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沿海地区广泛分布着深厚的软土地基,其孔隙比大、含水量高、压缩性大、且强度及承载力低,在这种地基上修筑建筑物,需对其进行加固处理。塑料排水板预压联合强夯处理地基是针对吹填软土的物理特性而形成的一种新技术;它很好地结合了两种加固方法的优势,使吹填土地基得到有效地加固。以天津南疆油罐地基处理工程为实例,应用预压-强夯法进行处理,通过现场监测,得到处理过程中土体物理力学性能的变化规律以及地基的加固效果,可以为今后类似的软基处理工程提供依据和借鉴。
The coastal area is widely distributed with deep soft soil foundation, which has large void ratio, high water content, large compressibility and low strength and bearing capacity. It is necessary to reinforce the building on such foundation. The combination of plastic drainage board preloading and dynamic compaction is a new technology which is based on the physical characteristics of soft soil dredging; it combines the advantages of the two kinds of reinforcement methods well and effectively reinforces the foundation of dredger fill. Taking Tianjin South Xinjiang oil tank foundation treatment project as an example, prestressed and dynamic compaction method was used for the treatment. Through the on-the-spot monitoring, the changing rules of the physical and mechanical properties of the soil and the reinforcing effect of the foundation during the treatment process can be obtained, Foundation treatment project to provide the basis and reference.