珊瑚砂岛礁新吹填陆域钢板桩护岸离心模型试验研究

Centrifugal Model Test of Steel Sheet Pile Revetment for New Reclamation of Coral Sand Islands

利用土工离心机对珊瑚砂岛礁地基与钢板桩结构相互作用进行研究,通过试验分析钢板桩结构内力、变形、土压力分布及地基土沉降,揭示钢板桩结构工作机理。研究结果表明,钢板桩结构与珊瑚砂地基相互作用合理,钢板桩两侧土体均未达到极限平衡状态,结构整体稳定性良好、结构内力处于合理区间。数值模拟结果与离心模型试验结果基本一致。

The interaction between coral sand foundation and steel sheet pile structure is studied by using geotechnical centrifuge. The internal force,deformation,earth pressure distribution and foundation soil settlement of the steel sheet pile structure were analyzed to reveal the working mechanism of the steel sheet pile structure. The interaction between the steel sheet pile structure and the coral sand foundation is reasonable. The soil on both sides of the steel sheet pile has not reached the limit equilibrium state,the overall stability of the structure is good,and the internal force of the structure is in a reasonable interval.The numerical simulation results are basically consistent with the results of the centrifugal model test.