Ground preset suspender underground excavation structure suitable for soft stratum

Abstract

The utility model discloses a ground preset suspender subsurface excavation structure suitable for soft stratums, which relates to the technical field of construction structures and comprises a ground cover plate and an excavation support structure, the ground cover plate is positioned right above an excavation tunnel, the excavation support structure is arranged on the inner wall of the excavation tunnel, and the excavation support structure is arranged on the inner wall of the excavation tunnel. A plurality of suspender systems are arranged between the ground cover plate and the excavation supporting structure, vertical supporting systems are arranged below the ground cover plate and on the two sides of the excavation supporting structure, and a subsurface tunnel structure is arranged at the bottom of the ground cover plate. According to the utility model, the stability in the tunnel construction process can be improved, the structural form is not only suitable for an arch, but also suitable for a rectangle or any other required forms, the influence of tunnel construction on ground buildings can be reduced, and the pipeline above the tunnel is prevented from being changed and moved when the tunnel is excavated.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction structure technical field, concretely is a ground preset derrick subsurface excavation structure suitable for weak stratum. BACKGROUND

[0002] With the acceleration of urbanization, tunnel and underground space development and utilization are more and more extensive, and the construction demand of large-span tunnel also increases. However, due to the restriction of commercial, enterprise, financial, residential and other building intensive, traffic busy, expensive land, dense underground pipeline and underground structure in the city center, it is more and more difficult to build subsurface tunnel by using traditional method, and the demand for structural form diversity is higher and higher.

[0003] However, the surrounding rock of shallow-buried tunnel usually has the characteristics of weakness, fragmentation, short self-stability time, etc., and if the conventional drilling and blasting method is used, the risk of roof fall, collapse or surface subsidence is easy to occur. In order to reduce the construction risk and ensure the construction safety, a new tunnel structure is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a ground preset derrick subsurface excavation structure suitable for weak stratum to solve the problems in the above background technology.

[0005] In order to achieve the above utility model purposes, the utility model adopts the following technical scheme:

[0006] The utility model provides a ground preset derrick subsurface excavation structure suitable for weak stratum, which comprises a ground cover plate and an excavation support structure, the ground cover plate is located directly above the excavation tunnel, the excavation support structure is arranged at the inner wall of the excavation tunnel,

[0007] Among them, the derrick system is arranged between the ground cover plate and the excavation support structure, the derrick system is provided with a plurality of vertical support systems arranged below the ground cover plate and on both sides of the excavation support structure, and the bottom of the ground cover plate is provided with a subsurface tunnel structure,

[0008] Among them, the subsurface tunnel structure and the ground cover plate are reinforced by clamping soil body.

[0009] Preferably, the excavation support structure comprises two second layer steel frames, two first layer steel frames, a middle first layer steel frame and a middle second layer steel frame,

[0010] Among them, the two second layer steel frames are installed on the inner side of the vertical support system, the two first layer steel frames are installed on the inner side of the two second layer steel frames, and the two first layer steel frames are arranged on the side of the two second layer steel frames,

[0011] The inner side of the two first-layer steel frames is provided with an intermediate second-layer steel frame.

[0012] Preferably, the suspender system comprises an anchoring end, a suspender, an anchor head,

[0013] The bottom of the anchoring end is provided with the suspender, the bottom of the suspender is provided with the anchor head, the suspender penetrates through the ground cover plate, and the anchoring end is installed on the top of the ground cover plate.

[0014] The anchor head is installed on the top of the two second-layer steel frames.

[0015] Preferably, the vertical support system comprises a first steel pipe pile and a second steel pipe pile,

[0016] The first steel pipe pile and the second steel pipe pile are both installed on the bottom of the ground cover plate, the first steel pipe pile is arranged on the side of the second steel pipe pile, and the side of the bottom of the first steel pipe pile and the second steel pipe pile is provided with the two second-layer steel frames.

[0017] Preferably, the tunnel structure comprises a top longitudinal beam, a middle column, a bottom longitudinal beam, two side structures, a top intermediate structure and a bottom intermediate structure,

[0018] The top longitudinal beam is installed on the inner side of the two first-layer steel frames, the bottom of the top longitudinal beam is provided with the middle column, the bottom of the middle column is provided with the bottom longitudinal beam, and the side of the top longitudinal beam and the bottom longitudinal beam is connected through the two side structures.

[0019] The inner side of the two first-layer steel frames is provided with the top intermediate structure, the top intermediate structure is installed between the two top longitudinal beams, and the top intermediate structure is arranged away from one side of the two side structures.

[0020] The bottom intermediate structure is installed between the two bottom longitudinal beams and is arranged below the top intermediate structure.

