Timber Beam Bearing Reinforcement with GFRP Glued-In Plates: Strength and Hydrothermal Effects

2017 ◽  
Vol 29 (2) ◽  
pp. 04016199 ◽  
Author(s):  
Francisco Arriaga ◽  
Jose L. Fernandez-Cabo ◽  
Jose R. Aira
Keyword(s):  
Timber Beam

Experimental and numerical analysis of the unreinforced and reinforced notched timber beam by a screw

2018 ◽  
Vol 60 (3) ◽  
pp. 26-32
Author(s):  
Van Dang Tran ◽  
Dong Tran ◽  
Marc Oudjene ◽  
◽  
◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Timber Beam

Experimental study of moment carrying behavior of typical Tibetan timber beam-column joints

2021 ◽  
pp. 136943322110015
Author(s):  
Ting Guo ◽  
Na Yang ◽  
Huichun Yan ◽  
Fan Bai
Keyword(s):  
Bending Moment ◽  
Structural Performance ◽  
Test Results ◽  
Timber Beam ◽  
Rotational Stiffness ◽  
Trilinear Model ◽  
Column Joint ◽  
Loading Tests ◽  
The Moment ◽  
Relationship Of

This study aimed to investigate the moment carrying behavior of typical Tibetan timber beam-column joints under monotonic vertical static load and also evaluate the influence of length ratio of Gongmu to beam (LRGB) and dowels layout on the structural performance of the joint. Six full-scale specimens were fabricated with same construction but different Gongmu length and dowels position. The moment carrying performance of beam-column joints in terms of failure mode, moment resistance, and rotational stiffness of joints were obtained via monotonic loading tests. Test results indicated that all joints are characterized by compressive failure perpendicular to grain of Ludou. Additionally, it was found that greater LRGB leads to greater initial rotational stiffness and maximum moment of the joint by an increase of restraint length for beam end; however, offsetting dowels toward column resulted smaller stiffness and ultimate bending moment of joints, particularly, offsetting Beam-Gongmu dowels toward column changed the moment-rotation curve pattern of the beam-column joint, accompanied by a hardening stiffness at last phase. Furthermore, a simplified trilinear model was proposed to represent the moment-rotation relationship of the typical Tibetan timber beam-column joint.

scholarly journals Methodology for inspection of wood pathologie using ultrasonic pulses

CERNE ◽  
2012 ◽  
Vol 18 (3) ◽  
pp. 479-486 ◽  
Author(s):  
Edgar Vladimiro Mantilla Carrasco ◽  
Amanda Rocha Teixeira
Keyword(s):  
Nondestructive Testing ◽  
Historic Buildings ◽  
Structural Elements ◽  
Timber Beam ◽  
Ultrasound Technique ◽  
Glued Laminated Timber ◽  
Overall Stability ◽  
Complementary Techniques ◽  
Wooden Structures

Awareness has been on the rise on the part of society about the importance of wooden structures, in particular historic buildings. This concern is reflected in continued maintenance of historic heritage and has been increasingly leading professionals working in the field of wooden structures to seek improved techniques for inspection of such structures. Methods involving nondestructive testing (NDT) are the most recommended for inspection, as they do not affect the relevant architecture and thus help maintain the integrity and originality of the building. Among the various existing NDT methods, a widespread and promising option is the ultrasound technique. This work introduces a methodology for inspection of wooden structural elements using ultrasonic pulses. The methodology was applied to a glued laminated timber beam with signs of decay on its interior. Ultrasound results helped map the damaged areas of the beam on a plane by using isochromatic patterns. The contribution of this work is a methodology to help investigate wood pathologies which, in combination with other complementary techniques, will allow more accurate and reliable evaluations of wooden structures, avoiding unnecessary replacement of sound structural elements mistakenly presumed to be damaged, or else ensuring maintenance of extremely deteriorated elements that would otherwise compromise the overall stability of the structure.

Fire resistance tests on timber beam-to-column shear connections

2016 ◽  
Vol 7 (1) ◽  
pp. 41-57 ◽  
Author(s):  
Pedro Palma ◽  
Andrea Frangi ◽  
Erich Hugi ◽  
Paulo Cachim ◽  
Helena Cruz
Keyword(s):  
Fire Resistance ◽  
Negative Influence ◽  
Fire Behaviour ◽  
Timber Beam ◽  
Content Type ◽  
Experimental Programme ◽  
Shear Connections ◽  
Wide Range ◽  
Full Scale Tests ◽  
Resistance Tests

Purpose This paper aims to present the results of an extensive experimental programme on the fire behaviour of timber beam-to-column shear connections, loaded perpendicularly to the grain. Design/methodology/approach The experimental programme comprised tests at normal temperature and loaded fire resistance tests on beam-to-column connections in shear. Twenty-four full-scale tests at normal temperature were performed covering nine different connection typologies, and 19 loaded fire resistance tests were conducted including 11 connections typologies. Findings The results of the fire resistance tests show that the tested typologies of steel-to-timber dowelled connections reached more than 30 and even 60 minutes of fire resistance. However, aspects such as a wider gap between the beam and the column, reduced dowel spacing, and the presence of reinforcement with self-drilling screws all have a negative influence on the fire resistance. Originality/value The experimental programme addressed the fire behaviour of timber beam-to-column shear connections loaded perpendicularly to the grain in a systematic way testing a wide range of common connection typologies significantly enlarging their experimental background.

scholarly journals Behaviour of Post-Tensioned Kempas Timber Beam with Two Tendon Types

2020 ◽  
Vol 713 ◽  
pp. 012022
Author(s):  
W mushina ◽  
D Y Eng Chuan ◽  
j mushina ◽  
N Abd Ghafar ◽  
K Boon
Keyword(s):  
Timber Beam ◽  
Post Tensioned
Sign in / Sign up

Export Citation Format

Share Document