阅读说明：本技术 一种带施工吸力筒的导管架及其施工方法 (Jacket with construction suction tube and construction method thereof ) 是由 刘闻达 王鹍 熊翱 范振庆 徐元超 陈举文 尤毅 李壮伟 李弘毅 胡浪 胡斌 于 2019-12-26 设计创作，主要内容包括：本发明公开了一种带施工吸力筒的导管架及其施工方法,包括呈正多边形布置的施工吸力筒、施工吸力筒上部的桁架导管架体、固定在施工吸力筒上的外置桩套筒。本发明施工时,先在工厂制作桁架导管架体、施工吸力筒、上下蹄型轭板、桩套、剪切板,并将所有构件焊接为整体导管架,将整体导管架定位吊放至海底,在各导管架体立柱中抽真空使之整体下沉,然后调平整体导管架体,再穿过桩套打入受力桩,最后将受力桩与桩套通过环形灌浆连接,从而形成稳定的基础。采用本发明的施工方法,利用施工吸力筒在施工期稳定导管架,省去了“后桩法”导管架所需要的夹桩器及相关施工环节,施工快捷、安全,经济性较好。(The invention discloses a jacket with a construction suction tube and a construction method thereof. During construction, a truss guide pipe frame body, a construction suction cylinder, upper and lower shoe-shaped yoke plates, a pile sleeve and a shear plate are manufactured in a factory, all components are welded into an integral guide pipe frame, the integral guide pipe frame is positioned and hung to the seabed, each guide pipe frame body upright post is vacuumized to enable the integral guide pipe frame body to sink integrally, then the integral guide pipe frame body is leveled, a stress pile is driven into the integral guide pipe frame body through the pile sleeve, and finally the stress pile and the pile sleeve are connected through annular grouting, so that a stable foundation is formed. By adopting the construction method, the jacket is stabilized by the construction suction tube in the construction period, and pile clamping devices and related construction links required by the jacket in a post-pile method are omitted, so that the construction is rapid and safe, and the economical efficiency is better.)

1. The utility model provides a jacket of area construction suction section of thick bamboo which characterized in that: the construction suction tube comprises a construction suction tube which is arranged in a regular polygon shape, a truss guide tube frame body (8) which is connected with the upper end of the construction suction tube in a sealing way, and one or more external pile sleeves which are fixed on the construction suction tube, wherein the upper section of each pile sleeve is a horn-shaped tube (3-1), the lower section of each pile sleeve is a cylinder (3-2), the part above the mud surface in the construction suction tube is a steel tube (1-1), and the part below the mud surface is a steel tube or a thin-wall reinforced concrete cylinder (1-2).

2. The jacket with a construction suction vessel of claim 1, wherein: the pile sleeve is fixedly connected with a steel cylinder (1-1) of the construction suction cylinder through an upper shoe yoke plate (2-1), a lower shoe yoke plate (2-2) and a plurality of shearing plates (4).

3. The jacket with a construction suction vessel according to claim 1 or 2, wherein: and a cylinder (3-2) in the pile sleeve enters a mud surface and is sealed by adopting underwater self-protecting concrete (6), and the pile sleeve is connected with a pile foundation (7) through annular grouting.

4. A method of constructing a jacket with a construction suction vessel according to claim 3, comprising the steps of:

s1, processing and manufacturing a truss conduit frame body (8), a construction suction barrel, a horseshoe yoke plate, a pile sleeve and a shear plate (4) in a factory, and assembling and connecting all the components on land to form an integral conduit frame;

s2, carrying out integral jacket hoisting and positioning construction in the engineering area by using a crane ship or a construction platform, and placing on the seabed;

s3, vacuumizing in a truss jacket (8) upright post to enable the whole jacket to sink, and making a construction suction cylinder (1) enter a seabed soil layer to reach the design and elevation requirements and perpendicularity preliminarily;

s4, finely leveling the whole jacket to the verticality and elevation required by the design;

s5, driving the pile foundation (7) into the seabed soil layer through the pile sleeve, and meeting the design requirements;

s6, pouring underwater self-protecting concrete (6) between a cylinder (3-2) in a pile sleeve at the lower part of the lower shoe-shaped yoke plate (2-2) and a pile foundation (7) for bottom sealing;

s7, connecting the pile foundation (7) and the pile sleeve through annular grouting (5);

and S8, finishing construction.

Technical Field

The invention relates to the field of ocean engineering, in particular to a jacket and a construction method thereof.

Background

Among the types of structures underlying marine engineering, jacket is the most common form of foundation structure that functions to provide support and maintain stability to the topside, and is currently primarily a steel truss. The jacket is used as the foundation of the fan, leveling is needed in the installation process, and the horizontal precision directly influences various performances of the offshore fan, such as safety, adaptability, service life and the like. The leveling and mounting process of the deep water jacket comprises a leveling stage and a clamping stage, during construction, a special leveling and clamping system is needed for leveling and stabilizing the jacket, for example, a jacket adopting a 'post-pile method' needs to use a pile clamping device and also needs to relate to a related pile clamping construction link, and the deep water jacket is complex in construction and high in construction difficulty.

The above discussion is intended to introduce the reader to various aspects of art that may be related to various aspects of the present invention, which are described and/or claimed below, and is believed to be helpful in providing the reader with background information to facilitate a better understanding of the present invention.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a jacket with a construction suction tube, which can reduce the construction difficulty.

Another object of the present invention is to provide a method of constructing a jacket with a construction suction tube.

