Research And Application Of Deep Foundation Pit Support Technology In Yanji Area

Although the deep foundation pit engineering support technology has achieved many successful experiences in different regions and geological conditions across the country,and even reached international standards,there are still some issues that need further research or improvement to meet the needs of modern economic construction.The problems that often exist in deep foundation pit support construction are as follows:1?Stronger rationality and comprehensiveness;2?The excavation of the soil layer does not match the support of the slope;3?Slope repair fails to meet design and specification requirements;4?The construction process is too different from the design.Based on the research and analysis of relevant geological survey and laboratory test data in Yanji area and the surrounding environment,this topic systematically analyzes and studies the selection,design,and construction of deep foundation pit support methods.The research content and The technical route is as follows:The special geotechnical properties of Yanji area have added difficulty and complexity to the construction of deep foundation pits in Yanji area,which has caused certain problems for the rapid development of economic construction in Yanji area.For the deep foundation pit support project in Yanji area,it is necessary to adapt to the local conditions,and develop a support plan that is compatible with the regional soil characteristics and engineering needs,and has certain regional characteristics.At the same time,the development of urban economic construction has also put forward higher requirements for the support of foundation pits.In order to study the economic and reasonable support methods applicable to Yanji area,this article mainly works from the following aspects:Through a lot of literature references and actual investigations,the engineering technology forms and characteristics of deep foundation pit support in Yanji area were summarized.The working principle,design calculation method,applicability and advantages and disadvantages of common support forms in Yanji area are introduced in detail.Through engineering examples,according to the engineering geological conditions at the site,the load conditions of surrounding buildings and the physical conditions at the site,select relevant parameters such as mechanical properties,formulate corresponding support plans,and design specific support forms.Through the analysis of on-site deformation monitoring,settlement monitoring and monitoring results,the horizontal direction of the top of the foundation pit and the characteristics of settlement deformation are obtained,and its deformation is further predicted as a basis.