CN112222775A - Manufacturing method of flange plate of end steel shell structure - Google Patents
Manufacturing method of flange plate of end steel shell structure Download PDFInfo
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- CN112222775A CN112222775A CN202011043497.7A CN202011043497A CN112222775A CN 112222775 A CN112222775 A CN 112222775A CN 202011043497 A CN202011043497 A CN 202011043497A CN 112222775 A CN112222775 A CN 112222775A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims description 62
- 238000005553 drilling Methods 0.000 claims description 40
- 210000001503 joint Anatomy 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 20
- 238000007789 sealing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012545 processing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000007723 die pressing method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000000638 solvent extraction Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000008149 soap solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
Abstract
The invention relates to the technical field of immersed tube tunnels, and discloses a method for manufacturing a flange plate with an end steel shell structure.
Description
Technical Field
The invention relates to the technical field of immersed tube tunnels, in particular to a manufacturing method of a flange plate of an end steel shell structure.
Background
After the steel shell immersed tube underwater tunnel is immersed underwater, a joint between two immersed tubes forms a double-layer waterproof barrier by a GINA rubber waterstop and an OMEGA waterstop, the OMEGA waterstop is waterproof on a second layer, and is arranged on the flange of the immersed tube joint through an embedded part, a pressing plate and a fastening part, and forms a 650 mm-600 mm closed space with an end plate, a stiffening rib and a pipe joint end part outermost side diaphragm plate (end sealing plate) according to the GINA waterstop, and the two ends of the pipe joint are distributed in an annular shape. The whole ring of flange plates are densely distributed with embedded parts, and the installation precision of the embedded parts determines whether the pressing plates can be installed smoothly and the watertight quality of the waterstop installation.
The end steel shell structure of the immersed tube tunnel designed and constructed in the past is independent relative to the immersed tube main body structure no matter the immersed tube tunnel is a steel shell immersed tube or a concrete immersed tube tunnel, and the end steel shell structure can be separated from the immersed tube main body structure and independently designed, planned, manufactured and installed in blocks. The flange plate of the immersed tube end steel shell structure is fused with the main structure of the steel shell, and the flange plate and the main structure of the steel shell are required to be manufactured and installed in blocks synchronously along with the main structure, and the installation of relevant embedded parts is required to be completed in the primary stage of construction. According to the conventional method, all drilling processing is completed after cutting and blanking of the flange plate, an embedded part is installed, and the flange plate unit is installed in the manufacturing stage of the steel shell block. The conventional method is difficult to ensure the installation accuracy of the embedded parts, and is influenced by the steel shell folding assembly accuracy and welding shrinkage, and the installation accuracy of the embedded parts at the steel shell folding seams is poor.
Disclosure of Invention
The invention aims to provide a manufacturing method of a flange plate of an end steel shell structure, which can avoid the influence of steel shell folding assembly precision and welding shrinkage and improve the installation precision of an embedded part.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a manufacturing method of a flange plate of an end steel shell structure, wherein the flange plate is of an annular structure and comprises a first small section and a second small section, the first small section and the second small section are welded and connected to form a small section folding seam, and the first small section and the second small section both comprise: the device comprises a corner plate component and two straight plate components, wherein the two straight plate components are respectively connected to two ends of the corner plate component in a welding mode and form a block body folding seam; the manufacturing method of the flange plate of the end steel shell structure comprises the following steps:
s1, preparing each plate unit of the flange plate;
s2, drilling holes in the main body of each plate unit, drilling holes and installing embedded parts at one end, close to the butt joint, of the plate unit on one side of the butt joint, drilling holes and installing embedded parts at one end, close to the block folding joint, of the plate unit on one side of the block folding joint, and drilling holes and installing embedded parts at one end, close to the minor joint folding joint, of the plate unit on one side of the minor joint folding joint;
s3, mounting each plate unit of the flange plate on the steel shell main body;
s4, welding and connecting the plate units of the corner plate assembly, drilling a hole at one end, close to the butt joint, of the plate unit at the other side of the butt joint, and installing an embedded part;
s5, welding and connecting the straight plate assembly and the corner plate assembly, drilling a hole at one end, close to the block folding seam, of the plate unit on the other side of each block folding seam after welding, and installing an embedded part;
and S6, welding the first small section and the second small section, drilling a hole at one end, close to the small section folding seam, of the plate unit at the other side of the small section folding seam after welding, and installing an embedded part.
