CN116163201A - Steel anchor beam and method for improving manufacturing quality of steel anchor beam - Google Patents

Steel anchor beam and method for improving manufacturing quality of steel anchor beam Download PDF

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Publication number
CN116163201A
CN116163201A CN202310160872.3A CN202310160872A CN116163201A CN 116163201 A CN116163201 A CN 116163201A CN 202310160872 A CN202310160872 A CN 202310160872A CN 116163201 A CN116163201 A CN 116163201A
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China
Prior art keywords
plate
bottom plate
steel anchor
anchor
welding
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Pending
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CN202310160872.3A
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Chinese (zh)
Inventor
吴春海
王涛
黄树强
黄磊
温森元
周妤莲
马文辉
李雪梅
李亚文
王俊
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Guangxi Road and Bridge Engineering Group Co Ltd
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Guangxi Road and Bridge Engineering Group Co Ltd
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Application filed by Guangxi Road and Bridge Engineering Group Co Ltd filed Critical Guangxi Road and Bridge Engineering Group Co Ltd
Priority to CN202310160872.3A priority Critical patent/CN116163201A/en
Publication of CN116163201A publication Critical patent/CN116163201A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/04—Cable-stayed bridges
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • 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)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention provides a steel anchor beam and a method for improving the manufacturing quality of the steel anchor beam, wherein full penetration welding is adopted for main stress connection parts of the steel anchor beam, such as a connection welding line between a top plate and a side pulling plate and a connection welding line between a bottom plate and the side pulling plate, so as to improve the stress performance of the steel anchor beam. When the steel anchor beam is assembled and welded, a reasonable assembly sequence is determined by combining the form and the relative position of the welding seam, an inlet and an outlet for people to enter and exit the beam body space are formed in the bottom plate of the steel anchor beam, so that workers can still enter the beam body space through the inlet and the outlet when the top plate is welded, reverse back gouging is carried out on the welding seam, full penetration welding is further effectively ensured, and compared with the mode of manufacturing the steel anchor beam by adopting partial penetration welding in the prior art, the welding seam quality of the structure can be effectively improved.

Description

Steel anchor beam and method for improving manufacturing quality of steel anchor beam
Technical Field
The invention relates to bridge manufacturing technology, in particular to a steel anchor beam and a method for improving manufacturing quality of the steel anchor beam.
Background
The main stress structure of the cable-stayed bridge comprises a foundation, a cable tower, a stay cable and a main girder, wherein the stress direction is the dead weight of the main girder and the external load is transmitted to the stay cable, the stay cable transmits the load to the cable tower, and the cable tower transmits the force to the foundation. Symmetrical/asymmetrical stay cables are distributed on two sides of a cable tower of the cable-stayed bridge, the stay cables transmit horizontal and vertical component forces to the cable tower, and as the cable tower is generally of a concrete structure, the tensile strength of concrete is low, the compressive strength of the concrete is high, so that a structure is needed to compensate a short plate with low tensile strength of the concrete, and a steel anchor beam is the best choice.
The Wu Xuan Qianjiang extra large bridge is a double-tower double-cable-surface mixed beam cable-stayed bridge, the cable tower is 216m in height, 20 steel anchor beams are distributed in the range of 82 m on the upper tower column, the length of each steel anchor beam is 5.8m, the width of each steel anchor beam is 2.4m, and each steel anchor beam mainly comprises a top plate, a bottom plate, side pull plates, a partition plate, an anchor head assembly and the like. Steel corbels are support structures for steel anchor beams, each steel anchor beam being supported directly on a pair of steel corbel top plates. The steel corbel consists of an upper bearing plate, a corbel web plate, corbel stiffening ribs, a wallboard, shear nails and the like.
The steel anchor beam is made of high-strength low-alloy steel, has the characteristics of high tensile strength and high toughness, and can effectively balance horizontal pulling force from a stay cable and transfer vertical pressure to cable tower concrete by reasonably combining different steel plate units into a beam-shaped structure. The steel anchor beam is crucial in the whole force transmission system, so that the processing quality of the steel anchor beam is ensured, and the important precondition for ensuring the effective force transmission of the steel anchor beam is provided. Because the connection between the steel structures mainly takes welding as a main part, the thickness of the steel plates is different, the shrinkage deformation after welding is different, different welding sequences are determined by different assembly sequences, the different welding sequences influence the overall dimension of the assembled structure, and the reasonable unit assembly sequence is important to be determined according to different plate thicknesses and welding seam forms.
