Analysis And Simulation Of Deformation In Soft Soil Pit Excavation With High-water Level

In this paper, Lan Jiang Road, road projects and Hanyang Port lanes alterations, we study the deformation of foundation pit excavation in the characteristics and laws. Summarized research status, ask questions, research ideas, research considering the rainfall and the excavation pit when the characteristics and laws of deformation(?) Simulation and analysis summary, compared with the measured values to verify the accuracy of simulation method for the excavation project design, construction and scientific research provides the scientific research methods, and provide foundation construction process simulation and prediction, to improve the design level and provide an important reference for construction safety.From the theoretical analysis of deformation behavior excavation. Analysis of the deformation mechanism of pit slope failure criterion is given. Formula can be seen from the deformation and deformation parameters of the mathematical relationship. Analysis of the soil and seepage on slope stability deformation. Summarizes the main parameters affecting the deformation and foundation relations. Supporting structure, excavation depth, soil physical characteristics, characteristics of groundwater flow and impact of construction technology is the main factor Pit Slope Deformation. Proposed simulation model equations should be consistent with the research foundation deformation characteristics of foundation deformation methods of calculating three-dimensional simulation of unsteady flow equations based on the deformation equation.A large number of engineering analysis of monitoring data, summarized characteristics of deformation and deformation. Obtained for high-level soft soil excavation, excavation and foundation works deformation of precipitation on the law. Deformation of each excavation pit big paragraph, slow pit deformation. Full face excavation speed the construction process, filling in time, deformation is relatively small, but relatively fast deformation. Greater precipitation, deformation increase accordingly. Slope at the top of the maximum horizontal displacement of soil 55mm, the maximum vertical settlement-24.73mm. Lan Jiang Road, the main structure of the settlement the largest-37.75mm, deformation within the control of design and construction are safe and reasonable.FLAC3D software with the entire process of excavation carried out on three-dimensional simulation, fluid model building, according to geological data and construction technology, a reasonable selection of the parameters. According to the construction process will load into 29 steps, on the whole process of excavation simulation. The results showed that the extent of deformation and excavation showed 2.4-2.6 times the depth of the relationship between the maximum horizontal displacement of 40mm, the maximum settlement value of-36mm. Compared with the monitoring results, the relative value of deformation monitoring small, but close to, a reasonable reflection of the excavation process of deformation, on the construction process of the simulation, with the actual situation achieved good agreement. Deformation of the future of the Foundation has played a very good reference, a reasonable selection of parameters, a careful division of the construction process is to ensure accurate analysis of the key.