Method for quickly measuring deformation of butt welding of steel structures

Abstract

The present invention relates to the technical field of steel structure construction, and in particular to a method for quickly measuring the deformation of butt welding of steel structures, characterized in that the method comprises the following steps: 1, preparing a measuring device: the measuring device comprises a first scale plate (1), a first pointer (2), a second pointer (3), a second scale plate (4), scale plate legs (5), a connecting piece (6), and a horizontal adjusting piece (8). The device can be used to quickly and intuitively obtain measurement data without the need for data processing, thereby achieving full-process deformation detection and providing data support for the effective control of welding deformation. At the same time, the device has a simple structure, is light in weight and easy to carry, is easy to operate, has a simple principle, and also saves a certain amount of construction cost.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure construction, in particular to a method for quickly measuring the deformation of butt welding of steel structures. Background Art

[0002] Steel structure has the advantages of light weight, high strength, energy saving and environmental protection, and convenient construction. It is widely used in many construction fields such as high-rise, super high-rise, stadiums, transportation hubs, convention and exhibition centers. The main connection forms of steel structure are bolt connection, welding connection, and anchor connection. The most commonly used connection form is welding connection. During the construction process, not only the quality of the weld should be strictly controlled, but also attention should be paid to the control of welding deformation, especially butt welds. The weld grade is one level. During the welding process, not only the shrinkage deformation of the weld should be considered, but also the changes in structural dimensions caused by uneven shrinkage of the weld should be strictly controlled. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned problems and to propose a method for concretizing the welding deformation amount, realizing the whole process deformation detection, and providing effective data support for the control of welding deformation.

[0004] In order to achieve the above object, the present invention is achieved in the following ways:

[0005] A method for quickly measuring the deformation of butt welding of steel structures, comprising:

[0006] Step 1, preparing a measuring device: the measuring device comprises a first scale plate (1), a first pointer (2), a second pointer (3), a second scale plate (4), a scale plate leg (5), a connecting piece (6), and a horizontal adjusting piece (8); wherein the first scale plate (1) is an angle deformation measuring plate, made of a 6 mm stainless steel plate, in a semicircular shape, with a scale plate diameter D=1000 mm, the outer side of the scale plate is evenly divided into 180°, and scale lines are engraved by laser; the first pointer (2) is used to indicate the angle change value, made of a 3 mm stainless steel plate, and has a length of 450 mm; the second pointer (3) is used to indicate the welding shrinkage value, made of a 3 mm stainless steel plate, in a Z shape, and installed on the second scale plate (4), with the end fixed to the steel member on either side of the weld; the second scale plate (4) is a welding shrinkage deformation measuring plate, made of a 4 mm stainless steel plate, with a length of 1000 mm and a width of 50 mm, the midpoint position in the length direction is set as the 0 scale line, and the two sides are marked with millimeters. The scale plate leg (5) is used to support the entire device and also serves as a connection between the device and the component. It is made of a square steel tube with a length of 200 mm and a cross-sectional size of 20*20. The end is sealed with a steel plate with the same cross-sectional size and a thickness of 4 mm. A hole is opened at the center of the head plate so that the exposed thread of the horizontal adjustment member (8) can be screwed in normally. The connecting member (6) is made of a round steel with a diameter of 10 mm. The two ends of the connecting member are threaded to facilitate the connection of the first pointer (2) and the accessory (7) as a whole, thereby completing the angle measurement together. The accessory (7) is made of a 4 mm stainless steel plate, with a length of 1000 mm and a width of 20 mm. It is used to realize the rotation of the first pointer (2). The accessory (7) and the first pointer (2) are connected as a whole through the connecting member (6). The accessory (7) is fixed to the component on either side of the weld. At the same time, the scale plate leg (5) on the other side of the weld is fixed to the component (such as Figure 1 As shown), when the component splicing is deformed due to welding operation, the first pointer (2) will be driven to rotate, thereby displaying the angle change value. Take the accessory (7) fixed on the right side of the weld as an example: if the pointer (2) deflects to the right, that is, the reading is less than 90°, it means that the component splicing angle is contracted; if the first pointer (2) deflects to the left, that is, the reading is greater than 90°, it means that the component splicing angle is expanded. When the accessory (7) is fixed on the left side of the weld, the result is the opposite; the horizontal adjustment member (8) is used to adjust the horizontality of the equipment. The accessories include: a square steel pipe with a length of 20mm and a cross-section of 20*20 and a round steel with a length of 60mm and a diameter of 12mm. Both ends of the square steel pipe are sealed with a steel plate with the same cross-section and a thickness of 4mm. A hole with the same diameter as the round steel is opened at the midpoint of the end plate, and the round steel is inserted into it. The joint is fixed with structural adhesive. The exposed length of both ends is 20mm, and the exposed part is threaded;

