CN112123564A - Manufacturing method of steel bar part for segmental assembling concrete box girder - Google Patents

Manufacturing method of steel bar part for segmental assembling concrete box girder Download PDF

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Publication number
CN112123564A
CN112123564A CN202010864298.6A CN202010864298A CN112123564A CN 112123564 A CN112123564 A CN 112123564A CN 202010864298 A CN202010864298 A CN 202010864298A CN 112123564 A CN112123564 A CN 112123564A
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China
Prior art keywords
mesh
web
pair
sheets
top plate
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Pending
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CN202010864298.6A
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Chinese (zh)
Inventor
陈鸣
王敏
程茂林
巫兴发
郑和晖
肖林
李伟幸
雷世松
田飞
彭成明
吴中正
陈斌
刘立海
叶浪
李刚
代浩
王江成
徐鑫
刘力
陈平
陈飞翔
杨荣辉
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CCCC Second Harbor Engineering Co
CCCC Highway Long Bridge Construction National Engineering Research Center Co Ltd
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CCCC Second Harbor Engineering Co
CCCC Highway Long Bridge Construction National Engineering Research Center Co Ltd
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Application filed by CCCC Second Harbor Engineering Co, CCCC Highway Long Bridge Construction National Engineering Research Center Co Ltd filed Critical CCCC Second Harbor Engineering Co
Priority to CN202010864298.6A priority Critical patent/CN112123564A/en
Publication of CN112123564A publication Critical patent/CN112123564A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The invention discloses a method for manufacturing a steel bar part for a segmental assembled concrete box girder, wherein the steel bar part consists of a plurality of steel bar meshes, and the method for manufacturing the steel bar part comprises the following steps: step S1, presetting the type and size of the reinforcing mesh according to the overall size of the reinforcing part; step S2, welding the steel mesh sheets according to the type and the size of the steel mesh sheets preset in the step S1 to obtain a plurality of target steel mesh sheets; step S3, assembling the plurality of target reinforcing mesh sheets in the step S3 to obtain the reinforcing bar part; wherein the types of the reinforcing mesh comprise: the bottom plate bottom layer mesh, the bottom plate top layer mesh, the web outer side mesh, the web inner side mesh, the wing plate bottom layer mesh, the top plate bottom layer mesh and the top plate top layer mesh. Can be widely applied to the technical field of manufacturing methods of building equipment.

Description

Manufacturing method of steel bar part for segmental assembling concrete box girder
Technical Field
The invention relates to the technical field of manufacturing methods of building equipment. More particularly, the invention relates to a method for manufacturing a reinforcement part for a segmental assembling concrete box girder.
Background
The method for assembling concrete box girder sections is one of the main techniques for bridge construction, namely, the method for constructing the bridge comprises the steps of dividing the concrete box girder into sections along the longitudinal direction, transporting the sections to a bridge site for assembling after prefabrication in a factory, and applying prestress to integrate the sections. In the factory prefabrication process of the segmental assembled concrete box girder, the manufacturing efficiency of the steel reinforcement framework is of great importance to the influence of the manufacturing period of the segmental girder.
In the traditional method for manufacturing the section-assembled concrete box girder steel bar framework, single steel bars are bent and processed, and are bound at the cross points after being assembled to form the steel bar framework. With the development of science and technology and economy, the method for manufacturing the steel reinforcement framework based on manual on-site binding is difficult to meet the increasingly improved social requirements in the aspects of construction efficiency, energy conservation, environmental protection, quality safety and the like.
Disclosure of Invention
The invention aims to provide a manufacturing method of a reinforcing steel bar component for segmental assembling of a concrete box girder, which is high in assembling efficiency of the reinforcing steel bar component and saves labor cost.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method of manufacturing a reinforced part for segmental assembling of a concrete box girder, the reinforced part being composed of a plurality of reinforcing mesh sheets, the method of manufacturing the reinforced part including the steps of:
step S1, presetting the type and size of the reinforcing mesh according to the overall size of the reinforcing part;
step S2, welding the steel mesh sheets according to the type and the size of the steel mesh sheets preset in the step S1 to obtain a plurality of target steel mesh sheets;
step S3, assembling the plurality of target reinforcing mesh sheets in the step S3 to obtain the reinforcing bar part;
wherein the types of the reinforcing mesh comprise: the bottom plate bottom layer mesh, the bottom plate top layer mesh, the web outer side mesh, the web inner side mesh, the wing plate bottom layer mesh, the top plate bottom layer mesh and the top plate top layer mesh.
