CN113338285B

CN113338285B - Pre-embedding dismantling method for supporting piles of offshore deep foundation pit

Info

Publication number: CN113338285B
Application number: CN202110515566.8A
Authority: CN
Inventors: 陈波; 杨戊照; 郑睿卿; 罗秀海; 张洪亮
Original assignee: CRCC Harbour and Channel Engineering Bureau Group Co Ltd
Current assignee: CRCC Harbour and Channel Engineering Bureau Group Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2023-04-14
Anticipated expiration: 2041-05-12
Also published as: CN113338285A

Abstract

The invention discloses a pre-buried dismantling method of a support pile of a deep foundation pit near the sea, which comprises the following steps: step a, pre-burying at least one rope penetrating pipe, wherein the rope penetrating pipe is pre-buried at the outer side of a supporting pile reinforcement cage, and a position mark corresponding to the rope penetrating pipe is arranged on a supporting pile; b, finding out the position of the rope threading pipe according to the position mark, and chiseling the rope threading pipe at the position to enable the diamond cutting rope to penetrate through the rope threading pipe; and c, cutting off the supporting pile to be dismantled by using the diamond cutting rope, so that the supporting pile is cut off from the guardrail, and integrally hoisting the cut supporting pile by using hoisting equipment. The invention can pre-embed the cutting foundation at a reasonable position according to the requirement and cut at the reasonable position, has low construction cost, does not need to independently make slurry and remove, and is green and environment-friendly.

Description

Pre-embedding dismantling method for supporting piles of offshore deep foundation pit

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a pre-buried dismantling method for a support pile of a deep foundation pit near the sea.

Background

When a bottom building is built under complex coastal geological conditions, more and more piles, supports and bottom falling type waterproof curtains are adopted for deep foundation pit support, and during construction, guard rails need to be penetrated, so that the support piles are required to be dismantled.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pre-buried demolition method of the marine deep foundation pit support pile, which has the advantages of quick demolition effect, low construction cost and neatness in cutting and forming.

According to the embodiment of the first aspect of the invention, the method for pre-burying and dismantling the support piles of the deep foundation pit near the sea comprises the following steps: step a, pre-burying a rope penetrating pipe, wherein at least one rope penetrating pipe is arranged, the rope penetrating pipe is pre-buried at the outer side of a supporting pile steel reinforcement cage, a position mark corresponding to the rope penetrating pipe is arranged on a supporting pile, a guide ring is also buried on the supporting pile, the guide ring is arranged at a position close to the rope penetrating pipe, the diameter of the guide ring is 25cm, and the distance between the guide ring and the rope penetrating pipe is 20cm; b, finding out the position of the rope penetrating pipe according to the position mark, chiseling the rope penetrating pipe at the position, enabling a diamond cutting rope to penetrate through the rope penetrating pipe, transversely cutting a supporting pile through the diamond cutting rope, segmenting the supporting pile, longitudinally cutting the position between two transversely adjacent supporting piles, and segmenting the supporting pile from the guardrail; and c, cutting off the supporting pile to be dismantled by the diamond cutting rope, so that the supporting pile is cut off from the guardrail, and integrally hoisting the cut supporting pile by adopting hoisting equipment.

The method for pre-burying and dismantling the support piles of the deep foundation pit near the sea, provided by the embodiment of the invention, at least has the following beneficial effects: the method has the advantages that an effective dismantling method is provided for the supporting pile, the supporting pile needing to be dismantled can be dismantled quickly according to construction requirements to adapt to construction processes, dismantling efficiency is high, cutting places are provided for the diamond cutting ropes by means of the pre-buried rope penetrating pipes, cutting bases are provided, the supporting pile is cut through the diamond cutting ropes, the supporting pile is cut from the guardrail, cutting forming and trimming are carried out, cutting can be carried out at reasonable positions according to requirements, construction cost is low, independent slurry making and dismantling are not needed, and the method is green and environment-friendly.

According to some embodiments of the invention, the rope penetrating pipes are provided in a plurality, and the rope penetrating pipes are uniformly arranged along the vertical direction of the support piles.

According to some embodiments of the invention, in step a, the position mark is a bump provided on an outer side of the support pile.

