Published on: 2026-09-29
Source: Saint Petersburg State University of Architecture and Civil Engineering –
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At the Department of Construction Production Technology of the Saint Petersburg State University of Architecture and Civil Engineering, a technology for creating node connections of load-bearing building elements with a steel frame has been developed. The research was conducted by a senior lecturer at the Department of Construction Production Technology of SPbGASU. Mkrtich Tonakanyan.
Within the framework of the work, a technology for a “pocket-type” joint device of a steel column with a rafter truss is proposed. The development is aimed at improving installation processes during the construction of low-rise buildings with a steel frame and reducing the labor intensity of connecting load-bearing structures.
In the construction of such buildings, the installation of prefabricated structures is one of the key technological processes: the quality of work, construction timelines, and costs depend on the chosen installation methods, joint devices, as well as the tools, measurement, and alignment means. Therefore An important task is the development of solutions that ensure installation accuracy and compliance of the constructed structures with the requirements of current regulations..
The study analyzed existing technologies for connecting steel columns with roof trusses. Based on the analysis conducted technology developed pocket-type node devices, allowing to optimize the labor intensity of construction and installation work and ensure the necessary reliability and quality indicators.
Senior Lecturer – Mkrtich Tonakanyan
The advantages of the proposed solution were experimentally confirmed. In addition, a set of equipment for installing the steel truss using the new technology has been developed, as well as a technological regulation and a process sheet for its practical implementation.
Scientific novelty of the work consists in determining the technological parameters affecting the execution of installation work during the joining of the main load-bearing elements of steel structures. Also proposed are a methodology and an algorithm for calculating the ease of installation based on indicators obtained during the study. The effectiveness of the “pocket-type” connection device, which allows reducing labor costs during the installation of this node, is theoretically and experimentally substantiated.
The results of the work can be applied organizations engaged in the development of technological regulations and process sheets for the manufacturing and installation of building structures with steel frames. The research materials can also be used in the educational process at SPbSASU in training construction specialists and serve as a foundation for further research in the field of construction production technology.
The research work “Technology of pocket-type connection device of a steel column with a roof truss” was carried out within the framework of the grant competition for research work by scientific and pedagogical staff of SPbGASU in 2026.
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