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計算建筑物地基的沉降量或地下結构物的土压力,往往需要知道土的靜止側压力系数。砂土的靜止側压力系数变化范围不大,約为0.4—0.5,而粘性土的則較复杂,不仅与土的种类、密度、含水量等因素有关,并且与土的固結时間有关,随着土中发生固結作用,靜止侧压力系数将逐渐降低,所以在一般手册或规范中列出的粘性土靜止側压力系数,不能在各种情况下都适用,最好是通过側压力試驗直接測定。本文以粘土比較了电側法与压力表測法两种观測側压力的方法,认为电側法准确,尤其是对坚硬的粘性土,其优点更为显
To calculate the settlement of a building foundation or the earth pressure of an underground structure, it is often necessary to know the static side pressure coefficient of the soil. The static pressure coefficient of sand does not change in the range of about 0.4-0.5, but clay soil is more complex, not only related to the type of soil, density, water content and other factors, but also related to the consolidation time of soil. As consolidation occurs in the soil, the static side pressure coefficient will gradually decrease, so the static side pressure coefficient of the clay soil listed in the general manual or specification cannot be applied in all cases. It is better to pass the side pressure test. Direct determination. This paper compares the two side pressures measured by the electric-side method and the pressure gauge method with clay. It is considered that the electric-side method is accurate, especially for the hard cohesive soil.