Study On The Deep Foundation Excavation Support System Design Of Nanchang Metro Building

With the development of the society, basing on the increasing production valueand strong foundation, the construction industry has a higher request toward thestudies of deep foundation excavation supporting system design. There are somefeatures of deep foundation excavation such as complicated project, large workload, alot of capital and human input and long project period, which make it play animportant role in the process of the whole high-rise buildings construction and affectsthe progress, safety and quality of the project. To guarantee the project quantity,safety and implement speed, the scientific and reasonable excavation support designshould save the engineering cost, reasonably proceed the resource allocation andmaximize the economy and social benefit.There are a lot of factors need to be considered in the progress of the deepfoundation excavation support system design. Not only the soil property, but also thesurrounding environment and the equipments of the construction, impact the selectionof the supporting structure. If the proper excavation supporting forms can be chosenin the foundation excavation support system design, we can smartly shortcut theconstruction period, cost of the foundation excavation. Thus, the deep foundationexcavation support system design plays a very important role in the whole deepfoundation excavation construction.Basing on wide range collection and consulting of document literature, thisessay has a comprehensive analysis of the existing problems, research significance,research status from home and abroad and the development tendency of the deepfoundation excavation support system. It also makes a systematic summarization onthe features, influencing factors and principles of model selection, common usemodel selection of foundation excavation support. Combining the design example ofNanchang Metro Mansion’s deep foundation excavation support system, throughtheoretical analysis, modeling and software calculation, making some analysis andresearch on the project profile, designing scheme comparison, designing schemeoutline, designing calculation and designing scheme technical requirements, andfinally to optimize the designing scheme.