旋转阀式液压振动沉拔桩机实验系统特性分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (21) : 90-95.

论文

旋转阀式液压振动沉拔桩机实验系统特性分析

李小彭，赵光辉，梁亚敏，闻邦椿

作者信息 +

Dynamic Characteristics of the Experiment System of Hydraulic Vibratory Piling Machine with Rotary Valve

LI Xiao-peng, ZHAO Guang-hui, LIANG Ya-min, WEN Bang-chun

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摘要

为了实现连续沉桩，以周期振动激励规律为基础，设计了桩机用五口旋转阀模型，并以此模型为基础，设计了液压振动沉拔桩机实验系统。分别改变旋转阀孔径和频率对实验系统进行仿真，分析旋转阀各参数对系统动态性能和沉桩的影响，得到了旋转阀最佳参数：当旋转阀孔径为10mm，旋转频率为20Hz时，系统工作特性最好，沉桩效率最高。最后通过实验，利用B&K数据采集分析系统获得了液压杆加速度曲线，实验结果与理论分析相符，验证了旋转阀理论分析的正确性和旋转阀式液压振动沉拔桩机实验系统的可行性。研究可为实际建筑工程施工中合理选择参数，提高工作效率提供依据。

Abstract

In order to realize continuous sinking pile, the model of five-way rotary valve is designed based on the cycle vibration excitation law, and then the experiment system of hydraulic vibratory piling machine is designed. The pore size and rotating frequency of rotary valve are changed to analyze their influence on the system dynamic characteristics and get the best parameters. Simulation results show that the system working characteristics is the best and the sinking efficiency is the highest when the value of pore size is 10mm and rotating frequency is 20Hz. Finally, experiment is conducted and the acceleration curves of hydraulic piston-rod are got by the B&K data acquisition and analysis system. The results demonstrate that the theoretical analysis of five-way rotary valve is correct and the experiment system of hydraulic vibratory piling machine is feasibility. The research provides evidence for selecting reasonable parameters and improving work efficiency in practical construction system.

导出引用

李小彭;赵光辉;梁亚敏;闻邦椿. 旋转阀式液压振动沉拔桩机实验系统特性分析[J]. 振动与冲击, 2014, 33(21): 90-95

LI Xiao-peng;ZHAO Guang-hui;LIANG Ya-min;WEN Bang-chun. Dynamic Characteristics of the Experiment System of Hydraulic Vibratory Piling Machine with Rotary Valve[J]. Journal of Vibration and Shock, 2014, 33(21): 90-95