CN215715257U - Novel plate-barrel gravity anchor - Google Patents

Abstract

The utility model discloses a novel plate-barrel gravity anchor, which comprises a core barrel and a concrete plate arranged on the core barrel, wherein the central axis of the core barrel is collinear with the central axis of the concrete plate; the outer side of the top of the core barrel is uniformly provided with a barrel plate connecting outer support along the circumferential direction, and the corresponding position of the inner side of the top of the core barrel is provided with a barrel plate connecting inner support; the core barrel comprises a barrel top plate and a barrel side wall; vertical stiffening ribs are uniformly arranged on the inner side of the barrel side wall along the vertical direction, and annular stiffening ribs are arranged along the annular direction; the concrete slab is internally provided with circumferential reinforcing steel bars along the circumferential direction, and longitudinal reinforcing steel bars are arranged along the longitudinal direction; the center of the concrete plate is provided with a drain hole which penetrates through the core barrel. The utility model greatly improves the horizontal bearing capacity and the anti-overturning bearing capacity of the anchoring foundation by combining the bucket penetrating into the soil and the plate on the mud surface and by virtue of the coupling effect; the device only needs to be hoisted and installed in engineering without additional equipment, and installation cost is greatly reduced.

Description

Novel plate-barrel gravity anchor

Technical Field

The utility model relates to a gravity type foundation, in particular to a novel plate-barrel gravity anchor.

Background

The development of offshore wind energy has been rapid for nearly 20 years. Generally, the farther off the shore, the stronger the wind, and the more stable the wind. Therefore, the floating wind turbine is a necessary choice for the development of the offshore wind turbine towards the deep water direction in the future. At present, floating wind turbines are mostly installed in shallow water areas of 50-100m, so catenary mooring is the main positioning method. In this case, the mooring lines are a large part of the sea floor, resulting in horizontal loads acting on the anchoring base.

At present, when the water depth exceeds 50 meters, the anchor pile is difficult to install by a pile driving mode, and no related equipment is used for completing the installation of the anchor pile. At present, the suction anchor is widely applied in a deep water environment, but because the suction anchor needs to provide additional suction equipment, and a special stratum (such as a calcareous sand stratum) is encountered in engineering, the suction anchor cannot be sunk in place. While for drag anchors and torpedo anchors it is difficult to achieve a given penetration depth in sandy soil.

In the current engineering practice, the concrete gravity anchor is widely applied to shallow water mooring due to the advantages of high installation efficiency, reliable bearing capacity and the like. The gravity anchor is directly hung on the seabed by an installation ship, and the installation is convenient and rapid. The horizontal bearing capacity of the gravity anchor is derived from the interfacial resistance of the sand and the structure interface, the grab-weight ratio of the gravity anchor is basically equal to the interfacial friction coefficient, and the value of the grab-weight ratio is between 0.48 and 0.58. Due to its low load bearing efficiency, the gravity anchor can be made very large, thereby incurring additional costs for transportation and installation.

Based on the engineering problem, the utility model provides a novel plate-barrel gravity anchor, which only needs to be hoisted in the installation process without additional engineering equipment.

SUMMERY OF THE UTILITY MODEL

Aiming at the anchoring problem of shallow water mooring of a floating fan, the utility model provides a novel plate-bucket gravity anchor. The device greatly improves the horizontal bearing capacity and the anti-overturning bearing capacity of the anchoring foundation by combining the bucket penetrating into the soil and the plate at the mud surface and by virtue of the coupling effect; the novel plate-barrel gravity anchor only needs to be hoisted and installed in engineering without additional equipment, and the installation cost is greatly reduced.

The utility model adopts the following technical scheme:

a novel plate-barrel gravity anchor comprises a core barrel and a concrete plate arranged on the core barrel, wherein the central axis of the core barrel is collinear with the central axis of the concrete plate;

the outer side of the top of the core barrel is uniformly provided with a barrel plate connecting outer support along the circumferential direction, and the corresponding position of the inner side of the top of the core barrel is provided with a barrel plate connecting inner support; the lower end of the core barrel is provided with an opening and comprises a barrel top plate and a barrel side wall; the top plate of the barrel is embedded into the concrete plate within a certain depth range; the barrel side wall is inboard evenly to be provided with vertical stiffening rib along vertical direction, has arranged the hoop stiffening rib along the hoop, and vertical stiffening rib and hoop stiffening rib are used for strengthening the resistance to deformation ability of core bucket.

The concrete slab is internally provided with circumferential reinforcing steel bars along the circumferential direction, and longitudinal reinforcing steel bars are arranged along the longitudinal direction; lifting lugs are uniformly arranged on the upper side of the concrete slab, and an anchor eye point is arranged at the bottom of one side of the concrete slab and used for connecting a mooring chain; the center of the concrete slab is provided with a drainage hole penetrating through the core barrel for draining internal water during foundation installation.

In the technical scheme, a bucket bottom edge angle is arranged at the bottom of the side wall of the bucket so as to facilitate the core bucket to penetrate into the soil body.

