Experimental study on seismic performance of steel fiber reinforced concrete wall piers

Babaei, Amir; Mortezaei, Alireza; Salehian, Hamidreza

doi:10.1002/suco.202000104

Cited by 8 publications

(4 citation statements)

References 50 publications

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“…In this study, the recommended yield and ultimate rotations of 0.84% and 4.28%, respectively, for RC coupling beams with aspect ratios varying from 1.0 to 2.0 were adopted. The DS, damage definition, and DI corresponding to each DS, calculated by way of Equations and (17), are shown in Table 3. It is noteworthy that Table 3 shows the DI for a single component.…”

Section: Rc Coupling Beamsmentioning

confidence: 99%

“…Researchers [ 6‐10 ] have obtained the fragility curves for high‐rise building by adopting the MIDRs recommended in various codes [ 11‐13 ] and references. [ 7,14,15 ] For high‐rise building with shear wall system, Lu et al [ 16 ] and Babaei et al [ 17 ] conducted researches on seismic performance of steel fiber RC walls. The test result can be used to define the limit state of such type of buildings.…”

Section: Introductionmentioning

confidence: 99%

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Component damage‐based seismic fragility analysis of high‐rise building with transfer structure

Liang

2022

Structural Design Tall Build

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Summary Fragility analysis is an effective tool used to assess the seismic risk of high‐rise buildings. During the process of fragility analysis, determining the engineering demand parameters (EDPs) corresponding to different damage states is of great importance as they directly influence the fragility results. However, for buildings with transfer structures, the EDPs corresponding to different damage levels are difficult to determine since the maximum demand in such buildings is mostly concentrated at the level of irregularity. Obtaining the fragility curves at component level (as used for bridge structures) may provide new insight into the seismic fragility analysis of buildings with transfer structures. Due to differences in structural systems and seismic response, it may be questionable whether such an approach can be directly applied to the fragility analysis of high‐rise buildings. In view of this, a component damage‐based approach suitable for high‐rise buildings and a detailed framework through which to obtain the fragility curves are proposed in this study. This method was applied to assess the seismic risk of a 34‐story concrete building with a transfer plate. The damage states for various structural components were obtained through a damage index (DI) model. The relationship between the DIs of the components and the maximum inter‐story drift ratios (MIDRs) was generated by cloud analysis, and MIDRs corresponding to different component damage states were obtained. The fragility curves at both component and system levels were evaluated. Numerical results indicate that, at the conservative level of PGA (0.2 g), the probability that the main components of the building incur irreparable damage is small, and the performance‐based seismic design requirements can be met.

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Section: Rc Coupling Beamsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Component damage‐based seismic fragility analysis of high‐rise building with transfer structure

Liang

2022

Structural Design Tall Build

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“…Similarly, the cast-in-place reinforced concrete underground silo is also an attractive structural form of the underground silo [11]. However, the issue of ensuring these silos are waterproof and moisture-proof still restricts their extensive application and promotion [12,13]. Polypropylene plastic is waterproof, corrosion-resistant, easy to construct, non-toxic and harmless [14], and meets food storage standards.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Plastic–Concrete Waterproof Walls of an Underground Granary Subject to Combined Bending Moment and Water Pressure

et al. 2022

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To investigate the mechanical properties of plastic–concrete silo walls in practice, the mechanical properties and failure mechanism under the combined bending moment and water pressure were analyzed through the uniform loading test, water pressure test, and numerical analysis. The influence of the connecting plate spacing, radius, and the waterproof plate thickness on the water pressure-bearing capacity were analyzed. The test results show that the chemical adhesive force exists between the waterproof plate and concrete and can resist 20 kPa. The displacement and strain of the waterproof plate increases significantly with the increment in water pressure. When the water pressure reached 85 kPa, the specimen was damaged due to shear failure. The established numerical model was validated by the test results. The numerical analysis results show that the specimen failure mainly depends on the bolt strength when the thickness of the waterproof plate is greater than 14 mm or the radius of the connecting plate is greater than 60 mm. The relation between the design parameters and the water pressure-bearing capacity was proposed. Compared with the waterproof plate thickness, the connecting plate spacing and radius have greater influence on the water pressure-bearing capacity.

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“…After investigating the seismic performance of eight wall piers made of SFRC with different aspect ratios, steel percentages and concrete strength subjected to lateral load. Babaei et al [ 20 ] pointed out that compared to conventional concrete, SFRC changes failure modes and deformational characteristics and increases the energy dissipation capacity, stiffness in every drift value, load‐bearing capacity, and yielding length. Hao and Hao [ 21 ] extended an experimental study of spiral‐shaped SFRC specimens under impact loads considering different volume fractions of fibers.…”

Section: Introductionmentioning

confidence: 99%

Energy dissipation and damage on the interface of steel and steel fiber‐reinforced concrete composite column

Qian

Zheng

et al. 2022

Structural Design Tall Build

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To address the problems faced with steel-reinforced concrete (SRC) in construction, such as positional conflicts between steel and steel bars or difficulty in pouring concrete, a novel "Steel and Steel Fiber-Reinforced Concrete" (SSFRC) composite structure was proposed. Push-out tests of 34 SSFRC composite columns were carried out in this paper to study the interfacial bond performance from the perspective of energy dissipation. Based on loading-displacement (P-D) curves, the interfacial energy dissipation (W b ) and energy dissipation factor (λ) were introduced, and the influence of embedded length (L e ), steel fiber volume rate (ρ sf ), thickness of concrete cover (C ss ), and section type on W b and λ were analyzed. Test results indicated that circular column is better than square column in terms of W b and λ. The increase of L e , C ss , or ρ sf is beneficial to the improvement of W b , and λ is positively correlated with ρ sf and C ss but negatively correlated with L e . Additionally, the interfacial damage (D a ) was defined by the relationship between elastic deformation energy (W a ) and W b . It can be concluded that the ascent of L e and C ss can effectively delay the appearance of D a and inhibit the development of D a , respectively, and D a develops slowly with the increase of ρ sf at the later loading stage.

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Experimental study on seismic performance of steel fiber reinforced concrete wall piers

Cited by 8 publications

References 50 publications

Component damage‐based seismic fragility analysis of high‐rise building with transfer structure

Component damage‐based seismic fragility analysis of high‐rise building with transfer structure

Experimental and Numerical Investigation of Plastic–Concrete Waterproof Walls of an Underground Granary Subject to Combined Bending Moment and Water Pressure

Energy dissipation and damage on the interface of steel and steel fiber‐reinforced concrete composite column

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