The Optimization Design Of Jinan Luding International Foundation Pit Engineering Pile Anchor Bracing System

After entering the21st century has been strongly pushing urbanization construction in ourcountry which can lead to all kinds of building (structure) structures were built. But, the amountof arable land decrease in persecute we cannot too much occupation of land resources. Thisprompted us to overhead and underground space development. Especially in recent years, allkinds of high-rise buildings and underground buildings construction to promote thedevelopment and progress of China’s technology of foundation pit excavation.Excavation on the surrounding environment influence is bigger, And have a lot ofincomprehensibility, This requires that we consider all aspects of the factors, To minimize thedanger, The increase of excavation depth will lead to the foundation pit collapse probability, Itwas affected the construction progress, and increase the budget of the project cost. So, giventhe incomprehensibility of foundation pit excavation and dangerous, requires that we are in theprocess of excavation of foundation pit in real-time monitoring.This thesis is based on Jinan LuDing international foundation pit engineering project,making numerical simulation and spot monitoring of the foundation pile anchor supportingstructure. By finite element software under the condition of control variables, the simulationanalysis of the cantilever retaining structure without any support which is set with two outsidethe anchor of single fulcrum supporting structure of pit deformation of soil, and feel free tofeedback to the construction process to guide the construction, so as to achieve the optimizationof supporting design. Through the field of soil around the foundation pit deformation on thestructure of the maintenance and the real-time monitoring, the records of the monitoring dataanalysis, comparing the results with the theory of computer software design value; the endresult is the same.In the process of foundation pit excavation, Due to the foundation pit wall passive earthpressure decreases, Soil and excavation surface above the weight is released in full or part of therelease of excavation unloading process (so-called) reduce soil stress at the bottom of thefoundation pit, Broke the original stress balance of soil, So lead to lateral wall displacement.The paper draw the following conclusions:(1) in the case of deep foundation pit, the singlefulcrum supporting structure control the pit soil deformation than the cantilever retaining structure control the pit soil mass deformation ability is better;(2) this project outside the pitsoil horizontal displacement and settlement monitoring data of the maximum value does notexceed alert, and monitoring of the change curve and finite element simulation coincidedbasically with the curve;(3) the effect proves that the simulation has been made, retainingstructure for deep foundation pit USES single priority protection control.