王天涯,王毅红,吴琴容.自嵌固生土砖砌体剪压复合受力试验研究[J].湖南大学学报:自然科学版,2019,(9):62~68
自嵌固生土砖砌体剪压复合受力试验研究
Experimental Study of Interlocking Compressed Earth Block Masonry under Shear-compression Composite Action
  
DOI:
中文关键词:  自嵌固生土砖砌体  抗剪强度  破坏机理  剪压相关性  试验研究
英文关键词:interlocking compressed earth block masonry  shear strength  failure mechanism  correlation of shear-compression  experimental study
基金项目:
作者单位
王天涯,王毅红,吴琴容 (长安大学 建筑工程学院陕西 西安 710061) 
摘要点击次数: 18
全文下载次数: 32
中文摘要:
      为了研究自嵌固生土砖砌体嵌固部位在剪压复合作用下的承载能力,在考虑其承受不同上部竖向荷载的情况下对18个自嵌固生土砖砌体试件进行了剪压复合受力试验,探究其受力性能、破坏机理及剪压相关性.试验表明砖体间咬合嵌固可起到销栓作用,表现出较好的抗剪能力.分析总结了砌体剪切、剪压和斜压三类破坏形态产生的主因,提出了自嵌固生土砖砌体剪压复合受力下砌体的抗剪强度计算公式,并与传统主拉应力破坏理论中砌体抗剪强度计算方法进行了对比,发现主拉应力破坏理论计算出的砌体抗剪承载力安全可靠,但较为保守.研究可为自嵌固生土砖砌体力学性能的进一步研究及设计应用提供试验成果及理论依据.
英文摘要:
      In order to study the bearing capacity of the occlusal part of interlocking compressed earth block (ICEB) masonry under shear-compression composite action, shear-compression composite test was performed on 18 ICEB masonry specimens under various vertical loads. The mechanical properties, failure mechanism and correlation between compression and shear stress were investigated. The results show that the interlocking of the brick can play a pinning effect,showing a better shear capacity. The main causes of the three types of failure mode of masonry were analyzed and summarized, and shear-compression strength formula was proposed compared with the formula by maximum tensile theory. It is found that the shear strength of the masonry calculated by the maximum tensile stress failure theory is safe and reliable, but conservative. The results of the study can provide the experimental results and theoretical basis for further research and design, as well as the application of the masonry mechanical properties.
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