矿渣基地聚物混凝土柱抗震性能研究  

Study on seismic performance of slag-based geopolymer concrete columns

作　　者：卢海勇 胡翔 毛宇光[1,2,3] 苏捷 杜运兴 刘翼玮[1,2,3] 李晃 史才军[1,2,3] LU Haiyong;HU Xiang;MAO Yuguang;SU Jie;DU Yunxing;LIU Yiwei;LI Huang;SHI Caijun(Key Laboratory for Green and Advanced Civil Engineering Materials&Applied Technology of Hunan Province,College of Civil Engineering,Hunan University,Changsha 410082,China;International Joint Laboratory for Green&Advanced Civil Engineering Materials of Hunan Province,Hunan University,Changsha 410082,China;Key Laboratory of Building Safty&Energy Conservation of the Ministry of Education,Hunan University,Changsha 410082,China;China Construction Fifth Engineering Bureau Co.,Ltd.,Changsha 410082,China)

机构地区：[1]湖南大学土木工程学院,绿色先进土木工程材料及应用技术湖南省重点实验室,湖南长沙410082 [2]湖南大学湖南省绿色先进土木工程材料国际联合实验室,湖南长沙410082 [3]湖南大学建筑安全与节能教育部重点实验室,湖南长沙410082 [4]中国建筑第五工程局有限公司,湖南长沙410082

出　　处：《广西大学学报（自然科学版）》2024年第3期475-489,共15页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金重点项目(52278257)。

摘　　要：为了研究不同强度等级的矿渣基地聚物混凝土柱的抗震性能,设计了3个普通混凝土悬臂柱试件和3个矿渣基地聚物混凝土悬臂柱试件,通过低周反复荷载试验,对地聚物混凝土柱的破坏模式、裂缝发展、滞回性能、位移延性、耗能性能、刚度与强度退化和承载力等进行了评估,分析了混凝土种类、混凝土强度对试件抗震性能的影响。结果表明,在低周反复荷载作用下,与普通混凝土试件相比,矿渣基地聚物混凝土柱的抗震性能并未明显改善;提高地聚物混凝土强度会改变地聚物混凝土柱的破坏模式,从而对部分抗震性能(延性、耗能能力)产生不利的影响;验证表明《混凝土结构设计规范》(GB 50010—2010)中受弯承载力计算公式对于地聚物混凝土构件的计算结果偏小,拓展到工程应用中偏安全。To study the seismic performance of slag-based geopolymer concrete columns with different strength levels,three ordinary concrete cantilever column specimens and three slag-based geopolymer concrete cantilever column specimens were designed.through the low cyclic loading test,the failure mode,crack development,hysteretic performance,displacement ductility,energy dissipation performance,stiffness and strength degradation,and load-bearing capacity of geopolymer concrete columns were evaluated,and the influence of concrete type and concrete strength on the seismic performance of the specimens was analyzed.The research results show that the seismic performance of slag-based geopolymer concrete column is not significantly improved compared with ordinary concrete specimen under low cyclic loading;Increasing the strength of geopolymer concrete will change the failure mode of geopolymer concrete columns,thus adversely affecting partial seismic performance(ductility,energy dissipation capacity);the validation of the results shows that the bending load capacity calculation formula in Code for the Design of Concrete Structures(GB 50010—2010)underestimates geopolymer concrete members,and it is safer to extend it to engineering applications.

关 键 词：结构抗震性能 结构抗震设计 地聚物混凝土柱 钢筋混凝土柱 低周反复荷载试验 

分 类 号：TU375.3[建筑科学—结构工程] TU352.11