Modelling of pile foundations retrofitting strategies against seismically induced lateral spreading
Modelling of pile foundations retrofitting strategies against seismically induced lateral spreading
复制标题
针对地震引起的横向扩展的桩基改造策略的建模
DOI：
10.1680/ijpmg.2002.020302
复制
发表时间：
2002
影响因子：
1.9
通讯作者：
Yingjuan Wang
中科院分区：
文献类型：
--
作者：
T. Abdoun;Yingjuan Wang
地震和离心模型的经验表明，浅层不可液化土在增加施加在桩帽和桩基上的力和力矩方面具有重要意义，这些桩帽和桩基受到剪切力引起的横向扩展。通过一系列的离心试验，研究了浅层非液化土对提高桩基弯曲响应的重要性。现有基础的一种有前途的修复方法是用一种在恒定的侧向土壤力下会屈服的软材料代替桩和桩帽周围沟槽中的浅层土壤。通过7个离心试验研究了单桩基础的侧向扩展及其影响。在三层土壤系统中，有和没有地面以上的质量，改造和非改造桩试验，进行。所有离心试验均在100 g-吨RPI离心机上进行，使用倾斜层流箱和模型桩作为研究工具。具体目标…
Experience from earthquakes and centrifuge models have shown the great importance of the shallow nonliquefiable soil in increasing the forces and moments imposed on the pile cap and pile foundations subjected to liquefaction-induced lateral spreading. A series of centrifuge tests were conducted to study the great importance of the shallow nonliquefiable soil in increasing the bending response of the pile foundation. A promising rehabilitation approach of existing foundations is to replace the shallow soil in a trench around the pile and pile cap by a soft material that will yield under constant lateral soil forces. Seven centrifuge experiments are performed to study lateral spreading and its effect on single pile foundations. Retrofitted and non-retrofitted pile tests in three-layer soil systems, with and without a mass above the ground, are preformed. All centrifuge tests are conducted at the 100 g-ton RPI centrifuge, using the inclined laminar box and model piles as research tools. The specific objectiv...