【摘要】 详细阐述了国内外3种架空送电线路杆塔结构设计标准的角钢构件轴心受拉应力和受压应力的计算原理,探讨了3种标准关于长细比修正系数的取值以及构件端部约束条件的合理性。采用3种标准对同一典型构件进行承载力计算,计算结果表明,采用不同标准计算出的构件承载力有所不相同。指出在实际工程应用中,须结合构件的实际应用范围和材料加工情况来判断输电杆塔的安全性能,合理选择其承载力计算方法。更多还原

【Abstract】 The paper introduces calculation principles of axial tension stress and axial pressure stress of angle steel members based on three structural design standards for overhead transmission towers and poles and discusses reasonableness of the three standards in terms of value of slender ration correction factor and condition of end restraints.The bearing capacity of the same typical member is calculated by using three standards,and the result of which shows that the calculated bearing capacities in accordance different standards vary from each other.The paper suggests reasonably choosing bearing capacity calculation method in accordance with practical application range of members and material processing to determine safety feature of transmission towers and poles.更多还原