Loess is a kind of typical structural soil , its special structure and special sensitivity to water effect on the characteristics of engineering mechanics of loess , this is also the special aspect of the study on dynamic behavior of loess 黃土是一種典型的結構性土,其特殊的結構性和對水的特殊敏感性直接影響著黃土的工程力學性質,這也是黃土動力學研究的特殊性所在。
Because these factors make change more often , soil time space variability is more bigger . the relationship of single factor between soil water infiltration capacities and certain influencing factor could be established quantitatively by means of soil water infiltration tests in indoor , there is negative correlation relation between soil water infiltration capacities and soil structure . there is negative correlation relation in high grit content and low physical clay content soil , and second - degree polynomial relation in high physical clay content junk structural soil between soil water infiltration capacities and soil moisture 由于這些因素在時刻發(fā)生變化,使得土壤的時空變異性較大,只能用室內土壤水分入滲試驗來定量確定土壤水分入滲能力與某些影響因素之間的單因子相關關系,土壤水分入滲能力與土壤結構之間呈負相關關系,土壤水分入滲能力與土壤含水量之間在土壤砂粒含量高,物理性粘粒含量低的無結構土壤中呈負相關關系,在物理性粘粒含量高的團粒結構土壤中呈二次多項式關系。
Then , the deformation of soil particle skeleton under the physical chemistry of electrical double ] ayer and exterior load are simulated , indicating the micro - mechanism of deformation , failure and creep for structural soil . because conventional constitute models are constructed according to reconstituted clays , not considering the structure in natural clays and structure damage course during loading , a elasto - viscoplastic damage model and the parameter determining method are put forward 針對過去用重塑土試驗建立的本構模型,沒能考慮天然土體中存在的結構性,沒有描述結構性土從天然原狀到加荷破壞的這一過程,建立了一個描述結構性土的彈粘塑損傷模型和參數確定方法。
Structural Soil is a medium that can be compacted to pavement design and installation requirements while permitting root growth. It is a mixture of gap-graded gravels (made of crushed stone), clay loam, and a hydrogel stabilizing agent to keep the mixture from separating.