阅读说明：本技术 一种大尺寸浅基础防沉板倾斜吊装方法 (Inclined hoisting method for large-size shallow foundation anti-sinking plate ) 是由 孙雪梅 方伟 姜瑛 陈祥余 王长涛 梁辉 王凤云 李刚 张大为 邢广阔 钟朝廷 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种大尺寸浅基础防沉板倾斜吊装方法,在防沉板上设置起吊吊点、倾斜吊点、下放吊点、水平吊点,实现了防沉板从起吊、倾斜吊装、防沉板回正、水平吊装的全过程。在整个吊装过程中,八个吊点配合使用,实现了大尺寸防沉板从水平位置起吊、倾斜吊装通过飞溅区到最后水平吊装放置到海床上的全过程。整个吊装过程中,既能使大尺寸浅基础防沉板在过飞溅区过程中受波浪拍击面积小,从而保证了大尺寸浅基础防沉板在过飞溅区过程中的安全性,又能实现将防沉板呈水平状态平稳置于海床上。(The invention discloses an inclined hoisting method for a large-size shallow foundation anti-settling plate, which is characterized in that hoisting points, inclined hoisting points, lowering hoisting points and horizontal hoisting points are arranged on the anti-settling plate, so that the whole process of hoisting, inclined hoisting, aligning and horizontal hoisting of the anti-settling plate is realized. In the whole hoisting process, the eight hoisting points are matched for use, so that the whole process of hoisting the large-size anti-sinking plate from the horizontal position, obliquely hoisting the large-size anti-sinking plate through the splashing area and finally horizontally hoisting the large-size anti-sinking plate to the seabed is realized. In the whole hoisting process, the large-size shallow foundation anti-sinking plate is small in area beaten by waves in the process of passing through a splashing area, so that the safety of the large-size shallow foundation anti-sinking plate in the process of passing through the splashing area is ensured, and the anti-sinking plate can be stably placed on the seabed in a horizontal state.)

1. The method for obliquely hoisting the large-size shallow foundation anti-sinking plate is realized by the following steps and is characterized in that:

(1) prefabricating, namely, respectively pre-installing lifting points, inclined lifting points, lowering lifting points and horizontal lifting points on the anti-sinking plate, and respectively connecting lifting ropes to each lifting point;

(2) hoisting, wherein a first hoisting rope connected with a hoisting point is tightened, other hoisting ropes are in a loose state, the anti-sinking plate is hoisted, and the anti-sinking plate reaches a preset inclination angle;

(3) the method comprises the following steps of obliquely hoisting, wherein a first hoisting rope and a second hoisting rope connected with an oblique hoisting point are in a tensioning state, and hoisting the anti-sinking plate to pass through a splashing area;

(4) returning, tensioning a third lifting rope connected with the lowering lifting point, loosening the first lifting rope, and adjusting the anti-sinking plate to be in a horizontal state;

(5) and horizontally hoisting, namely tensioning the second hoisting rope and a fourth hoisting rope connected with the horizontal hoisting point, loosening other hoisting ropes, horizontally hoisting the anti-sinking plate to the seabed, and completing hoisting by the anti-sinking plate.

2. The inclined hoisting method of the large-size shallow foundation anti-sinking plate as claimed in claim 1, wherein: in the step (1), the lowering hoisting point is positioned on the side surface of the anti-sinking plate, and the hoisting point, the inclined hoisting point and the horizontal hoisting point are sequentially installed on the top surface of the anti-sinking plate from one side to the other side of the lowering hoisting point.

3. The inclined hoisting method of the large-size shallow foundation anti-sinking plate as claimed in claim 1, wherein: the inclined hoisting point and the downward hoisting point are hoisting points with the same specification.

4. The inclined hoisting method of the large-size shallow foundation anti-sinking plate as claimed in claim 1, wherein: the lifting point and the inclined lifting point are of an integrated structure.

5. The inclined hoisting method of the large-size shallow foundation anti-sinking plate as claimed in claim 2, wherein: in the step (1), two lifting points, two inclined lifting points, two lowered lifting points and two horizontal lifting points are arranged, and each lifting point is connected with a lifting rope.

Technical Field

The invention relates to an inclined hoisting method for a large-size shallow foundation anti-sinking plate.

