An assembled multiple smoke-proof partition wall suitable for a tunnel

Abstract

The application belongs to the technical field of tunnel engineering internal structure, and provides an assembled multiple smoke-proof partition wall suitable for tunnels, which comprises a partition wall body, the right end of the partition wall body is a lap joint, and the left end is a receiving joint; a lap joint embedded steel plate is embedded in the lap joint, and a first caulking is arranged on the front side of the lap joint; a receiving joint embedded steel plate is embedded in the receiving joint, a giving-way groove matched with the lap joint embedded steel plate is arranged on the back side of the receiving joint, and a second caulking is arranged on the front side of the receiving joint; the lap joint embedded steel plate of the left partition wall body is embedded in the giving-way groove of the right partition wall body; the first caulking of the left partition wall body and the second caulking of the right partition wall body jointly form a caulking groove, and fireproof sealing glue is filled in the caulking groove. In the partition wall, the fireproof sealing glue, the welding seam and the like can form a multiple smoke-proof system, effectively solve the problem of air leakage and smoke leakage at the joint of the partition wall, and improve the smoke-proof performance and construction quality of the vertical joint of the partition wall.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of internal structure of tunnel engineering, and particularly relates to an assembled multiple smoke-proof partition wall suitable for a tunnel. BACKGROUND

[0002] In order to improve the utilization rate of the internal space of the tunnel, the internal space of the tunnel is generally divided into multiple independent spaces by a partition wall, and the functions of different spaces are generally different. According to the relevant building fireproofing requirements in China, the partition wall separating different spaces needs to realize the functions of fireproofing and smoke-proofing, but the implementation of the partition wall in the tunnel is still mainly cast-in-place at present, and the functions of fireproofing and smoke-proofing are poor.

[0003] At present, China is vigorously developing green construction technology, and a large number of tunnel outer wall structures have gradually realized full prefabrication and assembly, achieving a high prefabrication and assembly rate, but the prefabrication and assembly rate of the internal structure which is also the main structure is relatively low, which is a difficulty in the application of the assembled structure technology.

[0004] The partition wall, as the main means of dividing the internal structure space, has attracted the attention of many engineering personnel, and some technical schemes of the assembled structure have been successively proposed.

[0005] For example, Chinese patents CN 110230502 A / CN 211949054 U / CN 112682075 A / CN 214464397 U / CN 214741339 U / CN 113898010 A / CN 217481283 U, etc. all propose improvement schemes for the connection structure of the assembled partition wall, mainly focusing on the treatment of the connection joint of the top and bottom of the partition wall with the tunnel outer wall, which can solve the adverse effects of the deformation before the installation of the tunnel partition wall and the deformation in the later operation period on the connection joint. However, the above improvement schemes all focus on the treatment of the horizontal joint of the partition wall, and ignore the treatment of the vertical joint.

[0006] In actual engineering, the vertical joint is prone to loosening and separation due to the large number thereof, and for tunnels with high smoke-proofing requirements, loosening may lead to serious air leakage of the vertical joint in the case of fire and failure of smoke-proofing. Obviously, the existing technology does not provide a better solution to this problem. SUMMARY

[0007] In view of the deficiencies in the prior art, the present application provides an assembled multiple smoke-proof partition wall suitable for a tunnel, wherein the fireproofing sealing glue, welding seam, etc. can form multiple smoke-proof systems, effectively solving the problem of easy air and smoke leakage at the joint of the partition wall, and improving the smoke-proof performance and construction quality of the prefabricated partition wall vertical joint.

