1.Fundamental Theory and Applied Fundamental Theory

       1）Geotechnical Physics under Extreme Conditions

• Investigate the basic physical characteristics of geotechnical materials under extreme conditions such as ultra-low temperatures and intense freeze-thaw cycles.

• Explore the structural, composition, thermal conductivity, and other fundamental physical properties of geotechnical materials under these conditions.

• Uncover the mechanical mechanisms of ice formation, types of crystals, and structural configurations in geotechnical materials under extreme conditions.

• Establish a database of the basic characteristics of geotechnical materials and ice under extreme conditions.

     2）Geomechanics and Constitutive Theory under Extreme Conditions

• Conduct research on the geomechanical behavior of soil and rock under complex geological conditions in Chengdu-Chongqing area and western China, including high ground temperature, high geostress, and high water and gas pressure.

• Develop strength constitutive theories for water – thermal – mechanical – chemical multi-field coupling.

• Study the geomechanical properties of geotechnical materials in polar engineering and complex geological environments under extreme conditions, such as ultra-low temperatures, large temperature differences and high-frequency freeze-thaw cycles.

• Establish a mechanical theoretical system for special geotechnical materials under extreme conditions.

    3）Theory of Civil Engineering Materials under Extreme Conditions

• Investigate the microstructure and macroscopic performance decay processes and evolution patterns of materials like concrete, steel, asphalt, energy-saving coatings, and reinforcement materials under extreme conditions such as high geostress, high ground temperature, ultra-low temperatures, high water and gas pressure, harmful gases, and strong radiation.

• Reveal the mechanisms of material performance deterioration.

• Establish theoretical models for predicting the performance degradation of civil engineering materials under comprehensive extreme conditions.

• Develop design theories for enhancing material performance.

2.Engineering Technology

    1）Multi-scene Coupling Simulation Technology under Extreme Conditions

• Based on the coupling theoretical models for engineering under extreme conditions, develop a numerical simulation platform for civil engineering structures like roads, bridges, tunnels, and buildings under complex multi-scenario coupling.

• Establish advanced simulation technologies for multi-field, multi-phase coupling disaster evolution, full life-cycle service of engineering structures, and multi-scale material characteristics under extreme conditions.

• Provide platform support for practical engineering construction and technology development.

    2）Civil Engineering Construction Technology under Extreme Conditions

• Develop core technologies for tunnel engineering, road engineering, and slope engineering under extreme complex geological environments such as high ground temperature, high geostress, high water and gas pressure, and harmful gases.

• Address key challenges in tunnel and geotechnical engineering construction in the Chengdu-Chongqing region and western mountainous areas of China.

• Develop construction technologies for polar hydraulic structures, underwater engineering, as well as snow and ice runways, under low-temperature, icy, snowy, and permafrost environments.

    3）Design and Development of Civil Engineering Materials under Extreme Conditions

• For transportation civil engineering projects under high-frequency freeze-thaw cycles, extreme low temperatures, and strong radiation conditions, develop high-performance concrete materials, high-performance nano-reinforcement materials for engineering maintenance, intelligent energy storage and regulation materials, energy-saving coating materials, and high-performance weather-resistant materials.

    4）Intelligent Construction and Maintenance Equipment under Extreme Conditions

• Utilize advanced information technologies such as artificial intelligence, big data, the Internet of Things, and digital twins to develop high-performance intelligent construction equipment for civil engineering.

• Develop intelligent drilling and blasting construction equipment, intelligent collaborative management systems for engineering, and special equipment for additive construction.

• Develop a digital platform for the intelligent maintenance of traffic infrastructure, incorporating information perception, disaster identification, and early warning decision-making.