CN217399664U

CN217399664U - Foundation pit supporting structure close to existing building

Info

Publication number: CN217399664U
Application number: CN202220682225.XU
Authority: CN
Inventors: 王可新; 关博文; 邢伟亮
Original assignee: Beijing Geological Engineering Co ltd
Current assignee: Beijing Geological Engineering Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-09
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to a be close to foundation ditch supporting construction of existing building, it includes many protects slope stake, many first props stake, many second props stake and landing stage, many it evenly sets up, many to protect slope stake interval first props the even setting of stake interval, and adjacent the stake interval of first props is greater than adjacent protect the stake interval of slope stake, just first props the stake connection protect the pile-top of slope stake, the second props the stake setting and is in first props the stake and is close to one side of having the building, the landing stage sets up first props with the second props between the stake, just the landing stage is located first prop with the second props the stake and keeps away from the one end of slope protection stake. This application has the effect that reduces and strut the cost.

Description

Foundation pit supporting structure close to existing building

Technical Field

The application relates to the field of foundation pit support, in particular to a foundation pit support structure close to an existing building.

Background

With the continuous development of economy and urbanization, the land utilization rate is higher and higher, and a plurality of foundation pits to be dug are closer to the existing buildings.

When a certain distance exists between the foundation pit to be excavated and the existing building, a safety channel needs to be reserved between the foundation pit to be excavated and the existing building, and when the safety channel is reserved, double rows of slope protection piles need to be arranged to support the safety channel, but the construction cost for supporting the safety channel by the double rows of slope protection piles is greatly increased.

SUMMERY OF THE UTILITY MODEL

In order to reduce construction cost, the application provides a foundation pit supporting structure close to the existing building.

The application provides a be close to foundation ditch supporting construction of having building, adopts following technical scheme:

the utility model provides a be close to foundation ditch supporting construction of having building, includes many pile, many first fender pile, many second fender pile and trestle of protecting slope stake interval and evenly sets up, many first fender pile interval evenly sets up, and is adjacent the pile interval of first fender pile is greater than adjacent protect the pile interval of slope stake, just first fender pile is connected protect the pile bolck of slope stake, the second props up the pile setting and is in first fender pile is close to one side of having had the building, the trestle sets up first fender pile with between the second props up the pile, just the trestle is located first fender pile with the second props up the pile and keeps away from protect the one end of slope stake.

By adopting the technical scheme, the first supporting pile and the second supporting pile are arranged, the trestle is poured on the first supporting pile and the second supporting pile to form the safety channel, the first supporting pile and the second supporting pile replace double-row slope protection piles, and the pile distance between the first supporting pile and the second supporting pile is larger than that between the first supporting pile and the second supporting pile, so that the construction cost is reduced.

Optionally, the pile tops of the first supporting pile and the second supporting pile are provided with trapezoidal grooves.

Through adopting above-mentioned technical scheme, when pouring the landing stage, can form the anchor piece in the dovetail groove to make landing stage and first support stake, second support stake be connected more firmly.

Optionally, a hollow structure is arranged between the first support pile and the second support pile.

By adopting the technical scheme, the soil body between the first supporting pile and the second supporting pile is dug to form a hollow structure, so that the first supporting pile is prevented from receiving soil pressure.

Optionally, an anchor rod is driven between the adjacent slope protection piles.

Optionally, one first supporting pile is arranged at every two slope protection piles.

Through adopting above-mentioned technical scheme, first support stake interval sets up rationally, can stabilize the bearing landing stage to can reduce construction cost as far as.

Optionally, the first supporting pile and the slope protection pile are integrally cast.

By adopting the technical scheme, the first supporting pile and the second supporting pile are connected more tightly.

Optionally, the trestle is a reinforced concrete cast-in-place structure.

Optionally, the second support stake is attached to the existing building foundation.

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

1. the first support pile and the second support pile are arranged, and the trestle is poured on the first support pile and the second support pile to form a safety channel, the first support pile and the second support pile replace double-row slope protection piles, and the pile spacing between the first support pile and the second support pile is larger than that of the slope protection piles, so that the construction cost is reduced;

2. when the trestle is poured, an anchoring block can be formed in the trapezoidal groove, so that the trestle is connected with the first support pile and the second support pile more firmly;

3. first support stake interval sets up rationally, can stabilize the bearing landing stage to can reduce construction cost as far as.

Drawings

FIG. 1 is a side sectional view of the present application.

Fig. 2 is an enlarged view of a in fig. 1.

Description of reference numerals: 1. slope protection piles; 2. a first underpinning pile; 21. a trapezoidal groove; 22. an anchoring groove; 3. a second rest peg; 4. a trestle; 5. an anchor rod; 6. a hollow structure; 7. and (5) waiting for excavation of a foundation pit.

Detailed Description

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

The embodiment of the application discloses a foundation pit supporting structure close to an existing building. Referring to fig. 1, the foundation pit supporting structure includes a slope protection pile 1, a first support pile 2, a second support pile 3, and a trestle 4.

