CN215367305U

CN215367305U - High pressure spouts combination pile foundation hole fender structure soon

Info

Publication number: CN215367305U
Application number: CN202121613834.1U
Authority: CN
Inventors: 干飞; 郑刚; 徐安忠; 李美霖; 赵孝雄; 周海祚; 刁钰; 毕靖; 王超林; 张毅; 曹腾; 常书铭; 杨军
Original assignee: Cccc Kunming Real Estate Co ltd; Tianjin University; Guizhou University
Current assignee: Cccc Kunming Real Estate Co ltd; Tianjin University; Guizhou University
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-31
Anticipated expiration: 2031-07-15

Abstract

The utility model relates to the technical field of side slope and landslide support, in particular to a high-pressure jet grouting combined pile foundation pit supporting and retaining structure which comprises a plurality of front piles and a plurality of rear piles, wherein the front piles and the rear piles are arranged in parallel, the front piles and the rear piles are staggered and arranged at intervals, the top ends of the front piles and the rear piles are fixedly connected through top beams, the front piles and the rear piles are both ribbed high-pressure jet grouting piles, the front piles and the rear piles are all obliquely arranged, the bottom ends of the front piles and the bottom ends of the rear piles are respectively located on two sides of the vertical projection of the top beams, and the lower parts of the front piles and the lower parts of the rear piles are all embedded into the ground. The utility model has the beneficial effects that: the pile body of the utility model improves the mechanical property of the retaining structure, reduces the requirements of the embedding conditions of the pile, improves the stability of the retaining structure, has convenient and quick construction, reduces the cost and the construction difficulty of foundation pit support, improves the reliability of a retaining structure system, and is convenient for popularization and application.

Description

High pressure spouts combination pile foundation hole fender structure soon

Technical Field

The utility model relates to the technical field of side slope and landslide support, in particular to a high-pressure jet grouting combined pile foundation pit retaining structure.

Background

In the process of mountain town construction, in order to reasonably utilize the site, mountains are often dug to fill gullies, so that a plurality of high slopes and deep foundation pits are formed. The supporting and retaining structure is a structure for preventing collapse or deformation instability of a rock body workshop.

There is a single pile retaining structure among the prior art, sets up a set of parallel arrangement's friction pile beside the side slope promptly, supports the border of side slope through this group's friction pile and stops, and this structure is a statically determinate structure, simple structure, construction convenience, but its stability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-pressure jet grouting combined pile foundation pit retaining structure which can improve the stability of a retaining structure and is convenient and quick to construct.

The technical scheme for solving the technical problems is as follows: the utility model provides a high pressure spouts combined pile foundation hole soon keeps off structure, includes a plurality of parallel arrangement's preceding campshed and a plurality of parallel arrangement's back campshed, preceding campshed with the crisscross interval setting of back campshed, preceding campshed with back campshed's top is through back timber fixed connection, preceding campshed with back campshed is the muscle high pressure spouts the stake soon, preceding campshed with back campshed all inclines to set up, just the bottom of preceding campshed and the bottom of back campshed is located respectively the vertical projected both sides of back timber, preceding campshed with the lower part of back campshed is in the equal pile embedding ground.

The utility model has the beneficial effects that: the pile body of the utility model improves the mechanical property of the retaining structure, reduces the requirements of the embedding conditions of the pile, improves the stability of the retaining structure, has convenient and quick construction, reduces the cost and the construction difficulty of foundation pit support, improves the reliability of a retaining structure system, and is convenient for popularization and application.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the diameter of the front row of piles and the diameter of the rear row of piles are 300-1000 mm.

The beneficial effect of adopting the further scheme is that: the diameters of the front row of piles and the rear row of piles are 300-1000 mm, so that on one hand, the strength of the whole pile body is ensured, and on the other hand, the diameters are not too large, and the construction is not influenced.

Furthermore, the number of the steel bars in the front row of piles and the rear row of piles is 1-3, and the diameter of the steel bars is larger than or equal to 25 mm.

