CN115012786B

CN115012786B - Light reinforced concrete airtight door and manufacturing method thereof

Info

Publication number: CN115012786B
Application number: CN202210708479.9A
Authority: CN
Inventors: 傅越海
Original assignee: Hangzhou Qianjiang Civil Defence Equipment Co ltd
Current assignee: Hangzhou Qianjiang Civil Defence Equipment Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-10-03
Anticipated expiration: 2042-06-22
Also published as: CN115012786A

Abstract

The application relates to the technical field of civil air defense doors, in particular to a lightweight reinforced concrete airtight door and a manufacturing method thereof. The application aims to improve the defects of large concrete consumption, heavy mass and the like of the conventional reinforced concrete airtight door, and has the advantages of reducing the concrete consumption by 30%, along with environmental protection and saving the production cost.

Description

Light reinforced concrete airtight door and manufacturing method thereof

Technical Field

The application relates to the technical field of civil air defense doors, in particular to a lightweight reinforced concrete airtight door and a manufacturing method thereof.

Background

Urban underground civil air defense engineering fighter entrance and exit is provided with a civil air defense door: the first frame is a reinforced concrete protective airtight door, the second frame is an airtight door, the first frame is used for blocking cores and normal weapon shock waves, and the second frame is used for preventing radioactive contamination and chemical warfare agents from penetrating into engineering. The airtight door is generally built by steel bars and then is formed by pouring concrete.

In the related art scheme, the inventor finds that at least the following problems exist: the airtight door is generally large and solid, so that the amount of concrete is large, the airtight door is heavy, and the problem of resource waste occurs.

Disclosure of Invention

In order to solve the problem of concrete consumption of the airtight door, the application provides a lightweight reinforced concrete airtight door and a manufacturing method thereof.

The application provides a light reinforced concrete airtight door, which adopts the following technical scheme: including concrete body and steel frame, the concrete body is equipped with first side along the direction of self thickness, the steel frame is around setting up and connecting in the concrete body along first side, the direction along self thickness in the concrete body is overlapped in proper order and is equipped with first frame, second frame and third frame, the second frame is including a plurality of weight-reducing parts that set up side by side, every weight-reducing part is equipped with the cavity, first frame and third frame are connected in the steel frame.

By adopting the technical scheme, the problem of large concrete consumption of the conventional reinforced concrete airtight door is improved through the weight reducing piece, 30% of the concrete consumption can be reduced, and the effects of environmental protection and production saving are realized; the cavity body of the weight-reducing piece reduces the overall weight of the sealing door, so that the use is easier; the weight reducing parts are arranged independently, so that concrete bodies still exist between the weight reducing parts, and the strength of the sealing door can still be maintained.

Optionally: the first frame layer and the third frame layer all include crisscross first reinforcing bar and the second reinforcing bar that sets up, first reinforcing bar sets up a plurality of and equidistance parallel side by side along second reinforcing bar center pin direction, the second reinforcing bar sets up a plurality of and equidistance parallel side by side along first reinforcing bar center pin direction, the crisscross department fixed connection of first reinforcing bar and second reinforcing bar just forms a plurality of overlapping portions, every the tip of first reinforcing bar and second reinforcing bar all is equipped with the kink, the kink is connected in the steel frame.

By adopting the technical scheme, the staggered structures of the first steel bars and the second steel bars form the net-shaped frame layer, so that the limiting effect on the weight-reducing piece is achieved in the pouring process, and the flowing of concrete is facilitated; after casting and forming, the net-shaped frame layer enhances the strength of the airtight door.

Optionally: the concrete pile comprises a concrete body, and is characterized in that a first connecting piece is arranged between the first frame layer and the third frame layer, the first connecting piece comprises a tie bar and a fixing piece, two ends of the tie bar are respectively provided with a hook portion, one hook portion is abutted against an overlapping portion of the first frame layer, the other hook portion is abutted against an overlapping portion of the third frame layer along the thickness direction of the concrete body, and each hook portion is connected with the corresponding overlapping portion through the fixing piece.

