1. It is first necessary to grasp the necessary planning and skill requests, including the number of pipe pile types, the pile weight and type, the planned pile length to be driven, the construction site environment and geological conditions, and the penetration request at the time of harvesting ( This is the key point and so on.

       2. The quality of the production of the pipe piles and the quality of the products are ensured. Before the construction of the pipe piles, the detailed materials of these aspects are copied to the supervisors, the owners, the planning, etc., at least the approval of the supervisors. Together, regarding the appearance of the piles, it is necessary to check the quality of the external surface of the piles. There must be no defects such as piles that are not straight, exposed surfaces or pockmarks. If any quality problems are found, it is necessary to produce them. The factory returned.

       3. According to the actual situation of the construction site and planned resettlement, the construction of the pipe pile point construction road is planned before the start of construction, according to the scope of “first center and the surrounding area, first deep and then shallow, close to the existing building. Organize the criteria such as single pile after the pile, uniform symmetry beating, avoiding over-fire gathering. This road can be listed as a single map, and can also be used as a component of the pipe pile construction plan, and will be copied to the supervision and inspection in time before the construction begins. Together, the test piles should be organized at the beginning of the construction, and the representative piles 1 to 3 should be selected (determined according to the percentage of the total number of piles required for construction. The detailed construction rules of the location area may directly consult the planner. As a test pile, the owner, planning, supervision, and general subcontracting construction units are all necessary to be present when the pile is tested. The planner understands the penetration of the pipe pile construction based on the reaction of the experimental pile in the practice of hammering. The numerical value is recorded in the test pile record as a certificate for future construction inspection.

       4. Before the beginning of the pipe pile construction, it is necessary to recognize whether the set position of each pile point is clear and whether the accuracy is in line with the planning and standard request, and whether it has been obtained for supervision and inspection.

       5. After the above work is completed, the construction of the pipe pile is officially started. In the process of hammering construction, the following points should be paid attention to: whether the pile legs of the first section of the pile are equipped with pile shoes, and whether the type of pile shoes meets the planning requirements; it is necessary to strictly carry out the process of connecting the piles and their piles. The positioning control and straightness manipulation should be in the vertical and horizontal directions of the pile position, and at least one observation point should be placed in each direction to complete the synchronous control. The theodolite or the total station should be organized for observation, of course, sometimes on site construction. In order to be quick, the team will use some methods such as hanging hammers and visual observations. However, it is necessary to observe the controllers with instruments with certain precision for the main piles and structural piles. The connection between the piles is also the focus of quality control. Today, welding is usually used. The welding quality must be ensured. The welding time should be parallelized by two or more welders in different directions to prevent stress over-fire. It is necessary to carefully check whether the apparent condition of the weld is an arrival request (such as whether it is flat and full and whether the weld surface is fish scale or the like) It is necessary to eradicate the welding slag and so on. It is necessary to ensure a minimum interval of not less than two minutes after the completion of the welding (the request is five to eight minutes according to the standard, and the implementation may be a bit difficult, but if the groundwater is rich in the place, the interval is Still try to ensure that it is properly done according to the standard requirements. If it is too urgent, it will simply form a quality hazard at the interface of the pipe pile, which will affect the bearing capacity of the pile. It is necessary to pay attention to it; It is necessary to ensure that the center line of the two pipe sections penetrates when the piles of the same piles are docked. It is better to calibrate some signs according to the crosshair direction at the pile port in time for construction; it is necessary to have a hammering process. The management personnel will follow up on the scene and make timely construction records. If the construction process is found to be difficult or the pile body is obviously offset, it is necessary to tell the supervisor and contact the planner to participate in the discussion and treatment. Pay attention to the stability of the pile cap and the maintenance of the end of the pile. The pile hammer should not be too heavy and the hammer will not be hammered. Too much, competence continued construction of the station if it is found pile after presenting the appearance of rupture phenomenon, it is necessary to immediately suspend the pile point - administration, staff deal with organizational skills, and access to supervision and planning of people agree with the construction process.

       6. The most important part of pipe pile construction is the recognition of the penetration degree when collecting the hammer. It is necessary to ensure that the request made by the planner can be reached. When each station arrives at the planned depth, it is necessary to promptly tell the supervisor to participate in the witness penetration status. If the penetration rate arrives at the planning request, it can be acknowledged that the construction of the station is over, submit the inspection materials to the supervisor and request approval. If the penetration value does not meet the planning request, the construction must continue until the penetration satisfaction plan request is stopped.

       7. Should pay attention to the integrity of the construction materials, mainly refers to the hammer construction record and quality inspection table of each station. Because of the quality of personnel and frequent explanations, the site is usually simple and disordered in these two aspects, affecting the sub-project The timely inspection, so it is very worth paying attention to.

       8. After the completion of the pile construction, the inspection of the pile body should be organized, including the bearing capacity test and the ultrasonic shake test. The former is based on the relevant provisions of the "Quality Inspection Standard for Foundation and Foundation Engineering Construction", "Standards for Pile Foundation Skills", and the construction regulations for pipe piles in the location area, and is in contact with the construction unit, planning unit, and supervision unit, according to the total number of stations. The percentage is taken from a number of stations, and the detailed station number is determined by the construction unit, the owner; the latter is usually carried out except for the station number that requires the organization of the bearing capacity test. The results of the examinations of these two experiments are clarified by the inspection unit in a written statement. These test statements, especially the bearing performance inspection statements, will be an important basis for the quality inspection of the pipe pile engineering.