阅读说明：本技术 一种锚拉板索梁锚固结构焊接方法 (Welding method for anchoring structure of anchor plate cable beam ) 是由 昌林叶 邓其明 龚海涛 于 2021-09-27 设计创作，主要内容包括：一种锚拉板索梁锚固结构焊接方法,涉及焊接方法领域。锚拉板索梁锚固结构焊接方法是将锚拉板加劲肋点焊固定于锚拉板,将锚拉板和对应的锚拉板加劲肋焊接固定于钢箱梁,在锚管的两端分别装配并焊接端板,将锚管和端板装配于锚拉板和锚拉板加劲肋并焊接固定；在锚管的两端分别装配并焊接端板时,依次采用氩弧焊单面焊双面成形、埋弧焊剂和二氧化碳气体保护焊焊接；将锚管和端板装配于锚拉板并焊接固定时,依次使用双面氩弧焊打底焊接、二氧化碳气体保护焊和药芯焊丝焊接和焊接小车带动CO-(2)保护焊枪施焊。本实施例提供的锚拉板索梁锚固结构焊接方法减少了热输入和易产生剥离裂纹的缺陷,并减少了焊接变形问题。(A welding method for an anchor structure of a cable beam of an anchor pulling plate relates to the field of welding methods. The welding method of the anchor plate cable beam anchoring structure comprises the steps of fixing anchor plate stiffening ribs to an anchor plate in a spot welding mode, fixing the anchor plate and the corresponding anchor plate stiffening ribs to a steel box beam in a welding mode, respectively assembling and welding end plates at two ends of an anchor pipe, assembling the anchor pipe and the end plates to the anchor plate and the anchor plate stiffening ribs and fixing the anchor pipe and the anchor plate stiffening ribs in a welding mode; when the two ends of the anchor pipe are respectively assembled and welded with the end plates, argon arc welding single-side welding double-side forming, submerged arc welding flux and carbon dioxide arc welding are adopted in sequence; when the anchor pipe and the end plate are assembled on the anchor pull plate and welded and fixed, the double-sided argon arc welding backing welding, the carbon dioxide gas shielded welding and the flux-cored wire welding are sequentially used, and the welding trolley drives the CO 2 And (5) welding by a shielded welding gun. The anchor pulling plate cable beam anchoring structure provided by the embodiment is weldedThe method reduces the defects of heat input and easy generation of stripping cracks, and reduces the welding deformation problem.)

1. A welding method for an anchor structure of an anchor plate cable beam comprises the following steps: the method is characterized in that when the two ends of the anchor pipe are respectively assembled and welded with the end plates, the argon arc welding single-side welding double-side forming method is adopted for backing welding, and the welding method of combining submerged arc welding flux with carbon dioxide gas shielded welding is adopted for filling the cover surface; when the anchor pipe and the end plate are assembled on the anchor pull plate and welded and fixed, two argon arc welding guns are used for backing welding by adopting double-sided argon arc welding with the same welding parameters and welding speed, carbon dioxide gas shielded welding and flux-cored wire are used for filling welding, and when the cover surface is welded, the welding trolley is used for driving CO to drive the welding trolley₂Protecting the welding gun to weld, and taking off CO during welding₂Protecting the protective sleeve on the welding gun to expose the contact tip and to expose CO₂The welding wire on the protective welding gun extends out 10mm-15mm to align the welding bead, and the submerged arc welding flux with the thickness of 40-60mm is covered on the welding bead.

2. The welding method for the anchor structure of the anchor plate cable beam as claimed in claim 1, wherein when the end plates are assembled and welded at both ends of the anchor pipe, respectively, the groove of the anchor pipe is single-sided at 45 °, and the gap between the welding lines is 4-5 mm.

3. The method for welding the anchor structure of the anchor plate cable beam as claimed in claim 1, wherein when the end plates are assembled and welded at both ends of the anchor pipe respectively, the welding parameters of backing welding by using the argon arc welding single-side welding double-side forming method are as follows: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm.

4. The method for welding the anchor plate cable beam anchoring structure according to claim 1, wherein when the end plates are assembled and welded at both ends of the anchor pipe respectively, welding parameters of the submerged arc welding agent combined with carbon dioxide arc welding are as follows: the first current 150-160A, the voltage 26-28V; the second current is 180-200A, and the voltage is 28-30V; the capping current is 180-200A, and the voltage is 29-32V.

