CN-117266135-B - Pile anchor and pile anchor construction method

CN117266135BCN 117266135 BCN117266135 BCN 117266135BCN-117266135-B

Abstract

The embodiment of the application discloses a pile anchor and a pile anchor construction method, wherein the pile anchor is of a split structure and comprises a pile body and a transition pile, the pile body is a part of the pile anchor which can be kept in a soil body, and the transition pile is a part which can be taken out from the soil body. The pile body and the transition pile are detachably connected through the connecting piece, so that the transition pile can be separated from the pile body after penetrating the pile body to a preset depth below the mud surface, namely, the separation of the pile body and the transition pile is realized by utilizing a mechanical structure, the installation cost of the pile anchor is reduced by replacing the mode that the pile body is cut off by an underwater robot or a diver in the prior art, meanwhile, the transition pile can be completely taken out, the pile body is only left below the mud surface, the taken out transition pile can be repeatedly utilized, the installation cost of the pile anchor is further reduced, in addition, the transition pile transmits the acting force of a pile hammer to the pile body, penetrates the pile body to the preset depth below the mud surface, and compared with the mode that the pile body is cut off and then is flush with the mud surface in the prior art, the influence of flushing on the pile anchor is reduced.

Inventors

LEI YU
FENG XUEJIAO
LI WEIDONG
LIU XIN
YAN SHU
CHEN JIANJUN
Zhou Dieming
LIU RUICHAO
GUO XIAOHUI
HU HEWEN

Assignees

中国华能集团清洁能源技术研究院有限公司
华能海上风电科学技术研究有限公司

Dates

Publication Date: 20260505
Application Date: 20231107

Claims (7)

1. A pile anchor, comprising: the pile comprises a pile body (1), wherein an anchor head (2) is arranged on the pile body (1), and the anchor head (2) is used for being connected with a mooring rope; The transition pile (3) is detachably connected with the pile body (1) through a connecting piece (4), so that the transition pile (3) can be separated from the pile body (1) after the pile body (1) penetrates a preset depth below a mud surface; The connector (4) comprises: At least three connecting plates (41) which are arranged in a radial manner, wherein the inner side edges of two adjacent connecting plates (41) are connected, the outer side edges of the connecting plates (41) are provided with connecting grooves (411), and the connecting plates (41) are connected with the pile body (1); The transition pile (3) is provided with a first cavity, the first cavity can be covered on a plurality of connecting plates (41), the circumference of the first cavity is provided with connecting strips (31), and the transition pile (3) is connected with the connecting plates (41) through connecting grooves (411) matched with the connecting strips (31); the length of the connecting strip (31) is greater than half the distance between two adjacent connecting slots (411) and less than the distance between two adjacent connecting slots (411).
2. Pile anchor according to claim 1, characterized in that the pile body (1) is provided with a second cavity, the inner wall of the second cavity is connected with the outer side edge of the connecting plate (41), and the connecting groove (411) of the connecting plate (41) is located outside the second cavity.
3. Pile anchor according to claim 2, characterized in that the inner diameter of the first cavity is equal to the inner diameter of the second cavity, so that the outer side of the web (41) is in abutment with the inner wall of the first cavity, and/or, The diameter of the pile body (1) is equal to the diameter of the transition pile (3).
4. Pile anchor according to claim 1, characterized in that the length of the pile body (1) is shorter than the length of the transition pile (3), the length of the connection plate (41) in the axial direction of the pile body (1) not exceeding the length of the pile body (1).
5. Pile anchor according to claim 1, characterized in that the anchor head (2) is a lifting lug.
6. A method of construction of a pile anchor as defined in any one of claims 1 to 5, comprising: s1, detachably connecting a pile body (1) and a transition pile (3) through a connecting piece (4) to obtain a pile anchor; s2, lifting the pile anchor to a target position, and penetrating a pile body (1) of the pile anchor to a preset depth below a mud surface; S3, separating the pile body (1) and the transition pile (3), and pulling out the transition pile (3).
7. A pile-anchor construction method according to claim 6, characterized in that the number of said connecting slots (411) is equal to the number of said connecting bars (31).

