Tests for flexural behavior and size effects of RC cantilever beams subjected to seismic loads

被引：0

作者：

Jin L. ^{[1
]}

Su X. ^{[1
]}

Li D. ^{[1
]}

Du X. ^{[1
]}

机构：

[1] Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of Technology, Beijing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2017年 / 36卷 / 13期

关键词：

Flexural-tensile strength; Low cyclic loading; Reinforced concrete (RC) cantilever beam; Seismic performance; Size effect;

D O I：

10.13465/j.cnki.jvs.2017.13.003

中图分类号：

学科分类号：

摘要：

With increase in structures' sizes, correctly predicting the varying trend of aseismic performance and anti-bending strength of reinforced concrete (RC) cantilever beams under seismic loads is of great importance to assess the safety of RC frames. Here, five groups of RC cantilever beams with geometric similarity and a shear span ratio of 4 were designed and tested under low cyclic loading. The relationships between beams' sizes and their mechanical behaviors including failure pattern, ductility, energy-dissipating capacity, stiffness degradation and bending-bearing capacity were explored. The results indicated that (1) the failure patterns of all the tested RC beams with different structural sizes are similar, all the beams damage at the fixed end due to cumulative compressions; (2) with increase in beams' sizes, their ductility increases, but their energy-dissipating capacity and stiffness degradation do not change; (3) there are obvious size effects for the nominal anti-bending strength of these RC beams under low cyclic loading; (4) the size effects of RC cantilever beams under cyclic loading can be described well using Bažant size effect theory. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：19 / 26

页数：7

共 20 条

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