Concrete columns

This article conducts an exhaustive investigation into the utilization of machine learning (ML) methods for forecasting the maximum load capacity (MLC) of circular reinforced concrete columns (CRCC) using Fiber-Reinforced Polymer (FRP). Extreme Gradient Boosting (XGB) algorithm is combined with novel metaheuristic algorithms, namely Sailfish Optimizer and Aquila Optimizer, to fine-tune its hyperparameters.

18p viengfa 28-10-2024 2 2   Download

The Axial Load Capacity (ALC) of Concrete-Filled Steel Tubular (CFST) structural members is regarded as one of the most crucial technical factors for the design of these composite structures.

17p viengfa 28-10-2024 2 2   Download

This paper presents a new technique to design RC columns of the rectangular section, subjected to axial compression and uni- or biaxial bending. Distributed bars around the perimeter are considered as an equivalent thin tube.

6p vibecca 01-10-2024 2 1   Download

This paper reports an experimental programme to study the effectiveness of stirrup detailing on the structural performance of columns having small sectional dimensions that are common in low-rise building structures.

9p vifilm 24-09-2024 2 1   Download

This paper presents a numerical analysis of the seismic behavior of square concrete filled steel tubular (CFST) columns. Finite element analysis (FEA) models in ABAQUS software were used to simulate a series of columns subjected to axial compression and cyclic lateral loading.

14p vifilm 24-09-2024 2 1   Download

In this paper, therefore, given experimental data STCC columns, the authors used four useful AI models to estimate the axial strength in the STCC columns. Particularly, artificial neural networks (ANNs), support vector regression (SVR), linear regression (LR), and M5P were applied in this study.

14p vifilm 24-09-2024 2 1   Download

Strengthening of reinforced concrete (RC) columns is needed when the actual load-carrying capacity of the columns does not reach the required level due to either structural deterioration or increasing acting loads. This experimental study aims to evaluate the strengthening effect on the eccentrically-compressed RC columns using Carbon fiber reinforced polymer (CFRP) sheets, that confine around the column cross-section.

10p vifilm 24-09-2024 3 1   Download

This study presents a unified approach to simulate the behavior of rectangular concrete-filled steel stub columns incorporating high strength and ultra-high strength materials subjected to concentric axial compression.

14p vifilm 24-09-2024 6 1   Download

Beam-column joints play an important role, affecting the earthquake response of reinforced concrete (RC) frames. This paper introduces the results of experimental research on the failure and deformation of the joints, as well as the causes of these behaviors.

8p viyoko 24-09-2024 4 1   Download

This paper addresses the strength and deformation capacity of slender columns retrofitted by externally bonded Carbon Fiber-Reinforced Polymers (CFRP) subjected to seismic loading. The behaviour of RC columns depending on the CFRP confinement (carbon CFRP jacket) and on flexural reinforcement (carbon plates) was analysed by a nonlinear finite element method based on multilayer shell element and multifiber beams with plasticity and damage models.

7p viyoko 24-09-2024 2 1   Download

The paper presents experimental results and structural analysis of reinforced concrete (RC) columns made of recycled aggregate concrete (RAC) and natural aggregate concrete (NAC) under concentric compressive load.

11p vifaye 20-09-2024 3 1   Download

This paper presents an experimental study on the effect of externally bonded carbon fiber-reinforced polymer (CFRP) sheets on the punching shear behavior of interior slab-column connections.

9p vifaye 20-09-2024 4 2   Download

This paper presents an experimental study of corrosion-damaged reinforced concrete (RC) columns under eccentric compression. Three RC concrete column specimens, identical in geometry, reinforcing steel bars, and concrete mix, were fabricated.

11p vifaye 20-09-2024 4 1   Download

This article evaluates and compares the punching shear behaviour of unbonded prestressed concrete (UPC) slab - concrete-filled steel tube (CFT) column connections/joints with that of reinforced concrete (RC) slab – CFT column connections. The experimental program was carried out on five large-sized samples, including three UPC slab - CFT column samples and two RC slab - CFT column samples.

17p vifaye 20-09-2024 3 1   Download

Structural steel pipes have been applied commonly in the bridge construction for foundations or piers with many advantages such as large bending capacity, high shear resistance, and rapid construction. However, site welded joints may face critical technical matters which need to be considered for steel pipe piers during construction stage.

13p vifaye 20-09-2024 2 1   Download

This article introduces a Gaussian process regression using machine learning approach to predict the behavior of reinforced fly ash concrete (RFAC) columns in the form of axial load (N) - midheight lateral displacement (∆) relation curve.

14p vifaye 20-09-2024 4 2   Download

This paper presents a numerical analysis of the compressive behavior of short circular concrete filled steel tubular (CFST) columns having high to ultra-high strength materials under different compression loading cases.

16p vifaye 20-09-2024 4 1   Download

This article introduces technical specifications and calculation instructions for fire resistance of uniaxial bending rectangular reinforced concrete (RC) columns under 4-side heating by standard fire.

14p vifaye 20-09-2024 1 1   Download

Once the mechanical properties of printed TPU are characterised, a novel, low cost, and environmentally friendly method for concrete casting using printed TPU moulds is proposed in this thesis. Additively manufactured TPU mould is developed to cast complex concrete structures. A planar topologically optimized cantilever and a free-form 3D column are cast using the proposed TPU mould. Good surface quality is obtained for the cast concrete elements, and the moulds can be reused many times after cleaning.

98p runthenight04 02-02-2023 8 4   Download

This paper presents a study on the structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab. The structural performance was investigated in terms of punching shear capacity of the reinforced concrete flat slab.

12p tohitohi 19-05-2020 18 1   Download