摘要
岸坡土体的变形将导致高桩码头桩顶变位,影响桩帽与横梁之间的搭接,使得码头结构处于危险之中,蠕变则是形成土体变形的原因之一。以天津港高桩码头为例,分析了高桩码头的桩顶变位特征,对岸坡土体进行了蠕变特性试验,利用试验结果参数进行了结构与土相互作用的蠕变变形计算。结果表明,蠕变是影响桩基侧向变形的一个重要因素,岸坡土体蠕变主要分布在坡顶下方淤泥质粘土和坡面的淤泥层,蠕变随时间增长而增长,但增长速率降低。相关结论可为天津港和类似高桩码头的检测评估及加固提供指导。
The deformation of bank soil will lead to the displacement of the pile block of high-pile wharf, to influence the joint between the cap-block and the beam, to cause the wharf structures at risk; creep deformation is one of the reasons for soil deformation. Take high piled wharf in Tianjin Port for an example, the deformation characteristics of the pile block of high-piled wharf were analyzed, creep properties test on bank soil was carried out, the deformation computation of the interaction of the structure and soil by using the parameters of test results were carried out. The results show that creep deformation is a key factor for influencing pile lateral deformations, creep deformations of bank soil are mainly distributed in very soft silty clay below the top of slope and silt layers of slope, creep deformation increases with time, but the growth rate reduced. Relevant conclusions can provide guidance for the detection and reinforcement of Tianjin Port and the similar high-piled wharf.
出处
《中国港湾建设》
北大核心
2009年第4期5-8,共4页
China Harbour Engineering
基金
天津市科技基金项目(06YFJMJC06000)
关键词
土体蠕变
高桩码头
桩土相互作用
有限元
soil creep deformation
high-piled wharf
pile-soil interaction
finite element
