A live threshold device for the civil air defense door of a two-way ramp tunnel

Abstract

The present invention discloses a movable threshold device for a civil air defense door of a two-way ramp tunnel, which includes a threshold assembly and a lower doorframe assembly. The threshold assembly is detachably connected to the lower doorframe assembly. The threshold assembly is disposed on a two-way ramp ground that slopes in two directions, namely longitudinally and transversely. The lower doorframe assembly is buried under the two-way ramp ground. The bottom surface of the threshold assembly and the top surface of the lower doorframe assembly are both flush with the two-way ramp ground. By setting the bottom surface of the threshold assembly and the top surface of the lower doorframe assembly to be both flush with the two-way ramp ground, a threshold device for a civil air defense door applicable to an underground lane with two-way designed ramps (longitudinal and transverse) in a tunnel is realized. The threshold assembly and the lower doorframe assembly are detachably connected, which meets the civil air defense requirements during wartime installation and does not affect daily traffic when disassembled usually, solving the problem that existing conventional civil air defense doors cannot be installed and used in lanes with two-way designed ramps (longitudinal and transverse).

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense doors for tunnel underground roads, and particularly to a movable threshold device for a civil air defense door in a two-way slope tunnel. Background Art

[0002] Existing civil air defense door thresholds are divided into two forms: movable thresholds and fixed thresholds. Among them, the fixed threshold is directly 150 mm higher than the formed ground when pouring concrete, and the movable threshold is flush with the ground and does not protrude above the ground. A movable steel threshold is made on the lower sill of the door frame and fixed with bolts. The characteristic of the movable threshold of the civil air defense door is that the threshold is not installed usually, the ground is flat, which is convenient for the passage of people and vehicles. During wartime, the threshold is quickly installed to meet the requirements of protection and airtightness functions, and the peacetime-wartime conversion function is quickly realized. However, for the existing movable thresholds, the bottom plate is horizontally structured and is only applicable to the entrances and exits of civil air defense projects such as shopping malls, hospitals, warehouses, and underground parking garages with a flat ground.

[0003] At present, there is no civil air defense door that can be installed on the underground vehicle road surface with a two-way designed slope (longitudinal and transverse). The lower edge of the threshold of the existing civil air defense door is a horizontal plane or a single-direction inclined plane, which is only applicable to be installed on the underground lane with a horizontal or single-direction inclined road surface. For the underground lane with a two-way designed slope (longitudinal and transverse) in the tunnel, the existing solutions cannot meet the installation and opening requirements of the civil air defense door. Summary of the Invention

[0004] An object of the present invention is to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a movable threshold device for a civil air defense door in a two-way slope tunnel, including a threshold assembly and a lower door frame assembly. The threshold assembly is detachably connected to the lower door frame assembly. The threshold assembly is disposed on a two-way slope ground that is inclined in two directions, namely longitudinally and transversely. The lower door frame assembly is buried under the two-way slope ground. The bottom surface of the threshold assembly and the top surface of the lower door frame assembly are both flush with the two-way slope ground.

[0005] Beneficial effects: By setting the bottom surface of the threshold assembly and the top surface of the lower door frame assembly to be both flush with the two-way slope ground, a threshold device for a civil air defense door applicable to the underground lane with a two-way designed slope (longitudinal and transverse) in the tunnel is realized. The threshold assembly is detachably connected to the lower door frame assembly. During wartime, the installation meets the requirements of civil air defense, and during peacetime, the disassembly does not affect daily traffic, solving the problem that the existing conventional civil air defense doors cannot be installed and used in the lane with a two-way designed slope (longitudinal and transverse).

[0006] In some embodiments of the present invention, the lower doorframe assembly includes a mounting member, a plurality of second connecting members, and a fixing assembly. The top surface of the mounting member is flush with the two-way sloping ground. The fixing assembly is located below the mounting member and is spaced apart from the mounting member. The two ends of the second connecting member are respectively connected to the fixing assembly and the mounting member, and at least a part of the fixing assembly is connected to the steel bars in the two-way sloping ground.

