【摘要】 分析了已有钢筋混凝土烟囱筒身开洞对其截面抗力特性的影响，总结了加固改造的不同方案，结合工程实践进行了有限元分析，探讨了开洞筒身水平堆面承载能力的计算方法，提出了已有烟囱开洞加固改造的基本设计原则。更多还原

【Abstract】 The effect of flue-opening remaking in the existing R.C. chimney,s shell upon the sections resistance to load (the bending moment, the axial force and so on) is analyzed. On the basis of engineering practice, the flue-opening of chimney is analyzed by using finite element method. The basic design method of opening,strengthening, remaking big tunnel opening on the shell of R.C. chimney,s is proposed.更多还原