Shaking‐table tests on reinforced concrete frames with different isolation systems

Dolce, Mauro; Cardone, Donatello; Ponzo, Felice Carlo

doi:10.1002/eqe.642

Cited by 104 publications

(57 citation statements)

References 12 publications

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“…4b. Referring to the typical values of design displacement (0.15-0.25 m) and period of vibration (2-3 s) of structures with SMAbased isolation systems (Dolce et al 2007), effective damping ratios ranging from 5% to approximately 27% ( ≈ 1.33 − 10) are found.…”

Section: Modeling Of Isolation Systemsmentioning

confidence: 99%

Direct displacement-based design of seismically isolated bridges

Cardone

Dolce

Palermo

2008

Bull Earthquake Eng

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A Displacement-Based Design (DBD) procedure for bridges equipped with different seismic Isolation Systems (IS's) is proposed. It has been derived from the Direct DBD method recently developed by Priestley and co-workers. The key aspect of the proposed procedure is the definition of a uniform target displacement of the deck, which is assigned by the designer to accomplish a given performance level, expressed through limit values of the maximum IS displacement and of the pier drift, respectively. The proposed design procedure has been developed for four different idealized force-displacement cyclic behaviours of IS's, which can be used to describe the response of a wide variety of IS's, including: (i) Lead-Rubber Bearings (LRB), (ii) High-Damping Rubber Bearings (HDRB), (iii) Friction Pendulum Bearings (FPB), (iv) Combinations of either Low-Damping Rubber Bearings (LDRB) or FPB and Viscous Dampers (VD), (v) Combinations of lubricated Flat Sliding Bearings (FSB) and LDRB, (vi) Combinations of FSB and Steel Yielding Devices (SYD), (vii) Combinations of FSB, Shape Memory Alloy (SMA)-based Re-centring Devices and VD.In the paper, the background and implementation of the design procedure is presented first, then some validation studies through nonlinear time-history analyses on different configurations of continuous deck and multi-span simply supported deck bridges are illustrated.

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Section: Modeling Of Isolation Systemsmentioning

confidence: 99%

Direct displacement-based design of seismically isolated bridges

Cardone

Dolce

Palermo

2008

Bull Earthquake Eng

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“…The combination of various dissipative mechanisms is not entirely novel and the concept has 19 been widely used for base-isolation systems, where supplementary dampers are used in parallel or in series with lead-rubber-bearing (LRB) isolators [45,46]. It has been shown that the use of 21 frictional dampers (e.g.…”

Section: Afs Systems-velocity-proportional and Displacement-proportiomentioning

confidence: 99%

Self‐centering structural systems with combination of hysteretic and viscous energy dissipations

Kam

Pampanin

Palermo

et al. 2010

Earthq Engng Struct Dyn

144

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SUMMARY 7This paper presents an innovative set of high-seismic-resistant structural systems termed Advanced FlagShaped (AFS) systems, where self-centering elements are combined in series and/or in parallel with 9 alternative forms of energy dissipation (yielding, friction and viscous damping). AFS systems is developed using the rationale of combining velocity-dependent with displacement-dependent energy dissipation for 11 self-centering systems, particularly to counteract near-fault earthquakes. Non-linear time-history analyses (NLTHA) on a set of four single-degree-of-freedom (SDOF) systems under a suite of 20 far-field and 13 20 near-fault ground motions are used to compare the seismic performance of AFS systems with the conventional systems. It is shown that AFS system with a combination of hysteretic and viscous energy 15 dissipations achieved greater performance in terms of the three performance indices. The use of friction slip in series of viscous energy dissipation is shown to limit the peak response acceleration and induced 17 base-shear. An extensive parametric analysis is carried out to investigate the influence of two design parameters, 1 and 2 on the response of SDOF AFS systems with initial periods ranging from 0.2 to 3.0 s 19 and with various strength levels when subjected to far-field and near-fault earthquakes. For the design of self-centering systems with combined hysteretic and viscous energy dissipation (AFS) systems, 1 is 21 recommended to be in the range of 0.8−1.6 while 2 to be between 0.25 and 0.75 to ensure sufficient self-centering and energy dissipation capacities, respectively.

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“…Shake table testing on energy dissipation systems includes isolation systems (Villaverde and Mosqueda, 1999;Samali et al, 2003;Dolce et al, 2007), semi-active and passive control of building structures (Sun et al, 2003;Dolce et al, 2005), and structures with viscous dampers Chang et al, 2008). Shake table testing of new types of structures and dams has also increased (Lu and Wu, 2000;Tinawi et al, 2000;Morin et al, 2002;Midorikawa et al, 2006;Wight et al, 2007;Ghaemmaghami and Ghaemian, 2008).…”

Section: Introductionmentioning

confidence: 96%

Shake table testing of a multi-tower connected hybrid structure

Zhou

Liu

et al. 2009

Earthq. Eng. Eng. Vib.

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Many single-tower reinforced concrete core wall-steel frame (RCC-SF) buildings have been built in China, but there are no buildings of different-height multi-tower hybrid system. A multi-tower RCC-SF tall building was thus studied because of its structural complexity and irregularity. First, a 1/15 scaled model structure was designed and tested on the shake table under minor, moderate, and major earthquake levels. Then, the dynamic responses of the model structure were interpreted to those of the prototype structure according to the similitude theory. Experimental results demonstrate that, despite the complexity of the structure, the lateral deformation bends as the "bending type" and the RC core walls contribute more than the steel frames to resist seismic loads. The maximum inter-story drift of the complex building under minor earthquakes is slightly beyond the elastic limitation specifi ed in the Chinese code, and meets code requirements under major earthquakes. From the test results some suggestions are provided that could contribute favorable effect on the seismic behavior and the displacement of the building.

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Shaking‐table tests on reinforced concrete frames with different isolation systems

Cited by 104 publications

References 12 publications

Direct displacement-based design of seismically isolated bridges

Direct displacement-based design of seismically isolated bridges

Self‐centering structural systems with combination of hysteretic and viscous energy dissipations

Shake table testing of a multi-tower connected hybrid structure

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