CN219045160U

CN219045160U - Basement foundation pit supporting structure close to existing highway

Info

Publication number: CN219045160U
Application number: CN202223205685.2U
Authority: CN
Inventors: 王健; 刘小奇; 罗伟; 王百超; 姚元朝; 郭洪波; 杜超; 蒋亮; 周聪; 陈浩
Original assignee: Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Current assignee: Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-19
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a basement foundation pit supporting structure close to an existing highway, which comprises a basement, a foundation pit arranged on one side of the basement, a basement outer wall connected to the outer side of the basement and positioned between the basement and a foundation, a supporting foundation arranged at the bottom of the foundation pit, a retaining wall arranged on the supporting foundation and positioned on one side of a slope protection, a steel support connected between the retaining walls, a slope protection short rib and an oblique anchor rib arranged in the slope protection, and a steel enclosing purlin and a steel pipe pile connected between the slope protection and the retaining wall. According to the utility model, by setting the slope protection, the slope protection of the existing road is ensured, and multiple fixing can be realized by the slope protection short ribs and the oblique insertion anchor ribs, so that the normal operation of the existing road is ensured; the combined arrangement of the steel purlin and the steel pipe pile is beneficial to treating foundation soil and ensures the safe excavation of the foundation pit; through the joint setting of barricade and steel support, further guaranteed the support of working face, and steel support can be conveniently loaded and unloaded, can be very big save the engineering time.

Description

Basement foundation pit supporting structure close to existing highway

Technical Field

The utility model belongs to the technical field of wall construction, and particularly relates to a basement foundation pit supporting structure adjacent to an existing highway.

Background

When the basement is constructed, the excavation of the foundation pit is required. The foundation pit is excavated, and the foundation pit is supported in the process of excavating the foundation pit, so that the safe construction of the basement can be ensured. The general foundation pit support adopts the support modes such as row pile support, pile support or pile anchor, etc., and the support can be when there is not building or infrastructure in the periphery, and when the construction of basement especially multilayer basement especially needs to carry out what kind to the support to the design, under the condition that the stack exists existing road, its design of support just is more complicated and has pertinence, both guarantees the normal operating of existing facility, needs to guarantee the safety of construction again, from this needs to carry out special design.

Disclosure of Invention

The utility model provides a basement foundation pit supporting structure close to an existing road, which is used for solving the technical problems of slope protection, foundation treatment, enclosure supporting and the like of the basement foundation pit under the existing road.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a basement foundation pit supporting structure close to an existing highway comprises a basement, a foundation pit arranged on one side of the basement, a basement outer wall connected to the outer side of the basement and positioned between the basement and a foundation, a supporting foundation arranged at the bottom of the foundation pit, a retaining wall arranged on the supporting foundation and positioned on one side of a slope protection, a steel support connected between the retaining walls, a slope protection short rib and an oblique anchor rib arranged in the slope protection, and a steel enclosing purlin and a steel pipe pile connected between the slope protection and the retaining wall;

the revetment is located the barricade outside and revetment slope top department is provided with existing road, still is provided with buffer platform between revetment and the barricade.

Further, the basement is formed by arranging a plurality of layers of floors of the foundation pit corresponding to the basement; the supporting foundation top of foundation ditch bottom flushes the setting with the floor top.

Furthermore, a cushion layer is arranged below the supporting foundation and is formed by setting plain concrete; the supporting foundation is arranged between the steel pipe pile and the basement outer wall.

Further, the steel pipe pile stretches into the soil body, and the stretching length is at least half of the stretching length; and concrete is filled in the steel pipe pile.

Furthermore, the steel support is a steel member, steel plates are connected to two ends of the steel support, and planting ribs are arranged between the steel plates and the basement outer wall and/or the retaining wall.

Further, the steel surrounding purlin is H-shaped steel, and the steel surrounding purlin is arranged on the periphery of the foundation pit in a through length mode and is perpendicular to the steel support.

Furthermore, slope protection short ribs are arranged on the inclined plane at intervals, and sprayed concrete surface layers are arranged on one side of the slope protection short ribs, which are positioned on the slope surface.

Further, the oblique insertion anchor bar is arranged on a road shoulder of the existing road, and the included angle between the oblique insertion anchor bar and the vertical direction is smaller than the slope protection short bar.

The beneficial effects of the utility model are as follows:

1) According to the utility model, by setting the slope protection, the slope protection of the existing road is ensured, and multiple fixing can be realized by the slope protection short ribs and the oblique insertion anchor ribs, so that the normal operation of the existing road is ensured;

2) According to the utility model, through the combined arrangement of the steel purlin and the steel pipe pile, the foundation soil body is treated, and the safe excavation of the foundation pit is ensured;

3) The utility model further ensures the support of the working surface through the joint arrangement of the retaining wall and the steel support, and the steel support can be conveniently assembled and disassembled, so that the construction time can be greatly saved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model; the primary object and other advantages of the utility model may be realized and attained by means of the instrumentalities and particularly pointed out in the specification.

Drawings

FIG. 1 is a schematic view of a basement foundation pit supporting structure adjacent an existing highway.

Reference numerals: 1-basement, 2-foundation pit, 3-basement outer wall, 4-supporting foundation, 5-steel pipe pile, 6-retaining wall, 7-steel support, 8-guardrail, 9-steel purlin, 10-bank protection, 11-existing road, 12-bank protection short rib, 13-oblique insertion anchor rib, 14-soil body and 15-buffer platform.

