CN111644818B - Manufacturing method of high-precision hollow steel tower steel anchor box - Google Patents
Manufacturing method of high-precision hollow steel tower steel anchor box Download PDFInfo
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- CN111644818B CN111644818B CN202010545039.7A CN202010545039A CN111644818B CN 111644818 B CN111644818 B CN 111644818B CN 202010545039 A CN202010545039 A CN 202010545039A CN 111644818 B CN111644818 B CN 111644818B
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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
- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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Abstract
The invention relates to a manufacturing method of a high-precision hollow steel tower and steel anchor box, which comprises a part processing construction method and a steel anchor box assembling construction method, wherein a steel tower wall plate controls the size and the shape of an anchor rod hole by adjusting a numerical control cutting angle. The rest wall plates are made by a method of breaking the upper and lower cover plates of the anchor box by T-shaped stiffening. The position of the steel anchor box is controlled by adopting an assembly welding method of firstly hiding and then opening the steel anchor box from the inside to the outside. The invention has the beneficial effects that: the manufacturing precision is improved, and the mounting position is ensured to be accurate; the center positions of the anchor box and the anchor beam sleeve are ensured to be accurate; the construction difficulty is reduced, the production efficiency is improved, and the economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of steel bridge manufacturing engineering, in particular to a manufacturing method of a high-precision hollow steel tower steel anchor box.
Background
Along with the rapid development of Chinese economy, the national infrastructure enters a large development stage, and steel structure bridges are various in form, particularly river-crossing and viaduct bridges are more and more. Along with the continuous progress of building materials, construction technology and design theory, the large-span hollow-out type steel tower cable-stayed bridge has the advantages of attractive appearance, large span and the like. The steel tower anchor box segment is processed in a factory by relying on the manufacturing process of the hollow-out steel tower, and is transported to the site for hoisting operation, the assembling precision and the accurate positioning of the anchor box are key and difficult points for control, a whole set of effective and practical manufacturing method is provided for the requirements of assembling and mounting precision, the manufacturing and positioning precision can be improved, the working efficiency can be improved, and the construction cost can be reduced.
Disclosure of Invention
The invention aims to provide a manufacturing method of a high-precision hollow steel tower steel anchor box, which solves the problem of high requirements on manufacturing and hoisting precision of the steel anchor box, improves the working efficiency, reduces the construction cost and improves the economic benefit.
The invention provides a manufacturing method of a high-precision hollow steel tower steel anchor box, which is realized by the following technical scheme:
a manufacturing method of a high-precision hollow steel tower steel anchor box comprises a part processing construction method and a steel anchor box assembling construction method, wherein,
the part processing method comprises the following steps:
controlling the precision of the wallboard: t-shaped stiffening of the wall plate is made into an I-shaped unit, 5mm cutting amount is reserved during blanking, and T ribs are assembled at corresponding positions of the wall plate on an assembly welding platform, so that perpendicularity is guaranteed, and deformation is controlled;
controlling the precision of the anchor box sleeve: the anchor box and the anchor beam sleeve are disconnected inside and outside the steel tower wall plate, the straightness of the sleeve is guaranteed to meet the requirements, and two ends of the sleeve are machined to guarantee that the sleeve is closely attached to the wall plate and welded with the wall plate;
controlling the precision of the web plate of the anchor box: finely cutting and blanking the anchor web plate, adding machining amount of 5mm to the length of the anchor web plate, and reinforcing and welding the assembled sleeve after ensuring that the flatness meets the requirement;
controlling the precision of the partition plate at the position of the steel anchor box: the baffle at the position of the anchor box is disconnected at the positions of the upper cover plate and the lower cover plate of the anchor box, and an inclined opening is formed at the position of the contact surface to ensure that the baffle is closely attached to the upper cover plate and the lower cover plate. The welding edges of the partition plate and the wall plate are reserved with machining amount of 5mm, so that the close adhesion of the partition plate and the wall plate of the anchor box is ensured;
