A response‐based decoupling criterion for multiply‐supported secondary systems

Chaudhuri, Shaon Ray; Gupta, Vinay K.

doi:10.1002/eqe.175

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…Similar to the method developed by Singh and Suarez [35], Chaudhuri and Gupta [48] developed a decoupled analysis for multiply-supported secondary structures using the perturbation technique. In their study, a new decoupling criterion was proposed, i.e.…”

Section: mentioning

confidence: 99%

Review of Approaches for Analysing Secondary Structures in Earthquakes and Evaluation of Floor Response Spectrum Approach

Lim

Chouw

2015

International Journal of Protective Structures

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Secondary structures are the members that are not part of the primary load-bearing components in a structural system. Although not intended to bear loads, secondary structures could be subjected to earthquake loading that may lead to failures. Damage to secondary structures could pose significant threats to life safety, prevent buildings from functioning and result in major economic loss. During past decades, a considerable amount of research efforts has been dedicated to develop rational approaches for seismic analysis of secondary structures. This paper aimed to assess these developments to today's knowledge as a reference for more accurate design. The review began with a brief description of the response characteristics of secondary structure under seismic loading, especially focusing on the factors that influence the responses. An appraisal of current numerical and experimental analysis methods of secondary structure is presented. Results from experimental work are used to validate the reliability of floor response spectrum and current design provision. Finally, an outlook of future possible research direction for more realistic design of secondary structures is given.

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Section: mentioning

confidence: 99%

Review of Approaches for Analysing Secondary Structures in Earthquakes and Evaluation of Floor Response Spectrum Approach

Lim

Chouw

2015

International Journal of Protective Structures

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“…[4] discussing, the refinery piping system.is analyzed by considering the interaction between pipes and racks. [5]An analysis of several supported SS based on the criterion of decoupling was discussed. [6] Another seismic investigation technique was developed by considering the correlation effect at different supports of multi supported piping system [7] Developed a decoupled stationary random vibration strategy based on the presumption of the Gaussian response procedure and Poisson barrier crossing.…”

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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“…Several methods have been developed to analyse the response of secondary systems; including multiply supported secondary systems as well as primary systems on exible base (see References [1][2][3][4] for an extensive literature review). From the standpoint of use in practice, methods that uncoupled the combined system and use the classical real mode frequencies and shapes of the primary…”

Section: Introductionmentioning

confidence: 99%

A method for the transfer function matrix of combined primary-secondary systems using classical modal decomposition

Heredia‐Zavoni

Pérez-Pérez

Barranco-Cicilia

2005

Earthquake Engng Struct. Dyn.

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SUMMARYAn iterative method is presented to compute the transfer function matrix of combined primary-secondary systems for seismic response analysis. It accounts for non-proportional damping and dynamic interaction of the combined system. A closed form sequence is developed for the iterative computation of the transfer function matrix. Such sequence is assembled using independently the real classical mode frequencies, shapes and damping ratios of the primary system, and the natural frequency and critical damping ratio of the SDOF secondary system. The necessary and su cient condition for convergence of the sequence is given in the paper. The method is illustrated through a couple of examples, including one of an appendix connected to a multi-storey shear building. Convergence of the method is thoroughly analysed and peak responses are obtained using a spectral density function approach.

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A response‐based decoupling criterion for multiply‐supported secondary systems

Cited by 6 publications

References 32 publications

Review of Approaches for Analysing Secondary Structures in Earthquakes and Evaluation of Floor Response Spectrum Approach

Review of Approaches for Analysing Secondary Structures in Earthquakes and Evaluation of Floor Response Spectrum Approach

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

A method for the transfer function matrix of combined primary-secondary systems using classical modal decomposition

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