In order to achieve the purpose, the invention adopts the technical scheme that:

the jacket with the construction suction tube comprises the construction suction tube arranged in a regular polygon shape, a truss guide tube frame body connected with the upper end of the construction suction tube in a sealing mode, and one or more external pile sleeves fixed on the construction suction tube, wherein the upper section of each pile sleeve is a horn-shaped tube, the lower section of each pile sleeve is a cylinder, the part above the mud surface in the construction suction tube is a steel tube, and the part below the mud surface is a steel tube or a thin-wall reinforced concrete cylinder.

Preferably, the pile sleeve and the steel cylinder of the construction suction cylinder are fixedly connected through an upper shoe yoke plate, a lower shoe yoke plate and a plurality of shear plates.

Preferably, the cylinder in the pile sleeve enters the mud surface and is sealed by underwater self-protecting concrete, and the pile sleeve is connected with the pile foundation through annular grouting.

The invention also provides a construction method of the jacket with the construction suction tube, which is characterized by comprising the following steps:

s1, processing and manufacturing a truss conduit frame body, a construction suction barrel, a horseshoe yoke plate, a pile sleeve and a shear plate in a factory, and assembling and connecting all the components to form an integral conduit frame on land;

s2, carrying out integral jacket hoisting and positioning construction in the engineering area by using a crane ship or a construction platform, and placing on the seabed;

s3, vacuumizing in the truss jacket stand column to enable the whole jacket to sink, and enabling the construction suction cylinder to enter a seabed soil layer to reach the design and elevation requirements and perpendicularity preliminarily;

s4, finely leveling the whole jacket to the verticality and elevation required by the design;

s5, driving the pile foundation into the seabed soil layer through the pile sleeve, and meeting the design requirements;

s6, pouring underwater self-protecting concrete between the pile sleeve at the lower part of the lower shoe-shaped yoke plate and the pile foundation to seal the bottom;

s7, connecting the pile foundation and the pile sleeve through annular grouting;

and S8, finishing construction.

The invention has the beneficial effects that: the foundation components can be prefabricated and assembled in a factory, placed, leveled and fixed during field construction, pile foundations are constructed through the external pile sleeves on the construction suction cylinders, and grouting connection is performed, so that the construction difficulties of leveling, stabilization and the like of the offshore jacket foundation are greatly reduced, the construction is rapid and safe, the economy is good, and the application prospect in ocean engineering, particularly offshore wind power engineering is wide.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

Fig. 1 is a schematic elevation view after completion of construction in embodiment 1 of the present invention.

Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic cross-sectional view of B-B in fig. 1.

Fig. 4 is a schematic view of a pile sleeve of example 2 of the present invention in the form of an elongate flare.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it is to be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.

As shown in fig. 1, 2 and 3, the jacket with the construction suction tube comprises the construction suction tube arranged in a regular polygon shape, a truss jacket body 8 hermetically connected with the upper end of the construction suction tube, and one or more external pile sleeves fixed on the construction suction tube, wherein the upper section of each pile sleeve is a trumpet tube 3-1, the lower section of each pile sleeve is a cylinder 3-2, the part above the mud surface in the construction suction tube is a steel tube 1-1, and the part below the mud surface is a steel tube or a thin-wall reinforced concrete cylinder 1-2.

In this embodiment, the pile sleeve and the steel cylinder 1-1 of the construction suction cylinder are fixedly connected through an upper shoe yoke plate 2-1, a lower shoe yoke plate 2-2 and a plurality of shear plates 4. The lower pile sleeve cylinder 3-2 enters the mud surface and is sealed by adopting underwater self-protecting concrete 6, and the cylinder 3-2 of the pile sleeve is connected with the pile foundation 7 through annular grouting.

In the embodiment, the upper part of the pile sleeve adopts the horn-shaped cylinder 3-1, so that the guiding effect during pile foundation construction is achieved.

Of course, in actual production, the construction suction tube can be designed into a variable cross section type, such as the upper part has thicker wall thickness and the lower part has thinner wall thickness, which is beneficial to increasing the rigidity of the connection part of the upper part and the pile sleeve.

In addition, in this embodiment, the pile sleeve may also be made as a flared sleeve, as shown in fig. 4.

The invention also discloses a construction method of the jacket with the construction suction tube, which comprises the following steps:

s1, processing and manufacturing the truss conduit frame body 8, the construction suction barrel, the horseshoe yoke plate, the pile sleeve and the shear plate 4 in a factory, and assembling and connecting all the components to form the integral conduit frame on land;

s2, carrying out integral jacket hoisting and positioning construction in the engineering area by using a crane ship or a construction platform, and placing on the seabed;

s3, vacuumizing the upright post of the truss jacket 8 to enable the integral jacket to sink, and enabling the construction suction cylinder to enter a seabed soil layer to reach the design and elevation requirements and perpendicularity preliminarily;

s4, finely leveling the whole jacket to the verticality and elevation required by the design;

s5, driving the pile foundation 7 into the seabed soil layer through the pile sleeve, and meeting the design requirements;

s6, pouring underwater self-protecting concrete 6 between the pile sleeve at the lower part of the lower shoe-shaped yoke plate 2-2 and the pile foundation 7 for bottom sealing;

s7, connecting the pile foundation 7 and the pile sleeve through annular grouting 5;

and S8, finishing construction.

During subsequent construction, the next operation can be carried out on the basis of the jacket.

In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other similar ways than those described herein, and therefore, should not be construed as limiting the scope of the invention.