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河南省地处黄河及淮河流域,软土层分布范围比较广,且土层厚度大,这类软土的特点是含水量高、孔隙比大、抗剪强度低、压缩系数高、渗透系统小、沉降稳定时间长,如不做处理,是不能承受大的外荷载,并且会导致地基和上部建筑物的破坏。以往通常采用换土夯实,挤密桩,强夯以及混凝土灌注桩等措施,但这些措施对一般中低层建设工程来说施工
Henan Province is located in the Yellow River and the Huaihe River basin. The distribution of soft soil is relatively wide and the thickness of soil is large. These soft soils are characterized by high water content, large void ratio, low shear strength, high compressibility and small infiltration system Settling stability time is long, if not dealt with, can not afford large external load, and will lead to the destruction of foundation and the upper part of the building. In the past, soil compaction, compaction piles, strong compaction and concrete bored piles were usually adopted. However, these measures are usually applied to middle and low-rise construction projects