As a preferable scheme of the manufacturing method of the flange plate of the end steel shell structure, the corner plate assembly includes a first corner piece and a second corner piece, the first corner piece and the second corner piece are connected through a first connecting plate, the first corner piece is connected with one of the straight plate assemblies through a second connecting plate, the second corner piece is connected with the other straight plate assembly through a third connecting plate, and the first corner piece, the second corner piece, the first connecting plate, the second connecting plate and the third connecting plate are all plate units of the corner plate assembly.
As a preferable embodiment of the method for manufacturing the flange plate of the end steel shell structure, step S1 includes the following steps:
blanking and cutting the flange plate unit plate to form a flange plate piece;
and cold-bending and processing the flange plate pieces of the first corner piece and the second corner piece.
As a preferable mode of the method for manufacturing the flange plate of the end steel shell structure, in step S2, a hole is drilled in the plate unit by a die press tool.
As a preferable embodiment of the manufacturing method of the flange plate of the end steel shell structure, in step S2, the embedded parts are aligned with the axes of the holes by bolt tooling, and then the embedded parts are welded to the plate unit.
As a preferable embodiment of the manufacturing method of the flange plate of the end steel shell structure, in the step S2, after the embedded part is welded, a welding and sealing test is performed.
As a preferable mode of the method for manufacturing the flange plate of the end steel shell structure, in step S5, the alignment of the plate units on both sides of the block folding seam is corrected by positioning each plate unit by the steel shell main body.
As a preferable mode of the method for manufacturing a flange plate of an end-hat structure described above, in step S4, a hole of the plate unit on the other side of the butt seam near one end of the butt seam is positioned through the hole of the end of the plate unit on the one side of the butt seam after welding;
in the step S5, positioning a hole of one end of the plate unit close to the block folding seam on the other side of the block folding seam through a hole of the plate unit on one side of the block folding seam after welding;
in the step S6, a hole of one end of the plate unit on the other side of the folding seam close to the minor-segment folding seam is positioned by a hole of the plate unit on one side of the minor-segment folding seam after welding.
As a preferable scheme of the manufacturing method of the flange plate of the end steel shell structure, the butt joint seam, the block body folding seam and the minor joint folding seam are located in the middle of the pressing plate.
As a preferable scheme of the manufacturing method of the flange plate of the end steel shell structure, the straight plate assembly comprises two plate units, the two plate units of the straight plate assembly are both straight plates, and two adjacent straight plates are welded and connected.
The invention has the beneficial effects that:
according to the manufacturing method of the flange plate with the end steel shell structure, provided by the invention, the flange plate is reasonably prepared in a partitioning manner, the main body of each plate unit is drilled and provided with the embedded part, the end parts of the plate units on one side of the joint, the block body folding joint and the minor joint folding joint are drilled and provided with the embedded part, and after welding, the end parts of the plate units on the other side of the joint, the block body folding joint and the minor joint folding joint are drilled and provided with the embedded part, so that the mounting precision of the embedded part caused by welding or assembling can be avoided, most of the embedded parts can be mounted in the plate unit manufacturing stage, the follow-up high-altitude operation is reduced, and the method has the advantages of high working efficiency and guaranteed construction quality.
Drawings
FIG. 1 is a schematic block diagram of a tube segment end flange plate provided in accordance with the present invention;
FIG. 2 is a cross-sectional view taken along line a-a of FIG. 1;
FIG. 3 is a schematic diagram of the construction of a pipe coupling provided by the present invention;
FIG. 4 is a schematic structural view of a machining inspection of a first corner fitting provided by the present invention;
FIG. 5 is a schematic structural view of a die assembly provided in the present invention;
FIG. 6 is a schematic structural diagram of the positioning of the press mold tooling for drilling the flange plate according to the present invention;
FIG. 7 is a schematic structural view of a bolt tooling provided by the present invention;
FIG. 8 is a schematic structural diagram of a bolt tooling installation embedded part provided by the invention;
FIG. 9 is a schematic structural view of a flange plate according to the present invention illustrating a weld seal inspection using a seal test fixture;
FIG. 10 is a schematic structural diagram of a flange plate provided with a long channel steel;
fig. 11 is a schematic structural view illustrating the panel unit according to the present invention mounted on the steel shell body;
FIG. 12 is a schematic structural view of a counter bore hole after butt seam welding provided by the present invention;
FIG. 13 is an enlarged partial schematic view of node A of FIG. 1;
FIG. 14 is an enlarged partial schematic view of the node B of FIG. 1;
FIG. 15 is an enlarged partial schematic view of node C of FIG. 1;
FIG. 16 is an enlarged partial schematic view of node D of FIG. 1;
FIG. 17 is an enlarged partial schematic view of node E of FIG. 1;
FIG. 18 is an enlarged partial schematic view of node F of FIG. 1;
FIG. 19 is an enlarged partial schematic view of node G of FIG. 1;
FIG. 20 is an enlarged partial schematic view of node H of FIG. 1;
FIG. 21 is an enlarged partial schematic view of node J of FIG. 1;
fig. 22 is a partially enlarged schematic view of the node K in fig. 1.
