CN115476066B - Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder - Google Patents
Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder Download PDFInfo
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- CN115476066B CN115476066B CN202211221555.XA CN202211221555A CN115476066B CN 115476066 B CN115476066 B CN 115476066B CN 202211221555 A CN202211221555 A CN 202211221555A CN 115476066 B CN115476066 B CN 115476066B
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- bridge deck
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 65
- 238000010276 construction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
Abstract
The invention relates to a forward and reverse manufacturing process of an assembled and overlapped twin-type approach bridge steel box girder, which is characterized in that: comprises a lower bridge deck reverse construction process and an upper bridge deck forward construction process; the welding of the beam connecting top plate unit and the welding of the lower bridge deck box beam unit can be completed rapidly by adopting a reverse construction mode for the lower bridge deck box beam unit; the reversely manufactured lower bridge deck box girder unit and the connecting girder top plate unit are welded, so that the problem of expansion of deformation range caused by welding after turning over is avoided; in addition, the mounting of the overhanging unit is carried out by turning over after the welding of the main body part of the lower bridge deck is completed, and the molded line of the main body part of the lower bridge deck can be trimmed when the overhanging unit is mounted, so that the subsequent trimming time is shortened, and the efficiency is improved; through adopting the mode of just making with last bridge floor case roof beam unit, on the one hand can avoid the big bridge approach steel case roof beam of width to install the trouble problem of overhanging unit bridge floor standing up, on the other hand, go up bridge floor case roof beam unit and be convenient for the dress when just making and weld.
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 positive and negative manufacturing process of an assembled and stacked twin-type approach bridge steel box girder.
Background
In the assembled and overlapped twin 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 construction mode; however, as the bridge approach structure of the steel box girder of the lower bridge deck has smaller width, when the box girder is assembled and welded in a positive construction mode, the box girder is troublesome to assemble and the control effect of assembled molded lines is poor; therefore, a new manufacturing process for assembling and superposing the twin-type approach bridge steel box girder is needed to solve the problem of poor control effect of assembled molded lines.
Disclosure of Invention
The invention aims to solve the technical problem of providing a forward and reverse manufacturing process of an assembled superimposed twin type approach bridge steel box girder, which can solve the problem that the common assembled superimposed twin type approach bridge steel box structure adopts a positive construction mode to cause poor molded line control effect.
In order to solve the technical problems, the technical scheme of the invention is as follows: the positive and negative manufacturing process of the assembled and overlapped 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 forward construction process; the specific manufacturing process is as follows:
s1: the reverse construction process of the lower bridge deck comprises the following steps:
s11: roof unit positioning: the top plate units which are subjected to blanking and welded with stiffening plates are welded in sequence in the length direction,
s12: positioning a baffle unit: the blanking partition board units are vertically arranged along the extending direction of the top board unit, stiffening plates on the top board unit are welded, and the heights of the partition board units at two ends are lower than the heights of other partition boards between the partition board units at two ends;
s13: web unit positioning: setting a plurality of web units which are subjected to blanking and welded with stiffening plates vertically along the extending direction of the edges of the top plate units; a plurality of T rows are arranged on the web plate unit perpendicular to the stiffening plate direction; the stiffening plate of the inner wall of the web plate unit is welded with the side wall 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 is not welded with the top plate unit;
s14: positioning a bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with 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 a beam-connecting top plate unit: sequentially welding the girder connecting top plate units which are subjected to blanking and welded with stiffening plates in the length direction, and performing penetration welding between two sides of the girder connecting top plate units and sides of the top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on web plates on the inner side wall of the box girder unit along the extending direction of the box girder unit;
s17: t rows of connecting beams are positioned: welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units;
s18: sealing and supporting seat installation of the box girder unit: sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s19: and (3) mounting 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 overhanging unit;
s2: the primary construction process of the upper bridge deck comprises the following steps:
s21: building an upper bridge deck box girder unit: blanking a bottom plate unit of an upper bridge deck box girder unit, welding a stiffening plate on the surface, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; sequentially welding the bottom plate units which are vertical to the upper bridge deck in the extending direction of the bottom plate units after blanking the partition plate units; welding a stiffening plate after blanking the web plate unit, welding the bottom end of the web plate unit with the side edge of the bottom plate unit of the upper bridge deck box girder unit, and simultaneously welding the stiffening plate on the inner wall of the web plate unit with the baffle plate unit; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding a stiffening plate 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 beam-connected top plate unit and accessories: sequentially welding the girder connecting top plate units which finish blanking and are welded with stiffening plates in the length direction; the two sides of the roof unit of the connecting beam and the sides of the roof unit of the two groups of upper bridge deck box girder units are welded in a penetration way; sequentially welding connecting plates on web plates on the inner side wall of the upper bridge deck box girder unit along the extending direction of the box girder unit; welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units; sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s23: and (3) mounting the overhanging unit: welding the overhanging 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 overhanging unit.
