CN115476066A - Positive and negative manufacturing process of assembled and superposed twin-tire approach bridge steel box girder - Google Patents
Positive and negative manufacturing process of assembled and superposed twin-tire approach bridge steel box girder Download PDFInfo
- Publication number
- CN115476066A CN115476066A CN202211221555.XA CN202211221555A CN115476066A CN 115476066 A CN115476066 A CN 115476066A CN 202211221555 A CN202211221555 A CN 202211221555A CN 115476066 A CN115476066 A CN 115476066A
- Authority
- CN
- China
- Prior art keywords
- unit
- box girder
- welding
- units
- welded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a forward and reverse manufacturing process of an assembled and superposed twin approach bridge steel box girder, which is characterized by comprising the following steps of: comprises a lower bridge deck reverse construction process and an upper bridge deck positive construction process; the welding of the top plate unit of the connecting beam and the welding of the box girder unit of the lower bridge deck can be rapidly finished by reversely manufacturing the box girder unit of the lower bridge deck; the problem of deformation range increase caused by welding after turning over is solved by welding the inverted lower bridge deck box girder unit and the connecting girder top plate unit; in addition, the cantilever unit is installed by turning over after the sub-assembly welding of the lower bridge deck main body is completed, and the molded line of the lower bridge deck main body can be trimmed when the cantilever unit is installed, so that the subsequent trimming time is reduced, and the efficiency is improved; through adopting the mode of just making with last bridge floor box girder unit, can avoid on the one hand the great steel box girder of approach bridge of width to install and encorbelment the trouble problem of unit bridge floor and stand up, on the other hand, the dress of going up bridge floor box girder unit is convenient for weld when just making.
Description
Technical Field
The invention relates to the technical field of processing of assembled and stacked twin type approach bridge steel box girders, in particular to a forward and reverse manufacturing process of the assembled and stacked twin type approach bridge steel box girders.
Background
In the assembled and superposed twin-type steel box bridge, the upper layer is a highway bridge, and the lower layer is a railway bridge; the general upper bridge deck steel box girder and the lower bridge deck steel box girder are assembled and welded in a positive mode; however, as the width of the approach structure of the steel box girder on the lower bridge deck is smaller, when the assembly welding is carried out by adopting a positive manufacturing mode, the assembly of the box girder is troublesome, and the control effect of the assembly molded line is poor; therefore, a new manufacturing process of the assembled and superposed twin-tire approach bridge steel box girder is needed to solve the problem of poor control effect of the assembled molded lines.
Disclosure of Invention
The invention aims to solve the technical problem of providing a positive and negative manufacturing process of an assembled and stacked twin-tire approach bridge steel box girder, and the problem of poor molded line control effect caused by the fact that the steel box structures of a common assembled and stacked twin-tire approach bridge are manufactured positively can be solved.
In order to solve the technical problems, the technical scheme of the invention is as follows: the forward and reverse manufacturing process of the assembled and superposed twin-type approach bridge steel box girder has the innovation points that: comprises a lower bridge deck reverse construction process and an upper bridge deck positive construction process; the specific manufacturing process comprises the following steps:
s1: the reverse construction process of the lower bridge deck comprises the following steps:
s11: positioning the top plate unit: sequentially welding the top plate units which are subjected to blanking and welded with the stiffening plates in the length direction,
s12: positioning a partition plate unit: vertically arranging the partition board units after blanking along the extension direction of the top board units, welding stiffening plates on the top board units, and enabling the heights of the partition board units at the two ends to be lower than the heights of the rest partition boards between the partition board units at the two ends;
s13: web unit positioning: vertically arranging a plurality of web plate units which are subjected to blanking and welded with stiffening plates along the extending direction of the edges of the top plate units; a plurality of T rows are arranged on the web plate unit and are perpendicular to the direction of the stiffening plate; the stiffening plates on the inner wall of the web plate unit are welded with the side walls of the partition plate unit, and the bottom end of the web plate unit is welded with the edge of the top plate unit; the T row and the top plate unit are not welded;
