Welding Method for Adjacent Steel Plates of Steel Plate Wall

Abstract

The present invention relates to the technical field of building construction, specifically a welding method for adjacent steel plates of a steel plate wall. The steps are as follows: The steel plates are processed in advance in a processing factory. A number of U-shaped fixing seats are longitudinally and spacedly fixed along the vertical joints. Under the horizontal joints of the steel plate wall, a number of L-shaped fixing seats are longitudinally and spacedly fixed along the long direction of the horizontal joints. At the same time, inserts and channel steels are prepared; the steel plates are hoisted to the designated positions; for temporary fixing, the joints are first spot-welded for temporary fixing; first, the vertical joints of the steel plate wall are welded, and immediately after welding, the inserts are inserted; then, the horizontal joints are welded. Before welding, a full-length channel steel is placed in a number of slots formed by the L-shaped fixing seats on one side, and the horizontal joints are welded from the other side, and the two sides are the same; after welding, the I-beams are hoisted out; the stiffening structure provided by the present invention plays a role in fixing and improving the stiffness of the components, reducing the welding deformation of the steel plate wall, accelerating the construction progress, and improving the finished product quality of the steel plate wall.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and specifically relates to a welding method for adjacent steel plates of a steel plate wall. Background Art

[0002] Currently, during the installation of steel-concrete steel plate walls in construction projects such as hospitals, the process is usually as follows: confirm the positions of the steel plate wall and steel column members, set embedded steel plates, hoist the steel plates to the designated positions, first spot-weld the adjacent steel plates for fixation, and then perform overall welding; during the construction process, when the steel plate thickness is relatively large, the storey height is relatively high, and the welding seams between adjacent steel plates are relatively long; due to the long and thin steel plate wall components with poor self-rigidity, they are prone to bending deformation during welding, and the verticality and flatness of the steel plate wall at the weld position are relatively poor. During the subsequent processes of steel bar binding, formwork closing, and concrete pouring, it is necessary to readjust the verticality and flatness of the steel plate wall again, resulting in low construction efficiency and poor overall rigidity of the formed steel plate wall, which is not conducive to the welding operation of the next-layer steel components. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a welding method for adjacent steel plates of a steel plate wall that can avoid readjusting the steel plate wall during the subsequent processes of steel bar binding, formwork closing, and concrete pouring, accelerate the overall construction speed, and improve the forming quality of the steel plate wall.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] 1. A welding method for adjacent steel plates of a steel plate wall, comprising the following steps:

[0006] S1: Process the components of the steel plate wall in a processing factory, including steel plates;

[0007] S2: Transport the components to the construction site, position the specific position of the steel plate wall according to the wall control line, and hoist the steel plates to the designated positions according to the detailed drawings;

[0008] S3: After the positions are determined, adjust the verticality of the steel plate wall, perform temporary fixation, and first spot-weld for temporary fixation at the joints;

[0009] S4: After the temporary fixation is completed, first weld the vertical joints of the steel plate wall;

[0010] S5: Then perform horizontal joint welding;

[0011] In step S1, the specific processing of the steel plate is as follows: on the left and right steel plates of the vertical joint of the steel plate wall, a number of U-shaped fixing seats are longitudinally and spacedly fixed along the vertical joint. The U-shaped fixing seats are symmetric in pairs with respect to the vertical joint, and jacks are formed between the U-shaped fixing seats and the steel plate; on the front and back sides of the lower steel plate of the horizontal joint of the steel plate wall, a number of L-shaped fixing seats are longitudinally and spacedly fixed along the length direction of the horizontal joint. The L-shaped fixing seats and the steel plate form a slot opening upward, and the height of the upper edge of the L-shaped fixing seat is not higher than the height of the horizontal joint; at the same time, prepare inserts and channel steels adapted to the jacks and slots.

