Optimized High-Performance Concrete in Grouted Connections

Anders, Steffen; Lohaus, Ludger

doi:10.1201/9781439828410.ch63

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…Once the load increases additional configuration was found to be 34 ο (figure 15a). This cracking behaviour compares well with findings reported on previous experimental studies involving GCs with similar shear key spacing and ratios [29].…”

Section: Grout Failure Modessupporting

confidence: 90%

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Non-linear finite element analysis of grouted connections for offshore monopile wind turbines

et al. 2019

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Section: Grout Failure Modessupporting

confidence: 90%

“…The upper limit suggested in design guidelines [9] for GCs with shear connectors is set to h/s<0.1, ratios from 0.02 to 0.05 [7,28,29]. Similar ratios can be found in the literature for axially loaded GCs.…”

Section: Shear Key Ratiomentioning

confidence: 94%

Non-linear finite element analysis of grouted connections for offshore monopile wind turbines

et al. 2019

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“…In order to further study the accuracy and effectiveness of the formula in different codes, the axial test results of 270 grouted connections with shear keys were collected in the study [8,[16][17][18][19][20][21][22][23][24][25]. Then the code calculation process was applied to compare the results with the experimental ones.…”

Section: Data Acquisition and Verificationmentioning

confidence: 99%

Comparison of Prediction Methods for Axial Strength of Grouted Connections with Shear Keys

2020

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Grouted connections are commonly used in marine engineering, especially on oil platforms, cross-sea bridges, and offshore wind power turbines. The prediction methods for axial carrying capacity of grouted connections with shear keys and their application ranges in current codes were analyzed in this paper. The calculated results by using different codes were compared based on a practical grouted connection between steel piles and the jacket foundation of a wind turbine. The research team conducted axial compression tests on seven specimens, collected a wide range of experimental results to establish a database, and finally compared the standard calculation results with the experimental results. The study indicates that the axial strength of grouted connections predicted by different methods is distinct. The calculation formula of the British Health and Safety Executive (HSE, 2002) has obvious limitations; specifically, with increased shear keys, strength is overestimated, resulting in insecure design outcome of structures. The results calculated by the Norwegian Det Norske Veritas (DNV, 2013) are generally consistent with the experimental results, in which the reduction effect of multiple shear keys was considered. The prediction method of the American Petroleum Institute (API, 2007), which undervalues the bearing performance of connections, is excessively conservative. The method of the combined Norwegian and German Det Norske Veritas–Germanischer Lloyd (DNV-GL, 2016) has wider applicability and is safe, reliable, and economical.

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“…Subsequently, the United States, Japan, Australia and other countries conducted systematic research on this connection technology [18][19][20][21][22]. Karsan and Krahl [23] proposed the calculation formula to predict the shear resistance of grouted connections and compiled it into the API code [24].…”

Section: Introductionmentioning

confidence: 99%

Load transfer mechanism of an unwelded, unbolted, grouted connection for prefabricated square tubular columns under axial loads

Sui

Fan

Huang

et al. 2020

Engineering Structures

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This study develops a novel unwelded, unbolted, ultrahigh-performance fibre-reinforced concrete (UHPFRC) grouted connection for prefabricated square tubular composite columns. Herein, eight full-scale columns with UHPFRC grouted connections are tested to investigate their ultimate tensile and compressive resistance. The test results show that the novel connections exhibit good resistance and structural stiffness. The primary failure modes are punching shear of the end plate, welding fracture at the inner tube, tube yielding and local buckling of the steel tube. The test specimens are simulated using finite element analysis in ABAQUS. The experimental and simulated results are in good agreement, indicating that the FE simulations can capture the observed failure modes and ultimate resistance. Thereafter, existing analytical design formulas are evaluated to assess their suitability to predict the compressive and tensile resistance of prefabricated tubes with/without the novel grouted connections. A good agreement between the formula predictions and the test results are observed.These analytical formulas have the potential to be used in the design of the novel unwelded, unbolted, UHPFRC grouted connections for prefabricated steel, reinforced concrete and steel-concrete composite columns.

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Optimized High-Performance Concrete in Grouted Connections

Cited by 7 publications

References 2 publications

Non-linear finite element analysis of grouted connections for offshore monopile wind turbines

Non-linear finite element analysis of grouted connections for offshore monopile wind turbines

Comparison of Prediction Methods for Axial Strength of Grouted Connections with Shear Keys

Load transfer mechanism of an unwelded, unbolted, grouted connection for prefabricated square tubular columns under axial loads

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