the steel anchor box assembling method comprises the following steps:
laying the wall plate units on a leveling assembly welding platform, performing spot welding with the platform, assembling a large partition plate, an anchor box lower cover plate and an inner side partition plate according to an assembly line, assembling the anchor box inner side partition plate and an upper cover plate of an anchor box according to a line, assembling another wall plate unit according to a line, welding the upper cover plate and the lower cover plate of the anchor box and a welding seam of the other wall plate unit, and welding the inner side partition plate of the anchor box and the welding seams of the upper cover plate and the lower cover plate of the anchor box and the welding seam of the other wall plate unit;
assembling a web plate unit in the anchor box: welding the web plate unit and the wall plate unit in the anchor box and welding seams of the upper cover plate and the lower cover plate;
the upper cover plate of the assembly anchor box is stiffened, the lower cover plate is stiffened and the middle partition plate is arranged: welding the upper cover plate stiffening and lower cover plate stiffening of the anchor box and welding seams of the upper cover plate, the lower cover plate and the wall plate unit;
assembling an outer web plate unit and an outer side partition plate of the anchor box: welding seams between the outer web plate unit of the anchor box and the wall plate unit, the upper cover plate and the lower cover plate;
assembling the outer side wall plate unit: welding the welding seams of the outer side partition plates and the outer side wall plate units of the upper cover plate and the lower cover plate of the anchor box;
comprehensively finishing the flatness of an upper cover plate, a lower cover plate and a web plate of the anchor box, and coating hidden positions;
assembling the outer side wall plate unit: welding seams between the outer side wall plate partition plate and the wall plate units on the periphery, penetrating a sleeve into the box body according to holes, polishing and jacking the sleeve with the wall plate units, welding stiffening the outer side of the sleeve and the welding seams of the wall plate, adjusting the relative position of the sleeve, welding the sleeve and the welding seams of the wall plate on the outer side of the wall plate, and polishing uniformly;
and (3) integrally finishing, controlling box distortion, side bending, wall plate flatness and box diagonal difference, cutting off redundant parts of the wall plate according to the elevation data of the steel tower reflected on site, ensuring that the wall plate is consistent with the designed elevation, and performing coating work after the whole process is finished.
The invention has the beneficial effects that:
1. the manufacturing precision is improved, and the mounting position is ensured to be accurate;
2. the center positions of the anchor box and the anchor beam sleeve are ensured to be accurate;
3. the construction difficulty is reduced, the production efficiency is improved, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic view of the T-rib section assembly welding of the present invention;
FIG. 2 is a schematic view of a steel anchor box assembling method (i) - (iv);
FIG. 3 is a schematic view of a steel anchor box assembly method, a fifth step and a sixth step;
FIG. 4 is a schematic view of steel anchor box assembly method ninthly-hole;
FIG. 5 is a model diagram of a steel anchor beam and a steel anchor box;
FIG. 6 is a perspective view of FIG. 5;
FIG. 7 is a partial schematic view of FIG. 5;
fig. 8 is an effect view of an assembly sequence of the anchor boxes.
The labels in the figure are: the wall plate unit comprises a wall plate unit 1, a large partition plate 2, a lower cover plate 3, an upper cover plate 4, an inner side partition plate 5, a middle partition plate 6, an inner web plate unit 7, an upper cover plate stiffening 8, a lower cover plate stiffening 9, an outer web plate unit 10, an outer side partition plate 11, an outer side wall plate partition plate 12 and a sleeve 13.
Detailed Description
The technical solutions of the present invention will be described clearly and completely by the following embodiments, 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.
A method for manufacturing a high-precision hollow steel tower steel anchor box is disclosed, wherein the size and the shape of an anchor rod hole are controlled by adjusting a numerical control cutting angle of a steel tower wall plate. The rest wall plates are made by a method of breaking the upper and lower cover plates of the anchor box by T-shaped stiffening. The position of the steel anchor box is controlled by adopting an assembly welding method of firstly hiding and then opening the steel anchor box from the inside to the outside.