5. The welding method for the anchor plate, cable beam and anchor structure of claim 1, wherein when the anchor pipe and the end plate are assembled to the anchor plate and welded and fixed, grooves of 40 degrees are formed on both sides of the anchor plate, and the gap between the welding lines is 4-5 mm.

6. The method for welding the anchor structure of the anchor plate and the cable beam as claimed in claim 1, wherein when the anchor pipe and the end plate are assembled and welded to the anchor plate, two argon arc welding guns are used to perform backing welding with the same welding parameters and welding speed by using double-sided argon arc welding, and the welding parameters are as follows: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm.

7. The welding method for the anchor plate, the cable beam and the anchor structure of the anchor plate as claimed in claim 1, wherein when the anchor pipe and the end plate are assembled to the anchor plate and welded and fixed, the welding parameters of the filling welding by the carbon dioxide gas shielded welding and the flux-cored wire are as follows: the first current 150-160A, the voltage 26-28V; the second current 180-200A, the voltage 28-30V and the welding wire model ER 50-6.

8. The welding method for the anchor plate, cable beam and anchor structure of claim 1, wherein when the anchor pipe and the end plate are assembled to the anchor plate and welded and fixed, the welding parameters of the facing welding are as follows: the welding wire model is ER50-6, the welding current is 250A, the welding voltage is 33V, the walking speed of the welding trolley is 40-45cm/min, and the submerged arc welding flux adopts SJ 101.

9. The welding method for the anchor plate, cable beam and anchor structure of claim 1, wherein when the anchor pipe and the end plate are assembled to the anchor plate and welded and fixed, the jig is used to ensure that the welding is performed using the ship-shaped position during the filling welding.

Technical Field

The application relates to the field of welding methods, in particular to a welding method for an anchor structure of a cable beam of an anchor plate.

Background

The anchor plate type cable beam anchoring structure is an area with large local stress and complex force transmission condition, and is used for dispersing the huge cable force transmitted by the stay cable to the section of a main beam. The anchor plate type cable beam anchoring structure is small in local space, multiple in welding seams, concentrated in position and prone to generate large temperature stress and stress concentration, and therefore the welding process is particularly important.

But currently CO is commonly used₂The welding method of back gouging of gas shielded welding hardly guarantees the welding seam quality, and the anchor pipe is medium carbon steel thick-walled pipe at first, and the anchor arm plate material is low alloy high strength steel, and the connection between the two belongs to the welding of xenogenesis steel, and the repeated heating easily produces the peeling crack during welding, and the thermal deformation that produces during welding has very big influence to welding precision, can reduce the bearing capacity of structure even when serious.

Disclosure of Invention

The application aims to provide a welding method for an anchor structure of a cable beam of an anchor plate, which reduces the defects that peeling cracks are easily generated when heat is input and dissimilar steel is repeatedly heated during welding, and simultaneously reduces the problem of welding deformation caused by welding stress.

The embodiment of the application is realized as follows:

the embodiment of the application provides a method for welding an anchor structure of a cable beam of an anchor pulling plate, which comprises the following steps: spot-welding and fixing the anchor plate stiffening ribs on the anchor plate, welding and fixing the anchor plate and the corresponding anchor plate stiffening ribs on the steel box girder, respectively assembling and welding end plates at two ends of the anchor pipe, and assembling and welding the anchor pipe and the end plates on the anchor plate and the anchor plate stiffening ribs; when the two ends of the anchor pipe are respectively assembled and welded with the end plates, backing welding is carried out by adopting an argon arc welding single-side welding double-side forming method, and the cover surface is filled by adopting a welding method of combining submerged arc welding agent with carbon dioxide gas shielded welding; when the anchor pipe and the end plate are assembled on the anchor pull plate and welded and fixed, two argon arc welding guns are used and adopt the same welding parameters and welding speedBacking welding with double-sided argon arc welding, performing filling welding with carbon dioxide gas shielded welding and flux-cored wire, and driving CO with welding carriage during cover welding₂Protecting the welding gun to weld, and taking off CO during welding₂Protecting the protective sleeve on the welding gun to expose the contact tip and to expose CO₂The welding wire on the protective welding gun extends out 10mm-15mm to align the welding bead, and the submerged arc welding flux with the thickness of 40-60mm is covered on the welding bead.

In some alternative embodiments, when the two ends of the anchor pipe are respectively assembled and welded with the end plates, the bevel of the anchor pipe adopts a single side of 45 degrees, and the gap of the welding line is 4-5 mm.

