钢筋混凝土转角楼梯的实用计算方法探讨

Discussion of Calculation Method for Reinforced Concrete Corner Stairs

针对实际工程,采用有限元法对钢筋混凝土转角楼梯的受力性能进行了分析,并与简化的计算方法进行了对比。分析结果表明,通过合理选择的有限元分析模型,较好地反应了转角楼梯的受力情况。根据有限元分析的结果选定简化的实用计算模型,通过计算,实用计算模型得到的结果与有限元结果相近,从而解决了以往转角楼梯这个空间超静定结构不能手算的课题。为了验证结论的正确性,在工程设计时,用实用计算模型得到的内力进行承载力计算,并将承载力计算的结果应用于实际工程。事实证明,本文建议的实用计算方法可靠,能够用到工程实践中。

Being aimed at the project, the mechanic behavior of corner stairs of reinforced concrete is analyzed by FEM method, and the computing results are compared with that of practical calculation method simplified. The results show that FEM model selected reasonably can well reflect the condition of inner forces in corner stairs. The practical calculation model simplified is selected according to the results of FEM, and its results are almost equal to that of FEM. So we solve the question which can not be resolved in the past because it belongs to statically indeterminate systems. For the sake of appraisal, capacity is computed by the internal forces of the practical calculation model in design of a project. The practice shows that the practical calculation method is reliable.