华侨大学学报（自然科学版）2018，Vol.39Issue(2)：186-191,6.DOI:10.11830/ISSN.1000-5013.201611071
预压比对预应力钢绞线-聚合物砂浆加固RC板受弯性能的影响
Study on Preloading Ratio on Flexural Behavior of RC Slabs Strengthened With Prestressed Strand and Polymer Mortar
摘要
Abstract
A finite element (FE) model for reinforced concrete (RC) slabs strengthened with prestressed strand and polymer mortar is established.The FE model is validated by available test results.The validated FE model is then used to study the influence of different load conditions,preloading ratios and prestress degree on the flexural behavior of the strengthened RC slabs.The FE analysis indicates:the birth and death of element can simulate effectively the influence of secondary load.Under the condition of secondary load,the reinforcement of prestressed strand is similar to that under the condition of primary load.When the preloading ratio is less than 0.1,the specimen deforms elastically due to the minor damage in the concrete,and the secondary load effect can be neglected.When preloading ratio is greater than 0.1,plastic deformation occurs in the specimen due to considerable damage in the concrete,and the secondary load effect should be taken into account.关键词
预应力钢绞线/钢筋混凝土板/受弯加固/数值模拟/生死单元Key words
prestressed strand/reinforced concrete slabs/flexural strengthening/numerical simulation/birth and death of element分类
建筑与水利引用本文复制引用
张世江,陈海,刘阳,叶勇,柴振岭..预压比对预应力钢绞线-聚合物砂浆加固RC板受弯性能的影响[J].华侨大学学报（自然科学版）,2018,39(2):186-191,6.基金项目
国家自然科学基金资助项目(51378228,51578254,51308236) （51378228,51578254,51308236）
福建省自然科学基金资助项目(2015J01212,2014J05061) （2015J01212,2014J05061）
福建省泉州市科技计划项目(2015Z142) （2015Z142）