The beneficial effect of adopting the further scheme is that: 1-3 reinforcing steel bars with the diameter more than or equal to 25mm are adopted in the front row of piles and the rear row of piles, so that the strength of the front row of piles and the rear row of piles is ensured, and the inconvenience of construction due to excessive internal reinforcing steel bars is avoided.

Further, the length of the front row of piles and the rear row of piles embedded into the ground is one third to one half of the overall length of the front row of piles and the rear row of piles.

The beneficial effect of adopting the further scheme is that: the length of the front row of piles and the rear row of piles embedded into the ground is one third to one half of the whole length of the front row of piles and the rear row of piles, and the stability of fixing the front row of piles and the rear row of piles is ensured.

Furthermore, the included angle between the front row of piles and the rear row of piles and the horizontal direction is 10-20 degrees.

The beneficial effect of adopting the further scheme is that: the included angle between the front row of piles and the horizontal direction between the rear row of piles and the horizontal direction is 10-20 degrees, so that the strength of a soil body between the front row of piles and the rear row of piles after construction is facilitated, and when the included angle is too large, the strength of the soil layer cannot be ensured, and the supporting and blocking effect is influenced.

Further, the top beam is of a reinforced concrete structure, and the top ends of the steel bars in the front row of piles and the rear row of piles are anchored in the top beam.

The beneficial effect of adopting the further scheme is that: the top ends of the steel bars in the front row of piles and the rear row of piles are anchored into the top beam, so that the stability of fixing the front row of piles and the rear row of piles with the top beam is ensured, and the strength of the whole supporting and blocking structure is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the present invention after installation;

in the drawings, the components represented by the respective reference numerals are listed below:

1. front row piles; 2. back row piles; 3. a top beam; 4. a side slope top line; 5. a bottom line of the side slope.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, an embodiment of the present invention includes a plurality of front piles 1 and a plurality of rear piles 2 arranged in parallel, the front piles 1 and the rear piles 2 are arranged in a staggered and spaced manner, the top ends of the front piles 1 and the rear piles 2 are fixedly connected by a top beam 3, the front piles 1 and the rear piles 2 are both ribbed high-pressure jet grouting piles (high-pressure jet grouting piles utilize a high-pressure pump to inject cement slurry into a soil layer through a special nozzle at the end of a drill rod horizontally at a high speed, cut the soil layer by means of impact force of liquid, simultaneously rotate at a certain speed on one side of the drill rod, slowly lift at a low speed, fully stir, mix and solidify the soil body and the cement slurry to form a cylindrical solid body with a certain strength, thereby reinforcing a foundation), the front piles 1 and the rear piles 2 are both arranged in an inclined manner, and the bottom ends of the front piles 1 and the rear piles 2 are respectively located at two sides of a vertical projection of the top beam 3, the lower parts of the front row of piles 1 and the rear row of piles 2 are all embedded into the ground, namely the upper part of the body of the front row of piles 1 and the upper part of the body of the rear row of piles 2 are arranged on the bottom line 5 of the side slope. The pile body improves the mechanical property of the retaining structure, reduces the requirements of the embedding conditions of the piles, improves the stability of the supporting structure, is convenient and quick to construct, reduces the cost and the construction difficulty of foundation pit supporting, improves the reliability of a supporting structure system, and is convenient to popularize and apply. In the process of implementing the high-pressure jet grouting pile process, the high-pressure jet grouting pile is manufactured, the soil layer around the high-pressure jet grouting pile can be reinforced, and the supporting and blocking strength of the supporting and blocking structure is improved.

Preferably, the diameters of the front row piles 1 and the rear row piles 2 are 300mm-1000mm, and the diameters of the front row piles 1 and the rear row piles 2 are 300mm-1000mm, so that on one hand, the strength of the whole pile body is ensured, and on the other hand, the diameters are not too large, so that construction is not influenced. The number of the steel bars in the front row of piles 1 and the rear row of piles 2 is 1-3, the diameter of the steel bars is larger than or equal to 25mm, the steel bars with the diameter of 1-3 and larger than or equal to 25mm are adopted in the front row of piles 1 and the rear row of piles 2, the strength of the front row of piles 1 and the strength of the rear row of piles 2 are ensured, and excessive internal steel bars are avoided, so that construction is not facilitated.