Through adopting above-mentioned technical scheme, carry out simultaneous fixed connection with the relative overlapping portion of first frame layer and third frame layer through first connecting piece, solved when concrete placement, first frame layer and third frame layer to keeping away from the problem of subtracting heavy piece both sides inflation, first frame layer and third frame layer have played spacing effect each other, have improved the stability of structure.

Optionally: and a second side surface is arranged on one side of each weight reducing piece close to the first frame layer, and the second side surface is an arc surface with the middle end protruding towards the direction of the first frame layer.

Through adopting above-mentioned technical scheme, when sealing door shaping on concrete placement platform, the weight-reducing member is equipped with the arcwall face and is located the top and place, and the arc is not only played the effect of drainage to the concrete for the weight-reducing member is inseparabler with the connection of concrete body, has increased the area of being connected of weight-reducing member and concrete moreover, has further improved sealing door's structural strength.

Optionally: and a first opening end is arranged on one side of each weight-reducing piece, close to the third frame layer, and the first opening ends are communicated with the cavity.

By adopting the technical scheme, if the weight-reducing piece is of a closed cavity structure, the manufacturing process of the weight-reducing piece is complex, such as a blow molding process. When one side of the weight-reducing member is of an opening structure, so that the weight-reducing member forms a cover body structure, the weight-reducing member can be formed by a simple process, such as compression molding, and the manufacturing cost of the weight-reducing member is reduced.

Optionally: and a second connecting piece is arranged between the adjacent weight reducing pieces and comprises a connecting pipe, and two ends of the connecting pipe are connected with the weight reducing pieces in a threaded mode.

Through adopting above-mentioned technical scheme, the weight-reducing piece forms the second frame layer through the second connecting piece, is convenient for set up whole weight-reducing piece in first frame layer and third frame layer pour. The method can prevent the distance between the weight reducing parts from being shifted and changed in the pouring process, and the stress balance strength of the sealing door can be affected after the weight reducing parts move.

Optionally: the weight reducing device comprises a weight reducing part, and is characterized in that a third connecting piece is arranged between the weight reducing parts, the third connecting piece comprises a connecting pipe and an outer pipe body, the connecting pipe is arranged on the side wall of the weight reducing part, a thread surface is arranged on the side wall of an inner diameter hole of the connecting pipe, the outer pipe body is arranged between the connecting pipes of the adjacent weight reducing parts, two inner pipe bodies matched with threads are arranged in the inner diameter hole of the outer pipe body, a rotatable driving piece is arranged on the outer pipe body, the driving piece is connected to the inner pipe body, the driving piece drives the inner pipe body to rotate, and one end of the driving inner pipe body moves into the inner diameter hole of the connecting pipe along the outer pipe body.

Through adopting above-mentioned technical scheme, when the at least two directions of weight-reducing member are fixed, outer body is located between the joint intubate of adjacent weight-reducing member, through rotating the driving piece after for in the one end of interior body moved the joint intubate, thereby fix two adjacent weight-reducing members, then do not need to break off the adjacent weight-reducing member application of force and connect the plug, the operation of being convenient for.

Optionally: the driving piece comprises a plate body, a cover plate and two first rod pieces, wherein the plate body is arranged at the middle end of the cover plate, two sides of the outer pipe body, which are positioned on the plate body, are provided with two first rod pieces which are rotatably connected to the plate body, the first rod pieces are arranged at the center of the plate body and are arranged along the central axis direction of the inner pipe body, each first rod piece is provided with a second rod piece, the inner pipe body is provided with a guide rail for embedding one end of the second rod piece, and the guide rail is arranged along the central axis direction of the inner pipe body.

Through adopting above-mentioned technical scheme, can hide in interior body through the structure of first member and second member for drive interior body rotates along with the plate body together, the structure of second member makes interior body move into in the joint pipe along outer body in the pivoted.