In the figure:
11. a roof block; 12. a sidewall block; 13. a floor block; 14. a middle wall block body; 15. an end sealing plate;
2. a flange plate; 3. a stiffening rib; 4. an end panel; 5. OMEGA water stops; 6. bolt tooling; 7. a close test tool; 8. long channel steel;
21. a first straight plate; 22. a second straight plate; 23. a second connecting plate; 24. a first corner piece; 25. a first connecting plate; 26. a second corner piece; 27. a third connecting plate; 28. a third straight plate; 29. a fourth straight plate;
20. embedding parts; 51. pressing a plate; 52. a fastener; 53. die pressing tooling; 71. a seal ring; 72. a negative pressure valve; 73. a pressure gauge;
101. welding a seam; 102. block body folding seams; 103. a first minor segment closure seam; 104. a second minor joint closure seam; 105. butt-joint seam;
202. the position of the weld.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
After the steel-shell immersed tube underwater tunnel is immersed underwater, the joint between two immersed tubes is formed into double-layer water-proof barrier by GINA rubber waterstop and OMEGA waterstop, the OMEGA waterstop is second layer water-proof, and is mounted on the flange of immersed tube joint by means of embedded part, pressing plate and fastening piece, and is formed into closed space with end plate, stiffening rib and transverse partition plate (end sealing plate) at outmost side of tube joint end portion according to GINA waterstop, and two ends of tube joint are distributed in ring form. The embedded parts are densely distributed on the whole ring of the flange plate, and the installation precision of the embedded parts on the flange plate determines whether the pressing plate can be installed smoothly and the watertight quality of the waterstop installation. In the prior art, after cutting and blanking, the flange plate completes all drilling and installation of the embedded parts, and is affected by the folding assembly precision and welding shrinkage of the flange plate, so that the installation precision of the embedded parts is poor, and further the sealing effect of the OMEGA water stop is poor, and in order to solve the problem, as shown in fig. 1-3, the embodiment provides a manufacturing method of the flange plate with an end steel shell structure, which is used for manufacturing the flange plate, and comprises the following steps:
s1, preparing each plate unit of the flange plate 2.
And partitioning the flange plate 2, wherein the partitioning method is divided according to the functional characteristics of the steel shell main body, the end steel shell structure and the flange plate 2.
Specifically, as shown in fig. 1, the steel shell main body is divided into two semicircular sections at the left and right in the cross section direction, each semicircular section is divided into 4 blocks, namely a top plate block 11, a side wall block 12, a bottom plate block 13 and a middle wall block 14, and the end steel shell structures are annularly distributed on the top plate block 11, the side wall block 12 and the bottom plate block 13.
As shown in fig. 3, the end steel shell structure comprises a flange plate 2, an end plate 4 and a stiffening rib 3, the flange plate 2 is a horizontal plate of the end steel shell structure, and is welded with the end sealing plate 15 and the stiffening rib 3 of the end steel shell structure, and an embedded part 20 of the OMEGA water stop 5 is installed on the inner side of the flange plate 2 close to the end steel shell structure. The OMEGA water stop 5 is attached to the flange plate 2 by a pressure plate 51, fasteners 52 and embedment 20 and is located at the joint of the two pipe sections.
