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基于CEL的螺旋桩安装扰动模型
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Abstract:
螺旋桩的安装过程非常复杂，安装过程需要克服桩身旋入土体过程中的摩擦阻力和端阻力，还需要克服桩身和螺旋叶片产生的抵抗扭矩。同时，在实际施工过程中，旋入过程不可避免地会对周围土体造成扰动。为了更好模拟螺旋桩旋入的全过程，以便研究贯入过程中的安装扭矩的变化，本文采用大变形来进行模拟。同时主要研究了螺旋桩安装速度对螺旋桩安装扭矩和土体扰动的影响。
The installation process of spiral pile is very complex. The installation process needs to overcome the friction resistance and end resistance in the process of pile body rotating into soil, as well as the resistance torque produced by pile body and spiral blade. At the same time, in the actual construction process, the screw in process will inevitably cause disturbance to the surrounding soil. In order to better simulate the whole process of screw pile penetration and study the change of installation torque in the process of penetration, large deformation is used for simulation in this paper. At the same time, the influence of screw pile installation speed on screw pile installation torque and soil disturbance is mainly studied.
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