Gravity type foundation structure and construction method thereof

Abstract

The invention discloses a gravity type foundation structure and a construction method thereof. A concrete cylinder-type pressure loading cabin is arranged on a concrete top cover; a cylinder structure formed by a concrete cylinder wall and a steel cylinder wall is arranged on the lower side of the concrete top cover; first pipelines are uniformly arranged in the concrete cylinder wall along the radial direction; and a steel subdivision plate is arranged in the internal space of the steel cylinder wall. The construction method comprises the following steps of: prefabricating the gravity type foundation structure on the land; transporting the whole foundation to a construction site in a floating mode, and performing self-weight sinking construction and negative pressure sinking construction; after the negative pressure sinking construction is stopped, performing groundbreaking sinking construction through the first pipelines; performing grouting operation through the first pipelines and second pipelines on sub-cabins; and filling heavy objects in the concrete cylinder-type pressure loading cabin, performing ballasting operation, and simultaneously performing riprap ballasting operation above the concrete top cover and at the periphery of the concrete cylinder-type pressure loading cabin. By the structure and the method, transportation and construction difficulties can be reduced, transportation and installation speeds can be increased, and the applicability to a soil body can be enhanced, so that a construction period is shortened, and engineering cost is substantially reduced.

Description

technical field [0001] The invention relates to a basic structure, in particular to a basic structure in port, ocean, water conservancy and bridge engineering and a construction method thereof. Background technique [0002] At present, in port, marine, water conservancy and bridge projects, the common foundation forms mainly include pile foundation, bracket foundation, gravity foundation and cylinder foundation. The gravity foundation is a structure that relies on the structure itself and the weight of the filler or ballast on it to resist external forces and maintain the building's anti-sliding and anti-tilting stability. Since its structural materials are generally concrete and sandstone materials, the material cost is relatively low , and generally in the form of shallow foundations, the construction cost is also low, so it is gradually recognized and widely used in the engineering field. [0003] However, due to the heavy weight, the gravity foundation is relatively dif...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing gravity foundation structure is relatively difficult to transport and construct. It provides a new type of gravity foundation structure and its construction method. Tank ballast can greatly reduce construction costs and significantly increase installation speed

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