CN114319133B - Process method for precisely assembling U-shaped ribs and diaphragm plates - Google Patents
Process method for precisely assembling U-shaped ribs and diaphragm plates Download PDFInfo
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- CN114319133B CN114319133B CN202210046374.1A CN202210046374A CN114319133B CN 114319133 B CN114319133 B CN 114319133B CN 202210046374 A CN202210046374 A CN 202210046374A CN 114319133 B CN114319133 B CN 114319133B
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Abstract
Aiming at the problems that the assembly gap between the U rib and the transverse baffle plate notch is overlarge, the welding efficiency and quality of fillet weld are affected, and the fatigue performance of the orthotropic steel bridge deck plate and the use of a bridge are finally affected, the invention discloses a process method for precisely assembling the U rib and the transverse baffle plate.
Description
Technical Field
The invention belongs to the technical field of orthotropic steel bridge deck board assembly, and particularly relates to a process method for precisely assembling U ribs and transverse baffles.
Background
Orthotropic steel deck boards have been widely used for their high load carrying capacity, light weight, short installation time, etc. However, due to the complex geometry of the orthotropic steel bridge deck, when a certain deflection angle exists between the U rib and the diaphragm plate notch due to installation errors, the fatigue performance of the connection part of the U rib and the diaphragm plate of the orthotropic steel bridge deck can be affected.
As shown in fig. 1, the main structure of the U-shaped rib is U-shaped rib 1, the bottom of the U-shaped rib is steel plate 2, and the side wall of the U-shaped rib is wing plate 3; the main structure of diaphragm is diaphragm 4, and it has seted up diaphragm notch 5, and the side of diaphragm notch 5 is notch lateral wall 6, and the bottom of diaphragm notch 5 is the welding hole 7.
In the prior art, the assembling process of the U-shaped rib and the diaphragm plate comprises the following steps:
(1) According to the size of the U rib, adding the gap width delta between the wing plate and the side wall of the notch, processing the diaphragm plate, and cutting out a corresponding diaphragm plate notch and a corresponding overseld hole;
(2) And then the diaphragm plate is clamped on the U rib, and then welding is carried out according to the design size of the fillet weld.
In the prior art, the gap width delta between the wing plate and the side wall of the notch is generally required to be within 2mm, when the gap width delta exceeds 2mm, the exceeding part is required to be welded and overlaid, flaw detection is performed after the overlaying is finished, and after the flaw detection is qualified, the overlaying side is cut to an assembly allowable range by a semi-automatic cutting machine and then assembled.
However, in the actual splicing process, the following actual factors exist due to the U-ribs and the diaphragm: at present, the finished U-rib feeding materials have deviation, the deviation condition of each U-rib is inconsistent, and the deviation conditions such as partial opening width, left and right limb height, side bending and the like exist; meanwhile, the notch of the diaphragm plate has deviation in numerical control blanking; although the deviation of single parts is in the allowable range, accumulated deviation can occur during assembly, so that the problem that the gap is overlarge at one side close to one side or the gap is overlarge at two sides occurs during assembly of the U-shaped ribs and the notch of the diaphragm plate is caused.
The accumulated deviation caused by the practical factors causes larger fluctuation of the gap width delta between the wing plate and the side wall of the notch, more parts with the gap width delta exceeding 2mm are formed, more welding parts needing a build-up welding-flaw detection-cutting process are formed, the assembly efficiency of the U rib and the diaphragm is seriously affected, and meanwhile, the fatigue performance of the connecting part of the U rib and the diaphragm is greatly and negatively affected.
Disclosure of Invention
Aiming at the problems that the assembly gap between the U rib and the transverse baffle plate notch is overlarge, the welding efficiency and quality of fillet weld are affected, and the fatigue performance of the orthotropic steel bridge deck plate and the use of a bridge are finally affected, the invention discloses a process method for precisely assembling the U rib and the transverse baffle plate.
