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我国在土木建筑工程的地基上,采用了大量的砂垫层代替天然冻胀土、软弱土和不匀质的土壤,既节省了水泥、砖、石材料,降低了造价,又简化了施工。仅哈尔滨一个城市从1956年开始大量推广砂垫层的房屋就有几百栋,其中有住宅、学校、医院、办公楼、厂房等。1959年哈工大等单位联合调查了47栋砂垫层房屋,其效果都是良好的。因此,砂垫层是一种可以推广的人工地基结构。以往在设计砂垫层时都不考虑地下水的变动对工程质量的影响,例如在哈尔滨市大
In China, on the foundation of civil engineering projects, a large number of sand cushions are used instead of natural frost-heaving soils, soft soils and inhomogeneous soils, which saves cement, brick and stone materials, reduces the cost, and simplifies construction. Only one city in Harbin began to promote hundreds of housings with sand cushions in 1956, including houses, schools, hospitals, office buildings, and factories. In 1959, Harbin Institute of Technology and other units jointly investigated 47 sand-cushioned houses, and their effects were good. Therefore, the sand cushion is a kind of artificial ground structure that can be popularized. In the past, when designing sand mats, the impact of groundwater changes on the quality of the project was not taken into account, for example, in Harbin City.