[0007] Step 2: Measurement work:

[0008] Step 2.1, place the measuring equipment horizontally above the weldment, and ensure the horizontality of the equipment by adjusting the adjustment part (8);

[0009] Step 2.2, securely fix the end of the second pointer (3) on the component on either side of the weld, and before fixing, adjust the position of the second pointer (3) so that it coincides with the 0 scale line;

[0010] Step 2.3, fix the accessory (7) on the component on either side of the weld, and before fixing, adjust the position of the first pointer (2) so that it is directly opposite to the 90° scale line, and record it as the initial reading A;

[0011] Step 2.4: After the preparation work is completed, the welding operation is officially started. After the welding operation is completed, the corresponding values ​​of the two dials are read respectively. The final reading of the first dial (1) is recorded as B, and the final reading of the second dial (4) is recorded as X;

[0012] Step 2.5, data collation: 1. The welding deformation value is C=BA; 2. The welding shrinkage deformation value is X.

[0013] For the control of welding deformation, the traditional operation method relies more on experience during the construction process. The methods usually adopted are: 1. Pre-reinforcement to reduce welding deformation; 2. Adjust the welding sequence, usually using symmetrical welding. No matter which method is used, it is impossible to visualize the deformation of the welding process and the deformation situation cannot be intuitively seen, which is not conducive to better control of deformation.

[0014] The device can quickly and intuitively obtain measurement data without data processing, realizes deformation detection throughout the process, and provides data support for the effective control of welding deformation. At the same time, the device has a simple structure, light weight, easy to carry, easy to operate, simple principle, and also saves a certain amount of construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Measurement schematic front view.

[0016] Figure 2 : Measurement schematic top view.

[0017] Figure 3 : Measurement schematic side view.

[0018] Figure 4 :Adjustment component node diagram.

[0019] Figure 5 : Top view of the device.

[0020] Figure 6 : Front view of the device.

[0021] Figure 7 : Side view of the device. DETAILED DESCRIPTION

[0022] The present invention is further described below by means of specific examples.

[0023] like Figure 1 to Figure 7 As shown, a method for quickly measuring the deformation of butt welding of steel structures comprises:

