Cofferdam structure with soft soil filling and vacuum consolidation combined

Abstract

The invention relates to a cofferdam structure with soft soil filling and vacuum consolidation combined. The cofferdam structure comprises air exhaust and drainage pipe networks paved on the original mud surface; each pipe network is filled with large-size mud bags; the mud bags are vacuumized, and then the processes above are repeated in sequence till the mud bags on the topmost layer are constructed. When the soil consolidation degrees in the mud bags meet the design requirements, vacuum pumps on the pipe networks are closed; when the solid consolidation degrees of all the mud bags meet the design requirements, the vacuum pumps on the pipe networks are closed; the vacuum pumps are sequentially closed till the vacuum pump on the pipe network of the topmost layer is closed, and then the cofferdam structure is finished. The cofferdam structure is characterized in that air exhaust and drainage pipe networks and the mud bags are arranged in a staggered layering manner. Soft soil in the mud bags is fast consolidated under the combined action of gravity pressure and vacuum loading to form a structure body with certain strength. The cofferdam structure has the characteristics that local materials can be used, is economic and environment-friendly and is fast to form.

Description

technical field [0001] The invention belongs to an enclosure structure, and relates to an enclosure structure combined with soft soil filling and vacuum consolidation. Background technique [0002] In recent years, with the rapid development of my country's port construction, the phenomenon of insufficient land resources has become increasingly prominent. Building enclosures and breakwaters on soft soil foundations, reclamation of sea land, and building wharves have become important means for most port cities to solve industrial land. . As the main body of the sea reclamation project, the enclosure is also the main engineering measure for coastal protection. Enclosures generally have larger cross-sectional areas and larger engineering volumes. How to choose a reasonable structure type is related to the convenience of the enclosure construction, the length of the construction period, and whether it is economical and reasonable. [0003] Large bag-filled sand embankments are...

AI Technical Summary

Problems solved by technology

Sand and gravel materials need to be purchased and transported over long distances, and the cost is relatively high after arriving at the port. The port construction department has to invest a large amount of construction funds in this project every year

Images