Aiming at the importance of different plate thicknesses and connecting parts, the connecting weld joints between the steel plates are provided with penetration fillet weld joints with blunt edges and full penetration fillet weld joints, and the obtained weld joints have better strength and toughness, fewer defects and more guaranteed performance, however, the full penetration weld joints need to gouge and back gouge the back surface of the full penetration weld joints in the welding process, the back surface back gouging needs enough operation space, and the steel anchor beam cannot provide enough operation space after the welding of the top plate to carry out the back surface back gouging on the weld joints. In order to avoid back gouging, the welding mode of the steel anchor beam in the prior art is generally changed from full penetration welding to partial penetration welding, and the method can truly avoid back gouging, but has a larger probability of incomplete penetration, and influences the quality of structural welding seams.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the background art and provides a method for improving the manufacturing quality of a steel anchor beam.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the method for improving the manufacturing quality of the steel anchor beam comprises a bottom plate, two side pull plates, two end baffle plates, two anchor head assemblies, a transverse baffle plate and a top plate, wherein the two side pull plates are respectively fixed on two opposite sides of the bottom plate, the two end baffle plates are respectively fixed on two opposite ends of the bottom plate and are connected with the bottom plate and the two side pull plates to form a beam body space, the two anchor head assemblies are respectively fixed on two opposite ends of the beam body space, the transverse baffle plate is fixedly arranged in the beam body space and positioned between the two anchor head assemblies, and the top plate is fixedly connected with the tops of the two side pull plates; the bottom plate is provided with an inlet and an outlet for people to enter and exit the beam body space, and the method for improving the manufacturing quality of the steel anchor beam comprises the following steps:
s11, welding full penetration fillet welds between the bottoms of the side pull plates and the bottom plate so as to fix the two side pull plates on the two opposite sides of the bottom plate respectively;
s12, respectively assembling the anchor head assemblies at two opposite ends of the bottom plate: the anchor head assembly is fixedly connected with the bottom plate and the two side pulling plates through welding a penetration fillet weld with a blunt edge between the anchor head assembly and the bottom plate and a penetration fillet weld with a blunt edge between the anchor head assembly and the side plates;
s13, assembling end partition boards and transverse partition boards: welding a fillet between the end baffle and the bottom plate, and between the end baffle and the two side pull plates, so as to fix the end baffles at opposite ends of the bottom plate respectively; welding a fillet weld between the diaphragm plate and the bottom plate, and between the diaphragm plate and the two side pull plates to fix the diaphragm plate between the two anchor head assemblies;
s14, assembling a top plate: and welding the full penetration fillet weld between the top plate and the tops of the two side pull plates, and entering the beam body space through the inlet and the outlet in the process of welding the top plate so as to carry out back chipping on the full penetration fillet weld between the top plate and the two side pull plates.
Further, the full penetration fillet weld between the side pulling plate and the bottom plate is symmetrically welded by taking the connecting line of the midpoints of the two long sides of the side pulling plate as a symmetry axis.
Further, the full penetration fillet weld between the top plate and the side pull plate is symmetrically welded by taking the connecting line of the midpoints of the two long sides of the top plate as a symmetry axis.
Further, the thickness of the pulling plate is 8-12mm thicker than that of a pulling plate of a steel anchor beam without an inlet and an outlet.
Further, the anchor head assembly comprises a bearing plate, a plurality of anchor webs and an anchor backing plate, wherein the tops of the anchor webs are welded to the bottom surface of the bearing plate, the anchor backing plate is welded to the top surface of the bearing plate, two opposite sides of the bearing plate are welded to the side pulling plates respectively, the bottom surface of the anchor web is welded to the bottom plate, and two opposite sides of the anchor web are welded to the side pulling plates respectively.
