悬吊环式土-结构动态接触试验装置系统的研制及验证  

Development in a suspensory ring test apparatus for studying dynamic contact performance between soil and structure

作　　者：李立云[1] 张盛夏[1] 王晓琼[1] 

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《地震工程与工程振动》2013年第4期248-255,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50808006;51278017)

摘　　要：为了更进一步研究土与结构相互作用中界面的动态接触特性,在DYS-200-1-05电动振动系统基础上研制了一种悬吊环式试验装置系统。该装置系统具有如下功能特点:(1)可以分析加载频率、加载速率对土与结构接触特性的影响界面;(2)法向为常应力控制,切向可实现不同频率加载;(3)考虑了剪切外力作用过程中土体的剪切变形特性,故可以研究试验过程中土-结构系统破坏与土体自身变形破坏的关系。试验结果表明,本试验装置系统的性能可靠,为后面系统研究土-结构界面动态接触性能奠定了基础。In order to study the dynamic contact performance between soil and structure, on the basis of the DYS- 200-1-05 shaking table system, a test apparatus was designed, which was made up of horizontal load unit, vertical load unit, suspensory ring container, sensors, data logger, and so on. Its features and applications include the fol- lowing aspects. First, the influence of the load frequency and velocity on the contact performance between soil and structure can be researched. Second, the vertical force on the interface is constant, and the horizontal force paral- leled to the interface can be carried out by different frequency. Third, the shear distortion of the test soil is consid- ered, thereby, the relationship between damage to soil-structure system and that to soil can be studied in test. Then, some tests were finished. The test results indicate that the test apparatus is reliable and applicable to study the dynamic mechanical characteristics of the contact between soil and structure.

关 键 词：土-结构界面接触 动态力学性能 试验仪器 

分 类 号：TU435[建筑科学—岩土工程] P315.93[建筑科学—土工工程]