Foundation dynamic compaction construction has been widely used in the foundation reinforcement projects such as highways, railways, airports, stations, large industrial areas, port reclamation and so on. Benefits: short construction period, good function and low cost. The influence of unit tamping energy and tamping times on dynamic compaction.

夯能的巨细与传达方法。地基强夯夯击能的巨细对强夯的有用加固深度具有显着影响。夯锤夯击发生颤动波，颤动波向各个方向传达，它是以振荡能量体现的，能量越大传达的间隔越大，地基强夯加固的规模就越大。

The size and transmission method of tamping energy. The magnitude of dynamic compaction energy has a significant impact on the useful reinforcement depth of dynamic compaction. The vibration wave occurs when the rammer is tamped, and the vibration wave is transmitted to all directions. It is reflected in the oscillation energy. The greater the energy is, the greater the transmission interval is, and the larger the scale of foundation dynamic compaction reinforcement is.

夯点下土层的加固通常是由地表逐渐向下打开，一起也逐渐向邻近打开，因而，在必定限内，夯击次数的多其加固程度通常比夯击次数少的好。

The reinforcement of the soil layer under the tamping point is usually gradually opened downward from the surface, and also gradually opened to the adjacent. Therefore, within a certain limit, the reinforcement degree of more tamping times is usually better than less tamping times.

地基强夯在作业情况时，起重臂仰角应置于65°，梯形门架支腿不得前后错位，门架支腿在未支稳垫实前，不得提锤。门架上部应向车身歪斜5°左右，坚持门架和起重臂成三角形状。

During the operation of foundation dynamic compaction, the elevation angle of the jib shall be set at 65 °, and the trapezoidal gantry legs shall not be staggered back and forth. The gantry legs shall not lift the hammer before they are firmly supported and padded. The upper part of the gantry shall be inclined about 5 ° to the vehicle body, and the gantry and jib shall be in a triangular shape.

转化夯位后，应从头检查门架支腿，供认安靖牢靠，然后再将锤前进100～300㎜，检查整机的稳定性，供认牢靠后，方可作业。当地基强夯夯锤留有相应的通气孔在作业中呈现阻塞现象时，应随时拾掇。但阻挠在锤下进行拾掇。

After the tamping position is changed, the outrigger of the gantry shall be checked from the beginning to admit that it is safe and reliable, and then the hammer shall be advanced by 100 ~ 300 mm to check the stability of the whole machine. The operation can be carried out only after the confirmation is firm. Corresponding vent holes shall be reserved for the local foundation dynamic rammer. When there is blockage during operation, it shall be cleaned up at any time. But obstruct the pick-up under the hammer.

当夯坑内有积水或因粘土发生的锤底吸附力大时，应选用方法清扫，不得强行提锤。拼装门架拆门架时应把吊杆和门架放倒在地面上拼装和拆开，并检查各个联接部位螺栓、钢丝绳磨损情况。钢丝绳按规矩要求应及时替换。

When there is ponding in the tamping pit or the adsorption force of the hammer bottom caused by clay is large, the method shall be selected for cleaning, and the hammer shall not be lifted by force. Assemble and disassemble the gantry. When disassembling the gantry, put the suspender and gantry on the ground for assembly and disassembly, and check the wear of bolts and steel wire ropes at each connecting part. The steel wire rope shall be replaced in time according to the requirements of the rules.

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