CN113047153A - Method for manufacturing all-welded U-shaped steel structure aqueduct - Google Patents
Method for manufacturing all-welded U-shaped steel structure aqueduct Download PDFInfo
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- CN113047153A CN113047153A CN202110176245.XA CN202110176245A CN113047153A CN 113047153 A CN113047153 A CN 113047153A CN 202110176245 A CN202110176245 A CN 202110176245A CN 113047153 A CN113047153 A CN 113047153A
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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
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/005—Canals entirely situated above ground level, e.g. on piers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for manufacturing an all-welded U-shaped steel structure aqueduct, which comprises the following specific steps: dividing the steel structure aqueduct into a main truss and a water tank which are respectively processed and manufactured in a factory; the main truss is divided into an upper chord member, a lower chord member (arch rib) and a web member unit according to the length of two sections or a plurality of sections, the unit members of the sections are manufactured in a professional factory, the upper chord member, the lower chord member (arch rib) and the web member unit are continuously matched and trial-assembled with adjacent sections on a trial-assembly platform in a field temporary processing factory, and the web member and the lower chord member or the arch rib unit member are welded into a whole to form a composite hoisting unit; the water tank is divided into a water tank bottom plate unit and a water tank wall plate unit, the large unit units of the segments are manufactured in a factory, the large unit units of the segments are assembled with adjacent segments in a continuous matching and trial assembly mode on a factory trial assembly jig frame, sand blasting coating is carried out on the outer surface, and after primer intermediate paint and first finish paint are coated, the water tank is transported to the site. The invention improves the operation efficiency of site construction and the durability of the bridge.
Description
Technical Field
The invention belongs to the field of hydraulic engineering construction, and particularly relates to a method for manufacturing an all-welded U-shaped steel structure aqueduct.
Background
The main construction methods of the existing steel truss girder comprise a loose splicing mode, a truss piece erecting mode and a whole section integral erecting mode, but the methods adopt a large number of high-strength bolts for connection on site, and have higher requirements on transportation conditions and installation equipment. With the increase of span, the assembling and welding workload of the scattered assembling type installation construction site is very large, the construction period is longer, the requirements on transportation equipment and hoisting are higher for a truss type or whole-section installation method, the manufacturing cost is higher, and the method is mostly applied to river-crossing engineering with water transportation conditions. The steel aqueduct project of the total canal of the Yangjihuai river Y and the river belongs to a construction scheme of artificially excavating the river into a river, has no water transportation condition, synchronously excavates the river channel and constructs the aqueduct, can not meet the requirement of the construction period of the site by adopting the conventional construction methods, and simultaneously increases the safety risk of the site construction process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for manufacturing an all-welded U-shaped steel structure aqueduct.
The specific technical scheme of the invention is as follows:
a manufacturing method of an all-welded U-shaped steel structure aqueduct comprises the following steps:
1) according to the installation sequence of the on-site groove positions, dividing the steel structure aqueduct into an outer main truss and an inner U-shaped water tank which are respectively processed and manufactured;
2) factory processing of the main truss and the U-shaped water tank:
manufacturing a main truss: respectively manufacturing an arch chord member, a lower chord member, an upper chord member, a web member and a transverse connecting system of the main truss;
manufacturing a U-shaped water tank: the U-shaped water tank comprises a water tank bottom plate and a water tank wall plate, the water tank bottom plate and the water tank wall plate are correspondingly manufactured respectively, and continuous matching pre-assembly is carried out;
performing sand blasting and rust removal on the arch chord member, the lower chord member, the upper chord member, the web member, the transverse connecting system, the water tank bottom plate and the water tank wall plate, coating primer, intermediate paint and first finish paint, and protecting an on-site welding seam part by using kraft paper adhesive tapes;
3) assembling a main truss in a trial mode: pre-assembling the manufactured arch chord member, the manufactured lower chord member, the manufactured upper chord member and the manufactured web member, performing matching trial assembly on an outer main truss on a special jig, and welding the web member unit and the arch chord member into a whole and welding the web member and the lower chord member into a whole;
4) groove installation and welding: according to a preset installation method, installing from the side spans at two sides to the middle main span, and for the flat string part: firstly, installing and positioning lower chord units and/or arch chord units on two sides, then installing a water tank bottom plate in the middle, and welding the lower chord units and the water tank bottom plate into a whole; installing a water tank wall plate, finally installing an upper chord, and welding the water tank wall plate and the upper chord; the installation sequence for the archwire region is: firstly, installing an arch string unit 1, then installing a lower parallel connection system and a transverse connection system, welding a welding seam between the transverse connection system and an arch string rod, then installing a lower chord rod, and executing the installation process of installing a flat string part on the rest part;
5) coating finish paint at the last time of the groove position: and after the slot steel structure is installed, repairing the paint damage and the welding seam area of the slot, and finally spraying second finish paint to finish the construction of the steel structure aqueduct.
