摘要
在钢筋混凝土结构补强中,收缩开裂严重影响了结构补强后的耐久性和强度的恢复.本文提出了收缩应力发展的数学与力学模型,建立了与时间相关的非线性分析方法.根据结构补强试验结果表明该分析方法是可行的.这种分析方法能预计修复材料在补强结构中的应力发展和开裂情况.分析表明收缩应力不仅与修复材料的性能有关,而且与本体结构的刚度,结构的连续性有关.
In repaired reinforced concrete structure, cracking due to restrained shrinkage is a main faclor influencing durability and strength. An analytical method based on the mathematical and mechanical models is presented in the paper.The comparsion between results of test and analysis show that the method can predict the development of shrinkage stress and cracking. Analysis shows that shrinkage stress is not only concerned with the properties of the pepair material, but also concerned with the , behavior of the repaired structure itself,such as. the rigidity of section and the continuity of structure.
出处
《土木工程学报》
EI
CSCD
北大核心
1996年第1期33-40,共8页
China Civil Engineering Journal
基金
江苏省应用基础基金资助项目
