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在地质情况复杂、土层起伏很大的湿陷性黄土场地,当建筑物变形控制要求较高,需全部消除场地湿陷性时,可采用不同夯击能进行强夯;当建筑物变形控制要求不高,仅需消除基础范围内的全部湿陷和基础范围外部分消除湿陷性时,可通过强夯消除室内地面的部分湿陷,采用强夯和挤密联合法完全消除基础下的地基土湿陷。通过方案对比,分析了两种方案的特点及其适用范围,结合实际工程可知,应调整湿陷性黄土含水量,以取得最佳的强夯效果。
In collapsible loess sites with complex geological conditions and undulating soil layers, dynamic compaction can be carried out with different tamping forces when the deformation control requirements of buildings are high and the collapsibility of the site needs to be completely eliminated. When building deformation control The requirement is not high, only to eliminate all the foundation within the collapse and collapse of the basic part of the outside of the subsidence, by dynamic compaction to eliminate part of the indoor ground collapse, using dynamic compaction and compaction method to completely eliminate the foundation Foundation soil collapse. Through the comparison of the schemes, the characteristics and the applicable scope of the two schemes are analyzed. According to the actual project, the water content of collapsible loess should be adjusted to obtain the best dynamic compaction effect.