Flexural Behavior of Prestressed Steel-Concrete Composite Members with Discontinuous Webs

Oh, Jae Yuel; Lee, Deuck Hang; Cho, Sang Hum; Kang, Hye Won; Cho, Hae Chang; Kim, Kang Su

doi:10.1155/2015/278293

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…The proper mesh size was determined considering the mesh sensitivity and analysis efficiency and they were 50 mm and 140 mm for PC unit and topping parts, respectively, where the number of mesh elements was 25,729 and 1183, respectively. The concrete section was modelled by linear tetrahedral 3D solid elements (type C3D4) and the reinforcing bars were modelled by two-node 3D truss elements (type T3D2) [12,18]. The boundaries were modelled to simulate the simply supported conditions.…”

Section: Finite-element Analysis Considering the Inclination Angle Ofmentioning

confidence: 99%

Shear Performance of Optimized-Section Precast Slab with Tapered Cross Section

Han

Joo

et al. 2018

Sustainability

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The optimized-section precast slab (OPS) is a half precast concrete (PC) slab that highlights structural aesthetics while reducing the quantity of materials by means of an efficient cross-sectional configuration considering the distribution of a bending moment. However, since a tapered cross section where the locations of the top and bottom flanges change is formed at the end of the member, stress concentration occurs near the tapered cross section because of the shear force and thus the surrounding region of the tapered cross section may become unintentionally vulnerable. Therefore, in this study, experimental and numerical research was carried out to examine the shear behaviour characteristics and performance of the OPS with a tapered cross section. Shear tests were conducted on a total of eight OPS specimens, with the inclination angle of the tapered cross section, the presence of topping concrete and the amount of shear reinforcement as the main test variables and a reasonable shear-design method for the OPS members was proposed by means of a detailed analysis based on design code and finite-element analysis.

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Section: Finite-element Analysis Considering the Inclination Angle Ofmentioning

confidence: 99%

Shear Performance of Optimized-Section Precast Slab with Tapered Cross Section

Han

Joo

et al. 2018

Sustainability

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“…In the CWPS composite beam, the prestressing method was introduced for the active control of vertical deflection, and the steel webs were fabricated in a corrugated shape to maximize the accordion effect to enhance the introduction efficiency of prestress. In author's previous studies, it was verified that CWPS composite beams could provide good structural performance at room temperature [2][3][4][5]. For these reasons, as shown in Figure 2, the corrugated webs were applied to other types of composite girders while the key concepts are the same.…”

Section: Introductionmentioning

confidence: 97%

“…However, since the demand for long-span structures over 10 m in span length has been increasing in the building construction industry, the deflection control performance required of such a long span structure may not be fulfilled with a typical SF system. To overcome such structural limitations of the existing SF system, corrugated webbed prestressed (CWPS) composite beams were developed in the authors' previous studies [2][3][4][5], and their structural performances at ambient temperature were verified by tests and analyses. As shown in Figure 1, the proposed CWPS composite beam system has been applied to several building structures.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Prestressed Composite Members with Corrugated Webs Exposed to Fire

et al. 2015

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In this study, to assess the fire performances of corrugated webbed prestressed (CWPS) composite beams exposed to fire, full-scale fire resisting tests were carried out, and fire-resisting behavioural responses of the test specimens were analyzed and compared with those obtained from nonlinear finite element analyses. Key test variables were the cover thickness of the fire protection material applied to the bottom flange of corrugated webbed steel beams, which was directly exposed to fire, and the shapes of corrugated webs. All the composite beams with fire protection material covers exposed to standard fire showed good fire-resisting capacities with fire ratings over 3 h and in particular, CWPS composite beams with relatively thin fire protection material cover thickness, compared with the non-prestressed slim-floor composite beam, satisfied the required fire performance criteria in ISO 834 standard and Eurocode. Additionally, the test results showed that the shape of corrugated webs used in CWPS composite beam specimens could have a great impact on their fire-resisting performance. The nonlinear finite element analyses performed in this study accurately estimated the overall behaviours of test specimens and especially assessed the effects of the shape of the corrugated web on the temperature distributions and fire resistance performances of CWPS composite beams appropriately.

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“…The reason for increased concern is a statement that the combination of materials can improve structural performance, decrease the cost, and give better resistance to corrosion and fire compared with the traditional reinforced concrete or steel structures [1]. There are different methods of how combinations can be applied to structural members such as composite beams, slabs, columns, frames, and joint regions, thus each method is analyzed separately under different load types [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Adam et al [3] conducted an experimental study of strengthened beam-column joints subjected to axial load, and Guo et al [5] studied steel plate shear wall systems consisting of concrete and steel in composite frames.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of steel-concrete composite connection with prefabricated permanent steel form

Ju¹,

Lee²,

Choi³

2022

JACF

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Composite structural members are widely used due to superior performance to traditional structural mem-bers consisting of either concrete or steel material. This study proposes steel-concrete composite beam-column connections utilizing prefabricated permanent steel form and presents a finite element analysis to verify the structural performance of the system, which is based on the experimental data conducted under cyclic loading protocol simulating seismic action. Five different design specimens are covered where the key variables include the asymmetric section of the steel beam, the type of the column, and the detail of longitudinal reinforcement placement. The specimens were modeled in ABAQUS with solid and truss elements for concrete and steel parts, respectively. In addition, the nonlinear material behavior of the concrete was considered in the model where the concrete damaged plasticity model was assigned. The interaction between concrete and steel was also investigated to capture the structural behavior of the specimens measured from the test. The analysis showed that the concrete section improves the structural performance of the composite beam while preventing the steel beam from bucking. The finite element analysis was not capable of catching the strength degradation at the ultimate state but provided reliable results with overall moment-story drift behavior.

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Flexural Behavior of Prestressed Steel-Concrete Composite Members with Discontinuous Webs

Cited by 7 publications

References 15 publications

Shear Performance of Optimized-Section Precast Slab with Tapered Cross Section

Shear Performance of Optimized-Section Precast Slab with Tapered Cross Section

Structural Performance of Prestressed Composite Members with Corrugated Webs Exposed to Fire

Finite element analysis of steel-concrete composite connection with prefabricated permanent steel form

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