Seismic response of secondary systems

Chen, Yongqi; Soong, T. T.

doi:10.1016/0141-0296(88)90043-0

Cited by 111 publications

(43 citation statements)

References 68 publications

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“…As emphasized by Reggio and De Angelis (2014) and Chen and Soong (1988), the relevance of the dynamic interaction between a primary subsystem and a secondary subsystem could be evaluated by comparing dynamic analyses carried out through a decoupled and coupled approach. For the decoupled analysis, the selected ground motion input is the frequent artificial accelerogram with 550-mm/s 2 PGA, exciting only in the y-direction.…”

Section: Discussion and Verification Of The Optimized Parametersmentioning

confidence: 99%

Seismic behavior of RC structures with absence of floor slab constraints and large mass turbine as a non-conventional TMD: a case study

Ding

Tao

Zhou

et al. 2015

Bull Earthquake Eng

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This paper presents a case study on the influence of absence of floor slab constraints and large mass turbine as a non-conventional tuned mass damper (TMD) on the seismic behavior of the structure and members. The investigated structural system is a reinforced concrete (RC) shear wall-frame power plant structure with large slab openings and a large mass turbine. In RC structures, the existence of floor slabs can usually provide strong constraints on beams so as to greatly increase their bearing capacity. However, due to some special functional demands, large area of slabs may have to be removed so that some floor beams will lose the constraints provided by slabs. In such cases, beams could be subjected to complex internal forces and develop unexpected failure modes under earthquake actions. Nonlinear time history analyses are conducted by using the self-developed program COMPONA-MARC Version 1.0. The numerical model employs fiber beam-column elements with distributed plasticity approach which can elaborately simulate the complex seismic behavior of structural members without slab constraints including the significant transverse vibration damage mechanism. For the seismic effectiveness of the turbine as a TMD with large mass ratio, the optimized parameters are discussed and verified by extensive numerical examples under a wide selection of ground acceleration time histories. The acceleration responses of the turbine are analyzed and found to satisfy the corresponding requirements. The dynamic interaction between the structure and turbine is evaluated and the effects of mass ratio and multiple supporting springs on the dynamic response of the turbine are investigated. It is found that the acceleration response of the turbine modeled with multiple supporting springs is evidently larger than that modeled with a single degree-of-freedom system, and the floor response spectrum decreases significantly with the increase of the mass ratio.

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Section: Discussion and Verification Of The Optimized Parametersmentioning

confidence: 99%

Seismic behavior of RC structures with absence of floor slab constraints and large mass turbine as a non-conventional TMD: a case study

Ding

Tao

Zhou

et al. 2015

Bull Earthquake Eng

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“…Several studies have investigated the behavior and the sensitivity of subsystems during a seismic event (see Lin and Mahin 1985;Chen and Soong 1988;Kingston 2004;Chaudhuri and Villaverde 2008). These studies propose some guidelines based on parametric studies.…”

Section: Introductionmentioning

confidence: 99%

Seismic response of nonstructural components in case of nonlinear structures based on floor response spectra method

Oropeza

Favez

Lestuzzi

2009

Bull Earthquake Eng

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This paper investigates the response of nonstructural components in the presence of nonlinear behavior of the primary structure using floor response spectra method (FRS). The effect of several parameters such as initial natural frequency of the primary structure, natural frequency of the nonstructural components (subsystem), strength reduction factor and hysteretic model have been studied. A database of 164 registered ground acceleration time histories from the European Strong-Motion Database is used. Results are presented in terms of amplification factor and resonance factor. Amplification factor quantifies the effect of inelastic deformations of the primary structure on subsystem response. Resonance factor quantifies the variation of the subsystem response considering the primary structure acceleration. Obtained results differed from precedent studies, particularly for higher primary structure periods. Values of amplification factor are improved. Obtained results of resonance factor highlight an underestimation of peak values according to current design codes such as Eurocode 8. Therefore a new formulation is proposed.

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“…The seismic analysis of the attachments can be performed by means of different strategies (Villaverde 1997;Chen and Soong 1988) among which linear and nonlinear analyses can be included: the PS system can be analyzed as a global system with an evident computational effort.…”

Section: Introductionmentioning

confidence: 99%

Secondary Structures and Attachments Under Seismic Actions: Modeling and Analysis

Nisticò

Proia

2014

Encyclopedia of Earthquake Engineering

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Seismic response of secondary systems

Cited by 111 publications

References 68 publications

Seismic behavior of RC structures with absence of floor slab constraints and large mass turbine as a non-conventional TMD: a case study

Seismic behavior of RC structures with absence of floor slab constraints and large mass turbine as a non-conventional TMD: a case study

Seismic response of nonstructural components in case of nonlinear structures based on floor response spectra method

Secondary Structures and Attachments Under Seismic Actions: Modeling and Analysis

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