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在非地震主动土压力公式的基础上,用微分薄层法给出了地震条件下被动土压力公式和计算方法,在公式中我们考虑墙后破裂土体存在水平和垂直向地震加速度,填土面倾斜,墙背倾斜,填料本身具有粘聚力c和内摩擦角,挡墙墙背与填料黏结力c’和外摩擦角’,墙后填土为分层土。目前所见的地震情况下和非地震情况下的被动土压力公式基本是本文公式的特例,但也有不同之处,在工程中应予以注意。
On the basis of the non-seismic active earth pressure formula, the formula and calculation method of passive earth pressure under earthquake condition are given by using the differential thin-layer method. In the formula, we consider the existence of horizontal earthquakes and vertical earthquakes, Tilt, back tilt, the filler itself has cohesion c and friction angle 挡, retaining the wall back and filler adhesion c ’and the outer friction angle ’, the backfill of the wall is layered soil. At present, the passive earth pressure formula under earthquake conditions and non-earthquake conditions is basically a special case of this formula, but there are also differences, which should be paid attention to in the project.