Pile foundation bucket foundation and construction method thereof

Abstract

The invention discloses a construction method of the pile foundation bucket foundation. The foundation consists of a bucket body and a pile foundation; the bucket body comprises an upper wall body, a lower wall body, a cover plate, an upper baffle and a lower baffle. The cover plate is arranged at the upper part of the lower wall body, and the lower baffle is arranged inside the lower wall body, so as to form a lower wall body cavity. The upper wall body is arranged on the cover plate, the upper baffle is arranged inside the cover plate, so as to form an upper wall body cavity. A water-air valve and a concrete pouring valve which are communicated with the upper wall body cavity and the lower wall body cavity are arranged on the cover plate. The bucket body is sunk after the construction of the pile foundation, injecting water into the upper wall body cavity and absorbing water by the lower wall body cavity are main sinking means, and when the bucket body reaches a designed penetrating depth, bottom sealing concrete and in-bucket concrete are poured into the lower wall body cavity, so that a pile is connected with the bucket body. The pile foundation bucket foundation is suitable for being served as a deep-water bridge foundation on the condition of a thick covering layer, gives full play to the characteristics of high vertical bearing capability of the file foundation and convenience in construction of the bucket foundation, has high applicability, simple construction technology, small post-construction settlement, and lower requirement on offshore construction equipment, does not require the building of large construction auxiliary facilities, and is low in construction cost.

Description

technical field [0001] The invention relates to a bridge deep-water foundation, in particular to a pile foundation barrel foundation and a construction method thereof. Background technique [0002] Currently widely used bridge foundation forms include setting foundation, caisson foundation and pile foundation. [0003] The foundation is prefabricated as a whole, and the foundation is placed on a strictly treated foundation bed by floating or hoisting. This type of foundation has been widely used in recent years, but it has high requirements for the foundation bed and is suitable for waters with good geological conditions. It needs to be cleared Weak and bad surface or foundation reinforcement treatment, sometimes it is even necessary to excavate to the rock formation, and finely grind the rock surface, and clean up debris residues to ensure the flatness of the foundation bed. In addition, setting the foundation requires high construction technology and requires a variety of...

AI Technical Summary

Problems solved by technology

[0006] As a new type of foundation, the barrel foundation has been used in marine engineering, but due to its weak compressive bearing capacity, it cannot be used as a large bridge foundation at present.

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