Influence Of Water Content On Mechanical Parameters Of Clay Soil And Its Engineering Application

Deep foundation pit engineering in high-rise buildings has a very important position and is a comprehensive system engineering of high.In the field of geotechnical engineering,the support technology of deep foundation pit is also an important part.For various types of construction projects,the supporting technology of deep foundation pit is also an important link,so a reasonable foundation pit support protection engineering design can not only reduce the cost of the project effectively,but also improved the quality of the project,and can greatly reduce the probability of the accident.With the rapid economic growth in China,a large number of high-rise,super high-rise buildings and underground engineering are rising in the construction industry of our country,so the number of deep foundation pit engineering is also increasing greatly,so the application of supporting technology to deep foundation pit engineering is becoming more and more.This paper takes a foundation pit project in Huainan as the research object,considering the effect of water content on the external load of the supporting structure during the use of the project,and considering the actual conditions of the project to select the mechanical index of soil to design and calculate the support structure,the precipitation design of the foundation pit and the final settlement calculation after precipitation and the prediction of the maximum settlement of the soil layer are also analyzed.The main research process is as follows:First of all,through the relevant literature at home and abroad papers and journals to read a lot,there is a deep excavation as well as the status of the soil nailing supporting form is studied,in addition to,a number of problems still exist in the deep foundation pit engineering are summarized.Then the direct shear test of clay soil in a foundatio n pit in Huainan is carried out,and its mechanical properties are analyzed briefly,and then the mechanical properties of the soil are obtained.Then,according to the site conditions of deep foundation pit engineering studied in this paper,the corresponding foundation pit support design is made,and the corresponding structural calculation and stability research are carried out,and the dewatering design of the foundation pit is also needed to provide a reliable basis for the construction of the foundation pit.