Comprises a part processing method and a steel anchor box assembling method, wherein,
the part processing method comprises the following steps:
controlling the precision of the wallboard: as shown in figure 1, T-shaped stiffening of the wall plate is made into an I-shaped unit, namely a wall plate unit, 5mm cutting amount is reserved during blanking, and T ribs are assembled at corresponding positions of the wall plate on an assembly welding platform, so that perpendicularity is ensured, and deformation is controlled;
controlling the precision of the anchor box sleeve: the anchor box and the anchor beam sleeve are disconnected inside and outside the steel tower wall plate, the straightness of the sleeve is guaranteed to meet the requirements, and two ends of the sleeve are machined to guarantee that the sleeve is closely attached to the wall plate and welded with the wall plate;
controlling the precision of the web plate of the anchor box: finely cutting and blanking the anchor web plate, adding machining amount of 5mm to the length of the anchor web plate, and reinforcing and welding the assembled sleeve after ensuring that the flatness meets the requirement;
controlling the precision of the partition plate at the position of the steel anchor box: the baffle at the position of the anchor box is disconnected at the positions of the upper cover plate and the lower cover plate of the anchor box, and an inclined opening is formed in the position of the contact surface, so that the baffle is ensured to be closely attached to the upper cover plate and the lower cover plate. The welding edges of the partition plate and the wall plate are reserved with machining amount of 5mm, so that the close adhesion of the partition plate and the wall plate of the anchor box is ensured;
as shown in fig. 2 to 7, the steel anchor box assembling method includes:
laying the wallboard unit 1 on a leveling assembly welding platform, performing spot welding with the platform, assembling a large partition plate 2, an anchor box lower cover plate 3 and an inner side partition plate 5 according to an assembly line, assembling the anchor box inner side partition plate 5 and an anchor box upper cover plate 4 according to the line, assembling another wallboard unit 1 according to the line, welding the anchor box upper cover plate 4, the lower cover plate 3 and a welding seam of the wallboard unit 1, and welding the anchor box inner side partition plate 5 and the welding seam of the anchor box upper cover plate 4, the lower cover plate 3 and the wallboard unit 1;
assembling a web plate unit 7 in the anchor box: welding seams of a web plate unit 7 and a wall plate unit 1 in the anchor box, an upper cover plate 4 and a lower cover plate 3 are welded;
the upper cover plate of the assembly anchor box is stiffened by 8, the lower cover plate is stiffened by 9 and the middle partition plate 6 are assembled: welding the upper cover plate stiffening 8 and the lower cover plate stiffening 9 of the anchor box with the welding seams of the upper cover plate 4, the lower cover plate 3 and the wallboard unit 1;
assembling an outer web plate unit 10 and an outer side partition plate 11 of the anchor box: welding seams between the anchor box outer web plate unit 10 and the wall plate unit 1, the upper cover plate 4 and the lower cover plate 3 are welded;
assembling the outer side wall plate unit: welding seams between the outer side partition plates of the upper cover plate 4 and the lower cover plate 3 of the anchor box and the outer side wall plate unit 1 are welded;
comprehensively finishing the flatness of an upper cover plate 4, a lower cover plate 3 and a web plate of the anchor box, and coating hidden positions;
assembling the outer side wall panel unit 1: welding the welding seams of the outer side wall plate partition plate 12 of the outer side wall plate and the peripheral wall plate unit 1, penetrating a sleeve 13 into the box body according to holes, polishing and jacking the sleeve 13 and the wall plate unit 1 tightly, welding the welding seams of stiffening and wall plates on the outer side of the sleeve 13, adjusting the relative position of the sleeve 13, welding the sleeve and the welding seams of the wall plates on the outer side of the wall plates, and polishing uniformly;
and (3) integral finishing: controlling the box-shaped distortion, side bending, wall plate flatness and box-shaped diagonal difference, cutting off the redundant part of the wall plate according to the elevation data of the steel tower reflected on site, ensuring the wall plate to be consistent with the designed elevation, and performing coating work after the whole process is finished.
The effect of the anchor box assembly sequence is shown in figure 8.
The above examples are merely illustrative of embodiments of the present invention, which are described in more detail and detail, and should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. A manufacturing method of a high-precision hollow steel tower steel anchor box is characterized by comprising a part processing construction method and a steel anchor box assembling construction method, wherein,
the part processing method comprises the following steps:
controlling the precision of the wallboard: t-shaped stiffening of the wall plate is made into an I-shaped unit, a certain cutting amount is reserved during blanking, and T ribs are assembled at corresponding positions of the wall plate on an assembly welding platform, so that perpendicularity is guaranteed, and deformation is controlled;
controlling the precision of the anchor box sleeve: the anchor box and the anchor beam sleeve are disconnected inside and outside the steel tower wall plate, the straightness of the sleeve is guaranteed to meet the requirements, and two ends of the sleeve are machined to guarantee that the sleeve is closely attached to the wall plate and welded with the wall plate;
controlling the precision of the web plate of the anchor box: finely cutting and blanking the anchor web plate, adding a certain machining amount to the length of the anchor web plate, and after ensuring that the planeness meets the requirement, reinforcing the assembled sleeve and welding the assembled sleeve;
