织物增强HDC加固砖柱受压性能试验研究  

Experimental Study on Compressive Behavior of Masonry Columns Strengthened with Textile Reinforced High Ductile Concrete

作　　者：邓明科[1,2] 胡娴 李彤 张聪 郭莉英 DENG Mingke;HU Xian;LI Tong;ZHANG Cong;GUO Liying(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education(XAUAT),Xi’an 710055,China;China Ruilin Engineering Technology Co.,Ltd,Nanchang 330031,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]结构工程与抗震教育部重点实验室(西安建筑科技大学),陕西西安710055 [3]中国瑞林工程技术股份有限公司,江西南昌330031

出　　处：《湖南大学学报（自然科学版）》2023年第5期43-54,共12页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51878545);住房和城乡建设部项目(2019-K-043);西安市科技创新计划项目(20191522415KYPT015JC017)。

摘　　要：为研究纤维网格高延性混凝土(TRHDC)加固砖柱的受压性能,进行了8组砖柱的受压试验;基于各试件的破坏形态、承载力和加固面层横向拉应变,分析了不同加固方式、偏心距、纤维网格种类和层数对加固效果的影响.结果表明:TRHDC面层能够提高砖柱的整体性,改善其脆性破坏特征;砖柱承载力随玻璃纤维网格层数的增加而增大;由于碳纤维织物具有较高的抗拉强度和弹性模量,其约束效果优于玻璃纤维网格高延性混凝土;TRHDC面层的约束效果随着偏心距的增大而降低.评估了砌体结构设计规范和相关文献中的分析模型在预测TRHDC加固砖柱抗压强度及应变方面的适用性,理论值与试验值吻合较好.To understand the compressive behaviors of the masonry columns strengthened with textilereinforced highly ductile concrete(TRHDC),the compression tests of 8 sets of masonry columns were carried out.The influence of different reinforcement methods,eccentricity,type of textiles,and the number of textile layers on retrofitting effectiveness was investigated based on the failure modes,load-bearing capacity,and transverse tensile strain of the strengthening layer.The results showed that the TRHDC jacket improved the integrity of masonry col⁃umns and their brittle failure.Moreover,the compressive strength of masonry columns was enhanced with the in⁃crease of glass fiber textile layers.The lateral confinement of carbon fiber TRHDC was greater than that of glass fiber TRHDC due to the high tensile strength and elastic modulus of carbon fiber textiles.Besides,the confinement effect of TRHDC was weakened by eccentricity.The analytical models were available in the literature,and codes were evaluated based on the predicting the compressive strength and corresponding axial strains of masonry columns strengthened with TRHDC.The predicted values have good agreement with the experimental results.

关 键 词：纤维网格 高延性混凝土 加固 砖砌体短柱 受压承载力 

分 类 号：TU362[建筑科学—结构工程]