Preferably, the step S3 of assembling the plurality of target rebar meshes includes the following steps:
a1, paving a bottom mesh of a bottom plate to form a horizontal reinforcing steel bar mesh surface;
step A2, vertically arranging a pair of opposite web plate outer side net sheets at two ends of the upper surface of the steel bar net surface;
step A3, arranging a plurality of bottom plate frame vertical bars on the steel bar net surface in the step A1 at intervals;
step A4, laying a bottom plate top layer mesh surface with the same volume as the reinforcing steel bar mesh surface on the upper part of the reinforcing steel bar mesh surface positioned on the bottom plate frame vertical bars to form a mesh bottom plate;
step A5, web frame studs are respectively arranged on the opposite surfaces of a pair of web outer side meshes;
step A6, arranging a pair of web inner meshes with the same volume as the web outer meshes on the web frame studs on the opposite surfaces of the pair of web outer meshes respectively to form a pair of net-shaped webs;
a step a7 of disposing a horizontal web sheet on top of each of the pair of web sheets in the step a6, without contacting the web sheets;
step A8, arranging the top plate bottom layer mesh on the upper surfaces of the pair of wing plate bottom layer meshes, and connecting the pair of wing plate bottom layer meshes into a whole;
step A9, arranging a plurality of top plate frame vertical ribs on the bottom layer mesh of the top plate at intervals;
and A10, welding a top plate top layer mesh above the top plate bottom layer mesh on the top plate frame studs, wherein the volume of the top plate top layer mesh covers the pair of wing plate bottom layer mesh and the top plate bottom layer mesh to form a net-shaped top plate.
Preferably, the bottom plate frame studs, the top plate frame studs and the web frame studs all comprise,
the pair of rod-shaped studs are oppositely arranged and are connected with each other at intervals through a plurality of rod-shaped transverse studs.
Preferably, the ends of the pair of web outer side meshes far away from the bottom plate bottom mesh are opposite to form a first extension part, and the ends of the pair of web inner side meshes far away from the bottom plate bottom mesh are towards the sides far away from each other to form a second extension part;
the first extending part and the second extending part are buckled with each other, and a closed part is formed between the pair of web outer side net sheets and the pair of web inner side net sheets respectively.
Preferably, the closing part of the first extension part and the second extension part are buckled by a plurality of hoops.
Preferably, the steps A1 to A9 are all formed by binding through a jig frame.
Preferably, when the top plate frame stud, the bottom plate frame stud and the web plate frame stud are installed, main studs of the mesh sheets attached to the top plate frame stud, the bottom plate frame stud and the web plate frame stud need to be removed, so that one of the rod-shaped studs of the top plate frame stud, the bottom plate frame stud and the web plate frame stud serves as the removed main stud.
Preferably, the method further comprises a manual binding process, wherein the binding process sequentially comprises that connecting components are arranged between the pair of reticular webs and the reticular top plate and the reticular bottom plate.
The invention at least comprises the following beneficial effects:
1. the steel bar part equipment is integrated in a flow process, and compared with a traditional factory binding process, the operation environment is improved, the labor intensity is reduced, and the safety risk is reduced.
2. The steel bar part is high in preparation efficiency, and the numerical control cutting machine, the mesh welding machine and the bending machine are adopted and assembled in cooperation with the jig frame, so that the processing precision is greatly improved, the assembly period is shortened, and the manufacturing efficiency is improved.
3. The method provided by the invention has high standardization degree, is easy to realize intelligent control of machines, is easier to monitor on site compared with the traditional manufacturing method, and can greatly improve the manufacturing efficiency and quality.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is an exploded view of a structure of a reinforcement part for a segmental assembled concrete box girder according to the present invention;
FIG. 2 is an assembly view of the apparatus for assembling reinforcement members for concrete box girders in sections according to the present invention;
FIG. 3 is a diagram of the positional relationship of the web frame studs and the outer web of the present invention;
FIG. 4 is a diagram of the positional relationship of the floor frame studs and the floor mesh of the present invention;
FIG. 5 is a diagram showing the positional relationship between the roof truss studs and the web of the bottom layer of the wing panel of the present invention.