Specifically, the flange plate 2 is a ring-shaped structure, the flange plate 2 includes a first section and a second section, the first section and the second section are welded and connected to form a section folding seam, and the first section and the second section both include: the block folding joint comprises a corner plate component and two straight plate components, wherein the two straight plate components are respectively connected to two ends of the corner plate component in a welding mode and form a block folding joint 102, the straight plate components and the corner plate component respectively comprise at least two plate units, and the plate units of the corner plate component are connected in a welding mode and form a butt joint 105.
As shown in fig. 1, the side wall block 12 is C-shaped, and correspondingly, the corner plate assembly includes a first corner member 24 and a second corner member 26, the first corner member 24 and the second corner member 26 are connected by a first connecting plate 25, the first corner member 24 is connected to the top straight plate assembly by a second connecting plate 23, and the second corner member 26 is connected to the bottom straight plate assembly by a third connecting plate 27. The first corner piece 24, the second corner piece 26, the first connecting plate 25, the second connecting plate 23 and the third connecting plate 27 are all plate units of a corner plate assembly.
Because the first corner piece 24 and the second corner piece 26 have a bidirectional line shape, the length of the two corner pieces is not too long for convenient assembly and positioning.
The straight plate assembly comprises two plate units, the two plate units of the straight plate assembly are straight plates, and two adjacent straight plates are welded to be connected and form a welding seam 101. The plate units in the top plate block 11 and the bottom plate block 13 should reduce the number of the flange plates 2 as much as possible, and according to the block structure length, in the embodiment, the plate units in the top plate block 11 and the bottom plate block 13 are divided into two. The butt seam 105 of two plate units is selected to be in the middle of the joint of the adjacent two pressing plates 51 according to the arrangement of the pressing plates 51. In this embodiment, as shown in fig. 1, the two straight plates of the top straight plate assembly are a first straight plate 21 and a second straight plate 22, the second straight plate 22 is connected to the first straight plate 21 by welding, the second straight plate 22 is connected to the second connecting plate 23 by welding to form a block body folding seam 102, and the first straight plate 21 is connected to another section by welding to form a first minor section folding seam 103; the two straight plates of the straight plate component at the bottom are respectively a third straight plate 28 and a fourth straight plate 29, the third straight plate 28 is connected with the fourth straight plate 29 in a welding manner, the third straight plate 28 is connected with the third connecting plate 27 to form another block body folding seam 102, and the fourth straight plate 29 is connected with another small section in a welding manner to form a second small section folding seam 104.
The step of blocking the flange plate 2 comprises:
and (3) finishing cutting of the flange plate by adopting a numerical control cutting machine, detecting the straightness a of the free edge in the length direction of the plate from the angle stay wire of the plate, wherein the straightness a is required to be less than or equal to 2mm, and transferring to the next procedure after the plate is qualified, otherwise, correcting the deformation.
A processed wood pattern 220 (see fig. 4) is produced based on the processing drawings of the first corner piece 24 and the second corner piece 26, the first corner piece 24 and the second corner piece 26 are cold-formed after blanking, and the processing accuracy is checked using the wood pattern 220.
As shown in fig. 1, the plate units of the flange plate 2 of the first section are, in turn: a first straight plate 21, a second straight plate 22, a second connecting plate 23, a first corner piece 24, a first connecting plate 25, a second corner piece 26, a third connecting plate 27, a third straight plate 28 and a fourth straight plate 29.
The block folding seams 102, the first small section folding seam 103 and the second small section folding seam 104 are flush with each pair of seams 105 of the corner plate component, so that the lifting and folding of the top plate block 11, the side wall block 12 and the bottom plate block 13 are not influenced.
And S2, drilling holes in the main body of each plate unit, drilling holes in one end, close to the butt seam 105, of the plate unit on only one side of the butt seam 105 and installing the embedded part 20, drilling holes in one end, close to the block folding seam 102, of the plate unit on only one side of the block folding seam 102 and installing the embedded part 20, and drilling holes in one end, close to the minor-section folding seam, of the plate unit on only one side of the minor-section folding seam and installing the embedded part 20.
Drilling:
1) according to the drawing of the pressing plate 51, a high-precision numerical control laser cutting machine is adopted to cut and manufacture a die pressing tool 53 (see fig. 5), and a phi 34mm screw hole in the die pressing tool 53 is cut out by laser, so that accumulated machining errors are avoided. The pressing die tooling 53 is a pressing block tooling 53 cut by a 8mm thick steel plate through a laser cutting machine according to a pressing block drawing for installing the OMEGA water stop 5, the hole interval on the pressing die tooling 53 is the same as that of the pressing plate 51, and the hole diameter is the same as the size of a hole (phi 34mm) to be drilled on the flange plate 2.
