一种锯末-黏土混合地基土的动力特性试验研究  

Design and experimental study of model soil used for the shake table test

作　　者：蒋隆敏[1] 刘方成[2] 戴益民[1] 

机构地区：[1]株洲工学院土木系,湖南株洲412008 [2]湖南大学土木工程学院,湖南长沙410082

出　　处：《合肥工业大学学报（自然科学版）》2005年第7期799-803,共5页Journal of Hefei University of Technology：Natural Science

基　　金：湖南省自然科学基金资助项目(02JJY3043);湖南省教育厅划块资助项目(03C580)

摘　　要：文章介绍了一种以锯末为主要成分,用于地基-基础-上部结构动力相互作用振动台模型试验的混合地基土。用循环单剪仪对混合地基土进行了动力特性试验,得出了动剪切模量比Gd/Gdmax和阻尼比λ随动剪应变γd变化的关系曲线,给出了该种混合地基土的动力特性参数。A kind of model soil which is mainly composed of sawdust is designed.The aim of such design is to use such soil in the shake table test of the soil-foundation-structure system. Cyclic simple shear testing is conducted on the specimens of both the site soil and and the designed soil, and the curves of dynamic shear modulus ratio G__d/G__(dmax) and damping ratio versus dynamic shear strain of the designed model soil and the corresponding parameters are presented.

关 键 词：动剪模量 阻尼比 循环单剪试验 模型试验 

分 类 号：TU411.3[建筑科学—岩土工程] TU442[建筑科学—土工工程]