A process method for precisely assembling U-shaped ribs and diaphragm plates comprises the following steps:
(1) According to the size and the interval of the U-shaped ribs, clamping dies 8 with different specifications are processed, and a plurality of parallel partition plates 9 are arranged on the clamping dies 8;
(2) According to the size of the U-shaped rib, machining a model block 11, wherein the shape of the model block 11 is a right trapezoid, the inclined surface of the model block 11 is a model block contact surface 12, and the inclination of the model block contact surface 12 is the same as that of a wing plate 3 of the U-shaped rib; when the model block 11 is processed, the model block 11 needs to be put, the put length is r, and when the model block 11 is installed in the clamping die 8, a larger gap is reserved between the model block contact surface 12 and the wing plate 3 of the U rib so as to accommodate the U rib with different deviation;
(3) According to the size and the installation interval of the U-shaped ribs, the diaphragm is firstly processed, and negative tolerance blanking is adopted for the width of the notch 5 of the diaphragm, and the specific method for blanking by the negative tolerance is as follows: the notch side wall 6 of the diaphragm plate extends outwards, and the extension length is d;
(4) Fixedly mounting the model block 11 in the clamping die 8, then buckling the clamping die 8 on the U-shaped rib, and enabling the clamping die 8 to coincide with the central line of the U-shaped rib; then, a standard block 14 with a fixed width w is used outside the clamping die 8, and the standard block 14 is used by the following method: the wing plate 3 is closely attached to the standard block contact surface 15 and is abutted against the model block 11, and then the standard block line drawing surface 16 is used for drawing lines, wherein the line drawing lines are parallel to the wing plate 3 and fall on the model block 11; drawing lines on two sides of each U-shaped rib;
(5) Numbering each U rib, and measuring and recording the distance s between each drawing line and the contact surface 12 of the model block;
(6) By comparing the theoretical value S of S with the actual measured value S, the length X of the notch side wall 6 to be cut can be calculated;
(7) Drawing a diaphragm groove center line 17 in the diaphragm groove 5, aligning the diaphragm groove center line 17 with a U rib longitudinal center line 18, cutting the groove side wall 6 according to the calculated cutting length X, and processing a pass welding hole 7 with corresponding specification to obtain a diaphragm closely matched with the U rib;
(8) And (3) clamping the diaphragm plate obtained in the step (7) on the U rib, and welding according to the design size of the fillet weld.
Further, the clamping die 8 is formed by cutting an aluminum plate through a wire, or by cutting carbon steel through plasma.
Further, a plurality of handles 10 are arranged on the top of the clamping die 8.
Further, an adjusting bolt 13 is installed on the model block 11, a threaded through hole is formed in the model block 11 and is matched with the adjusting bolt 13, and a threaded hole matched with the adjusting bolt 13 is also formed in the partition plate 9.
Further, the standard block 14 is in the shape of a parallelogram.
Further, the model block contact surface 12 is machined, so that the close contact between the model block contact surface 12 and the wing plate 3 of the U-shaped rib is ensured; the model block 11 processed in this way can be used for drawing lines instead of the standard block 14.
The invention has the advantages that:
1. the method has the advantages that the design is simple and reasonable, the installation and the operation are convenient, the matched cutting can be carried out on the diaphragm plates through the combined use of the clamping die and the standard blocks, the assembling gap between the U-shaped ribs and the notch of the diaphragm plates is effectively controlled, the acceptance requirement is met, the manufacturing precision is improved, the welding seam quality is ensured, the fatigue performance of the orthotropic steel bridge deck is effectively improved, and finally the use and the operation safety of the bridge are ensured;
2. the assembly gap between the U rib and the diaphragm plate notch is accurately controlled, so that the build-up welding amount is effectively reduced, the manufacturing cost is reduced, and the assembly efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art assembly;
FIG. 2 is a schematic view of a bulkhead slot in an assembly mode of the invention;
FIG. 3 is an enlarged schematic view of a first machined diaphragm plate of the present invention;
FIG. 4 is an enlarged schematic view of a cutting block of the pocket side wall of the present invention;
