Pine piles are suitable for silty soil foundations with small upper loads. The pine piles must be completely immersed below the water table.

According to different piling methods, it can be divided into artificial pine piling and mechanical piling. Commonly used piling machines include manual winches and diesel piling machines. Hydraulic excavators are also commonly used for piling. When using a hydraulic excavator to drive piling, two people are required to fix the pile in place. Turn the bucket upside down to fix the pile, press the pile into the foundation to a certain depth and stabilize it on its own, then let the pile supporter detach, and the excavator will loosen the pile. Generally, piling can be driven once every 35 minutes, and the work efficiency is high. In order to achieve excellent results To achieve compaction effect and increase the bearing capacity of the foundation, piles must be driven from around the foundation to the inner circle. The piles should be arranged in a plum blossom shape, and the distance between piles should not be less than 3 times the diameter of the piles.

After piling is completed, the pile head should be sawed flat according to the planned elevation so that the top of the pile is basically at the same level. The silt squeezed out during piling should be removed, and a 20-30cm thick sand and gravel cushion should be placed on the top of the pile. After compaction, the base concrete should be poured. , ensure that the foundation transfers part of the load to the soil between piles through the cushion, and adjusts the pile-soil separation effect. Setting a cushion under the roots can reduce the pile-soil stress ratio, give full play to the effect of the soil between piles, and reduce the stress on the bottom surface of the roots. Set. After changing the thickness of the cushion, the thinner the cushion responsible for adjusting the vertical load of the piles, the higher the percentage of the pile load in the total load, and vice versa. If there is no cushion, the effect of the soil between the piles will be ineffective.

In general construction, it is necessary to lay a good foundation, and pine piles are generally used as solid road foundations. Among them, due to the corrosion resistance of pine piles, the pine piles themselves metabolize turpentine, which can be used as a chemical substance to kill insects.