Background

In the deep water ocean oil gas development, the shallow foundation anti-sinking plate is widely used as the foundation of underwater equipment due to the characteristics of time saving, labor saving, low cost and the like of manufacturing and installation. In the installation process of the large-size shallow foundation anti-sinking plate, the anti-sinking plate is greatly influenced by wave flow force when passing through a splashing area, and the installation of the weather window needs to be strictly controlled. For some sinking-proof plate bases with larger sizes and difficult installation requirements for controlling and installing climate windows, a suction pile base is usually used for replacing the sinking-proof plate bases. However, compared with the anti-sinking plate foundation, the suction pile needs special equipment and personnel for moving and restoring, and meanwhile, the workload of underwater construction is increased, and the construction period and the cost are high.

Disclosure of Invention

The invention provides a large-size shallow foundation anti-settling plate inclined hoisting method, which can realize the whole process of hoisting, inclined hoisting, aligning and horizontal hoisting of an anti-settling plate.

In order to solve the technical problems, the invention provides a large-size shallow foundation anti-settling plate inclined hoisting method, which is realized by the following steps:

(1) prefabricating, namely, respectively pre-installing lifting points, inclined lifting points, lowering lifting points and horizontal lifting points on the anti-sinking plate, and respectively connecting lifting ropes to each lifting point;

(2) hoisting, wherein a first hoisting rope connected with a hoisting point is tightened, other hoisting ropes are in a loose state, the anti-sinking plate is hoisted, and the anti-sinking plate reaches a preset inclination angle;

(3) the method comprises the following steps of obliquely hoisting, wherein a first hoisting rope and a second hoisting rope connected with an oblique hoisting point are in a tensioning state, and hoisting the anti-sinking plate to pass through a splashing area;

(4) returning, tensioning a third lifting rope connected with the lowering lifting point, loosening the first lifting rope, and adjusting the anti-sinking plate to be in a horizontal state;

(5) and horizontally hoisting, namely tensioning the second hoisting rope and a fourth hoisting rope connected with the horizontal hoisting point, loosening other hoisting ropes, horizontally hoisting the anti-sinking plate to the seabed, and completing hoisting by the anti-sinking plate.

Further, in the step (1), the lowering hoisting point is positioned on the side surface of the anti-sinking plate, and the hoisting point, the inclined hoisting point and the horizontal hoisting point are sequentially installed from one side to the other side of the lowering hoisting point on the top surface of the anti-sinking plate.

Furthermore, the inclined hoisting point and the downward hoisting point are hoisting points with the same specification.

Furthermore, the lifting point and the inclined lifting point are of an integrated structure.

Furthermore, in the step (1), two lifting points, two inclined lifting points, two lowering lifting points and two horizontal lifting points are arranged, and each lifting point is connected with one lifting rope.

The invention has the technical effects that: the invention discloses a large-size shallow foundation anti-settling plate inclined hoisting method, wherein 4 pairs of hoisting points, 8 pairs of hoisting points, inclined hoisting points, downward hoisting points and horizontal hoisting points are arranged on an anti-settling plate and are divided into hoisting points, inclined hoisting points, downward hoisting points and horizontal hoisting points according to functions, and different hoisting points are hoisted through external hoisting equipment and hoisting ropes, so that the whole process of hoisting, inclined hoisting, centering and horizontal hoisting of the anti-settling plate is realized.

The invention can conveniently realize the conversion of each hoisting state through the conversion of the hoisting points, does not need higher-level ship support, ensures the safety of the large-size shallow foundation anti-sinking plate in the process of passing a splash zone, is safe and reliable, reduces the construction difficulty and reduces the construction cost.

Drawings

FIG. 1 is a schematic diagram of the positions of the suspension points on the anti-settling plate according to the present invention;

FIG. 2 is a schematic view of the anti-sinking plate of the present invention in a lifted state;

FIG. 3 is a schematic view of the inclined hoisting state of the anti-sinking plate according to the present invention;

FIG. 4 is a schematic diagram (I) of the working condition of the process of placing the anti-sinking plate horizontally in the invention;

FIG. 5 is a schematic view (II) of the horizontal process of placing the anti-sinking plate in the invention

FIG. 6 is a schematic view of the anti-settling plate of the present invention in a return state;

fig. 7 is a schematic view of the horizontal hoisting state of the anti-sinking plate of the present invention.