Further, the welding shrinkage of 0.5 per mill is reserved in the length direction of the top plate unit, the web plate unit, the bottom plate unit and the continuous beam top plate unit, and the parts at the two ends are additionally provided with 20mm allowance blanking.
The invention has the advantages that:
1) In the invention, the lower bridge deck box girder unit is reversely manufactured, so that the assembly welding of the beam connecting top plate unit and the assembly welding of the lower bridge deck box girder unit can be completed rapidly; the reversely manufactured lower bridge deck box girder unit and the connecting girder top plate unit are welded, so that the problem of expansion of deformation range caused by welding after turning over is avoided; in addition, the mounting of the overhanging unit is carried out by turning over after the welding of the main body part of the lower bridge deck is completed, and the molded line of the main body part of the lower bridge deck can be trimmed when the overhanging unit is mounted, so that the subsequent trimming time is shortened, and the efficiency is improved;
2) According to the invention, the upper bridge deck box girder unit adopts a positive construction mode, so that the problem of trouble turning over of the bridge deck of the cantilever unit arranged on the bridge approach steel box girder with larger width can be avoided, and on the other hand, the upper bridge deck box girder unit is convenient to assemble and weld during positive construction.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a flow chart of a forward and reverse manufacturing process of an assembled and superimposed twin type approach bridge steel box girder.
Fig. 2 to 8 are diagrams showing reverse construction states of a lower bridge deck of the forward and reverse manufacturing process of the assembled superimposed twin type approach steel box girder.
Fig. 9 to 15 are front-to-back construction state diagrams of an upper bridge deck of the front-to-back construction process of an assembled superimposed twin approach steel box girder of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The front and back manufacturing process of the assembled and overlapped twin-type approach bridge steel box girder shown in the figure 1 comprises a lower bridge deck reverse manufacturing process and an upper bridge deck forward manufacturing process; the specific manufacturing process is as follows:
s1: the reverse construction process of the lower bridge deck comprises the following steps: as shown in fig. 2 to 8:
s11: roof unit positioning: the top plate units which are subjected to blanking and welded with stiffening plates are welded in sequence in the length direction,
s12: positioning a baffle unit: the blanking partition board units are vertically arranged along the extending direction of the top board unit, stiffening plates on the top board unit are welded, and the heights of the partition board units at two ends are lower than the heights of other partition boards between the partition board units at two ends;
s13: web unit positioning: setting a plurality of web units which are subjected to blanking and welded with stiffening plates vertically along the extending direction of the edges of the top plate units; a plurality of T rows are arranged on the web plate unit perpendicular to the stiffening plate direction; the stiffening plate of the inner wall of the web plate unit is welded with the side wall 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 is not welded with the top plate unit;
s14: positioning a bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with 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 a beam-connecting top plate unit: sequentially welding the girder connecting top plate units which are subjected to blanking and welded with stiffening plates in the length direction, and performing penetration welding between two sides of the girder connecting top plate units and sides of the top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on web plates on the inner side wall of the box girder unit along the extending direction of the box girder unit;
s17: t rows of connecting beams are positioned: welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units;
s18: sealing and supporting seat installation of the box girder unit: sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s19: and (3) mounting 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 overhanging unit;
s2: the primary construction process of the upper bridge deck comprises the following steps: as shown in fig. 9 to 15:
s21: building an upper bridge deck box girder unit: blanking a bottom plate unit of an upper bridge deck box girder unit, welding a stiffening plate on the surface, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; sequentially welding the bottom plate units which are vertical to the upper bridge deck in the extending direction of the bottom plate units after blanking the partition plate units; welding a stiffening plate after blanking the web plate unit, welding the bottom end of the web plate unit with the side edge of the bottom plate unit of the upper bridge deck box girder unit, and simultaneously welding the stiffening plate on the inner wall of the web plate unit with the baffle plate unit; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding a stiffening plate 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 beam-connected top plate unit and accessories: sequentially welding the girder connecting top plate units which finish blanking and are welded with stiffening plates in the length direction; the two sides of the roof unit of the connecting beam and the sides of the roof unit of the two groups of upper bridge deck box girder units are welded in a penetration way; sequentially welding connecting plates on web plates on the inner side wall of the upper bridge deck box girder unit along the extending direction of the box girder unit; welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units; sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s23: and (3) mounting the overhanging unit: welding the overhanging 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 overhanging unit.
