首页|低周反复荷载作用下SFCBs-RPC框架力学性能分析

低周反复荷载作用下SFCBs-RPC框架力学性能分析

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为研究低周反复荷载作用下钢-FRP复合筋(steel-FRP composite bar,SFCB)活性粉末混凝土(reactive powder concrete,RPC)框架力学性能,基于有限元软件ABAQUS对一榀钢筋混凝土框架在低周反复荷载作用下的力学性能进行分析,模拟结果与试验吻合性良好.在此基础上,建立SFCBs-RPC框架模型,分析混凝土强度、轴压比及柱纵筋配筋率对SFCBs-RPC框架抗震性能的影响.结果表明,SFCB-RPC框架相比钢筋RPC框架具有良好的二次刚度,屈服后承载力提升明显且残余变形率更小,具有良好的变形恢复能力和延性;RPC框架相比普通混凝土框架拥有更高的承载力和延性;框架延性随轴压比和柱纵筋配筋率的增大而降低;SFCBs-RPC框架总体呈现良好延性.
Study on mechanical performance of SFCBs-RPC frame under low cyclic loading
In order to study the mechanical properties of reactive powder concrete(RPC)frames reinforced with steel-FRP composite bars(SFCBs)under low reversed cyclic loading,a steel reinforced normal concrete frame is established by finite element software ABAQUS and its mechanical properties under low reversed cyclic loading is analyzed.The simulate results are in good accordance with experimental results.Then the models of SFCBs reinforced RPC frame are established,the effects of concrete strength,axial compression ratio and column longitudinal reinforcement ratio on seismic performance of SFCBs-RPC frames are investigated.The results indicate that compared with steel-RPC frames,SFCBs-RPC frames exhibit good post-yielding stiffness which significantly improves the bearing capacity of frames after yielding and reduces its residual deformation,indicating good deformation recovery ability.SFCBs-RPC frames has higher ductility than RPC frames reinforced with BFRP(basalt fibre reinforced polymer)bars.RPC frames has greater bearing capacity and ductility than reinforced normal concrete frames.The ductility of specimen decreases gradually with the increase of axial compression ratio and column longitudinal reinforcement ratio.The SFCBs-RPC frames generally exhibit good ductility.

steel-FRP composite barreactive powder concreteconcrete frameseismic performanceparametric analyse

罗来勇、姚子豪、姚山、葛文杰、Ashraf Ashour

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江苏扬建集团有限公司,江苏扬州 225002

扬州大学建筑科学与工程学院,江苏扬州 225127

甘肃省工程设计研究院有限责任公司,甘肃兰州 730030

钢-FRP复合筋 活性粉末混凝土 混凝土框架 抗震性能 参数分析

科技部"高端外国专家引进计划"项目扬州市科技计划项目-市校合作专项甘肃省建设科技计划项目2022年度(下半年)江苏省土木建筑学会科研课题扬州市建设科技计划项目

G2022014054LYZ2022194JK2021-19202312

2024

10.13614/j.cnki.11-1962/tu.2024.05.007

建筑科学
中国建筑科学研究院

建筑科学

CSTPCD北大核心
影响因子：1.113
ISSN：1002-8528
年,卷(期)：2024.40(5)
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