[0008] In order to achieve the above object, the application adopts the following technical scheme: A kind of assembled multiple smoke-proof partition wall suitable for tunnel, including at least two partition wall main bodies fixedly connected in order from left to right, the right end of the partition wall main body is lap joint, the left end of the partition wall main body is receiving joint;

[0009] The lap joint is embedded with lap joint embedded steel plate, the rear side of the lap joint embedded steel plate is flush with the rear side of the lap joint, the right end of the lap joint embedded steel plate extends out of the right end surface of the lap joint, and the front side of the lap joint is provided with a first caulking;

[0010] The receiving joint is embedded with receiving joint embedded steel plate, the rear side of the receiving joint embedded steel plate is flush with the rear side of the lap joint embedded steel plate, the rear side of the receiving joint embedded steel plate is flush with the rear side of the lap joint embedded steel plate, and the front side of the receiving joint is provided with a second caulking;

[0011] The lap joint embedded steel plate of the left partition wall main body is embedded in the receiving slot of the right partition wall main body, so that the rear side of the receiving joint embedded steel plate of the right partition wall main body is flush with the front side of the lap joint embedded steel plate of the left partition wall main body and is fixed by welding.

[0012] The first caulking of the left partition wall main body and the second caulking of the right partition wall main body jointly form a caulking slot, and the caulking slot is filled with fireproof sealant.

[0013] Preferably, the partition wall main body is provided with a rear grouting pipe for sealing grouting, one end of the rear grouting pipe extends to the right end surface of the lap joint, and the other end of the rear grouting pipe extends to the rear side of the lap joint.

[0014] Preferably, a plurality of rear grouting pipes are uniformly and vertically distributed in the partition wall main body.

[0015] Preferably, a cushion layer is provided between the right end surface of the left partition wall main body and the left end surface of the right partition wall main body.

[0016] Preferably, the cushion layer is a softwood board.

[0017] Preferably, the front and rear sides of the partition wall main body are coated with fireproof paint.

[0018] Preferably, an anchoring steel bar is embedded in the partition wall main body, the lap joint embedded steel plate is welded to the anchoring steel bar, and the receiving joint embedded steel plate is welded to the anchoring steel bar.

[0019] Preferably, the lap joint embedded steel plate has the same height as the partition wall main body, and the receiving joint embedded steel plate has the same height as the partition wall main body.

[0020] Compared with the prior art, the application has the beneficial effects that:

[0021] 1. The assembled multiple fireproof partition wall suitable for tunnels can effectively solve the problem of smoke leakage at the joint of the partition wall, and improve the smoke-proof performance and construction quality of the prefabricated partition wall vertical joint.

[0022] 2. The assembled multiple fireproof partition wall suitable for tunnels can further improve the smoke-proof performance of the partition wall vertical joint through the post-grouting pipe between the adjacent partition wall bodies.

[0023] 3. The assembled multiple fireproof partition wall suitable for tunnels can further improve the fireproof and smoke-proof performance of the partition wall vertical joint through the fireproof paint.

[0024] 4. The assembled multiple fireproof partition wall suitable for tunnels is convenient to install, and the joint treatment of the partition wall vertical joint and the assembly treatment of the partition wall body can be performed synchronously, so that the construction process is more green, low-carbon, safe and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The top view structural schematic diagram of the assembled multiple fireproof partition wall suitable for tunnels is provided for the embodiments of the application.

[0026] Figure 2 The structural schematic diagram of the connection between the adjacent two partition wall bodies of the assembled multiple fireproof partition wall suitable for tunnels is provided for the embodiments of the application.

[0027] Figure 3 The front view structural schematic diagram of the rear side of the assembled multiple fireproof partition wall suitable for tunnels is provided for the embodiments of the application.

[0028] In the drawings, the component list represented by each number is as follows:

[0029] 1, lap joint; 2, receiving joint; 3, lap joint embedded steel plate; 4, receiving joint embedded steel plate; 5, weld; 6, anchoring steel bar; 7, post-grouting pipe; 8, cushion layer; 9, caulking groove; 14, right end face; 15, fireproof paint; 16, first caulking; 17, second caulking; 10, tunnel top plate; 11, tunnel bottom plate; 12, post-poured gap. DETAILED DESCRIPTION

[0030] The application will be further described in detail below in combination with specific embodiments, so that those skilled in the art can more clearly understand the application.

[0031] It should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or one-piece structure. For ordinary skilled in the art, the specific meaning of such terms in this patent can be understood according to the specific circumstances.

[0032] As shown in Figures 1-2 The embodiment provides an assembled multiple smoke-proof partition wall suitable for tunnel, which comprises two partition wall bodies fixedly connected in sequence from left to right, the right end of the partition wall body is a lap joint 1, and the left end of the partition wall body is a receiving joint 2.

