Seismic behavior of polypropylene fiber concrete column in saline soil environment

被引：0

作者：

Lu H.-B. ^{[1
]}

Zhang G.-T. ^{[1
,2
]}

Liu S.-T. ^{[1
]}

Li X.-F. ^{[1
]}

Han X. ^{[1
]}

机构：

[1] College of Civil Engineering and Architecture, Xinjiang University, Urumqi

[2] Xinjiang Key Laboratory of Building Structures and Earthquake Resistance, Urumqi

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2023年 / 57卷 / 01期

关键词：

coupled loads in saline soil environment; low-cycle cyclic load; polypropylene fiber lithium slag concrete (PLiC); seismic performance;

D O I：

10.3785/j.issn.1008-973X.2023.01.012

中图分类号：

学科分类号：

摘要：

Eight polypropylene fiber lithium slag concrete (PLiC) columns and three reinforced concrete (RC) columns were designed and manufactured with the days of erosion, axial compression ratio and coupling stress ratio as the main variables in order to analyze the seismic performance of PLiC columns under coupled loads in saline soil environment. A solution with a mass fraction of 8.3% NaCl+10% Na2SO4 was used to soak the specimens after applying a continuous load. Eleven specimens were subjected to low-cycle cyclic load tests respectively, and the failure modes, hysteresis curves, skeleton curves, ductility and stiffness degradation of each specimen were analyzed after the immersion erosion was completed. The variation rules of ductility and energy dissipation capacity of PLiC column and RC column under different variables were clarified. Results show that PLiC column is better than RC column in salt soil erosion resistance. The energy dissipation capacity of PLiC column and RC column decreases firstly and then increases with the increase of erosion time, and ductility continuously decreases, while the decreasing amplitude of PLiC column is smaller than that of RC column. The total energy dissipation of PLiC column increases with the same loading displacement when the axial compression ratio increases from 0.2 to 0.3. The energy dissipation and stiffness degradation of the specimen decrease with the increase of coupling stress ratio. © 2023 Zhejiang University. All rights reserved.

引用

页码：111 / 121

页数：10

共 24 条

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