Further, each side pulling plate comprises a pulling plate main plate and pulling plate stiffening ribs, the bottom of the pulling plate main plate is welded with the bottom plate, the top of the pulling plate main plate is welded with the top plate, the anchor head assembly, the end partition plates and the transverse partition plates are welded with the inner surface of the pulling plate main plate, and the pulling plate stiffening ribs are welded on the outer surface of the corresponding pulling plate main plate.
Further, plate parts forming the steel anchor beam are subjected to blanking by adopting numerical control plasma cutting.
Further, after the steel anchor beam is assembled, coating operation is performed on the steel anchor beam.
The utility model provides a steel anchor beam, steel anchor beam includes bottom plate, both sides arm-tie, both ends baffle, two anchor head subassemblies, diaphragm and roof, two the side arm-tie is fixed in respectively the opposite both sides of bottom plate, two the end baffle set firmly respectively in the opposite both ends of bottom plate and connect bottom plate and two the side arm-tie is in order to enclose into the roof beam body space, two the anchor head subassembly set firmly respectively in the opposite both ends in roof beam body space, the diaphragm set firmly in the roof beam body space and be located two between the anchor head subassembly, roof fixed connection is two the top of side arm-tie, offer on the bottom plate and be used for the people business turn over the exit in roof beam body space.
Further, each side pulling plate comprises a pulling plate main plate and a pulling plate stiffening rib, the bottom of the pulling plate main plate is welded with the bottom plate, the top of the pulling plate main plate is welded with the top plate, the anchor head assembly, the end partition plate and the transverse partition plate are welded with the inner surface of the pulling plate main plate, and the pulling plate stiffening ribs are welded on the outer surface of the corresponding pulling plate main plate; the thickness of the pulling plate main plate is 8-12mm thicker than that of the pulling plate main plate of the steel anchor beam without the inlet and the outlet.
By adopting the technical scheme, the invention has the following beneficial effects:
1. according to the method for improving the manufacturing quality of the steel anchor beam, full penetration welding is adopted for the main stress connection parts of the steel anchor beam, such as the connection welding seam between the top plate and the side pulling plate and the connection welding seam between the bottom plate and the side pulling plate, so that the stress performance of the steel anchor beam is improved. When the steel anchor beam is assembled and welded, a reasonable assembly sequence is determined by combining the form and the relative position of the welding seam, an inlet and an outlet for people to enter and exit the beam body space are formed in the bottom plate of the steel anchor beam, so that workers can still enter the beam body space through the inlet and the outlet when the top plate is welded, reverse back gouging is carried out on the welding seam, full penetration welding is further effectively ensured, and compared with the mode of manufacturing the steel anchor beam by adopting partial penetration welding in the prior art, the welding seam quality of the structure can be effectively improved.
2. According to the method for improving the manufacturing quality of the steel anchor beam, the side pulling plates are thickened so as to compensate for damage to the whole strength of the steel anchor beam after the inlet and the outlet are formed in the bottom plate, and the inlet and the outlet formed in the bottom plate are ensured not to reduce the whole strength of the steel anchor beam.
