【摘要】 为了提高高层建筑的抗震能力,高层建筑用钢应具有较强的塑性变形一致性。塑性变形一致性主要是通过降低钢的屈强比来实现,因此,屈强比是衡量高层建筑用钢抗震性能的一个重要参数。对不同化学成分的钢进行了控轧控冷试验,得出了化学成分、晶粒尺寸、珠光体和贝氏体的含量及M/A岛状物对屈强比的影响,并且根据试验数据回归出了屈服强度、抗拉强度的计算公式。更多还原

【Abstract】 In order to increase the earthquake-resistance of high-rise buildings,the steels used must possess strong consistency in plastic deformation,due to low yield-strength ratio.Therefore,the yield-strength ratio is an important parameter to judge the earthquake-resistance of the steels.The experiments of controlled rolling and controlled cooling for different steel grades were carried out.And the effects of chemical composition,ferrite grain size,content of pearlite and bainite and M/A islands on yield-strength ratio were studied and regression formulas for yield and tensile strength were obtained.更多还原