Study Of Hydraulic Pile Hammer On Piling Mechanism And Control

On the basis of detailed analysis and summary of the development status and trends at homeand abroad hydraulic pile hammer, single-acting hydraulic hammer can not be achieved thehigher blow to the efficiency of energy and the fight against, to consider and formulate astructure and easy to use, low cost, moresuitable for China’s national conditions of thedouble-acting hydraulic pile hammer of the structure program and the hydraulic systemsolutions; had a thorough discussion of their work performance; designed on the basis ofsuperior performance and high efficiency double-acting hydraulic pile hammer.First accordance with the pile hammer piling pile-soil interaction mechanism derived waveequation, piling system hammer, hammer cushion, the mathematical model of the interactionbetween the pile; MATLAB mathematical computing software hammer, hammer cushion, pileinteraction system dynamic nonlinear finite element analysis, the interaction of displacement,velocity, acceleration, and striking force variation and their interaction relationships.Comprehensive comparative analysis of foreign hydraulic pile hammer piling system basedon the mission requirements, determine the structure of the program20t pile hammerhydraulic system; SolidWorks software to establish a three-dimensional model of thehydraulic pile hammer and match the pile frame, hydraulic the impact cylinder andaccumulator design;20t hydraulic pile hammer hydraulic system pressure and flowcalculation.To establish a dynamic simulation model based on AMESim software hydraulic pile hammerpiling system, hydraulic system pressure, flow changes during driving of the pile hammer,modal analysis of the hydraulic system; hydraulic pile hammer in different soil conditionsdynamic construction to give the With case hardened soil, getting smaller, increasingly largestriking force of the conclusions of the hydraulic pile hammer displacement, in line with theactual construction state.