In some alternative embodiments, when the two ends of the anchor pipe are respectively assembled and welded with the end plates, the welding parameters of backing welding by using the argon arc welding single-side welding double-side forming method are as follows: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm.

In some alternative embodiments, when the two ends of the anchor pipe are respectively assembled and welded with the end plates, the welding parameters of the submerged arc welding agent combined with the carbon dioxide gas shielded welding are as follows: the first current 150-160A, the voltage 26-28V; the second current is 180-200A, and the voltage is 28-30V; the capping current is 180-200A, and the voltage is 29-32V.

In some alternative embodiments, when the anchor pipe and the end plate are assembled on the anchor plate and welded and fixed, the two sides of the anchor plate are provided with 40-degree grooves, and the gap of the welding line is 4-5 mm.

In some alternative embodiments, when the anchor pipe and the end plate are assembled on the anchor pull plate and welded and fixed, the welding parameters of the double-sided argon arc welding backing welding are that two argon arc welding guns are used with the same welding parameters and welding speed: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm.

In some alternative embodiments, when the anchor tube and the end plate are assembled on the anchor plate and welded and fixed, the welding parameters of the filling welding by using the carbon dioxide gas shielded welding and the flux-cored wire are as follows: the first current 150-160A, the voltage 26-28V; the second current 180-200A, the voltage 28-30V and the welding wire model ER 50-6.

In some alternative embodiments, when the anchor tube and the end plate are assembled to the anchor plate and welded to be fixed, the welding parameters of the facing welding are as follows: the welding wire model is ER50-6, the welding current is 250A, the welding voltage is 33V, the walking speed of the welding trolley is 40-45cm/min, and the submerged arc welding flux adopts SJ 101.

In some alternative embodiments, when the anchor tubes and end plates are assembled to the anchor plate and welded together, a jig is used to ensure that the welding is performed using the boat-type position during the fill welding.

The beneficial effect of this application is: the method for welding the anchor structure of the anchor plate cable beam provided by the embodiment comprises the following steps: spot-welding and fixing the anchor plate stiffening ribs on the anchor plate, welding and fixing the anchor plate and the corresponding anchor plate stiffening ribs on the steel box girder, respectively assembling and welding end plates at two ends of the anchor pipe, and assembling and welding the anchor pipe and the end plates on the anchor plate and the anchor plate stiffening ribs; when the two ends of the anchor pipe are respectively assembled and welded with the end plates, backing welding is carried out by adopting an argon arc welding single-side welding double-side forming method, and the cover surface is filled by adopting a welding method of combining submerged arc welding agent with carbon dioxide gas shielded welding; when the anchor pipe and the end plate are assembled on the anchor pull plate and welded and fixed, two argon arc welding guns are used for backing welding by adopting double-sided argon arc welding with the same welding parameters and welding speed, carbon dioxide gas shielded welding and flux-cored wire are used for filling welding, and when the cover surface is welded, the welding trolley is used for driving CO to drive the welding trolley₂Protecting the welding gun to weld, and taking off CO during welding₂Protecting the protective sleeve on the welding gun to expose the contact tip and to expose CO₂The welding wire on the protective welding gun extends out 10mm-15mm to align the welding bead, and the submerged arc welding flux with the thickness of 40-60mm is covered on the welding bead. The anchor plate cable beam anchoring structure welding method provided by the embodiment reduces the defects that peeling cracks are easily generated due to repeated heating during heat input and dissimilar steel welding, and simultaneously reduces the problem of welding deformation caused by welding stress.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of an anchor plate cable beam anchoring structure in an anchor plate cable beam anchoring structure welding method according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an anchor pipe and two end plates which are welded at the bottom by using an argon arc welding single-side welding double-side forming method in the anchor plate cable beam anchoring structure welding method provided by the embodiment of the application;

fig. 3 is a schematic structural diagram of an anchor plate, an anchor pipe and an end plate which are welded by using two argon arc welding guns and adopting double-sided argon arc welding backing in the anchor plate cable beam anchoring structure welding method provided by the embodiment of the application;

fig. 4 is a schematic structural diagram of welding an anchor plate, an anchor pipe and an end plate by carbon dioxide gas shielded welding and flux-cored wire filling in the anchor plate and cable beam anchoring structure welding method provided in the embodiment of the present application;

FIG. 5 shows that a welding trolley is used to drive CO in the method for welding the anchor structure of the anchor plate cable beam provided by the embodiment of the present application₂And the protective welding gun covers the anchor plate, the anchor pipe and the end plate.

