The Research On The Calculate Rigidity Of R. C. Frame Beam And The Research On Amplitude Regulation Coefficient Of Bending Moment Within Beam

In structural design, calculation of R.C. beam and reinforcement are calculated according to the rectangle beam, and not according to the T-shaped beams. Instead of beam slab of flange is objective existence. That is to say, in the design process and we have not according to the T-shaped sections of the stiffness calculation, beam beams. So in the structural design process, we will set beam by stiffness amplification coefficient of beam slab to consider the stiffness of the value contribution, but no one set and the exact value standard. In this paper, by a finite element software ANSYS frame model of linear elastic computation and analysis, we get the beam equals about the stiffness amplification coefficient between thickness and high ratio of the relationship;So when the depth of beam is smaller, the stiffness amplification coefficient values can be close to 1.9; When the depth of beam is higher, the stiffness amplification coefficient values can be close to 1.6.R.C. beam bending of the amplitude values will make structure reasonable and internal force of the actual deformation is close to the constant by stiffness elastic theory calculation results. Meanwhile the practical engineering construction, improve the convenient construction quality and efficiency. In this paper, by using ANSYS establishment of reinforced concrete structures, the nonlinear analysis model for a moment attenuation coefficient get that structural design is reasonable when the moment attenuation coefficient can be close to 0.85.