Pine wood piles, wood piles made of pine wood, are mainly used to treat soft foundations, river embankments, etc.

According to the different piling methods, it can be divided into manual piling and mechanical piling. Commonly used piling machines include manual hoists and diesel pile drivers. Hydraulic excavators are often used for piling. When using a hydraulic excavator to drive piles, two people are required to help the piles in place. The bucket is turned upside down to hold the pile, and the pile is pressed into the foundation to a certain depth to stabilize itself. Then the person helping the pile is asked to go away, and the excavator presses the pile. Generally, a pile can be driven in 35 minutes, and the work efficiency is high. In order to achieve To achieve a good compaction effect and improve the bearing capacity of the foundation, piles must be driven from the periphery of the foundation to the inner circle. The pile layout should be in a plum blossom shape, and the pile spacing should not be less than 3 times the pile diameter. After piling, the pile heads should be sawed flat according to the design elevation. , so that the top of each pile is basically kept at the same level. The mud squeezed out during pile driving should be cleaned, a 20-30cm thick graded sand cushion should be laid on the top of the pile and compacted, and then the bottom slab concrete should be poured to ensure that the foundation passes through the cushion. Transfer part of the load to the soil between piles to adjust the pile-soil sharing effect. Pay attention to the following when using:

1. Pine piles are made of "logs". Do not saw them into other shapes, especially not into semicircles. Semicircular piles will quickly bend strongly and lose their effectiveness.

2. The design method of pine pile composite foundation is similar to that of ordinary composite foundation, except that the distance between piles is often smaller.

3. Taking into account the piling impact force that pine wood piles can withstand, the piling impact energy is within 300kg\/m; no matter how large it is, even a log with a tail diameter of 16cm cannot withstand it.

4. The horizontal resistance of the foundation soil in the silt area is very small, and the upper end of the pine pile group is prone to overall horizontal displacement, damaging the ground facilities; therefore, even if the need for earthquake horizontal loads is not considered, a layer of stone is mostly laid between the pine piles in an attempt to Increase the level of the pile group. The stone layer can only be laid manually. Try to squeeze the pine piles one by one.