A steel-concrete composite beam welding anti-deformation device and construction technology

Abstract

The present invention discloses a device and construction process for preventing deformation during welding of steel-concrete composite beams. The device comprises a base plate, a plurality of equally spaced steel sections, a connecting plate with evenly distributed circular holes on the side, and a process pressure plate. The steel sections are mounted on the base plate, the connecting plate is welded to the top of the steel sections, the process pressure plate is movably mounted on the connecting plate to fix a T-beam placed on top of the connecting plate, a through hole is formed at the lower end of the side of the process pressure plate, and bolts are inserted through the through hole and the corresponding circular hole. The device and construction process for preventing deformation during welding of steel-concrete composite beams adopt a rigid fixing method to fix the T-beam to limit its deformation, thereby preventing or reducing welding deformation and avoiding damage to the surface of the T-beam. In addition, the construction process requires low practical experience, reduces construction difficulty, effectively avoids new or large deformation of the T-beam, and facilitates operation.

Description

Technical Field

[0001] The present invention relates to the technical field of welding deformation control, and in particular to a steel-concrete composite beam welding anti-deformation device and a construction process. Background Art

[0002] With the rapid development of bridge construction, steel structures have been widely used in bridges, buildings and other fields due to their advantages such as easy processing, beautiful appearance and long service life. The main components of steel structures [1] are welded H- and T-shaped steel columns, beams and braces. Steel-concrete composite beam bridges are increasingly being used in practical projects due to their superior structural performance and have a very broad development prospect.

[0003] However, the deformation of the T-beam of the steel-concrete composite beam bridge during the welding process is not easy to control. Since welding is only performed on one side of the flange, it is easy to cause angular deformation of the flange and twisting deformation of the web. In the past, deformation was mainly adjusted by mechanical correction and flame correction. However, when the mechanical correction equipment is used, excessive force can easily cause damage to the surface of the steel plate; flame correction [2] requires rich practical experience. Otherwise, improper correction position, method, and temperature control will cause new or greater deformation of the steel beam.

[0004] The present invention is referenced as follows:

[0005] [1] Zhang Pingli, “Control and Correction of Welding Deformation of Steel Structures”, Science and Technology Information, No. 9, 2011;

[0006] [2] Hainan Provincial Advanced Technical School, T-beam complex deformation correction technology. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the existing defects and provide a steel-concrete composite beam welding anti-deformation device and construction process. The T-beam is fixed by a rigid fixing method to limit its deformation, which can prevent or reduce welding deformation and avoid damage to the surface of the T-beam. In addition, the construction process has low requirements for practical experience, reduces the construction difficulty, can effectively prevent the T-beam from producing new or large deformation, is convenient to operate, and can effectively solve the problems in the background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction process for a steel-concrete composite beam welding anti-deformation device, comprising a bottom plate, a plurality of equally spaced steel sections, a connecting plate with evenly distributed circular holes on the side, and a process pressure plate, the steel section is installed on the bottom plate, the connecting plate is welded to the top of the steel section, the process pressure plate is movably installed on the connecting plate for fixing the T-beam placed on the top of the connecting plate, the lower end of the side of the process pressure plate is provided with a through hole, the through hole and the corresponding circular hole are penetrated by bolts, the process pressure plate is installed on the connecting plate by the bolts, and columnar plug rods penetrating at least two connecting plates are also penetrated in the circular holes, the connecting plate with the columnar plug rods comprises a connecting plate not welded to the steel section and a connecting plate welded to the steel section, there are at least two cylindrical plug rods, and the length of the cylindrical plug rods ensures that at least three connecting plates placed side by side and welded to the steel section can be simultaneously penetrated by the cylindrical plug rods, and the cylindrical plug rods are made of marble or stainless steel;

[0009] A construction process for a steel-concrete composite beam welding anti-deformation device comprises the following steps:

[0010] S1: Fabricate a base plate with studs: Use the pre-embedded method to fabricate a concrete slab with parallel studs, or install parallel studs on a flat steel plate.

[0011] S2: Tire frame fabrication: Weld the connecting plate to the top of the steel section to form a tire frame unit. The specific steps are as follows:

[0012] S21: Place several steel sections of equal size against the wall or close to the vertical plate, and keep any two steel sections parallel. Then place connecting plates one-to-one on the steel sections, and keep one end of the connecting plate against the wall or close to the vertical plate;

[0013] S22: Select a suitable cylindrical rod and insert the cylindrical rod into the circular hole on the side of the connecting plate at one end, and make the cylindrical rod pass through at least two connecting plates, and then weld the connecting plate with the cylindrical rod to the corresponding steel section;

[0014] S23: When the connecting plate into which the cylindrical rod is inserted is welded, the cylindrical rod is pushed toward the unwelded connecting plate, and when the connecting plates are welded, the cylindrical rod is inserted through at least one welded connecting plate, ensuring that the circular holes on the same portion of all connecting plates can overlap after welding;

