CN105290724A - Manufacturing process for lower chords of bridge - Google Patents
Manufacturing process for lower chords of bridge Download PDFInfo
- Publication number
- CN105290724A CN105290724A CN201510646454.0A CN201510646454A CN105290724A CN 105290724 A CN105290724 A CN 105290724A CN 201510646454 A CN201510646454 A CN 201510646454A CN 105290724 A CN105290724 A CN 105290724A
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- China
- Prior art keywords
- welding
- riser
- unit
- line
- chord
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- 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.)
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Abstract
The invention relates to a manufacturing process for lower chords of a bridge. The process comprises the main steps as follows: step 1: installing and welding a top plate unit, a bottom plate unit and a vertical plate unit; step 2: installing and welding parts of the vertical plate unit; step 3: assembling the top plate unit and the bottom plate unit; step 4: welding main welding seams and installing the parts; and step 5: drilling location holes and bolt holes and assembling rest parts. The manufacturing process has the advantages as follows: all of the units are decomposed and assemble gradually; the sequence is reasonable, and the connection accuracy is high; rods are assembled by assembling horizontally and invertedly; shapes of the parts and complex structures are fully considered; and high accuracy requirements are fully met.
Description
Technical field
The present invention relates to a kind of bridge field, particularly a kind of bridge lower edge manufacture craft.
Background technology
Orthotropic plate integrated deck structure, floorings and lower boom, in length and breadth beam are connected as a single entity, and structure detail is complicated, formulate rational welding procedure, strict control welding quality is very important; The control stress point of lower boom manufacture is except comprising lower boom priority control point, and rational assembly welding and drilling order ensure the key of this rod member geometric accuracy especially.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of complete high-quality bridge lower boom manufacture craft.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of bridge lower boom manufacture craft, and its innovative point is: its step is as follows:
1) assembly welding top plate unit, bottom board unit and riser unit: top plate unit is a rectangle, welds a ribbed stiffener extended along long axis direction at its center; Bottom board unit is similar to top plate unit structure, and procedure of processing is identical, and only the width of bottom board unit is less than top plate unit width; Riser unit is two pieces of identical and flat boards in irregular shape, on flat board, first draw system line and the position line such as ribbed stiffener, dividing plate and node, and center-punching, by line welding ribbed stiffener;
2) assembly welding riser unit parts: riser is placed in also lining on platform, repetition measurement dividing plate, chord of arch level board, the chord member level board position line, ensure the accuracy of location and the perpendicularity of riser, and ensure chord of arch level board bolt hole concentricity; Each parts are welded on riser by line; Ensure upper and lower riser system line perpendicularity, by assembled for two riser welding;
3) assemble top plate unit and bottom board unit: top plate unit divide sized by two pieces, be vertically set on riser unit both sides respectively, dull and stereotyped for both sides spot welding put in place, overall in grooved after welding, and weld the main weld of chord of arch level board and riser; Bottom board unit divide sized by two pieces, two pieces of bottom board unit are put respectively and are welded in the riser opposite side parallel with top board, overall in box after welding;
4) main weld welding and parts are installed: be that inversion is placed on platform by entirety, available special frock is fixed, convenient processing; First detect the side sway of each parts, vertical curved, distortion, then carry out a series of finishing according to testing result, assembly welding lateral roof unit after finishing, overall in box after assembly welding, after carry out the welding of box main weld; Main weld has welded rear continuation welding lower chord of arch ribbed stiffener, lower chord of arch dividing plate and anticollision barrier connector; Entirety is done 180 ° of upsets, note in switching process preventing collision, the overall placement in positive position after upset, same recruitment clamping is fixed, carry out the welding of top plate unit melt-through weld, postwelding need detect a flaw to guarantee welding quality, after top plate unit melt-through weld has been detected a flaw, continues chord of arch ribbed stiffener, upper chord of arch dividing plate and the embedding benefit section of each floor on assembly welding;
5) bore locating hole and bolt hole: after rod member finishing is qualified, node when platform is rule with riser unit draws system line for benchmark; Be that benchmark draws node side chord member and chord of arch locating hole line with node center, with gantry numerical control drilling locating hole, ensure that both sides riser bolt hole is concentric; And then be that benchmark draws not a node side chord member locating hole line with node center, with gantry numerical control drilling locating hole after rotating; Card model connects and bores all the other bolts hole of riser, and line card model bores two bottom plate hole, number hole drill spilled water hole, then assembly welding top board ribbed stiffener;
6) remainder is assembled: take system line as benchmark line assembly welding both sides beam joint plate lateral adapter plate and miscellaneous part, take system line as benchmark assembly welding secondary part, take hole as benchmark line crop and hand hole, and by drawing privileged sites putty is sealed.