[0021] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0022] Through the design of the suspender system, the excavation support structure, the vertical support system and the tunnel structure, the stability in the tunnel construction process can be improved, the structure form is not only suitable for arch shape, but also suitable for rectangular or any other required form, the influence of the tunnel construction on the ground buildings can be reduced, and the pipeline above the tunnel is avoided from being relocated when the tunnel is excavated. Meanwhile, the construction method is simple and reliable, and easy to implement. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of this application provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application.

[0024] In addition, the terms "mount", "set", "provided with", "connect", "connect", "socket" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0025] Figure 1 is a structural schematic view of the whole construction of the present application after completion;

[0026] Figure 2 is a structural schematic view of the ground cover plate and the vertical support system construction of the present application;

[0027] Figure 3 is a structural schematic view of the construction of the present application when the boom system is constructed;

[0028] Figure 4 is a structural schematic view of the construction of the present application after completion of the two side structures;

[0029] In the drawings:

[0030] 1, ground cover plate;

[0031] 2, excavation support structure; 21, second layer steel frame on both sides; 22, first layer steel frame on both sides; 23, first layer steel frame in the middle; 24, second layer steel frame in the middle;

[0032] 3, boom system; 31, anchoring end; 32, boom; 33, anchor head;

[0033] 4, vertical support system; 41, first steel pipe pile; 42, second steel pipe pile;

[0034] 5, tunnel structure of underground excavation; 51, top longitudinal beam; 52, middle column; 53, bottom longitudinal beam; 54, two side structures; 55, top middle structure; 56, bottom middle structure. DETAILED DESCRIPTION

[0035] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-4 A ground preset suspender underground excavation structure suitable for a weak stratum comprises a ground cover plate 1 and an excavation support structure 2, the ground cover plate 1 is located directly above an excavation tunnel, the excavation support structure 2 is arranged at the inner wall of the excavation tunnel, wherein a suspender system 3 is arranged between the ground cover plate 1 and the excavation support structure 2, the suspender system 3 is provided in plurality, a vertical support system 4 is arranged below the ground cover plate 1 and on both sides of the excavation support structure 2, and a bottom of the ground cover plate 1 is provided with an underground excavation tunnel structure 5, wherein the underground excavation tunnel structure 5 and the ground cover plate 1 are reinforced by clamping soil bodies.

[0037] The excavation support structure 2 comprises two-side second-layer steel frames 21, two-side first-layer steel frames 22, a middle first-layer steel frame 23 and a middle second-layer steel frame 24, wherein the two-side second-layer steel frames 21 are installed on the inner side of the vertical support system 4, the two-side first-layer steel frames 22 are installed on the inner side of the two-side second-layer steel frames 21, and the two-side first-layer steel frames 22 are arranged on the side of the two-side second-layer steel frames 21, wherein the middle second-layer steel frame 24 is installed on the inner side of the two-side first-layer steel frames 22, and the middle second-layer steel frame 24 is arranged on the side of the two-side second-layer steel frames 21.

[0038] The suspender system 3 comprises an anchoring end 31, a suspender 32 and an anchor head 33, wherein the suspender 32 is installed at the bottom of the anchoring end 31, the anchor head 33 is installed at the bottom of the suspender 32, the suspender 32 is arranged through the ground cover plate 1, and the anchoring end 31 is installed at the top of the ground cover plate 1, wherein the anchor head 33 is installed at the top of the two-side second-layer steel frames 21.

[0039] The vertical support system 4 comprises a first steel pipe pile 41 and a second steel pipe pile 42, wherein the first steel pipe pile 41 and the second steel pipe pile 42 are both installed at the bottom of the ground cover plate 1, the first steel pipe pile 41 is arranged on the side of the second steel pipe pile 42, and the two-side second-layer steel frames 21 are installed on the side of the bottom of the first steel pipe pile 41 and the second steel pipe pile 42.

[0040] The tunnel structure 5 comprises a top longitudinal beam 51, a middle column 52, a bottom longitudinal beam 53, two side structures 54, a top middle structure 55 and a bottom middle structure 56, wherein the top longitudinal beam 51 is installed on the inner side of the first layer steel frame 22 on the two sides, the bottom of the top longitudinal beam 51 is provided with the middle column 52, the bottom of the middle column 52 is provided with the bottom longitudinal beam 53, the side surfaces of the top longitudinal beam 51 and the bottom longitudinal beam 53 are connected through the two side structures 54, the inner side of the first layer steel frame 22 on the two sides is provided with the top middle structure 55, the top middle structure 55 is installed between the two top longitudinal beams 51, and the side, away from the two side structures 54, of the top middle structure 55 is provided, and the bottom middle structure 56 is installed between the two bottom longitudinal beams 53 and is arranged below the top middle structure 55.