[0015] S24: Open mounting holes corresponding to the studs on the bottom plate at the bottom of the steel section;

[0016] S3: Overall cradle construction: Select the appropriate number of cradle units according to the length of the T-beam to be welded, place the mounting holes on the steel corresponding to the studs, and fix the cradle units with nuts;

[0017] S4: Fixing the flange of the T-beam: Place the flange of the T-beam on the connecting plate, and place the process pressure plate on one side of the flange, keeping the two surfaces of the process pressure plate in contact with the upper surface and side surface of the flange respectively. Then move the flange, and the flange drives the process pressure plate to move along the length direction of the connecting plate until the through hole is aligned with the circular hole on the side of the connecting plate. Insert the bolts into the through hole and the circular hole to fix one side of the flange.

[0018] S5: T-beam web fixation: Place the T-beam web against the fixed process pressure plate, then place the process pressure plate on the other side of the flange, and bolt it onto the connecting plate again to press and fix the T-beam web and the other side of the flange. At this point, the process pressure plate and the connecting plate complete the rigid fixation of the T-beam to limit the deformation of the T-beam after welding;

[0019] S6: T-beam welding: weld the rigidly fixed T-beam, remove the process pressure plate after natural cooling, and then transfer the T-beam to the next process.

[0020] As a preferred technical solution of the present invention, the base plate is a concrete plate pre-embedded with parallel studs or a steel plate installed with parallel studs.

[0021] As a preferred technical solution of the present invention, the steel section is an H-shaped steel, and the lower wing plate of the steel section is provided with mounting holes corresponding to the studs, and the steel section is inserted into the studs through the mounting holes, and the studs are threaded with nuts for fixing the steel section.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] Compared with the traditional mechanical correction method, the steel-concrete composite beam welding anti-deformation device and construction process of the present invention adopt a rigid fixing method to pre-fix the T-beam to prevent deformation, which can effectively avoid damage to the surface of the T-beam; compared with the flame correction method, it can be operated without rich practical experience, and can avoid new or greater deformation on the T-beam.

[0024] The steel-concrete composite beam welding anti-deformation device and construction process of the present invention uses a rigid fixation method to fix the T-beam to limit its deformation, which can prevent or reduce welding deformation and avoid damage to the surface of the T-beam. In addition, this construction process has low requirements for practical experience, reduces the construction difficulty, can effectively prevent the T-beam from producing new or large deformation, and facilitates operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the midsole plate;

[0027] Figure 3 for Figure 1 Schematic diagram of the local structure;

[0028] Figure 4 for Figure 3 Schematic diagram of the rear view structure;

[0029] Figure 5 It is a schematic diagram of the construction process flow of the present invention;

[0030] Figure 6 Schematic diagram of S3 in the construction process of the present invention;

[0031] Figure 7 Schematic diagram of S4 in the construction process of the present invention;

[0032] Figure 8 Schematic diagram of S5 in the construction process of the present invention;

[0033] Figure 9 Schematic diagram of S2 in the construction process of the present invention;

[0034] Figure 10 for Figure 9 Schematic diagram of the front view structure;.

[0035] In the figure: 1 steel, 2 mounting hole, 3 connecting plate, 4 process pressure plate, 41 through hole, 42 bolt, 5 bottom plate, 51 stud, 52 nut. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-9The present invention provides a technical solution: a construction process of a steel-concrete composite beam welding anti-deformation device, comprising a bottom plate 5, a plurality of equally distributed steel sections 1, a connecting plate 3 with evenly distributed circular holes on the side, and a process pressure plate 4. The steel section 1 is installed on the bottom plate 5, the connecting plate 3 is welded to the top of the steel section 1, and the process pressure plate 4 is movably installed on the connecting plate 3 for fixing the T-beam placed on the top of the connecting plate 3. The lower end of the side of the process pressure plate 4 is provided with a through hole 41, and the through hole 41 and the corresponding circular hole are inserted with bolts 42. The process pressure plate 4 is installed on the connecting plate 3 by the bolts 42. The process pressure plate 4 can be fixed to the connecting plate 3 by the bolts 42. The process pressure plate 4 can fix the T-beam to the connecting plate 3, which is convenient for fixing the T-beam by a rigid fixing method, and can prevent or reduce the deformation of the T-beam during welding. The circular hole is also inserted with a columnar plug rod that penetrates at least two connecting plates 3. The connecting plate 3 with the columnar plug rod includes a connecting plate 3 not welded to the steel section 1 and a connecting plate 3 welded to the steel section 1.