s14: positioning the bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with the stiffening plates in the length direction; the top plate unit, the web plate unit and the bottom plate unit are welded to form a box girder unit;
s15: positioning the top plate unit of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction, and carrying out fusion penetration welding between two side edges of the connecting beam top plate units and side edges of top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on the web plate unit on the inner side wall of the box girder unit along the extension direction of the box girder unit;
s17: positioning the T-row connecting beams: t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units;
s18: sealing the box girder unit and installing a support: sealing plates are welded at the ports of the two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s19: installation of the cantilever unit: the box girder unit is turned over on the jig frame, and the overhanging unit is welded on the side edge of the box girder unit along the extending direction of the box girder unit; the top plate unit on the box girder unit is flush with the upper surface of the cantilever unit;
s2: the upper bridge deck erecting process comprises the following steps:
s21: constructing an upper bridge deck box girder unit: welding stiffening plates on the surface of a bottom plate unit of an upper bridge deck box girder unit, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; after blanking, sequentially welding the bottom plate units which are perpendicular to the upper bridge deck in the extending direction of the bottom plate units; after blanking, welding stiffening plates, welding the bottom ends of the web plate units with the side edges of the bottom plate units of the upper bridge deck box girder units, and welding the stiffening plates on the inner walls of the web plate units with the partition plate units; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding stiffening plates on the surface, sequentially welding and assembling the top plate unit along the length direction, and finally integrally welding the welded and assembled top plate unit on the top end of the web plate unit;
s22: positioning of the top plate unit and the accessories of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction; two side edges of the top plate unit of the connecting beam are welded with the side edges of the top plate units of the two groups of upper bridge deck box girder units in a penetration manner; sequentially welding connecting plates on an inner side wall web plate unit of the upper bridge deck box girder unit along the extension direction of the box girder unit; t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units; sealing plates are welded at the ports of the two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s23: installation of the cantilever unit: welding the cantilever unit on the side edge of the upper bridge deck box girder unit along the extending direction of the upper bridge deck box girder unit; the top plate unit on the upper bridge deck box girder unit is flush with the upper surface of the cantilever unit.
Furthermore, 0.5 per mill of welding shrinkage is reserved in the length direction of the top plate unit, the web plate unit, the bottom plate unit and the connecting beam top plate unit, and 20mm of allowance blanking is added to the parts at the two ends.
The invention has the advantages that:
1) According to the invention, the welding of the top plate unit of the connecting beam and the welding of the box girder unit of the lower bridge deck can be rapidly completed by adopting a reverse construction mode for the box girder unit of the lower bridge deck; the problem that the deformation range is enlarged due to welding after turning over is solved by welding the reversely-built lower bridge deck box girder unit and the connecting girder top plate unit; in addition, the cantilever unit is installed by turning over after the sub-assembly welding of the lower bridge deck main body is completed, and the molded line of the lower bridge deck main body can be trimmed when the cantilever unit is installed, so that the subsequent trimming time is reduced, and the efficiency is improved;
2) In the invention, the upper bridge deck box girder unit is manufactured positively, so that the problem of trouble in turning over of the bridge deck when the cantilever unit is arranged on the approach bridge steel box girder with larger width can be avoided, and the upper bridge deck box girder unit is convenient to assemble and weld during the manufacturing positively.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a process flow diagram for forward and reverse manufacturing of an assembled and stacked twin-tire approach bridge steel box girder.
Fig. 2 to 8 are lower deck reverse building state diagrams of the assembling and stacking twin-tire approach bridge steel box girder positive and negative manufacturing process of the invention.
