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本文试图参考国外一些关于考虑弹性滞后由混凝土徐变产生的超静定内力的计算方法,推导出予应力组合简支梁内力重分布的实用计算法,以达到节约钢材的目的、具体计算方法有:一、由于桥面板与主梁混凝土的收缩度差引起的内力计算;二、由于桥面板与主梁的徐变差产生的内力计算;三、结合面剪应力的计算;四,主拉应力的计算。
This paper attempts to refer to some abroad on considering the elastic hysteresis creep caused by concrete excess internal static computational method to deduce the prestressed combination of simply supported beam internal force redistribution of practical calculation method in order to achieve the purpose of saving steel, the specific calculation methods are : First, due to the bridge deck and the main beam concrete contraction caused by poor internal force calculation; Second, due to the bridge deck and the main beam of the creep difference between the internal force calculation; Third, combined with surface shear stress calculation; Fourth, the main tensile stress Calculation.