CAJ | 학술논문

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10 mm，旋转频率为20 Hz 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。
위료실현련속침장，이주기진동격려규률위기출，설계료장궤용오구선전벌모형，병이차모형위기출，설계료액압진동침발장궤실험계통。분별개변선전벌공경화빈솔대실험계통진행방진，분석선전벌각삼수대계통동태성능화침장적영향，득도료선전벌최가삼수：당선전벌공경위10 mm，선전빈솔위20 Hz 시，계통공작특성최호，침장효솔최고。최후통과실험，이용 B＆K 수거채집분석계통획득료액압간가속도곡선，실험결과여이론분석상부，험증료선전벌이론분석적정학성화선전벌식액압진동침발장궤실험계통적가행성。연구가위실제건축공정시공중합리선택삼수，제고공작효솔제공의거。
In order to realize continuously sinking piles,the model of a five-way rotary valve was designed based on the periodic vibration excitation law,and then a test system of a hydraulic vibratory piling machine was designed.The hole diameter and rotating frequency of the rotary valve were changed to analyze their influence on the test system dynamic characteristics and get the best parameters of the valve with simulations.Simulation results showed that the test system working characteristics is the best and the sinking efficiency is the highest when the hole diameter of the valve is 10 mm and its rotating frequency is 20 Hz.Finally,tests were conducted and the acceleration curves of the hydraulic piston-rod were gained with B&K data acquisition and analysis system.The results demonstrated that the theoretical analysis of the five-way rotary valve is correct and the test system of the hydraulic vibratory piling machine is feasible.The research provided a basis for selecting reasonable parameters and improving work efficiency in practical construction system.