地下水位变化引起地基破坏的模拟实验装置  

Apparatus for observing soil failure induced by varying underground water tables

作　　者：李大勇[1] 张雨坤[1] 冯磊[1] 郑则旺[1] 

机构地区：[1]山东科技大学土木建筑学院,山东省防灾减灾重点实验室,山东青岛266590

出　　处：《实验技术与管理》2013年第7期16-19,共4页Experimental Technology and Management

基　　金：国家自然科学基金资助项目(51078227);山东省自然科学基金资助项目(ZR2009FM003)

摘　　要：为了满足课堂教学的直观性,加深学生对有效应力原理和渗流理论的理解,激发学习兴趣,配合土力学教学实验,开发了操作性强、制作简便、造价低廉的承载力破坏实验装置。依此实验装置,可方便地实施两种实验方案:一是地下水位上升引起浅基础从倾斜到倾倒即地基整体破坏的整个过程,并与桩基础情况进行了对比;二是地下水位下降导致房屋下沉实验。使学生加深理解了孔隙水对土体的影响,提高了学生利用有效应力原理和渗流理论解决工程实际问题能力。The principles of effective stress and seepage are of significance in soil mechanics. It is necessary to master the essence of the above principles for understanding settlement （compression） of soil, earth pressure of retaining wall, and soil failure. An apparatus is developed to display the soil failure and helps students to understand soil mechanics. Two kinds of tests are carried out by using this apparatus, in which one records the entire process of tilting to collapse of a shallow footing, compared to a piled building model due to groundwater rise, the other displays subsidence due to water lowering.

关 键 词：地基破坏 模拟实验 有效应力 渗流原理 

分 类 号：TU415[建筑科学—岩土工程]