Construction method for connection of large-size beam steel bar and section steel column
By setting up a mechanical connection sleeve between the steel column connecting plates to increase the welding space and combining manual arc welding technology, the problem of too small spacing between the welding points when the steel bars of large-sized beams and steel columns is solved, and the welding quality and operation are improved Convenience avoids additional costs and quality risks.
Patent Information
- Application Number
- CN202411403001.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2024-12-27
AI Technical Summary
When the steel bars of large-size beams are connected to steel columns, the spacing between welding points is too small, resulting in a small construction space and difficult to operate. The existing methods increase material costs or reduce welding quality.
By setting up a mechanical connection sleeve between the connecting plates of the steel columns, the welding space is increased, and combined with manual arc welding technology, the welding quality is ensured and some welding operations are replaced to improve the operating space and welding quality.
It effectively increases the welding space, improves the quality of steel bar connections, avoids the risks of increasing material costs and reducing welding quality, and achieves easy operation and high-quality welding effects.
Smart Images
Figure CN119195326A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of building beam construction, in particular to a construction method for connecting large-size beam reinforcement bars with section steel columns. Background Art
[0002] Since the steel bars of large-size beams are arranged densely, the spacing between welding points is too small when connected to steel columns, resulting in small welding construction space and difficulty in operation. Under conventional construction technology, it is necessary to bend a row of welded steel bars to leave operating space before welding the next row of steel bars. Therefore, repeated bending causes damage to the steel bars, and when the steel bars are thick, it also increases the difficulty of construction.
[0003] The solutions to the above problems are: Process 1: Adjust the steel column structure, optimize the connection nodes between the steel column and the large-size beam, and spatially stagger the dense connection points to increase the welding space of each connection point. Although this process solves the problem of small welding space, adjusting the steel column structure will increase the amount of steel used and increase material costs.
[0004] Process 2: Use welding tools that can operate in a small space for welding. This process uses special welding tools, which not only increases the investment cost of construction machinery, but also ordinary welding operators are not familiar with the welding tools and cannot guarantee the welding quality. Summary of the invention
[0005] In order to overcome the defects of the prior art and provide a beam construction method which is easy to operate and has strong adaptability, the present invention discloses a construction method for connecting large-size beam reinforcement bars with section steel columns.
[0006] The present invention achieves the purpose of the invention through the following technical solutions: A construction method for connecting large-size beam reinforcement and steel column, characterized by: implementing the following steps in sequence: Step 1: Measure and lay out: According to the arrangement of steel bars in the beam, place the connection point positioning line on the steel column; Step 2: Weld the connecting plate and connecting sleeve: Weld the connection plates and connection sleeves on the positioning line in sequence, and weld a row of connection sleeves between the two connection plates to ensure space for subsequent steel bar welding; Step 2: By setting a connecting sleeve in the middle of the connecting plate, the distance between the connecting plates is increased while meeting the connection strength between the beam reinforcement and the steel column, thereby increasing the operating space when welding the steel bars; Step 3: Steel bar processing: The ends of the steel bars involved in mechanical connection are processed; the ends of the steel bars are cut with a grinding wheel cutter, and the cuts should be smooth during cutting; the processed ends are threaded with a threading machine. After the threading is completed, the thread ends are inspected with a go gauge and a stop gauge to ensure that the size and quality of the thread ends meet the requirements; Step 4: Steel bar connection: Welding connection: Use manual arc welding to weld the steel bars and the connecting plate; Mechanical connection: Screw one end of the threaded steel bar into the sleeve until it can no longer be twisted. Use a torque wrench to screw the other end of the steel bar into the sleeve so that the steel bars at both ends are tightened in the center of the sleeve.
[0007] The construction method for connecting large-size beam reinforcement and profiled steel columns is characterized by: In step 2, before welding, remove water, scale, rust, oil and other debris from the surface to be treated at the welding groove of the cast steel node to expose the metallic luster.
[0008] The construction method for connecting large-size beam reinforcement and profiled steel columns is characterized by: In step three, the deviation of the cut steel bar ends shall not exceed.
[0009] The construction method for connecting large-size beam reinforcement and profiled steel columns is characterized by: In step four, the welding current of the welding connection is controlled between ~.
[0010] The construction method for connecting large-size beam reinforcement and profiled steel columns is characterized by: In step 4, the weld length of the welded connection shall not be less than 10 times the diameter of the steel bar, the weld width shall not be less than 0.8 times the diameter of the steel bar, and the weld height shall not be less than 0.3 times the diameter of the steel bar.
