SEISMIC VULNERABILITY STUDY OF SIMULATED UNDERGROUND STRUCTURES USING NUMERICAL APPROACH

Abstract

Solution to the complex phenomenon involving seismic action like accidental explosion could not
be easily and accurately achieved except through the use of numerical tool. Various accidental explosion
scenarios involving underground structures will require the interaction of quite a number of parameters such as
the structures, blast loads, blast duration, ground media, contact definition between the components under
consideration, material definition, boundary condition, etc. The numerical tool that is capable of analyzing all
these variables to yield the required observed parameters should be examined. This tool should be able to
incorporate one or more numerical methods of analysis in its program formulation with a view to simplifying
and widening research horizon as well as expanding the application of the numerical tool to other field of
research. In the case of modeled underground structures, the required observed parameters after analysis are
displacement, pressure, stress and strain which could still be subjected to further analysis.