2) Taking the fourth straight plate 29 as an example, as shown in fig. 6, the dimensions of each plate unit are measured and corrected, and a positioning reference line 291 of the fourth straight plate 29 is drawn, the position of each die tool 53 is positioned according to the reference line 291, and a magnetic drill (a portable drilling tool) is used to drill holes in a diameter of 34 holes in the pressing plate 51 one by one. Because the precision of the die pressing tool 53 is ensured, the deviation of the drilling distance can be ensured to be less than or equal to 0.5mm by matching with the portable magnetic drill.
3) Directly scribing and drilling holes in the plate unit main body according to a drilling positioning diagram, drilling holes in one end, close to the butt seam 105, of the plate unit on one side of the butt seam 105, installing embedded parts 20, and not drilling holes in one end, close to the butt seam 105, of the plate unit on the other side of the butt seam 105; drilling and installing the embedded part 20 at one end of the plate unit on one side of the block folding seam 102, which is close to the block folding seam 102, and not drilling at one end of the plate unit on the other side of the block folding seam 102, which is close to the block folding seam 102; and drilling and installing the embedded part 20 at one end of the plate unit on one side of the minor joint folding seam close to the minor joint folding seam, and not drilling at one end of the plate unit on the other side of the minor joint folding seam close to the minor joint folding seam. Wherein the holes are all screw holes.
Installation of the embedded part 20:
1) according to the sizes of the holes on the embedded part 20 and the flange plate 2, a special bolt tool 6 is manufactured (see fig. 7).
2) As shown in fig. 8, the embedded parts 20 are aligned with the axes of the holes of Φ 34mm on the flange plate 2 using the dedicated bolt tooling 6, and then the embedded parts 20 are welded.
According to the national standard GB27-88, the diameter of a screw of an M30 hinge bolt is only phi 32mm, and the screw cannot be tightly matched with the drilled hole phi 34mm of the flange plate 2, so a special bolt tool needs to be prepared, in the embodiment, the special bolt tool 6 is a bolt for a hinge hole, as shown in fig. 7 and 8, the special bolt tool 6 is prepared according to the specification of a threaded hole of an embedded part 20 and the drilled hole size of the flange plate 2, the threaded hole M30 of the embedded part 20 is formed, and the drilled hole diameter phi 34mm of the flange plate 2 is formed. Therefore, the screw diameter ds of the bolt tooling 6 is phi 34mm, and the tolerance: 0-0.1 mm, and is tightly matched with the drilled hole of the flange plate 2.
3) As shown in fig. 9, after the embedded part 20 is welded, the fillet weld of the embedded part 20 is subjected to a vacuum tight test by using the tight test tool 7.
The specific method for detecting the weld tightness of the embedded part 20 comprises the following steps:
first, as shown in fig. 9, after the embedded parts 20 are welded, a soap solution with a concentration of 5% is applied to the weld positions 202, and the vacuum cover of the dense test tool 7 is covered on the embedded parts 20 of the flange plate 2.
Then, a negative pressure valve 72 of the seal test tool 7 is connected with compressed air to discharge air in the vacuum cover, negative pressure is formed in the cavity, a sealing ring 71 at the bottom of the vacuum cover is attached to the flange plate 2, and when a pressure gauge 73 reaches a specified pressure of 0.02mpa, whether soap solution bubbles at the welding line is observed through a transparent cover body of the vacuum cover, so that whether the welding line leaks or not is judged.
4) As shown in fig. 10, after the sealing test is completed, a through-length channel 8 is installed on the free edge of each plate unit to enhance the supporting strength of the flange plate 2, so as to prevent the flange plate 2 from deforming during the transferring and block welding processes. Specifically, as shown in fig. 11, taking the third straight plate 28 as an example for description, after the sealing test is completed, the long channel steel 8 is installed on the free edge of the third straight plate 28 to enhance the supporting strength of the third straight plate 28, and the long channel steel 8 is also installed on other plate units, which is not described herein any more.
And S3, mounting each plate unit of the flange plate 2 on the steel shell main body.
