Seismic behavior of columns with PVA fiber high strength reinforced concrete in potential plastic region

被引：0

作者：

Ziyi Z. ^{[1
,2
]}

Changqing M. ^{[1
,2
]}

Chuanzhi S. ^{[3
]}

机构：

[1] Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing

[2] School of Civil Engineering, Southeast University, Nanjing

[3] School of Civil Engineering and Architecture, Suqian College, Suqian

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2023年 / 53卷 / 02期

关键词：

axial compression ratio; OpenSees; polyvinyl alcohol (PVA) fiber concrete; PVA fiber volume fractions; seismic performance test; shear-to-span ratio;

D O I：

10.3969/j.issn.1001-0505.2023.02.007

中图分类号：

学科分类号：

摘要：

In order to clarify the effects of axial pressure ratio, shear-to-span ratio and PVA fiber volume fractions on the seismic performance of localized PVA fiber high-strength concrete columns, eight high-strength reinforced concrete columns with different axial pressure ratios (0.2, 0.3 and 0.4), shear-to-span ratios (3.23, 4.15 and 5.07) and PVA fiber volume fractions (0, 0.3%, 0.5% and 0.7%) were subjected to seismic performance test. The effects of PVA fiber volume fractions, axial compression ratio and shear-to-span ratio on the energy dissipation capacity, self-resetting capacity, strength degradation performance, stiffness degradation performance and bending moment curvature relationship of high-strength reinforced concrete columns were analyzed. The finite element simulation software OpenSees was used as a platform to establish the specimen model and to extend the analysis of axial compression ratio and shear-to-span ratio. The results show that the ductility and energy dissipation capacity of PVA fiber concrete columns are significantly better and the seismic performance is better; meanwhile, the axial pressure ratio and shear-span ratio have significant effects on the seismic performance, and the PVA fiber volume fractions has more influence on it; the established finite element model has high accuracy. © 2023 Southeast University. All rights reserved.

引用

页码：242 / 251

页数：9

共 11 条

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