Application of extended distinct element method with lattice model to collapse analysis of RC bridges

Sun, Lijun; Zhou, Chao; Dong, Qi; Liu, Fan

doi:10.1002/eqe.269

Cited by 16 publications

(8 citation statements)

References 8 publications

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“…A somewhat different formulation is introduced by Meguro and Tagel‐Din (2001), in which the building is modelled as an assembly of small elements connected by pairs of normal and shear springs. By using this model to simulate the response of a single‐column pier subjected to the 1995 Kobe Earthquake, Sun et al (2003) obtained a good correlation between results of the computer simulation and site investigation after the earthquake.…”

Section: Introductionmentioning

confidence: 99%

Basic concepts and performance measures in prediction of collapse of buildings under earthquake ground motions

Zareian

Krawinkler

Ibarra

et al. 2009

Structural Design Tall Build

110

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This paper summarizes collapse performance measures and the probabilistic basis for their development to assist in understanding of collapse behaviour of buildings and implementation of performance objectives in design and evaluation of buildings for collapse safety. Collapse in this context is defined as the loss of lateral load‐resisting capability of a building's structural system caused by ground shaking. Estimation of collapse performance requires the relation between a ground motion intensity measure (IM) and the probability of collapse, denoted as collapse fragility curve, and the relation between the same ground motion IM and the seismic hazard for the building, denoted as seismic hazard curve. Two methods for estimating the collapse fragility curve of a building are discussed: the EDP‐based approach and the IM‐based approach. In both approaches, collapse is associated with a scalar ground motion IM and is obtained by utilizing Incremental Dynamic Analysis. The collapse performance criteria presented in this paper are compared with the collapse performance criteria recommended in the SAC/Federal Emergency Management Agency guidelines. An eight‐storey moment‐resisting frame case study is used to compare the estimates of collapse performance of various approaches discussed in this paper. Copyright © 2009 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Basic concepts and performance measures in prediction of collapse of buildings under earthquake ground motions

Zareian

Krawinkler

Ibarra

et al. 2009

Structural Design Tall Build

110

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show abstract

“…The key issue to successfully simulate the earthquake-induced collapse is to properly simulate this phenomenon. At present, much research have been conducted on the collapse simulation using four types of methods: FE method (Lu et al, 2012(Lu et al, , 2013bBurton and Deierlein, 2013;Qian and Li, 2015;Lignos et al, 2011;Mahin et al, 2015), discrete element method (Sun et al, 2003;Gu et al, 2014), applied element method (Worakanchana and Meguro, 2008;Salem, 2011) and rigid body method (Mattern et al, 2007). In addition, Sivaselvan and Reinhorn (2006) also have developed a mixed Lagrangian approach to simulate the structural collapse.…”

Section: Collapse Analysis Methodsmentioning

confidence: 99%

Application of earthquake-induced collapse analysis in design optimization of a supertall building

Guan

Xie

2016

Struct Design Tall Spec Build

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Summary In recent years, a combination of rapid construction of supertall buildings and frequent occurrence of strong earthquakes worldwide demands a rational seismic design method for structures of this kind. Although earthquake‐induced collapse analysis is one of the most efficient methods to quantify the collapse resistance of buildings, little research has been reported on using the collapse analysis to evaluate the seismic safety of supertall buildings during the design stage. To optimize the design taking into account earthquake‐induced collapses, a real‐world supertall building with a height greater than 500 m is investigated in this work. Throughout its design procedure, earthquake‐induced collapse analyses are performed to optimize the design at three different levels (i.e. the structural system level, design parameter level and component level). At the structural system level, the influence of different lateral force‐resisting systems on the collapse resistance is discussed; at the design parameter level, the influence of minimum base shear force is discussed; and at the component level, the influence of high‐performance shear wall on the collapse resistance is studied. Based on these discussions, the optimal design scheme of the building is established to improve the seismic safety while maintaining the cost of construction. Given more and more supertall buildings will be constructed with new structural system and components, this work will provide important references for the seismic design of supertall buildings and the corresponding collapse resistance research in the future. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Detailed investigations of the seismic performance of the superstructure are available [8][9][10][11][12][13][14]. In these studies, several factors associated with poor structural design have been identiÿed.…”

Section: Introductionmentioning

confidence: 99%

The role of soil in the collapse of 18 piers of Hanshin Expressway in the Kobe earthquake

Mylonakis¹,

Syngros²,

Gazetas³

et al. 2006

Earthquake Engng Struct. Dyn.

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SUMMARYAn investigation is presented of the collapse of a 630 m segment (Fukae section) of the elevated Hanshin Expressway during the 1995 Kobe earthquake. The earthquake has, from a geotechnical viewpoint, been associated with extensive liquefactions, lateral soil spreading, and damage to waterfront structures. Evidence is presented that soil-structure interaction (SSI) in non-liqueÿed ground played a detrimental role in the seismic performance of this major structure. The bridge consisted of single circular concrete piers monolithically connected to a concrete deck, founded on groups of 17 piles in layers of loose to dense sands and moderate to sti clays. There were 18 spans in total, all of which su ered a spectacular pier failure and transverse overturning. Several factors associated with poor structural design have already been identiÿed. The scope of this work is to extend the previous studies by investigating the role of soil in the collapse. The following issues are examined: (1) seismological and geotechnical information pertaining to the site; (2) free-ÿeld soil response; (3) response of foundation-superstructure system; (4) evaluation of results against earlier studies that did not consider SSI. Results indicate that the role of soil in the collapse was multiple: First, it modiÿed the bedrock motion so that the frequency content of the resulting surface motion became disadvantageous for the particular structure. Second, the compliance of soil and foundation altered the vibrational characteristics of the bridge and moved it to a region of stronger response. Third, the compliance of the foundation increased the participation of the fundamental mode of the structure, inducing stronger response. It is shown that the increase in inelastic seismic demand in the piers may have exceeded 100% in comparison with piers ÿxed at the base. These conclusions contradict a widespread view of an always-beneÿcial role of seismic SSI.

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Application of extended distinct element method with lattice model to collapse analysis of RC bridges

Cited by 16 publications

References 8 publications

Basic concepts and performance measures in prediction of collapse of buildings under earthquake ground motions

Basic concepts and performance measures in prediction of collapse of buildings under earthquake ground motions

Application of earthquake-induced collapse analysis in design optimization of a supertall building

The role of soil in the collapse of 18 piers of Hanshin Expressway in the Kobe earthquake

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