振动台试验混凝土桩体模型材料的研究  

Shaking table test study on model materials of concrete pile-soil system

作　　者：黄占芳[1] 刘永强[1] 尹超[1] 白晓红[2] HUANG Zhanfang;LIU Yongqiang;YIN Chao;BAI Xiaohong(School of Architectural Engineering,Shandong University of Technology,Zibo 255049,China;School of Architectural and Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]山东理工大学建筑工程学院,山东淄博255049 [2]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《山东理工大学学报（自然科学版）》2020年第2期21-23,30,共4页Journal of Shandong University of Technology:Natural Science Edition

基　　金：国家自然科学基金项目(51808327);山西省科技攻关项目(20100321070)

摘　　要：振动台试验是研究结构动力特性的重要途径之一,而振动台试验模型材料的选择是试验结果可靠度高低的重要因素。在动力模型相似性量纲分析理论基础上,对所选材料在不同配比情况下进行了密度、弹性模量的试验测定,试验结果得出:将水泥砂浆中砂子骨料用一定比例的砂土来替代,其弹性模量可以降低一个数量级,并且密度变化不大,混凝土和水泥砂浆的弹性模量相近。基于本次试验,可以选择试验用材料来代替工程中的混凝土材料进行相关动力试验。Shaking table test is an important way to study the dynamic characteristics of the structure,the choice of model materials is an important influencing factor in reliability of test results.Based on the theory of similarity dimensional analysis of the dynamic model,density and elastic modulus of the material different proportions are determined.The results show when a certain proportion of sand is replaced by soil in the cement mortar,its elastic modulus can be remarkably reduced by ten times while density just changed a little.Because elastic modulus of cement mortar is similar with concrete based on the test sdudy,when a related dynamic test will be implemented,the test materials can be selected instead of concrete.

关 键 词：动力模型 砂土比 相似性量纲 密度 弹性模量 

分 类 号：TU59[建筑科学—建筑技术科学]