[0024] Step 1, preparing a measuring device: the measuring device comprises a first scale plate (1), a first pointer (2), a second pointer (3), a second scale plate (4), a scale plate leg (5), a connecting piece (6), and a horizontal adjusting piece (8); wherein the first scale plate (1) is an angle deformation measuring plate, made of a 6 mm stainless steel plate, in a semicircular shape, with a scale plate diameter D=1000 mm, the outer side of the scale plate is evenly divided into 180°, and scale lines are engraved by laser; the first pointer (2) is used to indicate the angle change value, made of a 3 mm stainless steel plate, and has a length of 450 mm; the second pointer (3) is used to indicate the welding shrinkage value, made of a 3 mm stainless steel plate, in a Z shape, and installed on the second scale plate (4), with the end fixed to the steel member on either side of the weld; the second scale plate (4) is a welding shrinkage deformation measuring plate, made of a 4 mm stainless steel plate, with a length of 1000 mm and a width of 50 mm, the midpoint position in the length direction is set as the 0 scale line, and the two sides are marked with millimeters. The scale plate leg (5) is used to support the entire device and also serves as a connection between the device and the component. It is made of a square steel tube with a length of 200 mm and a cross-sectional size of 20*20. The end is sealed with a steel plate with the same cross-sectional size and a thickness of 4 mm. A hole is opened at the center of the head plate so that the exposed thread of the horizontal adjustment member (8) can be screwed in normally. The connecting member (6) is made of a round steel with a diameter of 10 mm. The two ends of the connecting member are threaded to facilitate the connection of the first pointer (2) and the accessory (7) as a whole, thereby completing the angle measurement together. The accessory (7) is made of a 4 mm stainless steel plate, with a length of 1000 mm and a width of 20 mm. It is used to realize the rotation of the first pointer (2). The accessory (7) and the first pointer (2) are connected as a whole through the connecting member (6). The accessory (7) is fixed to the component on either side of the weld. At the same time, the scale plate leg (5) on the other side of the weld is fixed to the component (such as Figure 1As shown), when the component splicing is deformed due to welding operation, the first pointer (2) will be driven to rotate, thereby displaying the angle change value. Take the accessory (7) fixed on the right side of the weld as an example: if the pointer (2) deflects to the right, that is, the reading is less than 90°, it means that the component splicing angle is contracted; if the first pointer (2) deflects to the left, that is, the reading is greater than 90°, it means that the component splicing angle is expanded. When the accessory (7) is fixed on the left side of the weld, the result is the opposite; the horizontal adjustment member (8) is used to adjust the horizontality of the equipment. The accessories include: a square steel pipe with a length of 20mm and a cross-section of 20*20 and a round steel with a length of 60mm and a diameter of 12mm. Both ends of the square steel pipe are sealed with a steel plate with the same cross-section and a thickness of 4mm. A hole with the same diameter as the round steel is opened at the midpoint of the end plate, and the round steel is inserted into it. The joint is fixed with structural adhesive. The exposed length of both ends is 20mm, and the exposed part is threaded;

[0025] Step 2: Measurement work:

[0026] Step 2.1, place the measuring equipment horizontally above the weldment, and ensure the horizontality of the equipment by adjusting the adjustment part (8);

[0027] Step 2.2, securely fix the end of the second pointer (3) on the component on either side of the weld, and before fixing, adjust the position of the second pointer (3) so that it coincides with the 0 scale line;

[0028] Step 2.3, fix the accessory (7) on the component on either side of the weld, and before fixing, adjust the position of the first pointer (2) so that it is directly opposite to the 90° scale line, and record it as the initial reading A;

[0029] Step 2.4: After the preparation work is completed, the welding operation is officially started. After the welding operation is completed, the corresponding values ​​of the two dials are read respectively. The final reading of the first dial (1) is recorded as B, and the final reading of the second dial (4) is recorded as X;

[0030] Step 2.5, data collation: 1. The welding deformation value is C=BA; 2. The welding shrinkage deformation value is X.

[0031] For the control of welding deformation, the traditional operation method relies more on experience during the construction process. The methods usually adopted are: 1. Pre-reinforcement to reduce welding deformation; 2. Adjust the welding sequence, usually using symmetrical welding. No matter which method is used, it is impossible to visualize the deformation of the welding process and the deformation situation cannot be intuitively seen, which is not conducive to better control of deformation.

[0032] The device can quickly and intuitively obtain measurement data without data processing, realizes deformation detection throughout the process, and provides data support for the effective control of welding deformation. At the same time, the device has a simple structure, light weight, easy to carry, easy to operate, simple principle, and also saves a certain amount of construction cost.