Further, described step (2) and the middle electric welding of step (3) are spot welding, and solder joint is closeer.
Further, symmetrical welding is in the same way required during welding main weld in described step (4).
Further, qualified can line by upper mounting plate must be detected after rod member finishing in described step (5), otherwise inaccurate upper mounting plate line and upper lathe drill locating hole.
The invention has the advantages that:
1) progressively divide de-assembly unit, it is high that order rationally connects precision, and rod member adopts the method assembling of paperback and flip bonded, takes into full account the shape of parts, more complicated structure and higher precision prescribed are all taken into full account and met;
2) first adopt spot welding location, determining means position, facilitates follow-up adjustment and the welding of miscellaneous part; The solder joint proof strength of comparatively dense, avoids being out of shape in subsequent operation;
3) be symmetrically welded in the same way to reduce torsional deformation;
4) rod member qualified after can to rule boring, reduction in the numbers of seconds of improving the quality of products.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of bridge lower boom of the present invention riser unit.
Fig. 2 is a kind of bridge lower boom of the present invention schematic diagram.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the invention discloses a kind of bridge lower edge manufacture craft, orthotropic plate integrated deck structure, floorings and lower boom, in length and breadth beam are connected as a single entity, structure detail is complicated, formulates rational welding procedure, strict control welding quality is very important; The control stress point of lower boom manufacture is except comprising lower boom priority control point, and rational assembly welding and drilling order ensure the key of this rod member geometric accuracy especially.Except the CCP taking common lower boom to manufacture, take following major measure:
1. rod member adopts the method assembling of paperback and flip bonded;
2. for avoiding chord of arch level board 2 cannot hole after box composition, chord of arch level board 2 is holed before assembly welding;
3. in node, system line 6 must be marked in outside before assembling, first hole due to chord of arch level board 2 during box assembling, must take measures to guarantee the concentricity of chord of arch level board 2 during assembling, also want the relativeness must guaranteeing bolt hole and system line 6 simultaneously;
4., during drilling, gantry numerical control drilling locating hole, card model connects and bores other Kong Qun.
Overall procedure is as follows:
Top plate unit 7, bottom board unit 4, riser unit 5 assembly welding, riser unit 5 draws system line, and chord of arch level board unit card sample bores two bolt hole, reserved welding contracted quantity.
During assembling with riser system line 6 for benchmark, first spread dividing plate 1, chord of arch level board 2 unit, chord member level board 3, organize riser unit 5 again and top plate unit 7 forms grooved, organize bottom board unit 4 again and form box, assembly welding finishing after with system line 6 for benchmark line, gantry numerical control drilling locating hole, card model bore more than hole, be benchmark assembly welding secondary part with system line 6, take hole as benchmark line crop and hand hole, and by drawing privileged sites putty is sealed.
Concrete operation step is:
1) assembly welding top plate unit 7, bottom board unit 4 and riser unit 5: top plate unit 7 is a rectangle, welds a ribbed stiffener extended along long axis direction at its center; Bottom board unit 4 is similar to top plate unit 7 structure, and procedure of processing is identical, and only the width of bottom board unit 4 is less than top plate unit 7 width; Riser unit 5 is two pieces of identical and flat boards in irregular shape, on flat board, first draw system line 6 and ribbed stiffener, the position line of dividing plate 1 and node, and center-punching, by line welding ribbed stiffener;
2) assembly welding riser unit parts: riser unit 5 is placed in also lining on platform, repetition measurement dividing plate 1, chord of arch level board 2, chord member level board 3 position line, ensure the accuracy of location and the perpendicularity of riser unit 5, and ensure chord of arch level board 2 bolt hole concentricity; Each parts are welded on riser cell board 5 by line; Ensure upper and lower riser cellular system line 6 perpendicularity, by assembled for two riser element solder;
3) assemble top plate unit 7 and bottom board unit 4: sized by top plate unit 7 points two pieces, be vertically set on riser unit 5 both sides respectively, dull and stereotyped for both sides spot welding is put in place, overall in grooved after welding, and weld the main weld of chord of arch level board 2 and riser unit 5; Sized by bottom board unit 4 points two pieces, two pieces of bottom board unit 4 are welded in the riser opposite side parallel with top plate unit 7 respectively, overall in box after welding;
4) main weld welding and parts are installed: be that inversion is placed on platform by entirety, available special frock is fixed, convenient processing; First detect the side sway of each parts, vertical curved, distortion, then carry out a series of finishing according to testing result, assembly welding lateral roof unit 7 after finishing, overall in box after assembly welding, after carry out the welding of box main weld; Main weld has welded rear continuation welding lower chord of arch ribbed stiffener, lower chord of arch dividing plate and anticollision barrier connector; Entirety is done 180 ° of upsets, note in switching process preventing collision, the overall placement in positive position after upset, same recruitment clamping is fixed, carry out the welding of top plate unit 7 melt-through weld, postwelding need detect a flaw to guarantee welding quality, after top plate unit 7 melt-through weld has been detected a flaw, continues chord of arch ribbed stiffener, upper chord of arch dividing plate and the embedding benefit section of each floor on assembly welding;
