文章摘要
一种特制混凝土的双向拉伸强度试验研究
Study on the biaxial tensile strength of special made concrete
  
DOI:
中文关键词: 机械式双向拉伸仪  材料试验  特制混凝土  双向拉伸强度  Hill理论  计算式
英文关键词: mechanical biaxial stretching equipment  material test  special concrete  biaxial tensile strength  Hill theory  formula
基金项目:国家自然科学基金资助项目(51308210)
作者单位
陈积光,陈乐求,童小龙 湖南理工学院 土木建筑工程学院湖南 岳阳 414006 
摘要点击次数: 733
全文下载次数: 683
中文摘要:
      以粒径为5~7 mm的石灰岩碎石为粗骨料,拌制成一种特制混凝土试件.采用机械式双向拉伸仪进行材料试验,得到了这种混凝土的单、双向拉伸强度试验值;同时,根据Hill理论推导的计算式进行了理论计算.结果表明,混凝土的双向拉伸强度比其单向拉伸强度低15%~30%,计算值与试验值吻合良好,最大差别在11%以内.这对于复杂应力作用下的混凝土板、壳结构设计来说,具有重要意义.
英文摘要:
      Special concrete specimens were made of coarse aggregate consisted of crushed limestone whose particle diameters ranged from 5 to 7mm. The uniaxial and biaxial tensile strength testing results were obtained by material tests using mechanical biaxial stretching equipment; meanwhile, theoretical values were calculated using the formula derived from the Hill Theory. The results show that the specimens’ biaxial tensile strength is 15%-30% lower than that of uniaxial. Theoretical values fit well with testing results, with maximum difference lower than 11%. This conclusion is of great significance to the design of plate and shell concrete structure which is used under complex stresses.
查看全文   查看/发表评论  下载PDF阅读器
关闭