Overview
Structural assessment is a procedure used to evaluate the adequacy, structural integrity and soundness of structures and their components. It is performed to ensure that structures meet all applicable building codes related to structural integrity and can be conducted in response to a major structural or functional deficiency detected during an inspection. During a structural assessment, engineers visit the property and observe, note and discuss particular structural items.
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It is to determine the strength, stability and safety of underground structures such as tunnels, mines, and underground buildings. This includes assessing the ability of these structures to withstand loads and forces such as soil pressure, rock stress, and ground movement. The analysis also considers factors such as the geology of the site, the materials used in construction, and the design of the structure. The outcome of the analysis is used to determine if the structure is safe for use and if any modifications or repairs are needed to ensure its long-term stability and safety.
Structural analysis in underground typically includes several key components. Based on the results of the analysis, recommendations for maintenance and repairs may be made to ensure the long-term stability and safety of the structure.
Geotechnical analysis: This involves studying the properties of the soil and rock surrounding the underground structure, such as its strength, compressibility, and susceptibility to water infiltration. This is important to understand how the soil and rock will behave and affect the structure during construction and over time.
Stress analysis: This involves determining the distribution of stresses within the structure caused by external loads such as soil pressure and ground movement.
Deformation analysis: This looks at how the structure will move and change shape under different loads and boundary conditions.
Stability analysis: This evaluates the overall stability of the underground structure and its ability to resist collapse or failure.
There are several types of underground structures that can be analyzed structurally, including:
Tunnels: These are underground passageways used for transportation, such as road and rail tunnels, and pedestrian and service tunnels.
Mines: These are underground excavations used for extracting minerals and other resources.
Underground buildings: These are structures built entirely or partially below ground level, such as basements, underground garages, and underground stations.
Underground storage facilities: These are structures used for storage of resources such as liquid and gas storage tanks, nuclear waste disposal facilities and also underground power plants.
Shafts: These are vertical or inclined excavations used for ventilation, access, or transportation in mines and underground buildings.
Retaining walls: These are structures used to support soil or rock in underground excavations.
Underground water structures: These are structures designed to control and manage water resources, such as underground dams and reservoirs, underground canals and culverts.
The type of structure and the purpose it serves will determine the specific analysis methods used to evaluate its structural integrity, safety and stability.
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