In this embodiment, the length of the front row piles 1 and the rear row piles 2 embedded in the ground is one third to one half of the total length thereof, and the length of the front row piles 1 and the rear row piles 2 embedded in the ground is one third to one half of the total length thereof, so that the stability of fixing the front row piles 1 and the rear row piles 2 is ensured. The included angle between the front row of piles 1 and the rear row of piles 2 and the horizontal direction is 10-20 degrees, the included angle between the front row of piles 1 and the horizontal direction between the rear row of piles 2 and the horizontal direction is 10-20 degrees, the strength of a soil body between the front row of piles 1 and the rear row of piles 2 after construction is convenient after the construction of the pressurized jet grouting piles, and when the included angle is too large, the strength of the soil layer cannot be ensured, so that the retaining effect is influenced.

In the embodiment, the pile hole opening positions are on the same straight line, the front row piles 1 incline outwards and the rear row piles 2 incline inwards at intervals, the top piles are provided with top beams 3 with high rigidity, the top beams 3 are of reinforced concrete structures, pile reinforcing steel bars are anchored into the top beams 3 to form a whole, and the top surfaces of the top beams 3 are higher than the top line of the side slope 4500 mm.

The high-pressure jet grouting pile comprises a front row of high-pressure jet grouting piles, a rear row of high-pressure jet grouting piles and a top beam 3, wherein the front row of piles 1 and the rear row of piles 2 are arranged on a straight line in a staggered mode on the plane and are also shaped like a Chinese character 'ren' on the side face, the front row of piles and the rear row of piles 2 are rigidly connected through the top beam 3 to form a door-shaped structure, the mechanical property of a retaining structure is improved, the requirements of the embedding and fixing conditions of the piles are lowered, the stability of a supporting structure is improved, the construction is convenient and rapid, the cost and the construction difficulty of foundation pit supporting are lowered, the reliability of a supporting structure system is improved, and the supporting structure is convenient to popularize and apply.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a high pressure spouts pile foundation hole soon and keeps off structure, its characterized in that, back campshed (2) including a plurality of parallel arrangement's preceding campshed (1) and a plurality of parallel arrangement, preceding campshed (1) with back campshed (2) crisscross interval sets up, preceding campshed (1) with back campshed (2) top is through back timber (3) fixed connection, preceding campshed (1) with back campshed (2) are muscle high pressure spouts the stake soon, preceding campshed (1) with back campshed (2) all slope the setting, just the bottom of preceding campshed (1) and the bottom of back campshed (2) is located respectively the both sides of the vertical projection of back timber (3), preceding campshed (1) with the lower part of back campshed (2) is all in the embedding ground.

2. A high-pressure jet grouting combined pile foundation pit retaining structure according to claim 1, characterized in that the diameter of the front row pile (1) and the rear row pile (2) is 300mm-1000 mm.

3. The high-pressure jet grouting combined pile foundation pit supporting and retaining structure according to claim 2, wherein the number of steel bars in the front row pile (1) and the rear row pile (2) is 1-3, and the diameter of the steel bars is more than or equal to 25 mm.

4. A high-pressure jet grouting combined pile foundation pit retaining structure according to any one of claims 1 to 3, wherein the length of embedding the front row piles (1) and the rear row piles (2) in the ground is one third to one half of the overall length thereof.

5. A high-pressure jet grouting combined pile foundation pit retaining structure according to any one of claims 1 to 3, characterized in that the included angle of the front row pile (1) and the rear row pile (2) with the horizontal direction is 10-20 °.

6. A high pressure jet grouting combined pile foundation pit retaining structure according to any one of claims 1 to 3, characterized in that the top beam (3) is a reinforced concrete structure, and the top ends of the steel bars in the front row of piles (1) and the rear row of piles (2) are anchored into the top beam (3).