CN110510067B - Double-anchor-plate suction penetration type normal bearing anchor and installation method thereof - Google Patents

Abstract

The invention discloses a double-anchor plate suction penetration type normal bearing anchor and an installation method thereof, wherein the double-anchor plate suction penetration type normal bearing anchor comprises the following steps: the anchor body comprises a connecting plate and two symmetrical anchor plates, wherein the two symmetrical anchor plates are symmetrically arranged on the left side and the right side of the connecting plate, the connecting plate and the symmetrical anchor plates are rotationally connected through a connecting buckle, each symmetrical anchor plate can independently rotate around the connecting plate, and a plurality of anchor shank connecting holes are formed in the corners of the periphery of each symmetrical anchor plate; the two-plate anchor shank comprises a plurality of double-plate anchor chains, one ends of the double-plate anchor chains are connected with the second angle regulator, and the other ends of the double-plate anchor chains are respectively connected with the outer anchor shank connecting holes of the two symmetrical anchor plates; wherein, be connected with second mounting line and anchor line on the second angle regulator. The invention has the advantages of simple structure, large bearing area, definite installation depth, easy production and installation, better economy and reliability, and the like.

Description

Double anchor plate suction penetration type normal bearing anchor and installation method thereof

Technical Field

The invention relates to the technical field of marine engineering anchoring foundations, and in particular to a double-anchor plate suction penetration type normal bearing anchor and an installation method thereof.

Background technique

With the gradual increase in deep-water operations such as deep-sea oil and gas development and offshore wind power, the demand for floating structures using various mooring systems has increased accordingly. Various marine anchor foundations are an important part of the deep-water anchoring system. They provide sufficient bearing capacity through the interaction between the seabed and the marine soil, and then achieve the mooring of the floating structure through the anchoring system to ensure the stability of the floating structure. Various types of marine foundations mainly include towing anchors, normal bearing anchors, suction anchors, suction penetration plate anchors, and dynamic penetration anchors. These anchor foundations have different bearing capacities and installation methods. Towing anchors and normal bearing anchors have good bearing capacity, and are widely used in marine engineering due to the economy of towing penetration installation. Suction anchors and suction penetration anchors are also gradually being used in marine engineering due to their economical and convenient suction penetration installation methods.

Although deepwater floating structures and their mooring systems are already widely used, the relevant research is still insufficient to meet the future development technology needs under extreme wind and wave loads in deepwater and ultra-deepwater. In particular, in the relevant research on the anchoring foundation of offshore floating wind turbines, there is still a lack of research on reliable high-load anchoring foundations. And with the research on floating wind turbine technology, the demand for high-load, high-reliability, and low-cost anchoring foundations is gradually increasing. The traditional normal load-bearing anchor has a simple structure, but it is installed by dragging, and its installation trajectory is difficult to predict and determine, resulting in unreliability in its load estimation and on-site installation; the suction penetration plate anchor has a reliable installation depth, but its installation method limits the load of its structure.

Summary of the invention

The present invention mainly solves the technical problems existing in the prior art, thereby providing a double anchor plate suction penetration normal bearing anchor and its installation method which has a simple structure, a large bearing area, a clear installation depth, is easy to produce and install, and has good economy and reliability.

The above technical problems of the present invention are mainly solved by the following technical solutions:

The double anchor plate suction penetration type normal bearing anchor provided by the present invention comprises:

An anchor body, comprising a connecting plate and two symmetrical anchor plates, the two symmetrical anchor plates are symmetrically arranged on the left and right sides of the connecting plate, the connecting plate and the symmetrical anchor plates are rotatably connected by connecting buckles, each of the symmetrical anchor plates can rotate around the connecting plate independently, and a plurality of anchor shank connection holes are arranged at the four corners of each symmetrical anchor plate;

Two single plate anchor shanks are connected to two symmetrical anchor plates one by one, wherein each single plate anchor shank is composed of a plurality of single plate anchor chains, one end of each of the single plate anchor chains is connected to a first angle adjuster, and the other end of each of the single plate anchor chains is connected to an anchor shank connection hole of one of the symmetrical anchor plates; a first installation line is connected to the first angle adjuster;

A double-plate anchor shank, composed of a plurality of double-plate anchor chains, one end of each of which is connected to a second angle adjuster, and the other end of each of which is respectively connected to the outer anchor shank connection holes of the two symmetrical anchor plates; wherein the second angle adjuster is connected to a second installation line and an anchor line;

When in the installation mode, the anchor body is in a combined state and is stuck in the bottom groove of the suction caisson, and the first installation line, the second installation line and the anchor line are located in the suction caisson; when in the working mode, the two symmetrical anchor plates are rotated to be in the same plane as the connecting plate, and the connecting buckle is locked.

