Axial behavior of circular steel tube with localized penetrating corrosion simulated by artificial notch

Gao, Shan; Wang, Yulin; Guo, Lanhui; Xu, Youchun; Iyama, Jun

doi:10.1016/j.tws.2022.108944

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…Another notable disadvantage is corrosion of steel tubes (Hou et al, 2016;Gao et al, 2020), when exposed to severe environment. Reduction in axial compressive strength with localized penetrating corrosion for concrete filled steel tubes are also reported (Gao et al, 2022). Concrete filled steel tubes have problem of reduced confinement effectiveness at low level of loadings if the tube is also loaded in the axial direction.…”

Section: Introductionmentioning

confidence: 84%

Finite element and analytical modelling of PVC-confined concrete columns under axial compression

Isleem

Jagadesh²,

Ahmad

et al. 2022

Front. Mater.

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Confined concrete in pipes provides a solution for the structures to resist lateral forces and avoids the problems associated with production of confined concrete and lateral reinforcement. To evaluate the influence of PVC pipe on the compressive behavior of concrete filled composite tubes, ABAQUS software was used to simulate 44 concrete filled PVC pipes (CFPT). The influence of internal steel reinforcement, unconfined concrete strength, slenderness ratio, specimen’s size and thickness of PVC tube on failure mode load carrying capacity, and strain of PVC confined reinforced concrete column was studied. The present discussion show that the existing analytical models failed to capture the effect of these parameters. On the other hand, the proposed finite element (FE) models achieve a very good agreement between the experimental and analytical values. The proposed FE model can provide an acceptable portrayal of the CFPT’s response. The response of confined concrete was estimated using trial and error approach and as a result a model for the strain of confined concrete was proposed. The effect of these parameters on the CFPT leads to development of analytical models.

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Section: Introductionmentioning

confidence: 84%

Finite element and analytical modelling of PVC-confined concrete columns under axial compression

Isleem

Jagadesh²,

Ahmad

et al. 2022

Front. Mater.

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“…Local buckling after the yield of the notch region primarily caused the failure of the member, and the closure phenomenon occurred in both types of corrosion notches. The double-peak phenomenon of horizontal notch members after the notch is closed is more conducive to the post-buckling behavior of steel tubes (Wang et al, 2020b;Shan et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Lateral impact response of circular hollow steel tubes with mid-span localized penetrating notches

Huang,

Wang

2023

Front. Mater.

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In this study, 32 numerical models of CHST columns were established in the ABAQUS program to evaluate the effect of mid-span local defects on the impact resistance of circular hollow steel tube (CHST) columns. The simulation studies were conducted from three aspects: notch length, notch angle, and impact energy. The results showed that under a lateral impact load, the mid-span of the CHST column presented global bending failure patterns accompanied by local indentation deformation in the impact region and local buckling deformation at the bottom of the fixed end. Compared with the mid-span indentation displacement of the non-notch model, when the impact velocities were 30 km/h and 60 km/h, the horizontal notch model surpassed the maximum by 29.3% and 36.3%, the oblique notch model surpassed the maximum by 47.8% and 115.6%, and the vertical notch model only increased by 9.7% and 1.1%. The local damage area and impact force time-history curves of the vertical notch model agreed well with those of the non-notch model. Among the three notch angles, the impact plateau values of the vertical notch model and the global bending displacement in the mid-span were least affected by the notch length, notch location, and impact energy. The energy absorption of the CHST column was mainly due to indentation deformation in the mid-span, and the global bending deformation was auxiliary. Compared with the energy absorption ratio (EAR) of the non-notch model, with increased impact energy, the EAR of the vertical notch model increased by 20.2%, 13.5%, and 17.3% on average. The horizontal and oblique notch models decreased by 28.2%, 61.0%, 42.4%, and 29.1%, 62.7%, and 49.3%, respectively. The Rd of all notch models showed an overall upward trend as the impact energy increased, and the Rd of the horizontal notch model increased the most. According to the parametric analysis results, the dynamic flexural capacity prediction formula of the CHST columns section was obtained, considering the influence of notch length, notch angle, and impact energy within the parameter range of this study.

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“…It can be found that most of the studies are focused on the corrosion damage in concrete-filled steel tubes (Chang et al 2013;Guo et al 2020;Han et al 2014;Yuan et al 2018), H-section columns (Xu et al 2019b), or concrete bridge piers (Afsar Kashani 2020, 2022). However, there are few studies on seismic performance of the corroded steel CHS bridge piers (Gao et al 2022;Wang et al 2020b;Wang et al 2020c;Wei et al 2021). Therefore, it is necessary to investigate the failure mechanism and ultimate strength of the corroded steel CHS bridge piers under the lateral cyclic loads.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance Evaluation of Steel Circular Hollow Section Bridge Piers with Corroded Ends

Zhang

Wen

Han

et al. 2022

Preprint

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Steel circular hollow section (CHS) bridge piers have been widely used in the engineering practices. However, end corrosion is one of the most common damages to steel bridge piers, leading to degradation of seismic performance and changing of failure modes. This paper investigates the seismic performance of the corroded steel CHS bridge piers and proposes a method to predict its lateral ultimate strength under the transverse cyclic loads. Firstly, the multi-scale finite element (FE) models of the CHS steel bridge pier are developed considering both the local buckling and the end corrosion, which are calibrated against the previous test results. Subsequently, the effects of the characteristic parameters (i.e., the corrosion conditions and the column parameters) on the failure modes and the horizontal ultimate strengths of the corroded steel CHS bridge piers are investigated, and then the sensitivity of the parameters is quantified using the Sobol method. Finally, a method is presented for estimating the ultimate strength of the end corroded steel CHS bridge piers under the horizontal cyclic loads. Results show that the end corroded bridge piers exhibit more significant stress concentration when comparing with the uncorroded bridge piers. The buckling half-wavelength is influenced by corrosion parameters, and the buckling position changes. The ultimate strengths of end corroded bridge piers are reduced, which is more sensitive to the corrosion rate. The proposed theoretical method to predict the ultimate strengths of corroded steel CHS bridge piers is accurate enough with errors less than 10%.

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Axial behavior of circular steel tube with localized penetrating corrosion simulated by artificial notch

Cited by 12 publications

References 18 publications

Finite element and analytical modelling of PVC-confined concrete columns under axial compression

Finite element and analytical modelling of PVC-confined concrete columns under axial compression

Lateral impact response of circular hollow steel tubes with mid-span localized penetrating notches

Seismic Performance Evaluation of Steel Circular Hollow Section Bridge Piers with Corroded Ends

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