Preferably, the arch chord, the lower chord, the upper chord, the web member, and the transverse connection system of the main truss are manufactured in a factory.
As a preferred technical scheme, the U-shaped water tank comprises a water tank bottom plate and a water tank wall plate which are respectively manufactured correspondingly, and continuous matching pre-assembly is carried out in a factory.
As a preferred technical scheme, the sand blasting rust removal is finished in a factory.
As the preferred technical scheme, the main truss is assembled on the construction site in a trial mode.
Has the advantages that:
according to the invention, the steel structure aqueduct is divided into the outer main truss and the inner U-shaped water tank, a large-section hoisting unit is separately manufactured, and is continuously matched, assembled in a trial way in a factory or on site and then transported to the groove position to be installed and welded in place, compared with the traditional construction method, the hoisting unit is less, the operation efficiency of site construction and the durability of the bridge are improved, the welding workload of the groove position is reduced, the difficulty of the site high-altitude operation is reduced, and the construction period is prolonged; beautiful appearance and good durability.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
FIG. 3 is a diagram of the application state of the present invention in the steel aqueduct engineering of the leading river and the Huai river.
Fig. 4 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, 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.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention will now be further described with reference to the accompanying drawings.
The embodiment of the invention relates to a method for manufacturing an all-welded U-shaped steel structure aqueduct, which comprises the following steps: dividing the steel structure aqueduct into a main truss and a water tank which are respectively processed and manufactured in a factory; the main truss is divided into an upper chord member, a lower chord member (arch rib) and a web member unit according to the length of two sections or a plurality of sections, the unit members of the sections are manufactured in a professional factory, the upper chord member, the lower chord member (arch rib) and the web member unit are continuously matched and trial-assembled with adjacent sections on a trial-assembly platform in a field temporary processing factory, and the web member and the lower chord member or the arch rib unit member are welded into a whole to form a composite hoisting unit; the water tank is divided into a water tank bottom plate unit and a water tank wall plate unit, the large unit units of the segments are manufactured in a factory, the large unit units of the segments are assembled with adjacent segments in a continuous matching and trial assembly mode on a factory trial assembly jig frame, sand blasting coating is carried out on the outer surface, and after primer intermediate paint and first finish paint are coated, the water tank is transported to the site. In the trench, a support method is adopted, a large-tonnage crawler crane is matched according to the steps that a lower chord (arch rib) composite hoisting unit is installed firstly, then a water tank bottom plate unit is hoisted and welded, a water tank wall plate unit is installed, finally a chord is installed and the construction sequence is welded, the installation is carried out from two side spans to a mid-span symmetrically, the closure is carried out in the mid-span, and the trench is connected into a whole by adopting a welding connection mode to complete the construction of the steel structure aqueduct.
Particularly, the invention is a construction method of a brand new steel structure aqueduct, which has the advantages of simple and convenient construction, high technical content, cost saving, simple structural connection and low safety risk. Referring to fig. 1 to 4, the specific steps are as follows:
1) according to the installation sequence of the on-site groove positions, dividing the steel structure aqueduct into an outer main truss and an inner U-shaped water tank which are respectively processed and manufactured in a factory;
2) factory processing of the main truss and the U-shaped water tank:
manufacturing a main truss: respectively manufacturing an arch chord 1, a lower chord 2, an upper chord 3, web members 4 and 5 and transverse connecting systems 8 and 9 of a main truss in a factory;
manufacturing a U-shaped water tank: dividing the water tank into a water tank bottom plate 6 and a water tank wall plate 7, respectively manufacturing a water tank bottom plate unit and a water tank wall plate unit, and continuously matching and pre-assembling on a special jig frame of a factory;
sand blasting and rust removal are finished in a factory, primer, intermediate paint and first finish paint are coated, and kraft paper adhesive tapes are adopted for protecting on-site welding seam parts;
3) assembling a main truss in a trial mode: the method comprises the following steps that an arch chord unit 1, a lower chord unit 2, an upper chord unit 3 and web members 4 and 5 which are manufactured in a factory are temporarily pre-assembled on site by automobile transportation, matching trial assembly is carried out on an outer main truss on a special jig, the web members and the arch chord unit are welded into a whole 10, and the web members and the lower chord unit are welded into a whole 11;
4) groove installation and welding: according to a preset installation method, installing from the side spans at two sides to the middle main span, and for the flat string part: firstly, the lower chord units 2 (arch chord units 1) on two sides are installed and positioned, then the middle water tank bottom plate unit 6 is installed, and the lower chord and the water tank bottom plate unit are welded into a whole; installing a water tank wall plate unit 7, finally installing an upper chord unit 3, and welding the water tank wall plate and the upper chord unit; the installation sequence for the archwire region is: firstly, installing the arch string unit 1, then installing the lower parallel connection and transverse connection system 9, welding the welding seam between the transverse connection system and the arch string rod, then installing the lower chord unit 2, and installing the flat string part on the rest part.
