[1]周颖,钟光淳,肖意.钢-聚乙烯醇混杂纤维混凝土剪力墙抗震性能试验研究[J].世界地震工程,2021,(01):011-25.
 ZHOU Ying,ZHONG Guangchun,XIAO Yi.Experimental study on the seismic behavior of steel-polyviny alcohol hybrid fiber reinforced concrete shear walls[J].,2021,(01):011-25.
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钢-聚乙烯醇混杂纤维混凝土剪力墙抗震性能试验研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2021年01期
页码:
011-25
栏目:
出版日期:
2021-02-22

文章信息/Info

Title:
Experimental study on the seismic behavior of steel-polyviny alcohol hybrid fiber reinforced concrete shear walls
作者:
周颖 钟光淳 肖意
同济大学 土木工程防灾国家重点实验室,上海 200092
Author(s):
ZHOU Ying ZHONG Guangchun XIAO Yi
State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
钢-聚乙烯醇混杂纤维混凝土剪力墙低周往复加载分布位置抗震性能
Keywords:
steel-PVA hybrid fiber reinforced concreteshear wallquasi-static testdistribution locationseismic performance
分类号:
TU
摘要:
本文设计了1片普通混凝土剪力墙试件和5片混杂纤维混凝土剪力墙试件,进行低周往复加载试验,研究混杂纤维混凝土分布位置和高度对剪力墙抗震性能的影响。根据拟静力试验数据,分析了墙体试件的滞回曲线、骨架曲线及关键点、位移延性、刚度退化性能、耗能能力以及关键位置钢筋应力应变分布情况。结果表明:(1)剪力墙试件中采用混杂纤维混凝土的区域以均匀的水平裂缝为主,有效控制了剪力墙的斜裂缝的产生,最终表现出弯曲破坏模式。(2)相比混杂纤维混凝土分布在约束边缘区域,混杂纤维混凝土分布在底部的试件滞回曲线更加饱满,耗能能力更好。(3)混杂纤维混凝土分布高度越高,滞回曲线越饱满。当分布高度大于0.3h (h为全长)时,混杂纤维混凝土分布高度的提升对承载能力和变形能力的影响较小。(4)混杂纤维混凝土的掺入提高了剪力墙的抗剪性能,在一定程度上可替代水平分布筋。
Abstract:
In order to conduct research on the seismic behavior of hybrid fiber reinforced concrete (HyFRC) shear walls, one ordinary concrete shear wall and five HyFRC shear wall specimens were designed, and the quasi-static tests were carried out. The hysteretic curves, skeleton curves, displacement ductility, stiffness degradations, energy dissipation capacities and stress-strain behaviors of steel bars in key position of shear wall specimens were investigated. The results shows that:(1) The HyFRC region in shear wall holds horizontal cracks and control the production of shear cracks. The final failure model is flexural failure. (2) Compared with the specimen with HyFRC distributed in boundary elements, the specimens with HyFRC distributed in bottom area have fuller hysteretic curve and stronger energy dissipation capacity. (3) The higher the distribution height of HyFRC is, the fuller the hysteretic curve is. When the distribution height is more than 0.3 h (h is the full length of shear wall), the increase of the distribution height of HyFRC has little effect on the bearing capacity and deformation capacity of shear walls. (4) The incorporation of HyFRC improves the shear resistance of shear wall and can replace the horizontal distributed reinforcements to a certain extent.

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备注/Memo

备注/Memo:
收稿日期:2020-4-17;改回日期:2020-9-30。
作者简介:周颖(1978-),女,工学博士,教授,主要从事结构抗震研究.E-mail:yingzhou@tongji.edu.cn
更新日期/Last Update: 2021-02-22