1）通过真空预压，在场地先期加载预压，逐渐固结，使地基土先期发生绝 大

1) Through vacuum preloading, the preload is preloaded on the site and gradually consolidated, so that most of the foundation soil settlement will occur in the early stage, and the overall settlement will be controlled later; <br>2) Simulate the load distribution under the use conditions to make the foundation soil settle in advance Uneven settlement occurs at the time, and the uneven settlement at the later stage after the completion of the floor construction can be controlled; <br>3) The combined preload with the vacuum or the overburden load is used to form an overload preload relative to the additional load at the later stage to further improve the foundation treatment The additional load at the time can increase the construction settlement as much as possible, so that the treated soil and the use load form super-consolidated soil, and further reduce the post-construction settlement under the use conditions. <br>4) After the vacuum preloading is completed, backfill the earth and carry out 4 to 5 layered impact roller compactions on the entire area to further compact the shallow fill and further increase the strength, thereby improving the foundation bearing capacity and the rigidity of the soil.

1) Through vacuum pre-pressure, pre-load pre-load pre-load at the site, gradually solidified, so that the foundation soil in advance occurred most of the settlement, the late overall settlement can be controlled;<br>2) Simulate the load distribution under the condition of use, so that the ground soil is not evenly settled when it settles in advance, and the uneven settlement can be controlled in the late period after the construction of the floor;<br>3) Using the load of filling or covering water load, and vacuum to form a joint pre-pressure, relative to the later additional load to form an overload pre-pressure, further improve the additional load when the foundation treatment, as much as possible to improve the construction subsidence, so that the treatment of the post-soil and the use of load conditions to form an over-solid body, further reduce the use of the conditions of work subsidence.<br>4) After the vacuum pre-pressure is over, the filling backfill, and the whole area 4 to 5 times layered impact crushing, so that the shallow soil filling further compact, the strength further improved, thereby improving the base carrying capacity and soil stiffness.

1) By means of vacuum preloading, preloading is carried out in the site in advance and gradually consolidated, so that most of the settlement of the foundation soil occurs in the early stage and the overall settlement in the later stage is controllable;<br>2) By simulating the load distribution under the use condition, the uneven settlement of the foundation soil in the early stage can be produced, and the uneven settlement in the later stage can be controlled after the construction of the terrace;<br>3) Combined preloading is formed by filling load or covering water load and vacuum. Compared with the later additional load, overload preloading is formed, which further improves the additional load during foundation treatment and improves the construction settlement as much as possible, so that the overconsolidated soil is formed under the condition of treated soil and service load, and further reduces the post construction settlement under the condition of service.<br>4) After the completion of vacuum preloading, the backfill shall be carried out, and the whole area shall be impacted and rolled for 4-5 times in layers, so that the shallow fill can be further compacted and the strength can be further improved, so as to improve the bearing capacity of the foundation and the rigidity of the soil.<br>