中文摘要：

围海造陆逐渐成为沿海地区解决港口建设用地的主要途径之一。目前对于围海造陆港口吹填地基在集装箱荷载下工作区深度的研究鲜有报道。通过现场足尺试验研究了港口地基中附加应力及地基回弹模量的变化规律，试验结果表明：3层集装箱加载工况下附加应力与白重应力比等于0．2和0．1的深度分别为1．80，2．60m；地基回弹模量随砂垫层厚度增加而增加，砂垫层较薄时地基回弹模量值较离散。随后，采用FLAC如建立数值分析模型，其中铺面结构采用理想弹性模型，地基采用M-C模型。模拟中对不同集装箱层数加载工况和不同砂垫层厚度工况下，地基中的附加应力、竖向应变及侧向何移等参数进行了系统分析。

英文摘要：

Land reclamation is becoming an important resort in solving the land-scare issue for port construction in highly-built coastal areas. No research, to the authors＇ knowledge, has been reported previously to study the working depth of reclaimed port ground under the action of container load. The induced stress distribution and the resilient modulus are firstly investigated via a set of full-scale loading tests. It is indicated that under the loading condition of＂3 layers of containers＂, when the ratio of induced stress to gravity stress is equal to 0.2 and 0.1, the corresponding depths are 1.80 m and 2.60 m, respectively. The magnitude of resilient modulus increases with the thickness of sand cushion. The dispersion degree of resilient modulus is greater when the thickness is thinner. Subsequently, a series of numerical simulations are conducted using FLAC3D. The pavement is simulated by means of the elastic model and the ground by M-C model. The numerical models cover a wider range of loading condition and sand cushion thickness. A detailed investigation on various parameters of port ground is performed, such as induced stress, vertical strain and lateral displacement.