Calculating and analyze the compression bending strength according to the method of reinforced co ncrete structure design code and " the modified simple superposition method " , the distribution of axial load is obtained , then , the influence of creep is considered and the formulation of distribution of axial load between reinforced concrete and steel is proposed . and steel is proposed 运用现行混凝土结构设计规范和改进后的简单叠加方法分别计算试件的压弯承载力，通过对比分析，推得了src柱的轴力分配，然后在考虑了徐变系数的影响后，对空腹式钢骨混凝土柱轴压比限值提出建议。
Because the truss src members includes steel , the ultimate flexural strength of those is more increased than the reinforced concrete ( rc ) members . on the other hand , it is often that in the application the contradiction of steel between beams and columns can not be solved , the lattice type src columns is proposed in this case 不过，与普通钢筋混凝土结构相比，空腹式src结构由于配置了钢骨，大大提高了构件的承载力，另一方面，对于实腹式src构件，在实际应用中经常遇到无法解决梁与柱交叉穿筋的问题，这时，宜采用空腹式钢骨混凝土。
Based on the above contribution the method is used to evaluate the accuracy and limitation of the simplified design methods proposed by the chinese jgj 138 - 2001 specification and yb9082 - 97 specification , which are only suitable for concrete encased composite columns of rectangular cross section with doubly symmetric structural steel . several valuable conclusions and suggestions for practice design are obtained 在此基础上，利用计算机程序对国内两个组合柱设计规程，建设部颁布的《型钢混凝土组合结构技术规程》 ( jgj138 - 2001 )和冶金部颁布的《钢骨混凝土结构设计规程》 ( yb9082 - 97 )中建议的配置对称结构钢的矩形截面型钢-砼柱的简化设计方法进行了分析和评估，获得了一些对工程设计有价值的结论和建议。