[0041] The operation process is as follows: firstly, geological exploration is performed, then the first steel pipe pile 41 is arranged, and the ground cover plate 1 is installed on the top of the first steel pipe pile 41. The anchor end 31 is arranged above the ground cover plate 1 by using the reserved hole on the ground cover plate 1. After the above operation is completed, the soil and rock bodies on the two sides are excavated, the first layer steel frame 22 on the two sides is arranged, the anchor head 33 is arranged by passing through the first layer steel frame 22 on the two sides, and the prestress is applied, then the second layer steel frame 21 on the two sides is arranged. After the installation of the second layer steel frame 21 on the two sides is completed, the internal parts of the tunnel structure 5 are built, after the building operation of the internal parts of the tunnel structure 5 is completed, the soil and rock bodies inside the tunnel structure 5 are excavated, the second steel pipe pile 42 is cut off, the first layer steel frame 23 in the middle is arranged, the first layer steel frame 22 on the two sides is cut off, the first layer steel frame 23 in the middle is welded with the first layer steel frame 22 on the two sides, the anchor head 33 is arranged by passing through the first layer steel frame 23 in the middle, and the prestress is applied. After the construction is completed, the second layer steel frame 24 in the middle is arranged, and the construction building operation is completed.

[0042] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A ground pre-set boom underground structure suitable for soft ground, characterized in that, Including ground cover plate (1) and excavation support structure (2), the ground cover plate (1) is located directly above the excavation tunnel, the excavation support structure (2) is provided at the inner wall of the excavation tunnel, Wherein, the ground cover plate (1) and excavation support structure (2) are provided with a derrick system (3), the derrick system (3) is provided with multiple, the lower side of the ground cover plate (1) and the two sides of the excavation support structure (2) are provided with a vertical support system (4), the bottom of the ground cover plate (1) is provided with a tunnel structure (5), Wherein, the tunnel structure (5) and ground cover plate (1) are reinforced by clamping soil body.

2. The ground preset boom underground structure suitable for soft ground according to claim 1, characterized in that: The excavation support structure (2) includes two sides second layer steel frame (21), two sides first layer steel frame (22), intermediate first layer steel frame (23) and intermediate second layer steel frame (24), Wherein, the two sides second layer steel frame (21) is installed in the inside of the vertical support system (4), the inside of the two sides second layer steel frame (21) is installed with two sides first layer steel frame (22), the side of the two sides second layer steel frame (21) is provided with two sides first layer steel frame (22), Wherein, the inside of the two sides first layer steel frame (22) is installed with intermediate second layer steel frame (24), the intermediate second layer steel frame (24) is provided at the side of the two sides second layer steel frame (21).

3. The surface preset boom underground structure suitable for soft ground according to claim 2, characterized in that: The derrick system (3) includes anchor end (31), derrick (32), anchor head (33), Wherein, the bottom of the anchor end (31) is installed with derrick (32), the bottom of the derrick (32) is installed with anchor head (33), the derrick (32) is provided through the ground cover plate (1), the anchor end (31) is installed at the top of the ground cover plate (1), Wherein, the anchor head (33) is installed at the top of the two sides second layer steel frame (21).

4. The surface preset boom underground structure suitable for soft ground according to claim 2, characterized in that: The vertical support system (4) includes first steel pipe pile (41) and second steel pipe pile (42), Wherein, the first steel pipe pile (41) and second steel pipe pile (42) are both installed at the bottom of the ground cover plate (1), the first steel pipe pile (41) is provided at the side of the second steel pipe pile (42), the side of the bottom of the first steel pipe pile (41) and second steel pipe pile (42) is installed with the two sides second layer steel frame (21).

5. The surface preset boom underground structure suitable for soft ground according to claim 3, characterized in that: The tunnel structure (5) includes top longitudinal beam (51), middle column (52), bottom longitudinal beam (53), two sides structure (54), top intermediate structure (55) and bottom intermediate structure (56), Wherein, the top longitudinal beam (51) is installed in the inside of the two sides first layer steel frame (22), the bottom of the top longitudinal beam (51) is installed with middle column (52), the bottom of the middle column (52) is installed with bottom longitudinal beam (53), the side of the top longitudinal beam (51) and bottom longitudinal beam (53) is connected through two sides structure (54), Wherein, the inside of the two sides first layer steel frame (22) is provided with top intermediate structure (55), the top intermediate structure (55) is installed between two top longitudinal beams (51), the side away from the two sides structure (54) of the top intermediate structure (55) is provided, Two bottom longitudinal beams (53) are arranged on the bottom of the frame (50), and the two bottom longitudinal beams (53) are arranged in parallel and are connected to each other. A bottom intermediate structure (56) is arranged between the two bottom longitudinal beams (53), and the bottom intermediate structure (56) is arranged below the top intermediate structure (55).

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