Non-Linear Time History Analysis for the Performance Based Design of Shanghai Tower

Poon, Dennis C. K.; Hsiao, Ling-En; Zhu, Yang; Joseph, Leonard M.; Zuo, Steve; Fu, G. Y.; Ihtiyar, Onur

doi:10.1061/41171(401)47

Cited by 12 publications

(8 citation statements)

References 1 publication

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“…The SEDO brace is modeled using the PERFORM-3D software, which is a widely used computer program for the nonlinear analysis of buildings under seismic actions. 16,31,32 The fiber model is used for the brace of SEDO, and the material property is set to the predefined buckling-material properties in PERFORM-3D ( Figure 8) with additional strength deterioration under tension, 33 which leads to a strength degradation in both tension and compression ( Figure 8). In addition, the parameters of the hysteresis curve are calibrated with the experimental results in Table 2.…”

Section: Numerical Modelingmentioning

confidence: 99%

Development of a novel sacrificial‐energy dissipation outrigger system for tall buildings

Liao

Cui

et al. 2019

Earthq Engng Struct Dyn

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Summary The frame‐core tube‐outrigger structural system is widely used in tall buildings, in which outriggers coordinate the deformation between the core tube and the moment frame, leading to a larger structural lateral stiffness. Existing studies indicate that outriggers can be designed as “fuses” of tall buildings through dissipating seismic energy after yielding, to protect the main structure. To date, both conventional and buckling‐restrained brace (BRB) outriggers have been applied in practice. Subjected to the maximum considered earthquake (MCE), the hardening effect of BRB outriggers increases the damage of other structural components. Meanwhile, conventional outriggers are difficult to repair, owing to the local buckling‐induced severe deterioration and damage. To overcome these problems, this study proposes a novel sacrificial‐energy dissipation outrigger (SEDO) to improve the seismic resilience of tall buildings. The chords of SEDO are made of high‐strength steel and remain elastic. The inclined braces of the SEDO are composed of a sacrificial part and an energy‐dissipating part. Therefore, the SEDO remains elastic under design‐based earthquakes (DBEs) and dissipates inelastic energy under MCEs. Moreover, the detailing of this novel SEDO is proposed on the basis of experimental studies. The optimal strength ratio between the sacrificial part and the energy‐dissipating part is determined in the range of 6:4 to 4:6 on the basis of nonlinear time history analyses (THAs) and parametric studies. Afterwards, the SEDOs are used in an actual tall building to verify their seismic performances through nonlinear THAs. The results indicate the proposed SEDO is able to protect other structural components and effectively improve the seismic resilience of tall buildings.

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Section: Numerical Modelingmentioning

confidence: 99%

Development of a novel sacrificial‐energy dissipation outrigger system for tall buildings

Liao

Cui

et al. 2019

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

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“…For example, based on the commercial FE code of MSC.Marc [12], Lu et al [1][2][3] proposed a numerical model integrating fiber-beam elements, multi-layer shell elements and an element deactivation technique for collapse simulation of super-tall buildings induced by extreme earthquakes. Poon et al [8] and Jiang et al [9] used Perform 3D, a commercial software package widely used for the design and nonlinear analysis of structures, to evaluate the performance of super-tall buildings in earthquakes. Among others, Lu et al [10] and Michaloudis et al [11] used ABAQUS and LS-DYNA for nonlinear analyses of seismic capacity of buildings aimed at providing a guideline for practical designs.…”

Section: Introductionmentioning

confidence: 99%

“…Research to date indicates that numerical simulation is effective for nonlinear seismic analyses of such buildings [1][2][3][4][5][6][7][8][9][10][11], but most of the simulations were performed using various commercial finite element (FE) software packages. For example, based on the commercial FE code of MSC.Marc [12], Lu et al [1][2][3] proposed a numerical model integrating fiber-beam elements, multi-layer shell elements and an element deactivation technique for collapse simulation of super-tall buildings induced by extreme earthquakes.…”

Section: Introductionmentioning

confidence: 99%

A shear wall element for nonlinear seismic analysis of super-tall buildings using OpenSees

Xie

Guan

et al. 2015

Finite Elements in Analysis and Design

266

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a b s t r a c tNumerical simulation has increasingly become an effective method and powerful tool for performancebased earthquake engineering research. Amongst the existing research efforts, most numerical analyses were conducted using general-purpose commercial software, which to some extent limits in-depth investigations on specific topics with complicated nature. In consequence, this work develops a new shear wall element model and associated material constitutive models based on the open source finite element (FE) code OpenSees, in order to perform nonlinear seismic analyses of high-rise RC frame-core tube structures. A series of shear walls, a 141.8-m frame-core tube building and a super-tall building (the Shanghai Tower, with a height of 632 m) are simulated. The rationality and reliability of the proposed element model and analysis method are validated through comparison with the available experimental data as well as the analytical results of a well validated commercial FE code. The research outcome will assist in providing a useful reference and an effective tool for further numerical analysis of the seismic behavior of tall and super-tall buildings.

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“…Li and Wu (2004), Poon et al (2011), Jiang et al(2014) and Lu et al (2011Lu et al ( , 2013Lu et al ( , 2014Lu et al ( , 2016 found that the outriggers could dissipate a great deal of the seismic energy after yielding, which would significantly influence the nonlinear seismic responses of buildings. Moehle (2015) indicated that the outriggers could be designed to yield and fail as "fuses" of the building, to dissipate the seismic energy and to protect the primary structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and finite element analysis of energy dissipating outriggers

Yang

et al. 2016

Advances in Structural Engineering

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The outriggers are widely adopted in tall and super-tall buildings. Their energy dissipation capacity can significantly influence the nonlinear seismic responses of the entire building structure. Based on an actual tall building project, the structural responses and energy dissipation capacities of three different outriggers were studied through experiments and finite element analyses. The test results of conventional outrigger specimen showed a steep deterioration after peak strength and an unfavorable energy dissipation capacity due to the global buckling of the braces and the local buckling of the chords after flexural yielding. By using buckling restrained braces (BRBs) and reduced beam sections (RBSs) in a new design of outriggers, the energy dissipation capacity and the ductility of outriggers were significantly improved. The yield and peak strengths were further improved with the use of high strength steel in chords on a third specimen. The finite element (FE) simulation of the three specimens indicated that the initial imperfection of the specimens shall be considered, and the developed FE models yielded good agreements with the test results. The outcome of this work can provide additional references for the application of outriggers in tall buildings.

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Non-Linear Time History Analysis for the Performance Based Design of Shanghai Tower

Cited by 12 publications

References 1 publication

Development of a novel sacrificial‐energy dissipation outrigger system for tall buildings

Development of a novel sacrificial‐energy dissipation outrigger system for tall buildings

A shear wall element for nonlinear seismic analysis of super-tall buildings using OpenSees

Experimental study and finite element analysis of energy dissipating outriggers

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