Parametric Analysis of Dynamic
Insulation in the Action of the Seismic
Movements of the Base-Insulated
Buildings
Polidor Bratu, Cristina Opri¸ tescu, Amalia ¸
Târdea, Ovidiu Voicu,
and Adrian Ciocodeiu
Abstract Buildings protection against seismic actions has, in recent times, led to an
intense emulation of innovative solutions for the insulation of the base. Thus, under
the new conditions of industrial development of antiseismic devices, at high and guaranteed performance level, dynamic isolation systems can be achieved resulting from
assembling in various configurations of simple devices. In this context, the designers
have, on the basis of the elastomeric antiseismic devices and the fluid dissipators,
constructed individual units in a modular system. These, by installation-mounting in
a sufficiently large number, are designed to provide the degree of dynamic isolation.
In the present paper we present a modular E/(E − V) type Zener model, consisting
of two elastomeric devices and a viscous damping fluidized dissipator. In order to
isolate a building, a sufficient number of modules must be used to define in a unitary
isolation system the base for a given building. Consequently, the paper will include
the dynamic model based on Zener schematization of the entire isolation system and
the specific parameters for calculating and evaluating the dynamic isolation level.
1 Introduction
The Zener complex rheologic model for the entire dynamic base insulation system
is equivalent to the assembly of the insulation modules, each of them being
made of a Zener rheological element, individualized by two parallel Hooke and
Maxwell connections. In this case, individual rigidity and amortizations, by properly
P. Bratu (B) · C. Opri¸ tescu · A. ¸
Târdea
ICECON SA, Bucharest, Romania
e-mail: icecon@icecon.ro
P. Bratu
Faculty of Engineering and Agronomy, “Dun˘ area de Jos” University of Gala¸ ti, Br˘ aila, Romania
O. Voicu · A. Ciocodeiu
Institute of Solid Mechanics, Romanian Academy, Bucharest, România
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_37
367
Insulation in the Action of the Seismic
Movements of the Base-Insulated
Buildings
Polidor Bratu, Cristina Opri¸ tescu, Amalia ¸
Târdea, Ovidiu Voicu,
and Adrian Ciocodeiu
Abstract Buildings protection against seismic actions has, in recent times, led to an
intense emulation of innovative solutions for the insulation of the base. Thus, under
the new conditions of industrial development of antiseismic devices, at high and guaranteed performance level, dynamic isolation systems can be achieved resulting from
assembling in various configurations of simple devices. In this context, the designers
have, on the basis of the elastomeric antiseismic devices and the fluid dissipators,
constructed individual units in a modular system. These, by installation-mounting in
a sufficiently large number, are designed to provide the degree of dynamic isolation.
In the present paper we present a modular E/(E − V) type Zener model, consisting
of two elastomeric devices and a viscous damping fluidized dissipator. In order to
isolate a building, a sufficient number of modules must be used to define in a unitary
isolation system the base for a given building. Consequently, the paper will include
the dynamic model based on Zener schematization of the entire isolation system and
the specific parameters for calculating and evaluating the dynamic isolation level.
1 Introduction
The Zener complex rheologic model for the entire dynamic base insulation system
is equivalent to the assembly of the insulation modules, each of them being
made of a Zener rheological element, individualized by two parallel Hooke and
Maxwell connections. In this case, individual rigidity and amortizations, by properly
P. Bratu (B) · C. Opri¸ tescu · A. ¸
Târdea
ICECON SA, Bucharest, Romania
e-mail: icecon@icecon.ro
P. Bratu
Faculty of Engineering and Agronomy, “Dun˘ area de Jos” University of Gala¸ ti, Br˘ aila, Romania
O. Voicu · A. Ciocodeiu
Institute of Solid Mechanics, Romanian Academy, Bucharest, România
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_37
367