FIG. 5 is a schematic view of the assembled mold and block according to the present invention;
FIG. 6 is an enlarged schematic view of a model block of the present invention;
FIG. 7 is a schematic view of the present invention after the card die and U-ribs are combined;
FIG. 8 is a schematic diagram of a line drawing process according to embodiment 1 of the present invention;
FIG. 9 is an enlarged schematic view of a standard block of embodiment 2 of the present invention;
in the figure, 1-U rib, 2-steel plate, 3-wing plate, 4-diaphragm, 5-diaphragm notch, 6-notch side wall, 7-over-welded hole, 8-clamping die, 9-diaphragm, 10-handle, 11-model block, 12-model block contact surface, 13-adjusting bolt, 14-standard block, 15-standard block contact surface, 16-standard block line drawing surface, 17-diaphragm notch center line, 18-U rib longitudinal center line
In the figure, alpha-is the included angle between the wing plate and the steel plate;
delta-is the gap width between the wing plate and the slot side wall;
l-is the theoretical opening length of the notch of the diaphragm plate;
d-is the epitaxial length of the side wall of the notch;
x-is the cutting length of the side wall of the notch;
r-is the length of the model block;
s-is the actual measurement distance between the contact surface of the drawing line and the model block;
w-is the width of the standard block;
Detailed Description
Example 1
A process method for precisely assembling U-shaped ribs and diaphragm plates comprises the following steps:
(1) According to the size and the interval of the U ribs, clamping dies 8 with different specifications are processed, the clamping dies 8 are formed by cutting aluminum plates in a linear mode, a plurality of parallel partition plates 9 are arranged on the clamping dies 8, and a plurality of handles 10 are arranged on the tops of the clamping dies 8;
(2) According to the size of the U-rib, machining a model block 11, wherein the shape of the model block 11 is a right trapezoid, the inclined surface of the model block 11 is a model block contact surface 12, and the inclination of the model block contact surface 12 is the same as that of a wing plate 3 of the U-rib; an adjusting bolt 13 is arranged on the model block 11, a threaded through hole is formed in the model block 11 and matched with the adjusting bolt 13, and a threaded hole matched with the adjusting bolt 13 is also formed in the partition plate 9; when the model block 11 is processed, the model block 11 needs to be put, the put length is r, so that when the model block 11 is installed in the clamping die 8, a larger gap is reserved between the model block contact surface 12 and the wing plate 3 of the U rib so as to accommodate the U rib with different deviation;
(3) According to the size and the installation interval of the U-shaped ribs, the diaphragm is firstly processed, and negative tolerance blanking is adopted for the width of the notch 5 of the diaphragm, and the specific method for blanking by the negative tolerance is as follows: the notch side wall 6 of the diaphragm plate extends outwards, and the extension length is d;
(4) Fixedly mounting a model block 11 in the clamping die 8, then buckling the clamping die 8 on the U rib, and enabling the clamping die 8 to coincide with the central line of the U rib; then, a model block 11 is used outside the clamping die 8, wherein a model block contact surface 12 is machined, and the close contact between the model block contact surface 12 and the wing plate 3 of the U rib is ensured; the method for drawing the line by using the model block 11 comprises the following steps: the contact surface 12 of the model block is closely attached to the wing plate 3 and is abutted against the model block 11 in the clamping die 8, then the line drawing is carried out by means of the surface far away from the wing plate 3, and the line drawing is parallel to the wing plate 3 and falls on the model block 11 in the clamping die 8; drawing lines on two sides of each U-shaped rib;
(5) Numbering each U rib, and measuring and recording the distance s between each drawing line and the contact surface 12 of the model block;
(6) By comparing the theoretical value S of S with the actual measured value S, the length X of the notch side wall 6 to be cut can be calculated;
(7) Drawing a diaphragm groove center line 17 in the diaphragm groove 5, aligning the diaphragm groove center line 17 with a U rib longitudinal center line 18, cutting the groove side wall 6 according to the calculated cutting length X, and processing a welding hole 7 of a corresponding specification to obtain a diaphragm closely matched with the U rib;
(8) And (3) clamping the diaphragm plate obtained in the step (7) on the U rib, and welding according to the design size of the fillet weld.