As shown in fig. 11, after the welding of each block structure of the steel shell main body is completed, the stiffening ribs 3 are firstly welded, then the transverse positions of the plate units are positioned according to the transverse reference lines of the block structures, the plate units are welded on the block structures, fillet welds between the plate units and the stiffening ribs 3 are firstly welded, and then deep fusion welds between the plate units and the end sealing plates 15 are welded; the method of installation of the individual panel units is similar and will not be described herein.
And S4, welding the plate units of the corner plate assembly, drilling a hole at one end of the plate unit at the other side of the butt joint 105, which is close to the butt joint 105, and installing the embedded part 20.
As shown in fig. 12, after welding, the hole 211 of the panel unit on the other side of the butt seam 105 near one end of the butt seam 105 is positioned through the hole of the end of the panel unit on one side of the butt seam 105, and then drilling is performed and the embedded part 20 is installed, thereby preventing welding from affecting the installation accuracy of the embedded part 20 on both sides of the butt seam 105.
Before the embedded parts 20 are installed, the weld reinforcement of each pair of seams 105 is polished to be flat so as to avoid influencing the sealing effect due to the attachment of the OMEGA water stop strips 5.
Each pair of joints 105 of the corner plate assembly is not positioned in the middle of the joint of the two press plates 51, and after the welding of the joints 105 is finished, the press plate tool 53 is used for drilling screw holes on one side of the joints 105 as a reference.
The embedment 20 is welded using the special bolt tooling 6 (see fig. 7 and 8).
Specifically, as shown in fig. 7, a tooling thread specification M30 is screwed into the threaded hole of the embedded part 20, and then the embedded part 20 is welded.
And S5, welding the straight plate assembly and the corner plate assembly, drilling one end of the plate unit on the other side of each block folding seam 102, which is close to the block folding seam 102, and installing the embedded part 20.
And (3) by taking the plate unit datum line as a positioning line, checking whether the second straight plate 22 and the second connecting plate 23, and the third straight plate 28 and the third connecting plate 27 are aligned, and if the second straight plate and the third connecting plate are misaligned, properly adjusting the structural position to ensure that the free edges of the flange plates 2 are aligned.
After welding, a hole at one end, close to the block body folding seam 102, of a plate unit at the other side of the block body folding seam 102 is located through a plate unit at one side of the block body folding seam 102, then a hole is drilled, and the embedded part 20 is installed, so that the influence of welding on the installation accuracy of the embedded part 20 at two sides of the welding folding seam 102 can be avoided, the principle of the method is the same as the principle of welding and drilling of the butt joint 105, and the method can be seen in fig. 12.
Before the embedded parts 20 are installed, the weld joint residual height of the block body folding seams 102 is polished to be flat so as not to influence the sealing effect caused by the attachment of the OMEGA water stop strips 5.
And S6, welding the first section and the second section, drilling a hole at one end, close to the small section folding seam, of the plate unit at the other side of the small section folding seam after welding, and installing the embedded part 20.
After welding, positioning a hole at one end, close to the minor joint folding seam, of the plate unit at the other side of the folding seam through a hole of the plate unit at one side of the minor joint folding seam, and then drilling and installing the embedded part 20, wherein the principle of the drilling and welding is the same as that of the welding of the butt seam 105, and can be seen in fig. 12.
Before the embedded part 20 is installed, the weld joint surplus height of the small section folding seam is polished to be smooth, so that the sealing effect is not influenced by the attachment of the OMEGA water stop belt 5.
The weld joints of the embedded part 20 are required to be watertight, and the steps S4, S5 and S6 require that each process needs to vacuumize the embedded part 20 to detect the watertight effect after the embedded part 20 is welded. The specific sealing effect detection parameter may be the sealing test performed in step S2.
As shown in fig. 1, a plurality of nodes are formed at the welding seam of each plate unit of the flange plate 2, as shown in fig. 1 and fig. 13-22, each node includes a node A, B, C, D, E, F, G, H, J, K, wherein a node B, C, E, F, G, H, J, K is located in the middle of a pressure plate 51, in order to prevent welding seam welding shrinkage from affecting the distance accuracy of the embedded part 20, the embedded part 20 on the flange plate 2 on one side of the folding seam is drilled, after the flange plate 2 is welded, the screw hole on the other side of the welding seam of the flange plate 2 is drilled, and then the embedded part 20 is welded, so that the welding shrinkage deformation and the assembling deformation are moved to the joint of the two pressure plates 51, the distance between all the screw holes in the same pressure plate 51 is ensured to meet the requirements, the installation accuracy of the pressure plate 51 is improved, and the installation accuracy of the OMEGA waterstop 5 can be improved.