Claims

1. A method for quickly measuring the deformation of butt welding of steel structures, characterized by: include Step 1, preparing a measuring device: the measuring device comprises a first scale plate (1), a first pointer (2), a second pointer (3), a second scale plate (4), a scale plate leg (5), a connecting piece (6), and a horizontal adjustment piece (8); wherein the first scale plate (1) is an angle deformation measuring plate, made of a 6 mm stainless steel plate, in a semicircular shape, with a scale plate diameter D=1000 mm, the outer side of the scale plate is evenly divided into 180°, and scale lines are engraved by laser; the first pointer (2) is used to indicate the angle change value, is made of a 3 mm stainless steel plate, and has a length of 450 mm; the second pointer (3) is used to indicate the welding shrinkage value, is made of a 3 mm stainless steel plate, is in a Z shape, and is installed on the second scale plate (4), the end is fixed on the steel component on either side of the weld; the second scale plate (4) is a welding shrinkage deformation measuring plate, made of 4mm stainless steel plate, with a length of 1000mm and a width of 50mm. The midpoint of the length direction is set as the 0 scale line, and the two sides are evenly divided into several parts in millimeters. All scale lines are laser engraved; the scale plate legs (5) are used to support the entire equipment and also play the role of connecting the equipment to the component; they are made of square steel pipes with a length of 200mm and a cross-sectional size of 20*20, and the ends are sealed with steel plates of the same cross-section and thickness of 4mm. A hole is opened in the center of the head plate so that the exposed threads of the horizontal adjustment piece (8) can be screwed in normally; the connecting piece (6) is made of a 10m diameter The first pointer (2) and the accessory (7) are made of 4 mm stainless steel, and the two ends of the connecting piece are threaded to facilitate the connection of the first pointer (2) and the accessory (7) to complete the angle measurement together; the accessory (7) is made of 4 mm stainless steel plate, with a length of 1000 mm and a width of 20 mm, and is used to realize the rotation of the first pointer (2). The accessory (7) and the first pointer (2) are connected as a whole through the connecting piece (6). The accessory (7) is fixed to the component on either side of the weld, and the dial leg (5) on the other side of the weld is fixed to the component. When the component is deformed due to the welding operation, the first pointer (2) will be driven to rotate, thereby displaying the angle change value; in this way, when the accessory (7) is fixed to the right side of the weld: If the pointer (2) deflects to the right, that is, the reading is less than 90°, it indicates that the component splicing angle is contracted. If the first pointer (2) deflects to the left, that is, the reading is greater than 90°, it indicates that the component splicing angle is expanded. When the accessory (7) is fixed to the left side of the weld, the result is the opposite. A horizontal adjustment member (8) is used to adjust the horizontality of the equipment. The accessories include: a square steel pipe with a length of 20 mm and a cross-section of 20*20 and a round steel with a length of 60 mm and a diameter of 12 mm. Both ends of the square steel pipe are sealed with a steel plate with the same cross-section and a thickness of 4 mm. A hole with the same diameter as the round steel is opened at the midpoint of the end plate, and the round steel is inserted into the hole. The connecting part is fixed with structural adhesive. The exposed length of both ends is 20 mm, and the exposed part is threaded. Step 2: Measurement work: Step 2.1, place the measuring equipment horizontally above the weldment, and ensure the horizontality of the equipment by adjusting the adjustment part (8); Step 2.2, securely fix the end of the second pointer (3) on the component on either side of the weld, and before fixing, adjust the position of the second pointer (3) so that it coincides with the 0 scale line; Step 2.3, fix the accessory (7) on the component on either side of the weld, and before fixing, adjust the position of the first pointer (2) so that it is directly opposite to the 90° scale line, and record it as the initial reading A; Step 2.4: After the preparation work is completed, the welding operation is officially started. After the welding operation is completed, the corresponding values ​​of the two dials are read respectively. The final reading of the first dial (1) is recorded as B, and the final reading of the second dial (4) is recorded as X; Step 2.5, data collation:

1. The welding deformation value is C=BA; 2. The welding shrinkage deformation value is X.

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