According to some embodiments of the invention, in the step b, the stringing tube is chiseled out by using an electric pick, and the stringing tube is cut to expose the inner channel of the stringing tube.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a structural distribution diagram of the support piles, the rope penetrating pipes, the guide rings and the support pile cages.

The attached drawings are marked as follows:

support piles 100, rope penetrating pipes 200, diamond cutting ropes 300, position markers 400, guide rings 500, support pile cages 600 and surrounding guardrails 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

"picket 100", "guard rail 700", etc. represent the same or similar functional elements, and are an explanation of the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

With reference to fig. 1 and fig. 2, a method for pre-burying and dismantling a support pile of a deep foundation pit near the sea according to an embodiment of the present invention is described below.

A pre-burying dismantling method for a support pile of a sea-facing deep foundation pit comprises the following steps:

step a, pre-burying a rope penetrating pipe 200, when a supporting pile 100 is poured, after the supporting pile 100 is poured to a certain height position, placing the rope penetrating pipe 200 at the height position, wherein a position mark 400 corresponding to the rope penetrating pipe 200 is arranged on the supporting pile 100, the rope penetrating pipe 200 is arranged on the outer side of a supporting pile reinforcement cage 600, and the rope penetrating pipe 200 provides a cutting foundation for the subsequent supporting pile 100 dismantling process;

b, finding out the position of the rope penetrating pipe 200 according to the position mark 400, chiseling the rope penetrating pipe 200 at the position, exposing the rope penetrating pipe 200 on the outer surface of the support pile 100, cutting the rope penetrating pipe 200, exposing a channel in the rope penetrating pipe 200, enabling the diamond cutting rope 300 to penetrate through the rope penetrating pipe 200, and enabling the diamond cutting rope 300 to surround the periphery of the support pile 100 along the rope penetrating pipe 200;

and c, the diamond cutting rope 300 rapidly moves under the action of a driving mechanism of the diamond wire cutting machine, the supporting pile 100 is cut out of the guardrail 700 at the position of the rope penetrating pipe 200, and the hoisting equipment hoists and removes the cut supporting pile 100 integrally to finish the rapid dismantling process of the supporting pile 100. The hoisting equipment is commonly provided with a crane, a portal frame and the like.

The diamond cutting rope 300 and the cut object piece form relative grinding motion in a one-way circulating or reciprocating circulating motion mode, the diamond cutting rope 300 is strong in cutting capacity, high in efficiency and low in energy consumption, and a method of breaking by using a percussion drill is replaced. The rope threading pipe 200 is used as a pre-buried cutting foundation, and the cutting mode of the diamond cutting rope 300 is adopted, so that the dismantling work efficiency is high, the construction cost is low, the cutting forming is integrated, the separate slurry making is not needed, and the environment is protected.

The rope penetrating pipe 200 before the port is not cut is an annular closed pipe or a pipe fitting for port sealing treatment, the rope penetrating pipe 200 is transversely arranged at the set height of the support pile 100, the rope penetrating pipe 200 is wound around the circumference of the support pile 100, the annular closed pipe is adopted, concrete can be prevented from entering the rope penetrating pipe 200 when the support pile 100 is poured, the diamond cutting rope 300 penetrates into an inner pipeline of the rope penetrating pipe 200, and the diamond cutting rope 300 surrounds the support pile 100. The threading tube 200 may be a plastic tube with a hollow interior or other type of closed threading tube that can be cut, which can achieve the technical effects of the present invention and belong to the protection purpose of the present invention.

When the supporting pile 100 is too long, the supporting pile 100 needs to be dismantled in sections according to the actual hoisting capacity of the field equipment, and when the supporting pile 100 is longer, the supporting pile 100 is dismantled under the condition of 1-2 supports or after the supports are replaced. The rope threading pipes 200 are uniformly arranged in the vertical direction of the support pile 100, cutting positions are set by the rope threading pipes 200, and the rapid cutting and dismantling process is realized according to engineering construction schemes and construction steps.

In some embodiments of the invention, the position markers 400 may be bumps or ribs provided on the outside of the support piles 100, or other markers embedded in the support piles 100 that can be chiseled or cut away, for determining the position of the reeving pipe 200.

