摘要
本文论述了饱和土体中任一水平截面内有效应力的基本传递方式，即粒间传递与粒内传递，据此推出太沙基有效应力原理公式。并进一步说明在任一土体水平截面上土骨架应力总是大于该截面的平均有效应力，同时说明因同一截面内颗粒应力的不均匀性引起颗粒蠕动而使应力趋于平均值由于饱和上体内有效应力传递方式不同，说明上体截面上与土体与其他刚性建筑物接触面上传递力的关系与方式不同即前者更多的是杜间传递，后者则是接触传递、最后提出在不少教材中对用在解释时说As为截面内粒间接触面积，试验（或通过估计）它约等于土体截面的百分之几，实用上可以忽略不计的说法不够确切。实际是A=（1-n）A．其数值远非百分之几或很小、而是一个不能忽略的数值。
In this paper,according to the description of the basic carry-over method--graincarry-over and grain-t0-train carry-over of effective stress in arbitrary level section of saturatedsoil mass, the formulas of K.Terzaghi effective stress principle are derived. Two facts areexplained that the grain skeleton stress isn't less than the average stress in arbitrary level sectionof soil mass and the creep that resulted from the nonhomogenity of grain stress brings about thestress to approximate average quantity in the same section.Finally, a question about the formula is presented. As is a number which can t be neglected and the correct description: As=(1-n)A.
出处
《宁夏农学院学报》
1997年第1期52-54,共3页
Journal of Ningxia Agricultural College
关键词
有效压力传递
粒间传递
粒内传递
土体截面
effective stress carry-over
grain-to-grain carry-over
grain carry-over
soil mass section
grain section
contact face