Furthermore, each of the symmetrical anchor plates can independently rotate around the connecting plate at an angle of 0°-90°.

Furthermore, a fixing hole is provided on the top of the suction caisson, and when in the installation mode, the first installation line, the second installation line and the anchor line are fixed in the suction caisson through the fixing hole.

Furthermore, the shape of the symmetrical anchor plate is a flat plate, and the number of anchor shank connection holes at the four corners of the symmetrical anchor plate is four.

The installation method of the double anchor plate suction penetration type normal bearing anchor of the present invention comprises the following steps:

S1. The anchor body is flipped over and combined and then clamped in the bottom groove of the suction caisson, and the first installation line, the second installation line and the anchor line are fixed in the suction caisson;

S2, arrive at the designed installation position, and the suction caisson is retracted;

S3, pulling the first installation line to adjust the first angle adjuster, so that the two symmetrical anchor plates rotate to be in the same plane as the connecting plate, and the connecting buckle is locked;

S4. Pull the second installation line to adjust the second angle adjuster so that the plane of the anchor body is perpendicular to the anchor line, and the anchor body enters the working state.

Furthermore, the method further comprises the step: S5, connecting the first installation line and the second installation line to a water surface buoy.

The beneficial effects of the present invention are as follows: by adopting a combination of two symmetrical anchor plates and a single-plate anchor shank and a double-plate anchor shank, the advantages of suction installation are combined on the basis of a high-load normal load-bearing anchor, thereby solving the problem that the final position of the anchor plate is difficult to determine during the dragging and penetration process of the existing normal load-bearing anchor due to the invisible and difficult to predict trajectory of the anchor plate. At the same time, the present invention has the advantages of simple structure, large load-bearing area, clear installation depth, easy production and installation, good economy and reliability, etc.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the working mode of the double anchor plate suction penetration type normal bearing anchor of the present invention;

FIG. 2 is a schematic diagram of the installation mode of the double anchor plate suction penetration type normal bearing anchor of the present invention.

Detailed ways

The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

Referring to FIGS. 1-2 , the double anchor plate suction penetration normal bearing anchor of the present invention comprises:

The anchor body comprises a connecting plate 3 and two symmetrical anchor plates 4, wherein the two symmetrical anchor plates 4 are symmetrically arranged on the left and right sides of the connecting plate 3, and the connecting plate 3 and the symmetrical anchor plates 4 are rotatably connected via a connecting buckle 14, and each of the symmetrical anchor plates 4 can rotate around the connecting plate 3 independently, and each of the symmetrical anchor plates 4 is provided with a plurality of anchor shank connection holes 5 at the four corners of the periphery;

Two single plate anchor shanks 6 are connected to two symmetrical anchor plates 4 in one-to-one correspondence, wherein each single plate anchor shank is composed of a plurality of single plate anchor chains, one end of the plurality of single plate anchor chains is connected to a first angle adjuster 7, and the other end of the plurality of single plate anchor chains is connected to an anchor shank connection hole 5 of one of the symmetrical anchor plates 4; a first installation line 8 is connected to the first angle adjuster 7;

The double-plate anchor shank 9 is composed of a plurality of double-plate anchor chains, one end of each of which is connected to a second angle adjuster 10, and the other end of each of which is connected to the outer anchor shank connection holes 5 of the two symmetrical anchor plates 4, respectively; wherein the second angle adjuster 10 is connected to a second installation line 11 and an anchor line 12;

When in the installation mode, the anchor body is in a combined state and is stuck in the bottom groove 2 of the suction caisson 1, and the first installation line 8, the second installation line 11 and the anchor line 12 are located in the suction caisson 1; when in the working mode, the two symmetrical anchor plates 4 are rotated to be in the same plane as the connecting plate 3, and the connecting buckle 14 is locked.

Specifically, in order to adjust the rotation angle of each symmetrical anchor plate 4 so that it can be switched between the installation mode and the working mode, each of the symmetrical anchor plates 4 can independently rotate around the connecting plate at an angle of 0°-90°.

Preferably, a fixing hole 13 is provided on the top of the suction caisson 1 , and when in the installation mode, the first installation line 8 , the second installation line 11 and the anchor line 12 are fixed in the suction caisson 1 through the fixing hole 13 .