Fig. 9 to 15 are upper deck erecting state diagrams of the assembling and stacking twin-tire approach bridge steel box girder positive and negative manufacturing process of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The forward and reverse manufacturing process of the assembled and superposed twin-tire type approach bridge steel box girder shown in figure 1 comprises a lower bridge deck reverse manufacturing process and an upper bridge deck forward manufacturing process; the specific manufacturing process comprises the following steps:
s1: the reverse construction process of the lower bridge deck comprises the following steps: as shown in fig. 2 to 8:
s11: top plate unit positioning: sequentially welding the top plate units which are subjected to blanking and welded with the stiffening plates in the length direction,
s12: positioning a partition plate unit: vertically arranging the partition board units after blanking along the extension direction of the top board units, welding stiffening plates on the top board units, and enabling the heights of the partition board units at the two ends to be lower than the heights of the rest partition boards between the partition board units at the two ends;
s13: web unit positioning: vertically arranging a plurality of web plate units which are subjected to blanking and welded with stiffening plates along the extending direction of the edge of the top plate unit; a plurality of T rows are arranged on the web plate unit and are perpendicular to the direction of the stiffening plate; the stiffening plates on the inner wall of the web plate unit are welded with the side walls of the partition plate unit, and the bottom end of the web plate unit is welded with the edge of the top plate unit; the T row and the top plate unit are not welded;
s14: positioning the bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with the stiffening plates in the length direction; the top plate unit, the web plate unit and the bottom plate unit are welded to form a box girder unit;
s15: positioning the top plate unit of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction, and performing fusion welding between two side edges of the connecting beam top plate units and side edges of top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on the inner side wall web plate unit of the box girder unit along the extension direction of the box girder unit;
s17: positioning the T-row connecting beams: t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units;
s18: sealing the box girder unit and mounting a support: sealing plates are welded at the ports of the two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s19: installation of the cantilever unit: the box girder unit is turned over on the jig frame, and the cantilever unit is welded on the side edge of the box girder unit along the extending direction of the box girder unit; the top plate unit on the box girder unit is flush with the upper surface of the cantilever unit;
s2: the upper bridge deck erecting process comprises the following steps: as shown in fig. 9 to 15:
s21: constructing an upper bridge deck box girder unit: welding stiffening plates on the surface of a bottom plate unit of an upper bridge deck box girder unit, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; after blanking, sequentially welding the bottom plate units which are perpendicular to the upper bridge deck in the extending direction of the bottom plate units; after blanking, welding stiffening plates, welding the bottom ends of the web plate units with the side edges of the bottom plate units of the upper bridge deck box girder units, and welding the stiffening plates on the inner walls of the web plate units with the partition plate units; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding stiffening plates on the surface, sequentially welding and assembling the top plate unit along the length direction, and finally integrally welding the welded and assembled top plate unit on the top end of the web plate unit;
s22: positioning of the top plate unit and the accessories of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction; two side edges of the top plate unit of the connecting beam are welded with the side edges of the top plate units of the two groups of upper bridge deck box girder units in a penetration manner; sequentially welding connecting plates on an inner side wall web plate unit of the upper bridge deck box girder unit along the extension direction of the box girder unit; t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units; sealing plates are welded at the port parts of two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s23: installation of the overhanging unit: welding the cantilever unit on the side edge of the upper bridge deck box girder unit along the extending direction of the upper bridge deck box girder unit; and the top plate unit on the upper bridge deck box girder unit is flush with the upper surface of the cantilever unit.
0.5 thousandth welding shrinkage is reserved in the length direction of the top plate unit, the web plate unit, the bottom plate unit and the connecting beam top plate unit, and 20mm allowance blanking is added to the parts at the two ends.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The positive and negative manufacturing process of the assembled and superposed twin-type approach bridge steel box girder is characterized in that: comprises a lower bridge deck reverse construction process and an upper bridge deck positive construction process; the specific manufacturing process comprises the following steps:
s1: the reverse construction process of the lower bridge deck comprises the following steps:
