摘要
为了研究高强混凝土的断裂过程区,对带有预制裂缝的试件进行三点弯曲实验,分析跨度对断裂过程区的影响。结果表明:试件处于峰值荷载阶段时,随着跨度增大,断裂过程区长度先增大再减小,最后趋于稳定;断裂过程区宽度先增大后减小;断裂过程区形状总体呈减小的趋势。试件处于断裂过程区完全发展阶段,随着跨度增大,长度、宽度和形状总体呈增长的趋势。
To study the fracture process zone of high-strength concrete,three-point bending tests were conducted on specimens with preexisting cracks to analyze the influence of span on the fracture process zone.The results show that:when the specimen is in the peak load stage,as the span increases,the length of the fracture process zone first increases and then decreases,finally tending to stabilize;the width of the fracture process zone first increases and then decreases;and the overall shape of the fracture process zone shows a decreasing trend.When the specimen is in the fully developed stage of the fracture process zone,as the span increases,the length,width,and overall shape show an increasing trend.
作者
龙巧
LONG Qiao(Guizhou Provincial Institute of Water Resources and Hydropower Survey and Design Co.,Ltd.,Guiyang,Guizhou 550081,China)
出处
《长江工程职业技术学院学报》
2026年第1期1-5,共5页
Journal of Changjiang Institute of Technology
关键词
高强混凝土
三点弯曲梁
断裂过程区
参数化分析
High-strength concrete
three-point bending beam
fracture process zone
parametric analysis
