Based On ANSYS Finite Element Analysis Of Deep Excavation Dynamic Optimization Design Method

According to the ultimate excavation state of foundation pit and limit equilibrium analysis,traditional deep foundation designs calculate the internal force, displacement, deformation ofsupporting structure.Then check the stability of the soil, and completion of the design finaly.This method is more for the " once design, once construction”, oftenly referred to as" staticdesign ", the advantage is that design theory and design work is simple, often be used in thefoundation pit supporting design. But in the concrete foundation pit, a variety of earthpressure load, the surrounding material loading, soil depth and other parameters are changing,a single static design can not fully meet the requirements of the pit design. Quality foundationsupporting design is high quality, economy, safety. We found that foundation supportingdesign that based on the static theory is often inconsistent performance to specific projectbecause of the changing parameters in the construction process. This may lead to the inputsand outputs into a reciprocal relationship, resulting in waste of resources or securityprotection consequences.With the development of science and technology, especially the development of computersimulation technology, computer simulation technology has become a major trend inreference to the deep foundation pit. Combination of simulation technology, and the authorfor the "static design" to make such an idea, through simulation foundation constructionprocess at every stage of the simulation data fed back to design, use of traditional theory tocomplete their initial foundation support, combined with the construction process againmonitoring data and simulation data, to complete the foundation pit support. This designapproach, the author called "dynamic optimization design".Dynamic optimization design method for the completion of the establishment, I finiteelement analysis software ANSYS into the pit design. Contact surface simulations at thetheoretical level, from the materials simulation software, several modules of the life and deathcell to start to prove that the theory used for the simulation of the Foundation Pit feasible. Ontechnical level, I analyze the specific project with ANSYS,optimize the traditional foundationpit support design, and have achieved good results.the author introduced ANSYS software into the foundation pit supporting the design andestablish dynamic optimization of the design workflow: the traditional deep foundation pitsupport design�'get support program�'create dynamic design calculation model�'analysisthe mutative parameters�'predictive analysis and data feedback�'The original designoptimization�'tracking and monitoring�'feedback to predict predict. Compared to otherdesign,deep foundation design have its own characteristics, the design and construction are interdependent, inseparable. This dynamic optimization of the design and excavation supportare closely linked, it avoids the defects of static design.by reduce resource unreasonable useof the phenomenon, thereby reducing the project cost, also guarantees the pit project securityand stability.