Drawings
FIG. 1 is a schematic view of an assembled steel anchor beam and steel corbel according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a steel anchor beam according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the steel anchor beam of FIG. 2 from another perspective;
FIG. 4 is a schematic view of the steel anchor beam of FIG. 2 with one side tie plate removed;
FIG. 5 is a schematic view of the structure of a steel corbel according to the preferred embodiment of the present invention;
description of the main reference signs
100. A steel anchor beam; 10. a bottom plate; 101. an inlet and an outlet; 11. a side pulling plate; 112. a pulling plate main board; 114. a pulling plate stiffener; 12. an end baffle; 13. an anchor head assembly; 131. a pressure bearing plate; 132. an anchor web; 134. an anchor backing plate; 14. a diaphragm; 15. a top plate; 2. steel corbels; 21. a wall plate; 22. an upper carrier plate; 23. bracket webs; 24. bracket baffle; 25. a connecting plate; 26. bracket stiffening plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, a method for improving the manufacturing quality of a steel anchor beam according to a preferred embodiment of the present invention is provided, wherein the steel anchor beam 100 comprises a bottom plate 10, two side pull plates 11, two end partition plates 12, two anchor head assemblies 13, a diaphragm plate 14 and a top plate 15. The two side pull plates 11 are respectively fixed on two opposite sides of the bottom plate 10; the two end baffle plates 12 are respectively fixedly arranged at the opposite ends of the bottom plate 10 and are connected with the bottom plate 10 and the pull plates 11 at the two sides so as to form a beam body space (not labeled); the two anchor head assemblies 13 are respectively and fixedly arranged at the two opposite ends of the beam body space; the diaphragm plate 14 is fixedly arranged in the beam body space and positioned between the two anchor head assemblies 13; the top plate 15 is fixedly connected to the top of the two side pull plates 11. In this embodiment, the bottom plate 10 is provided with an inlet and outlet 101 for people to enter and exit the beam body space, and the method for improving the manufacturing quality of the steel anchor beam comprises the following steps:
s11, welding full penetration fillet welds between the bottoms of the side pull plates 11 and the bottom plate 10 to fix the side pull plates 11 to opposite sides of the bottom plate 10, respectively.
In this embodiment, the full penetration corner weld between the side pull plate 11 and the bottom plate 10 is symmetrically welded by using the line connecting the midpoints of the two long sides of the side pull plate 11 as a symmetry axis, that is, full penetration welding can be performed from opposite ends of the full penetration corner weld between the side pull plate 11 and the bottom plate 10 toward the symmetry axis at the same time, or welding can be performed from the symmetry axis toward opposite ends of the full penetration corner weld respectively. The symmetrical welding mode is adopted, so that the positions of the welding seams are symmetrical in the structure, and the deformation of the structure during welding is further reduced.
In this embodiment, the side pull plate 11 and the bottom plate 10 are first subjected to full penetration welding, and when the back surface back chipping of the weld joint is required in the full penetration welding process, a worker can conveniently enter the space enclosed by the side pull plate 11 and the bottom plate 10 to perform the back surface back chipping of the weld joint.
In this embodiment, each side of the pull plate 11 includes a pull plate main plate 112 and pull plate stiffening ribs 114, the bottom of the pull plate main plate 112 and the bottom plate 10 are welded by full penetration welding, and the connection weld between the pull plate main plate and the bottom plate 10 is a full penetration fillet weld. The tie stiffener 114 is welded to the outer surface of the corresponding tie plate 112 facing away from the other tie plate 11. The welding between the pulling plate stiffener 114 and the pulling plate main board 112 may be full penetration welding or partial penetration welding, etc. as required, and the present invention is not limited thereto.
S12, assembling the anchor head assemblies 13 at opposite ends of the base plate 10: the anchor head assembly 13 is fixedly connected with the bottom plate 10 and the two side pull plates 11 through welding the welding seam between the anchor head assembly 13 and the bottom plate 10 and the welding seam between the anchor head assembly 13 and the side pull plates 11.
In this embodiment, the welds between anchor head assembly 13 and base plate 10 and between anchor head assembly 13 and side pull plate 11 are all blunt-sided penetration fillet welds. The anchor head assembly 13 comprises a bearing plate 131, a plurality of anchor webs 132 and an anchor backing plate 134, wherein the tops of the anchor webs 132 are welded on the bottom surface of the bearing plate 131, and the anchor backing plate 134 is welded on the top surface of the bearing plate 131. When the anchor head assembly 13 is assembled and welded, the connection welding seam between the bearing plate 131 and the anchor web 132 and the connection welding seam between the anchor backing plate 134 and the bearing plate 131 can be fillet welding seams, and back chipping is not needed during welding. When the anchor head assembly 13 is installed, the opposite sides of the bearing plate 131 are respectively welded with the inner surfaces of the draw plate main plates 112 of the two side draw plates 11 facing the other side draw plate 11, the bottom surfaces of the anchor webs 132 are welded with the top surfaces of the bottom plates 10, and the opposite sides of the anchor webs 132 are respectively welded with the inner surfaces of the draw plate main plates 112 of the two side draw plates 11. The welding between the bearing plate 131 and the side pulling plate 11, the welding between the anchor web 132 and the bottom plate 10 and the welding between the anchor web 132 and the side pulling plate 11 can be partially penetration welded to obtain penetration fillet weld with blunt edges, and back chipping is not needed during welding.