[0012] In step S4, when welding the vertical joint of the steel plate wall, after the welding at the position where the U-shaped fixing seat is located is completed, the insert is immediately inserted and fixed.

[0013] In step S5, the welding process of the horizontal joint is as follows: before welding, a full-length channel steel is placed in a number of slots formed by the L-shaped fixing seats on one side, and the horizontal joint is welded from the other side; after welding is completed, the channel steel on the opposite side is taken out and placed in a number of slots on the side where welding is completed, and then the horizontal joint on the side where welding is not completed is welded.

[0014] Finally, S6: After the welding of the horizontal joint is completed and cooled, the I-beam is lifted out.

[0015] Furthermore, in step S1, it is also necessary to fix a full-length stiffening plate parallel to the horizontal joint on the upper side of the horizontal joint of the steel plate wall in the factory, and the lower edge of the stiffening plate is at least 20 mm away from the horizontal joint.

[0016] Furthermore, the insert is composed of two wedge-shaped blocks, and the inclined surfaces of the two wedge-shaped blocks face each other.

[0017] Furthermore, notches and roughening treatments are performed on the contact surfaces of the two wedge-shaped blocks and the contact surfaces between the wedge-shaped blocks and the steel plate.

[0018] The present invention adopting the above technical solution, compared with the prior art, its prominent features are:

[0019] Through the U-shaped fixing seat and the insert, the steel plates on both sides of the vertical weld (after the vertical joint is welded) can be further fixed; through the L-shaped fixing seat and the channel steel, the stiffness of the lower steel plate of the horizontal weld (after the horizontal joint is welded) can be supplemented to reduce welding deformation, providing better working conditions for the welding of the next layer of steel components; by reducing welding deformation, the stiffness of the steel plate wall is further improved, and during the later process of steel bar binding, formwork closing, and concrete pouring, it is not necessary to readjust the perpendicularity and flatness of the steel plate wall, which speeds up the construction progress and improves the finished product quality of the steel plate wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the steel plate wall welding in the embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the vertical joint in the embodiment of the present invention;

[0022] Figure 3 It is Figure 2 a schematic cross-sectional structural diagram at A-A in

[0023] Figure 4 It is Figure 2 a schematic cross-sectional structural diagram at B-B in

[0024] Figure 5 a schematic side view structural diagram of the vertical joint in the embodiment of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the horizontal joint in the embodiment of the present invention;

[0026] Figure 7 It is Figure 6 a schematic cross-sectional structural diagram at C-C in

[0027] Figure 8 a schematic side view structural diagram of the horizontal joint in the embodiment of the present invention.

[0028] Explanation of reference numerals: 1. Vertical joint; 2. Horizontal joint; 3. U-shaped fixing seat; 4. Insert bar; 401. Wedge block; 5. L-shaped fixing seat; 6. Channel steel; 7. Steel plate; 8. Shot-blasted surface; 9. Hook; 10. Stiffening plate. Detailed implementation manners

[0029] The following further elaborates the present invention in combination with specific embodiments, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0030] As Figures 1 to 8 shown, this embodiment provides a welding method for adjacent steel plates of a steel plate wall, wherein the steel plate wall is welded by a plurality of steel plates 7, and there are vertical joints 1 and horizontal joints 2 between the steel plates 7. The method includes the following steps:

[0031] S1: Process the steel plates 7 in the processing factory in advance. As Figures 2 to 5 shown, on the left and right steel plates 7 of the vertical joint 1 of the steel plate wall, a plurality of U-shaped fixing seats 3 are longitudinally and spacedly fixed along the vertical joint 1. The U-shaped fixing seats 3 are symmetrically arranged in pairs with respect to the vertical joint 1, and jacks are formed between the U-shaped fixing seats 3 and the steel plates 7; on the front and rear sides of the lower steel plate 7 of the horizontal joint 2 of the steel plate wall, a plurality of L-shaped fixing seats 5 are longitudinally and spacedly fixed along the long direction of the horizontal joint 2. The L-shaped fixing seats 5 and the steel plates 7 form upward-opening slots, and the height along the L-shaped fixing seats 5 is not higher than the height of the horizontal joint 2; at the same time, prepare insert bars 4 and channel steels 6 adapted to the jacks and slots;