[0007] In some embodiments of the present invention, the fixing assembly includes a first fixing member and a second fixing member. The first fixing member is connected to the second fixing member, and at least a part of the first fixing member and at least a part of the second fixing member are connected to the steel bars in the two-way sloping ground.

[0008] In some embodiments of the present invention, the first fixing member includes a first fixing portion and a second fixing portion. One end of the first fixing portion is connected to one end of the second fixing portion. The first fixing portion is horizontally arranged, and the second fixing portion is perpendicular to the first fixing portion. The first fixing portion or the second fixing portion is connected to the steel bars in the two-way sloping ground.

[0009] In some embodiments of the present invention, the second fixing member includes a third fixing portion and a fourth fixing portion. One end of the third fixing portion is connected to one end of the fourth fixing portion. The third fixing portion is horizontally arranged, and the fourth fixing portion is perpendicular to the third fixing portion. The third fixing portion or the fourth fixing portion is connected to the steel bars in the two-way sloping ground. The second fixing portion is connected to the fourth fixing portion, and the fixing assembly is in a T shape.

[0010] In some embodiments of the present invention, the threshold assembly includes a bottom member and a threshold portion. The threshold portion is connected to the bottom member. The bottom member is disposed on the two-way sloping ground, and the threshold portion is located above the bottom member. The bottom member is detachably connected to the mounting member, and the bottom surface of the bottom member is flush with the two-way sloping ground.

[0011] In some embodiments of the present invention, the threshold portion includes a first connecting member and a top member. One end of the first connecting member is connected to one side of the bottom member, and the other end is connected to one side of the top member. The first connecting member is vertically arranged, and the top member is horizontally arranged.

[0012] In some embodiments of the present invention, the threshold assembly further includes a plurality of rib members. The two ends of the rib members are respectively connected to the bottom member and the top member. The rib members are arranged pointing to the first connecting member, and the rib members are spaced apart from the first connecting member. The rib members are perpendicular to the top member.

[0013] In some embodiments of the present invention, the movable threshold device further includes a sealing structure, and the sealing structure is disposed at the joint between the threshold assembly and the mounting member.

[0014] In some embodiments of the present invention, a third fixing member is provided on a side of the first connecting member away from the rib member, the third fixing member is detachably connected to the top surface of the mounting member, a stepped portion recessed upward is provided on a side of the third fixing member close to the bottom member, and at least part of the first connecting member, at least part of the mounting member, and the stepped portion enclose to form a cavity, and the sealing structure is placed in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic diagram of a tunnel civil air defense door on the lateral slope ground of a two-way slope ground;

[0017] Figure 2 is a schematic structural diagram of the movable threshold device on the longitudinal slope ground in an embodiment of the present invention;

[0018] Figure 3 is Figure 2 a schematic structural diagram with the threshold assembly removed;

[0019] Figure 4 is Figure 2 a schematic structural diagram with the two-way slope ground and the lower doorframe assembly removed.

[0020] REFERENCE SIGNS:

[0021] 10 - Threshold assembly;

[0022] 11 - Bottom member;

[0023] 12 - Threshold portion;

[0024] 13 - First connecting member;

[0025] 14 - Top member;

[0026] 15 - Rib member;

[0027] 16 - Bottom surface of the bottom member;

[0028] 20 - Lower doorframe assembly;

[0029] 21 - Mounting member;

[0030] 201 - Top surface of the mounting member;

[0031] 22 - Second connecting member;

[0032] 23 - Fixing assembly;

[0033] 24 - First fixing member;

[0034] 25 - First fixing portion;

[0035] 26 - Second fixing portion;

[0036] 27 - Second fixing member;

[0037] 28 - Third fixing portion;

[0038] 29 - Fourth fixing portion;

[0039] 30 - Two-way ramp ground;

[0040] 31 - Post-cast concrete structure;

[0041] 32 - Reinforced concrete structure floor slab;

[0042] 33 - Steel bars;

[0043] 40 - Cavity;

[0044] 50 - Third fixing member;

[0045] 51 - Fifth fixing portion;

[0046] 52 - Step portion;

[0047] 53 - Bottom surface of the fifth fixing portion;

[0048] 60 - Fastener;

[0049] 70 - Door center line;

[0050] 71 - Bottom elevation of the door leaf;

[0051] 72 - Top elevation of the threshold. Detailed implementation manners

[0052] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0053] It should be understood that in this text, if there are terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "top", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In this text, terms such as "first", "second", etc. are used to distinguish different objects, rather than to describe a specific order. In this text, if there is a description of "several" or "multiple", the meaning of "several" is one or more, and the meaning of "multiple" is more than two. Understandings such as "greater than", "less than", "exceeding", etc. do not include the base number, and understandings such as "above", "below", "within", etc. include the base number.