Optionally: the utility model discloses a bayonet lock, including outer body, joint pipe, apron, outer body, joint pipe is close to one side of outer body and is equipped with the buckle, joint pipe is equipped with the buckle near one side of outer body, joint pipe is equipped with the spring piece of connecting in the buckle, one side of outer body near joint pipe is equipped with the draw-in groove that is used for the buckle embedding, the both ends of apron are equipped with the end of placing that extends outer body, place the end and be located joint pipe's axial outside.

Through adopting above-mentioned technical scheme, carry out spacing fixedly through the structure of buckle and draw-in groove to outer body, need not to carry out artifical spacing. When the placing end of the cover plate is attached to the outer side of the axial direction of the connecting pipe, the cover plate is directly rotated to drive the driving piece to rotate, so that the operation is more convenient, and the placing end rotates along the periphery of the connecting pipe, so that the adjustment is more stable.

A manufacturing method of a lightweight reinforced concrete airtight door comprises the following steps: manufacturing a first frame layer: the first steel bars and the second steel bars are stacked on the mould in a crossed mode, and the first steel bars and the second steel bars are fixedly connected in a spot welding connection mode; manufacturing a third frame layer: the first steel bars and the second steel bars are stacked on the mould in a crossed mode, and the first steel bars and the second steel bars are fixedly connected in a spot welding connection mode; connecting a plurality of weight-reducing parts side by side to form a second frame layer; a second frame layer is arranged between the first frame layer and the third frame layer, and the first frame layer, the second frame layer and the third frame layer are connected by a first connecting piece to form a reinforcing steel bar net rack; placing the manufactured steel bar net rack into a steel frame, and fixedly connecting the steel bar net rack and the steel frame in an electric welding connection mode to form a door leaf; and placing the door leaf on a concrete vibration platform mould, pouring concrete into the door leaf, and embedding the reinforced bar net frame into the concrete body to form the airtight door after the concrete is solidified into the concrete body.

By adopting the technical scheme, each layer is fixedly connected in a welding mode, so that the operation is convenient, and the connection strength of each layer of frame body is ensured; the first frame layer, the second frame layer and the third frame layer are connected and fixed into a whole through the first connecting piece, so that the later-stage fixed connection with the steel frame is facilitated; the steel frame and the steel bar net frame form a door leaf structure of the airtight door, so that the step of forming a later-stage vibration platform is not easy to exude, and the airtight door with the required size is formed; the pouring mode of the vibration platform enables the contact between the concrete and the door leaf to be tighter, and the problem that air bubbles affect the strength is solved.

In summary, the application has the following beneficial effects: the lightweight reinforced concrete airtight door disclosed by the application is used for improving the defects of large concrete consumption, heavy mass and the like of the conventional reinforced concrete airtight door, and has the advantages of reducing the concrete consumption by 30%, being environment-friendly, saving the production cost and the like.

A plurality of single damping parts are embedded in the airtight door, and the damping parts are hollow cavities, so that the consumption of concrete is reduced; the connection of a plurality of shock attenuation pieces sets up the installation of earlier stage of being convenient for and fixes, still can keep airtight door's sturdiness after airtight door shaping.

The adjacent weight-reducing parts are connected in a plurality of modes, and the weight-reducing parts are fixed and limited in a threaded connection mode, so that the weight-reducing part is simple in structure and convenient to operate; the tightness of the threaded connection is high, and concrete is prevented from penetrating into the cavity of the weight-reducing piece in the concrete pouring process.