[0038] Preferably, the base plate 5 is a concrete plate with pre-embedded parallel studs 51 or a steel plate with parallel studs 51 installed, so that the bottom of the steel section 1 is in a horizontal state at the same time, and the upper surfaces of all connecting plates 3 are kept in the same plane, so that the T-beam placed on the connecting plate 3 remains straight, avoiding the bending of the T-beam caused by the unevenness of the connecting plates 3 at different positions.

[0039] Preferably, the steel section 1 is an H-shaped steel, and a mounting hole 2 corresponding to the stud 51 is opened on the lower wing plate of the steel section 1, and the steel section 1 is inserted into the stud 51 through the mounting hole 2, and the stud 51 is threaded with a nut 52 for fixing the steel section 1. The H-shaped steel has good stability, so that the T-beam can be supported by the connecting plate 3.

[0040] Example 1: Figure 5 As shown, a construction process of a steel-concrete composite beam welding anti-deformation device, using the above-mentioned steel-concrete composite beam welding anti-deformation device, includes the following steps:

[0041] S1: Making a base plate 5 with studs 51: Using a pre-embedded method to make a concrete slab with parallel studs 51, or installing parallel studs 51 on a flat steel plate;

[0042] S2: Tire frame production: Weld the connecting plate 3 to the top of the steel section 1 to form a tire frame unit, such as Figure 9 and Figure 10 The specific steps are as follows:

[0043] S21: Place several sections of steel 1 of equal size against a wall or against a vertical plate, and keep any two sections of steel 1 parallel to each other. Then, place connecting plates 3 one-to-one on the sections of steel 1, and keep one end of the connecting plates 3 against the wall or against the vertical plate.

[0044] S22: Select a suitable cylindrical rod and insert the cylindrical rod into the circular hole on the side of the connecting plate 3 at one end, and make the cylindrical rod pass through at least two connecting plates 3, and then weld the connecting plate 3 with the cylindrical rod to the corresponding steel section 1;

[0045] S23: When the connection plate 3 into which the cylindrical rod is inserted is welded, the cylindrical rod is pushed toward the unwelded connection plate 3. When the connection plates 3 are welded, the cylindrical rod is inserted into at least one welded connection plate 3, ensuring that the circular holes at the same position on all the connection plates 3 can overlap after welding.

[0046] S24: Open mounting holes 2 corresponding to the studs 51 on the bottom plate of the steel section;

[0047] S3: If Figure 6 As shown, the overall tire frame is constructed: according to the length of the T-beam to be welded, select the appropriate number of tire frame units, place the mounting holes 2 on the steel section 1 corresponding to the studs 51, and fix the tire frame units with nuts 52;

[0048] S4: As Figure 7 As shown, the flange of the T-beam is fixed: the flange of the T-beam is placed on the connecting plate 3, and the process pressing plate 4 is placed on one side of the flange, keeping the two surfaces of the process pressing plate 4 in contact with the upper surface and the side surface of the flange respectively, and then the flange is moved, and the flange drives the process pressing plate 4 to move along the length direction of the connecting plate 3 until the through hole 41 is aligned with the circular hole on the side of the connecting plate 3, and the bolt 42 is inserted into the through hole 41 and the circular hole to fix one side of the flange;

[0049] S5: If Figure 8 As shown, the web of the T-beam is fixed: the web of the T-beam is placed close to the fixed process pressure plate 4, and then the process pressure plate 4 is placed on the other side of the flange, and the process pressure plate 4 is again installed on the connecting plate 3 using bolts 42, thereby pressing and fixing the web of the T-beam and the other side of the flange. At this time, the process pressure plate 4 cooperates with the connecting plate 3 to complete the rigid fixation of the T-beam to limit the deformation of the T-beam after welding;

[0050] S6: T-beam welding: weld the rigidly fixed T-beam, remove the process pressing plate 4 after natural cooling, and then transfer the T-beam to the next process.

[0051] Preferably, in S22, there are at least two cylindrical rods, and the length of the cylindrical rods is ensured to simultaneously penetrate at least three connecting plates 3 placed side by side and welded to the steel sections 1, which helps to keep the connecting plates 3 welded on different steel sections 1 at the same height, so that the upper surfaces of the connecting plates 3 are flush.

[0052] Preferably, the cylindrical rod is made of marble, and the marble is inserted into the circular hole of the connecting plate 3. When the connecting plate 3 welded on the steel section 1 is greatly deformed, the connecting plate 3 squeezes the cylindrical rod made of marble, thereby breaking the cylindrical rod made of marble, indicating that the connecting plate 3 is greatly deformed, and the deformation of the connecting plate 3 when welded to the steel section 1 can be detected.

[0053] Example 2: The difference from Example 1 is that the cylindrical rod is made of stainless steel. The cylindrical rod made of stainless steel is hard, not easy to break, and has a long service life.

