Experimental investigation on compressive behavior of corroded thin-walled CHS T-joints with grout-filled GFRP tube repairing

Zuo, Wenkang; Chang, Hongfei; Li, Zhaowei; An, Aichen; Xia, Junwu; Yu, Tao

doi:10.1016/j.tws.2022.109222

Cited by 22 publications

(4 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Restraint to the chord bulge was provided by the confinement of the entire interaction surface of the grouted clamp. The failure mechanism of the repaired joint was complex, and the numerical simulation results did not confirm the simplified mechanism proposed by Zuo [59]. Numerical analysis offers a more comprehensive understanding of grouted clamps; however, their actual failure mechanism requires further investigation.…”

Section: Ductilementioning

confidence: 84%

“…To the best of the authors' knowledge, a comprehensive theoretical approach for T-joints with grouted clamps has not been developed to date. Zuo [59] proposed an improved theoretical model for a grout-filled GFRP T-joint (Figure 13(a)-13(c)) based on a typical ring model [50].…”

Section: Ductilementioning

confidence: 99%

“…To contend with the complexities of corrosion damage, the American Society of Mechanical Engineers has issued a manual [27] addressing corroded pipelines, which presupposes that long-term corrosion manifests as having an average maximum depth. Building on these widely accepted principles, researchers [28][29][30] have simulated uniform corrosion on tubular structures to study the mechanical impacts on damaged joints.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite Element Analysis of Corrosion Tubular T-Joint Repaired with Grouted Clamp

Deng,

Guo,

Zhu

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

A finite element (FE) analysis of corroded circular hollow section T-joints repaired using grouted clamps is presented in this study. To ensure an accurate simulation, experiments on a T-joint with uniform corrosion and an intact T-joint with grouted clamp are reproduced separately using an FE model. The experimental and FE modeling results correlate closely, displaying similar failure behaviors and load–displacement responses. Subsequently, a total of 56 FE T-joint models with varying degrees of corrosion on the chord, repaired by grouted clamp, were then analyzed numerically. The corrosion was artificially applied to the chord’s outer surface at depths of 10%, 20%, and 30% of the chord’s thickness. The models also account for variations in joint geometry, dictated by parameters β and γ, which range from 0.565 to 0.678 and from 21 to 28, respectively. Furthermore, grouted clamp’s properties were examined, including sleeve length, thickness, strength, as well as the thickness and strength of the grout, in relation to the complexity of the repair. The grouted clamp demonstrated significant repair capability, increasing the ultimate strength of the corroded joint by up to 2.23 times. Reinforcements that are both thicker and longer substantially enhance the joint’s ultimate strength. However, inappropriate repair construction results in an abrupt termination of the load–displacement curve and a brittle failure phenomenon outside reinforced chord region. Additional weight from the grouted clamp requires reasonable control, and sleeve overlapping ratio should be guaranteed to be greater than 0.7. The joint bearing capacity can be efficiently increased by thicker grouts and sleeves only in ductile failure cases. The confinement effect and mechanism of the grouted clamp in joint deformation were visually analyzed as stress distribution from FE analysis results. Finally, a prediction equation is proposed to estimate the static strength of the repaired joint through regression analysis.

show abstract

Section: Ductilementioning

confidence: 84%

Section: Ductilementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Analysis of Corrosion Tubular T-Joint Repaired with Grouted Clamp

Deng,

Guo,

Zhu

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…The bearing capacity of the CFST column was associated with the strength of the steel, the strength of the concrete, and the design of the steel tube [29][30][31][32]. This study mainly focuses on the development of CFST columns from the perspective of concrete materials.…”

Section: Factors Affecting the Bearing Capacity Performance Of Cfst C...mentioning

confidence: 99%

Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway

Song,

WANG,

Liu

et al. 2024

Preprint

View full text Add to dashboard Cite

The stability of large-span roadway junctions is challenging to control solely through simple passive support and conventional combined support. Therefore, this paper incorporates a novel high strength concrete-filled steel tubular (CFST) column considering the steel tube structure and concrete materials designed to offer adequate support for controlling the rock strata in large-span mining roadway. Subsequently, the CFST column model was designed based on a large-span roadway in a certain mine. The results show that circular-section CFST columns are significantly superior to square-section CFST columns. As the steel tube's wall thickness increases, the structure's bearing capacity significantly increases. Considering both performance and cost, a new concrete material was studied that enhances bearing capacity by increasing its strength and the tightness of contact with steel tubes. Circular steel tubes with an outer diameter of 800 mm and a wall thickness of 24 mm were used as columns, filled with a new type of concrete material, for supporting the roof strata of the large-span mining roadway. After calculating the support forces, it was concluded that CFST columns could effectively bear the stress released by the strata, thereby reducing the displacement of the top rocks, with a notable support effect.

show abstract

Parametric topology optimization design and analysis of additively manufactured joints in spatial grid structures

Chen,

Zuo,

Chen

et al. 2024

Engineering Structures

View full text Add to dashboard Cite

Experimental investigation on compressive behavior of corroded thin-walled CHS T-joints with grout-filled GFRP tube repairing

Cited by 22 publications

References 44 publications

Finite Element Analysis of Corrosion Tubular T-Joint Repaired with Grouted Clamp

Finite Element Analysis of Corrosion Tubular T-Joint Repaired with Grouted Clamp

Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway

Parametric topology optimization design and analysis of additively manufactured joints in spatial grid structures

Contact Info

Product

Resources

About