CN212772392U

CN212772392U - Energy-saving combined pile for building foundation engineering

Info

Publication number: CN212772392U
Application number: CN202021480778.4U
Authority: CN
Inventors: 周立娜; 周进兵; 周亚威
Original assignee: Guangdong Hongtang Infrastructure Engineering Co ltd
Current assignee: Guangdong Hongtang Infrastructure Engineering Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-03-23
Anticipated expiration: 2030-07-23

Abstract

The application relates to the field of building support, in particular to an energy-saving combined pile for building foundation engineering, which comprises a support layer and a reinforcing layer; the supporting layer is formed by mutually meshing a plurality of meshed piles; the reinforcing layer is attached to the supporting layer and formed by splicing a plurality of high-pressure jet grouting piles; the high-pressure jet grouting pile comprises a first connecting part, a second connecting part and a supporting part; the first connecting part is fixedly connected with the supporting layer; and the second connecting part is fixedly connected with the adjacent high-pressure jet grouting pile. This application has the effect that satisfies water proof demand, simultaneously low price, construction is simple.

Description

Energy-saving combined pile for building foundation engineering

Technical Field

The application relates to the field of building support, in particular to an energy-saving combined pile for building foundation engineering.

Background

In the building construction process, a foundation pit needs to be excavated, wherein the foundation pit is an earth pit excavated at the design position of a foundation according to the elevation of the foundation and the plane size of the foundation. After the foundation pit is excavated, a support structure needs to be arranged around the foundation pit to support the foundation pit.

In the existing foundation pit enclosure structure, row piles and underground continuous walls are two common enclosure structure forms. The row pile enclosure structure is mostly circular section bored concrete piles, and rigidity and bearing capacity are limited, and the disconnect-type row pile can not the water proof, to needs water proof foundation ditch engineering, when using row pile enclosure structure, often need add closed water-stop curtain. When the depth of the foundation pit is large and the surrounding environment is sensitive, the underground continuous wall is often needed to be used as the enclosure structure of the foundation pit, and the underground continuous wall is mostly used as the enclosure structure. The underground continuous wall has the advantages of large section bending rigidity and good integrity, but has the problems of high manufacturing cost, complex construction of a groove section and the like.

Disclosure of Invention

In order to meet the requirement of water insulation, meanwhile, the composite pile is low in price and simple in construction, and the application provides the energy-saving composite pile for the building foundation engineering and the construction method thereof.

The application provides an energy-conserving composite pile that building foundation engineering used adopts following technical scheme:

an energy-saving combined pile for building foundation engineering comprises a supporting layer and a reinforcing layer; the supporting layer is formed by mutually meshing a plurality of meshed piles;

the reinforcing layer is attached to the supporting layer and formed by splicing a plurality of high-pressure jet grouting piles; the high-pressure jet grouting pile comprises a first connecting part, a second connecting part and a supporting part;

the first connecting part is fixedly connected with the supporting layer;

and the second connecting part is fixedly connected with the adjacent high-pressure jet grouting pile.

By adopting the technical scheme, the supporting layer is formed by mutually meshing a plurality of secant piles, the engineering gap of the secant pile is smaller, so that a better water-proof function is achieved, the reinforcing layer and the supporting layer are mutually attached, so that the bending strength of the supporting layer is enhanced, the first connecting part is used for connecting the high-pressure rotary jet pile with the supporting layer, when the supporting layer receives a bending moment, the bending moment is transmitted to the supporting part through the first connecting part, the supporting part shares the bending moment, so that the supporting layer is protected from being damaged easily, meanwhile, the high-pressure rotary jet pile is fixedly connected with the adjacent high-pressure rotary jet pile through the second connecting part, so that the moment can be shared onto the adjacent high-pressure rotary jet pile, the supporting effect is further enhanced, the structure is simple, and the construction; in conclusion, the energy-saving combined pile for the building foundation engineering meets the water-resisting requirement, and is low in price and simple in construction.

The cross section of the part, fixedly connected with each occluding pile, of the first connecting part is as large as that of the first connecting part.

Through adopting above-mentioned technical scheme for the extreme point of the engineering seam of two adjacent secant piles just in time is located the intermediate position of first connecting portion cross section, and first connecting portion make the water proof effect of a protective layer better promptly, and the structure symmetry, and the atress is even, and stress is difficult for concentrating.

Preferably, the arc corresponding to the first engaging portion is 60 °, the arc corresponding to the first connecting portion is 120 °, and the arc corresponding to the second connecting portion is 60 °.

By adopting the technical scheme, the structural strength between the reinforcing layer and the supporting layer is uniform, and the stress is not easy to concentrate.

Preferably, every three secant piles are one unit, the secant piles at two sides are provided with first secant grooves, the secant pile at the middle is provided with first secant blocks at the position of the secant grooves, and the secant grooves are matched to form a first secant part.

Through adopting above-mentioned technical scheme, realize the mutual interlock between the secant pile, and interlock fastening between the secant pile.

