ce/papers最新文献

The presented research aims to investigate how the choice of steel grade affects the resistance of T-shaped RHS-to-RHS structural connections, specifically those involving an offset of a brace toward the wall of a chord. To assess the mechanical resistance of these connections, the numerical non-linear FE modelling with ABAQUS software were utilized, which is then validated against results obtained from the analytical model developed by Kalmykova & Wald [1]. Material modelling is carried out for steel grades S355, S460, and S690, using standardized parametric curves as outlined in EN 1993-1-8. It is evident that variations in material properties and the f_y/f_u ratio influence the behavior of these connections, particularly at the 3% deformation level.

Cold-formed steel (CFS) products are extremely versatile and can be used in multiple applications. Recent experimental tests by the authors have shown that the application of composite columns comprising CFS built-up sections filled with lightweight concrete is feasible and can lead to substantial improvements in structural performance. However, there are no design guidelines specifically for these columns. Moreover, the applicability of the available design methods to predict the axial load-bearing capacity of these types of columns has yet to be investigated; this is, therefore, the focus of the present study.

There are differences in the slip factor tests used in international codes. In many cases, different slip factors have been obtained for almost the same surfaces. The existing literature confirmed that the discrepancies could be due to different slip criteria, preload levels, measurement methods, etc. However, the specimens used in each test have not been dimension-ally compared. An analytical comparative study has been carried out comparing the friction disc of seven international codes. It has been verified if the differences found can be compensated with the different preloads indicated in each test. The results confirm that they are not, and that geometric differences are important in explaining the different slip factors.

Circular design strategies such as adaptivity, detachability, and reusability represent new challenges and increased demands on the future-proof buildings sector. To contribute to the circularity and sustainability of the steel construction sector, an innovative solution of beam-column moment-resisting joints with long bolts and short steel elements (links) is proposed, enabling an extension in the service length of existing steel members. This paper assesses the influencing connection parameters (e.g. bolt preload, bolt length and diameter, end plate thickness, etc.) on the moment (flexural) resistance, stiffness, rotation, ductility, and failure modes of base configurations of these joints.

This paper addresses the challenge of reliability estimation in structural engineering, where determining failure probabilities is often uncertain due to insufficient characterization of randomness and scale of design problems. Current approaches, like EN 1990, lack sufficient data for research and simulations, particularly for low failure probabilities (around 10^-4), making Monte Carlo simulations less accurate. The paper introduces Generative Adversarial Networks (GANs) as a solution to generate synthetic data to supplement existing examples. The study applies GANs to assess the reliability of steel portal-framed industrial buildings and evaluate the safety of this structural solution according to Eurocodes.