The construction treatment of dynamic compaction project is to carry out necessary operations on the subgrade: machines and tools are used to fix and tamp the foundation. Adding lime soil into the subgrade and rolling in layers can improve the strength and flatness of the subgrade. In addition, the subgrade height shall comply with relevant standards.

一、验证强夯法的可靠性

1、 Verify the reliability of dynamic compaction method

强夯后加固效果的检测是检验施工成败的重要依据。强夯后应进行质量检查，检查加固效果是否符合设计要求，并进一步分析所采用的施工参数是否合理。目前，我国采用的试验方法有三种：静力触探试验、标准贯入试验和载荷板试验。

The detection of reinforcement effect after dynamic compaction is an important basis to test the success or failure of construction. After dynamic compaction, quality inspection shall be carried out to check whether the reinforcement effect meets the design requirements, and further analyze whether the adopted construction parameters are reasonable. At present, there are three test methods used in China: static cone penetration test, standard penetration test and load plate test.

静力触探试验采用锥头传感器反映地层变化。该方法具有准确、简便、快速、曲线连续等优点。强夯后，地层强度的变化规律得到了反映。

Cone head sensor is used to reflect the formation change in static cone penetration test. The method has the advantages of accuracy, simplicity, rapidity and continuous curve. After dynamic compaction, the variation law of formation strength is reflected.

标准贯入法是岩土工程中广泛应用的一种试验技术。属于动力触探，一般与钻井相结合。锤式能*肥料贯入仪的探杆被压入土壤中，根据贯入的困难程度很容易判断土壤的性质。

Standard penetration method is a test technology widely used in geotechnical engineering. It belongs to dynamic penetration, which is generally combined with drilling. The probe rod of the hammer energy * fertilizer penetrometer is pressed into the soil, and it is easy to judge the nature of the soil according to the difficulty of penetration.

基础荷载板向承重板上的地基土施加荷载，荷载通过承载板传递给基础。测量了地基土在自然条件下的变形特性，评价地基承载力。试验结果可为确定加筋地基承载力提供重要依据。

The foundation load plate applies load to the foundation soil on the bearing plate, and the load is transmitted to the foundation through the bearing plate. The deformation characteristics of foundation soil under natural conditions are measured and the bearing capacity of foundation is evaluated. The test results can provide an important basis for determining the bearing capacity of reinforced foundation.

采用强夯法处理软土路基后，地基条件得到了较好，效果明显。处理后的地基满足设计要求，降低工程造价。强夯法处理软土路基的施工质量关重要。虽然强夯法效果明显，但在强夯工程过程中会出现一些大小问题。因此，今后将该方法用于软土路基处理时，应严格控制施工过程，只有掌握施工中的各个环节，才能使该方案产生较好的经济效益和社会效益。

After the soft soil subgrade is treated by dynamic compaction method, the foundation conditions are better and the effect is obvious. The treated foundation meets the design requirements and reduces the project cost. The construction quality of soft soil subgrade treated by dynamic compaction method is very important. Although the effect of dynamic compaction method is obvious, there will be some size problems in the process of Dynamic Compaction Engineering. Therefore, when this method is applied to the treatment of soft soil subgrade in the future, the construction process should be strictly controlled. Only by mastering all links in the construction can the scheme produce better economic and social benefits.

二、强夯工程机械的比较

2、 Comparison of dynamic compaction construction machinery

强夯机械是强夯工程的基础。选择好的施工设备具有双重效果，强夯工程工作量减半。

Dynamic compaction machinery is the foundation of Dynamic Compaction Engineering. The selected construction equipment has dual effects, and the workload of dynamic compaction project is reduced by half.

1、 国外工程机械

1. Foreign construction machinery

欧洲大多数发达使用大吨位履带起重机提升夯锤。这种机械具有稳定性好、行走方便等优点。我国邻国日本采用轮胎起重机进行强夯施工，效果良好。

Most developed countries in Europe use large tonnage crawler cranes to lift rammers. This kind of machine has the advantages of good stability and convenient walking. China's neighbor Japan adopts tire crane for dynamic compaction construction, and the effect is good.

2、 国产工程机械

2. Domestic construction machinery

在大多数强夯工程中，仅使用小吨位起重机，仅使用滑轮组提升夯锤，并使用自动解耦装置使夯锤自由下落。自动解耦装置应具有足够的强度，施工时应灵活。为了防止落锤时起重机框架发生倾覆，应采取相应的防护措施。

In most dynamic compaction projects in China, only small tonnage cranes are used, only pulley blocks are used to lift the rammer, and automatic decoupling devices are used to make the rammer fall freely. The automatic decoupling device shall have sufficient strength and be flexible during construction. In order to prevent the crane frame from overturning when the hammer falls, corresponding protective measures shall be taken.