一维固结变形理论参数的试验分析

通过对原状土样及重塑土样的一维固结及渗透试验分析,对一维固结变形理论中的有关试验参数进了系统试验分析。探索了土体侧压力系数在固结过程中的变化规律,发现对正常固结土存在一临界固结压力,当固结压力大于该值时,土体的变形以次固结变形为主;通过对渗透系数的变化进行分析,表明土体结构对渗透系数有较大影响,且提出了渗透系数的计算公式;同时利用割线模量法给出了地基沉降的计算公式。在此基础上,对固结系数的算法进行了有益的尝试,并将之与传统方法进行对比,提出了一种固结沉降计算新方法。最后,通过工程实例,验证了研究成果的可靠性。

Experimental Analysis of Parameter on Consolidation Deformation Theory

The analysis of the original state soil and disturbance soil is performed through the experiment of consolidation and permeability.The relevant experiment parameters to one-dimension consolidation deformation are analyzed systematically.The variation regularity of side pressure coefficient is investigated in the consolidation process.There is a critical consolidation stress of normally consolidated soil.When consolidation stress is bigger than it,the consolidation settlement is secondary consolidation settlement generally.The variation regularity of permeability coefficient is analyzed,showing the soil structure has important influence on permeability coefficient.The formula of permeability coefficient is given and the formula of foundation settlement is put forward via the method of scant modulus.Comparing to traditional methods,a new kind of consolidation deformation computing method is put forward.The effectivity of the research results is verified through the example of engineering.