Abstract
This study proposes an effective steel frame modular system and evaluates the structural performance of its beam-column connection through experimental and analytical work. The new steel frame modular system utilizes the blind bolts, which allow free access to the structural members of the closed cross-section. In addition, the new modular system is designed such that the strength of its beam members is considerably lower than that of its column members to implement the strong column-weak beam concept. In order to investigate the effectiveness of the proposed modular beam-column connection, two types of specimens were designed and tested. One of the two specimens has four knee brace members to increase the bending stiffness of the connection, while the other does not have these components. The applied load versus displacement curves are plotted for the two specimens, and their failure modes are identified. Finally, a simplified analytical model for the modular beam-column connection is proposed, and its effectiveness is validated by performing its push-over analysis and comparing its results with the test results.
Highlights
Modular construction is an industrialized construction system, of which process mainly consists of the factory production of pre-engineered building units, the delivery of the fabricated units to the construction site and their fast assembly [1,2,3,4]
In addition to the core structural members shown in the figure, the unit modules assembled on the construction site include wall furnishings, as well as a concrete floor. the unit module in the long span direction, while it is reinforced by knee braces members added are addedare to the unittomodule in the long span direction, while it is reinforced by knee braces at the at the beam-column in the short span direction
As an alternative, we propose the specimen setup, shown in Figure 5c, where a sub-column member is added to the end of the ceiling beam and the two horizontal beam members are loosely connected by a vertical link plate
Summary
Modular construction is an industrialized construction system, of which process mainly consists of the factory production of pre-engineered building units, the delivery of the fabricated units to the construction site and their fast assembly [1,2,3,4]. Sci. 2019, 9, 1929 welding [12] is conceivable, it may cause fire during this process, and is not frequently used on construction site Another critical issue with the development of effective modular construction is to create a modular structural system that is based on the so-called strong column-weak beam concept [11]. Its main idea is to install a Vierendeel opening between steel truss moment frames and use it as an effective energy dissipation device, the strong column-weak beam behavior can be guaranteed This concept requires complicated connection details, which are difficult to be implemented in the assemblage process of modular units, a simpler solution than this needs to be developed. Considering all of the issues discussed above, this study proposes an effective steel frame modular system and evaluates the structural performance of its beam-column connection through experimental and analytical work.
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.
