Stress corrosion parameters for glass with different edge finishing

Abstract

Abstract. The mechanical response of post-tensioned glass beams is explored in this paper. This is done through bending experiments on post-tensioned glass beam specimens with either mechanically anchored or adhesively bonded steel tendons by which a beneficial pre-stress is inflicted on the glass beams. In addition, reference beams with identical geometry but without tendons are tested. From the results of the bending experiments it can be seen that the post-tensioned glass beams reach higher initial fracture loads than the reference glass beams. Furthermore, the post-tensioned glass beams develop a significant post-fracture reserve. From this it is concluded that post-tensioning a glass beam is a feasible concept, which provides increased initial fracture strength and enhanced post-fracture performance.

Finite-element analysis of post-tensioned SG-laminated glass beams with mechanically anchored tendons

“…An overall structural performance in rather close agreement with the corresponding experimental specimens was generally observed (see Fig. 9 and Louter et al 2014), despite the geometrical and mechanical simplifications of the implemented FE models.…”

“…For the stainless steel representative of the top and bottom tendons, an isotropic, idealized elasto-plastic constitutive model was used, with E s = 200 GPa the Young's modulus, ν s = 0.3 the Poisson's ratio, σ y,s = σ u,s = 640 MPa the yielding/failure stress. The yielding/failure input parameters for the stress-strain relationship were derived from tensile experimental tests carried out on small tendon specimens, with σ y,s = σ u,s the stress value corresponding to their failure tensile load (see Louter et al 2014 for further details). An indefinitely linear elastic and isotropic material (E s = 200 GPa, ν s = 0.3) was assigned to the steel devices representing the beam end restraints.…”

“…The current paper, however, focuses on an FE-analysis of post-tensioned glass beams and builds on the experiments described in Louter et al (2014) concerning post-tensioned glass beams with unbonded mechanically anchored stainless steel tendons. The goal of the current paper is to provide a parametric FE study related to the global structural performance of the examined structural typology, including the effects of several mechanical and geometrical parameters like the steel tendon percentage, the level of applied prestressing force and possible initial geometrical imperfections.…”

“…Different post-tensioning strategies are explored, such as tendons integrated within the beam web such as (Bos et al 2004;Louter et al 2014), or tendons placed externally such as (Díaz et al 2011). Also, distinction can be made between tendons placed linearly along the beam web, or tendons that are placed such that they provided an uplift to the beam (Weller and Engelmann 2014;Jordão et al 2014).…”

The TVT Glass Pavilion: Theoretical Study on a Highly Transparent Building Made with Long-Spanned TVT Portals Braced with Hybrid Glass-Steel Panels

“…In particular, active pre-stressed beams showed excellent performance: these include beams with a single [8,9] or double [10] glass web reinforced with external tendons, beams with metallic reinforcement adhesively [11][12][13] or mechanically [14] bonded at the bottom side, and two-sided reinforced glass beams [15,16]. Concerning two-dimensional systems, hybrid solutions are less diffuse than hybrid beams even though glass as a shear frame restraint has been used since the nineteenth century (i.e.…”