Ilya Yu. Petrov
engineer of LSSIMS, TSNIISK named after V.A. Kucherenko of JSC RCC. Moscow, Russian Federation
Many regions of the Russian Federation are located in seismic areas. Therefore, one of the most important issues of ensuring the mechanical safety of buildings and structures being built in seismically active areas is its seismic resistance. Special methods of seismic protection are becoming more widespread, the use of which allows you to adjust the dynamic response of buildings during seismic impact. In this paper, an approach is considered to ensure seismic protection of the terminal building in the city of Yelizovo in the form of a hydraulic damper.
Research methods: constructive solutions of the building were analyzed in terms of ensuring the seismic resistance of the building. A comparative analysis of the calculations of the building for seismic impact with and without seismic protection elements was carried out. The calculation for the seismic effect was carried out in the time domain using direct integration of the equation of motion, while the damper operation was modeled by an element with hysteresis work. The analysis of the efficiency of seismic protection was carried out.
Results: The results of scientific and technical support are presented within the framework of which the calculations of the spatial model of the terminal building in the city of Yelizovo were carried out for seismic impact with an estimated intensity of 9 points on the SSI-2017 scale . The method of seismic protection in the form of devices regulating the dynamic response of the building (hydraulic damper) is considered. The selection of a seismic protection system was performed and the decrease in accelerations and forces in the main load-bearing structural elements under seismic action was shown.
Structural building systems using cross-laminated timber (CLT) are steadily gaining popularity due to their huge advantages over traditional technical solutions. The lightness of the material, the pliability of the mechanical joints of the panels provides a potential high seismic resistance of buildings made of CLT, despite irreversible damage to the wood panels in the joints. As a result of the inherent competitiveness of cross-laminated wood, their use is gradually increasing worldwide. The article presents a brief review and analysis of existing domestic and foreign regulatory and technical documents and the results of studies performed in the field of calculation and design of buildings based on CLT panels erected in earthquake-prone areas. The results of experimental studies aimed at studying the features of the operation of CLT panels with different numbers and arrangement of lamella layers under the influence of static and dynamic loads simulating seismic effects are presented. The results of recent achievements in the field of experimental studies of CLT building structures under seismic loads are reviewed and summarized to demonstrate current progress, problems and future directions of research.