Drawings

FIG. 1 is a schematic top view of a first embodiment of the present application;

FIG. 2 is a schematic side view of a first embodiment of the present application;

fig. 3 is a schematic view showing a state that a door leaf is not poured on a concrete pouring platform according to an embodiment of the present application;

FIG. 4 is a schematic view of a weight-reducing member according to a second embodiment of the present application;

FIG. 5 is a schematic illustration of the connection of two adjacent weight reduction members in accordance with a third embodiment of the present application;

FIG. 6 is a schematic view showing the connection structure of two adjacent weight-reducing members in a third embodiment of the present application;

FIG. 7 is a schematic diagram showing a disassembly structure of a third connecting member according to a third embodiment of the present application;

FIG. 8 is a schematic view showing a split structure of a buckle and a slot in a third embodiment of the present application;

FIG. 9 is a schematic view showing the structure of an unconnected state of adjacent weight-reducing members in the third embodiment of the present application;

FIG. 10 is a schematic view showing the structure of the third embodiment of the present application in which adjacent weight-reducing members are connected;

in the figure: 1. a concrete body; 2. a steel frame; 3. hinge pages; 4. a first shelf layer; 41. a first reinforcing bar; 42. a second reinforcing bar; 43. an overlapping portion; 44. a bending part; 5. a second shelf layer; 51. a weight-reducing member; 511. a second side; 512. a first open end; 513. a boss; 52. a cavity body; 6. a third shelf layer; 7. a first connector; 71. a tie bar; 711. a hook portion; 8. a second connector; 81. a connecting pipe; 9. a third connecting member; 91. a cannula; 92. an outer tube body; 93. an inner tube body; 94. a driving member; 941. a plate body; 942. a cover plate; 943. a first rod member; 944. a second rod member; 945. a guide rail; 95. a buckle; 951. an inclined plane; 96. a spring member; 97. a clamping groove; 98. a grooved rail; 10. a lock shaft; 11. and vibrating the platform die.

Detailed Description

In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

Embodiment one:

referring to fig. 1 and 2, a lightweight reinforced concrete airtight door comprises a door leaf, a concrete body 1, an upper hinge 3, a lower hinge 3 and a lock shaft 10, and is vertically installed. The door leaf includes steel frame 2 and reinforcing bar rack, and the reinforcing bar rack includes first frame layer 4, second frame layer 5 and third frame layer 6. The concrete body 1 is a cuboid, the thickness direction of the concrete body 1 is four first side surfaces which are connected in a surrounding mode, and the vertical two ends of the first side surface of the concrete body 1 are a front side surface and a rear side surface. The steel frame 2 is mounted in the first lateral direction of the concrete body 1. The steel frame 2 is formed with concave cell body, and the first side of concrete body 1 is laminated in the medial surface of cell body, and the both ends of steel frame 2 medial surface laminate in the front side and the trailing flank of concrete body 1.

Referring to fig. 1 and 2, each of the first and third reinforcement layers 4 and 6 includes first and second reinforcement bars 41 and 42, and the first reinforcement bars 41 are disposed in parallel at equal distances in the same horizontal plane, thereby forming a first reinforcement layer. The second rebar 42 is disposed in parallel and a plurality of equal distances in a same horizontal plane to form a second rebar layer. The first reinforcing bar layers and the second reinforcing bar layers are stacked, and each first reinforcing bar 41 and each second reinforcing bar 42 are in a staggered structure and form an overlapping portion 43. Each overlapping portion 43 is fixedly connected by welding, the ends of the first steel bar 41 and the second steel bar 42 are opposite bending portions 44, and the side faces of the bending portions 44 are fixedly connected with the inner side face of the steel frame 2 by welding. In this embodiment, the angle at which the first reinforcing bars 41 and the second reinforcing bars 42 are staggered is 90 °, but is not limited to 90 °, and the angle may be set according to the requirement.

Referring to fig. 1 and 2, a first connecting member 7 is provided between the overlapping portion 43 of the first frame layer 4 and the overlapping portion 43 of the third frame layer 6, and the first connecting member 7 includes a tie bar 71 and a fixing member, which is a steel wire. The tie bar 71 includes straight bars and hooks 711 at two ends of the straight bars, the straight bars sequentially penetrate through the first frame layer 4 and the third frame layer 6, the straight bars do not penetrate through the weight-reducing member 51, and the straight bars are located between the weight-reducing members 51 or located at the side parts of the weight-reducing member 51 to limit positions. One of the hooks 711 catches the overlapping portion 43 of the first shelf layer 4 and is bound by a fixing member, and the other hook 711 catches the overlapping portion 43 of the third shelf layer 6 and is bound by a fixing member.