5) bore locating hole and bolt hole: after rod member finishing is qualified, node when platform is rule with riser unit 5 draws system line 6 for benchmark; Be that benchmark draws node side chord member and chord of arch locating hole line with node center, with gantry numerical control drilling locating hole, ensure that both sides riser bolt hole is concentric; And then be that benchmark draws not a node side chord member locating hole line with node center, with gantry numerical control drilling locating hole after rotating; Card model connects and bores all the other bolts hole of riser, and line card model bores two bottom plate hole, number hole drill spilled water hole, then assembly welding top board ribbed stiffener;
6) remainder is assembled: with system line 6 for benchmark line assembly welding both sides beam joint plate lateral adapter plate and miscellaneous part, be benchmark assembly welding secondary part with system line 6, take hole as benchmark line crop and hand hole, and by drawing privileged sites putty is sealed.
In step (2) and step (3), electric welding is spot welding, and solder joint is closeer, so that the installation of follow-up correction, miscellaneous part and prevent distortion; Symmetrical welding is in the same way required, to reduce torsional deformation during welding main weld in step (4); In step (5), qualified can line by upper mounting plate must be detected after rod member finishing, otherwise inaccurate upper mounting plate line and upper lathe drill locating hole; Strictly observe monitoring step, improve the quality of products, check defect in time and correct, reduction in the numbers of seconds.
More than show and describe general principle of the present invention and principal character.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a bridge lower boom manufacture craft, is characterized in that: its step is as follows:
Assembly welding top plate unit, bottom board unit and riser unit: top plate unit is a rectangle, weld a ribbed stiffener extended along long axis direction at its center; Bottom board unit is similar to top plate unit structure, and procedure of processing is identical, and only the width of bottom board unit is less than top plate unit width; Riser unit is two pieces of identical and flat boards in irregular shape, on flat board, first draw system line and the position line such as ribbed stiffener, dividing plate and node, and center-punching, by line welding ribbed stiffener;
Assembly welding riser unit parts: riser is placed in also lining on platform, repetition measurement dividing plate, chord of arch level board, the chord member level board position line, ensure the accuracy of location and the perpendicularity of riser, and ensure chord of arch level board bolt hole concentricity; Each parts are welded on riser by line; Ensure upper and lower riser system line perpendicularity, by assembled for two riser welding;
Assembling top plate unit and bottom board unit: top plate unit divide sized by two pieces, be vertically set on riser unit both sides respectively, dull and stereotyped for both sides spot welding put in place, overall in grooved after welding, and weld the main weld of chord of arch level board and riser; Bottom board unit divide sized by two pieces, two pieces of bottom board unit are put respectively and are welded in the riser opposite side parallel with top board, overall in box after welding;
Main weld welding and parts are installed: be that inversion is placed on platform by entirety, available special frock is fixed, convenient processing; First detect the side sway of each parts, vertical curved, distortion, then carry out a series of finishing according to testing result, assembly welding lateral roof unit after finishing, overall in box after assembly welding, after carry out the welding of box main weld; Main weld has welded rear continuation welding lower chord of arch ribbed stiffener, lower chord of arch dividing plate and anticollision barrier connector; Entirety is done 180 ° of upsets, note in switching process preventing collision, the overall placement in positive position after upset, same recruitment clamping is fixed, carry out the welding of top plate unit melt-through weld, postwelding need detect a flaw to guarantee welding quality, after top plate unit melt-through weld has been detected a flaw, continues chord of arch ribbed stiffener, upper chord of arch dividing plate and the embedding benefit section of each floor on assembly welding;
Bore locating hole and bolt hole: after rod member finishing is qualified, node when platform is rule with riser unit draws system line for benchmark; Be that benchmark draws node side chord member and chord of arch locating hole line with node center, with gantry numerical control drilling locating hole, ensure that both sides riser bolt hole is concentric; And then be that benchmark draws not a node side chord member locating hole line with node center, with gantry numerical control drilling locating hole after rotating; Card model connects and bores all the other bolts hole of riser, and line card model bores two bottom plate hole, number hole drill spilled water hole, then assembly welding top board ribbed stiffener;
Assembling remainder: taking system line as benchmark line assembly welding both sides beam joint plate lateral adapter plate and miscellaneous part, take system line as benchmark assembly welding secondary part, take hole as benchmark line crop and hand hole, and seals privileged sites putty by drawing.
