基坑开挖支护.ppt
Application of PFC3D for determination of soil properties and simulation of the excavation process in front of sheet pile wall constructions,1,2,Content,-Reproducible numerical soil properties,-Ball parameters for specific soils,Simulation of the excavation process in front of sheet pile wall constructions-unsupported-single supported-single supported with a plastic hinge,-Conclusions,3,Reproducibility of soil parameters,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,(pore content and inner friction angle of granular soils),W/H/D=4.70/3.00/0.60 m,W=H=D=2.14 m,soil balls d=0.20 m,4,Reproducible pore content,slender container,mean pore content=0.4011,variation coefficient=0.019,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,5,Reproducible inner friction angle at rest,slender container,k0=2 E0/(h2 t)k0=1 sin,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,6,Reproducibility,pore content,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,inner friction angle,For low stochastic effects on the results:15 balls in a row mathematically on one confining wall.,7,Ball parameters at 1g level,granular soils:=30-40;n=0.400,ball diameters d=2 mm-20 cm,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,8,Cubic container,15 x d;=30;n=0.400,pouring and rest,ks_pour=715.18 br 2.0259,sf_rest=0.30 0.35,sf_pour=0.2,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,9,Cubic container,15 x d;=30-40;n=0.400,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,10,ball parameters,n=0.400,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,Applicability of determined formulas demonstrated at systems deviating from examined ones!,11,Sheet pile wall simulation,-Slender container W/H/D=16.95/10.78/0.70 m,-3 Pentium IV(2.4-2.7 GHz)puters in parallel,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,12,Sheet pile wall simulation-unsupported,excavation depth 1.0 m,2.0 m,3.0 m,3.6 m,4.0 m,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,13,Sheet pile wall simulation-unsupported,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,14,Unsupported sheet pile wall regularly packed,tetragonal spatial centered,y,x,y,z,excavation 4.0 m,excavation 4.5 m,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,15,Unsupported sheet pile wall regularly packed,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,Sheet pile wall simulation-supported,16,excavation depth 3.0 m,4.0 m,5.0 m,6.0 m,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,17,Sheet pile wall simulation-supported,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,Sheet pile wall simulation-supported&plastic hinge,18,excavation depth 4.0 m,5.0 m,6.0 m,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,Sheet pile wall simulation-supported/elastic-plastic,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,19,20,Sheet pile wall simulation-supported/elastic-plastic,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,21,Conclusions,Ball parameters for different soils and container geometries determined,Simulation of excavation processes in front of sheet pile wall constructions,with an insight into the soil,Influence of plastic hinge in sheet pile wall on earth pressure studied for first time without artificial weakening of wall or hydrostatic water pressure-same excavation depth can be reached with a weaker profile when taking the moment-rotation-behavior into account,15 balls per wall length,1.Reproducibility 2.Ball parameters 3.Sheet pile wall simulations 4.Conclusions,
