Dynamic and seismic analysis of rooftop greenhouse structures according to QMQ 2.01.03-19
Abstract
This study investigates the dynamic and seismic behavior of greenhouse structures installed on the roofs of buildings in accordance with the requirements of the regulatory document QMQ 2.01.03-19 “Construction in Seismic Zones”. Rooftop greenhouses are considered as additional structural systems integrated with existing buildings, which influence the overall mass distribution, stiffness characteristics, and dynamic response of the structure. In this research, a two-storey building with an arched greenhouse structure located on its roof was adopted as the research object. The greenhouse and building were analyzed as a single spatial structural system. Seismic inertial forces were determined based on the mass of structural elements and seismic acceleration parameters. The results showed that the total mass of the greenhouse structure is 910 kg, with the metal frame accounting for the largest portion. Due to the additional mass at the roof level, seismic inertial forces increase significantly, reaching values from 13.6 kN to 27.3 kN for seismic accelerations of 1,5-3,0 m/s 2 . The study demonstrates that reducing structural mass, ensuring uniform stiffness distribution, and strengthening connection nodes are key factors in improving the seismic stability of rooftop greenhouse systems.