Structural Responses of Reinforced Concrete Pile Foundations Subjected to Pressures from Compressed Air for Renewable Energy Storage

Zhang, Dichuan; Kim, Jong; Tulebekova, Saule; Saliyev, Dilmurat; Lee, Deuck Hang

doi:10.1186/s40069-018-0294-z

Cited by 7 publications

(12 citation statements)

References 9 publications

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“…The study covered two structural design parameters, including the number of building stories and pile inner diameters. A full description of the study can be found in Zhang et al [26]. As observed in the study, the concrete pile as an energy storage medium was subjected to considerable high circumferential tensile stresses, which might result in cracking and air pressure leakage in normal-strength concrete.…”

Section: Comparison Of Test Results and Analytical Simulationsmentioning

confidence: 99%

“…To check whether RPC is applicable for the energy storage pile foundation, extensive finite element simulations were conducted to determine critical stress demands in the pile foundation as discussed in Zhang et al [26]. This paper compares the strength of the RPC achieved in this study to the maximum stress demand obtained from analytical simulation.…”

Section: Introductionmentioning

confidence: 99%

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Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

et al. 2018

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Reactive Powder Concrete (RPC) is a newly emerging concrete material that is being used for various applications where high-strength concrete is required. RPC is obtained by removing coarse aggregates and adding fine powders such as silica fume into the concrete mixture. This research has focused on the proportioning and characterization of RPC mixture to be used as a material for energy storage pile application. For mixture parameters, the water-to-binder ratio (WB), silica fume (SF) content, and normal and warm temperature curing have been selected. The relative flowability, penetration resistance, setting time, drying shrinkage, and compressive and flexural strengths were evaluated. Based on the test results, the mixture with WB = 0.22 and SF = 20% was the best mixture with the highest tensile strength and other characteristics. Response surface methodology (RSM) was used to design the experiments and find the optimum mixture proportions to achieve the highest compressive strength. The optimum WB and SF content to achieve the highest strength for combined ages (7 days, 28 days, and 56 days) was determined to be WB = 0.213 and SF = 20%. Through the comparison between the test results and the required strength from analytical simulations, the RPC studied in this paper was deemed to be suitable for the energy storage pile.

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Section: Comparison Of Test Results and Analytical Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

et al. 2018

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“…The compressed air can result in high air pressure at the inner surface of the pile foundation. Extensive analytical and experimental studies have been conducted for the pile foundation subjected to the high air pressure for different pile construction materials, including regular reinforced concrete [7], fiber reinforced concrete [8], high-performance concrete [9,10], steel [11], and steel-concrete composites [12]. In these studies, the compressed air is assumed to go through a complete cooling process, where the temperature of the compressed air will drop back to normal room temperature [7].…”

Section: End Usementioning

confidence: 99%

“…When the energy is needed, the stored compressed air is released and goes through heating and expansion processes to produce electric power. The detailed explanation and equations derivation for the advanced-adiabatic process are discussed in Zhang et al [7]. This paper investigates the temperature changes inside the pile foundation for Option 2.…”

Section: Thermodynamic Processes Of Caesmentioning

confidence: 99%

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Temperature Distributions inside Concrete Sections of Renewable Energy Storage Pile Foundations

et al. 2019

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A new pile foundation system is being developed for renewable energy storage through a multi-disciplinary research project. This system utilizes the compressed air technology to store renewable energy inside the reinforced concrete pile foundation configured with hollowed sections. The compressed air can result in high air pressure to which the structural response of the pile foundation subjected has been studied. However, the temperature in the pile foundation can be affected by the compressed air if sufficient cooling is not provided. The temperature change can generate thermal stresses and affect the structural safety of the pile foundation. As a first step to investigate this thermal effect, this paper studies temperature distributions inside the concrete section for the pile foundation through non-steady state heat transfer analyses. Several parameters were considered in the study, including thermal conductivities of the concrete, specific heat capacities of the concrete, and dimensions of the pile foundation. It has been found that the temperature distribution along the concrete section varies significantly during a daily energy storage cycle as well as subsequent cycles due to the cumulative effect of residual temperatures at the end of each cycle. The temperature distribution is largely affected by the thermal conductivity of the concrete and the geometry of the pile foundation. The obtained temperature distribution can be used for investigation of the thermal stress inside the foundation and surrounding soil.

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Development of Torsional Strength Model for Steel Fiber Reinforced Concrete Beams with Transverse Reinforcement

Kryzhanovskiy

Zhang

et al. 2023

Int J Civ Eng

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Structural Responses of Reinforced Concrete Pile Foundations Subjected to Pressures from Compressed Air for Renewable Energy Storage

Cited by 7 publications

References 9 publications

Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

Temperature Distributions inside Concrete Sections of Renewable Energy Storage Pile Foundations

Development of Torsional Strength Model for Steel Fiber Reinforced Concrete Beams with Transverse Reinforcement

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