The welding shrinkage of 0.5 per mill 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 the parts at the two ends are added with 20mm allowance blanking.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A forward and reverse manufacturing process for assembled and overlapped twin-type approach bridge steel box girders is characterized in that: comprises a lower bridge deck reverse construction process and an upper bridge deck forward construction process; the specific manufacturing process is as follows:
s1: the reverse construction process of the lower bridge deck comprises the following steps:
s11: roof unit positioning: the top plate units which are subjected to blanking and welded with stiffening plates are welded in sequence in the length direction,
s12: positioning a baffle unit: the blanking partition board units are vertically arranged along the extending direction of the top board unit, stiffening plates on the top board unit are welded, and the heights of the partition board units at two ends are lower than the heights of other partition boards between the partition board units at two ends;
s13: web unit positioning: setting a plurality of web units which are subjected to blanking and welded with stiffening plates vertically along the extending direction of the edges of the top plate units; a plurality of T rows are arranged on the web plate unit perpendicular to the stiffening plate direction; the stiffening plate of the inner wall of the web plate unit is welded with the side wall 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 is not welded with the top plate unit;
s14: positioning a bottom plate unit: sequentially welding the bottom plate units which are subjected to blanking and welded with 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 a beam-connecting top plate unit: sequentially welding the girder connecting top plate units which are subjected to blanking and welded with stiffening plates in the length direction, and performing penetration welding between two sides of the girder connecting top plate units and sides of the top plate units of the two groups of box girder units;
s16: positioning a connecting plate: sequentially welding connecting plates on web plates on the inner side wall of the box girder unit along the extending direction of the box girder unit;
s17: t rows of connecting beams are positioned: welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units;
s18: sealing and supporting seat installation of the box girder unit: sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s19: and (3) mounting 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 overhanging unit;
s2: the primary construction process of the upper bridge deck comprises the following steps:
s21: building an upper bridge deck box girder unit: blanking a bottom plate unit of an upper bridge deck box girder unit, welding a stiffening plate on the surface, and then sequentially welding and assembling the bottom plate unit on a jig frame along the length direction; sequentially welding the bottom plate units which are vertical to the upper bridge deck in the extending direction of the bottom plate units after blanking the partition plate units; welding a stiffening plate after blanking the web plate unit, welding the bottom end of the web plate unit with the side edge of the bottom plate unit of the upper bridge deck box girder unit, and simultaneously welding the stiffening plate on the inner wall of the web plate unit with the baffle plate unit; finally, blanking a top plate unit of the upper bridge deck box girder unit, welding a stiffening plate 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 beam-connected top plate unit and accessories: sequentially welding the girder connecting top plate units which finish blanking and are welded with stiffening plates in the length direction; the two sides of the roof unit of the connecting beam and the sides of the roof unit of the two groups of upper bridge deck box girder units are welded in a penetration way; sequentially welding connecting plates on web plates on the inner side wall of the upper bridge deck box girder unit along the extending direction of the box girder unit; welding T-row connecting beams between connecting plates on webs on the inner side walls of the two box beam units; sealing plates are welded at ports at two ends of the box girder unit, and supports are welded on a bottom plate unit of the box girder unit;
s23: and (3) mounting the overhanging unit: welding the overhanging 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 overhanging unit.
2. The process for manufacturing the assembled superimposed twin-type approach bridge steel box girder in the forward and reverse directions is characterized in that: the welding shrinkage of 0.5 per mill is reserved in the length direction of the top plate unit, the web plate unit, the bottom plate unit and the continuous beam top plate unit, and the parts at the two ends are respectively provided with 20mm allowance blanking.
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 |
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| 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 |
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| CN115476066A CN115476066A (en) | 2022-12-16 |
| CN115476066B true CN115476066B (en) | 2024-02-20 |
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| CN115476066A (en) | 2022-12-16 |
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