The dynamic characteristics of dynamic compaction foundation soil show that saturated loose silty fine sand will liquefy, and the adjacent foundation will vibrate and sink due to traffic load or pile driving. Therefore, it is necessary to take measures to prevent ground liquefaction and improve its vibration characteristics to improve the seismic performance of the foundation. Through the above methods, we have done further reinforcement for the foundation, and the dynamic compaction construction will become more stable, which has a very good effect on the whole construction.

采用强夯法加固多孔隙、粗颗粒、非饱和土是基于动力密实的机理，即冲击型动力荷载，使土体中的孔隙减小，土体变得密实，从而提高地基土强度。非饱和土的夯实过程，就是土中的气相（空气）被挤出的过程，其夯实变形主要是由于土颗粒的相对位移引起。下边小编来说一说关于强夯机工作的面对的两种不同方式：

The dynamic compaction method is based on the dynamic compaction mechanism of porous, coarse-grained and unsaturated soil, i.e. impact dynamic load, which makes the pores in the soil decrease and the soil becomes dense, so as to improve the strength of foundation soil. The compaction process of unsaturated soil is the process in which the gas phase (air) in the soil is squeezed out. The compaction deformation is mainly caused by the relative displacement of soil particles. The following editor will talk about two different ways of dynamic compaction machine work

换填土层法：换填土层法，即将基底下一定深度范围的湿软土层挖去，换成强度较大的砂砾、碎石及其它性能稳定、无侵蚀性的土类，并予以压实。换填法是在北方常用的一种路基加固方法，广泛应用于各级公路施工中。换填材料的不同，其应力分布虽然不同，但其极限承载力比较接近，沉降特点也很相似，具代表性的是砂砾垫层。

Replacement fill layer method: the replacement fill layer method is to excavate the wet and soft soil layer under the base at a certain depth, and replace it with gravel, gravel and other soil with stable performance and no erosion, and compact it. Replacement method is a common method of subgrade reinforcement in North China, which is widely used in highway construction at all levels. Although the stress distribution of different replacement materials is different, the ultimate bearing capacity is close to each other, and the settlement characteristics are also very similar.

挤密法：挤密法是在强夯地基路基中打孔，在孔中灌砂、石土、灰土或石灰等材料，捣实而形成直径较大的桩体，利于横向挤压作用，使地基土粒彼此靠紧，空隙减少，孔被填满和挤压后形成桩体，桩体具有较高的承载能力使桩和原土组成复合地基，达到加固的目的。以上就是关于强夯地基的相关内容

Compaction method: the compaction method is to drill holes in the dynamic compaction foundation subgrade, fill the holes with sand, stone soil, lime soil or lime and other materials to form a pile with larger diameter, which is conducive to the lateral extrusion effect, so that the soil particles of the foundation are close to each other, and the gap is reduced. The pile body is formed after the hole is filled and squeezed. The pile body has a high bearing capacity, so that the pile and the original soil form a composite foundation to achieve the goal of reinforcement Yes. The above is about the dynamic compaction foundation related content