波浪动荷载作用下吸力式桶形基础水平承载性能

针对波浪、风等水平动荷载作用下吸力式桶形基础的水平极限承载能力,采用显式动力方法,建立波浪动荷载作用下吸力式桶形基础的力学模型,基于无限边界与瑞利阻尼进行模型优化分析,开展相同水平位移条件下静荷载、动荷载(作用时间0.5、1、2、5 s)模式下地基极限承载性能对比研究.研究结果表明,与静荷载作用相比,不同动荷载作用时间...

Horizontal bearing capacity of suction bucket foundation under wave dynamic load

For the horizontal ultimate bearing capacity of the suction bucket foundation under horizontal dynamic loads such as waves and wind, the explicit dynamic method was adopted to establish the mechanical model of the suction bucket foundation under the wave dynamic load. Based on the infinite boundary and Rayleigh damping, the model optimization analysis was carried out, and the comparative study of the ultimate bearing performance of the foundation under static load and dynamic load (action time 0.5, 1, 2, 5 s) under the same horizontal displacement conditions was carried out. The research results showed that the horizontal ultimate bearing capacity curve of the bucket foundation under different dynamic load time decreased with the increase of the loading time compared with the static load, and gradually approached the static load bearing capacity curve. Affected by the damping of the rock and soil media on the seabed, the rotation center of the barrel under the horizontal load moved up to the top of the barrel as the time of the dynamic load decreased.