Numerical modeling and parametric analysis of grouted connections under axial loading

Chen, Tao; Cao, Chengcheng; Zhang, Chihai; Wang, Xian; Chen, Ke; Yuan, Guokai

doi:10.1016/j.tws.2020.106880

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…The average effective coefficient of static friction varied between 0.57 and 0.70. Most of the current studies determine the friction coefficient between steel and concrete by fitting the test data, and the value ranges from 0.3 to 0.7 [43][44][45]. Based on these references, as well as the fitting of the test data, the friction coefficient between steel and concrete is also determined as 0.7 in this study.…”

Section: Contact Definitionmentioning

confidence: 98%

Numerical-based analytical model of double-layer steel-LHDCC sandwich composites under punching loads

Zhang

Huang

et al. 2022

Composite Structures

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Section: Contact Definitionmentioning

confidence: 98%

Numerical-based analytical model of double-layer steel-LHDCC sandwich composites under punching loads

Zhang

Huang

et al. 2022

Composite Structures

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“…In the foundation structure of major engineering such as offshore wind power, the mechanical parameters under pressure are important to the structural design calculation of the grout joint section [6]. The standard values of concrete axial compressive strength and elastic modulus used in design calculation have a certain model formula conversion relationship with the cubic strength, and Poisson's ratio also has a specified range [7]. There are obvious differences in composition and properties between the high-strength grouting material and concrete.…”

Section: Introductionmentioning

confidence: 99%

Study on Key Mechanical Parameters of High-Strength Grouting Material

et al. 2023

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In order to better design and calculate in infrastructures, it is necessary to clarify the key mechanical parameters of structural materials, such as axial compressive strength, elastic modulus and Poisson’s ratio. High-strength grouting material (HSGM) have begun to be used as structural materials with the development of large and complex structures. A large number of test dates were used to analyze the relationship between the axial compressive strength and the cubic compressive strength of HSGM in the paper. ABAQUS software was used to model the specimens of axial compressive strength, and the strain cloud maps of concrete and HSGM were compared and analyzed. By considering HSGM as two-phase (sand and paste) composites, the relationship between elastic modulus of HSGM and mechanical parameters of component materials was derived, and the test results of the mechanical properties of HSGM with different ratios of sand to cement were used for verification. The test results show that the axial compressive strength of the HSGM is closer to the cubic strength than that of the concrete material, which accords with the finite element analysis results. The elastic modulus of high-strength grouting material conforms to the theoretical derivation of two-phase material. The material composition is one of the main factors affecting the elastic modulus. Poisson’s ratio range of high-strength grouting material is 0.25 ± 0.01 by statistical analysis.

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“…Chen et al [33] conducted a series of parametric analyses based on an established FE model and concluded that increasing radial stiffness and shear key height-to-spacing ratio could effectively increase axial load resistance of pile-to-sleeve connections. Lotsberg [34] studied the structural mechanics of grouted connections in monopile wind turbine structures when they were subjected to not only axial force but also severe dynamic moment.…”

Section: Introductionmentioning

confidence: 99%

Axial-Load Resistance of a Novel UHPFRC Grouted SHS Tube-Sleeve Connection: Experimental, Numerical, and Theoretical Approaches

et al. 2021

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This study conducts experimental, numerical and theoretical analyses on the axial load resistance of a novel ultra-high performance fiber reinforced concrete (UHPFRC) grouted square hollow section (SHS) tube sleeve connection. The experimental study tests ten full-scale specimens with varying shear key spacings, grout thicknesses, grout lengths and volume proportions of steel fiber in the UHPFRC. Two types of failure modes are observed: (1) for the connection with high strength of the grouted part, the failure mode is fracture of the inner tube; (2) for the connection with lower strength of the grouted part, the failure mode is grout shear crushing with significant bond-slip between grout and steel tube. To further understand the load transfer mechanism of the connection, an advanced 3D nonlinear FE model is built to simulate the axial load-displacement behavior, state of stress and strain, as well as crack development of the grout. Based on the test and FE results, a new theoretical model is derived to predict the axial load resistance of the connection. The proposed model has considered the effect of section shape and material parameters, and is applicable to UHPFRC grouted SHS tube sleeve connection with different corner radii. The validations against the test results show that the new model can provide reasonably effective and accurate predictions to the axial load resistance of the novel grouted sleeve connection subjected to tension.

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Numerical modeling and parametric analysis of grouted connections under axial loading

Cited by 10 publications

References 21 publications

Numerical-based analytical model of double-layer steel-LHDCC sandwich composites under punching loads

Numerical-based analytical model of double-layer steel-LHDCC sandwich composites under punching loads

Study on Key Mechanical Parameters of High-Strength Grouting Material

Axial-Load Resistance of a Novel UHPFRC Grouted SHS Tube-Sleeve Connection: Experimental, Numerical, and Theoretical Approaches

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