[0033] The lap joint 1 is provided with a lap joint embedded steel plate 3, the rear side of the lap joint embedded steel plate 3 is flush with the rear side of the lap joint 1, the right end of the lap joint embedded steel plate 3 extends out of the right end surface 14 of the lap joint 1, and the front side of the lap joint 1 is provided with a first caulking 16.

[0034] The receiving joint 2 is provided with a receiving slot matched with the lap joint embedded steel plate 3, and the rear side of the receiving joint embedded steel plate 4 is exposed in the receiving slot.

[0035] The lap joint embedded steel plate 3 of the left partition wall body is embedded in the receiving slot of the right partition wall body, so that the rear side of the receiving joint embedded steel plate 4 of the right partition wall body is attached to the front side of the lap joint embedded steel plate 3 of the left partition wall body and is welded and fixed through a weld 5.

[0036] The first caulking 16 of the left partition wall body and the second caulking 17 of the right partition wall body jointly form a caulking slot 9, and the caulking slot 9 is filled with fireproof sealant.

[0037] In the embodiment, the partition wall body can be a reinforced concrete structure, and the lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4 are embedded in the partition wall body.

[0038] The rear side of the lap joint embedded steel plate 3 is flush with the rear side of the lap joint 1, that is, the rear side of the lap joint embedded steel plate 3 is exposed, and the right end of the lap joint embedded steel plate 3 extends out of the right end surface 14 of the lap joint 1, that is, the right part of the lap joint embedded steel plate 3 is exposed.

[0039] Meanwhile, the rear side of the receiving joint 2 is provided with a receiving slot matched with the lap joint embedded steel plate 3, and the rear side of the receiving joint embedded steel plate 4 is exposed in the receiving slot, that is, the rear side of the receiving joint embedded steel plate 4 is exposed.

[0040] When the left and right two adjacent partition wall bodies are assembled, the lap joint embedded steel plate 3 can be embedded into the gap slot, and the rear side of the receiving joint embedded steel plate 4 of the right partition wall body is attached to the front side of the lap joint embedded steel plate 3 of the left partition wall body. At this time, as shown in Figure 2 the right end part of the receiving joint embedded steel plate 4 is still exposed, that is, there is still a part of the gap in the gap slot, which provides a certain space for welding the weld 5 to seal the gap between the lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4, that is, to fix the lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4. At the same time, the first caulking 16 of the left partition wall body is aligned with the second caulking 17 of the right partition wall body, and together forms the caulking slot 9, and then the caulking slot 9 is filled with fireproof sealant, so that the vertical seam of the front side of the adjacent two partition wall bodies is sealed, and the fireproof sealant and the weld 5 can both play a smoke-proof function, thereby achieving the purpose of multiple smoke-proofing, effectively solving the problem of air leakage and smoke leakage at the joint of the partition wall, and improving the smoke-proof performance and construction quality of the prefabricated partition wall vertical seam.

[0041] The cooperation of the lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4 not only improves the assembly efficiency and enables the adjacent two partition wall bodies to be quickly aligned, but also improves the assembly precision and reduces the vertical seam between the adjacent two partition wall bodies.

[0042] The lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4 have the same height as the partition wall body, so that the lap joint embedded steel plate 3 and the receiving joint embedded steel plate 4 can cover the entire vertical seam and convert the vertical seam of the adjacent partition wall body into a gap between the two steel plates, which has a smaller gap and better smoke-proof effect.

[0043] In this embodiment, the partition wall body is provided with a rear grouting pipe 7 for sealing grouting, one end of the rear grouting pipe 7 extends to the right end face 14 of the lap joint 1, and the other end of the rear grouting pipe 7 extends to the rear side of the lap joint 1.

[0044] After the adjacent two partition wall bodies are assembled, the rear grouting pipe 7 can be used to inject sealing slurry into the vertical seam between the adjacent two partition wall bodies. The sealing slurry can be fast-hardening ultra-fine cement slurry, which has good smoke-proof function and effectively avoids smoke dispersion.

