Tensile and flexural tests on ultrahigh performance concrete grouted sleeve connection

Qiu, Minghong; Shao, Xudong; Zhu, Yanping; Hussein, Husam H.; Liu, Yeping

doi:10.1002/suco.202200045

Cited by 7 publications

(10 citation statements)

References 34 publications

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“…Its extraordinary mechanical properties and durability contribute to the construction of high-performance, long-lasting structures, thereby enhancing the overall sustainability and resilience of our built environment. [13][14][15] In the field of bridge engineering, engineers and researchers have explored various cross-sectional forms utilizing UHPC, including steel-UHPC composite beams and UHPC box-section beams. [16][17][18][19][20][21][22] The T-shaped section offers distinct advantages over simple rectangular or square beams.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study and optimal design of UHPC T‐shaped beam

Deng,

Huang,

Yan

et al. 2024

Structural Concrete

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In this paper, the ordinary reinforced UHPC T‐shaped beam, steel plate reinforced UHPC T‐shaped beam and prestressed UHPC T‐shaped beam were compared by conducting the flexure test. The vertical displacement, crack development, strain change, and crack resistance were discussed. The steel plate reinforced UHPC T‐shaped beam shown better cracking resistance and mechanical properties. Based on the research, the multi‐scale finite element model of the steel plate reinforced UHPC T‐shaped beam was established, and the influence parameters were analyzed. The beam height, steel plate thickness and web thickness shown great influence on the ultimate bearing capacity of the beam. The bearing capacity calculation formulas of the steel plate reinforced UHPC T‐shaped beam based on the plastic strengthening model of the steel were proposed. The calculation results shown good agreement with the test value.

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Section: Introductionmentioning

confidence: 99%

“…By virtue of its exceptional properties, UHPC offers multiple advantages in construction. Its extraordinary mechanical properties and durability contribute to the construction of high‐performance, long‐lasting structures, thereby enhancing the overall sustainability and resilience of our built environment 13–15 …”

Section: Introductionmentioning

confidence: 99%

Experimental study and optimal design of UHPC T‐shaped beam

Deng,

Huang,

Yan

et al. 2024

Structural Concrete

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“…[2][3][4][5][6] The current injection strengthening technology has been widely applied in many fields of building structures. [7][8][9] Pile-end post grouting is the process of injecting cement slurry into the soil at the pile end; this slurry fills, permeates, and consolidates the sediments and disturbed soil around the piles to form highstrength grouting reinforcement soil. Thus, the bearing capacity of the pile foundation can be enhanced.…”

Section: Introductionmentioning

confidence: 99%

“…To effectively solve these two issues, pile‐end post grouting and pile‐side post grouting techniques were used to improve the bearing capacity of piles and reduce pile settlement 2–6 . The current injection strengthening technology has been widely applied in many fields of building structures 7–9 . Pile‐end post grouting is the process of injecting cement slurry into the soil at the pile end; this slurry fills, permeates, and consolidates the sediments and disturbed soil around the piles to form high‐strength grouting reinforcement soil.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of slurry flow in pile‐end grouting of the drilling with prestressed concrete pipes

Wang,

Cui,

Shan

et al. 2023

Structural Concrete

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Understanding the diffusion law of cement slurry is the key to analyzing and evaluating the reinforcement effect of grouting. This study aimed to reveal the flow grouting mechanism of slurry in the reserved space between piles and soil and the penetration diffusion rule of slurry in the soil around the piles. For this purpose, the grouting slurry was regarded as a Newtonian fluid. The Navier–Stokes equations of fluid mechanics and renormalization group k–ε model were used to study the flow diffusion of slurry in the reserved space around a pile for grouting the drilling with prestressed concrete pipes. The permeability of soil slurry was determined using Darcy's law, and the flow field of slurry during grouting was numerically simulated. The results showed that the flow velocity of slurry and the reinforcement effect of grouting decrease gradually as the flow path extends. The radial flow of slurry in the grouting pipe shows a clear trend of circumferential diffusion. The slurry thickness in the reserved space for grouting decreases with an increase in the distance from the grouting outlet. Its attenuation trend becomes more obvious with increasing grouting height. The grouting thickness directly reflects the filling effect of slurry and is an important index to evaluate the grouting effect of drilling with prestressed concrete pipes.

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“…In recent years, with continuous advances in geotechnical engineering theories and test equipment [1], geotechnical engineering reinforcement technologies have developed rapidly. It is mainly divided into anchoring [2,3] and grouting technologies.…”

Section: Introductionmentioning

confidence: 99%

Settlement Characteristics of Split Grouting Pile Composite Foundation in Loess Areas

Ming-ru

Liu

Chen

et al. 2022

Advances in Civil Engineering

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Loess foundations often affect the stability of superstructures due to their insufficient bearing capacities; thus, reinforcement measures are crucial for mitigating the uneven settlement of foundations. This study aims to investigate the settlement characteristics of composite foundations for loess foundations reinforced by splitting grouting piles. First, split grouting tests were carried out on loess foundations. After the test piles reached the design strength, static load tests and geotechnical tests were carried out to obtain the Q-s curves of the test piles. The pile-forming mechanism was analyzed via excavations at an on-site test pile. Furthermore, the traditional settlement calculation method of composite foundations was used to calculate the settlement of split grouting pile composite foundations, and the results were compared with field test results to explore a suitable settlement calculation method of split grouting pile composite foundations. Finally, the numerical model of split grouting pile composite foundations was established according to the pile forming mechanism, and the settlement deformation characteristics of single pile and pile group composite foundations were analyzed. The relative errors of the composite modulus method and the stress correction method for calculating the settlement of the composite foundations were 6.4% and 32.8%, respectively, and the composite modulus method was closer to the test values. The calculated curves of the numerical model were in good agreement with the measured curves and relevant literature research results, demonstrating the rationality of the modeling method; the findings of this study provide theoretical guidance for designing loess foundation splitting grouting reinforcement and for predicting settlement during later construction periods.

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Tensile and flexural tests on ultrahigh performance concrete grouted sleeve connection

Cited by 7 publications

References 34 publications

Experimental study and optimal design of UHPC T‐shaped beam

Experimental study and optimal design of UHPC T‐shaped beam

Numerical analysis of slurry flow in pile‐end grouting of the drilling with prestressed concrete pipes

Settlement Characteristics of Split Grouting Pile Composite Foundation in Loess Areas

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