As shown in the node diagram A, D in fig. 1, the flange plates 2 in the top plate block 11 and the bottom plate block 13 are divided into two plate units, respectively, according to the block structure length. Depending on the arrangement of the pressure plates 51, the two flange plates 2 are selected to be in the middle of the joint of the two pressure plates 51 for the seam 105. Therefore, the plate units on both sides of the weld joint 101 can be directly welded without affecting the installation of the embedded parts 20.
As shown in a node diagram G, H, J, K in fig. 1, the embedded parts 20 on the side of the butt joint 105 of the corner plate assembly need to be drilled after the butt joint 105 is welded, and then the embedded parts 20 are assembled, so that the influence of welding shrinkage on the distance accuracy of the embedded parts 20 is avoided.
The method can transfer the welding shrinkage deformation and the assembly deformation to the joint of the two pressing plates 51, ensures that the distance between all screw holes in the same pressing plate 51 meets the requirement, simultaneously ensures that the embedded parts 20 and 211 are concentric with the screw holes of the flange plate 2 through the special bolt tool 6, finally controls the installation error of the embedded parts 20 and 201 within +/-0.5 mm, and ensures the smooth installation of the OMEGA waterstop 5.
According to the manufacturing method of the flange plate of the end steel shell structure, the plate units are reasonably divided, the integrity of the plate units of the flange plate 2 is maximized on the premise of ensuring the precision and quality, most of the embedded parts 20 can be installed in the manufacturing stage of the plate units of the flange plate 2, the follow-up high-altitude operation is reduced, and the method has the advantages of high work efficiency and guaranteed construction quality.
The method takes the manufacturing process of the steel shell structure as the leading factor, and reasonably arranges each process of manufacturing the end steel shell flange plate 2 and installing the embedded part 20. The tool is innovatively designed and manufactured by combining the processing capacity of the industry, is simple and efficient, overcomes the problem of high precision of the embedded part 20, and has the characteristics of low cost and remarkable effect.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or a positional relationship based on the orientation shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The manufacturing method of the flange plate of the end steel shell structure is characterized in that the flange plate (2) is of an annular structure, the flange plate (2) comprises a first small section and a second small section, the first small section and the second small section are welded and connected and form a small section folding seam, and the first small section and the second small section both comprise: the block folding joint comprises a corner plate component and two straight plate components, wherein the two straight plate components are respectively connected to two ends of the corner plate component in a welding mode and form a block folding joint (102), each straight plate component and the corner plate component respectively comprise at least two plate units, and the plate units of the corner plate component are connected in a welding mode and form a butt joint (105); the manufacturing method of the flange plate of the end steel shell structure comprises the following steps:
s1, preparing each plate unit of the flange plate (2);
s2, drilling holes in the main body of each plate unit, drilling holes and installing embedded parts (20) at one end, close to the butt seam (105), of the plate unit on only one side of the butt seam (105), drilling holes and installing embedded parts (20) at one end, close to the block folding seam (102), of the plate unit on only one side of the block folding seam (102), and drilling holes and installing embedded parts (20) at one end, close to the minor-section folding seam, of the plate unit on only one side of the minor-section folding seam;
s3, mounting each plate element of the flange plate (2) on a steel shell main body;
s4, welding and connecting the plate units of the corner plate assembly, drilling a hole at one end, close to the butt joint seam (105), of the plate unit on the other side of the butt joint seam (105) after welding, and installing an embedded part (20);
s5, welding and connecting the straight plate assembly and the corner plate assembly, drilling a hole at one end, close to the block folding seam (102), of the plate unit on the other side of each block folding seam (102) after welding, and installing an embedded part (20);
and S6, welding the first small section and the second small section, drilling a hole at one end, close to the small section folding seam, of the plate unit at the other side of the small section folding seam after welding, and installing an embedded part (20).
