CN219081601U

CN219081601U - Primary support structure organically combined with hole support pile

Info

Publication number: CN219081601U
Application number: CN202320021018.4U
Authority: CN
Inventors: 姜夕伟; 冯际安; 邓蕾蕾; 谢建鹤; 刘波; 郭高洁; 苏广瑞; 谢寓龑; 穆忠强; 刘亮; 熊柏林
Original assignee: Southwest Municipal Engineering Design and Research Institute of China
Current assignee: Southwest Municipal Engineering Design and Research Institute of China
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-26
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses an initial supporting structure organically combined with a supporting pile at a hole, which comprises supporting piles arranged at two sides of the hole and an initial supporting structure connected with the supporting piles, wherein the initial supporting structure comprises a concrete layer, grouting anchor rods are uniformly distributed in the concrete layer, and supporting parts connected with the supporting piles are arranged on the concrete layer. The utility model has the beneficial effects that: the support piles at the tunnel portal can be organically combined with the primary support in the tunnel.

Description

Primary support structure organically combined with hole support pile

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to an initial support structure organically combined with a tunnel portal support pile.

Background

When the tunnel is excavated, surrounding rock support is generally divided into primary support and secondary lining, and the secondary lining is generally a concrete or reinforced concrete structure. After the tunnel is excavated, in order to control the appropriate release and deformation of surrounding rock stress, the structural safety is improved, the construction is convenient, and the support form which is carried out immediately after the tunnel is excavated is called primary support.

The tunnel is generally excavated on a side slope and a foundation pit. In order to bear the transverse thrust of the side slope and the foundation pit, corresponding supporting piles are generally required to be arranged for reinforcement and protection.

If the support piles at the tunnel portal can be organically combined with the primary support in the tunnel, the support strength of the primary support can be effectively improved.

Therefore, it is necessary to provide an early support structure organically combined with a tunnel portal support pile, which can organically combine the support pile at the tunnel portal with the early support in the tunnel.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an initial support structure organically combined with a tunnel portal support pile, which can organically combine the support pile at the tunnel portal with the initial support in the tunnel.

The aim of the utility model is realized by the following technical scheme: the utility model provides an organic initial stage supporting structure who combines with entrance to a cave supporting pile, including setting up in the supporting pile of entrance to a cave both sides and the initial stage supporting structure who links to each other with the supporting pile, initial stage supporting structure includes concrete layer, evenly distributed in the concrete layer grouting anchor, be provided with the supporting part who links to each other with the supporting pile on the concrete layer.

The support part comprises a reinforcing mesh paved on a concrete layer and an I-steel support frame erected on the concrete layer, and the I-steel support frame is connected with the support pile.

The I-steel support frame comprises a plurality of I-steels which are uniformly spaced, wherein the I-steels are arranged on a connecting steel plate, the connecting steel plate is arranged on a concrete layer, and the I-steels are connected with adjacent I-steels through connecting ribs.

And the connecting ribs are welded with the I-steel.

And a plurality of bolt holes are formed in the connecting steel plate.

The I-steel is welded on the connecting steel plate.

The beneficial effects of the utility model are as follows: the supporting piles at the hole are organically combined with the primary supporting piles, the hole supporting piles can provide a certain degree of support for the primary supporting, the supporting strength of the primary supporting is improved, and accordingly corresponding cost can be saved under the same supporting strength.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the distribution of grouting anchors;

FIG. 3 is a schematic view of a I-steel support frame;

FIG. 4 is a view at FIG. 3A;

FIG. 5 is a view at FIG. 3B;

FIG. 6 is a view at FIG. 3C;

FIG. 7 is a bottom view of FIG. 3A;

FIG. 8 is a bottom view of FIG. 3B;

FIG. 9 is a bottom view of FIG. 3C;

FIG. 10 is a schematic diagram of a connection of the connecting ribs;

in the figure, 1-supporting piles, 2-primary supporting structures, 3-concrete layers, 4-grouting anchor rods, 5-supporting parts, 6-I-steel supporting frames, 7-I-steel, 8-connecting steel plates, 9-connecting ribs and 10-bolt holes.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

In the following description, the terms "left", "right", "upper", "lower", "front", "rear", "inner" and "outer" are relative terms, and are not intended to be exhaustive.

