Abstract The seismic vulnerability of bridges may be reduced by the application Geotechnical Seismic Isolation (GSI) below foundations columns and abutments. However, role GSI on response has been limitedly examined in literature. Therefore, this research conducted to study effect applying address aforementioned gap knowledge. Advanced nonlinear dynamic three-dimensional finite element analyses...

Based on the shaking table test, seismic responses of main parameters two-span skew bridge were gutted. The finite element model test was established by analysis software OpenSEES. An improved single beam quality distribution proposed. stiffness end twice that actual beam, rather than rigid arm. At same time, mass distributed in way shares half and beams at both ends share half, taking into acc...

El Sistema de Computación “CEINCI LAB” lo componen programas y funciones orientadas a resolver problemas Ingeniería Sísmica-Estructural. En el año 1993 se desarrollaron las iniciales en Fortran, posteriormente utilizó Visual Basic la actualidad ejecutan mediante MatLab u Octave. Esta herramienta académica facilita proceso enseñanza genera un aprendizaje significativo los estudiantes. Por esta r...

The prediction of responses the reinforced concrete shear walls subject to strong ground motions is critical in designing, assessing, and deciding recovery strategies. This study evaluates ability regression models a hybrid technique (ANN-SA model), artificial neural network (ANN), Simulated Annealing (SA), predict motions. To this end, four buildings (15, 20, 25, 30-story) with were analyzed O...

A framework for the analysis of three-dimensional reinforced concrete frame structures, capable reproducing general failure modes, is presented. force-based model which guarantees equilibrium between nodal and sectional forces enhanced by means a cross-sectional model. It capturing complex coupling all internal forces. Consequently, different modes can be reproduced such as shear, torsional, fl...

Reinforced concrete thin walls buildings have become one of the most common alternatives for housing construction in Colombia. However, some studies on this system reported that a limited deformation capacity and may suffer brittle failures. In paper, numerical model developed OpenSees was used to represent behavior slender reinforced walls. The evaluated fitted with experimental response two r...

A unified and comprehensive treatment of shape sensitivity that includes variations in the nodal coordinates, member cross-section properties, and global shape parameters of inelastic frame structures is presented. A novelty is the consideration of geometric uncertainty in both the displacementand force-based finite element formulations of nonlinear beam-column behavior. The shape sensitivity e...

Addition of steel fibers to high strength concrete (HSC) improves its post-peak behavior and energy absorbing capability, which can be described well in term of toughness. This paper attempts to obtain both analytically and experimentally the efficiency of steel fibers in HSC columns with hybrid confinement of transverse reinforcement and steel fibers. Toughness ratio (TR) to quantify the confi...

In this paper a novel dynamical model will be developed for an overhead crane with transverse vibrations of flexible cable while considering large angle of the cable/payload swing. The major problem addressed is expressing the dynamic interaction between the cables and other elements in the crane system which demands investigation into boundary induced cable vibrations and large swing angle. Th...