Device for underwater pile foundation construction platform convertible in floating and fixing

Abstract

The invention discloses a device for an underwater pile foundation construction platform convertible in floating and fixing and belongs to the field of bridge construction. The device comprises a two-barge supporting device body, a shape steel beret slice combination construction platform device body, a positioning device body, a hole guiding and rock embedding device body and a system conversion device body. Two barges are parallelly connected to be the floating supporting device body, a shape steel beret slice combination construction platform is assembled on the floating supporting device body, and the floating supporting device body and the shape steel beret slice combination construction platform are fixedly connected to form an overwater floating construction platform device body; hole guiding is conducted through a percussion drill, and a pile foundation steel casing is embedded into a basement rock stratum through the percussion drill assisted with hoisting equipment and a vibration hammer; the shape steel beret slice combination construction platform above a floating platform is made to fall onto bracket supporting device bodies on the two sides of the pile foundation steel casing to complete platform system conversion by increasing the immersion depth of the two-barge supporting device body; and finally pile foundation construction is conducted. Under the conditions that the site condition is limited, waterway regulation is strict, and the geological condition is unfavorable, by using the device, the effects of being quick in starting is achieved, construction is easy and convenient, and the construction period is greatly shortened; and meanwhile, the material investment amount is small, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of bridge substructure construction devices, in particular to a floating, fixed and convertible underwater pile foundation construction platform device. Background technique [0002] In the construction of pile foundations in the substructure of the bridge, the problem of the construction platform needs to be solved first. Generally, various methods are used to build islands with soil cofferdams, erect steel pipe pile construction platforms in situ above the water, or use steel cofferdams to construct construction platforms. Affected by factors such as water level dynamic fluctuations, water traffic control, waterway management, and surrounding topographical environment, these construction methods have certain limitations and inconveniences, and are poor in safety, economy, and environmental protection. Contents of the invention [0003] The purpose of the present invention is to provide a new type of pile foundatio...

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Problems solved by technology

[0002] In the construction of pile foundations in the substructure of the bridge, the problem of the construction platform needs to be solved first. Generally, various methods are used to build islands with soil cofferdams, erect steel pipe pile construction platforms in situ above the water, or use steel cofferdams to construct construction platforms. Affected by factors such as dynamic fluctuations in water levels, water traffic control, waterway management, and surrounding terrain, these construction methods have certain limitations and inconveniences, and poor safety, economy, and environmental protection.

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