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某住宅楼 ,7层 ,砖砌体结构 ,钢筋混凝土条基 ,建筑场地在老城区 ,地面以下杂填土深约5m ,工程地质报告提供的地基承载力仅85kPa,且从土工试验数据看 ,土质松散 ,密实性极差 ,不能做天然地基。场地工程地质特征 :人工填土层由粉土夹碎瓦块组成 ,土质稍湿至湿 ,呈可塑至软塑状 ,土层厚3.60～5.00m ,其承载力标准值为85～110kPa。其下为粉土层 ,土质稍湿至湿 ,呈可塑至软塑状 ,上下层土均为中压缩性土 ,下层土承载力为140～170kPa
A residential building, 7 floors, brick structure, reinforced concrete strip base, the construction site in the old city, the ground fill the following miscellaneous earth depth of about 5m, engineering geological reports to provide the foundation bearing capacity of only 85kPa, and from the geotechnical test data, Loose soil, poor compactness, can not do natural foundation. Geological features of site construction: The artificial fill layer is composed of silt and crushed tiles, and the soil is slightly wet to wet with plasticity to soft plastic shape. The thickness of the soil layer is 3.60 ~ 5.00m, and the standard bearing capacity is 85 ~ 110kPa. Under the silt layer, the soil slightly wet to wet, was plastic to soft plastic, the upper and lower soil are medium-compressive soil, the lower soil bearing capacity of 140 ~ 170kPa