5) Coating finish paint at the last time of the groove position: and after the slot steel structure is installed, repairing the paint damage and the welding seam area of the slot, and finally spraying second finish paint to finish the construction of the steel structure aqueduct.
6) The invention discloses a method for manufacturing a totally welded U-shaped steel aqueduct, which is successfully applied to a steel aqueduct project of a general canal of a river leading a river and a Chinese yam.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (5)
1. A manufacturing method of an all-welded U-shaped steel structure aqueduct is characterized in that: the method comprises the following steps:
1) according to the installation sequence of the on-site groove positions, dividing the steel structure aqueduct into an outer main truss and an inner U-shaped water tank which are respectively processed and manufactured;
2) factory processing of the main truss and the U-shaped water tank:
manufacturing a main truss: respectively manufacturing an arch chord member, a lower chord member, an upper chord member, a web member and a transverse connecting system of the main truss;
manufacturing a U-shaped water tank: the U-shaped water tank comprises a water tank bottom plate and a water tank wall plate, the water tank bottom plate and the water tank wall plate are correspondingly manufactured respectively, and continuous matching pre-assembly is carried out;
performing sand blasting and rust removal on the arch chord member, the lower chord member, the upper chord member, the web member, the transverse connecting system, the water tank bottom plate and the water tank wall plate, coating primer, intermediate paint and first finish paint, and protecting an on-site welding seam part by using kraft paper adhesive tapes;
3) assembling a main truss in a trial mode: pre-assembling the manufactured arch chord member, the manufactured lower chord member, the manufactured upper chord member and the manufactured web member, performing matching trial assembly on an outer main truss on a special jig, and welding the web member unit and the arch chord member into a whole and welding the web member and the lower chord member into a whole;
4) groove installation and welding: according to a preset installation method, installing from the side spans at two sides to the middle main span, and for the flat string part: firstly, installing and positioning lower chord units and/or arch chord units on two sides, then installing a water tank bottom plate in the middle, and welding the lower chord units and the water tank bottom plate into a whole; installing a water tank wall plate, finally installing an upper chord, and welding the water tank wall plate and the upper chord; the installation sequence for the archwire region is: firstly, installing an arch string unit 1, then installing a lower parallel connection system and a transverse connection system, welding a welding seam between the transverse connection system and an arch string rod, then installing a lower chord rod, and executing the installation process of installing a flat string part on the rest part;
5) coating finish paint at the last time of the groove position: and after the slot steel structure is installed, repairing the paint damage and the welding seam area of the slot, and finally spraying second finish paint to finish the construction of the steel structure aqueduct.
2. The manufacturing method of the all-welded U-shaped steel structure aqueduct as claimed in claim 1, wherein the manufacturing method comprises the following steps: the arch chord, the lower chord, the upper chord, the web member and the transverse connecting system of the main truss are respectively manufactured in a factory.
3. The manufacturing method of the all-welded U-shaped steel structure aqueduct as claimed in claim 1, wherein the manufacturing method comprises the following steps: the U-shaped water tank is divided into a water tank bottom plate and a water tank wall plate, the water tank bottom plate and the water tank wall plate are manufactured correspondingly and respectively, and continuous matching and pre-assembling are carried out in a factory.
4. The manufacturing method of the all-welded U-shaped steel structure aqueduct as claimed in claim 1, wherein the manufacturing method comprises the following steps: and (4) finishing sand blasting and rust removing in a factory.
5. The manufacturing method of the all-welded U-shaped steel structure aqueduct as claimed in claim 1, wherein the manufacturing method comprises the following steps: and (4) trial assembly of the main truss on a construction site.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176245.XA CN113047153A (en) | 2021-02-07 | 2021-02-07 | Method for manufacturing all-welded U-shaped steel structure aqueduct |
| GB2118016.1A GB2604016A (en) | 2021-02-07 | 2021-12-13 | Manufacture method of all-welded U-shaped steel structure aqueduct |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110176245.XA CN113047153A (en) | 2021-02-07 | 2021-02-07 | Method for manufacturing all-welded U-shaped steel structure aqueduct |
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| CN113047153A true CN113047153A (en) | 2021-06-29 |
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| CN202110176245.XA Pending CN113047153A (en) | 2021-02-07 | 2021-02-07 | Method for manufacturing all-welded U-shaped steel structure aqueduct |
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| GB (1) | GB2604016A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084261A (en) * | 2023-01-05 | 2023-05-09 | 安徽省交通规划设计研究总院股份有限公司 | Seamless self-telescopic aqueduct and construction method |
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| CN116084261B (en) * | 2023-01-05 | 2023-10-20 | 安徽省交通规划设计研究总院股份有限公司 | Seamless self-telescopic aqueduct and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2604016A (en) | 2022-08-24 |
| GB202118016D0 (en) | 2022-01-26 |
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