长江科学院院报Issue(12)：120-124,5.DOI:10.11988/ckyyb.20140510
高性能混凝土的徐变影响因素及模型优化
Influencing Factors of Creep in High-performance Concrete and Model Optimization
摘要
Abstract
In the present models of creep prediction in high-performance concrete,influencing factors are mainly ob-tained through regression of measured data,with limit and poor application in practical projects.According to the existing creep model,a formula for creep prediction in standard condition is presented.In association with the char-acteristics of high-performance concrete,a creep model with wide application fields and high prediction accuracy is established through parameterizing influence effects of creep.In the model,only one factor is changed and the others are under the control of standard state.Meanwhile,in order to improve accuracy of parameter,we analyze creep coef-ficient by using genetic algorithm,automatically looking for parameter.The results on the accuracy of the model show that the predicted values are in good agreement with the experimental values,and it can be applied not only to ordi-nary concrete,but also to high-performance concrete.Furthermore,the calculation is simple and the model can pro-vide a reference for the design and engineering applications.关键词
高性能混凝土/标准状态/徐变模型/徐变系数/预测公式Key words
high-performance concrete/standard state/creep model/creep coefficient/predication formula分类
建筑与水利引用本文复制引用
苏骏,李威..高性能混凝土的徐变影响因素及模型优化[J].长江科学院院报,2015,(12):120-124,5.基金项目
湖北省自然科学基金资助项目 （）