Referring to fig. 1 and 2, the second frame layer 5 includes a plurality of weight-reducing members 51 and a second connecting member 8, wherein the weight-reducing members 51 are disk bodies having a cavity 52, and the disk bodies are made of ABS. The disc body includes two second side surfaces 511 along the central axis direction, and when the weight-reducing member 51 is placed between the first frame layer 4 and the third frame layer 6, the two second side surfaces 511 face the first frame layer 4 and the third frame layer 6 respectively. The second side 511 facing the first shelf layer 4 is an arc surface, and the center of the arc surface protrudes toward the first shelf layer 4, so that the edge of the weight-reducing member 51 forms a diversion surface with a downward arc.

Referring to fig. 1 and 2, the second side 511 facing the third shelf 6 is a sealing surface, and the cavity 52 of the weight-reducing member 51 is in a sealed state, and the weight-reducing member 51 may be formed by a blow molding process. The second connecting piece 8 is used for connecting the adjacent weight-reducing pieces 51, the first connecting piece 7 comprises a connecting pipe 81, and outer side surfaces of two ends of the connecting pipe 81 along the central axis direction are respectively provided with an outer thread surface.

Referring to fig. 1 and 2, the circumferential side wall of the weight-reducing member 51 extends outward to form a boss 513, the boss 513 being provided with a through hole, and the inner wall of the through hole being provided with an internal thread surface that fits the external thread surface of the first connecting member 7. When the end part of the first connecting piece 7 is rotatably inserted into the inner through hole of the weight-reducing piece 51, the adjacent weight-reducing piece 51 is fixed and limited through the matched threaded surface structure. The protrusions 513 of the weight-reducing members 51 are arranged according to an array structure, the weight-reducing members 51 positioned at the edges are provided with two or three protrusions 513, and the middle weight-reducing member 51 is provided with four protrusions 513. The threads of the inner through holes of the adjacent bosses 513 are oppositely disposed, and when the first coupling member 7 is rotated in one direction, both ends can be respectively screwed into the bosses 513.

A manufacturing method of a lightweight concrete sealing door comprises the following steps: manufacturing a first frame layer 4: the first steel bar 41 and the second steel bar 42 are overlapped on the mould in a crossed mode, and the first steel bar 41 and the second steel bar 42 are fixedly connected in a spot welding connection mode; manufacturing a third frame layer 6: the first steel bar 41 and the second steel bar 42 are overlapped on the mould in a crossed mode, and the first steel bar 41 and the second steel bar 42 are fixedly connected in a spot welding connection mode; the pan-shaped disc made of ABS (engineering plastic) is connected into a pan-shaped disc frame by threads of a connecting pipe 81; a pot-shaped disc frame is placed between the first frame layer 4 and the third frame layer 6, and the first frame layer 4, the second frame layer 5 and the third frame layer 6 are connected by a first connecting piece 7 to form a reinforcing steel bar net frame; placing the manufactured steel bar net rack into a steel frame 2, and fixedly connecting the steel bar net rack with the steel frame 2 in an electric welding connection mode to form a door leaf; the parts of the upper hinge 3, the lower hinge 3, the lock shaft 10 and the like are fixed by electric welding; referring to fig. 3, a door leaf is placed on a concrete vibration platform mold, concrete is poured into the door leaf, the concrete is solidified into a concrete body 1, and a steel bar net frame is embedded in the concrete body 1 to form a closed door.

