On the Design of Viscous Dampers for the Rehabilitation of Plan-Asymmetric Buildings

Abstract

In this article, one of the procedures proposed in literature for the design of viscous dampers to be inserted in existing buildings is examined and extended to 3D eccentric buildings. The proposed procedure has been verified through a case study characterized by a six-story RC building. Both plan-symmetric and plan-asymmetric configurations have been considered for comparisons. The effect of considering the plan-asymmetry in the design has been studied. Moreover, also the importance of considering the higher modes has been investigated. The effectiveness of the design procedure has been then evaluated through the comparison with nonlinear dynamic analyses.

A two‐step direct method for estimating the seismic response of nonlinear structures equipped with nonlinear viscous dampers

“…However, in some cases, the dissipation provided by the hysteresis of the structure has to be considered because the use of dampers does not always ensure that the elastic limit is not exceeded [29]. This could be the case, for example, of the retrofit of existing buildings [30,31]. This paper proposes a direct assessment method (DAM) aimed at estimating the seismic response of nonlinear structures equipped with nonlinear viscous dampers [32,33].…”

Effectiveness of different distributions of viscous damping coefficients for the seismic retrofit of regular and irregular RC frames

“…The retrofit objective of satisfying the seismic requirements for new structures is often economically prohibitive and extremely difficult to achieve, especially for strategic buildings, where the seismic performance must be higher than for ordinary buildings. In these cases, the employment of an innovative technique, such as dissipating energy by adding damping devices, may be very promising in terms of improving seismic performance [1][2][3][4][5][6][7][8][9][10][11][12]. By introducing supplemental dampers, it is possible to reduce the energy dissipated through the structural elements, and to restrict damage to them [13][14][15][16].…”

Research on Fluid Viscous Damper Parameters of Cable-Stayed Bridge in Northwest China

“…The friction between the molecules and that between the surface of the cylinder and the fluid generates heat so that the seismic energy can be converted into heat energy and the damping effect can be realized [23,24]. FVD are common shock absorbers in bridge engineering, and the fundamental principle of damping property is [25][26][27][28] …”

“…At the same time, the dead load effect on the structural stiffness is taken into consideration. The masterslave relation is used to simulate the girder joints, the lifting points of the stay cables, and the anchorage zone of the stay cables [18,19]. The 6 × 6 coupled spring is adopted to simulate the mutual effect between the pile and soil in both pile foundations of the towers and the piers.…”