[0054] It should be noted that in this text, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In the description of the present invention, unless otherwise clearly defined, words such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0055] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation to the protection scope of the present invention.

[0056] Referring to Figures 1 to 4 , the present invention provides a movable threshold device for a civil air defense door of a two-way slope tunnel, including a threshold assembly 10 and a lower doorframe assembly 20. The threshold assembly 10 is detachably connected to the lower doorframe assembly 20. The threshold assembly 10 is disposed on a two-way slope ground 30 that is inclined in two directions, namely longitudinally and transversely. The lower doorframe assembly 20 is buried under the two-way slope ground 30. The bottom surface of the threshold assembly 10 and the top surface of the lower doorframe assembly 20 are both flush with the two-way slope ground 30.

[0057] Continuing to refer to Figures 1 to 3, the lower doorframe assembly 20 includes a mounting member 21, a plurality of second connecting members 22, and a fixing assembly 23. The top surface 201 of the mounting member is flush with the two-way ramp ground 30. The fixing assembly 23 is located below the mounting member 21 and is spaced from the mounting member 21. The two ends of the second connecting member 22 are respectively connected to the fixing assembly 23 and the mounting member 21. At least part of the fixing assembly 23 is connected to the steel bars 33 in the two-way ramp ground 30. The opposite sides of the fixing assembly 23 and the opposite sides of the mounting member 21 are both connected to the second connecting member 22 and are arranged in parallel. The second connecting member 22 is arranged perpendicular to the fixing assembly 23.

[0058] The fixing assembly 23 includes a first fixing member 24 and a second fixing member 27. The first fixing member 24 is connected to the second fixing member 27. At least part of the first fixing member 24 and at least part of the second fixing member 27 are connected to the steel bars 33 in the two-way ramp ground 30.

[0059] The first fixing member 24 includes a first fixing portion 25 and a second fixing portion 26. One end of the first fixing portion 25 is connected to one end of the second fixing portion 26. The first fixing portion 25 is arranged horizontally, and the second fixing portion 26 is perpendicular to the first fixing portion 25. The first fixing portion 25 or the second fixing portion 26 is connected to the steel bars 33 in the two-way ramp ground 30, or both the first fixing portion 25 and the second fixing portion 26 are connected to the steel bars 33 in the two-way ramp ground 30. Specifically, it is connected to the steel bars 33 in the two-way ramp ground 30 by welding. Specifically, the end of the first fixing portion 25 far from the second fixing portion 26 is connected to the second connecting member 22. The second connecting member 22 is arranged perpendicular to the first fixing portion 25. The second fixing portion 26 is located below the first fixing portion 25.

[0060] The second fixing member 27 includes a third fixing portion 28 and a fourth fixing portion 29. One end of the third fixing portion 28 is connected to one end of the fourth fixing portion 29. The third fixing portion 28 is arranged horizontally, and the fourth fixing portion 29 is perpendicular to the third fixing portion 28. The third fixing portion 28 or the fourth fixing portion 29 is connected to the steel bars 33 in the two-way ramp ground 30. In some other embodiments, both the third fixing portion 28 and the fourth fixing portion 29 are connected to the steel bars 33 in the two-way ramp ground 30. Specifically, the end of the third fixing portion 28 far from the fourth fixing portion 29 is connected to the second connecting member 22. The second connecting member 22 is arranged perpendicular to the third fixing portion 28. The fourth fixing portion 29 is located below the third fixing portion 28. The first fixing portion 25 is flush with the third fixing portion 28. Further, the top surface of the first fixing portion 25 is flush with the top surface of the third fixing portion 28.