s11: positioning the top plate unit: the top plate units which are blanked and welded with the stiffening plates are sequentially welded in the length direction,
s12: positioning a partition plate unit: vertically arranging the partition board units after blanking along the extension direction of the top board units, welding stiffening plates on the top board units, and enabling the heights of the partition board units at the two ends to be lower than the heights of the rest partition boards between the partition board units at the two ends;
s13: web unit positioning: vertically arranging a plurality of web plate units which are subjected to blanking and welded with stiffening plates along the extending direction of the edges of the top plate units; a plurality of T rows are arranged on the web plate unit and are perpendicular to the direction of the stiffening plate; the stiffening plates on the inner wall of the web plate unit are welded with the side walls of the partition plate unit, and the bottom end of the web plate unit is welded with the edge of the top plate unit; the T row and the top plate unit are not welded;
s14: positioning the bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with the stiffening plates in the length direction; the top plate unit, the web plate unit and the bottom plate unit are welded to form a box girder unit;
s15: positioning the top plate unit of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction, and carrying out fusion penetration welding between two side edges of the connecting beam top plate units and side edges of top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on the inner side wall web plate unit of the box girder unit along the extension direction of the box girder unit;
s17: positioning the T-row connecting beams: t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units;
s18: sealing the box girder unit and mounting a support: sealing plates are welded at the port parts of two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s19: installation of the overhanging unit: the box girder unit is turned over on the jig frame, and the overhanging unit is welded on the side edge of the box girder unit along the extending direction of the box girder unit; the top plate unit on the box girder unit is flush with the upper surface of the cantilever unit;
s2: the upper bridge deck erecting process comprises the following steps:
s21: constructing an upper bridge deck box girder unit: welding stiffening plates on the surface of a bottom plate unit of an upper bridge deck box girder unit, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; after blanking, sequentially welding bottom plate units which are vertical to the upper bridge deck in the extending direction of the bottom plate units; after blanking, welding stiffening plates, welding the bottom ends of the web plate units with the side edges of the bottom plate units of the upper bridge deck box girder units, and welding the stiffening plates on the inner walls of the web plate units with the partition plate units; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding stiffening plates on the surface, sequentially welding and assembling the top plate unit along the length direction, and finally integrally welding the welded and assembled top plate unit on the top end of the web plate unit;
s22: positioning of the top plate unit and the accessories of the connecting beam: sequentially welding the connecting beam top plate units which are subjected to blanking and welded with the stiffening plates in the length direction; two side edges of the top plate unit of the connecting beam are welded with the side edges of the top plate units of the two groups of upper bridge deck box girder units in a penetration manner; sequentially welding connecting plates on an inner side wall web plate unit of the upper bridge deck box girder unit along the extension direction of the box girder unit; t-row connecting beams are welded between connecting plates on inner side wall webs of the two box girder units; sealing plates are welded at the port parts of two ends of the box girder unit, and a support is welded on the bottom plate unit of the box girder unit;
s23: installation of the overhanging unit: welding the cantilever unit on the side edge of the upper bridge deck box girder unit along the extending direction of the upper bridge deck box girder unit; the top plate unit on the upper bridge deck box girder unit is flush with the upper surface of the cantilever unit.
2. The forward and reverse manufacturing process of the assembled and stacked twin approach bridge steel box girder according to claim 1, is characterized in that: 0.5 thousandth welding shrinkage is reserved in the length direction of the top plate unit, the web plate unit, the bottom plate unit and the connecting beam top plate unit, and 20mm allowance blanking is added to the parts located at the two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221555.XA CN115476066B (en) | 2022-10-08 | 2022-10-08 | Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221555.XA CN115476066B (en) | 2022-10-08 | 2022-10-08 | Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115476066A true CN115476066A (en) | 2022-12-16 |
| CN115476066B CN115476066B (en) | 2024-02-20 |
Family
ID=84393942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211221555.XA Active CN115476066B (en) | 2022-10-08 | 2022-10-08 | Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115476066B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967721A (en) * | 2023-08-23 | 2023-10-31 | 江苏京沪重工有限公司 | A processing and manufacturing technology for trapezoidal bent torsion arch bridge box beams |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005061064A (en) * | 2003-08-12 | 2005-03-10 | Oriental Construction Co Ltd | Curved road surface corresponding type box girder, and form device and manufacturing method for the same |
