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一、准备工作 (一)路基填实某大桥在架桥时架桥机活动地带的路基高度最高达30米以上,平均高度约28米左右。路基全部用黄土填筑,施工时在距离路基顶部三米以下部份,按一般方法施工,夯打是依照三落二的要求进行。在距离路基顶部三米高度范围內,采用重夯密打,要求密实度达到90％以上。架桥前,先用一台机车牵引一辆60吨平车,其上满载钢轨,加重至140吨,连同平车本身重20吨,共重160吨。平车共有4轴,每轴承重40吨,基
First, the preparatory work (a) fill a bridge subgrade fill bridge at the time of erecting machine activity zone subgrade height of up to 30 meters above average height of about 28 meters. Embankment filled with all the loess, construction at a distance of less than three meters from the top of the roadbed, according to the general method of construction, ramming is in accordance with the requirements of three fall. Within a distance of three meters from the top of the embankment, the use of heavy Tammi, requiring more than 90% density. Before the bridge, a 60-ton flat car was towed by a locomotive, loaded with rails and weighted up to 140 tons. Together with the flat car itself, it weighs 20 tons and weighs 160 tons. Flat car a total of 4 axes, each bearing 40 tons, based