Referring to fig. 1, the primary support structure organically combined with the tunnel portal support piles comprises support piles 1 arranged on two sides of a tunnel portal and primary support structures 2 arranged on the inner wall of the tunnel. The primary support structure 2 comprises a concrete layer 3 arranged on the inner wall of the tunnel.

Grouting anchor rods 4 are uniformly inserted on the concrete layer 3 along the longitudinal axis direction of the tunnel. The grouting anchors 4 are distributed as shown in fig. 2. The horizontal spacing between the front, back, left and right of the adjacent grouting anchor rods 4 is 100 cm.

The concrete layer 3 is provided with a support member 5 connected to the support pile 1. The support member 5 comprises a reinforcing mesh laid on the surface of the concrete layer 3 and a plurality of uniformly spaced i-beam support frames 6 as shown in fig. 3.

Referring to fig. 4 to 9, the i-steel support frame 6 includes a connection steel plate 8. A part of the connecting steel plate 8 is embedded in the support pile 1. The connecting steel plate 8 is provided with a plurality of bolt holes 10, and bolts are mounted on the bolt holes 10 so as to be fixed on the concrete layer 3. I-steel 7 is welded on the connecting steel plate 8. Because the tunnel is arc setting, I-steel 7 and the connecting steel plate 8 shape, the setting angle etc. on the different tunnel arc sections are all different. The dimensions of the connecting steel plates 8 at A are 260mm, 260mm and 14mm, the dimensions of the connecting steel plates at B are 450mm, 260mm and 14mm, and the dimensions of the connecting steel plates at C are 840mm, 260mm and 14mm.

Referring to fig. 10, a connecting rib 9 is provided between adjacent i-bars 7. And two ends of the connecting rib 9 are respectively welded with the I-steel 7. The I-steel 7 is also connected with the support pile 1.

The primary support structure 2 and the support piles 1 are organically combined, and the support piles 1 can give a certain support to the primary support structure 2, so that the support strength of the primary support is improved, and the corresponding cost can be saved under the same support strength.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. The utility model provides an organic initial stage supporting structure who combines with entrance to a cave supporting pile, its characterized in that, including setting up in supporting pile (1) of entrance to a cave both sides and with supporting pile (1) continuous initial stage supporting structure (2), initial stage supporting structure (2) include concrete layer (3), evenly distributed grouting anchor (4) in concrete layer (3), be provided with on concrete layer (3) with supporting pile (1) continuous supporting part (5).

2. An primary support structure in organic combination with a hole support pile according to claim 1, wherein: the supporting component (5) comprises a reinforcing mesh paved on a concrete layer and an I-steel supporting frame (6) erected on the concrete layer, and the I-steel supporting frame (6) is connected with the supporting pile (1).

3. An primary support structure in organic combination with a hole support pile according to claim 2, wherein: the I-steel support frame (6) comprises a plurality of I-steels (7) which are uniformly spaced, the I-steels (7) are arranged on a connecting steel plate (8), the connecting steel plate (8) is arranged on a concrete layer (3), and the I-steels (7) are connected with adjacent I-steels (7) through connecting ribs (9).

4. A primary support structure in combination with an opening support pile as claimed in claim 3, wherein: the connecting ribs (9) are welded with the I-steel (7).

5. A primary support structure in combination with an opening support pile as claimed in claim 3, wherein: a plurality of bolt holes (10) are formed in the connecting steel plate (8).

6. A primary support structure in combination with an opening support pile as claimed in claim 3, wherein: the I-steel (7) is welded on the connecting steel plate (8).