2. The method for manufacturing a flange plate of an end steel shell structure according to claim 1, wherein the corner plate assembly comprises a first corner piece (24) and a second corner piece (26), the first corner piece (24) and the second corner piece (26) are connected through a first connecting plate (25), the first corner piece (24) is connected with one of the straight plate assemblies through a second connecting plate (23), the second corner piece (26) is connected with the other straight plate assembly through a third connecting plate (27), and the first corner piece (24), the second corner piece (26), the first connecting plate (25), the second connecting plate (23) and the third connecting plate (27) are plate units of the corner plate assembly.
3. The method for manufacturing a flange plate of an end steel shell structure according to claim 2, wherein the step S1 comprises the following steps:
blanking and cutting the flange plate unit plate to form a flange plate piece;
and cold-bending and forming the flange plate pieces of the first corner piece (24) and the second corner piece (26).
4. The method for manufacturing a flange plate of an end steel shell structure according to claim 1, wherein in the step S2, holes are drilled in the plate unit through a pressing plate tool.
5. The method for manufacturing a flange plate of an end steel shell structure according to claim 1, wherein in the step S2, the embedded parts (20) are aligned with the axes of the holes by bolt tooling (6), and then the embedded parts (20) are welded to the plate unit.
6. The method for manufacturing the flange plate of the end steel shell structure according to claim 5, wherein in the step S2, after the embedded parts (20) are welded, a welding seal test is performed.
7. The method for manufacturing a flange plate of an end-hat structure according to claim 1, wherein in step S5, the alignment of the plate units on both sides of the block-folding seam (102) is checked by positioning each plate unit by the steel-shell body.
8. The method for manufacturing a flange plate of an end steel shell structure according to claim 1, wherein in the step S4, a hole of one end of the plate unit near the butt seam (105) on the other side of the butt seam (105) is positioned through the hole of the end of the plate unit on one side of the butt seam (105) after welding;
in the step S5, positioning a hole of one end of the plate unit on the other side of the block folding seam (102) close to the block folding seam (102) through a hole of the plate unit on one side of the block folding seam (102) after welding;
in the step S6, a hole of one end of the plate unit on the other side of the folding seam close to the minor-segment folding seam is positioned by a hole of the plate unit on one side of the minor-segment folding seam after welding.
9. Method for making a flange plate of an end steel shell structure according to any of claims 1-7, characterized in that the pair of seams (105), the block folding seam (102) and the minor joint folding seam are located in the middle of the pressure plate (51).
10. The method for manufacturing a flange plate of an end steel shell structure according to any one of claims 1-7, wherein the straight plate assembly comprises two plate units, both of the two plate units of the straight plate assembly are straight plates, and two adjacent straight plates are welded and connected.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102011369A (en) * | 2010-11-12 | 2011-04-13 | 中铁十二局集团第二工程有限公司 | Construction method of steel shells of bridge closure segments striding over various roads |
| WO2017083903A1 (en) * | 2015-11-21 | 2017-05-26 | Bfre Pty Ltd As Trustee | Improvements in slab on ground formwork design and installation |
| CN107311030A (en) * | 2017-09-02 | 2017-11-03 | 如皋市双亚环保科技有限公司 | A kind of large scale equipment installation system |
| CN207130770U (en) * | 2017-08-30 | 2018-03-23 | 中交公路规划设计院有限公司 | One-shot forming L-type end box hat structure construction |
| CN109208642A (en) * | 2018-11-19 | 2019-01-15 | 中铁二十三局集团有限公司 | A kind of construction method of assembled under-traverse tunnel |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011369A (en) * | 2010-11-12 | 2011-04-13 | 中铁十二局集团第二工程有限公司 | Construction method of steel shells of bridge closure segments striding over various roads |
| WO2017083903A1 (en) * | 2015-11-21 | 2017-05-26 | Bfre Pty Ltd As Trustee | Improvements in slab on ground formwork design and installation |
| CN207130770U (en) * | 2017-08-30 | 2018-03-23 | 中交公路规划设计院有限公司 | One-shot forming L-type end box hat structure construction |
| CN107311030A (en) * | 2017-09-02 | 2017-11-03 | 如皋市双亚环保科技有限公司 | A kind of large scale equipment installation system |
| CN109208642A (en) * | 2018-11-19 | 2019-01-15 | 中铁二十三局集团有限公司 | A kind of construction method of assembled under-traverse tunnel |
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