用数字图象法测量砼成形早期的变形特性  

Measurement of Deformation Behaviour of Concrete atits Earlier Formation Stage by Digital Image Method

作　　者：高建新[1] 周辛庚[1] 章玮宝[1] 龚欣芸 

机构地区：[1]上海同济大学,清华大学,同济大学生物医学工程研究所

出　　处：《实验力学》1996年第3期334-338,共5页Journal of Experimental Mechanics

摘　　要：本文应用数字图像测量系统，对砼试件在成形早期最初２６小时的变形场进行了非接触的定量测量，得到了砼成形早期收缩应变随时间变化的曲线。整个测量过程简便直接，表明数字图像测量方法完全可用来对砼结构的位移场进行非接触的精密测量，在配备了相应的光学观察仪器后，也可用来测量一般的应变场，从而将为土建结构的定量测试提供新的有力手段。Digital image measurement system was used to measure the deformation of a concretespecimen within its earlier 26 hours of formatipn. The time-dependent curve of shrinking strainduring the earlier concrete formation was obtained. The whole measuring process was rather simple anddirect,indicating that the digital image measurement method is a new practical alternative for precisemeasurement of displacement fields of concrete structures. Equipped with related optical apparatus,itcan also be applied to measure common deformation fields, and will provide a strong means ofquantitative deterctionof deformation in civil ensineering.

关 键 词：数字图像 相关测量 成形 变形 混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]