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上海宝山钢铁总厂位于长江入海口冲积三角洲的海滨地区。地表以下几十米深的范围内均为淤泥质亚粘土或粘土地基,一般60m左右深处才见砂层。为适应工程的大型化和自动化生产工艺的严格要求,设计规定对高炉、转炉、初轧等设备基础和有高速行车的大型厂房基础及炼焦、回收、烧结、连铸等差异沉降要严格限制;有剧烈振动的设备基础,采用钢管桩承台式基础。一、二期工程总计需要打入钢管桩6万余根,沉桩深度约在60～70m左右。我单位在学习总结国内外打桩技术经验基础上,根据工程特点和现
Shanghai Baoshan Iron & Steel Works is located on the seafront of the alluvial delta of the Yangtze River estuary. The depths of tens of meters below the surface are muddy sub-clay or clay grounds, and sand layers are generally found only at a depth of about 60m. In order to adapt to the large-scale engineering and the strict requirements of automated production processes, the design regulations strictly limit the foundations of equipment such as blast furnaces, converters and blooming mills and the large-scale workshops with high-speed operation and differential settlement such as coking, recycling, sintering and continuous casting. The equipment foundation for severe vibration is based on the foundation of steel pipe piles. In the first and second phases of the project, a total of more than 60,000 steel pipe piles need to be driven, and the depth of the pile sinking is about 60 to 70 meters. Our company is learning and summarizing the experience of domestic and foreign piling techniques, according to the characteristics of the project and