Seismic fragility of arch dams based on damage analysis

Wang, Jinting; Ming-xu, Zhang; Jin, Ai-Yun; Zhang, Chuhan

doi:10.1016/j.soildyn.2018.01.018

Cited by 66 publications

(12 citation statements)

References 22 publications

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“…Based on the dam–reservoir–foundation system, seismic fragility analysis provides a method for evaluating the safety margin of dams above a specific risk level. Wang et al 31 investigated the seismic fragility of arch dams on the basis of damage analysis through the dam–reservoir–foundation system described in Section 4.1. Considering damage distribution and joint opening, three limit states, including slight damage, moderate damage, and severe damage, were defined for arch dams to generate fragility curves.…”

Section: Seismic Response and Risk Assessment Of Damsmentioning

confidence: 99%

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Recent developments on seismic safety evaluation of concrete dams

Zhang

2022

Earthquake Engineering and Resilience

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The Tsinghua Group of Earthquake Resistance on Dams has conducted seismic analysis and safety evaluation of concrete dams since the early 1980s. This paper reviews the recent developments achieved by the group, including source–media–structure simulation, dynamic experimental tests and mesoscale numerical simulation of concrete, and seismic response analysis and risk evaluation. In the end, the development trends of seismic safety evaluation are summarized, and the earthquake disaster chain of cascade dams is introduced.

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Section: Seismic Response and Risk Assessment Of Damsmentioning

confidence: 99%

“…I G U R E 11 Sketch of the nonlinear analysis model for arch dam-water-foundation systems T A B L E 1 Limit state criteria for classifying arch dam seismic damage and joint opening31 …”

mentioning

confidence: 99%

Recent developments on seismic safety evaluation of concrete dams

Zhang

2022

Earthquake Engineering and Resilience

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“…The widespread use of submerged columns with complicated geometry other than circular cross -sections is facilitated by the ongoing advancement of offshore engineering (Wang et al [15]). To study the damage characteristics of dams, Wang et al [16] employed the Lagrange formulation of fluid in the reservoir-damfoundation numerical model. The boundary element method (BEM) has also been used to shed light on the FSI problems in the engineering sectors (Xu et al [17], Liu [18]).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Deepwater Pile Foundation Bridge Piers under Current-wave and Earthquake Excitation

Alsultani¹,

Karim

Khassaf

2022

ETJ

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 The major methods for investigating the interaction between a wave current and an elevated pile cap foundation are discussed.  The changing rule of hydrodynamic pressure with water depths, current speed, wave properties, earthquake amplitudes, and frequencies are presented.  A series of combined current-waveearthquake tests are shown.Pile foundation bridges are structures extending in the middle of the sea, so they are subject to currents, waves, and earthquake forces. This article presents a hybrid simulation that was used with input excitations of different current velocities, wave properties, and earthquake amplitudes to assess the non-linear dynamic behavior of pile foundation bridge piers. Based on the interface between M ATLAB and ABAQUS software, the general formulations of fluid-structure interaction (FSI) under combined current-wave and earthquake loads are derived. Hydrodynamic and earthquake loading is consistently introduced by creating synthetic time histories of combined current-wave actions and spatially variable ground motion.The behavior of the dynamic model of a deepwater pile foundation bridge for the Songhua River in northeast China was adopted as an example of the study. The accuracy of the created model was verified using prior experimental and analytical computations. It is demonstrated how both linear and nonlinear dynamic behavior performs at various water depths under coupled current-wave-earthquake loading conditions. Revealing interesting aspects, particularly in terms of relative displacement, acceleration, shear, and moment response are shown. The results showed that the hybrid model is an efficient of simulating accurate predictions of the hydrodynamic pressure during earthquake actions for structures in coastal areas.

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“…e development of fragility curves is not only limited to building structures. Pang et al [9] and Rasheed et al [10] conducted their researches for bridges, while Wang et al [11] and Yazdani and Alembagheri [12] established the fragility curves for dams. e present paper specifically considers the building structure only for developing the analytical fragility curves.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Assessment of School Buildings in Seismic Zone 4 of Pakistan

Zain

Usman

Farooq

et al. 2019

Advances in Civil Engineering

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Thick population density and its escalation propensity in seismically active regions of Pakistan has raised sincere concerns about the performance of building stock whose suboptimal performance and complete collapses led to a colossal number of casualties during the past earthquakes. The current research is inspired by the Kashmir earthquake of 2005 which consumed more than 80,000 lives, out of which, approximately 19,000 were children due to wide spread collapse of school buildings. A new database for existing reinforced concrete (RC) school buildings in seismic zone 4 of Pakistan has been developed using the surveyed information and presented briefly. The paper presents the statistics of the data collected through field surveys and professional interviews. It was found that the infrastructural authorities in the considered region developed some specific designs for school buildings, with varying architectural and structural configurations, which were eventually replicated throughout the area. In the current study, almost 2500 schools were surveyed for identifying versatile architectural and structural configurations, and subsequently, 19 different types had been identified, which were eventually used as representative stock for the schools in seismic zone 4 of Pakistan, Muzaffarabad district. The results of the study yield the brief of the collected data from the field and a consolidated methodology for establishing the analytical fragility relationships for one of the 19 structural configurations of the school buildings. A sample building from the collected data has been selected by considering the maximum number of students, and afterwards, the vulnerability is assessed by employing incremental dynamic analysis (IDA) which constitutes the presented methodology. Finally, the fragility curves are developed and presented for the said building type. The derived analytical fragility curves for the considered building type indicate its structural vulnerability and as a whole represent its satisfactory behavior. The vulnerability assessment process and the fragility development are described in an easy manner so that the domestic practicing engineers can readily become able to extend the application towards other school buildings in the region. The developed relationships can be employed for rational decision making so that essential disaster preparedness can be carried out by identifying any need for structural strengthening and interventions.

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Seismic fragility of arch dams based on damage analysis

Cited by 66 publications

References 22 publications

Recent developments on seismic safety evaluation of concrete dams

Recent developments on seismic safety evaluation of concrete dams

Dynamic Response of Deepwater Pile Foundation Bridge Piers under Current-wave and Earthquake Excitation

Seismic Vulnerability Assessment of School Buildings in Seismic Zone 4 of Pakistan

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