Study On The Influence Of Deformation Of Foundation Pit In Pit

With the rapid development of China’s economy, more and more people into the city, leading to overcrowding in urban space. Underground construction projects become a trend, excavation also will be more and more, resulting in a form of pit pit pit more and more frequent. Predecessors pit pit pit deformation Study of Factors Affecting rare. Traditional pit excavation pit design is inside the pit, as the outer deceptive split into two separate pit, calculate its stability and deformation, ignoring the inner and outer interaction between the pit, resulting in pit pit pit accidents increasing, research results can pit pit design, construction work theoretical guidance, improve the relevant theoretical research, and promote the establishment of norms pit pit.Chengjiang County, Yunnan Long Run Park, a pit excavation pit Examples of research background, its three-dimensional analysis and calculation in each condition, the deformation characteristics outside the pit using the finite element method, calculate the controlling factor in different conditions inside and outside the pit deformation.Different pit spacing, different depth within the excavation pit, pit pit different soil properties affect the deformation of proposed pit excavation support in the way of rationalization proposals.The results show that:for inside and outside and far away from the excavation pit depth and consistent support in the form of a multilayer structure pit pit pit, large deformation in the pit supporting structure in a pit outside; inside and outside the pit supporting structure the horizontal displacement within the soil pit excavation by large impact, subject to the settlement amount is small, almost unchanged; pit pitch 2m and 10m threshold influence within the pit roof deformation; pit pitch 2m to affect critical outside pit horizontal displacement value; in the pit excavation depth 2m and 10m for the impact thresholds pit pit pit horizontal displacement; within the pit excavation depth are smaller or larger horizontal displacement pit pit pit big impact; within pit excavation depth 4m as affecting the threshold pit pit pit settlement; deformation pit pit pit with soil Poisson’s ratio is directly proportional to the elastic modulus; with respect to the different pit spacing within different excavation pit depth words, the nature of the soil is not very different soil deformation affecting the right pit pit pit smaller weights.