Furthermore, the barrel plate connecting outer support and the barrel plate connecting inner support are triangular steel plates.

The installation method of the novel plate-barrel gravity anchor comprises the following steps:

the plate-barrel gravity anchor is directly hoisted to the seabed, the core barrel is gradually penetrated into the soil body under the action of gravity, the internal water is discharged along with the soil body, and finally the installation is finished.

The utility model has the following advantages:

1. the utility model integrates the bearing advantages of the core barrel and the traditional gravity anchor, and the core barrel can be installed in place through the gravity of the gravity anchor by combining the core barrel and the traditional gravity anchor, and the gravity anchor can strengthen the stress state of the soil body near the core barrel, thereby greatly improving the bearing capacity of the novel plate-barrel gravity anchor.

2. The foundation does not need additional installation equipment, and only needs a traditional hoisting installation mode, so that the installation method is simplified.

Drawings

Fig. 1 is a front view of the novel plate-bucket gravity anchor of the present invention;

fig. 2 is a top view of the novel plate-bucket gravity anchor of the present invention;

fig. 3 is a front cross-sectional view of the novel plate-bucket gravity anchor of the present invention;

FIG. 4 is a top cross-sectional view of the cartridge of the present invention;

fig. 5 is a top rebar placement view of a concrete slab of the present invention;

the structure comprises a core barrel 1, a concrete slab 2, an anchor eye point 3, a lifting lug 4, a barrel slab connection outer support 5, a barrel slab connection inner support 6, a vertical stiffening rib 7, an annular stiffening rib 8, a barrel bottom edge angle 9, a drainage hole 10, a concrete annular reinforcing steel bar 11, a concrete longitudinal reinforcing steel bar 12, a barrel top plate 13 and a barrel side wall 14.

Detailed Description

Fig. 1 shows a novel plate-bucket gravity anchor of the present invention, which comprises a core bucket 1 and a concrete plate 2 disposed on the core bucket 1, wherein the central axis of the core bucket 1 is collinear with the central axis of the concrete plate 13;

the outer side of the top of the core barrel 1 is uniformly provided with a barrel plate connecting outer support 5 along the circumferential direction, and the corresponding position of the inner side of the top of the core barrel 1 is provided with a barrel plate connecting inner support 6; the lower end of the core barrel 1 is opened and comprises a barrel top plate 13 and a barrel side wall 14; the barrel top plate 13 is embedded in the concrete plate 2; vertical stiffening ribs 7 are uniformly arranged on the inner side of the barrel side wall 14 along the vertical direction, and annular stiffening ribs 8 are arranged along the annular direction;

the concrete slab 2 is internally provided with circumferential steel bars 11 along the circumferential direction and longitudinal steel bars 12 along the longitudinal direction; lifting lugs 4 are uniformly arranged on the upper side of the concrete slab 2, and an anchor eye point 3 is arranged at the bottom of one side of the concrete slab 2 and used for connecting a mooring chain; a water drainage hole 10 penetrating through the core barrel is arranged at the center of the concrete plate 2 and is used for draining internal water when the foundation is installed.

The bottom of the barrel side wall 14 is provided with a barrel bottom edge angle 9. The outer support 5 is connected to the stave and the inner support 6 is connected to the stave is the steel sheet of triangle-shaped.

The installation method of the novel plate-barrel gravity anchor comprises the following steps:

the novel plate-barrel gravity anchor is hoisted to the seabed through the lifting lugs 4, the core barrel of the plate-barrel gravity anchor gradually penetrates into the soil body under the action of gravity, the internal water is discharged along with the soil body, and finally the installation is completed.

Claims (3)

1. A novel plate-barrel gravity anchor is characterized by comprising a core barrel and a concrete plate arranged on the core barrel, wherein the central axis of the core barrel is collinear with the central axis of the concrete plate; the outer side of the top of the core barrel is uniformly provided with a barrel plate connecting outer support along the circumferential direction, and the corresponding position of the inner side of the top of the core barrel is provided with a barrel plate connecting inner support; the lower end of the core barrel is provided with an opening and comprises a barrel top plate and a barrel side wall; the top plate of the barrel is embedded into a concrete plate; vertical stiffening ribs are uniformly arranged on the inner side of the barrel side wall along the vertical direction, and annular stiffening ribs are arranged along the annular direction;

the concrete slab is internally provided with circumferential reinforcing steel bars along the circumferential direction, and longitudinal reinforcing steel bars are arranged along the longitudinal direction; lifting lugs are uniformly arranged on the upper side of the concrete slab, and an anchor eye point is arranged at the bottom of one side of the concrete slab and used for connecting a mooring chain; the center of the concrete slab is provided with a drainage hole penetrating through the core barrel for draining internal water during foundation installation.

2. The new plate-bucket gravity anchor of claim 1 wherein the bottom of the bucket sidewall is provided with a bucket bottom corner.

3. The new plate-bucket gravity anchor of claim 1 wherein the bucket plate connecting outer brace and the bucket plate connecting inner brace are triangular steel plates.

Images