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新建的港口陆域工程的地基,大部分是“吹填造陆”,经过堆载预压,尚需回填不少于50厘米的回填料,经分层碾压后才能应用于工程。由于面积较大,在沿海地区要回填数以十万立方米计的素土是有一定困难的,目前大部分是用工业废渣(矿渣、粉煤灰)或山皮砂石土等来作填料,对于碾压后作为地基的质量指标,常用压实系数或干容重来控制。据《工业与民用建筑地基基础设计规范TJ7—74》规定,压实系数D_y为土的
The foundation of the newly built port land-based project is mostly “landfill by blow-fill”. After preloading, the backfill of not less than 50cm in thickness still needs to be backfilled and can be applied to the project after being layered and rolled. Due to the larger area, it is somewhat difficult to backfill hundreds of thousands of cubic meters of plain soil in coastal areas. At present, industrial waste (slag, fly ash) or mountain sand and gravel soil are mostly used as fillers , After rolling as a foundation quality indicators, commonly used compaction coefficient or dry weight to control. According to “industrial and civil building foundation design specifications TJ7-74” provides that the compaction coefficient D_y for the soil