考虑材料非线性钢筋混凝土井式梁的程序设计

Considering material nonlinear reinforced concrete waffle program design

采用平截面假定,忽略结构抗扭性能非线性,调用弯矩—曲率关系的子程序,通过对空间梁单元进行变刚度搜寻,编制考虑材料非线性的钢筋混凝土井式梁非线性计算的有限元程序,最后利用本程序进行算例分析,验证了程序的正确性。

On the assumption of the plane section, neglecting the structure＇ s twist nonlinear, using the moment-curvature relationship, this paper adopt matrix-displacement method to design program. In the analysis, continuously searching the real bending stiffness of the beam, we will calculate the force and deformation of waffle and achieve the aim of considering the material nonlinear. At last we use the program analyze an engineering case.