| CN101487232A (en) * | 2009-01-05 | 2009-07-22 | 广州市市政集团有限公司 | Steel box girder assembling construction method |
| CN102912721A (en) * | 2012-11-21 | 2013-02-06 | 中铁第四勘察设计院集团有限公司 | Double-outrigger type cable beam anchoring structure of bridge steel box girder |
| CN103523168A (en) * | 2013-10-10 | 2014-01-22 | 福建省马尾造船股份有限公司 | Cross structure area segmentation manufacturing process of CSS platform and special-purpose inclined cutting jig frame |
| CN104532730A (en) * | 2014-12-17 | 2015-04-22 | 中交公路规划设计院有限公司 | Full-breadth variable-cross-section steel box girder and construction method thereof |
| CN113510431A (en) * | 2021-03-08 | 2021-10-19 | 中船第九设计研究院工程有限公司 | Adjustable jig frame device for machining bidirectional slope-fold steel bridge deck |
| CN114164770A (en) * | 2022-02-10 | 2022-03-11 | 中铁山桥(南通)有限公司 | Assembling method for forward and reverse combination of ultra-wide framing steel box girder |
| CN114799621A (en) * | 2022-02-22 | 2022-07-29 | 中铁宝桥（扬州）有限公司 | Large bridge steel box girder block assembling and welding process |
| CN115008053A (en) * | 2022-06-07 | 2022-09-06 | 中国五冶集团有限公司 | Machining and manufacturing method for curved variable-section steel box girder |
| CN115070245A (en) * | 2022-06-23 | 2022-09-20 | 中铁山桥集团有限公司 | Manufacturing method of UHPC steel box composite beam |
-
2022
- 2022-10-08 CN CN202211221555.XA patent/CN115476066B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005061064A (en) * | 2003-08-12 | 2005-03-10 | Oriental Construction Co Ltd | Curved road surface corresponding type box girder, and form device and manufacturing method for the same |
| CN101487232A (en) * | 2009-01-05 | 2009-07-22 | 广州市市政集团有限公司 | Steel box girder assembling construction method |
| CN102912721A (en) * | 2012-11-21 | 2013-02-06 | 中铁第四勘察设计院集团有限公司 | Double-outrigger type cable beam anchoring structure of bridge steel box girder |
| CN103523168A (en) * | 2013-10-10 | 2014-01-22 | 福建省马尾造船股份有限公司 | Cross structure area segmentation manufacturing process of CSS platform and special-purpose inclined cutting jig frame |
| CN104532730A (en) * | 2014-12-17 | 2015-04-22 | 中交公路规划设计院有限公司 | Full-breadth variable-cross-section steel box girder and construction method thereof |
| CN113510431A (en) * | 2021-03-08 | 2021-10-19 | 中船第九设计研究院工程有限公司 | Adjustable jig frame device for machining bidirectional slope-fold steel bridge deck |
| CN114164770A (en) * | 2022-02-10 | 2022-03-11 | 中铁山桥(南通)有限公司 | Assembling method for forward and reverse combination of ultra-wide framing steel box girder |
| CN114799621A (en) * | 2022-02-22 | 2022-07-29 | 中铁宝桥（扬州）有限公司 | Large bridge steel box girder block assembling and welding process |
| CN115008053A (en) * | 2022-06-07 | 2022-09-06 | 中国五冶集团有限公司 | Machining and manufacturing method for curved variable-section steel box girder |
| CN115070245A (en) * | 2022-06-23 | 2022-09-20 | 中铁山桥集团有限公司 | Manufacturing method of UHPC steel box composite beam |
Non-Patent Citations (1)
| Title |
|---|
| 熊伍能;: "飞龙岛大桥钢箱梁制造施工技术", 企业导报, no. 12 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967721A (en) * | 2023-08-23 | 2023-10-31 | 江苏京沪重工有限公司 | A processing and manufacturing technology for trapezoidal bent torsion arch bridge box beams |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115476066B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109208486B (en) | Embedding and repairing segmented manufacturing process between steel bridge roof plates | |
| CN112027020B (en) | Three-step ladder type sectional construction method | |
| CN115476066A (en) | Positive and negative manufacturing process of assembled and superposed twin-tire approach bridge steel box girder | |
| CN118958588A (en) | Composite beam and connection method thereof | |
| CN112663824A (en) | Assembled spliced corrugated steel plate concrete combined shear wall and manufacturing method thereof | |
| CN216838920U (en) | Single-box multi-chamber steel box girder structure | |
| CN115610614A (en) | Step type segmented construction precision control method for container ship | |
| CN115126319A (en) | Prefabricated assembled plate combined rectangular pool and manufacturing and mounting method | |
| CN219508842U (en) | Steel module building connection node capable of being installed rapidly | |
| CN115070245A (en) | Manufacturing method of UHPC steel box composite beam | |
| CN211774515U (en) | Prefabricated building unit, assembly type building and assembly type building with roof | |
| CN1255178A (en) | Prefabricated roof panels and their load-bearing beams | |
| CN109941868B (en) | Bearing column and elevator frame | |
| KR102206845B1 (en) | Structure and method for jointing two unit module of modular building | |
| CN115262364A (en) | N-shaped decorative steel box on bridge tower and assembling process thereof | |
| JPS5828005Y2 (en) | Prefabricated cross girder bridge | |
| CN119952324A (en) | A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam | |
| CN115570333B (en) | Stable support type triangular truss machining process | |
| KR20130065667A (en) | Composite deck plate integrated with a bar truss and method for manufacturing same | |
| KR102828336B1 (en) | Beam formwork with modular rebar and method of fabrication thereof | |
| KR20090068525A (en) | Bridge structure | |
| CN218059871U (en) | Durability assembled bridge construction | |
| CN217759483U (en) | Assembled floor panel | |
| CN215436630U (en) | Roof beam and roof assembly of vehicle | |
| CN118895865A (en) | High-efficiency aluminum alloy formwork system without C groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |