Abstract: Basic mathematical knowledge is used to deduce the formulas of the column with pressure and moment.According to mechanical theory,ultimate capability of steel tube filled in concrete column with pressure and moment is calculated.Based on the above method,the engineering software Matlab is used to design the program.Some questions are expounded,such as how to divide section,how to modify the parameters,how to judge the limited load,and how to search the value of ultimate capability.Compared with the result of experimentation,the computed results through the program can satisfy the needs of practice.

Key words: steel tube filled in concrete column, ultimate capability, Matlab, pressure and moment, the limited load

摘要： 应用基本的数学理论,推导出压弯柱的应变、挠度和转角计算公式。然后根据简单的力学知识进行压弯柱极限承载力的计算。根据以上计算方法采用工程软件Matlab 6.0进行钢管混凝土压弯柱极限承载力的程序编制,编制过程中涉及到的截面划分、参数调整、极限荷载判定以及加载的程序处理方法都给予了介绍。最后经与试验比较,该程序计算结果能够满足实际工程需要。

关键词: 钢管混凝土柱, 极限承载力, Matlab, 压弯作用, 极限荷载判定