Application Of Soil Nailing Wall In Supporting Engineering

After excavation of the foundation pit,in order to ensure the safe and normal construction of underground engineering,the foundation and the surrounding environment of the foundation pit need to take certain support,reinforcement and protection measures.The excavation depth of this project is small,Stratigraphic structure is mainly cohesive soil,and the groundwater level is relatively deep,comprehensive consideration,in many support design,soil nailing wall was finally identified as the project support program.Although the soil nailing wall is a kind of support in the past few decades,especially in China only 20 years of history,but since the emergence of soil nailing wall with its economic,flexible,fast construction and other advantages quickly around the world Development,has become the best choice for many projects,soil nailing wall of many practical projects to its theoretical system has gradually been improved.In the first chapter,the development course of soil nailing wall and the present situation of soil nailing wall development at home and abroad are introduced in the first chapter,so that readers can understand the current research focus of soil nailing wall.The second chapter focuses on the concept of soil nailing wall and its design theory,and makes a detailed introduction to the overall stability checking and the calculation of single soil nail capacity,and explains the relevant parameters.In the third chapter,combining with the practical engineering case,combining the theory and practice,it proves the applicability and reliability of the supporting technology of soil nailing wall in the self-stabilizing cohesive soil,and the unexpected situation Timely adjustment,fully demonstrated the flexibility of soil nailing support.In order to ensure the correctness of the design and improve the design efficiency,this paper uses the Beijing deep foundation pit design software to calculate,including the stability of the support structure of the calculation,to determine the size and length of the main reinforcement,but also The calculation and design of the braided steel used in the concrete spray surface was carried out to determine the reinforcement and arrangement of the steel bars.In addition,the construction organization design of soil nailing wall is described in detail,and the various methods used in the construction organization design are introduced to ensure the construction quality and the construction period is as short as possible.This good construction organization plans to reduce the construction cost for the project The This paper also introduces the purpose,principle and basic requirements of foundation pit monitoring.In this paper,the detailed test plan is made in this case,and the observation of the foundation pit is done in detail.Displacement changes are within the design.The fourth chapter cites a success story of a soil nailing wall in support of water-rich soft soil,to show that soil nailing walls are still likely to be successful in some unfavorable strata,or that we are waiting for us to discover some new ways These can not become possible.The fifth chapter describes the composite soil nailing wall in detail,and the composite soil nailing wall is a comprehensive technique developed on the basis of soil nailing wall.This chapter combined with engineering examples,we can see more clearly that the composite soil nailing wall is a combination of soil nailing wall in a variety of other advanced support techniques,this technology not only retained the excellent characteristics of soil nailing wall,But also added other support or water retaining function so that soil nailing wall can be applied in more support projects.In order to ensure the normal construction of various types of projects,it can shorten the construction period and reduce the construction cost.In this paper,the analysis of soil nailing support is of great significance to the design of supporting pit in the future.At the same time,there is still a lot of room for development of soil nailing wall to be further developed to enrich the design system of soil nailing wall,So that the soil nailing wall of this support in more and more complex projects to be applied.