SEISMIC ANALYSIS OF SHELL STRUCTURES BY USING LINEAR STATIC AND DYNAMIC ANALYSIS
Ganguluri Manideepthi
PG Student, Department of Structural engineering & Vignan Deemed to be University, , IN
B.J.N Satish
PG Student, Department of Structural engineering & Vignan Deemed to be University, , IN
Jangam John Sudeepth
PG Student, Department of Structural engineering & Vignan Deemed to be University, , IN
Ravi Kumar Valeti
PG Student, Department of Structural engineering & Vignan Deemed to be University, , IN
Akkineni Lakshmi Sindhu
PG Student, Department of Structural engineering & Vignan Deemed to be University, , IN
Keywords: Shell, Response Spectrum analysis, Time periods, Mode shapes, Displacements, SAP2000 software.
Abstract
Shells are the one of the different type of structural element which is characterized by its shape. Shell is a three-dimensional solid body whose thickness is very small when compared with other dimensions. Shells are very strong and durable. In a realistic situation would probably still be standing when all conventional structures had failed. Shells are among the most efficient structures available, especially as roof structures. The superiority of shells as roofs is in their stiffness and strength that they stand without the support of columns. Shell is a roof structure so, that the main force that a dome bears is its own weight. These conditions make analysing the structural behaviour for predicting its respond imprecise for investigating the dynamic response of shells to applied loads. The dynamic forces acting on a concrete shells generally do not control the design, however, in earthquake prone areas the most
disastrous force that can be applied on a shell is sesimic load. Many researchers have studied the vibration characteristics of shells and formulated three dimensional analytical solutions. This paper presents five different types of shell structures were designed such as spherical dome, parabolic shell, hyperbolic paraboloid, cylindrical shell, multi-bay shell. Study of dynamic behaviour of reinforced concrete shells and the dynamic characteristics such as Base shear, displacements, mode shapes and time periods.
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