Seismic fragility assessment of the Daikai subway station in layered soil

Zhong, Zilan; Shen, Yongjun; Zhao, Mi; Li, Liyun; Du, Xiuli; Hao, Hong

doi:10.1016/j.soildyn.2020.106044

Cited by 72 publications

(19 citation statements)

References 38 publications

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“…A nonlinear IDA was conducted by Zhong et al [85], aiming at assessing the vulnerability of subway stations. The Daikai subway station in Kobe, Japan (rectangular section 17 × 7.17 m, with central columns 0.4 × 1.0 m, spaced at 3.5 m), was used as case study.…”

Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

“…The latter comparisons revealed some reasonable differences. Zhong et al [89] developed a series of analytical fragility curves for the evaluation of a two-story, three span subway station in soft soil, using the framework presented in Zhong et al [85]. A 21.2 × 12.5 (m) rectangular embedded structure, with an overburden depth of 10 m, supported by a series of circular columns with a diameter d = 0.8 m, was used as a case study.…”

Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

“…In this context, three distinct soil deposits of increasing V s with depth were examined, with V s ranging between 120 and 600 m/s. A numerical model was established in FE code ABAQUS, with the soil and structure being modeled using nonlinear models, following Zhong et al [85]. The analysis was conducted for a suite of 21 far-field seismic records.…”

Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

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Developments in Seismic Vulnerability Assessment of Tunnels and Underground Structures

et al. 2022

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Underground structures are being constructed at an increasing rate in seismic prone areas, to facilitate the expanding needs of societies. Considering the vital role of this infrastructure in densely populated urban areas and interurban transportation networks, as well as the significant losses associated with potential seismically induced damage, its assessment against seismic hazard is of great importance for stakeholders, operators, and governmental bodies. This paper presents a state-of-the-art review of current developments in the assessment of seismic vulnerability of tunnels and underground structures. Methods for the development of fragility functions for the assessment of bored tunnels in rock or alluvial, and cut and cover tunnels and subways in alluvial, against ground seismic shaking and earthquake-induced ground failures are presented. Emphasis is placed on the estimation of the capacity of the examined structures, the selection of appropriate intensity measures to express seismic intensity, the development of rational probabilistic seismic demand models and the estimation of epistemic and aleatoric uncertainties, related to the seismic fragility of underground structures. Through the discussion, acknowledged gaps in the relevant literature are highlighted.

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Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

Section: Mountain Tunnels and Tunnels In Rockmentioning

confidence: 99%

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Developments in Seismic Vulnerability Assessment of Tunnels and Underground Structures

et al. 2022

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“…. By inputting the 10,000 sets of structural parameter combinations obtained in Section 3.3 to equation ( 7), obtain the probabilistic seismic demand model of the embankment [60][61][62], as shown in the following equation:…”

Section: Embankment Seismic Fragility Curvesmentioning

confidence: 99%

Embankment Seismic Fragility Assessment under the Near‐Fault Pulse‐like Ground Motions by Applying the Response Surface Method

Che

Yin

Zhou

et al. 2021

Shock and Vibration

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Uncertainties of the ground motions and structural parameters are the main factors that limit the accuracy of embankment seismic fragility assessment. In response to the uncertainties of the ground motions, artificial synthesizing method of the near-fault pulse-like ground motions was proposed, and 15 ground motions with the rupture fault distances ranging from 1 to 15 km were synthesized by taking the Chi-Chi earthquake in Taiwan, China, as an example. The Xi’an-Baoji expressway K1125 + 470 embankment was taken as the research object, and a total of 12 structural parameters were selected as the design variables, namely, the elastic modulus, bulk modulus, shear modulus, density, cohesion force, and internal friction angle of the embankment fill and soil foundation, respectively. In response to the uncertainties of these parameters, 3 principal components with large impacts on the embankment seismic fragility were extracted based on the principal component analysis. Mapping relationships among the principal components and embankment seismic damages were analyzed using the uniform design response surface method, and the seismic fragility assessment was carried out and the fragility curves were plotted. The research results are consistent with the actual embankment seismic damage conditions of the Chi-Chi earthquake, indicating that the proposed method is scientific and reasonable. It also shows that it would obviously overestimate the seismic performance in the embankment seismic fragility assessment without considering the uncertainties of the ground motions and structural parameters.

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“…At the same time, the method can fully take the randomness of seismic ground motion and structural dynamic response characteristics under strong earthquake into consideration. This method has been applied to the seismic vulnerability assessment of conventional underground structures [5,6] .…”

Section: Introductionmentioning

confidence: 99%

Seismic vulnerability assessment of multi-storey subway station structure

Liu

Wang

et al. 2021

E3S Web Conf.

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The safety of underground structure under seismic load is an important basis of the normal operation of underground rail transit system. Structural seismic vulnerability assessment based on incremental dynamic analysis method can evaluate the probability of the structure exceeding a certain limit state under a specific seismic intensity in terms of probability. In this paper, the seismic vulnerability of a multi-storey subway station structure is evaluated using this method, and a two-dimensional finite element model of both soil and structure is established by finite element software ABAQUS. The vulnerability curve is obtained through incremental dynamic analysis and mathematical statistics. Based on this curve, the probabilities of the structure exceeding four seismic limit states are obtained under the design seismic intensity and the rarely occurred seismic intensity at 7 degree. Results show that this station may attain slight damage under design seismic intensity of 7 degree, and may attain life safety at the rarely occurred seismic intensity at 7 degree.

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Seismic fragility assessment of the Daikai subway station in layered soil

Cited by 72 publications

References 38 publications

Developments in Seismic Vulnerability Assessment of Tunnels and Underground Structures

Developments in Seismic Vulnerability Assessment of Tunnels and Underground Structures

Embankment Seismic Fragility Assessment under the Near‐Fault Pulse‐like Ground Motions by Applying the Response Surface Method

Seismic vulnerability assessment of multi-storey subway station structure

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