纤维编织网增强混凝土加固混凝土柱轴压性能的研究  

Research on the Axial Compression Properties of Concrete Columns Strengthened with Textile Reinforced Concrete

作　　者：尹世平[1,2] 彭驰[1,2] 艾珊霞[1,2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116 [2]中国矿业大学江苏省土木工程环境灾变与结构可靠性重点实验室,力学与建筑工程学院,江苏徐州221116

出　　处：《四川大学学报（工程科学版）》2016年第4期85-92,共8页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(51478458,51108451);江苏省自然科学基金基金项目(BK2011220);中央高校基本科研业务费专项资金资助项目(2014QNA79);中国博士后(2014T70559,2012M511337);江苏省博士后基金资助项目(1102082C)

摘　　要：为进一步探究纤维编织网增强混凝土(textile reinforced concrete,TRC)加固混凝土柱的轴心受压性能,研究纤维编织网层数、纤维编织网搭接长度及使用短切纤维改性精细混凝土作为TRC基体等因素对TRC加固混凝土柱轴心受压性能的影响。结果表明:TRC加固素混凝土方柱的破坏形态和延性得到改善,承载力提高幅度达17.32%;对于TRC加固RC柱,纤维编织网搭接长度、短切纤维改性精细混凝土对TRC约束效果影响不明显,但随着纤维编织网层数的增加,TRC约束效果明显提高,TRC加固RC柱的延性得到改善,承载力提高幅度最高可达14.74%。最后对TRC加固RC柱的极限承载力计算进行推导,并给出计算模型。研究结果可为TRC加固混凝土柱的工程应用提供参考。To further explore the axial compression performance of concrete columns strengthened with TRC, the effects of textile layers, the lap length of textile and short-cut fibers used to modify fine grain concrete as the TRC matrix on axial compression performance of TRC-strengthened columns were studied. The results indicated that the failure pattern and ductility of TRC-strengthened plain concrete column were improved ,and the beating capacity was increased by 17.32% ;for the RC columns strengthened with TRC ,the lap length of textile and short-cut fibers modifying fine grain concrete did not have obvious influence on the constraint effect of TRC, but TRC＇ s con- straint effect was increased obviously and the ductility of columns was improved with the increase of textile layers, and the bearing ca- pacity was increased up to 14.74%. Finally, calculation formulas of the ultimate bearing capacity of RC columns strengthened with TRC were deduced and the calculation model was given. The research results may provide the reference for the engineering application of TRC-strengthened concrete columns.

关 键 词：纤维编织网增强混凝土 轴心受压 纤维编织网层数 纤维编织网搭接长度 短切纤维 计算模型 

分 类 号：TU528.7[建筑科学—建筑技术科学]