【作者】 郭献章； 杨菊英； 梁正召； 肖福坤；

【Author】 GUO Xian-zhang~1 YANG Ju-ying~2 LIANG Zheng-zhao~3 XIAO Fu-kun~4 1.School of Resources & Civil Engineering of Northeastern University,Shenyang 110004,China; 2.Research Center for Numerical Tests on Material Failure,Dalian University,Dalian 116622,China; 3.School of Civil and Hydraulic Engineering of Dalian University of Technology Dalian 116024,China 4.Science and Technology University of Heilongjiang,Haerbin 150027,China

【机构】 东北大学 资源与土木学院； 大连大学 材料破坏力学数值试验研究中心； 大连理工大学 土木与水利工程学院； 黑龙江科技学院 资源与环境工程学院；

【摘要】 本文采用三维真实破坏过程分析 RFPA^3D（Three-Dimension Realistic Failure Process Analysis）系统,先对喷射混凝土构件在双向拉伸作用下的破坏过程进行了数值试验研究, 并且通过对四个不同喷层厚度混凝土模型破坏模式的比较分析,研究了混凝土喷层厚度对裂缝分布的影响及承载能力的影响,喷层的承载能力和脆性随其厚度的增大而增大,混凝土喷层柔性随其厚度的增大而减小。更多还原

【Abstract】 A numerical code RFPA^3D（Three-Dimension Realistic Failure Process Analysis） is used to simulate the three-dimensional failure process of sprayed concrete under tension.In this paper,the numerical test on the sprayed concrete under biaxial tensile stress was done at first,then,four specimens with different gunite layer’s thickness was compared and analyzed through numerical test,It is found that the gunite layer’s thickness is an important factor to influence the crack distribution and load support capacities of the specimens.The load support capacity is increasing and the flexibility is decreasing with the increase of the gunite layer’s thickness.更多还原