Abstract
Composite members have been widely used in the construction of medium- and high-rise buildings. The results of the development of a new structural member by experimental investigation of the flexural behavior of hollow composite beams are presented in this paper. This research aims to exploit the properties of composite sections and their strength in developing a new approach for overcoming the problems of service pipes in buildings. A hollow steel section encased fully in concrete is used to form a composite hollow beam. The structural benefit provided by the steel section (composite part) is adopted to increase the stiffness of the member. The hollow part is employed to provide services and economic benefits by reducing the amount of expensive ultra-high-performance concrete (UHPC) used and decreasing the self-weight of the member. The flexural strength of 11 UHPC beams is tested under two-point loads. The variables in this investigation include the type of hollow core mold material and the size, location, and shape of steel hollow sections in the middle and tension zones of the cross-section. Experimental results are compared and discussed. The tested results show that the flexural capacity and stiffness of the UHPC-encased steel hollow beams are 109% and 23.5% higher than those solid beams, respectively.
Highlights
Studies on structural engineering aim to search for materials whose properties can be effectively used in construction
Recent studies have focused on the use of a composite member composed of a steel I-section embedded in the middle of the concrete section, as shown in Figure 1b, to take advantage of the bonding between the steel and surrounding concrete and to allow them to act as one unit
Literature review On the Composite Sections: Through a literature review, we found that a composite hollow beam that consists of a hollow steel section embedded in the concrete section has not been studied recently
Summary
Studies on structural engineering aim to search for materials whose properties can be effectively used in construction. Given that no single material can satisfy all structural requirements, two or more materials are combined to take full advantage of their properties and obtain one structural element with desirable properties. The advantages of different materials are combined to produce a member with high carrying capacity known as a composite member. Recent studies have focused on the use of a composite member (composite-encased beam) composed of a steel I-section embedded in the middle of the concrete section, as shown, to take advantage of the bonding between the steel and surrounding concrete and to allow them to act as one unit Recent studies have focused on the use of a composite member (composite-encased beam) composed of a steel I-section embedded in the middle of the concrete section, as shown in Figure 1b, to take advantage of the bonding between the steel and surrounding concrete and to allow them to act as one unit
Sign-in/Register to view highlights & summary 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.
