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利用波动力学理论,分析桩锤撞击过程桩体中应力波的生产以及在不同地基情况下的应力波在桩体内的传播形式,分析计算桩锤直接撞击和桩锤间接撞击过程中产生的冲击应力,并给出液压打桩锤最大允许工作行程的计算公式。
The wave mechanics theory is used to analyze the production of stress wave in the pile during pile hammering and the propagation of stress waves in the pile under different ground conditions. The impact stress caused by the direct impact of pile hammer and the indirect impact of pile hammer is analyzed and calculated , And gives the formula of the maximum allowable working stroke of hydraulic pile hammer.