中文摘要：

桶式基础防波堤结构在深厚软泥土沿海工程中逐渐引起关注并大量应用于工程实践,但单桶多隔舱桶式基础结构的稳定性尚未得到解决.采用原状软黏土,通过室内物理模型试验,探讨了桶式基础防波堤的稳定性,得到荷载—位移曲线的变化规律,下桶内的负压对荷载—位移曲线的影响及桶式基础结构破坏形式与外荷载的关系.试验证明,在表层土体的抗剪强度范围内,荷载与位移呈线性变化,否则,呈非线性变化.如果存在负压作用,荷载与位移的线性关系范围扩大,非线性关系范围缩小,最终破坏形式相同.桶式基础结构的破坏形式与外荷载的作用点及桶底面土体的强度直接相关.上述规律可以为新型桶式基础结构防波堤的设计、优化与完善提供参考.

英文摘要：

Bucket-based breakwater structure is increasingly concerned and used in engineering practice for the coastal engineering of deep soft soil,but the stability of multi-compartment single-bucket structure has not yet been solved.In this paper,the stability of bucket-based breakwater structure is investigated using original soft clay in laboratory by physical model tests.The variation law of load-displacement curve,the effect of negative pressure on load-displacement curve,and the relationship between bucket-based structural damage form and external load are obtained.Test results show that the load-displacement curve changes linearly in the surface soil shear strength,but changes nonlinearly beyond the range.If there is negative pressure,the linear relationship of the load-displacement curve is expanded,the scope of non-linear relationship is reduced,and the eventual extent of damage is the same.The destruction form of the bucket-based structure is directly related to external load point and the strength of the soil in the bucket bottom.The law above can give a reference to design,optimization and improvement of new bucket-based breakwater structure.