Structural engineering is one of the six disciplines of civil engineering, studying common structure selection, mechanical analysis, design theory and construction technology and management in civil engineering. Structural engineering focuses on mechanical analysis of buildings (such as tall buildings, bridges and dams) and structures (such as retaining wall, chimney and frame etc.), including, internal forces under various loading and deformation, the internal force and deformation of structure control, thus guaranteeing the structure safety reliability in construction and in the process of using.