Stochastic seismic response of multiply‐supported secondary systems in flexible‐base structures

Dey, Aparna; Gupta, Vinay K.

doi:10.1002/(sici)1096-9845(199904)28:4<351::aid-eqe821>3.3.co;2-j

Cited by 2 publications

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“…In the case of multiply supported (generalized) secondary systems (GSS), the reported research is significantly less extensive , the emphasis being on decoupling the equations of motion of the supporting structure from those of the secondary system.…”

Section: Seismic Demands For Design Of Nonstructural Componentsmentioning

confidence: 99%

Seismic response of nonstructural components attached on multistorey buildings

Pardalopoulos

Pantazopoulou

2014

Earthq Engng Struct Dyn

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SUMMARYThe maintenance of integrity and functionality of nonstructural components during earthquake excitations is of paramount importance since mechanical failure of those systems can have dramatic consequences in terms of property damage and life safety of the buildings' occupants. This paper explores the dynamic response of nonstructural elements attached on multistory buildings with well-established floor diaphragm action. Depending on the type of support conditions, seismic response of nonstructural components may be controlled either by acceleration or displacement: Nonstructural components that are subjected to uniform support excitation are controlled primarily by the absolute spectral acceleration developing at their point of attachment on the supporting building. On the contrary, seismic response of multiply supported nonstructural components depends primarily on the relative displacements between successive support points that are imposed by the supporting building during lateral sway. These findings are illustrated from the analytical formulation and its solution through time history analysis of the governing dynamic equation of motion of the primary and secondary components of a system modeled using finite elements. The model encompasses the assembly of a multistory building along with a multiply supported gas pipeline network. It is shown that the dependence of the seismic response of nonstructural components may be linked to the deformed shape of the supporting building at the state of its maximum lateral roof displacement, thereby enabling the definition of design procedures for these systems.

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Section: Seismic Demands For Design Of Nonstructural Componentsmentioning

confidence: 99%

Seismic response of nonstructural components attached on multistorey buildings

Pardalopoulos

Pantazopoulou

2014

Earthq Engng Struct Dyn

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“…[18] also studied the seismic analysis of the auxiliary system for bi-directional ground motion when the auxiliary system is fitted over a torsionally coupled non-linear PS. [19] analyze the stochastic seismic analysis of multi supported SS in the flexible base structure with an arbitrary vibration methodology. [20] doing the dynamic analysis and developed two strategies to process the inelastic composite PS system response through deteriorated substructure mode in the un-damped substructure modes.…”

Section: Introductionmentioning

confidence: 99%

3D-Seismic Response Analysis of the Secondary Piping System in Building Under Bi-Directional Earthquake

et al. 2022

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The secondary piping systems running along the height of buildings are subjected to significant stresses and accelerations due to the earthquake. Extensive research on the seismic response of primary and secondary systems has been carried out in the past. State of the art review papers on the subjects summarizes those researches. Although the response of the secondary piping system running along with the height of the primary structure like the building has been studied before, the stresses and accelerations developed in the piping system developed due to the bi-directional earthquake are not widely studied. In this paper, a six storied building with a secondary system taken as a pipe running from 1st to 6th story on one side of the building is taken as an illustrative example. A 3-D model of the primary and secondary system is analyzed for bi-directional earthquakes. Considering the full interaction between the primary and secondary structures, the non- linear time history analysis is carried out in SAP 2000 to obtain different response quantities of interest for a PGA level 0.3g with the major to minor ground motion ratio taken as 1:2/3. Response quantities of interest include the maximum accelerations, maximum displacements, and maximum stresses developed at critical sections of the pipe. Also, the floor response spectra are obtained. Results of the numerical study indicate that significant accelerations and stresses are induced in the pipe for a PGA level of 0.3g; the absolute accelerations at the pipe supports vary significantly leading to the generation of large stresses in the pipe.

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Stochastic seismic response of multiply‐supported secondary systems in flexible‐base structures

Cited by 2 publications

References 0 publications

Seismic response of nonstructural components attached on multistorey buildings

Seismic response of nonstructural components attached on multistorey buildings

3D-Seismic Response Analysis of the Secondary Piping System in Building Under Bi-Directional Earthquake

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