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Lifting Method of Balanced Ballast at Four Corners of Leveling Ship

A technology of leveling boat and four corners is applied in the field of equalized ballast lifting of four corners of leveling boats, which can solve the problems of difficulty in ensuring the stability of the hull platform and the safety of the laying precision of the foundation bed, and achieves the guarantee of laying precision, high work efficiency and time saving. Effect

Active Publication Date: 2016-02-03
CCCC FIRST HARBOR ENG +3
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AI Technical Summary

Problems solved by technology

During the riprap leveling construction of the foundation bed, the hull platform needs to be lifted to the construction height. Since the hull platform floating on the sea / river surface is greatly affected by natural conditions such as waves and silt, it is difficult to ensure the hull platform during the lifting process. Stability and safety and bed laying accuracy

Method used

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  • Lifting Method of Balanced Ballast at Four Corners of Leveling Ship
  • Lifting Method of Balanced Ballast at Four Corners of Leveling Ship

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] Such as figure 1 , a method for lifting equalized ballast at the four corners of a leveled ship of the present invention, comprising the following steps: S1, lowering the legs 2 on the four corners of the hull platform 1 to the mud surface, and ballasting water to the ballast tank 3 on the hull platform 1; S2. The legs 2 on the four corners of the hull platform 1 enter the mud at the same time, and continue to apply loads to the legs 2 until the legs 2 are stabilized; S3. Lift the hull platform 1 and ensure that the bottom of the ship does not leave the water surface, and then stabilize the legs 2; S4 1. Raise the hull platform 1 to the bottom of the ship to leave ...

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Abstract

The invention relates to an underwater foundation bed riprapping and leveling technology, and discloses a four-corner balanced ballasting and lifting method for a leveling ship. The method comprises the following steps of: S1, putting down pile legs on four corners of a ship body platform until reaching a mud surface, and injecting ballast water into a ballast tank on the ship body platform; S2, simultaneously putting the pile legs on the four corners of the ship body platform into mud, and continuously applying load to the pile legs until being stable; S3, lifting the ship body platform and ensuring that the bottom of the ship does not leave the water, and then stabilizing the pile legs; S4, lifting the ship body platform until the bottom of the ship leaves the water , and stabilizing the pile legs; S5, discharging the ballast water; S4, lifting the ship body platform to a construction height position. Distance for lifting the ship body platform to the draught position of the ship body platform in the step S3 may reach 1-2m. The four-corner balanced ballasting and lifting method for the leveling ship is high in work efficiency, and can ensure the stability and safety in the process of lifting the ship body platform and the paving accuracy of the foundation bed.

Description

technical field [0001] The invention relates to a stone riprap leveling technology for an underwater foundation bed, in particular to a lifting method for equalizing ballast at four corners of a leveling ship. Background technique [0002] During the laying and leveling construction of the offshore (Hanoi) immersed tube tunnel foundation, before the immersed tube is installed, it is necessary to carry out riprap leveling in the excavated foundation groove, and then float the prefabricated immersed tube to the upper part of the foundation bed and sink it Install. The riprap foundation bed is used to replace the original soft soil layer to improve the bearing capacity of the foundation, so that the load from the upper structure can be evenly transmitted to the foundation to meet the requirements of deformation and stability, and make full use of its water permeability to reduce The water level difference between the front and back of the building avoids seepage and protects t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/02
Inventor 陈刚关秋枫尹海卿刘亚平翟世鸿高纪兵国强石书元刘徳进宿发强杨勤张学俊王学军张建军曲俐俐魏红波
Owner CCCC FIRST HARBOR ENG
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