Construction method of pile foundation engineering

Construction method of pile foundation engineering A method of piling engineering to improve the bearing capacity of soft soil layer. The role of the pile is to transfer the load of the upper building structure to the deep soil with large bearing capacity, and the method of compacting or compacting soft soil can also be used to improve the bearing capacity of the soil, so as to ensure the stability of the building and reduce its settlement. Pile foundation can be divided into two kinds: end-bearing pile and friction pile. The former refers to the pile passing through the soft soil layer and reaching the rock or hard soil layer; The latter refers to the pile suspended in the soil layer, using the friction between the pile and the soil to bear weight.

Common construction methods include: ① hammer sinking pile method, which is to use the impact force generated by the hammer or other impactor falling on the top of the pile to sink the pile into the soil; (2) Static pile pressing method is to use the weight and counterweight of the pile pressing frame, and pass it to the top of the pile through the hoisting machine, and press the pile into the soil section by section; (3) Water flushing pile method is to use high-pressure water flow in the process of constantly scouring the soil layer below the tip of the pile, so that the pile will soon sink into the soil under the action of self-weight or hammer; (4) The vibratory pile sinking method is to make the pile sink into the soil under the action of self-weight and mechanical force with the help of the vibration force generated by the vibratory pile sinking machine fixed on the top of the pile; ⑤ In situ pile method, is the use of concrete or sand and other materials directly injected into the soil layer to form piles.