Preferably, the reinforcing layer is provided as two layers which are located on both sides of the supporting layer.

By adopting the technical scheme, the two layers are arranged, so that the water-resisting performance and the supporting effect of the whole supporting pile closed enclosure system are better.

Preferably, longitudinal steel bars are arranged inside the reinforcing layer.

Through adopting above-mentioned technical scheme, longitudinal reinforcement is used for strengthening the bending strength of enhancement layer.

Preferably, the high-pressure jet grouting pile is provided with a second occlusion groove and a second occlusion block, and the second occlusion groove on the high-pressure jet grouting pile is matched with the second occlusion block on the adjacent high-pressure jet grouting pile to form a second occlusion part.

Through adopting above-mentioned technical scheme, realize the interconnect between the high pressure jet grouting pile.

In summary, the present application includes at least one of the following beneficial technical effects:

the energy-saving composite pile for the building foundation engineering meets the water-resisting requirement, and is low in price and simple in construction;

be equipped with first connecting portion on the rotatory stake of high pressure, first connecting portion make the water proof effect of a protective layer better, and the structure symmetry, the atress is even, and stress is difficult for concentrating.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an energy-saving composite pile for building foundation engineering according to the present application.

Fig. 2 is a flow chart of a construction method of an energy-saving composite pile for building foundation engineering according to the present application.

Description of reference numerals: 1. a supporting layer; 11. an occlusive pile; 111. a first engaging portion; 112. a first bite groove; 113. a first bite block; 2. a reinforcing layer; 21. high-pressure jet grouting piles; 211. a first connection portion; 212. a second connecting portion; 213. a support section; 214. a second engagement groove; 215. a second bite block; 22. longitudinal reinforcing steel bars.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses an energy-saving combined pile for building foundation engineering. Referring to fig. 1, an energy-saving composite pile for building foundation engineering includes a supporting layer 1 and a reinforcing layer 2; the supporting layer 1 is formed by mutually meshing a plurality of meshing piles 11; the reinforcing layer 2 is attached to the supporting layer 1, and the reinforcing layer 2 is formed by splicing a plurality of high-pressure jet grouting piles 21.

Referring to fig. 1, the high-pressure jet grouting pile 21 includes a first connection portion 211, a second connection portion 212, and a support portion 213; the first connecting part 211 is fixedly connected with the supporting layer 1; the second connecting portion 212 is fixedly connected to the adjacent high-pressure jet grouting pile 21.

Referring to fig. 1, the portions of the snap piles 11 that engage with each other are first engaging portions 111, a first connecting portion 211 on one high-pressure rotary pile is fixedly connected to two snap piles 11, and the cross section of the portion where the first connecting portion 211 is fixedly connected to each snap pile 11 is as large as the cross section of the first connecting portion 211. Make the extreme point of the engineering seam of two adjacent secant piles 11 just in time be located the intermediate position of first connecting portion 211 cross section, first connecting portion 211 makes the water proof effect of a supporting layer 1 better promptly, and the structure symmetry, and the atress is even, and stress is difficult for concentrating.

In one embodiment of the present application, the first engaging portion 111 corresponds to an arc of 60 °, the first connecting portion 211 corresponds to an arc of 120 °, and the second connecting portion 212 corresponds to an arc of 60 °. The structure strength between the reinforcing layer 1 and the supporting layer 1 is uniform, and the stress is not easy to concentrate.

Every three occluding piles 11 are a unit, first occluding grooves 112 are formed in the occluding piles 11 on two sides, first occluding blocks 113 are arranged at the positions, located in the occluding grooves, of the occluding piles 11 in the middle, and the first occluding parts 111 are formed by the engagement of the occluding grooves and the occluding grooves. The high-pressure jet grouting pile 21 is provided with a second engagement groove 214 and a second engagement block 215, and the second engagement groove 214 on the high-pressure jet grouting pile 21 and the second engagement block 215 on the adjacent high-pressure jet grouting pile 21 are matched to form a second engagement part.

With reference to fig. 1, the reinforcing layer 2 is provided with two layers which are located at two sides of the supporting layer 1, and the two layers make the water-resisting performance and the supporting effect of the whole supporting pile closed enclosure system better.

Referring to fig. 1, the reinforcing layer 2 is provided with longitudinal reinforcing bars 22 inside, and the longitudinal reinforcing bars 22 are used to enhance the bending strength of the reinforcing layer 2.

The implementation principle of the energy-saving combined pile for the building foundation engineering is as follows: the supporting layer 1 is formed by mutually meshing the secant piles 11, the engineering gap of the secant pile 11 is small, and therefore the supporting layer 1 has a good water-resisting function and is attached to the supporting layer 1 through the reinforcing layer 2, so that the bending strength of the supporting layer 1 is enhanced, and the structure is simple and convenient to construct.

