When the hammer weight is constant, efficiency of driving pile can be increased by means of selecting drive cap and cushion padof different rigidity to match the hammer according to various geological condition and the pile.

• 在桩锤重量一定的情况下，可针对不同的地质情况和桩，通过选择不同刚度的桩帽和桩垫与其匹配来提高打桩效率。