S13, assembling the end partition plate 12 and the transverse partition plate 14: welding a fillet between the end spacer 12 and the bottom plate 10, and a fillet between the end spacer 12 and the both side pull plates 11 to fix the end spacers 12 to the opposite ends of the bottom plate 10, respectively; the fillet welds between diaphragm plate 14 and base plate 10, and between diaphragm plate 14 and side pull plates 11 are welded to secure diaphragm plate 14 between two anchor head assemblies 13.
In this embodiment, the bottom of the end baffle 12 is welded to the top surface of the bottom plate 10, two opposite sides of the end baffle 12 are welded to the inner surfaces of the pull plate main plates 112 of the pull plates 11 on two sides respectively, and fillet welding or partial penetration welding can be adopted for welding between the end baffle 12 and the side pull plates 11 and between the end baffle 12 and the bottom plate 10, and back chipping is not required during welding. The bottom of diaphragm 14 and the top surface welded fastening of bottom plate 10, the opposite both sides of diaphragm 14 respectively with the arm-tie mainboard 112 internal surface welded fastening of both sides arm-tie 11, and the welding between diaphragm 14 and the arm-tie 11 and the welding between diaphragm 14 and bottom plate 10 can adopt the partial penetration welding, need not reverse side back chipping during the welding.
S14, assembling the top plate 15: the full penetration fillet weld between the welded top plate 15 and the tops of the two side pull plates 11 enters the beam body space through the inlet and outlet 101 in the process of welding the top plate 15 so as to carry out back gouging on the full penetration fillet weld between the top plate 15 and the two side pull plates 11.
In the present embodiment, the top plate 15 is welded to the top of the panel main plate 112 of the both-side panel 11. During welding, the full penetration fillet weld between the top plate 15 and the side pull plate 11 is symmetrically welded by taking the connecting line of the midpoints of the two long sides of the top plate 15 as a symmetry axis, namely, the full penetration welding can be simultaneously carried out from the opposite ends of the full penetration fillet weld between the top plate 15 and the side pull plate 11 towards the symmetry axis, or the full penetration welding can be respectively carried out from the symmetry axis towards the opposite ends of the full penetration fillet weld. The symmetrical welding mode is adopted, so that the positions of the welding seams are symmetrical in the structure, and the deformation of the structure during welding is further reduced.
Since the overall strength of the steel anchor beam 100 is damaged after the inlet and outlet 101 is formed in the bottom plate 10, in order to ensure that the overall strength of the steel anchor beam 100 is not reduced by the inlet and outlet 101 formed in the bottom plate 10, in this embodiment, the pulling plate main plate 112 of the side pulling plate 11 is thickened. The thickness of the panel main plate 112 of the side panel 11 of the present embodiment is 8-12mm thicker than that of the panel main plate 112 of the steel anchor beam 100 without the inlet and outlet 101. The side pulling plate 11 is thickened to compensate for the damage to the integral strength of the steel anchor beam 100 after the inlet and outlet 101 is formed in the bottom plate 10, so that the inlet and outlet 101 formed in the bottom plate 10 can not reduce the integral strength of the steel anchor beam 100.
Because the steel anchor beam penetration weld is more, a large amount of heat can be generated in the welding process of the steel anchor beam, the welded steel anchor beam parts can generate larger deformation, the welding deformation can be reduced by reasonable welding sequence, the subsequent finishing workload is reduced, the penetration weld in the welding process is symmetrically welded, the welding can be carried out after the welding is timely finished to be qualified, and the welding deformation cannot be accumulated to the final step. Specifically, after welding the weld seam, appearance inspection is performed on the weld seam, nondestructive inspection such as ultrasonic flaw detection is performed on the weld seam passing the appearance inspection, and if the inspection is failed, the structure is required to be trimmed. For example, if the surface of the welded portion is uneven, the welded portion needs to be corrected. The correction method can be cold correction or hot correction. The ambient temperature of cold correction should not be lower than 5 ℃, the force should be slowly applied during correction, and the total deformation should not be more than 2% of the original length of the deformation part. The heating temperature should be controlled between 600 and 750 ℃ during hot straightening, and the heating is strictly forbidden, so that repeated heating at the same part is not suitable. The temperature of the steel after correction should be naturally cooled, and before the steel is cooled to room temperature, the steel is not hammered and quenched by water. The surface of the steel after correction must not be dented or otherwise damaged.