First connecting portion 211 is used for being connected high pressure jet grouting pile 21 and supporting layer 1, when a protection layer 1 received the moment of flexure, transmits to supporting portion 213 through first connecting portion 211, and supporting portion 213 shared the moment of flexure to the protection is propped protection layer 1 and is not fragile, and simultaneously, high pressure jet grouting pile 21 passes through second connecting portion 212 and adjacent high pressure jet grouting pile 21 fixed connection, makes moment can share to adjacent high pressure jet grouting pile 21 on, further reinforcing strut effect.

In conclusion, the energy-saving combined pile for the building foundation engineering meets the water-resisting requirement, and is low in price and simple in construction.

The embodiment of the application also discloses a construction method of the energy-saving combined pile for the building foundation engineering. Referring to fig. 2, a method for constructing an energy-saving composite pile for construction foundation works,

s1, leveling the ground to a designed elevation, excavating a mixing pile construction guide groove and removing obstacles.

And S2, drilling according to construction specifications, and pouring the occlusive pile 11 to form a supporting layer 1.

Specifically, in S2, when the supporting layer 1 is poured, every three secant piles 11 are poured as a unit, the secant piles 11 located on both sides in one unit are poured first, a secant groove is reserved during pouring, then the secant pile 11 located in the middle is poured, and the process is circulated in sequence. When the occlusive pile 11 in the middle is poured, a steel reinforcement cage is placed firstly, then concrete is poured, and the occlusive pile 11 is formed after the concrete is solidified.

And S3, pouring reinforcing layers 2 on two sides of the supporting layer 1.

Specifically, in S3, when the reinforcing layers 2 are cast, the reinforcing layers 2 on both sides are cast simultaneously. When the reinforcing layer 2 is poured, longitudinal steel bars 22 are pre-placed in the reinforcing layer 2.

S4, testing and quality inspection.

The implementation principle of the construction method of the energy-saving combined pile for the building foundation engineering in the embodiment of the application is as follows: by the construction method of the energy-saving composite pile for the building foundation engineering, the construction of the energy-saving composite pile for the building foundation engineering is realized; mutual occlusion of the occlusive piles 11 is realized, the engineering seam is small, the construction is convenient, and the occlusive piles 11 constructed in the way are occluded and fastened; if the reinforcing layers 2 on the two sides of the supporting layer 1 are poured in sequence, the volume change of the concrete poured firstly when the concrete is solidified has certain thrust or tensile force on the supporting layer 1, so that the supporting layer 1 has a certain amount of deformation, then when the other side is poured, the two sides are possibly asymmetric due to the deformation of the supporting layer 1, internal stress concentration is possibly generated, the supporting layer 1 or the reinforcing layers 2 are easy to damage, the reinforcing layers 2 on the two sides are poured simultaneously, the occurrence of the condition is further reduced, and the safety of the energy-saving composite pile for building foundation engineering is enhanced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an energy-conserving composite pile that building foundation engineering used which characterized in that: comprises a supporting layer (1) and a reinforcing layer (2); the supporting layer (1) is formed by mutually meshing a plurality of meshed piles (11);

the reinforcing layer (2) is attached to the supporting layer (1), the reinforcing layer (2) is formed by splicing a plurality of high-pressure jet grouting piles (21), and each high-pressure jet grouting pile (21) comprises a first connecting part (211), a second connecting part (212) and a supporting part (213);

the first connecting part (211) is fixedly connected with the supporting layer (1);

the second connecting part (212) is fixedly connected with the adjacent high-pressure jet grouting pile (21).

2. The energy-saving composite pile for the building foundation engineering according to claim 1, characterized in that: the mutual meshing parts of the snap piles (11) are first meshing parts (111), the first connecting part (211) on one high-pressure rotating pile is fixedly connected with the two snap piles (11), and the cross section of the part, fixedly connected with each snap pile (11), of the first connecting part (211) is as large as that of the first connecting part (211).

3. The energy-saving composite pile for the building foundation engineering according to claim 2, characterized in that: the radian corresponding to the first meshing part (111) is 60 degrees, the radian corresponding to the first connecting part (211) is 120 degrees, and the radian corresponding to the second connecting part (212) is 60 degrees.

4. The energy-saving composite pile for the building foundation engineering according to claim 3, wherein: every three secant piles (11) are taken as a unit, the secant piles (11) positioned at two sides are provided with first secant grooves (112), the secant pile (11) positioned in the middle is provided with first secant blocks (113) at the positions of the secant grooves, and the secant grooves are matched to form first secant parts (111).

5. The energy-saving composite pile for the building foundation engineering according to any one of claims 1 to 4, characterized in that: the reinforcing layers (2) are arranged into two layers which are positioned at two sides of the supporting layer (1).

6. The energy-saving composite pile for the building foundation engineering according to claim 5, wherein: longitudinal steel bars (22) are arranged in the reinforcing layer (2).

7. The energy-saving composite pile for the building foundation engineering according to claim 6, wherein: and a second occlusion groove (214) and a second occlusion block (215) are formed in the high-pressure jet grouting pile (21), and the second occlusion groove (214) in the high-pressure jet grouting pile (21) is matched with the second occlusion block (215) in the adjacent high-pressure jet grouting pile (21) to form a second occlusion part.