Test on axial compression performance of perforated welded H-shaped steel stub column

Kong, Wenyuan; Lin, Qingjie; Zhang, Xiaoyong; Chen, Yu

doi:10.1016/j.jcsr.2022.107191

Cited by 5 publications

(8 citation statements)

References 26 publications

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“…Moreover, Figure 6a indicates that the maximum relative error between the numerical models and experimental results for the ultimate loads of the six columns was less than 5.3%. The numerical models exhibited a slight underestimation of the test results, which is consistent with the findings of the original paper [24]. Several factors may contribute to this discrepancy, including the absence of residual stress and a significant but imprecisely measured initial geometric deflection being incorporated into the numerical models.…”

Section: Validation Of Numerical Modelssupporting

confidence: 85%

“…The H-section stub steel columns tested in reference [24] possessed the following dimensions: a length of 450 mm, a flange width (B) of 175 mm, a section height (H) of 175 mm, a flange thickness (t f ) of 11.5 mm and a web thickness (t w ) of 7.5 mm. These identical H-section sizes were adopted for the numerical models in this study.…”

Section: Randomly Pitted H-section Columnsmentioning

confidence: 99%

“…For numerical analyses, a bilinear ideal elastic-plastic model was utilized as the constitutive model for the steel. The material properties included an elastic modulus (E) of 196 GPa, Poisson's ratio (ν) of 0.3, yield strength (f y ) of 390.09 MPa, and tensile strength (f u ) of 626.05 MPa, which were all identical to the tested columns [24]. Both material and geometric nonlinearity were taken into account, while the influence of residual stress was disregarded.…”

Section: Randomly Pitted H-section Columnsmentioning

confidence: 99%

“…In this section, the numerical models of pitted H-section stub columns were validated against the test results [24]. The experiments involved axial compression tests on perforated steel H-section stub columns, where the presence of perforations signifies severe pitting corrosion damage.…”

Section: Validation Of Numerical Modelsmentioning

confidence: 99%

See 3 more Smart Citations

Ultimate Compressive Strength of H-Section Stub Columns Subject to Random Pitting Corrosion Damage

Wang,

2023

Applied Sciences

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H-section columns with random pitting corrosion exhibit localized damage, making it imperative to conduct a thorough assessment in order to guarantee their long-term structural safety and integrity. This paper presents a method for constructing finite element models of randomly pitted H-section stub columns. The accuracy of the models was first validated against existing experiments. Various scenarios, accounting for different levels of pitting intensities and locations of corrosion occurrence, were considered, to elucidate the mechanisms of the reduction in ultimate strength and stiffness, as well as the failure of columns. Additionally, the influence of the width-to-thickness ratio of the plate on the ultimate strength of stub columns was also taken into account. A method to address the thickness loss resulting from random pitting corrosion was proposed for the ultimate strength assessment of randomly pitted stub columns, and its accuracy was verified based on the Chinese and European Standards. An empirical formula was proposed and verified upon the results of numerous stochastic simulations of randomly pitted H-section columns. The results demonstrated that for axially loaded H-section stub columns, both ultimate strength and stiffness decrease significantly and nonlinearly with the increase in the degree of pitting damage. Corrosion can change the failure mode of a stub column by inducing local buckling in a plate that initially satisfies the buckling criterion before the overall column failure.

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Section: Validation Of Numerical Modelssupporting

confidence: 85%

Section: Randomly Pitted H-section Columnsmentioning

confidence: 99%

Section: Randomly Pitted H-section Columnsmentioning

confidence: 99%

Section: Validation Of Numerical Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Ultimate Compressive Strength of H-Section Stub Columns Subject to Random Pitting Corrosion Damage

Wang,

2023

Applied Sciences

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“…Several factors can affect the mechanical properties of H-beams. With a rise in the opening ratio, the corresponding bearing capacity reduction coefficient became more noticeable for specimens with dense web openings, according to Kong 12 's study of the mechanical characteristics of perforated welded H-beam short columns under axial compression. Many methods have been utilized to detect damage, such as the use of ultrasonic technology to study fatigue damage behavior, which can reveal the severity of damage through strain signals 13 .…”

Section: Introductionmentioning

confidence: 96%

Piezoelectric ceramic sensor-based structural health monitoring of diagonally braced H-shaped steel structures

Wu,

Xiao,

Zhu

2023

Sci Rep

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In this study, we propose a piezoelectric ceramic sensor-based health monitoring method to monitor the stress state of diagonally braced H-shaped steel structures. Loading experiments were carried out on diagonally braced H-shaped steel under different working conditions. Subsequently, the amplitude and energy of piezoelectric signals under these two working conditions were compared and analyzed, and finite element analysis was performed using ABAQUS software to verify the results. The experimental results showed that with an increase in the web height or load, the time-domain waveform energy index of the H-shaped steel increased. Under different working conditions, such as a diagonally braced H-shaped steel member with a web height of 10 cm, when the pressure value was less than 10 N/mm2, the energy index increased by approximately 15.98% for every 1 N/mm2 increase in the pressure. When the pressure value was greater than 10 N/mm2 and less than 15 N/mm2, the energy index increased by approximately 1% for every 1 N/mm2 increase in pressure. Further, the energy index increased by approximately 8.4% for every 1 cm increase in the height of the web. Simultaneously, it can be seen from the results of the finite element analysis that the stress and strain at the induction position of the piezoelectric ceramic sensor increased with an increase in the external pressure. The study of structural health monitoring for diagonally braced H-shaped steel structures holds significant importance in ensuring the safety and reliability of these structures, achieving predictive maintenance, evaluating structural performance and energy efficiency, and optimizing structural maintenance.

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Compressive Strength of Tubular Members with Combined Pitting Corrosion and Crack Damage

Wang,

Wang

2023

China Ocean Eng

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Test on axial compression performance of perforated welded H-shaped steel stub column

Cited by 5 publications

References 26 publications

Ultimate Compressive Strength of H-Section Stub Columns Subject to Random Pitting Corrosion Damage

Ultimate Compressive Strength of H-Section Stub Columns Subject to Random Pitting Corrosion Damage

Piezoelectric ceramic sensor-based structural health monitoring of diagonally braced H-shaped steel structures

Compressive Strength of Tubular Members with Combined Pitting Corrosion and Crack Damage

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