A prefabricated thermal insulation component for tunnel side ditch in cold regions

Abstract

The present invention discloses a prefabricated thermal insulation component for cold-region tunnel side ditches, including a prefabricated thermal insulation board and a prefabricated thermal insulation cover board, wherein the prefabricated thermal insulation board includes a plurality of thermal insulation single plates with U-shaped cross sections, wherein the thermal insulation single plates are composed of a protection frame and a thermal insulation inner core, wherein the protection frame is wrapped around the inner and outer surfaces of the thermal insulation inner core, and adjacent thermal insulation single plates are connected by a frame connector, and after all the thermal insulation single plates are connected in series in sequence, the outer ends of the first and last thermal insulation single plates are sealed by the frame end cover; the side walls of some of the thermal insulation single plates are provided with perforations for connecting to tunnel drainage pipes, and sealing members are provided in the perforations. The thermal insulation component can insulate the tunnel side ditches in all directions on all sides, and has a good thermal insulation effect while ensuring smooth drainage; in addition, the thermal insulation component also has the advantages of high strength, good durability, and convenient construction and assembly, and is very suitable for cold-region tunnels.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel side ditch insulation, and in particular to a prefabricated insulation component for a tunnel side ditch in a cold region. Background Art

[0002] The side ditches of tunnels are generally exposed to the air. Although they are designed with thermal insulation covers, their thermal insulation effect is poor and they cannot form a closed surround thermal insulation space. Therefore, the drainage section near the tunnel entrance is very easy to freeze, causing water to overflow the side ditches and penetrate into the track surface to freeze, endangering driving safety. Summary of the invention

[0003] The object of the present invention is to provide a prefabricated thermal insulation component for a tunnel side ditch in cold regions, which effectively solves the problem of poor thermal insulation effect of the tunnel side ditch.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A prefabricated thermal insulation component for a tunnel ditch in a cold region, comprising a prefabricated thermal insulation board and a prefabricated thermal insulation cover board, wherein the prefabricated thermal insulation board comprises a plurality of thermal insulation veneers with a U-shaped cross section, wherein the thermal insulation veneer comprises a protective frame and a thermal insulation inner core, wherein the protective frame is wrapped around the inner and outer surfaces of the thermal insulation inner core, wherein adjacent thermal insulation veneers are connected by a frame connector, and after all the thermal insulation veneers are sequentially connected in series, the outer ends of the first and last thermal insulation veneers are sealed by a frame end cover;

[0006] The side walls of some of the thermal insulation single plates are provided with through holes for connecting to the tunnel drainage pipe, and sealing members are arranged in the through holes.

[0007] A further improvement is that the protection frame is composed of an internal shell and an external shell, and the internal shell and the external shell are assembled and fixed by male and female clamping grooves.

[0008] A further improvement is that slots for protecting the frame plug-in are formed on both side surfaces of the frame connector and one side surface of the frame end cover.

[0009] A further improvement is that the thermal insulation core is made of vacuum insulation material or polyurethane material.

[0010] A further improvement is that the protection frame is made of polyethylene, polyvinyl chloride or polypropylene.

[0011] A further improvement is that the sealing member is a saddle-shaped sealing member, and the sealing member is bonded to the side wall of the thermal insulation single board by means of a structural adhesive.

[0012] The beneficial effects of the present invention are as follows: the thermal insulation component can provide all-round thermal insulation for the tunnel side ditch on all four sides, achieving a good thermal insulation effect while ensuring smooth drainage; in addition, the thermal insulation component also has the advantages of high strength, good durability, and convenient construction and assembly, and is very suitable for tunnels in cold regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of a prefabricated insulation board and a prefabricated insulation cover board;

[0014] Figure 2 It is a schematic diagram of the structure of the protection frame;

[0015] Figure 3 is a structural schematic diagram of a frame connector;

[0016] Figure 4 for Figure 3 Middle BB section;

[0017] Figure 5 It is a structural schematic diagram of the frame end cover;

[0018] Figure 6 for Figure 5 Middle CC section;

[0019] Figure 7 This is a schematic diagram of the thermal insulation single board structure connected to the tunnel drainage pipe;

[0020] Figure 8 This is a schematic diagram of the installation of prefabricated insulation panels during construction;

[0021] In the figure: 1. Prefabricated insulation board; 11. Protection frame; 12. Insulation core; 13. Frame connector; 14. Frame end cover; 15. Perforation; 16. Seal; 17. Slot; 18. Structural adhesive; 2. Prefabricated insulation cover plate; 3. Side ditch template. DETAILED DESCRIPTION

