First, the project overview.
Underwater steel pipe pile cutting is an important underwater operation method, which is mainly used for the maintenance, reinforcement, transformation and reconstruction of hydraulic structures such as bridges, docks, and docks. During the construction process, the quality and efficiency of underwater steel pipe pile cutting directly affect the progress and quality of the entire project. Therefore, selecting appropriate construction methods and equipment, strengthening construction management and quality control are the keys to the cutting construction of underwater steel pipe piles.
Second, the construction plan.
1.Preparation for construction.
Before construction, adequate preparation is required. First of all, it is necessary to understand the specific situation of the project, including the underwater terrain, water depth, flow rate, water quality, etc. Secondly, it is necessary to determine the construction plan, including cutting methods, equipment selection, personnel allocation, etc. Finally, it is necessary to prepare the equipment and materials required for construction, including cutting machines, water pumps, steel pipe piles, sand and gravel, etc.
2.Selection of cutting method.
There are three main ways to cut underwater steel pipe piles: flame cutting, plasma cutting and laser cutting. According to different engineering needs and actual conditions, choose the appropriate cutting method. This project adopts flame cutting method, which has the advantages of simple operation, low cost and wide range of application.
3.Construction process.
1) Positioning: Place the cutting machine above the steel pipe pile, and adjust the position and angle of the cutting machine.
2) Fixation: Fix the steel pipe pile on the cutting machine to prevent the steel pipe pile from moving or tilting during the cutting process.
3) Cutting: Start the cutting machine and flame cut the steel pipe pile. Depending on the need, different cutting speeds and depths can be taken.
4) Cleaning: After the cutting is completed, clean up the impurities and debris near the incision in time to ensure the quality and safety of the cutting.
5) Detection: Detect the cut steel pipe pile, including size, flatness, strength and other indicators. For areas that do not meet the requirements, corrections or re-cuts are made.
4.Quality control.
During the construction process, a series of measures need to be taken to ensure the quality and safety of the cut. First of all, it is necessary to ensure the integrity and accuracy of the equipment and avoid quality problems caused by equipment failure or operation error. Secondly, the cutting speed and depth should be strictly controlled to avoid deformation or cracking of the steel due to excessive heating or excessive cooling. Finally, the cut steel pipe piles should be tested and accepted in time to ensure that the design requirements and quality standards are met.
3. Security measures.
1.Personnel training: Carry out safety training and education for personnel involved in construction, and improve the safety awareness and operation skills of employees.
2.Equipment inspection: inspect and maintain the equipment before construction to ensure the integrity and safety of the equipment.
3.Emergency plan: Formulate emergency plan, including emergency measures for personnel, equipment failure, natural disasters, etc. During the construction process, it is necessary to pay close attention to weather changes and other emergencies, and take timely measures to ensure the safety of personnel and equipment.