Description

Pile anchor and pile anchor construction method Technical Field The application relates to the technical field of ocean engineering, in particular to a pile anchor and a pile anchor construction method. Background The anchor foundation is engineering equipment for mooring the floating marine structure in the working sea. The anchoring foundation may be classified into a gravity anchor, a suction anchor, a towing anchor, a pile anchor, etc., wherein the pile anchor can bear a horizontal load and a vertical load at the same time, and is widely used in a permanent mooring system of an ocean engineering apparatus. However, the body of the pile anchor cannot be fully embedded into the seabed layer in the construction process, and in order to ensure the safety of the pile anchor and reduce the flushing depth of the pile anchor, an underwater robot or a diver is generally required to cut off the body above the mud surface, so that the installation cost of the pile anchor is increased, and even if the body of the pile anchor above the mud surface is cut off, the flushing problem of the pile anchor cannot be avoided, thereby reducing the bearing capacity of the pile anchor. Therefore, how to reduce the installation cost of the pile anchors and reduce the influence of the scouring of the pile anchors at the same time is a technical problem to be solved by the technicians in the field. Disclosure of Invention The application provides a pile anchor, which is used for reducing the installation cost of the pile anchor and reducing the influence of pile anchor scouring. The application also provides a pile anchor construction method. In order to achieve the above object, the present application provides a pile anchor comprising: the pile body is provided with an anchor head which is used for being connected with a mooring rope; The transition pile is detachably connected with the pile body through a connecting piece, so that the transition pile can be separated from the pile body after the pile body penetrates a preset depth below a mud surface. Preferably, in the above pile anchor, the connecting member comprises: At least three connecting plates which are arranged in a radial manner, wherein the inner side edges of two adjacent connecting plates are connected, the outer side edges of the connecting plates are provided with connecting grooves, and the connecting plates are connected with the pile body; The transition pile is characterized in that a first cavity is formed in the transition pile, the first cavity can be covered on the connecting plates, connecting strips are arranged in the circumference of the first cavity, and the transition pile is connected with the pile body through connecting grooves matched with the connecting strips. Preferably, in the pile anchor, a second cavity is formed in the pile body, an inner wall of the second cavity is connected with an outer side edge of the connecting plate, and a connecting groove of the connecting plate is located outside the second cavity. Preferably, in the above pile anchor, the inner diameter of the first cavity is equal to the inner diameter of the second cavity, so that the outer side edge of the connection plate is fitted with the inner wall of the first cavity, and/or, The diameter of the pile body is equal to that of the transition pile. Preferably, in the pile anchor, the length of the pile body is shorter than the length of the transition pile, and the length of the connecting plate along the axial direction of the pile body does not exceed the length of the pile body. Preferably, in the pile anchor, the length of the connecting strip is greater than half the distance between two adjacent connecting grooves and less than the distance between two adjacent connecting grooves. Preferably, in the pile anchor, the anchor head is a lifting lug. The pile anchor construction method is suitable for the pile anchor disclosed in any one of the schemes, and comprises the following steps: s1, detachably connecting a pile body and a transition pile through a connecting piece to obtain a pile anchor; S2, lifting the pile anchor to a target position, and penetrating the pile body of the pile anchor to a preset depth below the mud surface; S3, separating the pile body from the transition pile, and pulling out the transition pile. Preferably, in the above pile anchor construction method, the connecting member in S1 includes: At least three connecting plates which are arranged in a radial manner, wherein the inner side edges of two adjacent connecting plates are connected, the outer side edges of the connecting plates are provided with connecting grooves, and the connecting plates are connected with the pile body; The transition pile is characterized in that a first cavity is formed in the transition pile, the first cavity can be covered on the connecting plates, connecting strips are arranged in the circumference of the first cavity, and the transition pile is connected with