[0045] To ensure the grouting effect, a plurality of rear grouting pipes 7 are uniformly and vertically distributed in the partition wall body. The plurality of rear grouting pipes 7 can realize uniform grouting in the vertical seam between the adjacent two partition wall bodies, so that the entire vertical seam is filled with sealing slurry, avoiding gaps or leaks.

[0046] In this embodiment, a padding layer 8 is provided between the right end face 14 of the left partition wall body and the left end face of the right partition wall body. When assembling two adjacent partition wall bodies, the padding layer 8 can act as a buffer to avoid rigid collisions.

[0047] The padding layer 8 can be a cork board. After assembly, the cork board 8 is compacted and also has a certain smoke-proof function.

[0048] In this embodiment, the front and rear sides of the partition wall are coated with fire-retardant paint 15. After assembling two adjacent partition wall sections, the fire-retardant paint 15 is applied to the front and rear sides of the completed partition wall section to further improve the fire and smoke resistance of the partition wall.

[0049] It should be noted that the fire-retardant coating 15 should be applied evenly and continuously to the entire side of the partition wall. That is, the rear side of the embedded steel plate 3 at the lap joint and the empty part of the clearance groove should both be coated with the fire-retardant coating 15.

[0050] In this embodiment, the partition wall body is pre-embedded with anchoring steel bars 6, the lap joint pre-embedded steel plate 3 is welded and fixed to the anchoring steel bars 6, and the bearing joint pre-embedded steel plate 4 is welded and fixed to the anchoring steel bars 6.

[0051] The stability of the lap joint embedded steel plate 3 and the bearing joint embedded steel plate 4 can be improved by the anchoring steel bar 6.

[0052] The partition wall body may also be pre-embedded with a steel mesh, and the anchoring steel bar 6 can be welded and fixed to the steel mesh to further improve the stability of the lap joint pre-embedded steel plate 3 and the bearing joint pre-embedded steel plate 4.

[0053] like Figure 3 As shown, for ease of installation, the height of the prefabricated partition wall is generally less than the height between the tunnel floor slab 11 and the tunnel roof slab 10. Before installation, the tunnel floor slab 11 is leveled to meet the assembly requirements, and then the partition wall is placed in the designed position. Since the height of the partition wall is less than the height between the tunnel floor slab 11 and the tunnel roof slab 10, a post-cast gap 12 will be left between the top of the partition wall and the tunnel roof slab 10. This gap can be directly filled with reinforced concrete or sealed with other existing technologies to achieve a seamless connection with the tunnel structure.

[0054] In summary, this embodiment provides a prefabricated multi-layer smoke barrier suitable for tunnels. The specific installation process of this barrier can include the following steps:

[0055] 1) Level the tunnel floor slab 11 to meet the requirements for partition wall installation;

[0056] 2) After accurate positioning, place the first block of partition body, and use temporary measures to ensure its stability;

[0057] 3) Place the second block of partition body, and make its receiving joint 2 face the overlapping joint 1 of the first block of partition body, and gradually push it in, compress the cork board 8, and make the receiving joint 2 of the second block of partition body completely adhere to the overlapping joint 1 of the first block of partition body;

[0058] 4) Weld the overlapping joint embedded steel plate 3 and the receiving joint embedded steel plate 4 with the weld 5 firmly, and ensure the air tightness, and at the same time, on the other side of the partition body, use fireproof sealant to fill the embedded joint groove 9 tightly;

[0059] 5) Then, through the post-grouting pipe 7, inject the ultra-fine cement slurry or cement mortar, so that it flows into the assembly gap of the overlapping joint 1 and the receiving joint 2; in order to ensure full grouting, the slurry should be injected from the last row of post-grouting pipes 7, and the post-grouting pipes 7 in the upper rows serve as exhaust holes and observation holes;

[0060] 6) As the slurry is gradually injected, the slurry will flow out of the post-grouting pipes 7 in the upper rows in turn, when the slurry flows out of a post-grouting pipe 7 in the upper rows, immediately block the post-grouting pipe 7 with a stop plug or other measures, until the whole wall is filled with the slurry, and the slurry overflows from the top, and the grouting is completed;

