| This article not only has carried on the analysis and summary of the currentfoundation pit supporting common structural types and their characteristics andconditions of use, but also discussed the influence factors and design principle that needto be considered in the foundation pit supporting scheme selection, what provides thereference for the engineering of foundation pit supporting primary select; Then thearticle has introduced several currently used mature mathematical optimization theoryand they’re application to the optimization of foundation pit supporting scheme andcombined with expert judges and AHP method to put forward a scientific selectionprocess, what provided a qualitative and quantitative comprehensive judgment methodfor the optimum scheme of deep foundation pit support engineering.For a foundation pit engineering example, according to the geological conditionsand engineering characteristics of foundation pit, the article has selected three feasiblescheme and made a scheme optimization by using the method of combining with expertjudges and AHP method. And it also made a calculation results verify by using theMATLAB mathematical software, what provided a feasible and rapid tool to make anoptimized selection of supporting scheme of deep foundation pit engineering; Then thearticle has calculated the optimized scheme design by the deep foundation pitsupporting structure design software of the company’s R&D Beijing Li Zheng; Finally,the paper has carried on the simulation analysis of excavation process withMIDAS/GTS finite element analysis software, and rectified the parameters of optimizeddesign to make optimized design compared to the actual engineering plan morereasonable. |
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