[0061] Specifically, the first fixing member 24 is arranged in an L shape, and the second fixing member 27 is arranged in an L shape. In some embodiments, the first fixing member 24 is an angle steel, and the second fixing member 27 is an angle steel. It can be understood that the first fixing member 24 and the second fixing member 27 can be in other arbitrary forms such as channel steel. The second fixing portion 26 is connected to the fourth fixing portion 29, and the fixing assembly 23 is in a T shape, that is, the first fixing member 24 and the second fixing member 27 are connected back to back and merged, so that the fixing assembly 23 is in a T shape. Specifically, the first fixing member 24 and the second fixing member 27 are fixed by welding. In some embodiments, the first fixing member 24 and the second fixing member 27 are welded and fixed to form an integral body. In another embodiment, the fixing assembly 23 is integrally formed by processes such as casting.

[0062] The two-way ramp ground 30 with slopes in both the longitudinal and transverse directions includes a post-cast concrete structure 31 and a reinforced concrete structural floor slab 32 laid from top to bottom. The fixing assembly 23 is arranged in the reinforced concrete structural floor slab 32 and is welded and fixed to the steel bars 33 in the reinforced concrete structural floor slab 32. The mounting member 21 and the second connecting member 22 are arranged in the post-cast concrete structure 31.

[0063] The threshold assembly 10 includes a bottom member 11 and a threshold portion 12, and the threshold portion 12 is connected to the bottom member 11. Specifically, the bottom member 11 and the threshold portion 12 are fixed by welding. The bottom member 11 is arranged on the two-way ramp ground 30, the threshold portion 12 is located above the bottom member 11, the bottom member 11 is detachably connected to the mounting member 21, and the bottom surface 16 of the bottom member is flush with the two-way ramp ground 30.

[0064] The threshold portion 12 includes a first connecting member 13 and a top member 14. One end of the first connecting member 13 is connected to one side of the bottom member 11, and the other end is connected to one side of the top member 14. The first connecting member 13 is arranged vertically, and the top member 14 is arranged horizontally. The top member 14 and the bottom member 11 are arranged at an interval in the vertical direction, and the top member 14 is located above the bottom member 11.

[0065] The threshold assembly 10 further includes a plurality of rib members 15. Both ends of the rib members 15 are respectively connected to the bottom member 11 and the top member 14. The rib members 15 are arranged pointing to the first connecting member 13, the rib members 15 are arranged at an interval from the first connecting member 13, and the rib members 15 are perpendicular to the top member 14. In some embodiments, a plurality of rib members 15 are arranged, and the plurality of rib members 15 are evenly distributed at equal intervals along the length directions of the bottom member 11 and the top member 14.

[0066] The movable threshold device further includes a sealing structure, and the sealing structure is arranged at the joint between the threshold assembly 10 and the mounting member 21 to achieve the effect of sealing and waterproofing. In some embodiments, the sealing structure is a sealing strip, preferably a silicone strip. It can be understood that the sealing structure can be other sealing filling materials such as filled silicone rubber, epoxy resin or silicone glue.

[0067] On one side of the first connecting member 13 away from the rib member 15, a third fixing member 50 is provided. The third fixing member 50 is detachably connected to the top surface 201 of the mounting member, and the bottom surface of the third fixing member 50 is flush with the top surface 201 of the mounting member. Specifically, the third fixing member 50 includes a fifth fixing portion 51 and a stepped portion 52 with an upward depression on one side close to the bottom member 11. The fifth fixing portion 51 is fixedly connected to the stepped portion 52. The bottom surface 53 of the fifth fixing portion is detachably connected to the top surface 201 of the mounting member, and the bottom surface 53 of the fifth fixing portion is flush with the top surface 201 of the mounting member. At least part of the first connecting member 13 or at least part of the bottom member 11, at least part of the mounting member 21, and the stepped portion 52 enclose a cavity 40, and the sealing structure is placed in the cavity 40. The cavity 40 reserves space for setting the sealing structure at the joint between the threshold assembly 10 and the mounting member 21 after installation, and the stepped portion 52 of the third fixing member 50 can also provide protection for the sealing structure. In some embodiments, the third fixing member 50 is arranged in a Z shape. It can be understood that during the actual installation process, due to manufacturing and installation errors, there may be a gap between the stepped portion 52 and the first connecting member 13, that is, the stepped portion 52 and the first connecting member 13 do not completely contact. In some embodiments, the cross-sectional shape of the stepped portion 52 is arranged in an L shape, and the cross-section of the cavity 40 is rectangular. It can be understood that the cross-sectional shape of the stepped portion 52 can be any other shape such as an arc. It can be understood that the cross-sectional shape of the cavity 40 can be any other shape such as a triangle.

