seamless steel tubes (502) with flanges (501) at all sections through flange bolts to reach a set length.
4. The fabricated combined support frame for cast-in-place construction of the concrete box girder as recited in claim 1, wherein: the assembled connecting system (6) is formed by connecting a rod piece (602) between adjacent steel pipe supporting columns (5) in a Z-shaped mode, a supporting column hoop (601) is installed on the set height of each steel pipe supporting column (5) through bolts in a connected mode, and two ends of the rod piece (602) are fixedly connected to the supporting column hoops (601) in corresponding positions through bolts respectively.
5. The fabricated combined support frame for cast-in-place construction of the concrete box girder as recited in claim 1, wherein: the bottom of the steel pipe support column (5) is connected with the strip foundation (4) through a pre-buried foundation bolt (11).
6. The fabricated combined support frame for cast-in-place construction of the concrete box girder as recited in claim 1, wherein: according to the difference of concrete box girder (1) load, steel pipe support column (5) set up to many in the direction of crossing freely and quickly the bridge, and each steel pipe support column (5) is indulged horizontal bridge and is all provided with pin-connected panel connected system (6) to vertical not co-altitude position.
CN202021722348.9U 2020-08-18 2020-08-18 Cast-in-place construction fabricated combined support frame for concrete box girder Active CN213061736U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021722348.9U CN213061736U (en) 2020-08-18 2020-08-18 Cast-in-place construction fabricated combined support frame for concrete box girder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021722348.9U CN213061736U (en) 2020-08-18 2020-08-18 Cast-in-place construction fabricated combined support frame for concrete box girder

Publications (1)

Publication Number Publication Date
CN213061736U true CN213061736U (en) 2021-04-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021722348.9U Active CN213061736U (en) 2020-08-18 2020-08-18 Cast-in-place construction fabricated combined support frame for concrete box girder

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CN (1) CN213061736U (en)

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