Study on constitutive relation of loess moistening deformation based on secant - modulus method 基于割線模量法的黃土增濕變形本構關系研究
Firstly , the paper puts out the formulas used to calculate displacement by secant modulus , which think about the influence on lateral displacement 提出了飽和粘土利用割線模量法計算固結沉降,且考慮側向變形影響的公式。
The secant modulus is used to calculate final settlement of high - stacked soil , compared with the result of e ~ p curve , the error is in the limit of tolerance 同時將割線模量計算沉降的方法應用到高填方自身作用下的最終沉降計算中,通過與應用e p曲線計算的結果進行比較,其誤差在允許范圍之內。
Empirical expressions of the total longitudinal strain and the secant modulus are given . in addition , the relationships of the increasing rate of the total second - stage strain and the decreasing rate of the secant modulus with the number of cycles are obtained respectively 給出了縱向總應變、割線模量的經驗公式,及其第二階段總應變增長率、割線模量衰減率分別與疲勞壽命的經驗公式。
The reliability of secant modulus method is validated in which final consolidation settlement is computed . the experience formula of coefficient of permeability ( k , 0 ) and pore ratio ( e ) is presented and the experience expression of coefficient of permeability ( k10 ) and strain ( ) is offered too . lt is important to modity the acquiring method of coefficient of consolidation , because the method embodies that strain and pressure of consolidation effect on coefficient of consolidation 本文首先驗證了用割線模量法計算軟土地基最終固結沉降的可靠性;其次得到了滲透參數k _ ( 10 )和孔隙比e的經驗關系,并且更進一步給出了滲透系數k _ ( 10 )和應變之間的經驗公式,更重要的是對求取固結系數的方法給予了改進,該方法反映了固結系數隨應變和應固結壓力的變化規律。
During continuous loading , the loess ' s structure is destroyed completely at the point of the least secant modulus and the loess ' s deforming process goes into the third stage after it the experiential - analytical solution of the secant modulus of different stages is deduced and the influence of water content is analyzed 本文提出了即時割線模量的概念,認為在荷載連續施加過程中,割線模量最小的點即結構完全破壞點,此后即進入第三階段。通過分階段進行分析探討,得出了各個階段的割線模量的經驗解析解,并分析了含水量對其產生的影響。