Slope protection stake 1 sets up in waiting to excavate one side that foundation ditch 7 is close to existing building, slope protection stake 1 is reinforced concrete cast-in-place structure, and slope protection stake 1 is provided with many, and many slope protection stake 1 evenly set up along waiting to excavate foundation ditch 7 excavation direction interval, and the pile bolck elevation of slope protection stake 1 is the same with existing building foundation base elevation, and the pile bolck elevation of slope protection stake 1 sets up according to the degree of depth of waiting to excavate foundation ditch 7.

Anchor rods 5 are respectively driven between the adjacent slope protection piles 1, and the anchor rods 5 are anchored into soil layers of the slope protection piles 1 close to the existing building; one side of the slope protection pile 1 close to the foundation pit 7 to be excavated is further provided with a waist beam, the waist beam comprises two I-shaped steels, the two I-shaped steels are arranged at intervals along the vertical direction, the anchor rod 5 is arranged between the two I-shaped steels in a penetrating mode, the anchor rod 5 is sleeved with a lock, the lock is locked, and the waist beam is fixed on the slope protection pile 1.

First support pile 2 is connected on slope protection stake 1, and the pile bottom of first support pile 2 is connected with slope protection stake 1's pile bolck, and first support pile 2's pile bolck elevation and nature ground elevation parallel and level. The first supporting piles 2 are arranged in a plurality of numbers, the first supporting piles 2 are also evenly arranged at intervals along the excavation direction of the foundation pit 7 to be excavated, the distance between the adjacent first supporting piles 2 is larger than the distance between the adjacent slope protection piles 1, and one first supporting pile 2 can be arranged at intervals of two or three slope protection piles 1. Further, the shaping is pour with 1 integrative of slope protection stake to first support stake 2, makes first support stake 2 be connected more firm with slope protection stake 1.

The second supporting piles 3 are arranged on one side, close to the existing building, of the first supporting piles 2, the second supporting piles 3 are attached to the foundation of the existing building, and the second supporting piles 3 correspond to the first supporting piles 2 one to one. The elevation of the pile top of the second supporting pile 3 is flush with the elevation of the natural ground, and the pile bottom of the second supporting pile 3 extends to the position below the foundation bottom of the existing building, so that the second supporting pile 3 is more stable.

The original soil body between the first supporting pile 2 and the second supporting pile 3 is dug out, so that a hollow structure 6 is formed between the first supporting pile 2 and the second supporting pile 3, and the driving soil pressure born by the first supporting pile 2 is reduced, so that the first supporting pile 2 is more stable.

Referring to fig. 1 and 2, a trestle 4 is arranged at the pile top positions of a first support pile 2 and a second support pile 3, the trestle 4 is of a reinforced concrete cast-in-situ structure, trapezoidal grooves 21 are respectively formed in the end surfaces of the pile top of the first support pile 2 and the pile top of the second support pile 3, the length of the upper side of each trapezoidal groove 21 is smaller than that of the lower side of each trapezoidal groove, an anchor groove 22 is further formed in each trapezoidal groove 21, each anchor groove 22 is communicated with each trapezoidal groove 21, each anchor groove 22 is obliquely arranged, and each anchor groove 22 obliquely inclines downwards from one end far away from each trapezoidal groove 21 to one end close to each trapezoidal groove 21. When the trestle 4 is poured, the concrete poured into the trapezoidal groove 21 and the anchoring groove 22 forms an anchoring block, so that the trestle 4 is connected with the first supporting pile 2 and the second supporting pile 3 more firmly.

The implementation principle of the foundation pit supporting structure close to the existing building in the embodiment of the application is as follows: this application is through setting up first prop up a stake 2, second prop up a stake 3, and prop up a 3 pile tops at first prop up a stake 2 and second and pour formation landing stage 4, form the escape way, and set up first prop up a stake 2 and second at one side of having the building, first slope protection stake 1 and second slope protection stake 1 do not receive lateral soil pressure, only be used for bearing landing stage 4, consequently first slope protection stake 1 and second slope protection stake 1's pile interval sets up the pile interval that is greater than slope protection stake 1, thereby construction cost has been practiced thrift.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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. A foundation pit supporting structure close to an existing building is characterized in that: including many fender slope stake (1), many first prop stake (2), many second prop stakes (3) and trestle (4), many it evenly sets up, many to protect slope stake (1) interval first prop stake (2) interval evenly sets up, and is adjacent the stake interval of first prop stake (2) is greater than adjacent protect the stake interval of slope stake (1), just first prop stake (2) are connected protect the pile-top of slope stake (1), second prop stake (3) set up first prop stake (2) are close to one side of having had the building, trestle (4) set up first prop stake (2) with between second prop stake (3), just trestle (4) are located first prop stake (2) with second prop stake (3) keep away from the one end of protecting slope stake (1).

2. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: the pile tops of the first supporting pile (2) and the second supporting pile (3) are provided with trapezoidal grooves (21).

3. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: and a hollow structure (6) is arranged between the first supporting pile (2) and the second supporting pile (3).

4. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: an anchor rod (5) is driven between the adjacent slope protection piles (1).

5. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: and one first supporting pile (2) is arranged at every two interval slope protection piles (1).

6. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: the first supporting pile (2) and the slope protection pile (1) are integrally cast.

7. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: the trestle (4) is of a reinforced concrete cast-in-place structure.

8. A supporting structure for a foundation pit adjacent an existing building according to claim 1, wherein: the second support pile (3) is attached to the existing building foundation.