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首页> 外文期刊>KSCE journal of civil engineering >Study on Calculation Method of Long Term Deformation of RAC Beam based on Creep Adjustment Coefficient
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Study on Calculation Method of Long Term Deformation of RAC Beam based on Creep Adjustment Coefficient

机译：基于蠕变调整系数的RAC梁长期变形计算方法研究

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摘要

The creep shrinkage of concrete is an important factor in the long-term deformation of concrete structures. It is also a key link for solving long-term deformation calculation accuracy and complex calculation forms. In this paper, a 1200-day long-term deformation test was conducted on beams with 0%, 50%, and 100% substitution ratios of recycled coarse aggregate. Meanwhile, based on the principle of virtual work, the creep coefficient of recycled concrete is introduced into the calculation of additional curvature of the beam section, and the formula for calculating the long-term deformation of recycled concrete is established. According to the size of recycled coarse aggregate, through the calculation of creep and shrinkage of concrete, the regeneration adjustment coefficient of concrete creep and shrinkage, the calculation results into three typical model of ordinary concrete creep and shrinkage, creep and shrinkage of concrete and regeneration model of deformation calculation of long period, the calculated and experimental results agree well; based on this, the deflection increase coefficient is proposed, which simplifies the long-term calculation formula. It not only can meet the calculation accuracy requirements, but also can be easily adapted to engineering promotion.
机译：混凝土的蠕变收缩是混凝土结构长期变形的重要因素。它也是解决长期变形计算精度和复杂计算形式的关键环节。在本文中，对再生粗骨料的替代比为0％，50％和100％的梁进行了1200天的长期变形试验。同时，根据虚功原理，将再生混凝土的蠕变系数引入到梁截面附加曲率的计算中，建立了计算再生混凝土长期变形的公式。根据再生粗骨料的大小，通过计算混凝土的蠕变和收缩率，混凝土的蠕变和收缩率的再生调整系数，将计算结果分为普通混凝土蠕变和收缩率，混凝土的蠕变和收缩率以及再生的三个典型模型。长期变形计算模型，计算结果与实验结果吻合良好；在此基础上，提出了挠度增大系数，简化了长期计算公式。它不仅可以满足计算精度要求，而且可以很容易地适应工程推广。

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