| 复杂应力条件下土与结构物相互作用接触面的力学特性 |
| |
| 引用本文： | 刘文白,朱奕帆,张洁.复杂应力条件下土与结构物相互作用接触面的力学特性[J].上海海事大学学报,2015,36(4):83-86. |
| |
| 作者姓名： | 刘文白 朱奕帆 张洁 |
| |
| 作者单位： | 上海海事大学 海洋科学与工程学院,上海海事大学 海洋科学与工程学院,中交上海港湾工程设计研究院有限公司 |
| |
| 基金项目： | 国家自然科学基金（51078228）；国家海洋局公益性行业科研专项（201105024-5）；上海市研究生教育创新计划（20131129） |
| |
| 摘 要： | 为研究外加荷载对接触面力学特性的影响,通过土与结构物相互作用的物理试验和数值模拟研究接触面最大剪应力的变化规律,运用PFC2D模拟土与结构物相互作用过程中颗粒位移和颗粒接触力的不同响应.结果表明:当法向应力一定时,最大剪应力随围压的增大而近似线性增大;当平均应力一定时,最大剪应力随法向应力的增大而近似线性增大;当法向应力一定、围压逐渐增加时,颗粒位移和颗粒接触力的分布与法向应力与围压的比值有关.
|
| 关 键 词： | 土与结构物相互作用 物理试验 PFC2D 接触面 最大剪应力 颗粒位移 颗粒接触力 |
| 收稿时间： | 2014/12/29 0:00:00 |
| 修稿时间： | 2015/4/28 0:00:00 |
Mechanical characteristics of interface of soil structure interaction under complex stresses |
| |
| Institution: | College of Ocean Science and Engineering Shanghai Maritime University,College of Ocean Science and Engineering Shanghai Maritime University |
| |
| Abstract: | In order to study the effect of applied load on mechanical characteristics of contact surface, the variation law of the maximum shear stress of the interface is studied by physical experiments and numerical simulation on the soil structure interaction, and the different responses of particle displacement and particle contact force in the soil structure interaction process are simulated by PFC2D. The results show that: when the normal stress is constant, the maximum shear stress increases approximately linearly with the increase of the surrounding stress; when the average stress is constant, the maximum shear stress increases approximately linearly with the increase of the normal stressl; when the normal stress is constant and the surrounding stress increases gradually, the distribution laws of particle displacement and particle contact force are related to the ratio of the normal stress and the surrounding stress. |
| |
| Keywords: | soil-structure interaction physical experiment PFC2D interface maximum shear stress particle displacement particle contact force |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《上海海事大学学报》浏览原始摘要信息 |
| 点击此处可从《上海海事大学学报》下载免费的PDF全文 |
