The layout of tamping points is generally square. The setting out must be accurate and symmetrically arranged within the treatment scope according to the center line of the subgrade. The main compaction point in the middle row should be placed on the central line, and the auxiliary compaction point should be placed in the middle of the four adjacent main compaction points. The dynamic compaction machine should also be arranged in a square shape.
夯击能量严格控制夯击能量不小于设计要求。
The tamping energy shall be strictly controlled and not less than the design requirements.
夯击次数和沉降量认真记录同一夯点的夯击次数和同一夯击沉降量。
The number of tamping and settlement shall be recorded carefully, and the number of tamping at the same tamping point and the settlement reduction of the same tamping point shall be carefully recorded.
夯击遍数严格控制夯击遍数符合设计要求,且两遍之间的时间间隔满足试夯结果,以保证地下水位或水压力降低或消散到一定范围。
The number of tamping times shall be strictly controlled to meet the design requirements, and the time interval between the two times shall meet the test compaction results, so as to ensure that the groundwater level or water pressure can be reduced or dissipated to a certain range.
其他要点夯击时,夯击点中心位移偏差应小于150㎜;当夯坑底倾斜大于30°时,应将夯坑填平后再进行夯击;主夯和副夯后应将夯坑推平;主夯钱和满夯后整平所的高差,即为总夯沉量。满夯时,夯点彼此搭接锤底面积的1/4.
When tamping other key points, the center displacement deviation of tamping point shall be less than 150 mm; when the inclination of the bottom of tamping pit is greater than 30 °, the tamping pit shall be filled and leveled before tamping; after the main tamping and auxiliary tamping, the tamping pit shall be leveled; the height difference between the main tamping money and the leveling station after full compaction is the total tamping settlement. When full ramming, the tamping points overlap with each other by 1 / 4 of the hammer bottom area
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The above contents are compiled by Bumblebee, a rental manufacturer of dynamic compaction machine. I hope it can help you. For more details, please pay attention to: http://www.sddhfjx.cn