Drainage consolidation construction method for treating soft soil foundation by container stacking loading

Abstract

The invention relates to a drainage consolidation construction method for treating soft soil foundation by container stacking loading, belonging to the technical field of water containing soft soil foundation drainage and consolidation construction. The existing method directly takes earth and rock materials as stacking loading substances, has high transportation expenses and insufficient stacking loading pressure, and construction fails to satisfy the engineering project with higher requirements on bearing capacity required by the foundation. The method comprises the following construction steps: laying base materials, inserting drainage components, stacking and loading a box container on the base materials for prepressing, discharging ponding out of the foundation and the like. In the invention, the self weight of the box container and the weight of the stacking loading substances form a stacking loading monomer which has regular shapes, can be carried and is suitable for long distance transportation and stacking. According to the construction requirement of the foundation to be treated, the method can achieve flexible assembly, repeated use, reduced construction cost, high construction efficiency, clean process and small pollution; the stacking and unloading height significantly improves and realizes balanced stress of the foundation; and the foundation consolidated by the method has good consistency and high consolidation strength, thus facilitating to accurately calculate the stacking loading pressure of a unit area.

Description

【Technical field】 [0001] The invention relates to a construction method for piled-up treatment of foundation, which belongs to the technical field of soft soil foundation drainage and consolidation construction. 【Background technique】 [0002] Before the construction of various civil works, it is usually necessary to carry out drainage and consolidation treatment on the base to make the base meet the strength requirements of the construction. The commonly used drainage consolidation construction method is the surcharge preloading method: lay a sand layer, a gravel layer or a sand layer on the upper part of the foundation soil to be treated, and then insert the plastic drainage components vertically in the foundation soil, and the drainage components The upper part contacts and connects with the sand layer, gravel layer or sand grain layer to form a drainage channel, and then stacks earth and stone materials on the sand layer, gravel layer or sand grain layer, and uses the we...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the granularity of soil and stone materials, the stacking height of soil and stone materials is limited, and it is impossible to load unlimitedly. Therefore, it is difficult to achieve the design pressure by direct stacking, and the design load quality cannot be guaranteed. For example, the pressure per unit area needs to reach 10 tons, about 10 meters of earth and rock need to be stacked, and the stacked load can only be in the shape of a pyramid ( figure 1 shown)

Such a surcharge structure causes the foundation to be compressed in a V shape, with uneven force and unbalanced foundation settlement, which will pose a threat to the subsequent surface construction, and even cause the building to tilt and collapse in severe cases.

If the tamping process is implemented at the same time during the stacking process, it can be stacked into a trapezoidal ( figure 2 shown), but it is difficult to remove the compacted piles, especially when the foundation is treated in different areas, the construction cost of excavating, transporting, and re-tamping the piled soil and rocks is very high.

[0005] 2. Since the soil and stone materials in the prior art are all piled in the open air, the preloading time is long, and in case of heavy rain or windy weather during the construction period, the pile carrier will be scoured and even collapsed

[0006] 3. In some projects, there is no need to fill up the foundation. If the transported earth and stone materials are to be used for heaping, after the drainage and consolidation construction is completed, a large amount of these heaped earth and stone materials must be transported away. In this case Under the circumstances, the material cost of earth and stone materials, loading and unloading and transportation costs for entering and exiting the site are very high, which makes the construction cost of the project very high, and will cause environmental pollution and waste of resources.

[0007] 4. The construction site of some projects does not have a large amount of earth and rocks, and the earth and rocks cannot be used as a stockpile, so rubber water bags or reservoirs are used for stockpiling, but the water levels of water bags and reservoirs are limited , the weight of the stacked load is light, and the effect of drainage and consolidation is poor

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