Still bury in the fender pile 100 and have a guide ring 500, guide ring 500 sets up in the position that is close to rope-penetrating pipe 200, and guide ring 500 is used for guaranteeing that the rope-penetrating pipe 200 that buries underground in the fender pile 100 transfers smoothly, transfers the guide ring 500 back smoothly, and accessible frame strip etc. installation rope-penetrating pipe 200 makes rope-penetrating pipe 200 accurately set up on fender pile 100. In step c, the guide ring 500 also functions as a hanging ring, the guide ring 500 is chiseled while the rope penetrating pipe 200 is chiseled, after the cutting is finished, the guide ring 500 provides a hooking position for hanging the support pile 100, and the hoisting equipment integrally hoists the dismantled support pile 100 by hooking the guide ring 500.

In some embodiments of the present invention, the diameter of the guiding ring 500 is 25cm, and the distance between the guiding ring 500 and the rope threading pipe 200 is 20cm, which can be reasonably designed according to actual construction conditions.

In some embodiments of the present invention, in the step b, the stringing tube 200 is stripped by using the electric pick, and the stringing tube 200 is cut, wherein the cutting can be performed by using a handheld cutter or other cutting tools, so that the stringing tube 200 exposes two ports, the diamond cutting rope 300 can penetrate into the stringing tube 200, and the diamond cutting rope 300 penetrating into the stringing tube 200 can surround the support pile 100. In the process of cutting the supporting piles 100 by the diamond cutting ropes 300, the supporting piles 100 are firstly cut transversely, the supporting piles 100 are cut into a plurality of sections, then, longitudinal cutting is carried out at the position between two supporting piles 100 which are adjacent transversely, the supporting piles 100 are cut out of the guardrail 700, and the rapid cutting process is realized. In addition, reasonable cutting can be carried out through other cutting modes, and the supporting piles 100 can be quickly cut off from the guardrail 700.

It should be noted that the guardrail 700 refers to the guardrail 700 formed by the row piles, the inner supports and the bottom-falling waterproof curtain.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A pre-buried demolition method of a support pile of a deep foundation pit near the sea is characterized by comprising the following steps:

step a, rope penetrating pipes (200) are embedded, at least one rope penetrating pipe (200) is arranged, the rope penetrating pipes (200) are embedded outside a supporting pile reinforcement cage (600), position marks (400) corresponding to the rope penetrating pipes (200) are arranged on supporting piles (100), guide rings (500) are further embedded on the supporting piles (100), the guide rings (500) are arranged at positions close to the rope penetrating pipes (200), the diameter of each guide ring (500) is 25cm, and the distance between each guide ring (500) and each rope penetrating pipe (200) is 20cm;

b, finding out the position of the rope penetrating pipe (200) according to the position mark (400), chiseling the rope penetrating pipe (200) at the position, enabling a diamond cutting rope (300) to penetrate through the rope penetrating pipe (200), enabling the diamond cutting rope (300) to transversely cut the support piles (100), segmenting the support piles (100), longitudinally cutting the position between two transversely adjacent support piles (100), and segmenting the support piles (100) from the guardrail (700);

c, cutting off the supporting pile (100) to be dismantled by the diamond cutting rope (300), so that the supporting pile (100) is separated from the guardrail (700), and integrally hoisting the cut supporting pile (100) by adopting hoisting equipment;

the rope penetrating pipes (200) are arranged in number, and the rope penetrating pipes (200) are uniformly arranged along the vertical direction of the support piles (100); the rope penetrating pipe (200) before the port is not cut is a circular closed pipe or a pipe fitting for the port closing treatment, and when the support pile (100) is poured to a certain height position, the rope penetrating pipe (200) is placed on the height position.

2. The method for pre-burying and dismantling the support piles in the deep foundation pit near the sea according to the claim 1, wherein in the step a, the position markers (400) are bumps arranged on the outer side of the support piles (100).

3. The method for pre-burying and dismantling the supporting piles in the deep foundation pit near the sea according to claim 1, wherein in the step b, an electric pick is used for chiseling out the rope penetrating pipe (200), the rope penetrating pipe (200) is cut, and an inner channel of the rope penetrating pipe (200) is exposed.