Experimental and numerical analysis of cold-formed steel floor trusses with concrete filled compression chord

GÜLDÜR, Hazal; Baran, Eray; Topkaya, Cem

doi:10.1016/j.engstruct.2020.111813

Cited by 7 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Güldür et al [24] investigated a CFS floor truss with concrete-filled compression chords to show how external loading forces act on the trusses, and how they induce axial strain and bending strain on the chord elements. The total number of chord strains at the most critical cross-section can be calculated as the sum of the strains due to the two effects mentioned.…”

Section: Literature Overviewmentioning

confidence: 99%

Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams

et al. 2023

View full text Add to dashboard Cite

This paper investigates the bending resistance of an innovative lightweight composite floor system, LWT-FLOOR. The system consists of built-up cold-formed steel elements that are spot-welded and connected to the concrete slab using demountable shear connectors. As the system under investigation is new, the existing standards do not provide guidelines for calculating its bending resistance. This paper gives an overview of different analytical approaches and a comparison of calculated results using bending capacities from the numerical parametric study. Within the numerical parametric study, the influence of the height of the steel beam, the type and degree of shear connection, the connection between the steel elements, and the thickness of the corrugated web used for the bending capacity are investigated. Numerical results for the full shear connections resulted in lower bending capacities than the analytically calculated plastic bending resistances. However, numerically obtained bending capacities for partial shear connections were found to exceed the calculated characteristic non-linear bending resistances and bending resistances for partial shear connections. The obtained results will comprise the basis for further experimental tests, which will support the search for an optimal analytical approach for the bending resistance of the proposed composite system.

show abstract

Section: Literature Overviewmentioning

confidence: 99%

Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Due to the stability loss of thin-walled profiles used for truss members, scientists proposed to infilled concrete in selected truss members. Guldur, Baran and Topkaya [20] presented experimental and numerical study of CFS floor trusses made of lipped channel sections with the compression chord member filled with concrete. At first seven full-scale CFS floor trusses were experimentally tested.…”

Section: State Of the Artmentioning

confidence: 99%

Analysis of Failure Mechanism in Joints with Positive Eccentricity in CFS Truss

2021

View full text Add to dashboard Cite

The paper presents studies concerning the load-bearing capacity of truss joints with a positive eccentricity resulting from the arrangement of geometric members and the failure mechanisms observed in the joints. Based on the previously conducted experimental study, a numerical model of the tested fragment of the CFS truss with eccentricity in the joint was created and validated. All structural details of the tested truss and the loading method consistent with the experiment were taken into account. The results obtained from a uniaxial tensile tests on a steel samples and results estimated during destructive tests carried out on a full-scale of research model were taken into account in validation of the numerical model. Next, appropriate numerical analyses were carried out and parameters such as the eccentricity size in the joint and the wall thickness of sections (t = 1.0, 1.5 and 4.0 mm) were modified. In the range of the studied wall slenderness from λ > 70 (1.0 mm and 1.5 mm thick), it was confirmed that the resistance of truss joints made from CFS open cross-sections with a positive eccentricity, is greater than the resistance that results from known methods of steel structure dimensioning.

show abstract

“…Liang et al investigated the structure-borne noise characteristics and mitigation strategies associated with long-span steel truss cable-stayed bridges in urban rail transit systems, caused by train operations 7 . Güldür et al focused on studying the bending property of cold-formed steel floor trusses constructed from lipped channel sections with concrete-filled compression chord member, and found the concrete infill within the compression chord member not only inhibited chord local/distortional buckling but also significantly enhanced the truss's performance by increasing its stiffness and load capacity 8 . Zhang et al analyzed the effects of partition walls and strongbacks on the vertical vibration performance of full-scale 12m span tooth plates affixed to wood truss joist floors, and found they could efficiently diminish vertical displacement and acceleration at the floor's center under pedestrian load while augment the natural frequency 9 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study and finite element analysis of heavy-duty escalator truss under full load conditions

Li,

Cao,

Bao

et al. 2024

Sci Rep

View full text Add to dashboard Cite

The performance of the heavy-duty escalator truss greatly affects the stability and service life of the whole escalator system, and the manufacturing cost of truss structure accounts for more than 1/5. Thus, how to design the truss structure reasonably is a pivotal issue drawing the attention of numerous engineers and researchers. In this work, the experimental research of heavy-duty escalators under full load conditions were performed in terms of the end restraints, the docking port clearances, and the deflection. Based on the experimental results, the three-dimensional simulation model of truss structure was created, and the influences of various factors such as the internal chamfer of truss member, the lower deviation of truss member, the dead weight of escalator, and the pretension force of each bolt at the docking port were analyzed and quantified. Finally, the finite element model which can almost completely characterize the actual structure was obtained with slight difference. The conclusions drawn in this work provide the basis for the efficient design, correct simulation, low cost production and rapid installation of the heavy-duty escalator truss.

show abstract

Experimental and numerical analysis of cold-formed steel floor trusses with concrete filled compression chord

Cited by 7 publications

References 21 publications

Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams

Numerical Study on the Bending Resistance of Lightweight Built-Up Steel-Concrete Composite Beams

Analysis of Failure Mechanism in Joints with Positive Eccentricity in CFS Truss

Experimental study and finite element analysis of heavy-duty escalator truss under full load conditions

Contact Info

Product

Resources

About