The specification reference numbers indicate: 1. bottom plate bottom net piece, 2, bottom plate top layer net piece, 3, web outside net piece, 4, web inboard net piece, 5, pterygoid lamina bottom net piece, 6, roof bottom net piece, 7, roof top layer net piece, 8, bottom plate frame founds the muscle, 9, web frame founds the muscle, 10, roof frame founds the muscle, 11, netted bottom plate, 12, netted web, 13, netted roof.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, a method for manufacturing a reinforcement part for a segmental assembled concrete box girder, the reinforcement part being composed of a plurality of reinforcement meshes, the method for manufacturing the reinforcement part comprising the steps of:
step S1, presetting the type and size of the reinforcing mesh according to the overall size of the reinforcing part;
step S2, welding the steel mesh sheets according to the type and the size of the steel mesh sheets preset in the step S1 to obtain a plurality of target steel mesh sheets;
step S3, assembling the plurality of target reinforcing mesh sheets in the step S3 to obtain the reinforcing bar part;
wherein the types of the reinforcing mesh comprise: the device comprises a bottom plate bottom layer mesh 1, a bottom plate top layer mesh 2, a web outer side mesh 3, a web inner side mesh 4, a wing plate bottom layer mesh 5, a top plate bottom layer mesh 6 and a top plate top layer mesh 7.
In the technical scheme, for each reinforcing mesh, the influence of the installation sequence needs to be considered, and the longitudinal ribs at the position where the position conflicts can be eliminated from the mesh in the mesh hoisting process. In addition, the longitudinal ribs at the positions of the erection ribs also need to be removed from the mesh. The erection bar is formed by welding two parallel steel bars and vertical steel bars arranged between the two parallel steel bars at equal intervals, and is used for determining the relative position of a steel bar mesh and preventing the quality problem of the mesh caused by dead weight or installation deviation. Two parallel reinforcing bars in the length direction in the vertical bars are the same as the main reinforcing bars of the net piece in specification. For the closed hooping of the web, the closed hooping needs to be disassembled into two opposite semi-rings for the convenience of netting manufacture.
In another technical solution, the assembling of the plurality of target reinforcing mesh sheets in step S3 includes the following steps:
a1, paving a bottom plate bottom layer mesh sheet 1 to form a horizontal reinforcing steel bar mesh surface;
step A2, vertically arranging a pair of opposite web plate outer side net sheets 3 at two ends of the upper surface of the steel bar net surface;
step A3, arranging a plurality of bottom plate frame vertical bars 8 on the steel bar mesh surface in the step A1 at intervals;
step A4, laying a top-layer mesh surface of the bottom plate with the same volume as the mesh surface of the steel bars on the upper part of the bottom plate frame vertical bars 8 on the mesh surface of the steel bars to form a mesh bottom plate 11;
step A5, respectively arranging web frame studs 9 on the opposite surfaces of a pair of web outer side net sheets 3;
step A6, arranging a pair of web inner meshes 4 with the same volume as the web outer meshes 3 on the web frame studs 9 on the opposite surfaces of the pair of web outer meshes 3 respectively to form a pair of net webs 12;
a step a7 of disposing a horizontal web sheet 5 on top of each of the pair of web sheets 12 in the step a6, without the web sheets 5 contacting each other;
step A8, arranging the top plate bottom layer mesh sheet 6 on the upper surfaces of the pair of wing plate bottom layer mesh sheets 5, and connecting the pair of wing plate bottom layer mesh sheets 5 into a whole;
step A9, arranging a plurality of top plate frame vertical ribs 10 on the top plate bottom layer mesh sheet 6 at intervals;
step A10, welding a top plate top layer mesh sheet 7 on the top plate frame stud 10 above the top plate bottom layer mesh sheet 6, wherein the volume of the top plate top layer mesh sheet 7 covers the pair of wing plate bottom layer mesh sheets 5 and the top plate bottom layer mesh sheet 6 to form a mesh-shaped top plate 13.
In the technical scheme, the U-shaped reinforcing steel bars at the end part of the top plate, the reinforcing steel bars at the chamfer positions of the top plate and the web plate, the reinforcing steel bars at the chamfer positions of the bottom plate and the web plate and the conflict positions of the mesh sheets are inserted and bound in a manual mode, and finally, the pulling and hooking ribs are inserted and bound among the reinforcing steel bar mesh sheets to form a complete reinforcing steel bar part;
for the bottom layer mesh 1 of the bottom plate, main ribs in the closed hoop of the web plate need to be removed from the mesh plate, and in addition, the main ribs at the positions of the erection ribs are removed. In this embodiment, the spacing between the vertical ribs is 195mm, which is 13 times the spacing between the main ribs.
