Construction platform and construction method of pebble bed large-scale deep water foundation

Abstract

The invention provides a construction platform and a construction method of a pebble bed large-scale deep water foundation. The construction platform comprises barges which are symmetrically arranged,wherein a space truss structure which is used for locating steel protective tubes is assembled between the top parts of the barges; a protective tube inserting platform is arranged at the top part ofthe space truss structure; multiple groups of first double I-shaped steel carrying pole beams are arranged between the top parts of adjacent steel protective tubes; platform hoisting equipment for lifting the whole platform is arranged between the first double I-shaped steel carrying pole beams and the space truss structure. Two large barges are utilized for constructing a protective tube placement space truss construction platform, the platform is wholly lifted after all protective tubes are in place, and the platform is then utilized as a pile foundation construction, cofferdam assembling and lowering platform, so that the construction efficiency is increased, and the construction quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of construction platforms on water, and in particular relates to a construction platform and method for large-scale deep-water foundations in pebble layers. Background technique [0002] At present, the geology is located in the pebble layer in the upper reaches of the Yangtze River, and the construction of large-scale deep-water foundation construction platforms is mainly to build pile foundation construction platforms and cofferdam construction platforms, flow operation, and step-by-step construction. The disadvantage is that the construction platform requires a large number of temporary components. , as a cofferdam assembly and lowering, and pile foundation construction platform, it brings construction complexity to the early installation and later dismantling; the pile foundation and cofferdam are constructed step by step, and it is often necessary to avoid two flood periods to complete the construction, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the geology is located in the pebble layer in the upper reaches of the Yangtze River, and the construction of large-scale deep-water foundation construction platforms is mainly to build pile foundation construction platforms and cofferdam construction platforms, flow operation, and step-by-step construction. The disadvantage is that the construction platform requires a large number of temporary components. , as a cofferdam assembly and lowering, and pile foundation construction platform, it brings construction complexity to the early installation and later dismantling; the pile foundation and cofferdam are constructed step by step, and it is often necessary to avoid two flood periods to complete the construction, which affects the construction period ; The site of the pile foundation construction platform is limited, and multiple hole-forming drilling rigs cannot be deployed, requiring multiple cycles of pile foundation construction, which affects the construction period; multiple floating cranes are required during the erection process, and there is a lack of large-scale floating cranes in inland rivers; During the implantation process of the weir platform under the cofferdam, problems such as slow sinking, stagnation, overspeed, sudden settlement, and construction deviation are prone to occur. control, high construction risk

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