[0022] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Combination Figures 1 to 7As shown, a prefabricated thermal insulation component for a tunnel ditch in a cold region comprises a prefabricated thermal insulation board 1 and a prefabricated thermal insulation cover board 2. The prefabricated thermal insulation board 1 comprises a plurality of thermal insulation veneers with a U-shaped cross section. The thermal insulation veneer consists of a protective frame 11 and a thermal insulation inner core 12. The protective frame 11 is wrapped around the inner and outer surfaces of the thermal insulation inner core 12 (the two ends do not need to be wrapped) to play a supporting and protective role. Adjacent thermal insulation veneers are connected by a frame connector 13, and no gap is left during installation to ensure smooth drainage and thermal insulation effect. After all the thermal insulation veneers are connected in series in sequence, the outer ends of the first and last thermal insulation veneers are sealed by the frame end covers 14 to protect the internal thermal insulation material. The prefabricated thermal insulation cover board 2 consists of an upper reinforcement layer and a lower thermal insulation layer, and its thermal insulation layer is also composed of a protective frame 11 and a thermal insulation inner core 12.

[0024] The side wall of some of the insulation single boards is provided with a perforation 15 for connecting the tunnel drainage pipe, and a sealing member 16 is provided in the perforation 15. The product can be customized in size according to demand, so as to facilitate the opening of a hole to connect the arch foot drainage hole.

[0025] The protection frame 11 is composed of an inner shell and an outer shell, and the inner shell and the outer shell are assembled and fixed by male and female clamping grooves.

[0026] Slots 17 for inserting the protection frame 11 are formed on both side surfaces of the frame connector 13 and one side surface of the frame end cover 14 .

[0027] The heat-insulating inner core 12 is made of vacuum heat-insulating material or polyurethane material, and other heat-insulating materials may also be used.

[0028] The protection frame 11 is made of polyethylene, polyvinyl chloride, polypropylene, and other materials may also be used. The protection frame 11 has alkali resistance and low temperature resistance while ensuring strength.

[0029] The sealing member 16 is a saddle-shaped sealing member, and the sealing member 16 is bonded to the side wall of the thermal insulation single board by means of a structural adhesive 18 .

[0030] Recombination Figure 8 As shown, during construction, the U-shaped prefabricated insulation board 1 can be pre-installed on the outside of the side ditch steel formwork, and products with perforations 15 are selected and arranged at the outlet of the drainage hole. The saddle-shaped seal 16 is used to connect and fix the drainage pipe, which can not only ensure the airtightness of the insulation, but also prevent the displacement of the drainage hole during the construction process. Then build the side ditch formwork 3 and pour it. After the concrete pouring of the lower part of the side ditch is completed, demoulding is performed, leaving a prefabricated side ditch surface with the same size as the side ditch inside the hole to ensure smooth water flow. After the side ditch is completed, a prefabricated insulation cover plate 2 is installed on the upper part to form an all-round closed insulation space on all four sides to ensure the insulation effect.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A prefabricated thermal insulation component for a tunnel ditch in a cold region, comprising a prefabricated thermal insulation board (1) and a prefabricated thermal insulation cover board (2), characterized in that: The prefabricated thermal insulation board (1) comprises a plurality of thermal insulation single boards with a U-shaped cross section, the thermal insulation single boards comprising a protection frame (11) and a thermal insulation inner core (12), the protection frame (11) wraps around the inner and outer surfaces of the thermal insulation inner core (12), adjacent thermal insulation single boards are connected via a frame connector (13), and all the thermal insulation single boards are sequentially connected in series, and the outer ends of the first and last thermal insulation single boards are sealed via a frame end cover (14); The side walls of some of the thermal insulation boards are provided with through holes (15) for connecting to the tunnel drainage pipe, and a sealing member (16) is provided in the through holes (15); The protection frame (11) is composed of an inner shell and an outer shell, and the inner shell and the outer shell are assembled and fixed by means of male and female slots, and both side surfaces of the frame connector (13) and one side surface of the frame end cover (14) are formed with slots (17) for plugging the protection frame (11); The prefabricated insulation board (1) is arranged in a U shape and installed outside the side ditch steel formwork, and the perforations (15) and the water outlet of the drainage hole are aligned, and the drainage pipe is connected and fixed via the sealing member (16). After the side ditch formwork (3) is built inside the prefabricated insulation board (1), concrete is poured at the lower part of the side ditch.

2. The prefabricated thermal insulation component for the side ditch of a cold region tunnel according to claim 1, characterized in that: The heat-insulating inner core (12) is made of vacuum heat-insulating material or polyurethane material.

3. The prefabricated thermal insulation component for the side ditch of a cold region tunnel according to claim 1, characterized in that: The protection frame (11) is made of polyethylene, polyvinyl chloride or polypropylene.

4. The prefabricated thermal insulation component for the side ditch of a cold region tunnel according to claim 1, characterized in that: The sealing member (16) is a saddle-shaped sealing member, and the sealing member (16) is bonded to the side wall of the thermal insulation single board by means of a structural adhesive (18).

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