【摘要】 通过简化基桩为一维弹性杆件,并根据基桩埋置于地下后的受力情况,推导了应力波在桩身中传播的阻尼波动方程.根据该方程,分别给出了纯摩擦桩、端承桩、摩擦端承桩的振动初始条件和边界条件,导出了3类桩动态响应的数学模型,并对其动力特性进行了分析.最后,运用M atlab对桩身中弹性波的传播进行了模拟.更多还原

【Abstract】 The foundation pile is simplified as a one dimensional elastic rod.So a damped wave equation of the stress wave propagation in the pile is deduced according to the forced status of the pile in soil.In accordance with the damped wave equation,this paper puts forward the mathematical models of vibration response for the friction pile,end-fixed pile,friction and end-bearing pile,and sets up their boundary and initial conditions.Their dynamic characteristics are discussed in detail.In the end of this article,Matlab is used to simulate the state of elastic wave propagation in the pile.更多还原