[0011] The present invention adopts mechanical connection to replace part of the welding operation, which increases the available space for each welding operation point, improves the welding quality, and avoids the additional costs and risks brought by the above-mentioned solution. Specifically, the present invention has the following beneficial effects: The present invention combines welding connection and mechanical connection, and welds a mechanical connection sleeve between two welding connection plates of the steel column instead of welding connection, thereby increasing the distance between the two welding connection plates, thereby increasing the working space and improving the quality of steel bar connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a construction schematic diagram of the present invention. DETAILED DESCRIPTION
[0013] The present invention is further described below by means of specific examples.
[0014] A construction method for connecting large-size beam reinforcement and steel columns, such as Figure 1 As shown, follow the steps below: Step 1: Measure and lay out: According to the arrangement of steel bars in the beam, place the connection point positioning line on the steel column; Step 2: Weld the connecting plate and connecting sleeve: Weld the connecting plates and connecting sleeves on the positioning line in sequence, and weld a row of connecting sleeves between the two connecting plates to ensure the subsequent welding space for steel bars; before welding, remove water, scale, rust, oil and other debris on the surface to be treated at the welding groove of the cast steel node, and expose the metallic luster; Step 2: By setting a connecting sleeve in the middle of the connecting plate, the distance between the connecting plates is increased while meeting the connection strength between the beam reinforcement and the steel column, thereby increasing the operating space when welding the steel bars; Step 3: Steel bar processing: The ends of the steel bars involved in mechanical connection are processed; the ends of the steel bars are cut with a grinding wheel cutter, and the cuts should be smooth and the deviation should not exceed; the processed ends are threaded with a threading machine. After the threading is completed, the thread ends are inspected with a go gauge and a stop gauge to ensure that the size and quality of the thread ends meet the requirements; Step 4: Steel bar connection: Welding connection: Use manual arc welding to weld the steel bar to the connecting plate. The welding current is controlled between 200 ~ 3000A. The weld length is not less than 10 times the diameter of the steel bar, the weld width is not less than 0.8 times the diameter of the steel bar, and the weld height is not less than 0.3 times the diameter of the steel bar. Mechanical connection: Screw one end of the threaded steel bar into the sleeve until it can no longer be twisted. Use a torque wrench to screw the other end of the steel bar into the sleeve so that the steel bars at both ends are tightened in the center of the sleeve.
Claims
1. A construction method for connecting large-size beam reinforcement and profiled steel columns, characterized in that: Follow the steps below to implement: Step 1: Measure and lay out: According to the arrangement of steel bars in the beam, place the connection point positioning line on the steel column; Step 2: Weld the connecting plate and connecting sleeve: Weld the connection plates and connection sleeves on the positioning line in sequence, and weld a row of connection sleeves between the two connection plates to ensure space for subsequent steel bar welding; Step 3: Steel bar processing: The ends of the steel bars involved in mechanical connection are processed; the ends of the steel bars are cut with a grinding wheel cutter, and the cuts should be smooth during cutting; the processed ends are threaded with a threading machine. After the threading is completed, the thread ends are inspected with a go gauge and a stop gauge to ensure that the size and quality of the thread ends meet the requirements; Step 4: Steel bar connection: Welding connection: Use manual arc welding to weld the steel bars and the connecting plate; Mechanical connection: Screw one end of the threaded steel bar into the sleeve until it can no longer be twisted. Use a torque wrench to screw the other end of the steel bar into the sleeve so that the steel bars at both ends are tightened in the center of the sleeve.
2. The construction method for connecting large-size beam reinforcement and profiled steel column as claimed in claim 1, characterized in that: In step 2, before welding, remove water, scale, rust, oil and other debris from the surface to be treated at the welding groove of the cast steel node to expose the metallic luster.
3. The construction method for connecting large-size beam reinforcement and profiled steel column as claimed in claim 2, characterized in that: In step three, the deviation of the cut steel bar ends shall not exceed.
4. The construction method for connecting large-size beam reinforcement and profiled steel column as claimed in claim 3 is characterized by: In step four, the welding current of the welding connection is controlled between ~.
5. The construction method for connecting large-size beam reinforcement and profiled steel column as claimed in claim 4, characterized in that: In step 4, the weld length of the welded connection shall not be less than 10 times the diameter of the steel bar, the weld width shall not be less than 0.8 times the diameter of the steel bar, and the weld height shall not be less than 0.3 times the diameter of the steel bar.