【摘要】 通过对9根高强钢筋混凝土梁的疲劳试验进行研究,用考虑混凝土和钢筋应变增大系数的解析刚度法提出了高强钢筋混凝土梁在疲劳荷载作用下的刚度计算公式,并对公式中的各项系数进行了分析,最后将计算值和试验值进行了比较,计算结果与试验结果符合良好。更多还原

【Abstract】 Fatigue experiments of 9 high strength reinforced concrete beams are studied, calculation means and formulae of rigidity of high strength concrete beams under fatigue load are put forward with the analytical method with consideration of the strain-increase coefficient of concrete and bar,and coefficients in the formulae are analyzed.Finally the calculation result and experiment result are compared,which indicates a good agreement between them.更多还原