Embodiment two:

referring to fig. 4, the side of the weight-reducing member 51 facing the third frame layer 6 is a first open end 512, and the first open end 512 is communicated with the cavity 52 to form a state similar to a pot cover. When the hollow body 52 of the weight-reducing member 51 is in an open structure, the weight-reducing member 51 may be formed by a process of pressing a mold. When pouring, the first open end 512 of the weight-reducing member 51 is placed downwards, and since the first shelf layer 4 plays a limiting role on the weight-reducing member 51, only a small part of concrete will enter the inner cavity of the weight-reducing body, but the operation of vibration pouring will not fill the cavity 52.

Embodiment III:

referring to fig. 5 and 6, the adjacent weight-reducing members 51 are fixedly connected by a third connecting member 9, and the third connecting member 9 includes two outer tubes 92, two inner tubes 93, and a driving member 94. The inner diameter hole side wall of each outer tube 92 is provided with an inner thread surface, the outer wall of each inner tube 93 is provided with an outer thread surface, and the inner tube 93 is installed in the inner diameter hole of the outer tube 92 in a thread fit mode. The side wall of the weight-reducing member 51 is provided with a spigot pipe 91, the side wall of the bore of the spigot pipe 91 is provided with an internal thread surface, and the internal thread surface of the spigot pipe 91 is communicated with the internal thread surface of the outer pipe body 92.

Referring to fig. 6 and 7, one inner tube 93 is formed into two groups corresponding to one outer tube 92, each group corresponding to the joint pipe 91 of one weight-reducing member 51 in the adjacent. Two inner tubes 93 are all connected in driving piece 94, drive inner tube 93 through driving piece 94 and rotate, under the condition that outer tube 92 is motionless, inner tube 93 removes along the direction of outer tube 92 center pin for inner tube 93 removes along inner tube 93, and half when inner tube 93 removes to connect in the pipe 91 and stop removing, will connect the pipe 91 to fix with outer tube 92 through inner tube 93.

Referring to fig. 6 and 7, the driving member 94 includes a plate body 941, a cover plate 942, two first bars 943, and six second bars 944. The cover plate 942 has a semicircular arc structure, the plate body 941 is a circular plate body 941, and the circumferential side surface of the plate body 941 is fixed on one side of the cover plate 942 provided with an inner arc and is positioned at the middle end of the cover plate 942. The two outer tubes 92 are symmetrically installed on two sides of the plate 941 through bearings, the two first rods 943 are cylindrical rods and are located on two sides of the plate 941 respectively, and each first rod 943 is installed at the center of the plate 941 and is arranged along the central axis direction of the inner tube 93.

Referring to fig. 6 and 7, each of the first bars 943 is mounted with three second bars 944, one ends of the three second bars 944 being disposed equidistantly about the central axis of the first bar 943. The other end of the second rod 944 extends toward the inner tube 93. Each inner tube 93 is provided with a guide rail 945 along the direction of the central axis, the length of the guide rail 945 is set according to the length of the inner tube 93, the second rod 944 is of a rectangular structure, and one side of the second rod 944 close to the inner tube 93 is inserted into the guide rail 945 and can move along the guide rail 945.

Referring to fig. 7 and 8, each of the socket pipes 91 is provided with a groove rail 98 and a buckle 95 on a side surface near the outer pipe 92, and an inclined surface 951 is provided on an upper end of the buckle 95. The spring member 96 is disposed in the groove rail 98, the spring member 96 is connected to the buckle 95, and a clamping groove 97 for embedding the buckle 95 is disposed on one side of the outer tube 92, which is close to the insertion tube 91. When the outer body 92 is not placed, half of the snap 95 is located in the grooved rail 98 and the other half of the snap 95 is located outside the grooved rail 98. The both ends of apron 942 are equipped with the end of placing that extends outer body 92, and the end of placing is located the axial outside of joint pipe 91, and draw-in groove 97, buckle 95 and draw-in groove 97 are provided with two sets of and the symmetry sets up in the both sides of horizontal plane.

