A combined protection system for concrete segment based on freeze method

Abstract

The present invention relates to the field of subway construction, and particularly relates to a combined protection system for concrete segments based on the freezing method, which includes a concrete body and a protection plate. The cross-section of the concrete body is arc-shaped. The protection plate is made of metal, and the shape of the protection plate matches the shape of the concrete body, so that the protection plate can be attached to the inner side wall of the concrete body. A number of connecting bars extending into the interior of the concrete body are provided on the protection plate to fixedly connect the protection plate and the concrete body. Marks can be pre-set on the protection plate to avoid interrupting the main bars of the segments during drilling. Moreover, the door frame can also be temporarily installed on the protection plate made of metal by means of bolts, welding, etc., so as to avoid causing damage to the concrete body and leading to a sharp decline in the performance of the segments.

Description

Technical Field

[0001] The present invention relates to the field of subway construction, and particularly to a combined protection system for concrete segments based on the freezing method. Background Art

[0002] During the construction of subway tunnels, it is often necessary to construct a connecting passage between two adjacent tunnels, which requires drilling holes in the tunnel segments, opening a connecting passage portal, and installing a protective door for the connecting passage. Generally, the connecting passage is constructed by the freezing method, that is, a number of relief holes are drilled in the tunnel segments first, and the freezing pipes are inserted into the formation through the relief holes. Drilling holes in the tunnel segments will inevitably break the main reinforcement bars of the segments, reducing the performance of the segments. Moreover, when installing the door frame of the protective door on the segments, it is necessary to implant steel bars in the segments to fix the door frame, and implanting steel bars will inevitably cause certain damage to the segments. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a combined protection system for concrete segments based on the freezing method to solve the problem of large damage to the current segments during the construction of the connecting passage.

[0004] Based on this, the present invention provides a combined protection system for concrete segments based on the freezing method, including:

[0005] A concrete body with a circular arc cross-section; and

[0006] A protective plate made of a metal material, the protective plate is attached to the inner side wall of the concrete body, and a number of connecting bars extending into the interior of the concrete body are provided on the protective plate.

[0007] Preferably, a number of positioning marks for marking the positions of the main reinforcement bars in the concrete body are provided on the inner side wall of the protective plate.

[0008] Preferably, the door frame of the protective door for the tunnel connecting passage is welded to the protective plate.

[0009] Preferably, a relief notch for accommodating a bolt groove is provided on the protective plate.

[0010] Preferably, the connecting bar includes a first connecting part and two second connecting parts vertically connected to both sides of the first connecting part, so that the connecting bar is U-shaped;

[0011] The first connecting part is fixedly connected to the outer side wall of the protective plate, and the second connecting part extends into the interior of the concrete body.

[0012] Preferably, the thickness of the protective plate is 10 - 14 mm.

[0013] Preferably, it further includes:

[0014] A sealing plate;

[0015] A construction through-hole for freeze method construction is provided on the inner side wall of the protection plate, and the sealing plate covers the construction through-hole and is welded to the protection plate.

[0016] The concrete segment combined protection system based on the freeze method of the present invention includes a concrete body and a protection plate. The cross-section of the concrete body is arc-shaped. The protection plate is made of metal material, and the shape of the protection plate matches the shape of the concrete body, so that the protection plate can be attached to the inner side wall of the concrete body. A number of connecting bars extending into the interior of the concrete body are provided on the protection plate to fixedly connect the protection plate and the concrete body. Marks can be pre-set on the protection plate to avoid breaking the main bars of the segment during drilling. Moreover, the door frame can also be temporarily installed on the protection plate made of metal material by means of bolts, welding, etc., so as to avoid causing damage to the concrete body and resulting in a sharp decline in the performance of the segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional schematic view of the concrete segment combined protection system based on the freeze method of the embodiment of the present invention;

[0018] Figure 2 is a schematic view of the inner side wall of the concrete segment combined protection system based on the freeze method of the embodiment of the present invention;

[0019] Figure 3 is a schematic view of the connecting bar structure of the concrete segment combined protection system based on the freeze method of the embodiment of the present invention.

[0020] Wherein, 1, concrete body; 2, protection plate; 21, connecting bar; 211, first connecting component; 212, second connecting component; 22, relief notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will further describe in detail the specific embodiments of the present invention with reference to the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0022] Combined with Figures 1 to 3 As shown, the concrete segment combined protection system based on the freeze method of the present invention is schematically shown, including a concrete body 1 and a protection plate 2. Among them, the cross-section of the concrete body 1 is arc-shaped, and a number of main bars are arranged vertically and horizontally inside it.

