Seismic fragility curves for vulnerability assessment of steel fiber reinforced concrete segmental tunnel linings

Avanaki, Mohammad Jamshidi; Hoseini, Abdollah; Vahdani, Shahram; Santos, Cristian de; Fuente, Albert de la

doi:10.1016/j.tust.2018.04.032

Cited by 59 publications

(14 citation statements)

References 29 publications

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“…rough shaking table test, it is found that polypropylene fiber concrete as lining can reduce the stress and strain of a tunnel under earthquake action [10]. Steel fiber reinforced concrete has better antiseismic performance than ordinary reinforced concrete [11,12]. Although there are many research studies on fiber reinforced concrete, the application of fiber reinforced concrete in engineering is less, and its antiseismic effect in specific projects is not clear, so further research is needed.…”

Section: Introductionmentioning

confidence: 99%

Study on Antiseismic Effect of Different Thicknesses of Shock Absorption Layer on Urban Shallow Buried Double Arch Rectangular Tunnel

Wang

et al. 2022

Shock and Vibration

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With the development of urban tunnels, more and more studies focus on the antiseismic design of tunnels. Setting up a shock absorption layer is a very effective means in the earthquake resistance of an urban tunnel. In this paper, in order to study the influence of the thickness of a shock absorption layer on the antiseismic effect of the urban shallow buried double arch rectangular tunnel, the Tengzhou–Fenghuang tunnel is used as the research background. Firstly, the model is established by finite element software to analyze the tunnel with 50 mm, 100 mm, and 150 mm thick shock absorption layers, and analyze the tunnel displacement, stress, and safety factors of different models under the action of a seismic wave. Finally, the calculation results are compared and analyzed with those of the model without the shock absorption layer to summarize the thickness of the shock absorption layer suitable for urban shallow buried rectangular tunnels. The results show that the displacement and stress of tunnel lining are significantly reduced, and the safety factor is significantly improved after setting the shock absorption layer. Among them, the tunnel with a 100 mm thick shock absorption layer has the greatest reduction in principal stresses, the greatest increase in safety factor, and the best antiseismic effect, while the construction costs are not high. It is recommended that the urban shallow buried double arch rectangular tunnel be constructed with a 100 mm thick shock absorption layer.

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Section: Introductionmentioning

confidence: 99%

Study on Antiseismic Effect of Different Thicknesses of Shock Absorption Layer on Urban Shallow Buried Double Arch Rectangular Tunnel

Wang

et al. 2022

Shock and Vibration

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“…The addition of fibres in concrete develops the stress transfer mechanism by bridging cracks [ 9 ]. Due to good physical and mechanical parameters of SFRC it is applied for making various structural elements such as foundation slabs [ 10 ], bridge slabs [ 11 ], industrial floors [ 12 ], columns [ 13 , 14 ] or tunnel elements [ 15 , 16 , 17 , 18 ]. In SFRC production waste materials can also be applied [ 19 ] bearing in mind sustainable development of construction industry.…”

Section: Introductionmentioning

confidence: 99%

A Statistical Model of Fibre Distribution in a Steel Fibre Reinforced Concrete

Kobaka

2021

Materials

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The aim of the research was to create a model of steel fibre distribution in a Steel Fibre Reinforced Concrete space using statistical probability means. The model was created in order to better understand the behaviour of the composite under operating conditions. Four statistical distributions (Beta, Kumaraswamy, Three Parameter Beta and Generalised Transmuted Kumaraswamy) were examined to find the distribution that best described fibre settling phenomenon caused by manufacturing process conditions. In the next stage the chosen statistical distribution was adapted to create the model of steel fibre distribution in a Steel Fibre Reinforced Concrete space. The model took into account technological conditions such as vibrating time and properties such as consistency of the tested concrete. The model showed a good agreement with the real fibre distribution.

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“…In developed countries, more than 50% of total concrete produced is used in structural applications [6]. Therefore, FRC has been tested increasingly as a solution for partially or even completely replacing reinforcement for applications such as ground-supported slabs [7][8][9], pavements [10,11], roads, tunnel linings [12][13][14][15][16][17][18], pipe sewer lines [19,20], and flat slabs [21][22][23][24][25], which means that it is increasingly used in elements exposed to bending, resisting gravitational, long-term loads. Owing to extensive research over past years, structural design of FRC has been incorporated into several design codes, such as the fib Model Code 2010, ACI 318, Italian and the Spanish Code [26].…”

Section: Introductionmentioning

confidence: 99%

Systematic Review on the Creep of Fiber-Reinforced Concrete

2020

Self Cite

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Fiber-reinforced concrete (FRC) is increasingly used in structural applications owing to its benefits in terms of toughness, durability, ductility, construction cost and time. However, research on the creep behavior of FRC has not kept pace with other areas such as short-term properties. Therefore, this study aims to present a comprehensive and critical review of literature on the creep properties and behavior of FRC with recommendations for future research. A transparent literature search and filtering methodology were used to identify studies regarding creep on the single fiber level, FRC material level, and level of structural behavior of FRC members. Both experimental and theoretical research are analyzed. The results of the review show that, at the single fiber level, pull-out creep should be considered for steel fiber-reinforced concrete, whereas fiber creep can be a governing design parameter in the case of polymeric fiber reinforced concrete subjected to permanent tensile stresses incompatible with the mechanical time-dependent performance of the fiber. On the material level of FRC, a wide variety of test parameters still hinders the formulation of comprehensive constitutive models that allow proper consideration of the creep in the design of FRC elements. Although significant research remains to be carried out, the experience gained so far confirms that both steel and polymeric fibers can be used as concrete reinforcement provided certain limitations in terms of structural applications are imposed. Finally, by providing recommendations for future research, this study aims to contribute to code development and industry uptake of structural FRC applications.

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Seismic fragility curves for vulnerability assessment of steel fiber reinforced concrete segmental tunnel linings

Cited by 59 publications

References 29 publications

Study on Antiseismic Effect of Different Thicknesses of Shock Absorption Layer on Urban Shallow Buried Double Arch Rectangular Tunnel

Study on Antiseismic Effect of Different Thicknesses of Shock Absorption Layer on Urban Shallow Buried Double Arch Rectangular Tunnel

A Statistical Model of Fibre Distribution in a Steel Fibre Reinforced Concrete

Systematic Review on the Creep of Fiber-Reinforced Concrete

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