Interacción suelo estructura, para edificaciones de muros de concreto, en suelos blandos
Ballen Díaz, Carlos Alfonso | 2015
The present study aims to investigate the dynamic behavior of the soft soil of the savanna of Bogotá and its interaction with a prototype structure, reinforced concrete, five floors and attic, which has a system consisting earthquake resistant concrete walls f 'c = 21MPa. To perform this analysis the problem was divided into two parts.
Geological and geotechnical conditions of savanna soils are established in the first part, and studied particularly 180m poll conducted in CBOG1 station (located at the seat of Weber County). Because it is known in advance the spectrum of accelerations, velocities and displacements in the rock and the surface produced by the earthquake Quetame, occurred in 2008, were to verify, using as input the registration rock, Quetame earthquake, and characterizing the soil, by testing geophysical prospecting type ReMi, Down Hole, Bender Elements and Cyclic Triaxial. If dynamic soil properties, these trials found and applied to the curves of G / Gmax and damping "D" processed with the EERA program coincide with those found in the CBOG1 station with surface recordings in the East-West, these curves imply that adequately represent the floor of the savanna.
In the second part, the aforementioned building is used as if it had been built in each of the 27 stations of the RAB, which recorded the quake Quetame, taking as input, and the record size for each of stations. The ETABS program is chosen for analysis, using the "Response Spectrum Functions" and "Time History Functions", in order to compare them. Collecting information for two points of the structure and each of the buildings located in the stations were selected. With these results normalized horizontal force curves, normalized stiffness, shear Vs. Time and spectral acceleration, velocity and displacement for East-West and North-South; both input and output directions are plotted. Finally the spectra obtained are compared with the spectra of acceleration, velocity and displacement MZSB, 2010 Decree 523.