[0023] The protective plate 2 is made of metal material, and existing steel plates can be used, with a thickness of 10-14 mm. Its shape matches that of the concrete body 1. The protective plate 2 is attached to the inner side wall of the concrete body 1, and a number of connecting ribs 21 extending into the interior of the concrete body 1 are provided on the protective plate 2. Of course, the outer side walls of the connecting ribs 21 and the protective plate 2 are embedded in the concrete body 1, thereby fixedly connecting the protective plate 2 to the concrete body 1.

[0024] Marks can be preset on the protective plate 2 to avoid interrupting the main reinforcement bars of the segment during drilling. Moreover, the door frame can also be temporarily installed on the protective plate 2 made of metal material by means such as bolts and welding, so as to avoid causing damage to the concrete body 1 and resulting in a sharp decline in the performance of the segment.

[0025] In this embodiment, a number of positioning markings for marking the positions of the main reinforcement bars in the concrete body 1 are provided on the inner side wall of the protective plate 2, which can maximally avoid the construction personnel interrupting the main reinforcement bars in the concrete body 1 during drilling.

[0026] The door frame of the protective door of the tunnel connection passage is welded to the protective plate 2. In this way, it is not necessary to implant reinforcement bars in the concrete body 1 to fix the door frame, which improves the safety of the door frame installation and can also avoid damaging the segment (concrete body 1).

[0027] Furthermore, as Figure 2 , a number of relief notches 22 are provided on the protective plate 2 to make way for the bolt grooves. The relief notches 22 facilitate the construction personnel to operate or repair the bolts in the bolt grooves.

[0028] As Figure 3 , the connecting rib 21 includes a first connecting component 211 and two second connecting components 212 vertically connected to both sides of the first connecting component 211, making the connecting rib 21 in a U shape. The first connecting component 211 is fixedly connected to the outer side wall of the protective plate 2, and the second connecting component 212 extends into the interior of the concrete body 1.

[0029] The concrete segment combined protection system based on the freezing method of the present invention further includes a sealing plate. Construction through holes for freezing method construction are provided on the inner side wall of the protective plate 2, and the sealing plate covers the construction through holes and is welded to the protective plate 2.

[0030] In summary, the concrete segment combined protection system based on the freezing method of the present invention includes a concrete body 1 and a protection plate 2. The cross-section of the concrete body 1 is circular arc-shaped. The protection plate 2 is made of metal material, and the shape of the protection plate 2 matches the shape of the concrete body 1, so that the protection plate 2 can be attached to the inner side wall of the concrete body 1. A number of connecting bars 21 extending into the interior of the concrete body 1 are provided on the protection plate 2 to fixedly connect the protection plate 2 and the concrete body 1. Marks can be preset on the protection plate 2 to avoid interrupting the main bars of the segment during drilling, and the door frame can also be temporarily installed on the protection plate 2 made of metal material by means of bolts, welding, etc., so as to avoid causing damage to the concrete body 1 and resulting in a sharp decline in the performance of the segment.

[0031] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A combined protection system for concrete segment based on freezing method, characterized in that, include: A concrete body having a circular arc cross section; and A protective plate is made of metal material, the protective plate is attached to the inner wall of the concrete body, and the protective plate is provided with a plurality of connecting ribs extending into the interior of the concrete body; The door frame of the protective door of the tunnel communication passage is welded to the protective plate; The connecting rib comprises a first connecting member and two second connecting members vertically connected to both sides of the first connecting member, so that the connecting rib is U-shaped; The first connecting component is fixedly connected to the outer side wall of the protective plate, and the second connecting component extends to the interior of the concrete body.

2. The combined protection system for concrete segment based on the freezing method according to claim 1, wherein, A plurality of positioning marking lines for marking the positions of the main reinforcements in the concrete body are arranged on the inner side wall of the protection plate.

3. The concrete segment combined protection system based on the freezing method according to claim 1, wherein The protective plate is provided with a notch for accommodating the bolt groove.

4. The concrete segment combined protection system based on the freezing method according to claim 1, wherein, The thickness of the protective plate is 10-14 mm.

5. The combined protection system for concrete segments based on the freezing method according to claim 1, wherein Also includes: Sealing plate; A construction through hole for freezing construction is opened on the inner wall of the protective plate, and the sealing plate is covered in the construction through hole and is welded to the protective plate.

Images