Estimation of a monolithic reinforced concrete overpass under the seismic effect

The given research is made as a seismic investigation of a monolithic (continuous) reinforced concrete overpass that is placed at 1083 km length of the M-39 highway that is passed the city of Samarkand. The main aim was to determine the structural performance of the overpass with the force of seismic loading, especially the influence of the tremor initiated by the forces on the foundation aspects of the overpass. The Midas Civil software package was used as the analysis tool and the Finite Element Method (FEM) was utilized under frame work of the linear spectral theory that is commonly employed in the analysis of seismic performance in building structures. The outcomes of the computational model indicate that the stress induced by the piles on the underlying soil is within recommended limits and this implies that there can be a stable interaction between the subgrade and the foundation in the case of seismic activities. In addition, analysis determined maximum bending moment near the pile head, which happens to be a critical point that usually has the maximum stress concentrations under lateral motion of the ground. This observation makes it necessary to strengthen the pile head area to make the structure secure. The findings of the study will provide significant information on seismic resistance of reinforced concrete bridges and will also serve the purpose of enhancing bridge design researches in regard to ensuring earthquake resistance in a bridge. The findings can also be used to have a wider implication of the developments of infrastructure in Uzbekistan concerning the introduction of the betterment of the safety and reliability of the highway overpasses in seismically active areas.