Helical piles are a structural foundation designed to bear the weight of a building so that it does not sink. Helical piles are used in a wide variety of applications, especially in residential and commercial applications such as sealing cracked walls, providing a solid and stable platform for industrial towers, supporting boardwalks in dry or wet areas, providing deep foundation piers for new construction, and shoring Existing building.
You must still be confused after saying this. In layman’s terms, spiral piles are actually a pile foundation structure that can replace cement piles such as prefabricated piles and cast-in-place piles to support buildings. For example, in some soft soil areas, some houses have cracks in their walls due to foundation sinking. At this time, screw piles can be used to improve the sinking situation.
First of all, we need to understand why foundation subsidence occurs? This is due to changes in the load-bearing layers of the foundation. The reason for this change is generally caused by poor soil compaction and excessive water soaking in the load-bearing soil before building the house foundation. To solve this problem, we can consider two time periods. First, before building a house, the foundation must be solidified to increase its bearing capacity; second, after the house is built, if it has sunk, screw piles must be used to re-support the sunken house.
Here, we mainly consider the second situation - the repair of cracks in the sinking walls of the house. The equipment we use is the Yichen screw pile information construction system, which consists of a driving head and a screw pile. A verticality monitor and a torque monitor are installed on the driving head, which are used to ensure that the screw pile is vertically screwed into the soil and to ensure that it has sufficient support.
The construction system is installed on the excavator and uses the excavator's hydraulic system to provide power to screw the screw piles into the soil. During the construction process, the torque and verticality information generated by rotation can be transmitted to the monitoring system in the cockpit through wireless signals, so that the operator can monitor the verticality of the spiral pile installation and the bearing capacity compliance status at any time.
When the spiral pile is drilled into the load-bearing layer, the monitoring system shows that the torque reaches the standard. At this time, the pile cap can be put on, the jack can be connected, and the sunken foundation can be raised to the designated position and fixed. Finally, the jacks were removed, the construction was completed, and the sunken foundation was perfectly repaired. This system equipment replaces concrete piles, does not require complex mechanical equipment, and can reduce construction costs.
So, how many years can a screw-in screw pile last? Will it be corroded quickly? This worry is completely unnecessary. First of all, the screw pile is screwed into the soil and is in close contact with the soil. There is very little air in it. Without oxygen , the iron will not be oxidized, and the natural loss is very low. Secondly, the spiral piles designed by Yichen Company adopt the hot-dip galvanizing process, which has very good corrosion resistance. After being used underground for 75 years, it still has good performance.
In fact, in many construction projects, for buildings with weak foundations, excessive building loads, earthquake resistance and shock absorption requirements, or buildings such as chimneys and transmission towers that need to withstand large uplift and horizontal forces, pile foundations can Very good for improving the foundation strength of buildings. After a hundred years of development, helical pile technology has now become a technologically mature and easy-to-operate pile foundation construction solution. It provides long-term and stable support for buildings by borrowing force from the supporting soil layer.
