How much is Fuzhou cement pile
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.
How much is Fuzhou cement pile
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.
How much is Fuzhou cement pile
Solution to surface crack of cement pipe. First of all, we should reasonably control the temperature raising speed inside the cement pipe. We can add appropriate mineral ash in the production of cement pipe to ease the release rate of water binder ratio; Secondly, by controlling the temperature of raw materials, we can select a condenser inside the cement pipe structure to cool the circulating water and release the specific energy of water glue. When cracks have already appeared, people usually paint cement mortar or low viscosity polymer for sealing to avoid water intrusion; If the crack is deep or wide, the working pressure grouting shall be used for technical repair.
How much is Fuzhou cement pile
The application of electric oil pump must refer to the manual of electric oil pump. In case of use, the requirements in the key main parameters should be followed very well. Do not be overweight. After arriving at the travel arrangement, pressure should be applied. Otherwise, when the height width ratio of lifting or the lifting tonnage exceeds the requirements, the top of the hydraulic cylinder may have serious oil leakage. 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.
How much is Fuzhou cement pile
Principle of pipeline well crossing method: when the cement pipeline meets the crossing of existing pipelines or rainwater and sewage pipes during burial, the pipeline well crossing method is adopted, which can reduce the buried depth of the pipeline and is not easy to block. An inspection well shall be set at the intersection of pipelines to let another pipeline pass through the well. The key is to ensure that the water flowing area in the well (the area of the shadow part in the figure) is greater than or equal to the sectional area of the pipeline to be passed through. The size of the water flowing area in the well can be controlled by the size of the pipe passing inspection well. The principle of pipe passing is small pipe passing through large pipe, and the current pipeline passing through the planned pipeline.
How much is Fuzhou cement pile
The theoretical calculated shear resistance of square pile is 2-3 times of that of the same pipe pile. According to the actual test of Japan's Ministry of Construction, it is 4.5 times of that of the pipe pile. This shows that the seismic performance of hollow square pile is very superior, and it is worth popularizing in earthquake prone areas, high-rise buildings, and building foundations with large areas of basements; The hollow square pile inherits and develops the low construction damage rate of the original concrete square pile. The high-strength concrete with a square head has better impact resistance than the pipe pile, and a much smaller damage rate of the pile head; The square has a larger welding perimeter than the round, fully ensuring the effective welding strength between each section of the pile, greatly reducing the joint desoldering or displacement of the square pile during construction, and making the pile quality better