Reference numerals: 1. an anti-sinking plate; 2. lifting a lifting point; 3. inclining the hoisting point; 4. lowering the hoisting point; 5. horizontal hoisting points; 6. a first lifting rope; 7. a second lifting rope; 8. a third lifting rope; 9. and a fourth lifting rope.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

The embodiment of the invention discloses a large-size shallow foundation anti-sinking plate inclined hoisting method as shown in figures 1 to 7, and the specific implementation of each step is as follows:

a large-size shallow foundation anti-sinking plate inclined hoisting method is realized through the following steps:

(1) prefabricating, namely respectively pre-installing a lifting point 2, an inclined lifting point 3, a lowering lifting point 4 and a horizontal lifting point 4 on the anti-sinking plate 1, and respectively connecting a lifting rope on each lifting point;

the lower lifting point 4 is positioned on the side surface of the anti-sinking plate 1, and the lifting point 2, the inclined lifting point 3 and the horizontal lifting point 4 are sequentially arranged from one side to the other side of the lower lifting point 4 on the top surface of the anti-sinking plate 1.

The lifting points 2, the inclined lifting points 3, the downward lifting points 4 and the horizontal lifting points 4 are respectively provided with two lifting ropes, and each lifting point is connected with one lifting rope.

The inclined hoisting point 3 and the downward hoisting point 4 are hoisting points with the same specification.

The lifting and hanging points 2 and the inclined lifting and hanging points 3 are of an integrated structure.

(2) Hoisting, wherein a first hoisting rope 6 connected with a hoisting point 2 is tightened, other hoisting ropes are in a loose state, the anti-sinking plate 1 is hoisted, and the anti-sinking plate reaches a preset inclination angle;

(3) obliquely hoisting, namely, a first hoisting rope 6 and a second hoisting rope 7 connected with the oblique hoisting point 3 are in a tensioning state, and hoisting the anti-sinking plate 1 to pass through a splashing area;

(4) returning to the right state, tensioning a third lifting rope 8 connected with the lowering lifting point 4, loosening the first lifting rope 6, and adjusting the anti-sinking plate 1 to be in a horizontal state;

(5) and horizontally hoisting, namely tensioning the second lifting rope 7 and a fourth lifting rope 9 connected with the horizontal hoisting point 4, loosening other lifting ropes, horizontally hoisting the anti-settling plate 1 to the seabed, and completing hoisting of the anti-settling plate 1.

The embodiment is implemented by the following steps: (1) prefabricating, namely installing two lifting points 2, two inclined lifting points 3, two lower lifting points 4 and two horizontal lifting points 4 on an anti-sinking plate 1, wherein the lower lifting points 4 are installed on the side surface of the anti-sinking plate 1, the lifting points 2, the inclined power-down points and the horizontal lifting points 4 are sequentially arranged on the top surface of the anti-sinking plate 1 from one side of the lower lifting points 4 to the other side of the anti-sinking plate 1, and a first lifting rope 6, a second lifting rope 7, a third lifting rope 8 and a fourth lifting rope 9 are respectively connected with the lifting points 2, the inclined lifting points, the lower lifting points 4 and the horizontal lifting points 4; (2) hoisting, wherein the first hoisting rope 6 is tightened by the hoisting device, other hoisting ropes are in a loose state, and the anti-sinking plate is hoisted to reach a preset inclination angle; (3) obliquely hoisting, tightening the second lifting rope 7 by the lifting device, and driving the anti-sinking plate 1 to pass through the splashing area; (4) returning, tightening the third lifting rope 8 by the lifting device, simultaneously enabling the first lifting rope 6 to be in a loose state, releasing the first lifting rope 6, and then lowering the third lifting rope 8 until the anti-sinking plate 1 is in a horizontal state; (4) and horizontally hoisting, wherein the second hoisting rope 7 and the fourth hoisting rope 9 are in a tensioning state by the hoisting device, the third hoisting rope 8 is released, the hoisting anti-settling plate 1 reaches the specified position of the seabed, and the hoisting of the anti-settling plate 1 is finished.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.