Experimental Seismic Study of Adjacent Buildings with Fluid Dampers

Yang, Zi; Xu, You Lin; Lü, Xilin

doi:10.1061/(asce)0733-9445(2003)129:2(197)

Cited by 74 publications

(43 citation statements)

References 10 publications

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“…Examples of practical interest can be found, for instance, in seismic protection of multibuilding systems [Yang et al (2003), Matsagar and Jangid (2005) Li et al (2012b)]. Consequently, further research effort needs to be aimed at exploring additional applications of the proposed methodology.…”

Section: Discussionmentioning

confidence: 99%

ptimal passive-damping design using a decentralized velocity-feedback H-Infinity approach

Quiñonero¹,

Massegú²,

Rossell³

et al. 2012

MIC

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In this work, a new strategy to design passive energy dissipation systems for vibration control of large structures is presented. The method is based on the equivalence between passive damping systems and fully decentralized static velocity-feedback controllers. This equivalence allows to take advantage of recent developments in static output-feedback control design to formulate the passive-damping design as a single optimization problem with Linear Matrix Inequality constraints. To illustrate the application of the proposed methodology, a passive damping system is designed for the seismic protection of a five-story building with excellent results.

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Section: Discussionmentioning

confidence: 99%

ptimal passive-damping design using a decentralized velocity-feedback H-Infinity approach

Quiñonero¹,

Massegú²,

Rossell³

et al. 2012

MIC

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“…In fact, most of the studies in the literature focus on the most recurrent configuration involving the coupling of the structure to be protected with an external one by means of dampers placed horizontally at the storey level (Figure 1(a)). The external structure can be stiff, or it can be flexible, as in the case of adjacent buildings with different dynamic properties [14][15][16][17][18]. The dampers are activated by the absolute floor displacements in the first case and by the relative floor motion of the systems in the latter one.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems

Gioiella

Tubaldi

Gara

et al. 2018

Shock and Vibration

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This paper deals with the seismic retrofit of existing frames by means of external passive dissipative systems. Available in different configurations, these systems allow high flexibility in controlling the structural behaviour and are characterized by some feasibility advantages with respect to dissipative devices installed within existing frames. In particular, this study analyzes and compares the performances of two external solutions using linear viscous dampers. The first is based on the coupling of the building with an external fixed-based steel braced frame by means of dampers placed horizontally at the floor levels. The second is an innovative one, based on coupling the building with a "dissipative tower," which is a steel braced frame hinged at the foundation level, and activating the dampers through its rocking motion. The effectiveness of the two solutions is evaluated and compared by considering a benchmark existing reinforced concrete building, employing a stochastic dynamic approach, under the assumption of linear elastic behaviour for the seismic performance evaluation. This allows efficiently estimating the statistics of many response parameters of interest for the performance assessment and thus carrying out extensive parametric analyses for different properties of the external systems. The study results provide useful information regarding the design and the relative efficiency of the proposed retrofit solutions.

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“…A variety of damping devices, such as viscous dampers [1][2][3][4], friction dampers [5][6][7], hysteretic dampers [8][9][10][11] and viscoelastic dampers [12][13][14][15][16][17], interconnecting adjacent buildings have been widely studied to prevent the pounding for engineering applications. Among these types of damping devices, the viscoelastic dampers can be used to dissipate energy at all deformation levels.…”

Section: Introductionmentioning

confidence: 99%

Optimal Vibration Control of Adjacent Building Structures Interconnected by Viscoelastic Dampers

Liu¹,

Wang²,

Chiu³

2017

JCEA

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Abstract:The objective of this paper is to investigate the dynamic characteristics of two adjacent building structures interconnected by viscoelastic dampers under seismic excitations. The computational procedure for an analytical model including the system model formulation, complex modal analysis and seismic time history analysis is presented for this purpose. A numerical example is also provided to illustrate the analytical model. The complex modal analysis is conducted to determine the optimal damping ratio, the optimal damper stiffness and the optimal damper damping of the viscoelastic dampers for each mode of the system. For the damper stiffness and damping with optimal values, the responses can be categorized into underdamped and critically damped vibrations. Furthermore, compared to the viscous dampers with only the energy dissipation mechanism, the viscoelastic dampers with both the energy dissipation and redistribution mechanisms are more effective for increasing the damping ratio of the system. The seismic time history analysis is conducted to assess the effectiveness of the viscoelastic dampers for vibration control. Based on the optimal damping ratio, the optimal damper stiffness, the optimal damper damping of the viscoelastic dampers for a certain mode of the system, and the viscoelastic dampers can be used to effectively suppress the root-mean-square responses as well as the peak responses of the two adjacent buildings.

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Experimental Seismic Study of Adjacent Buildings with Fluid Dampers

Cited by 74 publications

References 10 publications

ptimal passive-damping design using a decentralized velocity-feedback H-Infinity approach

ptimal passive-damping design using a decentralized velocity-feedback H-Infinity approach

Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems

Optimal Vibration Control of Adjacent Building Structures Interconnected by Viscoelastic Dampers

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