配筋砌块砌体柱偏压承载力试验研究与分析

对10个配筋砌块砌体柱进行了偏心荷载作用下的承载力试验研究,了解了该类柱子的受力与变形性能、破坏过程与形态等特征,考察了偏心距、芯柱纵向钢筋等因素对承载力的影响,并对截面应变和芯柱钢筋应力进行了加载全过程记录。借助钢筋混凝土结构的分析方法,推导了配筋砌块砌体柱在偏心荷载作用下的承载力公式,该方法在形式上与普通混凝土偏心受压构件保持了一致性,但在纵向弯曲对承载力的影响上又借鉴了砌体结构的表达式,试验结果证明这一方法是得当的。

EXPERIMENTAL STUDY AND ANALYSIS ON BEARING CAPACITY OF REINFORCED CONCRETE MASONRY COLUMNS UNDER ECCENTRIC LOAD

The 10 reinforced concrete masonry columns have been tested under eccentric load.The bearing capacities,the load-deformation relationship,the failure process and mode have been studied.The influence factors to the bearing capacity are considered,such as eccentricity,the rebar in the button stem,and the whole process of sectinal strain and stress of bar have been noted.The formula to calculate the bearing capacity of the reinforced concrete masonry columns subject to eccentric load which is based on concrete theory has been got.The method is according with concrete members subject to eccentric load formally,but the expression form about the effect of longitudinal curvature on the bearing capacities has been used for reference from masonry structure,which is verified proper by the test results.