Seismic performance modeling of concrete-filled steel tube bridges: Tools and case study

Stephens, Max T.; Lehman, Dawn E.; Roeder, Charles W.

doi:10.1016/j.engstruct.2018.03.019

Cited by 34 publications

(16 citation statements)

References 10 publications

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“…The mechanical performance of concrete has also been studied by many scholars, which shows that the bearing capacity and deformation of the structure are improved effectively when the concrete is in the state of triaxial compression (Ahmed et al, 2020;Wang et al, 2020;Wei et al, 2019a;Zheng & Wang, 2017). Concurrently, due to the superior tensile performance and energy dissipation of steel, the concrete-filled steel tube (CFST) column structure began to be investigated and applied in the middle of the nineteenth century (Stephens et al, 2018;Wang et al, 2022;Wei et al, 2022a;Zeng et al, 2017;Zong et al, 2005). The earliest engineering application of this structure was the pier of Severn Railway Bridge built in 1879 in the UK (Bradley & Roberts, 2010).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Study of Concrete-Filled Steel Tube Columns Strengthened by FRP/Steel Strips Under Axial Compression

Shi-chang

Miao

Wei

et al. 2023

Int J Concr Struct Mater

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Concrete-filled steel tube (CFST) columns are widely used in civil engineering because of their excellent bearing capacity; however, the reinforcement of CFST columns lacks effective measures. To strengthen CFST columns quickly and effectively, two methods, namely, winding FRP (fiber reinforced polymer) or steel strips, were explored in this work. Two unconfined CFST columns, eight FRP-strengthened CFST columns and four welded steel strip-strengthened CFST columns were manufactured and tested. The failure modes and axial load–strain curves of all specimens under compression load were concluded and compared. The effects of the primary parameters, such as FRP layers (1, 2, 3 and 4 layers) and steel strip thickness (3.0 and 6.0 mm), on the bearing capacity and deformation capacity were also investigated. The ultimate load of CFST columns increased from 28.72 to 64.16% after being confined by FRP with one to four layers. The ultimate load of the welded steel strip-strengthened CFST column with 3.0 mm steel strips and 6.0 mm steel strips increased by 28.46% and 49.82%, respectively, compared with the unconfined CFST column. Thus, the increase in FRP layers and steel strip thickness can markedly improve the compressive behavior of the FRP/welded steel strip-strengthened CFST columns. The cost performance of the two different reinforcement methods also showed that the cost of the welded steel strip-strengthened CFST column is nearly 40% of that of the FRP-strengthened CFST column when the same strengthening effect was obtained, which indicated that the welded steel strip-strengthened CFST column is more cost-efficient than CFST columns confined by FRP. Finally, six existing models for the ultimate load of FRP-strengthened CFST columns were presented and evaluated. From the evaluation results, the Zhang et al.’s model, Lu et al.’s model and Hu et al.’s model for FRP-strengthened CFST columns were shown to provide the best applicability and accuracy. Based on the Mander et al.’s model, a model for the ultimate load of welded steel strip-strengthened CFST columns was proposed and evaluated. The proposed model can accurately predict the ultimate load of welded steel strip-strengthened CFST columns.

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Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Study of Concrete-Filled Steel Tube Columns Strengthened by FRP/Steel Strips Under Axial Compression

Shi-chang

Miao

Wei

et al. 2023

Int J Concr Struct Mater

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“…Many researchers have studied the compressive response of CFSTs, using experimental [6,7] and numerical [8,9] methods. Recent studies are more focused on the fire [10,11] and seismic [12] performances of CFSTs. Other researchers have investigated the application of sustainable material, such as recycled-aggregate, in the concrete infill [13,14].…”

Section: Introductionmentioning

confidence: 99%

Compressive behaviour of novel timber-filled steel tubular (TFST) columns

Karampour

Bourges

Bismire

et al. 2020

Construction and Building Materials

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“…Two important considerations in bridge seismic studies are (i) ensuring satisfactory bridge performance during an earth quake and (ii) maintaining the operation of "lifeline engineering" (Rajeev, John Peter, and Varkey 2017). Therefore, it is very crucial to study the natural vibration characteristics, as well as the seismic properties of concrete-filled steel structures (Yan, Li, and Chen 2011;Montejo, González-Román, and Kowalsky 2012;Bi, Hao, and Ren 2013;Yuan, Dang, and Aoki 2014;Stephens, Lehman, and Roeder 2018). The concrete-filled steel tube arched chord truss bridges offer advantages, such as flexible component layout, aesthetic modeling, large leapfrogging ability, and excellent mechanical properties, and thus, have been applied in bridge engineering over the past decades, its shape is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement

Chen

Wang

et al. 2020

Journal of Asian Architecture and Building Engineering

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Seismic performance modeling of concrete-filled steel tube bridges: Tools and case study

Cited by 34 publications

References 10 publications

Experimental and Theoretical Study of Concrete-Filled Steel Tube Columns Strengthened by FRP/Steel Strips Under Axial Compression

Experimental and Theoretical Study of Concrete-Filled Steel Tube Columns Strengthened by FRP/Steel Strips Under Axial Compression

Compressive behaviour of novel timber-filled steel tubular (TFST) columns

Comparative analysis of seismic performance of 122-meter long concrete-filled steel tube arched chord truss bridge before and after reinforcement

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