冲击荷载作用下沙漠砂混凝土动态抗折性能研究  

Dynamic flexural behavior of desert sand concrete under impact loading

作　　者：刘海峰[1,2] 张润奇 吕晓晔 杨维武 LIU Haifeng;ZHANG Runqi;Lü Xiaoye;YANG Weiwu(School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Xinhua College,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021 [2]宁夏大学新华学院,宁夏银川750021

出　　处：《混凝土》2022年第8期51-55,共5页Concrete

基　　金：国家自然基金(51368048,11162015,51968059);宁夏自然基金(2020AAC03044);宁夏大学研究生创新能项目。

摘　　要：为了研究沙漠砂混凝土动态力学性能,利用落锤冲击试验机进行了沙漠砂混凝土动态抗折性能试验,分析沙漠砂替代率对沙漠砂混凝土动态抗折强度影响。研究表明:沙漠砂混凝土具有明显率相关性,沙漠砂混凝土动态抗折性能随沙漠砂替代率增加呈现先增大后减小趋势。沙漠砂替代率40%时,沙漠砂混凝土动态抗折强度最大。In order to study the dynamic mechanical properties of desert sand concrete(DSC),the dynamic flexural experiments of DSC were tested by drop weight impact testing machine.The influence of desert sand replacement rate on the dynamic flexural strength of DSC was analyzed.Results showed that DSC was rate-dependent.Dynamic flexural strength of DSC increased firstly and then decreased with the increase of desert sand replacement rate.When desert sand replacement rate was equal to 40%,the dynamic flexural strength of DSC was maximum value.

关 键 词：沙漠砂混凝土 落锤冲击试验 沙漠砂替代率 动态抗折强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]