And (5) removing the main ribs at the positions of the vertical ribs 8 of the bottom plate frame for the bottom plate top layer mesh 2.
For the originally designed web plate closed stirrup, the original design web plate closed stirrup needs to be disassembled into a pair of C-shaped open stirrups, and two pairs of net sheets are formed with the main reinforcement, so that the part-production manufacturing of the web plate closed stirrup is realized. The longitudinal ribs of the mesh sheets at the inner side and the outer side of the web plate at the position overlapped with the mesh sheets of the bottom plate need to be removed, and the longitudinal ribs at the position overlapped with the mesh sheets at the top layer of the top plate also need to be removed.
And correspondingly removing main ribs at the positions of the web frame vertical ribs 9 and the top plate frame vertical ribs 10 for the wing plate bottom layer mesh 5 and the top plate bottom layer mesh 6.
For the top layer mesh 7 of the top plate, main ribs in the web plate closed hoop need to be removed.
According to the technical scheme, the steel bars are cut to length by a steel bar cutting machine according to the size of each divided net piece, then the cut steel bars are conveyed to a net welding machine to be welded into the net pieces, and the net pieces are bent into various shapes by a steel bar bending machine.
In another technical scheme, the bottom plate frame studs 8, the top plate frame studs 10 and the web frame studs 9 all comprise,
the pair of rod-shaped studs are oppositely arranged and are connected with each other at intervals through a plurality of rod-shaped transverse studs.
In another technical scheme, the ends of the pair of web outer side mesh sheets 3 far away from the bottom plate bottom mesh sheet 1 oppositely form a first extension part, and the ends of the pair of web inner side mesh sheets 4 far away from the bottom plate bottom mesh sheet 1 form a second extension part towards the mutually far sides;
the first extension part and the second extension part are buckled with each other, and a closed part is formed between the pair of web outer side net sheets 3 and the pair of web inner side net sheets 4 respectively.
In another technical scheme, the closing part for buckling the first extending part and the second extending part is hooped by a plurality of hoops.
In another technical scheme, the steps A1 to A9 are all formed by binding through a jig frame.
In the above technical scheme, the jig frame is: the tool suitable for the shape setting of the steel bar part comprises but is not limited to a fixing part and a bending part, wherein the fixing part is used for fixing the steel bar part and is matched with the bending part to bend the steel bar part into a prefabricated shape;
and sequentially finishing the assembly of the net sheets on the jig frame from bottom to top and from outside to inside, and binding the next installation net sheet and the previous installation net sheet at the intersection position of the reinforcing steel bars.
In another kind of technical scheme, roof frame grub bar 10 bottom plate frame grub bar 8 with web frame grub bar 9 all need be rejected when the installation with roof frame grub bar 10 bottom plate frame grub bar 8 with the main muscle of the net piece that the laminating of web frame grub bar 9 set up makes roof frame grub bar 10 bottom plate frame grub bar 8 with one of them of web frame grub bar 9 shaft-like grub bar acts as the main muscle of being rejected.
In another technical scheme, the method further comprises a manual binding process, wherein the binding process sequentially comprises that connecting members are arranged between the pair of reticular webs 12 and the reticular top plate 13 and the reticular bottom plate 11.
In conclusion, for a single concrete box girder reinforcement framework in the embodiment, the conventional manual binding mode is adopted, about 4 workers are needed to finish the steel bar fixed-length cutting, and about 15 workers are needed to finish the steel bar binding molding; the method provided by the invention needs about 1 person to finish the fixed-length cutting of the reinforcing steel bars, and needs about 5 persons to finish the assembling and forming of the reinforcing steel bars. In the aspect of labor cost, the manufacturing method of the steel bar part is only 32% of the traditional binding method, for the expense of special processing equipment for the steel bar net piece, if the number of box girders for amortization is increased, the expense of the equipment distributed on a single box girder can be further reduced
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (8)

1. A manufacturing method of a steel bar part for a segmental assembled concrete box girder is characterized in that the steel bar part is composed of a plurality of steel bar meshes, and the manufacturing method of the steel bar part comprises the following steps:
step S1, presetting the type and size of the reinforcing mesh according to the overall size of the reinforcing part;
step S2, welding the steel mesh sheets according to the type and the size of the steel mesh sheets preset in the step S1 to obtain a plurality of target steel mesh sheets;
step S3, assembling the plurality of target reinforcing mesh sheets in the step S3 to obtain the reinforcing bar part;
wherein the types of the reinforcing mesh comprise: the bottom plate bottom layer mesh, the bottom plate top layer mesh, the web outer side mesh, the web inner side mesh, the wing plate bottom layer mesh, the top plate bottom layer mesh and the top plate top layer mesh.
