查询词典 pile hammer

These waves travel so rapidly that they reflect back from both ends of the strings and pass the hammer several hundred times before the hammer bounces off the strings; in fact it is these waves that throw the hammer back.

对于一部音槌磨耗的钢琴，盖上琴盖或许是聪明的抉择（对于大多数的钢琴拥有者或许都会这么做，因为这时候钢琴的声音实在令人难受）。

Compared vibratory hammer is not a new pile hammer.

是振动锤不可相比的新型桩锤。

Heavy hammer ; pile ; soil ; high strain ; impulse response ; heavy hammer and low strike

重锤；桩；岩土；高应变；冲击响应；重锤低击

Furthermore, authors statistic actual impacting times in the local by various types of hammer when the pile drives into the different depth of the bearing stratum, it may offer the reference for the similar engineering to choose the hammer in the future.

因此，如何对该类型的桩进行合理沉桩分析，是桩基施工中急待解决的问题。 2沉桩阻力在沉桩施工的过程中，桩锤的冲击力应大于土层的沉桩阻力，桩才能顺利下沉。

The dynamical and kinematic specialty of hydraulic hammer is analyzed during piling. At the same time, the mathematical model is presented of each process. Based on mathematical model of each stage, simulation and analysis is made. The changing rule of displacement, velocity, acceleration can come to a decision from simulation plot during falling process of pile hammer.

提出桩锤在各个打击过程中的数学模型，并对各阶段进行仿真及分析，研究桩锤下打过程中，桩锤位移、速度、加速度变化规律，为进一步研究生产样机提供了理论依据。

Based on experiences, the calculation method for main parameters and relevant data of pile hammer of vibration pile driver extractor are presented, gives the theoretical basis for the design and application.

结合实践经验，给出了振动沉拔桩机振动桩锤主要参数以及相关数据的计算方法，为振动沉拔桩机振动桩锤的设计和应用提供了理论依据。

By using wave mechanics , the process of impact driving pile is analyzed,and a mechanics mode of impact driving system which consists of hammer spring cup and pile is established.

应用波动力学分析了冲击沉桩过程，建立了由冲锤、桩帽和桩组成的冲击沉桩系统的力学模型，研究了冲锤重量、桩帽刚度和桩波阻抗对效率的影响，在此基础上，提出了冲锤、桩帽和桩的最佳方案。

The normal working processes and the protecting processes when the pile is doffed of the hydraulic pile hammer were simulated and researched.

对液压打桩锤的正常工作过程及其脱桩保护过程进行仿真研究。

Thehydraulic pile hammer is one of the pile-driving machineries forarchitectural applications.

建筑业是国民经济的支柱产业，液压桩锤属于建筑机械中的桩工机械。

Hydraulic pile hammer is one of ideal prefabricated pile driving machines because it can adjust stress waveform ,decrease stress peak value,prolong effectual act

认为与桩等波阻的细长状锤体能够产生理想的应力波波形；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

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。