STRENGTH AND DEFORMATION CHARACTERISTICS OF REINFORCED CONCRETE WALLS UNDER LOAD REVERSALS
STRENGTH AND DEFORMATION CHARACTERISTICS OF REINFORCED CONCRETE WALLS UNDER LOAD REVERSALS
复制标题
反向荷载作用下钢筋混凝土墙体的强度和变形特性
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
M. Kotsovos
中科院分区：
文献类型：
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作者：
I. Lefas;M. Kotsovos
研究了加载历史和修补方法对钢筋混凝土墙体结构特性的影响。在不同的水平循环荷载作用下，对大比例尺细长墙体模型进行了破坏试验、卸载、修复和破坏试验。结果发现，虽然仅修复受压区的损坏区域就足以完全恢复墙的强度，但额外使用环氧树脂修复主要的弯曲和倾斜腹板裂缝只导致结构特征的轻微改善，后者明显低于原始墙的结构。这些结果符合压缩路径的概念，并表明与普遍认为的相反，压缩带是剪切阻力的主要贡献者。
The effects of loding history and repair methods on the structural characteristics of reinforced concrete walls was investigated. Large scale slender wall models were tested to failure, then unloaded, repaired, and retested to destruction under various regimes of cyclic horizontal loading. It was found that, while repairing only the damaged regions of the compressive zone was sufficient to fully restore wall strength, the additional use of epoxy resins to heal major flexural and inclined web cracks led only to a marginal improvement of the structural characteristics, the latter being distinctly inferior to those of the original walls. Such results are in compliance with the concept of the compressive force path and demonstrate that, in contrast to widely held views, the compressive zone is the main contributor to shear resistance.