2. a kind of bridge lower boom manufacture craft according to claim 1, is characterized in that: described step (2) and the middle electric welding of step (3) are spot welding, and solder joint is closeer.
3. a kind of bridge lower boom manufacture craft according to claim 1, is characterized in that: require symmetrical welding in the same way during welding main weld in described step (4).
4. a kind of bridge lower boom manufacture craft according to claim 1, is characterized in that: must detect qualified can line by upper mounting plate after rod member finishing in described step (5), otherwise inaccurate upper mounting plate line and upper lathe drill locating hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510646454.0A CN105290724B (en) | 2015-10-09 | 2015-10-09 | A kind of bridge lower boom manufacture craft |
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| CN201510646454.0A CN105290724B (en) | 2015-10-09 | 2015-10-09 | A kind of bridge lower boom manufacture craft |
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| CN105290724A true CN105290724A (en) | 2016-02-03 |
| CN105290724B CN105290724B (en) | 2017-08-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729063A (en) * | 2016-02-26 | 2016-07-06 | 江苏中铁山桥重工有限公司 | Manufacturing method of double-anchor box type external node chord member |
| CN107199437A (en) * | 2016-03-16 | 2017-09-26 | 中铁十五局集团有限公司 | A kind of steel anchor beam section preparation method |
| CN107253026A (en) * | 2017-06-23 | 2017-10-17 | 江苏中铁山桥重工有限公司 | A kind of multidirectional four anchor heads overall steel anchor beam preparation method |
| CN111119051A (en) * | 2019-12-24 | 2020-05-08 | 江苏中铁山桥重工有限公司 | Novel penetrating type chord structure |
| CN114211150A (en) * | 2021-12-30 | 2022-03-22 | 武船重型工程股份有限公司 | Node welding method for double-layer truss bridge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729063A (en) * | 2016-02-26 | 2016-07-06 | 江苏中铁山桥重工有限公司 | Manufacturing method of double-anchor box type external node chord member |
| CN105729063B (en) * | 2016-02-26 | 2017-11-10 | 江苏中铁山桥重工有限公司 | A kind of box external node chord member preparation method of double anchors |
| CN107199437A (en) * | 2016-03-16 | 2017-09-26 | 中铁十五局集团有限公司 | A kind of steel anchor beam section preparation method |
| CN107199437B (en) * | 2016-03-16 | 2019-06-07 | 中铁十五局集团有限公司 | A kind of steel anchor beam segment preparation method |
| CN107253026A (en) * | 2017-06-23 | 2017-10-17 | 江苏中铁山桥重工有限公司 | A kind of multidirectional four anchor heads overall steel anchor beam preparation method |
| CN107253026B (en) * | 2017-06-23 | 2019-03-19 | 江苏中铁山桥重工有限公司 | A kind of multidirectional four anchor heads overall steel anchor beam production method |
| CN111119051A (en) * | 2019-12-24 | 2020-05-08 | 江苏中铁山桥重工有限公司 | Novel penetrating type chord structure |
| CN114211150A (en) * | 2021-12-30 | 2022-03-22 | 武船重型工程股份有限公司 | Node welding method for double-layer truss bridge |
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| CN105290724B (en) | 2017-08-25 |
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Address after: 226500 Wenjin Road, Yangtze River Town, Rugao City, Nantong City, Jiangsu Province Patentee after: China Railway Shanqiao (Nantong) Co.,Ltd. Address before: 226500 Wenjin Road, Yangtze River Town, Rugao City, Nantong City, Jiangsu Province Patentee before: JIANGSU CHINA RAILWAY SHANHAIGUAN BRIDGE HEAVY INDUSTRY Co.,Ltd. |