Example 2
A process method for precisely assembling U-shaped ribs and diaphragm plates comprises the following steps:
(1) According to the size and the interval of the U ribs, clamping dies 8 with different specifications are processed, the clamping dies 8 are formed by cutting aluminum plates in a linear mode, a plurality of parallel partition plates 9 are arranged on the clamping dies 8, and a plurality of handles 10 are arranged on the tops of the clamping dies 8;
(2) According to the size of the U-rib, machining a model block 11, wherein the shape of the model block 11 is a right trapezoid, the inclined surface of the model block 11 is a model block contact surface 12, and the inclination of the model block contact surface 12 is the same as that of a wing plate 3 of the U-rib; an adjusting bolt 13 is arranged on the model block 11, a threaded through hole is formed in the model block 11 and matched with the adjusting bolt 13, and a threaded hole matched with the adjusting bolt 13 is also formed in the partition plate 9; when the model block 11 is processed, the model block 11 needs to be put, the put length is r, so that when the model block 11 is installed in the clamping die 8, a larger gap is reserved between the model block contact surface 12 and the wing plate 3 of the U rib so as to accommodate the U rib with different deviation;
(3) According to the size and the installation interval of the U-shaped ribs, the diaphragm is firstly processed, and negative tolerance blanking is adopted for the width of the notch 5 of the diaphragm, and the specific method for blanking by the negative tolerance is as follows: the notch side wall 6 of the diaphragm plate extends outwards, and the extension length is d;
(4) Fixedly mounting a model block 11 in the clamping die 8, then buckling the clamping die 8 on the U rib, and enabling the clamping die 8 to coincide with the central line of the U rib; then a standard block 14 with a fixed width w is used outside the clamping die 8, and the standard block 14 is in a parallelogram shape; the standard block 14 is used in the following way: the wing plate 3 is closely attached to the standard block contact surface 15 and is abutted against the model block 11, and then the standard block line drawing surface 16 is used for drawing lines, and the line drawing is parallel to the wing plate 3 and falls on the model block 11; drawing lines on two sides of each U-shaped rib;
(5) Numbering each U rib, and measuring and recording the distance s between each drawing line and the contact surface 12 of the model block;
(6) By comparing the theoretical value S of S with the actual measured value S, the length X of the notch side wall 6 to be cut can be calculated;
(7) Drawing a diaphragm groove center line 17 in the diaphragm groove 5, aligning the diaphragm groove center line 17 with a U rib longitudinal center line 18, cutting the groove side wall 6 according to the calculated cutting length X, and processing a welding hole 7 of a corresponding specification to obtain a diaphragm closely matched with the U rib;
(8) And (3) clamping the diaphragm plate obtained in the step (7) on the U rib, and welding according to the design size of the fillet weld.
The calculation formula in the step (6) is as follows:
X＝d+(s-S+δ)/sin(α)
wherein X-is the cutting length of the side wall of the notch;
d-is the epitaxial length of the side wall of the notch;
s-is the actual measurement distance between the contact surface of the drawing line and the model block;
s-is the theoretical distance between the contact surface of the drawn line and the model block, and S=w-r;
delta-is the gap width between the wing plate and the slot side wall
Alpha-is the included angle between the wing plate and the steel plate;
w-is the width of the standard block;
r-is the length of the model block;
according to the technical method and the calculation formula, the diaphragm plate tightly matched with the U rib can be obtained by processing, and the target delta value can be set, so that the diaphragm plates with different acceptance standards can be processed.
In the field assembly, my department generally used to set the mold block put-in length r to 30mm and the slot sidewall extension length d to 10mm.
Compared with the embodiment 1, the application of the parallelogram standard block simplifies the line drawing process, makes the line drawing standard, and is helpful for further reducing line drawing errors, so that the calculated notch side wall cutting length X is more accurate.
