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首页> 外文期刊>The HKIE Transactions >Effects of sustained axial loads on steel-reinforced concrete columns
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Effects of sustained axial loads on steel-reinforced concrete columns

机译：持续轴向载荷对钢筋混凝土柱的影响

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Steel-reinforced concrete (SRC) columns have been widely used over the past few decades. However, very limited research has been conducted on the time-dependent behaviour of these columns caused by creep and shrinkage under sustained loading. The results of an experimental study of the long-term behaviour of short SRC columns under sustained axial loading and a further test of their ultimate axial capacity are presented in this paper. Long-term axial deformations due to shrinkage and creep of the concrete are recorded. In the analysis of the test results, time analysis of the SRC columns under sustained axial loads using the age-adjusted effective modulus method is proven to be suitable by employing the ACI 209 model for the prediction of shrinkage and the CEB-FIP90 model for the prediction of creep. The ultimate strengths of the columns after long-term loading are also determined, and it is shown by the results that the sustained axial loads have no significant effect on the axial compressive strength of the SRC columns.
机译：在过去的几十年中，钢筋混凝土（SRC）柱已被广泛使用。但是，对于这些柱在持续载荷下由蠕变和收缩引起的随时间变化的行为进行的研究非常有限。本文介绍了短SRC柱在持续轴向载荷下长期行为的实验研究结果，以及对它们的极限轴向承载力的进一步测试。记录由于混凝土的收缩和蠕变引起的长期轴向变形。在测试结果分析中，通过使用年龄调整后的有效模量法对SRC柱在持续轴向载荷下的时间进行分析，证明是合适的，方法是采用ACI 209模型来预测收缩，而CEB-FIP90模型则用于收缩率预测。蠕变的预测。还确定了长期荷载后柱的极限强度，结果表明，持续的轴向载荷对SRC柱的轴向抗压强度没有显着影响。

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