摘要
为研制高性能的混凝土和预测混凝土结构的断裂,用云纹干涉法这一现代光力学测试方法研究了混凝土在荷载作用下的破坏机理,分析了在荷载作用下它的变形性能,并与传统的机械和电测等点测试方法做了对比.结果表明:在7级载荷下测试获得全场位移、应变分布及消除加载偏心影响后的二维应变和变异系数变化趋势,可区别其线性、非线性及发生微裂纹贯通阶段的平均应力.研究结果为进一步开展系统性研究及推广应用奠定了基础.
To develop high-performance concrete and forecast the cracks of concrete structure,moiré interferometry is used to study the destructive mechanism of concrete acted under load,to analyze its deformation performance acted under load,and it is compared with traditional mechanic and electrical testing method.According to the whole-field displacement and the strain distribution under seven grade load, two dimension strain changing trend under eccentric load and variation coefficient trend,we can distinguish its linearity and average stress when tiny crack occures.It provides basis for further systematic study and development.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2004年第10期896-900,共5页
Journal of Tianjin University：Science and Technology
关键词
云纹干涉法
全场测试
光电子及计算机辅助
混凝土
破坏机理
moiré interferometry
whole-field measuring
aid of photo-electronics and computer
concrete
destructive theory
