Finite Element Analysis Of Open Caisson Structure Based On The Middle Route Of South To North Water Diversion Project

The caisson can be used for the construction of the underground engineering and construction of a deep foundation as wall structure form,compared with the construction process or method of other types,can be found with the following advantages: the construction process of open caisson construction,reliable soil less,reduce mining investment,construction period is very short.In general,strengthen the research on the construction technology of caisson caisson structure,accurate simulation of stress and displacement of the image process and results were analyzed,which undoubtedly has important practical significance and can provide a certain reference value.The topic of this thesis comes to the "Henan province water diversion area of Zhengzhou Water Supply Project No.23 gate gate north west section of canal water line design change report",In this paper,an example of a supporting project in the Zhengzhou section is taken as the research objective,and a systematic study of the caisson is carried out.First of all,in combination with a large number of references a complete description of the basic structure,the caisson design method and construction process and the matters needing attention in the construction,then the project feasibility of the caisson structure specification method,namely the traditional earth pressure theory,calculated on the caisson structure anti floating stability and anti sliding stability conditions,and comparison is in accordance with the requirements and design specifications;Then,according to the caisson structure using the finite element software ANSYS,the construction of caisson entity three-dimensional finite element model of the overall stress analysis stage and stress analysis under different conditions by the changes of the actual occurrence in the project,after applying the initial model on the wall and the floor stress nephogram and the displacement force should be;Finally,according to the nephogram value,the results of the stress and displacement variation of the caisson are compared with the design requirements,and the conclusion that the caisson structure meets the design requirements is obtained,which complements the shortcomings of the traditional caisson study.Considering the stress generated in the caisson structure during construction and operation,the two conditions are different.Therefore,it is necessary to carry out finite element simulation for the caisson structure under different working conditions,analyze its stress and displacement changes,and compare the two types of stress and displacement values before and after the law.The results can be used for reference to the analysis and research of similar engineering structures.