Structural frame systems that consists of concrete-encased-steel-embedded composite columns and reinforced concrete beams are typically used in mid-rise to tall buildings. In order understand their overall structural behavior, a total 12 models with high low ductility features were constructed analyzed using LS-DYNA software. Two these validated the results previously tested frames. The remaini...

This paper investigates the cyclic behaviour of steel-concrete encased composite columns. By investigating cover concrete and coefficient friction on (strength, ductility, stiffness, energy dissipation) columns subjected to combined axial load cyclically increasing lateral improve strength performance column. Eight were designed study effect, eleven other effect in dynamic load. Additionally, t...

Encased stone columns are vertical inclusions in soft soils formed by gravel wrapped usually with a geotextile. Their critical length is the one where further lengthening of column provides negligible improvement and it therefore not effective to build longer than it. This paper aims obtain common values using simplified two-dimensional axisymmetric full three-dimensional finite element analyse...

ABSTRACT: The design of steel and concrete composite columns in a fire situation is directly linked to the reduction strength stiffness, among other properties, which are manifested response rising temperatures. normative codes that deal with these elements under action consider thermal based on heating four faces column, an aspect does not cover most cases buildings due presence walls. In this...