论文部分内容阅读
大型炼油化工装置起吊施工中采用的锚坑受力大,习惯上使用全埋式坑锚。然而,近年来在沿海、沿江地区建厂,大量遇到地下水位高且地层软弱,无法挖坑的情况。为此,创造了插座式压重地锚的新方法。1975～1977年,我公司在武汉石化厂冲填土地层上进行吊装施工时,因该地区表层为均匀分布的冲填土,土层厚度一般均在4～5米,1米左右的表层尚具有承载能力,地下水位在地表以下1米左右.1米以下就是浆状淤泥,无法埋设大型吊装的坑锚,只能考虑利用地表硬壳,随采用压重将钢制锚腿压入硬壳层的方法,使之承受拉力,就是这种新型地锚(如图1)。并用该地锚承担过武汉石化厂吊重192吨
The anchor pit used in the lifting construction of a large-scale oil refinery and chemical plant has a large force, and it is customary to use a fully-buried pit anchor. However, in recent years, factories have been built along the coast and along the Yangtze River, and there have been a large number of cases where the groundwater level is high and the formation is weak and it is impossible to dig a pit. For this reason, a new method of plug-in anchoring was created. From 1975 to 1977, when the company carried out the lifting construction on the fill layer of Wuhan Petrochemical Plant, the surface layer of the area was filled with evenly-filled soil. The thickness of the soil layer was generally 4 to 5 meters, and the surface layer was about 1 meter. With a bearing capacity, the groundwater level is about 1 meter below the surface. Below 1 meter is a slurry sludge, can not be buried large anchor bolts, only to consider the use of surface hard shell, with the use of pressure to the steel anchor legs pressed into the hard shell The layer method, so that it is subjected to pull, is the new type of anchor (Figure 1). And used this anchor to bear 192 tons of lifting weight in Wuhan Petrochemical Plant