In use, the steel anchor beam 100 is supported on two steel corbels 2 at opposite ends of the steel anchor beam 100. In the present embodiment, the steel bracket 2 includes a wall plate 21, an upper carrier plate 22, a bracket web 23, a bracket spacer 24, and a connection plate 25. The upper carrier plate 22 and the bracket web plate 23 are both fixed on the same side surface of the wall plate 21, the top surface of the bracket web plate 23 and the bottom surface of the upper carrier plate 22 are fixed to form a support frame body, and the bracket stiffening plate 26 is arranged on the outer side surface of the bracket web plate 23; the bracket partition plate 24 is fixedly connected with two adjacent bracket webs 23 and the upper bearing plate 22; one end of the connecting plate 25 is fixed to the side of the wall plate 21 facing away from the supporting frame body. The assembly welding of the steel corbel 2 comprises the following steps:
s21, welding a bevel angle weld joint between a bracket web 23 and an upper bearing plate 22 to form the support frame body;
s22, welding a full penetration fillet weld between the wallboard 21 and the bracket web 23, and welding a full penetration fillet weld between the wallboard 21 and the upper carrier plate 22;
s23, assembling and welding bracket partition plates 24 on bracket webs 23, and welding full penetration fillet welds between the bracket partition plates 24 and the bracket webs 23 and between the bracket webs 22;
s24, assembling and welding bracket stiffening plates 26 on the bracket web plates 23;
s25, assembling and welding the connecting plate 25 on the side surface of the wall plate 21, which is opposite to the supporting frame body.
When assembled, the bottom plate 10 of the steel anchor beam 100 is fixed to the upper carrier plate 22 of the steel corbel 2 by welding or bolting.
In the present embodiment, the steel anchor beam 100 and the steel corbel 2 are formed by blanking by cutting. In the present embodiment, the steel anchor beam 100 and the steel corbel 2 are each made of steel, and the steel is cut by numerical control plasma to obtain the steel anchor beam 100, that is, the bottom plate 10, the top plate 15, the side pull plate 11, the end spacer 12, the bearing plate 131, the anchor web 132, the anchor pad 134, the diaphragm plate 14, and the like, which constitute the anchor head assembly 13, and the steel corbel 2, that is, the wall plate 21, the upper bearing plate 22, the corbel web 23, the corbel spacer 24, the connecting plate 25, and the like.
The flatness of the bottom surfaces of the upper bearing plates 131 of the steel corbels 2 and the bottom plate 10 of the steel anchor beam 100 is the key for ensuring the close contact between the steel corbels 2 and the steel anchor beam 100, so that the bottom plate 10 of the steel anchor beam 100 and the upper bearing plates 131 of the steel corbels 2 are blanked by thick plates, such as 48mm thick plates, and a milling surface allowance is reserved, and when the side pull plates 11 are welded with the bottom plate 10, the bottom plate 10 and the upper bearing plates 131 are milled, the surface flatness of the contact surfaces of the bottom plate 10 and the upper bearing plates 131 is ensured, the deformation of the bottom plate 10 caused by welding can be effectively solved, and the installation accuracy of the steel anchor beam 100 is ensured.
In the assembly welding step of the steel anchor beam 100 and the steel corbel 2, rust, scale, greasy dirt, moisture and other harmful substances in the to-be-welded area of the part must be thoroughly removed before assembly, so that the surface of the steel anchor beam is exposed with metallic luster.
