Comparative analysis of the results of the application of the direct rigidity method for flat reinforcements with settlements

Abstract

The main objective of the research and writing of this article was to be able to apply the direct method of stiffness as a manual calculation and to be able to compare the results obtained with engineering software such as Ftool and SAP 2000. To this end, the agendas that were carried out in the subject of Structural Analysis 1 and 2 of the Juan Santos Atahualpa National Intercultural University of the Central Jungle, such as Q-D Systems, Primary System, Complementary System, Vectors of Deformations and finally, were taken into special consideration. the Internal Forces. We have been able to leave as an argument that in order to establish the degrees of freedom in the Q-D System, and their respective Internal Forces for all the bars that make up the framework that we have selected for development. If we verify the reinforcement, we see that it was made up of 6 bars with a cross section of 600 mm2, it presented a settlement of 25 mm (↓) at node 2 and it was also considered that it had a modulus of elasticity of 300 Gpa. The results to which we devoted ourselves were to find the internal forces, but also the displacements. In the same way, the comparison of the results obtained by applying the direct method of stiffness manually with the previously mentioned software was carried out.