• 首页
  • 期刊介绍
  • 编委会
  • 征稿启事
  • 期刊订阅
  • 相关下载
  • 联系我们
普通混凝土和轻骨料混凝土双轴加载试验研究
Experimental Study on Mechanical Properties of Ordinary Concrete and Lightweight Aggregate Concrete Based on Biaxial Loading
投稿时间:2018-07-13  修订日期:2018-09-18
DOI:103969/j.issn.1007 9629201903007
中文关键词:  混凝土  双轴受力  力学性能  破坏准则
英文关键词:concrete  biaxial force  mechanical property  failure criterion
基金项目:中央高校基本科研业务费专项资金资助与江苏省研究生科研与实践创新计划项目(KYCX_170132);国家重点研发计划项目(2016YFC0401704)
        
作者单位
余振鹏
YU Zhenpeng
东南大学交通学院,江苏南京211102
School of Transportation, Southeast University, Nanjing 211102, China
黄侨
HUANG Qiao
东南大学交通学院,江苏南京211102
School of Transportation, Southeast University, Nanjing 211102, China
谢兴华
XIE Xinghua
南京水利科学研究院水工水力学研究所,江苏南京210029
Hydraulic Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China
摘要点击次数: 170
全文下载次数: 0
中文摘要:
      为研究混凝土双轴力学特性,采用岩石真三轴仪对普通混凝土(OPC)与轻骨料混凝土(LWAC)进行双轴压压与双轴拉压试验,得到2种混凝土在不同侧向应力作用下的破坏形态、应力应变曲线以及应力应变曲线特征值,对比分析其主应力变化趋势及破坏机理.结果表明:OPC双轴受力破坏主要是界面过渡区破坏,LWAC则是页岩陶粒骨料破坏;双轴压压工况条件下,受侧向压应力影响的LWAC主压应力提高幅度低于OPC;双轴拉压工况条件下,受侧向拉应力影响的OPC主拉应力降低幅度高于LWAC.最后,基于Kupfer双轴压压与双轴拉压破坏准则建立了定侧向加载下OPC与LWAC的双轴压压、双轴拉压破坏准则方程.
英文摘要:
      In order to study the mechanical properties under concrete biaxial force, the true triaxial machine was used to study the biaxial compression and biaxial tension and compressive test of ordinary concrete(OPC) and lightweight aggregate concrete(LWAC). The damage form and stress strain curve of concrete under different lateral stresses were obtained. The experimental results of LWAC were compared, and the influence of the main stress and the main tensile stress on the concrete under different lateral pressures and its failure mechanism was analyzed. The results show that the damage of OPC biaxial stress is mainly the damage of cement cementations layer, which is different from the damage of the shale ceramist aggregate of LWAC. Under the biaxial compressive condition, the main compressive stress of LWAC is affected by the lateral stress and the degree is lower than that of OPC. The degree of lateral stress reduction is slightly higher than that of LWAC. Finally, based on the Kupfers failure criterion, the biaxial compression pressure and biaxial tension and compressive failure criterion equation for OPC and LWAC under the fixed side loading is proposed.
查看全文  查看/发表评论  下载PDF阅读器
关闭