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中文摘要：
现行钢筋混凝土结构设计方法是基于小尺寸构件的试验研究建立起来的,大尺寸构件的设计的科学性和合理性有待进一步研究。本文制作2组4根钢筋混凝土偏心受压短柱,偏心距为0.6h_0,试件的截面几何尺寸分别为200 mm×200 mm、400 mm×400 mm。研究相同偏心距下,不同尺寸的钢筋混凝土偏心受压短柱的破坏特征,极限承载力及截面应变性能。研究发现,大尺寸试件的承载力有所降低,大尺寸试件的截面应变分布符合平截面假定的程度不如小尺寸试件,尺寸效应对试件曲率亦有影响。
英文摘要：
Existing reinforced concrete structural design method is based on the experimental study of small size components.The design of large-size components of science and rationality needs further study.This paper produced 4 columns of 2 groups reinforced concrete,eccentricity is 0.6h_0,cross-sectional geometry of the specimen is 200 mm×200 mm,400 mm×400 mm.This paper studies damage characteristics,ultimate strength and sectional strain properties of reinforced concrete columns under eccentric loading in the same eccentricity and different sizes.Study found that the bearing capacity of large-size specimens decreased,large-size section of specimen strain distribution is lower than the small-size of the extent consistent with the plane section assumption.Size effect of the specimen curvature is also observed.
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