Abstract
Recently, interest in using precast concrete (PC) modules has increased due to their better seismic performance than steel modules. However, they must be joined by additional elements to ensure structural integration between the modules. The essential aim of the precast concrete module is to ensure structural performance with appropriate connection methods. However, the technical problem of connecting PC modules still needs to be improved. This study proposed a PC modular beam system for improved structural and splicing performance, and simple construction. This modular system consisted of modules with steel plates inserted to improve integrity of modules, ease of construction, and low cost. The structural performance of the proposed PC modular beam system was evaluated by flexural test on one reinforced concrete (RC) beam specimen consisting of a monolithic beam, and two PC specimens with the proposed modular system. The results demonstrated that the proposed PC modular beam system achieved approximately 80% of the structural performance compared to the monolithic specimen, with approximately 1.3-fold greater ductility.
Highlights
Modular structures are designed to meet various building needs and are assembled on-site after factory production; their use is increasing due to their ease of construction and economic and environmental advantages [1,2]
In the PCM-A and PCM-B which connected to the two precast concrete (PC) modules, cracks occurred at the bottom of the connection while the flexural cracks were increasing, and they subsequently progressed along the shape of connection to the compression zone
The structural performance of a beam with joints should be similar to a monolithic beam, and it can be confirmed by crack patterns
Summary
Modular structures are designed to meet various building needs and are assembled on-site after factory production; their use is increasing due to their ease of construction and economic and environmental advantages [1,2]. Most modular buildings are constructed using precast concrete (PC) or steel. The studies have focused on the splicing methods between vertical and horizontal members to ensure the seismic performance of modular buildings. The PC modular horizontal members have mainly been used in bridge construction due to their superior quality control and the advantages of low life-cycle cost, ease of construction, and time saving [12]. Such PC members in bridges typically use shear keys on connections to increase the shear stiffness and shear capacity between the modules. To evaluate the structural performance, flexure tests were conducted on one monolithic reinforced concrete beam specimen and two proposed PC modular beam specimens
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
