Quotation of Ganzhou cement pipe

The shape of square pile is easier to develop a non welded quick connector, which can truly achieve all-weather construction, and construction is faster, which can avoid cracking of welded pile head in high groundwater level. 1) Positioning, centering and leveling of the pile driver. After the mixing pile position is placed, move the mixing pile driver to the designated pile position, centering and leveling (leveling with a level). 2) Adjust the verticality of the guide frame, and use a theodolite or plumb bob to control the verticality of the guide frame in both directions. According to the design and specification requirements, the verticality is less than 1.0% of the pile length. 3) The slurry is premixed in advance. While the deep mixer is premixing and sinking, the cement slurry is mixed in the background and put into the aggregate hopper before grouting. The cement grade 425 # ordinary silicate cement is used to mix the slurry, the water cement ratio is controlled in the range of 0.45~0.50, and the cement consumption per meter of deep mixing pile is not less than 50Kg according to the design requirements.

Quotation of Ganzhou cement pipe

The common problem of cement pipe is erosion. The erosion problem of cement pipe mainly includes crevice corrosion and corrosion. These two erosion methods belong to diffuse erosion and are not easy to be detected by inspectors. The other kind of intergranular corrosion cracking is the pipeline cracking caused by erosion and other external effects of support force and ground stress, causing huge damage. At this time, the pipeline shall be removed and replaced in time. There is also a common problem of mechanical equipment damage. This kind of damage mainly includes chisels and pits containing chisels, which is generally caused by mechanical equipment damage. External cracks are also a problem of cement pipes. These problems belong to the plan problem and can be easily detected. Peeling is a relatively serious damage condition, and perforation will lead to fracture or leakage.

Quotation of Ganzhou cement pipe

4. Excavator shall excavate to an elevation of about 10cm at the bottom of the trench. The soil at the bottom of the reserved trench shall not be excavated, and then it shall be removed manually to trim the trench bottom. Manually clean the trench, carefully check whether the soil at the bottom of the trench is disturbed, and if there is any, handle it. 5. On both sides of the trench and 1m above the bottom of the trench, elevation piles shall be set symmetrically, and elevation nails of equal height shall be nailed on them. The center line of the pipe channel and the elevation of the elevation pile shall be re measured before the bottom of the trench is reached and the pouring is leveled. 6. The height of soil stacking on one side of the trench edge shall not be more than 2m, and the distance from the trench edge shall not be less than 1m. The protection of underground pipelines for trench construction shall be disclosed to the relevant departments first to clarify the basic location of underground facilities. If necessary, sample holes shall be excavated first to find out the exact location, which is conducive to construction, and to ensure the safety of various embedded pipelines. During construction, support and protection measures shall be taken for exposed pipelines. 7. After the installation and connection construction, it is necessary to conduct a water discharge test, carefully observe for a period of time to check whether there is water seepage and leakage, and timely repair the problems found.

Quotation of Ganzhou cement pipe

Before application, be sure to check whether each part is normal, and ensure the safety factor of each rubber hose connection. With the continuous and sustainable development trend of cement pipes and the increasing number of applications, problems such as pipeline leakage of cement pipes due to design, production and manufacturing or lack of maintenance have arisen. This has seriously affected the product quality of cement pipes and threatened everyone's personal safety. Therefore, we must strictly inspect the cement pipes in the whole process of application, so that we can see what problems are likely to occur in the whole process of application of cement pipes.

Quotation of Ganzhou cement pipe

In the application of cement pipe, after the electric jack is used to jack in the lifting object, the supporting point of the lifting object shall be fixed with the support column immediately to avoid using the electric jack as the support column. The center of gravity of the lifting object shall be properly selected, and the power generating point of the electric jack shall be effectively selected. The bottom edge must be paved, and the standard of hard and soft pavement shall be fully considered. Whether to pad the tough wood, whether to place it stably, and avoid weight depression or skew. If the residual oil of the pump body is not enough, the pump must be filled with oil during operation before application.

Quotation of Ganzhou cement pipe

Compared with other pile types, especially prestressed concrete pipe piles, hollow square piles have the following outstanding advantages: ① large surface area and square or polygonal angle, the angle of repose between the pile and the soil in the soil layer is much larger than the circular surface, which means that hollow square piles can obtain greater bearing capacity than pipe piles under the same geological conditions, saving a lot of foundation funds for the project; ② By comparison, the bearing capacity of 350 hollow square piles is equivalent to that of 500 outer diameter thick wall pipe piles, and the cost per KN bearing capacity is lower than that of prestressed concrete pipe piles, which means that designers can select square piles under the same design bearing capacity, while the market price of 350 hollow square piles is less than that of 500 outer diameter thick wall pipe piles, which can save a lot of material costs;