controlling the precision of the partition plate at the position of the steel anchor box: the baffle at the position of the anchor box is disconnected at the positions of the upper cover plate and the lower cover plate of the anchor box, and an inclined opening is formed at the position of a contact surface to ensure that the baffle is closely attached to the upper cover plate and the lower cover plate; certain machining amount is reserved on the welding edges of the partition plate and the wall plate to ensure the close adhesion of the partition plate and the wall plate of the anchor box;
the steel anchor box assembling method comprises the following steps:
laying the wall plate units on a leveling assembly welding platform, performing spot welding with the platform, assembling a large partition plate, an anchor box lower cover plate and an inner side partition plate according to an assembly line, assembling the anchor box inner side partition plate and an upper cover plate of an anchor box according to a line, assembling another wall plate unit according to a line, welding the upper cover plate and the lower cover plate of the anchor box and a welding seam of the other wall plate unit, and welding the inner side partition plate of the anchor box and the welding seams of the upper cover plate and the lower cover plate of the anchor box and the welding seam of the other wall plate unit;
assembling a web plate unit in the anchor box: welding the web plate unit and the wall plate unit in the anchor box and welding seams of the upper cover plate and the lower cover plate;
the upper cover plate of the assembly anchor box is stiffened, the lower cover plate is stiffened and the middle partition plate is arranged: welding the upper cover plate stiffening and lower cover plate stiffening of the anchor box and welding seams of the upper cover plate, the lower cover plate and the wall plate unit;
assembling an outer web plate unit and an outer side partition plate of the anchor box: welding seams between the outer web plate unit of the anchor box and the wall plate unit, the upper cover plate and the lower cover plate;
assembling the outer side wall plate unit: welding the welding seams of the outer side partition plates and the outer side wall plate units of the upper cover plate and the lower cover plate of the anchor box;
comprehensively finishing the flatness of an upper cover plate, a lower cover plate and a web plate of the anchor box, and coating hidden positions;
assembling the outer side wall plate unit: welding the outer side wall plate partition plate and the welding seams of the wall plate units around, penetrating the sleeve into the box body according to the holes, polishing and jacking the sleeve with the wall plate units, welding the outer side of the sleeve and stiffening the welding seams of the wall plate, adjusting the relative position of the sleeve, welding the sleeve and the welding seams of the wall plate outside the wall plate, and polishing uniformly.
2. The manufacturing method of the high-precision hollowed-out steel tower steel anchor box according to claim 1, wherein in the wall plate precision control, the reserved cutting amount is 5mm in blanking.
3. The manufacturing method of the high-precision hollow-out steel tower steel anchor box according to claim 1, wherein the length of the anchor web plate is increased by 5mm machining amount during fine cutting and blanking.
4. The manufacturing method of the high-precision hollow-out steel tower steel anchor box according to claim 1, wherein 5mm machining amount is reserved on the welding edges of the outer side wall plate partition plate and the wall plate.
5. The method for manufacturing the high-precision hollow-out steel tower and steel anchor box according to claim 1, further comprising the following steps of integrally finishing the steel anchor box: controlling the box-shaped distortion, side bending, wall plate flatness and box-shaped diagonal difference, cutting off the redundant part of the wall plate according to the elevation data of the steel tower reflected on site, ensuring the wall plate to be consistent with the designed elevation, and performing coating work after the whole process is finished.
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| CN202010545039.7A CN111644818B (en) | 2020-06-15 | 2020-06-15 | Manufacturing method of high-precision hollow steel tower steel anchor box |
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| CN202010545039.7A CN111644818B (en) | 2020-06-15 | 2020-06-15 | Manufacturing method of high-precision hollow steel tower steel anchor box |
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| CN101967795B (en) * | 2010-10-21 | 2011-11-30 | 中铁大桥勘测设计院有限公司 | Novel built-in cable-truss anchoring structure and construction method thereof |
| CN103437284B (en) * | 2012-11-14 | 2016-12-21 | 中铁九桥工程有限公司 | A kind of parallelogram section rod member anchor case localization method |
| CN102912721B (en) * | 2012-11-21 | 2014-11-12 | 中铁第四勘察设计院集团有限公司 | Double-outrigger type cable beam anchoring structure of bridge steel box girder |
| CN103639671B (en) * | 2013-12-19 | 2017-01-11 | 贵州力宏钢结构有限公司 | Manufacturing method of steel structure box girder |
| CN103934631B (en) * | 2013-12-31 | 2016-09-28 | 中铁四局集团钢结构有限公司 | A kind of large-scale cable support tower steel anchor box processing method |
| 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 |
| CN107201718B (en) * | 2016-03-16 | 2018-10-16 | 中铁十五局集团有限公司 | Preparation method of main longitudinal beam of steel bridge |
| CN106049279B (en) * | 2016-07-27 | 2017-11-17 | 上海市城市建设设计研究总院（集团）有限公司 | Inhaul cable anchorage structure in steel box-girder |
| CN108098264B (en) * | 2017-11-28 | 2019-10-18 | 江苏中铁山桥重工有限公司 | A kind of manufacturing method of multimode stage construction bolt anchoring beam |
| CN209686235U (en) * | 2019-03-06 | 2019-11-26 | 西安市政设计研究院有限公司 | A kind of double anchor web cable-stayed bridge steel cable anchor systems |
| CN110170799B (en) * | 2019-06-04 | 2020-12-11 | 上海绿地建筑钢结构有限公司 | Steel box girder manufacturing process |
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