Detailed Description

Taking a newly added externally hung stair foundation pit as an example, the maximum depth of the foundation pit is 4.54m, and the total area of the foundation pit is 208 square meters. The bottom plate of the newly added externally hung stair takes powdery clay as a bearing layer, and the characteristic value of the bearing capacity of the foundation is 380Kpa. Therefore, the foundation pit of the new stair of the project is supported by adopting the structural form of steel pipe pile row piles and single-channel steel structure internal support, and the underground water treatment is not involved. The site of the road edge of the construction area is supported by combining slope releasing with anchor spraying, and the slope releasing adopts 60-degree primary slope releasing.

As shown in fig. 1, a basement foundation pit supporting structure adjacent to an existing highway comprises a basement 1, a foundation pit 2 arranged on one side of the basement 1, a basement outer wall 3 connected to the outer side of the basement 1 and positioned between the basement 1 and a foundation, a supporting foundation 4 arranged at the bottom of the foundation pit 2, a retaining wall 6 arranged on the supporting foundation 4 and positioned on one side of a slope protection 10, a steel support 7 connected between the retaining walls 6, slope protection short ribs 12 and oblique anchor ribs 13 arranged in the slope protection 10, a steel enclosing purlin 9 connected between the slope protection 10 and the retaining wall 6 and steel pipe piles 5; the basement 1 is formed by two layers, and the foundation pit 2 is arranged corresponding to the floor slab of the basement 1; the top of the supporting foundation 4 at the bottom of the foundation pit 2 is flush with the top of the floor slab.

In this embodiment, the slope protection 10 is located outside the retaining wall 6, and an existing road 11 is disposed at the slope top of the slope protection 10, and a buffer platform 15 is further disposed between the slope protection 10 and the retaining wall 6. A cushion layer is arranged below the supporting foundation 4 and is made of plain concrete; the supporting foundation 4 is arranged between the steel pipe pile 5 and the basement outer wall 3.

In this embodiment, the steel pipe pile 5 extends into the soil body 14 and the extending length is at least half of the extending length; the steel pipe pile 5 is filled with concrete. The steel support 7 is a steel member, steel plates are connected to two ends of the steel support 7, and steel planting bars are arranged between the steel plates and the basement outer wall 3 and/or the retaining wall 6. Wherein the top of the retaining wall 6 is also provided with a guard rail 8.

In this embodiment, steel encloses purlin 9 to be H shaped steel, and steel encloses purlin 9 and leads to long setting and set up perpendicularly with steel support 7 in foundation ditch 2 periphery.

In this embodiment, slope protection 10 is provided with slope protection short ribs 12 at intervals on the slope, and slope protection short ribs 12 are provided with a sprayed concrete surface layer on one side of the slope. The oblique insertion anchor bar 13 is arranged on the road shoulder of the existing road 11, and the included angle between the oblique insertion anchor bar 13 and the vertical direction is smaller than the slope protection short bar 12.

The foregoing is merely illustrative of preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present utility model are intended to be included in the scope of the present utility model.

Claims

1. The basement foundation pit supporting structure is characterized by comprising a basement (1), a foundation pit (2) arranged on one side of the basement (1), a basement outer wall (3) connected to the outer side of the basement (1) and positioned between the basement (1) and a foundation, a supporting foundation (4) arranged at the bottom of the foundation pit (2), a retaining wall (6) arranged on the supporting foundation (4) and positioned on one side of a slope protection (10), a steel support (7) connected between the retaining walls (6), a slope protection short rib (12) and an oblique anchor rib (13) arranged in the slope protection (10), and a steel enclosing purlin (9) and a steel pipe pile (5) connected between the slope protection (10) and the retaining wall (6);

the revetment (10) is located the barricade (6) outside and revetment (10) slope top department is provided with current road (11), still is provided with buffer platform (15) between revetment (10) and barricade (6).

2. Basement foundation pit supporting structure adjacent to existing highways according to claim 1, characterized in that the basement (1) is a multi-layer, foundation pit (2) is arranged in correspondence to the floors of basement (1); the top of the supporting foundation (4) at the bottom of the foundation pit (2) is flush with the top of the floor slab.

3. A basement foundation pit supporting structure adjacent to an existing highway according to claim 1, wherein a cushion layer is further arranged below the supporting foundation (4), and the cushion layer is made of plain concrete; the supporting foundation (4) is arranged between the steel pipe pile (5) and the basement outer wall (3).

4. Basement foundation pit supporting structure adjacent to an existing road according to claim 1, characterized in that the steel pipe pile (5) extends into the soil body (14) by at least half the extension; and concrete is filled in the steel pipe pile (5).

5. The basement foundation pit supporting structure adjacent to the existing highway as claimed in claim 1, wherein the steel support (7) is a steel member, steel plates are connected to two ends of the steel support (7), and planting ribs are arranged between the steel plates and the basement outer wall (3) and/or the retaining wall (6).

6. A basement foundation pit supporting structure adjacent to an existing highway according to claim 1, wherein the steel purlin (9) is H-shaped steel, and the steel purlin (9) is arranged on the periphery of the foundation pit (2) in a through length manner and is perpendicular to the steel support (7).

7. Basement foundation pit supporting structure adjacent to existing highways according to claim 1, characterized in that the slope protection (10) is provided with slope protection short ribs (12) at intervals on the slope, and the slope protection short ribs (12) are provided with sprayed concrete surface layer at one side of the slope.

8. The basement foundation pit supporting structure adjacent to the existing highway according to claim 7, wherein the oblique insertion anchor bars (13) are arranged on the road shoulder of the existing highway (11), and the included angle between the oblique insertion anchor bars (13) and the vertical direction is smaller than that between the oblique insertion anchor bars (13) and the slope protection short bars (12).