摘要
基于模型试验分析了环境因素对混凝土结构特征参数的影响,包括环境温度和环境湿度.首先对试验环境进行了介绍,接着基于混凝土连续梁模型分析了环境温度对结构模态频率的影响,尤其是结冰时的非线性效应.最后基于混凝土试块分析了环境湿度对结构质量的影响,发现具有明显的时间滞后效应.
An experiment was made to investigate the environmental effect,including environmental temperature and humidity,on concrete structural feature parameters.First,the experiment condition was introduced.Then,based on a concrete continuous supported beam model,an analysis was made of the environmental temperature effect on structural modal frequencies,especially the nonlinear effect of freezing.Finally,the environmental humidity effect on structural mass was validated by a concrete block experiment.Results show that the humidity is of an obvious time-lag effect on structural mass.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第12期1739-1745,共7页
Journal of Tongji University:Natural Science
基金
中国博士后科学基金(20100480624)
土木工程防灾国家重点实验室项目(SLDRCE-08-A-05)
关键词
结构健康监测
环境因素
模型试验
特征参数
structural health monitoring
environmental factor
model experiment
feature parameter
