论文部分内容阅读
作者认为强夯使地基具有AB层即双层构造。根据实际资料说明。强夯地基的上部(即A层)和下部(B层)各具特点,自成独立系统。夯击过程动应力水平为临界值的那个深度位置即是AB两层的交界。A层属强夯实区,土层变形大且大部分位置经历过“破坏”夯实过程;B层属弱夯实区,变形小且不论击次增加到多大亦不会进入破坏阶段。A层是良好持力层,只要设计合理,施工得当,此层夯后承载力的增加值同夯前土层原有承载力相比,占明显比例;B层承载力大体维持土层原有水平,有时有提高或降低。从实用观点看,主要应查清A层情况及其底界深度;对B层的了解一般情况下达到一定深度即可。
The author believes that the strong foundation has AB layer or double layer structure. According to actual information. The upper part of the foundation (ie, the A-story) and the lower part (the B-story) have their own characteristics and form an independent system. The depth position where the dynamic stress level of the slamming process is the critical value is the junction of the two AB layers. The A-layer is a strong compaction zone. The soil layer is deformed and most of the sites have undergone “destructive” compaction processes. The B-layer is a weak compaction zone with little deformation and it will not enter the destruction stage no matter how large the hits increase. The A-layer is a good bearing layer. As long as the design is reasonable and the construction is properly carried out, the added value of the load capacity of this layer after the last layer is in obvious proportion to the original bearing capacity of the former soil layer; the bearing capacity of the B-layer generally maintains the original soil layer. Level, sometimes increase or decrease. From a practical point of view, it is mainly necessary to find out the situation of the A-layer and its depth; the understanding of the B-layer can reach a certain depth under normal circumstances.