[0054] The present invention adopts a rigid fixing method to fix the T-beam to limit its deformation, which can prevent or reduce welding deformation and avoid damage to the surface of the T-beam. In addition, the construction process has low requirements for practical experience, reduces the construction difficulty, can effectively prevent the T-beam from generating new or large deformation, and facilitates operation.

[0055] Any undisclosed portions of the present invention are prior art, and their specific structures, materials, and operating principles will not be described in detail. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction process for a steel-concrete composite beam welding anti-deformation device, characterized by: The invention comprises a bottom plate (5), a plurality of equally spaced steel sections (1), a connecting plate (3) with evenly distributed circular holes on the side, and a process pressing plate (4), wherein the steel section (1) is mounted on the bottom plate (5), the connecting plate (3) is welded to the top of the steel section (1), and the process pressing plate (4) is movably mounted on the connecting plate (3) for fixing a T-beam placed on the top of the connecting plate (3), and is characterized in that: a through hole (41) is opened at the lower end of the side of the process pressing plate (4), and bolts are inserted into the through hole (41) and the corresponding circular hole. (42), the process pressure plate (4) is mounted on the connecting plate (3) by means of bolts (42), and a columnar plug rod penetrating at least two connecting plates (3) is inserted into the circular hole, and the connecting plates (3) penetrating with the columnar plug rod include connecting plates (3) not welded to the steel section (1) and connecting plates (3) welded to the steel section (1), there are at least two cylindrical plug rods, and the length of the cylindrical plug rods is ensured to simultaneously penetrate at least three connecting plates (3) placed side by side and welded to the steel section (1), and the cylindrical plug rods are made of marble or stainless steel; The construction process of the steel-concrete composite beam welding anti-deformation device includes the following steps: S1: Making a base plate (5) with studs (51): using a pre-embedded method to make a concrete plate with parallel studs (51), or installing parallel studs (51) on a flat steel plate; S2: Tire frame production: Weld the connecting plate (3) to the top of the steel section (1) to form a tire frame unit. The specific steps are as follows: S21: Place a number of steel sections (1) of equal size against a wall or against a vertical plate, and keep any two steel sections (1) parallel to each other, and then place connecting plates (3) one-to-one on the steel sections (1), and keep one end of the connecting plates (3) against the wall or against the vertical plate; S22: Select a suitable cylindrical rod and insert the cylindrical rod into the circular hole on the side of the connecting plate (3) at one end, and make the cylindrical rod pass through at least two connecting plates (3), and then weld the connecting plate (3) penetrated by the cylindrical rod to the corresponding steel section (1); S23: After the connection plate (3) into which the cylindrical rod is inserted is welded, the cylindrical rod is pushed toward the unwelded connection plate (3), and when the connection plate (3) is welded, the cylindrical rod is inserted through at least one welded connection plate (3), ensuring that the circular holes at the same position on all the connection plates (3) can overlap after welding; S24: A mounting hole (2) corresponding to the stud (51) is provided on the bottom plate of the bottom of the steel section; S3: Overall tire frame construction: according to the length of the T-beam to be welded, select a suitable number of tire frame units, place the mounting holes (2) on the steel section (1) corresponding to the studs (51), and fix the tire frame units with nuts (52); S4: Fixing the flange of the T-beam: Place the flange of the T-beam on the connecting plate (3), and place the process pressing plate (4) on one side of the flange, keep the two surfaces of the process pressing plate (4) in contact with the upper surface and the side surface of the flange respectively, then move the flange, and the flange drives the process pressing plate (4) to move along the length direction of the connecting plate (3) until the through hole (41) is aligned with the circular hole on the side of the connecting plate (3), and insert the bolt (42) into the through hole (41) and the circular hole, thereby fixing one side of the flange; S5: Fixing the web of the T-beam: Place the web of the T-beam close to the fixed process pressure plate (4), then place the process pressure plate (4) on the other side of the flange, and again install the process pressure plate (4) on the connecting plate (3) through the bolt (42), thereby pressing and fixing the web of the T-beam and the other side of the flange. At this time, the process pressure plate (4) cooperates with the connecting plate (3) to complete the rigid fixation of the T-beam, so as to limit the deformation of the T-beam after welding; S6: T-beam welding: weld the rigidly fixed T-beam, remove the process pressure plate (4) after natural cooling, and then transfer the T-beam to the next process.

2. The construction process of the steel-concrete composite beam welding anti-deformation device according to claim 1 is characterized in that: The bottom plate (5) is a concrete plate pre-embedded with parallel studs (51) or a steel plate installed with parallel studs (51).

3. The construction process of the steel-concrete composite beam welding anti-deformation device according to claim 2 is characterized by: The section steel (1) is an H-section steel, and a mounting hole (2) corresponding to the stud (51) is provided on the lower wing plate of the section steel (1), and the section steel (1) is inserted into the stud (51) through the mounting hole (2), and a nut (52) for fixing the section steel (1) is threadedly connected to the stud (51).

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