基于AMESim的液压加力压桩的压桩深度仿真研究

准恒功率液压静力压桩机能保证在整个压桩过程中有很高的功率利用率,为了便于对液压静力压桩机进行改进和加快压桩进度,有必要就液压静力加力压桩过程中,压桩油缸活塞直径和升降油缸活塞的初始高度、直径对压桩深度的影响进行研究.为此,分析了准恒功率液压静力加力压桩过程,利用AMESim仿真平台建立了准恒功率液压静力加力压桩系统的模型,设置了模型中的主要参数,并进行了动力学仿真.分析了仿真结果;仿真结果表明降低升降油缸活塞的初始高度,增大升降油缸活塞直径,或两者同时起作用,均能增大压桩深度,但作用不大;增大压桩油缸活塞直径,能有效地增大压桩深度,加快压桩进程.

Simulation Study on Depth of Hydraulic Pile Driving under Adding Force Based on AMESim

High power using ratio in the process of pile driving of hydraulic static pile divers with quasi-constant-power can be acquired. For being convenient for improving on the machine and quickening the course of pile driving,studying the effect of the piston diameter of pile driving cylinder,the initial displacement of piston and the piston diameter of lift cylinder on the pile driving depth in the process of pile driving under adding force is necessary. For lucubrating the effect,the process of pile driving under adding force of hydraulic static pile divers with quasi-constant-power were analyzed;The hydraulic system of pile driving under adding force were modeled in AMESim;The main parameters of the model of the hydraulic system were set;and then the dynamics simulation of the hydraulic system was achieved. The simulation results were analyzed .The simulation results show that the pile driving depth of pile driving under adding force increases laxly when falling the initial displacement of piston of lift cylinder,or augmenting the piston diameter of lift cylinder,or both. Furthermore the pile driving depth of pile driving under adding force increases rapidly and the course of pile driving quickens when augmenting piston diameter of pile driving cylinder.