Dynamic Response of Geomaterials Considering Thermal Stress and Its Application in Seismic Engineering.

With the ongoing challenges of global climate change and the rapid development of underground engineering, the mechanical behavior of geomaterials under the combined effects of thermal stress and dynamic loading has become a research focus. Underground structures, such as tunnels and foundation pits, often encounter complex stress environments, especially under extreme dynamic loads like earthquakes, where temperature-induced thermal stress may significantly alter the performance of geomaterials. Although previous studies have examined the dynamic response of geomaterials, most methods have primarily focused on the effects of single stresses, with limited attention to the coupling effects of thermal stress and dynamic loads, leading to insufficient predictive accuracy. To address this issue, this paper first selects and establishes a heat transfer model for the dynamic thermal response of geomaterials and systematically explores the stress-strain evolution laws of geomaterials under compound stress conditions, with particular emphasis on the analysis of thermal stress in seismic engineering. This research provides a theoretical basis for optimizing underground structure design and enhancing seismic performance. [ABSTRACT FROM AUTHOR]