2. The method for manufacturing the reinforced parts of the segmental assembled concrete box girder according to the claim 1, wherein the step S3 of assembling a plurality of target reinforced net sheets comprises the following steps:
a1, paving a bottom mesh of a bottom plate to form a horizontal reinforcing steel bar mesh surface;
step A2, vertically arranging a pair of opposite web plate outer side net sheets at two ends of the upper surface of the steel bar net surface;
step A3, arranging a plurality of bottom plate frame vertical bars on the steel bar net surface in the step A1 at intervals;
step A4, laying a bottom plate top layer mesh surface with the same volume as the reinforcing steel bar mesh surface on the upper part of the reinforcing steel bar mesh surface positioned on the bottom plate frame vertical bars to form a mesh bottom plate;
step A5, web frame studs are respectively arranged on the opposite surfaces of a pair of web outer side meshes;
step A6, arranging a pair of web inner meshes with the same volume as the web outer meshes on the web frame studs on the opposite surfaces of the pair of web outer meshes respectively to form a pair of net-shaped webs;
a step a7 of disposing a horizontal web sheet on top of each of the pair of web sheets in the step a6, without contacting the web sheets;
step A8, arranging the top plate bottom layer mesh on the upper surfaces of the pair of wing plate bottom layer meshes, and connecting the pair of wing plate bottom layer meshes into a whole;
step A9, arranging a plurality of top plate frame vertical ribs on the bottom layer mesh of the top plate at intervals;
and A10, welding a top plate top layer mesh above the top plate bottom layer mesh on the top plate frame studs, wherein the volume of the top plate top layer mesh covers the pair of wing plate bottom layer mesh and the top plate bottom layer mesh to form a net-shaped top plate.
3. The method for manufacturing the reinforced bar component of the segmental assembled concrete box girder according to claim 2, wherein the bottom plate frame vertical bars, the top plate frame vertical bars and the web plate frame vertical bars all comprise,
the pair of rod-shaped studs are oppositely arranged and are connected with each other at intervals through a plurality of rod-shaped transverse studs.
4. The method for manufacturing the reinforced parts of the segmental assembled concrete box girder according to the claim 2, wherein the ends of the pair of web outer side mesh sheets far away from the bottom plate bottom mesh sheet are opposite to form a first extension part, and the ends of the pair of web inner side mesh sheets far away from the bottom plate bottom mesh sheet are opposite to form a second extension part towards the mutually far sides;
the first extending part and the second extending part are buckled with each other, and a closed part is formed between the pair of web outer side net sheets and the pair of web inner side net sheets respectively.
5. The method for manufacturing the reinforcement part of the segmental assembled concrete box girder according to claim 4, wherein the closed part for buckling the first extension part and the second extension part is further hooped by a plurality of hoops.
6. The method for manufacturing the reinforced parts of the segmental assembling concrete box girder according to the claim 2, wherein the steps A1 to A9 are all formed by binding through a jig frame.
7. The method for manufacturing the reinforced bar part of the segmental assembled concrete box girder according to claim 2 or 3, wherein when the top plate frame vertical bars, the bottom plate frame vertical bars and the web plate frame vertical bars are installed, main bars of a mesh sheet attached to the top plate frame vertical bars, the bottom plate frame vertical bars and the web plate frame vertical bars need to be removed, so that one of the rod-shaped vertical bars serves as the removed main bar.
8. The method for manufacturing the reinforced bar part of the segmental assembled concrete box girder according to the claim 2 or 3, which is characterized by further comprising a manual binding process, wherein the binding process sequentially comprises the step of arranging connecting members between the pair of reticular webs and the reticular top plate and the reticular bottom plate.
CN202010864298.6A 2020-08-25 2020-08-25 Manufacturing method of steel bar part for segmental assembling concrete box girder Pending CN112123564A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114919063A (en) * 2022-06-08 2022-08-19 中交第二航务工程局有限公司 Method for assembling core box type box girder steel reinforcement framework
CN114961274A (en) * 2022-06-08 2022-08-30 中交第二航务工程局有限公司 Method for assembling block-type box girder steel reinforcement framework

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Application publication date: 20201225