Design And Safety Analysis Of A Deep Foundation Pit Excavation

With the rapid development of the construction industry,the construction industry in all parts of China has also ushered in a new momentum of development.At the same time,the country in the face of such a good development at the same time,but also for the development of our country’s construction industry has put forward more stringent requirements.Especially the development of deep foundation pit engineering,because of the difficulty of foundation pit construction technology,or the influence factors of various geological conditions,may cause many limitations in actual construction and numerical simulation.This requires us to do a good job in the construction process of synchronous monitoring,to meet safety requirements.At the same time,higher requirements for the quality,quality,standard and industrialization of the building have been put forward.In the present society,great demand has been made for the development of China’s construction industry,therefore,the state and government departments should strengthen the supervision of China’s construction industry,so as to ensure the healthy and positive development of China’s construction industry.Deep foundation pit project often has unexpected accidents during construction,which is mainly due to the support structure of the foundation pit.From the bottom of the thesis,the selection of the supporting scheme and the safety evaluation of the deep foundation pit project are carried out:(1)On the basis of collecting the data and my literature,I know the possible problems in the design and excavation support of the deep foundation pit,in order to ensure the safety and stability of foundation pit engineering,the monitoring of excavation in excavation is analyzed,and its own views are put forward.(2)Numerical simulation of excavation and support of foundation pit engineering is carried out by using FLAC3D software,the simulation results are compared with the actual monitoring results.In contrast analysis,it can be seen that the numerical simulation and the actual monitoring data provided by the project can basically coincide,the deviation is within the allowable range.It can be seen that the FLAC numerical simulation has good reference value for the excavation supporting of foundation pit.(3)In this paper,the selected project of a deep excavation project in Weifang and its surrounding environment are introduced in detail,Then,according to the engineering geological conditions and engineering requirements,as well as to achieve the economic and safety considerations,to select the appropriate program for the support design of foundation pit engineering.