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小桩复合地基是近年来发展起来的一种新法处理的地基。本文介绍了它的承载机理和运用范围。结合实际工程,从试验研究、设计、施工及检验等各个方面进行了论述。用这种方法处理的地基,具有较高的承载力和较小的变形及差异沉降变形。与桩基比较它承受水平力强,特别是在地震作用下有调整上部结构受力状态的功能。同时还具有选材面广、节省钢材、缩短工期等特点。与灌注桩比较,节省投资60％。是冷却塔比较理想的地基处理方法。
The small pile composite foundation is a new method that has been developed in recent years. This article describes its bearing mechanism and application scope. Combining with actual projects, it discusses various aspects including experimental research, design, construction and inspection. The foundations treated with this method have higher bearing capacity and less deformation and differential settlement. Compared with the pile foundation, it bears strong horizontal force, especially under the action of earthquake, it has the function of adjusting the stress state of the superstructure. At the same time also has a wide selection of materials, save steel, shorten the duration and so on. Compared with cast-in-place piles, it saves investment by 60%. It is an ideal foundation treatment method for cooling towers.