In the figure: 100. a steel box girder; 110. an anchor plate; 120. anchor plate stiffeners; 130. an anchor pipe; 140. an end plate; 150. an argon arc welding gun; 160. CO 2₂And protecting the welding gun.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The features and properties of the anchor plate cable beam anchoring structure welding method of the present application will be described in further detail below with reference to examples.

As shown in fig. 1, 2, 3, 4, and 5, an embodiment of the present invention provides a method for welding an anchor structure of an anchor plate cable beam, where the anchor structure of the anchor plate cable beam includes a steel box beam 100, two anchor plates 110 with bottoms welded to the steel box beam 100, four anchor plate stiffeners 120, an anchor pipe 130, and two end plates 140, one anchor plate stiffener 120 is welded to each of two sides of each anchor plate 110, two end plates 140 are respectively sleeved and welded to two ends of the anchor pipe 130, and the anchor pipe 130 is inserted and welded between the two anchor plates 110.

The welding method of the anchor plate cable beam anchoring structure comprises the following steps:

spot-welding and fixing the anchor plate stiffening ribs on the anchor plate, and welding and fixing the anchor plate and the corresponding anchor plate stiffening ribs on the steel box girder;

respectively assembling and welding end plates at two ends of the anchor pipe; during welding, the groove of the anchor pipe adopts a single side of 45 degrees, the gap of a welding line is 4-5mm, backing welding is carried out by adopting an argon arc welding single-side welding double-side forming method, and the welding parameters are as follows: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm; the cover surface is filled by adopting a welding method of combining submerged arc welding agent with carbon dioxide gas shielded welding, and the welding parameters are as follows: the first current 150-160A, the voltage 26-28V; the second current is 180-200A, and the voltage is 28-30V; the capping current is 180-200A, and the voltage is 29-32V;

assembling the anchor pipe and the end plate on the anchor plate and the anchor plate stiffening rib and welding and fixing the anchor pipe and the end plate, during welding, forming a 40-degree groove on two sides of the anchor plate, wherein the gap of a welding line is 4-5mm, two argon arc welding guns 150 are used for adopting double-sided argon arc welding backing welding with the same welding parameters and welding speed, and the welding parameters are as follows: the direct current is connected with 80-100A and 11-12V; the welding speed is 90-100 mm/min; argon flow is 12-15L/min; the diameter of the filler wire is 2.5 mm; adopting carbon dioxide gas shielded welding and flux-cored wire to carry out filling welding, and the welding parameters are as follows: the first current 150-160A, the voltage 26-28V; the second current is 180-200A, the voltage is 28-30V, and the type of the welding wire is ER 50-6; when the cover surface is welded, the welding trolley is used for driving CO₂The welding torch 160 is shielded to perform welding, and CO is removed during welding₂Protecting the protective sleeve on the welding gun 160 to expose the contact tip and to expose CO₂The welding wire on the protective welding gun 160 extends out of 10mm-15mm to align the welding bead, and the submerged-arc welding flux with the thickness of 40-60mm is covered on the welding bead, and the welding parameters of the cover surface welding are as follows: the welding wire model is ER50-6, the welding current is 250A, the welding voltage is 33V, the walking speed of the welding trolley is 40-45cm/min, and the submerged arc welding flux adopts SJ 101.

The welding method for the anchoring structure of the anchor plate cable beam provided by the embodiment applies a double-sided argon arc welding technology to a thick plate pipe full penetration fillet weld without carbon arc gouging back gouging, reduces heat input, solves the problems that the welding of dissimilar steel is repeatedly heated and is easy to generate peeling cracks, and simultaneously avoids welding deformation caused by welding stress; meanwhile, the ship-shaped position welding is adopted during filling welding, and the gas-shielded welding wire and the submerged arc welding agent are adopted for combined welding during cover surface welding, so that the method has the advantages of good forming effect, high welding seam quality and long fatigue life of the welding seam under the action of dynamic load. The welding method for the anchoring structure of the anchor plate cable beam provided by the embodiment makes full use of the advantages of two welding methods for combined welding, solves the problem of the overall mechanical property of the joint in the welding process, reduces welding deformation, and improves the manufacturing precision of the structural member.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.