[0061] Among them, the weld 5, the embedded joint groove 9 and the post-grouting pipe 7 can be continuously constructed, or can be constructed in a flowing manner, and there is basically no waiting and interval time between the construction processes;

[0062] In order to facilitate installation, the height of the partition body is less than the height of the tunnel floor 11 to the tunnel ceiling 10, so that a post-pouring gap 12 will be left between the top end of the partition body and the tunnel ceiling 10;

[0063] 7) After the above operation cycle is constructed, a formwork is erected, and the post-pouring gap 12 is filled with fine stone concrete, or the connection between the partition body and the tunnel structure is realized by using other existing technologies;

[0064] 8) The partition body assembly construction is completed;

[0065] 9) The fireproof paint 15 is applied on the front and rear sides of the partition in an integrated manner, so that the overall fireproof and smokeproof performance of the partition is further improved.

[0066] In the present application, the mechanisms, components and parts not described in the specific structure are all existing structures in the prior art, which can be directly purchased from the market.

[0067] In the description of the application, it is to be understood that the terms "upper", "lower", "left", "right", and the like refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, cannot be understood as a limitation on the application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0068] The above is only the preferred embodiment of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A prefabricated multi-layer smoke barrier suitable for tunnels, characterized in that, It includes at least two partition wall main bodies that are fixedly connected from left to right, the right end of the partition wall main body is an overlapping joint (1), and the left end of the partition wall main body is a receiving joint (2); The overlapping joint (1) is pre-embedded with an overlapping joint pre-embedded steel plate (3). The rear side of the overlapping joint pre-embedded steel plate (3) is flush with the rear side of the overlapping joint (1). The right end of the overlapping joint pre-embedded steel plate (3) extends out of the right end face (14) of the overlapping joint (1). The front side of the overlapping joint (1) is provided with a first caulking joint (16). The bearing joint (2) is pre-embedded with a bearing joint pre-embedded steel plate (4), the rear side of the bearing joint (2) is provided with a relief groove that is compatible with the lap joint pre-embedded steel plate (3), the rear side of the bearing joint pre-embedded steel plate (4) is exposed in the relief groove, and the front side of the bearing joint (2) is provided with a second caulking joint (17). The lap joint embedded steel plate (3) of the partition wall body on the left is embedded in the relief groove of the partition wall body on the right, so that the rear side of the bearing joint embedded steel plate (4) of the partition wall body on the right is attached to the front side of the lap joint embedded steel plate (3) of the partition wall body on the left and is welded and fixed by weld (5). The first caulking joint (16) of the partition wall body on the left and the second caulking joint (17) of the partition wall body on the right together form a caulking groove (9), which is filled with fireproof sealant.

2. The prefabricated multi-layer smoke barrier suitable for tunnels according to claim 1, characterized in that, The partition wall body is provided with a post-grouting pipe (7) for sealing grouting. One end of the post-grouting pipe (7) extends to the right end face (14) of the joint (1), and the other end of the post-grouting pipe (7) extends to the rear side of the joint (1).

3. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 2, characterized in that, Multiple post-grouting pipes (7) are evenly distributed vertically along the inner side of the partition wall body.

4. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 1, characterized in that, A padding layer (8) is provided between the right end face (14) of the partition wall body on the left and the left end face of the partition wall body on the right.

5. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 4, characterized in that, The padding layer (8) is a cork board.

6. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 1, characterized in that, The front and rear sides of the partition wall are coated with fire-retardant paint (15).

7. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 1, characterized in that, Anchor steel bars (6) are pre-embedded in the main body of the partition wall. The pre-embedded steel plate (3) of the lap joint is welded and fixed to the anchor steel bars (6). The pre-embedded steel plate (4) of the bearing joint is welded and fixed to the anchor steel bars (6).

8. A prefabricated multi-layer smoke barrier suitable for tunnels according to claim 1, characterized in that, The lap joint embedded steel plate (3) is at the same height as the main body of the partition wall, and the bearing joint embedded steel plate (4) is at the same height as the main body of the partition wall.

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