Experimental tests and optimization rules for steel perforated shear panels

Matteis, Gianfranco De; Sarracco, Gianluca; Brando, Giuseppe

doi:10.1016/j.jcsr.2016.04.025

Cited by 46 publications

(23 citation statements)

References 26 publications

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“…Furthermore, the values of the equivalent damping coefficient ratio calculated as a function of the reduction factors α F , α d relevant to stress states and drifts, using formulas (14) and (20), respectively, resulted to be notably different. On the other hand, a slight difference was found between the corresponding energy dissipation measures, E D,αF and E D,αd .…”

Section: Discussionmentioning

confidence: 96%

“…Similarly to the case of poor strength of the members, the tentative design choice of the device is carried out by referring to the spring-damper with the nearest energy dissipation capacity to E D , estimated by (20), and a stroke not less than (ID max − ID e ).…”

Section: Structures With Excessive Interstorey Driftsmentioning

confidence: 99%

“…At the same time, new technologies, or improved versions of existing ones, have been implemented in the field of energy dissipation, capable of supplying supplemental damping and horizontal stiffness in different proportions, depending on the mechanical characteristics of dampers and their installation layout. Among the latest achievements in this field, systems incorporating updated models of metallic yielding devices like ADAS (Added Damping and Stiffness) and TADAS (Triangular Added Damping and Stiffness) elements [8][9][10][11][12], shear panels [13][14][15][16][17][18], shear panels with openings [19][20][21][22][23], or buckling-restrained braces [24][25][26][27], have been proposed, which typically provide significant contributions in terms of both properties. Viscous dampers can offer stiffening effects too, in addition to supplemental damping [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Energy-Based Design Criterion of Dissipative Bracing Systems for the Seismic Retrofit of Frame Structures

Terenzi

2018

Applied Sciences

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Featured Application: An energy-based sizing criterion is proposed to help designing dissipative bracing systems incorporating fluid viscous spring-dampers for the seismic retrofit of frame structures.Abstract: Direct sizing criteria represent useful tools in the design of dissipative bracing systems for the advanced seismic protection of existing frame structures, especially when incorporated dampers feature a markedly non-linear behaviour. An energy-based procedure is proposed herein to this aim, focusing attention on systems including fluid viscous devices. The procedure starts by assuming prefixed reduction factors of the most critical response parameters in current conditions, which are evaluated by means of a conventional elastic finite element analysis. Simple formulas relating the reduction factors to the equivalent viscous damping ratio of the dampers, ξ eq , are proposed. These formulas allow calculating the ξ eq values that guarantee the achievement of the target factors. Finally, the energy dissipation capacity of the devices is deduced from ξ eq , finalizing their sizing process. A detailed description of the procedure is presented in the article, by distinguishing the cases where the prevailing structural deficiencies are represented by poor strength of the constituting members, from the cases having excessive horizontal displacements. A demonstrative application to the retrofit design of a reinforced concrete gym building is then offered to explicate the steps of the sizing criterion in practice, as well as to evaluate the enhancement of the seismic response capacities generated by the installation of the dissipative system.

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Section: Discussionmentioning

confidence: 96%

Section: Structures With Excessive Interstorey Driftsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy-Based Design Criterion of Dissipative Bracing Systems for the Seismic Retrofit of Frame Structures

Terenzi

2018

Applied Sciences

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“…This improvement has little impact on the occupied spaces of the building. Recently, the performance of oil‐dampers and various dampers has made striking progress, as given in literature Use of external oil‐dampers …”

Section: Suitable Methods For Improving Seismic Performance Of An Exismentioning

confidence: 99%

“…Recently, the performance of oil-dampers and various dampers has made striking progress, as given in literature. [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] (4) Use of external oil-dampers This method, which is newly proposed in this paper, involves installing oil-dampers on the outside of an existing high-rise building (external oildampers) to mitigate the dynamic response produced by long-period ground motions. Little change to the facade of the existing high-rise building is required.…”

Section: Suitable Methods For Improving Seismic Performance Of An Exmentioning

confidence: 99%

Approximate method of estimating seismic performance of high‐rise buildings with oil‐dampers

Takabatake

Kitada

2018

Structural Design Tall Build

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Summary When subjected to long‐period ground motions, many existing high‐rise buildings constructed on plains with soft, deep sediment layers experience severe lateral deflection, caused by the resonance between the long‐period natural frequency of the building and the long‐period ground motions, even if they are far from the epicenter. This was the case for a number of buildings in Tokyo, Nagoya, and Osaka affected by the ground motions produced by the 2011 off the Pacific coast of Tohoku earthquake in Japan. Oil‐dampers are commonly used to improve the seismic performance of existing high‐rise buildings subjected to long‐period ground motion. This paper proposes a simple but accurate analytical method of predicting the seismic performance of high‐rise buildings retrofitted with oil‐dampers installed inside and/or outside of the frames. The method extends the authors' previous one‐dimensional theory to a more general method that is applicable to buildings with internal and external oil‐dampers installed in an arbitrary story. The accuracy of the proposed method is demonstrated through numerical calculations using a model of a high‐rise building with and without internal and external oil‐dampers. The proposed method is effective in the preliminary stages of improving the seismic performance of high‐rise buildings.

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Behaviour of Composite Plate Shear Walls with Variable Column Stiffness

Ćurković¹,

Skejić²,

Džeba³

et al. 2021

ce papers

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Steel plate shear walls (SPSW) have been increasingly applied in structures as a lateral load resisting system. SPSW systems utilize thin unstiffened plates as the infill between boundary members. Infill panels are very slender elements and buckle under low lateral loads due to which SPSW relies on the post‐critical tension field action of the infill panel. Such load transfer mechanism has two downsides: a) significant transverse forces are exerted on the boundary elements, particularly columns; b) load bearing capacity of the tension infill panel after yielding is lower than yielding of the panel in shear. In order to preclude these shortcomings relatively new vertical stabilization systems, termed composite plate shear walls (CPSW), were developed where stiffening of the infill panel using reinforced concrete plate was introduced. However, lack of research on CPSW systems led to creation of structural building codes which adopted requirements prescribed for SPSW. Experimental and numerical research has been conducted on CPSW. Three specimens, with varying column flexural stiffness, were tested. The obtained results show less prominent column “pull‐in” when compared to SPSW. The results were assessed comparing stiffness, resistance and ductility between the above‐mentioned systems. Finally, the experimental results were used to calibrate numerical models. Afterwards, the obtained numerical results served for more detailed comparison of behaviour between SPSW and CPSW.

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Experimental tests and optimization rules for steel perforated shear panels

Cited by 46 publications

References 26 publications

Energy-Based Design Criterion of Dissipative Bracing Systems for the Seismic Retrofit of Frame Structures

Energy-Based Design Criterion of Dissipative Bracing Systems for the Seismic Retrofit of Frame Structures

Approximate method of estimating seismic performance of high‐rise buildings with oil‐dampers

Behaviour of Composite Plate Shear Walls with Variable Column Stiffness

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