[0068] The threshold assembly 10 is detachably connected to the lower door frame assembly 20 through a fastener 60. It can be understood that the fastener 60 is a bolt or other fastening component.

[0069] The bottom member 11 is provided with a first mounting portion (not shown), the mounting member 21 is provided with a second mounting portion (not shown), and the fifth fixing portion 51 is provided with a third mounting portion (not shown). The first mounting portion, the second mounting portion, and the third mounting portion are arranged as through holes. The first mounting portion and the second mounting portion are arranged in butt joint, and the third mounting portion and the second mounting portion are arranged in butt joint. The fastener 60 sequentially passes through the first mounting portion and the second mounting portion, and detachably connects the threshold assembly 10 to the lower door frame assembly 20 through threaded connection. Specifically, after installation, the bottom surface 16 of the bottom member abuts against and is flush with the top surface 201 of the mounting member. The fastener 60 sequentially passes through the third mounting portion and the second mounting portion, and detachably connects the third fixing member 50 to the lower door frame assembly 20 through threaded connection.

[0070] Continue to refer to Figure 1 , Figure 1 which is a schematic diagram of a tunnel air defense door for a two-way ramp ground, Figure 1The displayed ground is a lateral slope. The civil air defense door is divided into two left and right door leaves with the door center line 70 as the boundary. The bottom elevation 71 of the left door leaf is equal to the bottom elevation 71 of the right door leaf, that is, the bottom elevations 71 of the two left and right door leaves are flush, that is, the bottom opening heights of the two left and right door leaves are equal. Live threshold devices are installed on both the left and right sides with the door center line 70 as the boundary, denoted as the left-side live threshold device and the right-side live threshold device. The bottom elevation of the thresholds of the two left and right live threshold devices is flush with the two-way slope ground 30. The top elevation 72 of the threshold of the left-side live threshold device is equal to the top elevation 72 of the threshold of the right-side live threshold device, that is, the top elevation 72 of the threshold of the left-side live threshold device is flush with the top elevation 72 of the threshold of the right-side live threshold device. At the same time, the top elevation 72 of the thresholds of the two left and right live threshold devices is higher than the bottom elevation 71 of the two left and right door leaves, and the bottom elevation 71 of the two left and right door leaves is higher than the bottom elevation of the thresholds of the two left and right live threshold devices. Since the bottom elevation of the thresholds of the two left and right live threshold devices is flush with the two-way slope ground 30, that is, the bottom elevation 71 of the two left and right door leaves is higher than the two-way slope ground 30. The distance between the bottom elevation of the threshold of the live threshold device, that is, the two-way slope ground 30, and the bottom elevation 71 of the door leaf is the opening height at the bottom of the door leaf, which solves the problem that the door leaf cannot be opened or closed due to the two-way slope. When the threshold component 10 is removed, the door leaf can be opened and closed freely without being affected by the two-way slope. When the threshold component 10 is installed, the live threshold device covers the gap between the bottom of the door leaf and the two-way slope ground 30, achieving the airtightness of the door leaf and meeting the requirements of civil air defense.