[0032] In this embodiment, the steel plate 7 used for the steel plate wall is a steel plate 7 with a thickness of 10 mm; the open end of the U-shaped fixing seat 3 is fixedly welded to the steel plate 7; the width of the U-shaped fixing seat 3 is 50 mm, the longitudinal spacing of the U-shaped fixing seat 3 is 400 mm, and the spacing between two symmetric U-shaped fixing seats 3 is 100 mm - 200 mm; the horizontal part of the L-shaped fixing seat 5 is welded and fixed to the steel plate 7; the length of the L-shaped fixing seat 5 is 200 mm - 400 mm, and the spacing between the L-shaped fixing seats 5 is 200 mm; the channel steel 6 is of model 10# channel steel 6; the materials of the U-shaped fixing seat 3, the L-shaped fixing seat 5, the insert strip 4, and the channel steel 6 are all made of metal structure and of Q355B model.

[0033] S2: Transport the processed steel plate 7, insert strip 4, and channel steel 6 to the construction site, position the specific position of the steel plate wall according to the wall control line, and hoist the steel plate 7 to the designated position according to the detailed drawing.

[0034] S3: After the position is determined, adjust the verticality of the steel plate wall. After the adjustment is completed, temporarily fix it with a diagonal brace, and first spot-weld the joint for temporary fixation.

[0035] S4: After the temporary fixation is completed, first weld the vertical joint 1 of the steel plate wall. After the welding at the position where the U-shaped fixing seat 3 is located is completed, immediately insert the insert strip 4 for fixation.

[0036] S5: Then carry out the welding of the horizontal joint 2. Before welding, first place a full-length channel steel 6 in a number of slots formed by one side of the L-shaped fixing seat 5, and weld the horizontal joint 2 from the other side; after the welding is completed, take out the channel steel 6 on the opposite side and put it into a number of slots on the side where the welding is completed, and then weld the horizontal joint 2 on the side where the welding is not completed; among them, the upper edges of the L-shaped fixing seat 5 and the channel steel 6 are flush, and for the convenience of welding operation, its height is 10 mm lower than the height where the horizontal joint 2 is located.

[0037] S6: After the welding of the horizontal joint 2 is completed and cooled, hoist out the I-beam for turnover and reuse.

[0038] Furthermore, in step S1, it is also necessary to fix a full-length stiffening plate 10 parallel to the horizontal joint 2 on the upper side of the horizontal joint 2 of the steel plate wall in the factory. The thickness of the stiffening plate 10 is the same as that of the steel plate 7, both are steel plates 7 with a thickness of 10 mm; the lower edge of the stiffening plate 10 is at least 20 mm away from the horizontal joint 2; in this embodiment, the interval between the lower edge of the stiffening plate 10 and the horizontal joint 2 is 50 mm so as not to affect the welding operation and the hoisting of the lower channel steel 6; it can supplement the stiffness of the steel plate 7 on the upper side of the horizontal joint 2 to reduce welding deformation.

[0039] Furthermore, the insert strip 4 is composed of two wedge-shaped blocks 401, and the inclined surfaces of the two wedge-shaped blocks 401 face each other; in this embodiment, the length of the insert strip 4 is 270 mm and it is composed of two wedge-shaped blocks 401 with a length of 270 mm, asFigure 5 As shown, the inclined surfaces of the two wedge blocks 401 face each other, forming the long strip-shaped first insert 4.

[0040] Furthermore, knurling treatments are performed on both the contact surfaces of the two wedge blocks 401 and the contact surfaces between the wedge blocks 401 and the steel plate 7 to form the knurled surfaces 8, which increases the friction between the wedge blocks 401, between the steel plate 7 and the wedge blocks 401, and has a better fixing effect.

