1.Introduction to disciplines and majors

Engineering mechanics is a branch of mechanics with the cross-development of mechanics and modern engineering technology. This major involves civil engineering, civil construction, transportation, water conservancy and hydropower, urban infrastructure, resource mining, engineering materials, and engineering disaster prevention. Engineering mechanics is extensive, complex, and diverse, reflecting the interdisciplinary development and mutual promotion of multiple disciplines, as well as the fundamental and indispensable role in solving major scientific and engineering technical problems. The main research content includes related mechanical problems and engineering technologies in the fields of underground engineering, structural engineering, tunnels, slopes, hydroelectric dam slopes, bridge engineering, building foundations, geotechnical and building materials, and engineering disaster prevention.

2.Training objectives

Engineering mechanics can be awarded a doctorate in engineering

The recipient of a PhD in engineering in this discipline should have a solid and broad theoretical foundation of mathematics, mechanics and physics of civil engineering materials, in-depth systematic geotechnical and structural engineering mechanical calculations, strength and stability analysis, engineering design optimization, engineering material performance testing And analysis, safety technology and environmental protection, advanced programming and application of computer theory and expertise, have an in-depth understanding of the current status, frontiers and development trends of the subject, and can apply modern mathematical theory and methods, experimental techniques and methods and computers Technology, correctly establish a mechanics-mathematical model for cutting-edge and complex research objects, independently complete major topics of significant scientific research or engineering design, and make innovative results with theoretical and practical significance. Able to use two foreign languages to read professional books and periodicals, one of which can achieve the ability to listen, speak, read and write four sessions and conduct international academic exchanges. Have a rigorous and realistic scientific attitude and style, and the ability to engage in creative scientific research and solve engineering problems. After graduation, he can be competent for teaching, scientific research or engineering technology.

3.research direction

(1)Nonlinear mechanics and engineering

Mainly study the basic theory and engineering practical technology of nonlinear mechanics. Research on underground caverns, stopes, tunnels, shafts, high-rise building foundations, bridges and foundations, highway slopes, mine slopes, water conservancy and hydropower dam foundations and slopes in civil engineering, water conservancy and hydropower, mining, transportation and other departments The law of deformation, displacement and destruction under the action of ordinary force field and coupling force. Through on-site monitoring, laboratory simulation and computer numerical analysis and other comprehensive research, it provides a scientific basis for engineering design and construction, optimization of engineering design, and guarantee of production and construction safety. This research direction is committed to applying modern cutting-edge science and technology, such as artificial intelligence technology, gray theory, numerical simulation, nonlinear mechanics and uncertainty analysis technology, to the geotechnical, structural material mechanical analysis and engineering application research, and constantly improve Scientific level of engineering design and construction.

(2)Engineering stability analysis and control technology

Mainly study the stability and reliability analysis, prediction and control technology of building structures, building foundations, underground railways, underground tunnels, underground caverns, mine shafts and rock slopes, dam slopes and other structures and geotechnical engineering. Through on-site monitoring, physical simulation and numerical calculation, study the influence of various factors and their coupling effects on the stability of the project, study the stability control technology in accordance with the characteristics of static, dynamic and coupling, especially the role of rock and soil reinforcement Mechanism, parameter determination and new technology development, the application of new Austrian method in geotechnical engineering.

(3)Stress and deformation measurement theory and damage detection technology

The state of stress and deformation and their distribution law are the most basic methods for the stability of all projects. Stress and strain measurement is an important means to understand the stress, deformation and failure status and their distribution in engineering. The research focus in this direction is on the following two aspects:

Geostress measurement theory and technology. Research the principles and methods of in-situ stress measurement, especially for the system performance of the most widely used stress relief method and hydraulic fracturing method in discontinuous, heterogeneous, heterogeneous and nonlinear rock masses Experiment and research. Develop practical measurement and analysis techniques and instruments to improve the measurement accuracy and reliability of the stress relief method and hydraulic fracturing method under complex rock mass and geological conditions. At the same time, develop new geostress measurement theory and monitoring technology and instruments.

Non-destructive testing technology. Modern non-destructive testing technology, internal damage, destruction, life assessment, back analysis theory and technical methods of geotechnical materials and engineering structures.

(4)Numerical analysis method and engineering application

Numerical analysis has become the most advantageous means for dynamic process simulation of geotechnical engineering excavation and structural construction, engineering structure optimization design and stability analysis. This research direction mainly studies the application of various numerical analysis methods, including finite element method, boundary element method, discrete element method, discontinuous deformation analysis method and problem back analysis method and optimization design in geotechnical and structural engineering. The focus is on applying the above methods to reasonably and accurately simulate and analyze and solve practical problems in geotechnical and structural engineering. The talents required to be trained must have a solid foundation of mathematics and mechanics, be familiar with the basic principles and methods of numerical analysis, and have the ability to continuously develop existing analytical theories and technologies to make them more practical and more accurate. It should also have the ability to compile utility software.

(5)Engineering Material Physical and Mechanical Properties

This research direction is based on solid mechanics, using the new achievements of fracture mechanics, damage mechanics and rheological mechanics to study the mechanical properties of geotechnical materials and building materials.

Study the mechanical properties of intact rock, study the stress-strain relationship, rock failure type and failure mechanism, rock strength criterion of the rock on the basis of laboratory tests; study the mechanical properties of jointed rock mass, study the influence of structure on rock strength and deformation; study Rock rheological mechanics, rheological properties of rocks and rock masses; study the mechanical properties of soft rocks, the mechanical properties and expansion mechanism of expansive rocks, and the stability control of soft rocks and expansive rocks. To study the meso-failure mechanism and macro-fracture and strength of concrete and artificial composite materials, the effects of creep, fatigue and environmental factors on material performance and life. According to the results of field tests and laboratory tests, the constitutive models of materials such as rocks, rock masses and concrete are also established using relevant mechanical theories, general statistics, fuzzy mathematics, gray theory, artificial intelligence theory and uncertainty analysis theory. Important research content in this direction.

(6)Engineering dynamics and engineering blasting

Study the effect of impact and dynamic load on rock and the effects of stress, strain, displacement, cracks and failure caused in rock mass and crust. In engineering, it mainly studies practical issues related to rock dynamics and engineering, such as rock drilling, rock breaking, pile foundation engineering, underground excavation engineering, rock burst, rock burst, mine shock and earthquake.
Study basic theories of explosives and explosions; modern rock blasting theory; mechanical characteristics and blasting effect of geological structural planes; design and construction of engineering blasting (general soil blasting, large blasting, demolition blasting, and special blasting); blasting measurement technology And computer simulation of the blasting process.