In the assembly welding step of the steel anchor beam 100 and the steel corbel 2, the welding is easy to cause quality problems such as slag inclusion and air holes if common arc welding is adopted, so that the welding quality is preferably improved by adopting two-step welding or submerged arc welding in the embodiment. The welding work is preferably carried out indoors or in windproof and rainproof facilities, and the welding environment humidity is not more than 80%; the ambient temperature for welding the low alloy steel should not be lower than 5 ℃ and the ambient temperature for welding the low carbon steel should not be lower than 0 ℃.
In the present embodiment, after the steel corbels 2 and the steel anchor beams 100 are welded, a coating operation is performed to improve the corrosion resistance and the like of the steel corbels 2 and the steel anchor beams 100.
In the method for improving the manufacturing quality of the steel anchor beam, full penetration welding is adopted for the main stress connection parts of the steel anchor beam 100, for example, the connection welding seam between the top plate 15 and the side pull plate 11 and the connection welding seam between the bottom plate 10 and the side pull plate 11, so as to improve the stress performance of the steel anchor beam 100. When the steel anchor beam 100 is assembled and welded, a reasonable assembly sequence is determined by combining the form and the relative position of the welding seam, and an inlet and outlet 101 for people to enter and exit the beam body space is formed in the bottom plate 10 of the steel anchor beam 100, so that when the top plate 15 is welded, workers can still enter the beam body space through the inlet and outlet 101, back gouging is carried out on the welding seam, full penetration welding is further effectively ensured, and compared with the mode of manufacturing the steel anchor beam by adopting partial penetration welding in the prior art, the welding seam quality of the structure can be effectively improved.
In the method for improving the manufacturing quality of the steel anchor beam, the side pulling plate 11 is thickened to compensate for the damage to the integral strength of the steel anchor beam 100 caused by the inlet and outlet 101 arranged on the bottom plate 10, so that the integral strength of the steel anchor beam 100 is not reduced by the inlet and outlet 101 arranged on the bottom plate 10.
According to the method for improving the manufacturing quality of the steel anchor beam, the connection of the main stress connection parts of the steel anchor beam 100 is fully penetration welded, so that the overall stress intensity of the steel anchor beam 100 is improved, and the other connection parts of the steel anchor beam 100 except the main stress connection parts can be welded in a partial penetration welding mode, reverse back chipping is not required, and the manufacturing efficiency is improved.
The foregoing description is directed to the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the invention, and all equivalent changes or modifications made under the technical spirit of the present invention should be construed to fall within the scope of the present invention.

Claims (10)

1. The method for improving the manufacturing quality of the steel anchor beam comprises a bottom plate, two side pull plates, two end baffle plates, two anchor head assemblies, a transverse baffle plate and a top plate, wherein the two side pull plates are respectively fixed on two opposite sides of the bottom plate, the two end baffle plates are respectively fixed on two opposite ends of the bottom plate and are connected with the bottom plate and the two side pull plates to form a beam body space, the two anchor head assemblies are respectively fixed on two opposite ends of the beam body space, the transverse baffle plate is fixedly arranged in the beam body space and positioned between the two anchor head assemblies, and the top plate is fixedly connected with the tops of the two side pull plates; the method is characterized in that: the bottom plate is provided with an inlet and an outlet for people to enter and exit the beam body space, and the method for improving the manufacturing quality of the steel anchor beam comprises the following steps:
s11, welding full penetration fillet welds between the bottoms of the side pull plates and the bottom plate so as to fix the two side pull plates on the two opposite sides of the bottom plate respectively;
s12, respectively assembling the anchor head assemblies at two opposite ends of the bottom plate: the anchor head assembly is fixedly connected with the bottom plate and the two side pulling plates through welding a penetration fillet weld with a blunt edge between the anchor head assembly and the bottom plate and a penetration fillet weld with a blunt edge between the anchor head assembly and the side plates;
s13, assembling end partition boards and transverse partition boards: welding a fillet between the end baffle and the bottom plate, and between the end baffle and the two side pull plates, so as to fix the end baffles at opposite ends of the bottom plate respectively; welding a fillet weld between the diaphragm plate and the bottom plate, and between the diaphragm plate and the two side pull plates to fix the diaphragm plate between the two anchor head assemblies;
s14, assembling a top plate: and welding the full penetration fillet weld between the top plate and the tops of the two side pull plates, and entering the beam body space through the inlet and the outlet in the process of welding the top plate so as to carry out back chipping on the full penetration fillet weld between the top plate and the two side pull plates.