[0071] Continue to refer to Figure 2 , when an emergency or a critical situation occurs, such as during a war, the threshold component 10 is connected and installed to the lower doorframe component 20 to block vehicles and the like, meeting the requirements of civil air defense. Continue to refer to Figure 3 , usually, the threshold component 10 is removed to meet the needs of normal traffic. Figure 2 and Figure 3 are Figure 1 side views, and the displayed ground is a longitudinal slope. Figure 1 and Figure 2 、 Figure 3 The combination of

[0072] Compared with the existing live threshold technical solutions that can only be applied to underground roads with a horizontal or one-way inclined ground, the live threshold device of the tunnel civil air defense door of the present invention is provided with a bottom member 11 and a mounting member 21 that are inclined in two directions (longitudinally and transversely), and can flexibly adjust the opening height of the bottom of the door leaf. It is applied to the ground lane in the tunnel with two-way slopes (longitudinally and transversely), solves the installation and use of civil air defense doors under such working conditions, has the advantage of flexible disassembly and assembly, and can meet the requirements of normal traffic and civil air defense in wartime. Moreover, the problem that the door leaf cannot be opened or closed due to two-way slopes in any case can be solved by adjusting the opening height of the bottom of the door leaf.

[0073] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limited nature of written expression and objectively existing infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A live threshold device for a civil air defense door of a two-way ramp tunnel, characterized in that, it includes a threshold component and a lower doorframe component. The threshold component is detachably connected to the lower doorframe component. The threshold component is disposed on a two-way ramp ground that is inclined in two directions, namely longitudinally and transversely. The lower doorframe component is buried under the two-way ramp ground. The bottom surface of the threshold component and the top surface of the lower doorframe component are both flush with the two-way ramp ground; The lower doorframe component includes a mounting member, several second connecting members, and a fixing component. The top surface of the mounting member is flush with the two-way ramp ground. The fixing component is located below the mounting member and is spaced from the mounting member. The two ends of the second connecting member are respectively connected to the fixing component and the mounting member. At least part of the fixing component is connected to the steel bars in the two-way ramp ground; The threshold component includes a bottom member and a threshold part. The threshold part is connected to the bottom member. The bottom member is disposed on the two-way ramp ground. The threshold part is located above the bottom member. The bottom member is detachably connected to the mounting member. The bottom surface of the bottom member is flush with the two-way ramp ground; The threshold part includes a first connecting member and a top member. One end of the first connecting member is connected to one side of the bottom member, and the other end is connected to one side of the top member. The first connecting member is vertically arranged, and the top member is horizontally arranged; The threshold component further includes several rib members. The two ends of the rib member are respectively connected to the bottom member and the top member. The rib member is arranged pointing to the first connecting member. The rib member is spaced from the first connecting member. The rib member is perpendicular to the top member; The live threshold device further includes a sealing structure. The sealing structure is disposed at the joint between the threshold component and the mounting member; A third fixing member is provided on the side of the first connecting member away from the rib member. The third fixing member is detachably connected to the top surface of the mounting member. A stepped portion that is recessed upward is provided on the side of the third fixing member close to the bottom member. At least part of the first connecting member, at least part of the mounting member, and the stepped portion enclose a cavity. The sealing structure is placed in the cavity.

2. The live threshold device for a civil air defense door of a two-way ramp tunnel according to claim 1, characterized in that: The fixing component includes a first fixing member and a second fixing member. The first fixing member is connected to the second fixing member. At least part of the first fixing member and at least part of the second fixing member are connected to the steel bars in the two-way ramp ground.

3. The live threshold device for a civil air defense door of a two-way ramp tunnel according to claim 2, characterized in that: The first fixing member includes a first fixing portion and a second fixing portion. One end of the first fixing portion is connected to one end of the second fixing portion. The first fixing portion is horizontally arranged. The second fixing portion is perpendicular to the first fixing portion. The first fixing portion or the second fixing portion is connected to the steel bars in the two-way ramp ground.

4. The live threshold device for a civil air defense door of a two-way ramp tunnel according to claim 3, characterized in that: The second fixing member includes a third fixing portion and a fourth fixing portion. One end of the third fixing portion is connected to one end of the fourth fixing portion. The third fixing portion is horizontally arranged, and the fourth fixing portion is perpendicular to the third fixing portion. The third fixing portion or the fourth fixing portion is connected to the steel bars in the two-way ramp ground. The second fixing portion is connected to the fourth fixing portion, and the fixing assembly is in a T shape.

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