The Research On Preferred Programmes Of Retaining And Protection For Deep Excavations About Handan East Station Square

In recent years, with the rapid development and utilization of undergroundconstruction space, the number of deep excavation, difficulty, and construction fundshave been increasing, optimization of bracing projects is better able to ensure rationalityand scientific nature. This paper sets the example of the deep excavation in front of theHandan East station square, analyzing the preferred embodiment of the deep foundationpit, putting effort mainly on the following aspects of work:(1)Summary the previous research on foundation pit support, according to thecommon foundation pit support from the view of the advantages and disadvantages onscope of application, from the engineering reality, excavation engineering support in theform of primaries.(2)Make use of AHP to select the preferred Foundation support method. To set thesecurity controls, economical, environmental protection, construction convenient4as aquasi-side layer, along with the12factors as an indicator layer, following this establishthe foundation pit retaining programmes index evaluation system.(3)Use expert scoring method to construct the17judgment matrix eigenvaluemethod and then to determine the judgment matrix eigenvalue and the weight vector,testing the consistency of each monolayer and Sort of the program layer, ultimatelyprefer a solution as same as the actual use.(4)Using the deep excavation Software on the excavation engineering stabilitychecking, security parameters of the pile-anchor support section and combined boltingshotcreting are to meet the specifications. Use Midas/GTS finite element software onAnchor Piles Bracing segment2D Numerical Simulation. The requirements of PitSupporting Structure displacement and internal force analysis are met.(5)Though the checking by the management for deep excavation software andNumerical Simulation carried out by Midas/GTS software, the application of AHP in thebracing pattern as a preferred one in the the research work is a way that scientific andsimple, as well as Operational and effective method.