In the on-site assembly process of the embodiment 1 and the embodiment 2, build-up welding is not needed, and the whole assembly only needs 1-2 hours of working hours to turn to the next working procedure; and the traditional technological method in the prior art is used, more U ribs and diaphragm plate notches need to be subjected to surfacing, the surfacing time is about 4 hours, flaw detection is needed to be carried out on the weld seam subsequently, the weld seam is matched and cut after the flaw detection is qualified, the working procedures are tightly matched, and the time is more than 1 day, so that the next working procedure can be changed.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A process method for precisely assembling U-shaped ribs and diaphragm plates is characterized in that: the process method comprises the following steps:
(1) According to the size and the interval of the U-shaped ribs, clamping molds with different specifications are processed, and a plurality of parallel partition plates are arranged on the clamping molds;
(2) According to the size of the U-shaped rib, machining a model block, wherein the shape of the model block is a right trapezoid, the inclined surface of the model block is a model block contact surface, and the inclination of the model block contact surface is the same as that of a wing plate of the U-shaped rib; when the model block is processed, the model block needs to be put, the put length is r, and when the model block is installed in the clamping die, a larger gap is reserved between the contact surface of the model block and the wing plate of the U-shaped rib so as to accommodate the U-shaped ribs with different deviations;
(3) According to the size and the installation interval of the U-shaped ribs, the diaphragm plate is processed for the first time, and negative tolerance blanking is adopted for the width of the notch of the diaphragm plate, and the specific method for blanking by the negative tolerance is as follows: the side wall of the notch of the diaphragm plate extends outwards, and the extension length is d;
(4) The mold block is fixedly arranged in the clamping mold, then the clamping mold is buckled on the U-shaped rib, and the clamping mold is overlapped with the central line of the U-shaped rib; and then a standard block with a fixed width w is used outside the clamping die, and the using method of the standard block is as follows: the wing plate is closely attached to the contact surface of the standard block, and is abutted against the model block at the same time, and then the standard block is used for drawing lines, and the drawing lines are parallel to the wing plate and fall on the model block; drawing lines on two sides of each U-shaped rib;
(5) Numbering each U rib, and measuring and recording the distance s between each drawing line and the contact surface of the model block;
(6) The length X of the side wall of the notch to be cut can be calculated by comparing the theoretical value S of S with the actual measured value S;
(7) Drawing a diaphragm plate notch center line in the diaphragm plate notch, aligning the diaphragm plate notch center line with the longitudinal center line of the U rib, cutting the side wall of the notch according to the calculated cutting length X, and processing a welding hole of a corresponding specification to obtain a diaphragm plate tightly matched with the U rib;
(8) And (3) clamping the diaphragm plate obtained in the step (7) on the U rib, and welding according to the design size of the fillet weld.
2. The process according to claim 1, characterized in that: machining the contact surface of the model block to ensure that the contact surface of the model block is closely adhered to the wing plate of the U-shaped rib; the model block processed by the method replaces the standard block to carry out line drawing operation.
3. The process according to claim 1, characterized in that: the clamping die is formed by cutting an aluminum plate through a wire, or by cutting carbon steel through plasma.
4. The process according to claim 1, characterized in that: and a plurality of handles are arranged at the top of the clamping die.
5. The process according to claim 1, characterized in that: the adjusting bolt is arranged on the model block, a threaded through hole is formed in the model block and matched with the adjusting bolt, and a threaded hole matched with the adjusting bolt is also formed in the partition plate.
6. The process according to claim 1, characterized in that: the standard block is in the shape of a parallelogram.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210046374.1A CN114319133B (en) | 2022-01-15 | 2022-01-15 | Process method for precisely assembling U-shaped ribs and diaphragm plates |
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| CN202210046374.1A CN114319133B (en) | 2022-01-15 | 2022-01-15 | Process method for precisely assembling U-shaped ribs and diaphragm plates |
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| CN114319133B true CN114319133B (en) | 2023-05-09 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101198200B1 (en) * | 2009-10-30 | 2012-11-07 | 고려대학교 산학협력단 | Orthotropic steel bridge deck with improved fatigue strength having UHPC pavement and polyurethane foam tamping and constructing method of the same |
| KR101143056B1 (en) * | 2009-12-31 | 2012-05-08 | 재단법인 포항산업과학연구원 | A Knockdown Bridge And Constructing Method of The Same |
| DE102013114532B4 (en) * | 2013-12-19 | 2019-02-21 | SEH Engineering GmbH | Device and method for producing an orthotropic carrier plate and orthotropic carrier plate |
| CN206854823U (en) * | 2017-09-14 | 2018-01-09 | 武汉天高熔接股份有限公司 | Long-lived Orthotropic Steel Bridge Deck is remained silent the fabricating tools of rib |
| CN108677719A (en) * | 2018-05-18 | 2018-10-19 | 中铁山桥集团有限公司 | A kind of control method of partition board notch and U-shaped intercostal assembly clearance |
| CN109208473B (en) * | 2018-10-12 | 2024-03-22 | 湖南省交通规划勘察设计院有限公司 | Combined bridge deck structure stiffened by adopting flat-bulb steel, construction method thereof and bridge structure |
| CN111663453A (en) * | 2020-06-24 | 2020-09-15 | 中铁九桥工程有限公司 | Curved U-shaped rib assembling device and method |
| CN214061269U (en) * | 2020-10-23 | 2021-08-27 | 靖江市中元钢构有限公司 | Steel bridge U-shaped rib with structure convenient for rapid assembly |
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