Dynamic response of damper-connected adjacent buildings under earthquake excitation

Xu, You Lin; He, Qun; Ko, J. M.

doi:10.1016/s0141-0296(97)00154-5

Cited by 198 publications

(110 citation statements)

References 6 publications

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“…Such observations triggered the interest of the research community to study the response of seismically excited adjacent buildings interacting and pounding due to insufficient clearance. Specifically, following early works on the topic (Anagnostopoulos 1988, Wolf & Skrikerud 1980, considerable research work has been devoted in recent years to develop practically useful analytical and computational models for the reliable representation of pounding forces (Anagnostopoulos 2004, Jankowski 2005, Muthukumar & DesRoches 2006, Dimitrakopoulos et al 2009, Ye et al2009, Cole et al 2011 to study the effects of these forces to the dynamic response and to the structural integrity of various types of colliding structures (Mouzakis & Papadrakakis 2004, Jankowski 2008, 2009, Mahmoud & Jankowski 2010, Polycarpou & Komodromos 2010, Giaralis & Spanos 2011, as well as to propose strategies to mitigate these effects (Spiliopoulos and Anagnostopoulos 1996,Xu et al 1999, Anagnostopoulos & Karamateas 2008, Lopez-Garcia & Soong, 2009, Polycarpou & Komodromos 2011.…”

Section: Introductionmentioning

confidence: 99%

Influence of bi-directional seismic pounding on the inelastic demand distribution of three adjacent multi-storey R/C buildings

Skrekas¹,

Sextos²,

Giaralis³

2014

Earthquakes and Structures

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Citation: Skrekas, P., Sextos, A. and Giaralis, A. (2014). Influence of bi-directional seismic pounding on the inelastic demand distribution of three adjacent multi-storey R/C buildings. Earthquakes and Structures, 6(1), pp. 71-87. doi: 10.12989/eas.2014.6.1.071 This is the unspecified version of the paper.This version of the publication may differ from the final published version. Abstract. Interaction between closely-spaced buildings subject to earthquake induced strong ground motions, termed in the literature as "seismic pounding", occurs commonly during major seismic events in contemporary congested urban environments. This influence is not taken into account by current codes of practice and is rarely considered in practice at the design stage of new buildings constructed "in contact" with existing ones. Thus far, limited research work has been devoted to quantify the influence of slab-to-slab pounding on the inelastic seismic demands at critical locations of structural members in adjacent structures that are not aligned in series. In this respect, this paper considers a typical case study of a "new" reinforced concrete (R/C) EC8-compliant, torsionally sensitive, 7-story corner building constructed within a block, in bi-lateral contact with two existing R/C 5-story structures with same height floors. A non-linear local plasticity numerical model is developed and a series of non-linear time-history analyses is undertaken considering the corner building "in isolation" from the existing ones (no-pounding case), and in combination with the existing ones (pounding case). Numerical results are reported in terms of averages of ratios of peak inelastic rotation demands at all structural elements (beams, columns, shear walls) at each storey. It is shown that seismic pounding reduces on average the inelastic demands of the structural members at the lower floors of the 7-story building. However, the discrepancy in structural response of the entire block due to torsioninduced, bi-directionally seismic pounding is substantial as a result of the complex nonlinear dynamics of the coupled building block system. Permanent

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Section: Introductionmentioning

confidence: 99%

Influence of bi-directional seismic pounding on the inelastic demand distribution of three adjacent multi-storey R/C buildings

Skrekas¹,

Sextos²,

Giaralis³

2014

Earthquakes and Structures

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“…In order to minimize the cost of dampers, the response of two adjacent buildings by taking only three dampers (almost 50% of the total) with examining the obtained optimized properties damper by Xu et al (1999) studied at the site of selected floors has been studied. For damperssites, the floors with maximum partial displacement have been selected.…”

Section: Resultsmentioning

confidence: 99%

Determining the Best Insertion Site of Fluid Viscous Dampers to Optimize and Reduce Incurredcosts in Adjacent Buildings

Solmazyaghobzadeh¹

2016

MAS

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In the past decade, researchers developed the idea of connecting buildings with intelligent activated, semi-active and inactivated damper systemsreduce adjacent buildings response to wind and earthquake. One of the most important damper devices in non-active control is fluid viscous damper.Fluid dampers due to viscous fluidsshow high resistance. High resistance of viscous fluidsagainst the flow is the basicfunctionof fluid viscous dampers. Deformation speed a fluid viscous damper is proportional to the acted forces. Therefore the aim of this paper is to determine the insertion site of fluid viscous dampersto optimize and reduce the consuming costs in adjacent buildings. For this purpose, four different models of connected adjacent buildings with common and different shear stiffness in the software SAP 2000 has been modeled. This study shows that it is not necessarytwo adjacent buildings connected by a damper on all floors, but the less damper in appropriate selected locations can help reduce the earthquake response. And by placing the fluid viscous dampers in selected certainfloors provides more useful structural system for reducing the effects of earthquakes.

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“…Damping force F D which equals C V c exp . Restoring force FE According to [17], the damping coefficient was determined to be around 1x10 6 N. s m with a small variation for adjacent buildings in their studies. Therefore, the damping coefficients in the five main examples are determined as c d = 0.25x10 6 N. s m and c d = 0.85x10 6 N. s m respectively.…”

Section: Viscous Damper Representationmentioning

confidence: 99%

Optimization of Viscous Dampers with the Influence of Soil Structure Interaction on Response of Two Adjacent 3-D Buildings under seismic load

Farghaly¹

2014

IOSRJEN

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-3D two adjacent buildings with different heights founded in different kinds of soil connected with viscous dampers, with especial arrangement in plane, were investigated. The soil for three different kinds of soil (stiff, medium and soft) were model as 3D Winkler model to give the realistic behavior of adjacent building connected with viscous dampers. The investigation is carried out to study the structural responses of two adjacent buildings connected with viscous dampers under various earthquake excitations taking in the account the effect of different kinds of soil beneath the buildings. The introduction of soil-structure interaction requires a mathematical model for the foundation and surrounding soil, use SAP2000n to model the system. A range of soil properties and soil damping characteristics are chosen which gives broad picture of connected structure system behavior on influence of soil-structure interaction. Its conclusion that the response of connected structures system founded on soft soil are more critical than those founded on stiff soil. The behavior of connected structures is different from those with fixed base bigger by nearly 20%, and the efficiency of viscous dampers connecting the two adjacent buildings is reduced by nearly 25% less than those founded on stiff soil.

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Dynamic response of damper-connected adjacent buildings under earthquake excitation

Cited by 198 publications

References 6 publications

Influence of bi-directional seismic pounding on the inelastic demand distribution of three adjacent multi-storey R/C buildings

Influence of bi-directional seismic pounding on the inelastic demand distribution of three adjacent multi-storey R/C buildings

Determining the Best Insertion Site of Fluid Viscous Dampers to Optimize and Reduce Incurredcosts in Adjacent Buildings

Optimization of Viscous Dampers with the Influence of Soil Structure Interaction on Response of Two Adjacent 3-D Buildings under seismic load

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