2. The method for improving the manufacturing quality of a steel anchor beam according to claim 1, wherein full penetration fillet welds between the side pulling plates and the bottom plate are symmetrically welded by taking a connecting line of midpoints of two long sides of the side pulling plates as symmetry axes.
3. The method for improving the manufacturing quality of the steel anchor beam according to claim 1, wherein full penetration fillet welds between the top plate and the side pull plates are symmetrically welded by taking a connecting line of midpoints of two long sides of the top plate as a symmetry axis.
4. A method of improving the quality of steel anchor beams according to claim 1, wherein the thickness of the tie plate is increased by 8-12mm compared to a thickness of a tie plate of a steel anchor beam without the access opening.
5. The method of claim 1, wherein the anchor head assembly comprises a bearing plate, a plurality of anchor webs and an anchor pad, the tops of the anchor webs are welded to the bottom surface of the bearing plate, the anchor pad is welded to the top surface of the bearing plate, two opposite sides of the bearing plate are respectively welded to two side pull plates, the bottom surface of the anchor web is welded to the bottom plate, and two opposite sides of the anchor web are respectively welded to two side pull plates.
6. The method of claim 1, wherein each of the side tie plates includes a tie plate main plate and a tie plate stiffener, the bottom of the tie plate main plate being welded to the bottom plate, the top of the tie plate main plate being welded to the top plate, the anchor head assembly, the end baffles and the cross baffles being welded to the inner surface of the tie plate main plate, the tie plate stiffener being welded to the outer surface of the corresponding tie plate main plate.
7. A method of improving the quality of steel anchor beams according to claim 1, wherein the plate parts constituting the steel anchor beams are blanked by numerical control plasma cutting.
8. A method of improving the quality of steel anchor beams according to claim 1, wherein the steel anchor beams are further subjected to a painting operation after the steel anchor beams are assembled.
9. A steel anchor beam, characterized in that: the steel anchor beam comprises a bottom plate, two side pull plates, two end baffle plates, two anchor head assemblies, a diaphragm plate and a top plate, wherein the two side pull plates are respectively fixed on two opposite sides of the bottom plate, the two end baffle plates are respectively fixedly arranged at two opposite ends of the bottom plate and are connected with the bottom plate and the two side pull plates to form a beam body space in a surrounding mode, the two anchor head assemblies are respectively fixedly arranged at two opposite ends of the beam body space, the diaphragm plate is fixedly arranged in the beam body space and is positioned between the two anchor head assemblies, the top plate is fixedly connected with the two top parts of the side pull plates, and an inlet and an outlet which are used for people to enter and exit the beam body space are formed in the bottom plate.
10. The steel anchor beam of claim 9, wherein each of the side tie plates includes a tie plate main plate and a tie plate stiffener, the bottom of the tie plate main plate is welded to the bottom plate, the top of the tie plate main plate is welded to the top plate, the anchor head assembly, the end baffles and the cross baffles are welded to the inner surface of the tie plate main plate, and the thickness of the tie plate main plate is thickened by 8-12mm compared to a tie plate main plate of a steel anchor beam without the access opening.
CN202310160872.3A 2023-02-23 2023-02-23 Steel anchor beam and method for improving manufacturing quality of steel anchor beam Pending CN116163201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310160872.3A CN116163201A (en) 2023-02-23 2023-02-23 Steel anchor beam and method for improving manufacturing quality of steel anchor beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310160872.3A CN116163201A (en) 2023-02-23 2023-02-23 Steel anchor beam and method for improving manufacturing quality of steel anchor beam

Publications (1)

Publication Number Publication Date
CN116163201A true CN116163201A (en) 2023-05-26

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Application Number Title Priority Date Filing Date
CN202310160872.3A Pending CN116163201A (en) 2023-02-23 2023-02-23 Steel anchor beam and method for improving manufacturing quality of steel anchor beam

Country Status (1)

Country Link
CN (1) CN116163201A (en)

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