Optimization And Numerical Simulation Of Foundation Pit Support Works About Dongda International Center

As China's rapid economic development, urban construction have been expanding. Development and utilization of urban underground space is the only way to maintain sustainable urban development and improve the functions of cities, and the foundation pit carried out underground space development is an important link.Foundation pit is divided into investigation, design, construction in three phases, covering the investigation, excavation support structure of the design and construction, ground water control, transportation and earth excavation pit, pit soil reinforcement, project monitoring and protection of the environment in the process of excavation. In this paper, with the urban areas of Shenyang city in the Dongda International Centre engineering, in a safe, reasonable, economic principles, analyse and study problems for the design, construction in foundation pit, to optimize the process-oriented thinking. In the design stage, through the study of more than expert advice received and grey system theory, select the fulcrum anchor pile structure to do structural design for pit support programme by using the static mechanical equivalent beam method, and Beijing Lizheng Deep Excavation Software is using for the stability of soil analysis; During the construction stage, consider the excavation pit on the order of the space-time effects, environmental effects, choose a reasonable manner to excavate soil in pit.FLAC is a powerful geotechnical engineering analysis software for numerical simulation of rock, soil or other material non-linear mechanical behavior. FLAC software used on Dongda International Center excavation works carried out mock excavation, analysis supporting structure, surface, the bottom displacement change process, and to consider the various factors under the influence of single-and multi-orthogonal experimental design factors influence the level displacement of pile foundation under the changes, draw some important conclusions and provide a useful reference on the design of foundation pit.