[0041] Furthermore, a lifting hook 9 is pre-welded on the channel steel 6, which is convenient for lifting out the channel steel 6 in S5 and S6.

[0042] Through the U-shaped fixing seat 3 and the insert 4, the present invention can further fix the steel plates 7 on both sides of the vertical weld (after the vertical joint 1 is welded), and at the same time disperse heat, weaken the residual stress caused by temperature, and reduce welding deformation. Through the L-shaped fixing seat 5 and the channel steel 6, the stiffness of the steel plate 7 on the lower side of the horizontal weld (after the horizontal joint 2 is welded) can be supplemented to reduce welding deformation. At the same time, it provides better working conditions for the welding of the next layer of steel members. The stiffening structure provided by the present invention plays a role in fixing and improving the stiffness of the member, reduces the welding deformation of the steel plate wall, and improves the finished product quality of the steel plate wall.

[0043] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention. Any equivalent changes made by using the content of the specification and drawings of the present invention are included in the scope of rights of the present invention.

Claims

1. A welding method for adjacent steel plates of a steel plate wall, comprising the following steps: S1: Process the components of the steel plate wall in a processing factory, including steel plates; S2: Transport the components to the construction site, position the specific location of the steel plate wall according to the wall control line, and hoist the steel plates to the designated positions according to the detailed drawings; S3: After the position is determined, adjust the verticality of the steel plate wall and make temporary fixation. First, spot-weld the joints for temporary fixation; S4: After the temporary fixation is completed, first weld the vertical joints of the steel plate wall; S5: Then carry out the horizontal joint welding; It is characterized in that In step S1, the specific processing of the steel plate is as follows: On the left and right steel plates of the vertical joint of the steel plate wall, a number of U-shaped fixing seats are longitudinally and spacedly fixed along the vertical joint. The U-shaped fixing seats are symmetrically arranged in pairs with respect to the vertical joint, and jacks are formed between the U-shaped fixing seats and the steel plates; On the front and back sides of the lower steel plate of the horizontal joint of the steel plate wall, a number of L-shaped fixing seats are longitudinally and spacedly fixed along the long direction of the horizontal joint. The L-shaped fixing seats and the steel plates form slots with openings upward, and the height of the upper edge of the L-shaped fixing seats is not higher than the height of the horizontal joint; At the same time, prepare inserts and channel steels adapted to the jacks and slots; In step S4, when welding the vertical joint of the steel plate wall, immediately insert the insert for fixation after the welding at the position where the U-shaped fixing seat is located is completed; In step S5, the process of horizontal joint welding is as follows: Before welding, first place a full-length channel steel in a number of slots formed by the L-shaped fixing seats on one side, and weld the horizontal joint from the other side; After welding is completed, take out the channel steel on the opposite side, put it into a number of slots on the side where welding is completed, and then weld the horizontal joint on the side where welding is not completed; Finally, S6: After the horizontal joint welding is completed and cooled, hoist out the I-beam.

2. The welding method for adjacent steel plates of a steel plate wall according to claim 1, It is characterized in that: In step S1, it is also necessary to fix a full-length stiffening plate parallel to the horizontal joint on the upper side of the horizontal joint of the steel plate wall in the factory, and the lower edge of the stiffening plate is at least 20 mm away from the horizontal joint.

3. The welding method for adjacent steel plates of a steel plate wall according to claim 1, It is characterized in that: The insert is composed of two wedge-shaped blocks, and the inclined surfaces of the two wedge-shaped blocks face each other.

4. The welding method for adjacent steel plates of a steel plate wall according to claim 3, It is characterized in that: Scratch texturing treatment is performed on the contact surfaces of the two wedge-shaped blocks and the contact surfaces between the wedge-shaped blocks and the steel plates.

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