Finite Element Numerical Simulation Of Excavation Ofagricultural Building Based On Plaxis

Our country is paying more and more attention to the agricultural architecture, the current pattern of agricultural buildings probably include: greenhouse, poultry house and agricultural sightseeing garden and so on. But with the development of agricultural economy, agricultural construction scale is becoming more and more big, also deepen and foundation pit depth, excavation process is becoming more and more complex. Therefore, using finite element software for large agricultural building to simulate the excavation process can provide some guidance for future actual construction.The author uses PLAXIS finite element software to simulate the excavation of a large home birdhouse breeding base, which is located to the Yongjia country. And set the basement for storage and parking. The project set up in the basement as a warehouse for the storage of poultry feed and other tools. Excavation depth of about 6m, through a variety of program choices, the final choice of support in the form of rows of piles + two prestressed bolting system. In the analysis, using HS model to simulate the elastic plate simulate the row of piles, a combination of point to point anchor and geogrid to simulate a anchor, then calculate the axial force of the bolt through the different conditions change, the horizontal displacement, vertical displacement and the effective stress of soil changes and so on. In addition, the excavation process involves precipitation problems, so groundwater seepage problem to be considered. Finally, comparing the cases of groundwater and no groundwater and draw some conclusions. In the case of different ground load for the left and right sides of excavation section, changes of horizontal displacement of retaining piles under different conditions of soil, the horizontal displacement and vertical displacement change and so on, has the guidance meaning for later in a similar soil in construction.