Preferably, the shape of the symmetrical anchor plate 4 is a flat plate, that is, existing plate anchor structures such as normal load-bearing anchor plates and suction penetration plate anchors and similar designs can be adopted; and the number of anchor shank connection holes 5 at the four corners of the symmetrical anchor plate 4 is four, which is convenient for adjusting the rotation angle of the symmetrical anchor plate 4.

The present invention provides a method for installing the above-mentioned double anchor plate suction penetration type normal bearing anchor, which comprises the following steps:

S1, flipping and merging the anchor body and clamping it in the bottom groove 2 of the suction caisson 1, and fixing the first installation line 8, the second installation line 11 and the anchor line 12 in the suction caisson 1;

S2, reaching the designed installation position, the suction caisson 1 is retracted;

S3, pull the first installation line 8 to adjust the first angle adjuster 7, so that the two symmetrical anchor plates 4 rotate to be in the same plane as the connecting plate 3, and lock the connecting buckle 14;

S4, pulling the second installation line 11 to adjust the second angle adjuster 10, so that the plane of the anchor body is perpendicular to the anchor line 12, and the anchor body enters the working state.

In the present invention, in order to facilitate observation and operation of the first installation line 8 and the second installation line 11, it also includes the step: S5, connecting the first installation line 8 and the second installation line 11 to the surface buoy.

In summary, the advantages of the present invention are:

By adopting a combination of two symmetrical anchor plates and single-plate anchor shanks and double-plate anchor shanks, the advantages of suction installation are combined on the basis of high-load normal bearing anchors, thereby solving the problem of difficulty in determining the final position of the anchor plates during the dragging and penetration process of existing normal bearing anchors due to the invisible and unpredictable anchor plate trajectory. At the same time, the present invention has the advantages of simple structure, large load-bearing area, clear installation depth, easy production and installation, good economy and reliability, etc.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims (1)

1. A double anchor plate suction penetration normal bearing anchor, characterized by comprising: An anchor body, comprising a connecting plate and two symmetrical anchor plates, the two symmetrical anchor plates are symmetrically arranged on the left and right sides of the connecting plate, the connecting plate and the symmetrical anchor plates are rotatably connected by connecting buckles, each of the symmetrical anchor plates can rotate around the connecting plate independently, and a plurality of anchor shank connection holes are arranged at the four corners of each symmetrical anchor plate; Two single plate anchor shanks are connected to two symmetrical anchor plates one by one, wherein each single plate anchor shank is composed of a plurality of single plate anchor chains, one end of each of the single plate anchor chains is connected to a first angle adjuster, and the other end of each of the single plate anchor chains is connected to an anchor shank connection hole of one of the symmetrical anchor plates; a first installation line is connected to the first angle adjuster; A double-plate anchor shank, composed of a plurality of double-plate anchor chains, one end of each of which is connected to a second angle adjuster, and the other end of each of which is respectively connected to the outer anchor shank connection holes of the two symmetrical anchor plates; wherein the second angle adjuster is connected to a second installation line and an anchor line; When in the installation mode, the anchor body is in a combined state and is clamped in the bottom groove of the suction caisson, and the first installation line, the second installation line and the anchor line are located in the suction caisson; when in the working mode, the two symmetrical anchor plates are rotated to be in the same plane as the connecting plate, and the connecting buckle is locked; Pull the first installation line to adjust the first angle adjuster, so that the two symmetrical anchor plates rotate to be in the same plane as the connecting plate, and the connecting buckle is locked; Pull the second installation line to adjust the second angle adjuster so that the plane of the anchor body is perpendicular to the anchor line, and the anchor body enters the working state; Each of the symmetrical anchor plates can independently rotate around the connecting plate at an angle of 0°-90°; A fixing hole is provided on the top of the suction caisson, and when in the installation mode, the first installation line, the second installation line and the anchor line are fixed in the suction caisson through the fixing hole; The shape of the symmetrical anchor plate is a flat plate, and the number of anchor shank connection holes at the four corners of the symmetrical anchor plate is four; The installation method of the double anchor plate suction penetration type normal bearing anchor includes the following steps: S1. The anchor body is flipped over and combined and then clamped in the bottom groove of the suction caisson, and the first installation line, the second installation line and the anchor line are fixed in the suction caisson; S2, arrive at the designed installation position, and the suction caisson is retracted; S3, pulling the first installation line to adjust the first angle adjuster, so that the two symmetrical anchor plates rotate to be in the same plane as the connecting plate, and the connecting buckle is locked; S4, pulling the second installation line to adjust the second angle adjuster, so that the plane of the anchor body is perpendicular to the anchor line, and the anchor body enters the working state; The step also includes: S5, connecting the first installation line and the second installation line to the surface buoy.