A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Screws as Shear Connectors
The study presented in this paper aimed to experimentally investigate the shear characteristics of CLT-Concrete composite sections that utilized metal screws as shear connectors. Two study parameters were considered, the screw spacing (150 and 200 mm) and the number of screw rows along the width of the composite section (two and three rows). A total of eight composite sections, each with 600 × 1000 mm shear interface between the CLT panel and concrete layer, were examined under direct shear forces until failure. Four composite sections were tested at concrete age of 14 days, while the other four duplicated sections were tested at 28-day concrete age. Load–displacement relationships at the shear interface of the composite sections were developed for all eight specimens. Experimental results show that shear strength of the composite sections of 28-day concrete age increased by a minimum of 4% and 6% compared to that of the sections of 14-day concrete age that utilized two and three rows of screws, respectively. Also, shear strength increased by slightly less increments when screw spacings reduced from 200 to 150 mm compared to those increments attained due to increasing the number of screw rows from two to three along the section width. In summary, all CLT-Concrete composite sections exhibited considerable shear strength with a maximum failure load of 287 kN attained by the specimen that utilized three rows of screws with the smaller screw spacings (total of 21 screw junctions), whereas the specimen that utilized two rows of screws with the larger screw spacings (total of 10 screw junctions) failed at only 180 kN.
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Screws as Shear Connectors
The study presented in this paper aimed to experimentally investigate the shear characteristics of CLT-Concrete composite sections that utilized metal screws as shear connectors. Two study parameters were considered, the screw spacing (150 and 200 mm) and the number of screw rows along the width of the composite section (two and three rows). A total of eight composite sections, each with 600 × 1000 mm shear interface between the CLT panel and concrete layer, were examined under direct shear forces until failure. Four composite sections were tested at concrete age of 14 days, while the other four duplicated sections were tested at 28-day concrete age. Load–displacement relationships at the shear interface of the composite sections were developed for all eight specimens. Experimental results show that shear strength of the composite sections of 28-day concrete age increased by a minimum of 4% and 6% compared to that of the sections of 14-day concrete age that utilized two and three rows of screws, respectively. Also, shear strength increased by slightly less increments when screw spacings reduced from 200 to 150 mm compared to those increments attained due to increasing the number of screw rows from two to three along the section width. In summary, all CLT-Concrete composite sections exhibited considerable shear strength with a maximum failure load of 287 kN attained by the specimen that utilized three rows of screws with the smaller screw spacings (total of 21 screw junctions), whereas the specimen that utilized two rows of screws with the larger screw spacings (total of 10 screw junctions) failed at only 180 kN.
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Screws as Shear Connectors
Lecture Notes in Civil Engineering
Walbridge, Scott (editor) / Nik-Bakht, Mazdak (editor) / Ng, Kelvin Tsun Wai (editor) / Shome, Manas (editor) / Alam, M. Shahria (editor) / el Damatty, Ashraf (editor) / Lovegrove, Gordon (editor) / Salem, Osama Sam (author) / Virdi, Vikram (author)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Chapter: 33 ; 395-407
2022-04-14
13 pages
Article/Chapter (Book)
Electronic Resource
English
Strength of Shear Connectors in Steel-concrete Composite Beams
| British Library Online Contents | 2007