砂垫层是采用级配良好、质地坚硬的中粗砂和碎石、卵石等，经分层夯实，作为基础的持力层。
n. sand bed
misc. sand cushion ; sand mat
基本释义 ... 热压沥青砂毡层 rolledsandcarpet 砂滤池，砂滤层 sand filters 砂垫层 沙垫层 sandcushion ...
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排水砂垫层 sand mat of subgrade ; drainage sand mat ; drainage sand blanker ; sand filled drainage layer
路基砂垫层 sand mat of subgrade
砂垫层流失 loss of sand cushion
砂浆垫层 bedding mortar ; mortar bed
垫层砂浆 Bedding Mortar
水泥砂浆垫层 cement and sand cushion ; cement mortar bedding cushion
砂石垫层 sand-gravel cushion
砂胶垫层 mastic cushion
Over traditional methods used in this region, method of sand bedding pre-elevating and step water-filling pre-compressing has advantages in shorting construction period, simplifying construction. Furthermore, this method solves the difficulty induced by constructing at rain season.
与本地区传统的施工方法相比，砂垫层预抬高分级充水预压法不仅工期短、施工方法简便，而且克服了雨季施工的困难。
参考来源 - 砂垫层预抬高分级充水预压处理油罐地基技术研究On this basis, several reinforcement processing measures, which used plastic drainage boards, geotechnical grilles, gravel piles, and sand cushion, were compared by Bishop method, and these measures were compared again by Finite Element method.
在此基础上对拟建高速公路使用塑料排水板、土工格栅、碎石桩、砂垫层等处理措施使用Bishop法进行计算比较,分析各措施对软基路堤稳定性、工后变形量的影响程度,然后通过有限元法对土工格栅、塑料排水板及碎石桩加固方法进行了验算。
参考来源 - 高速公路沟谷型软基路堤稳定性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
本文还对砂垫层的作用提出了新的看法。
This paper also presents some new opinions on the use of sand cushion.
由于砂垫层的应力扩散作用，加筋砂垫层减小了堤底的不均匀沉降。
Because of the stress diffusivity, reinforced sand blankets decreased the differential settlement on the bottom of the embankment.
根据建筑荷载以及实际情况进行方案比选，采用了砂垫层换填法处理地基。
Following the required loading conditions of the foundation, a sand bedding course was used for its groundsill.
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