Referring to fig. 9 and 10, when the outer tube 92 is placed between the adjacent socket pipes 91 from top to bottom, the clip 95 is pushed into the groove rail 98 by the side surface of the outer tube 92 due to the inclined surface 951. When the placing ends on two sides of the cover plate 942 are attached to the upper end of the splicing tube 91, the clamping groove 97 just aligns to the position of the clamping buckle 95, the spring piece 96 resets and pushes out the clamping buckle 95 and embeds the clamping buckle 95 into the clamping groove 97, so that the outer tube 92 is limited and fixed; the cover plate 942 is driven to rotate along the outer wall of the splicing tube 91, the outer tube 92 is fixed due to the limitation of the buckle 95, the cover plate 942 drives the first rod 943 and the second rod 944 to rotate, the second rod 944 drives the inner tube 93 to rotate, and the two inner tubes 93 move towards the corresponding splicing tube 91 while rotating; when the second rod 944 is moved from one end of rail 945 to the other end being abutted, then the inner tube 93 has partially been inside the adapter tube 91, stopping rotation.

The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A lightweight reinforced concrete airtight door is characterized in that: including concrete body (1) and steel frame (2), concrete body (1) is equipped with first side along the direction of self thickness, steel frame (2) are around setting up and connecting in concrete body (1) along first side, the direction along self thickness in concrete body (1) is overlapped in proper order and is equipped with first frame layer (4), second frame layer (5) and third frame layer (6), second frame layer (5) are including a plurality of weight reduction piece (51) that set up side by side, every weight reduction piece (51) are equipped with cavity (52), first frame layer (4) and third frame layer (6) are connected in steel frame (2), adjacent weight reduction piece (51) are equipped with third connecting piece (9) between, third connecting piece (9) are including joint pipe (91) and outer body (92), the lateral wall of joint pipe (91) are located the lateral wall of weight reduction piece (51), the internal diameter hole lateral wall of joint pipe (91) is equipped with the screw thread face, the internal diameter (92) are located adjacent weight reduction piece (92) are located weight reduction piece (92) are equipped with internal diameter (92) drive pipe (94) are equipped with internal diameter (93) between two outer pipe (92) drive body (93), and the one end that drives interior body (93) is followed outer body (92) and is moved to the internal diameter downthehole of joint pipe (91), driving piece (94) are including plate body (941), apron (942) and two first poles (943), the middle-end of apron (942) is located to plate body (941), outer body (92) are located the both sides of plate body (941) and are equipped with two and swivelling joint in plate body (941), two first poles (943) locate the center department of plate body (941) and set up along the center pin direction of interior body (93), every first pole (943) are equipped with second pole (944), interior body (93) are equipped with guide rail (945) that are used for second pole (944) one end embedding, guide rail (945) set up along the center pin direction of interior body (93).

2. A lightweight reinforced concrete containment door as set forth in claim 1, wherein: the first frame layer (4) and the third frame layer (6) all include first reinforcing bar (41) and second reinforcing bar (42) that crisscross setting, first reinforcing bar (41) set up a plurality of and equidistance parallel side by side along second reinforcing bar (42) center pin direction, second reinforcing bar (42) set up a plurality of and equidistance parallel side by side along first reinforcing bar (41) center pin direction, the department of staggering fixed connection of first reinforcing bar (41) and second reinforcing bar (42) just forms a plurality of overlapping portion (43), every the tip of first reinforcing bar (41) and second reinforcing bar (42) all is equipped with kink (44), kink (44) are connected in steel frame (2).

3. A lightweight reinforced concrete containment door as set forth in claim 1, wherein: be equipped with first connecting piece (7) between first frame layer (4) and third frame layer (6), first connecting piece (7) are including tie bar (71) and mounting, the both ends of tie bar (71) all are equipped with crotch portion (711), alternative crotch portion (711) support overlap portion (43) of first frame layer (4), another crotch portion (711) support overlap portion (43) of third frame layer (6) along concrete body (1) thickness direction, every crotch portion (711) are connected through the mounting with overlap portion (43) that corresponds.

4. A lightweight reinforced concrete containment door as set forth in claim 1, wherein: and a second side surface (511) is arranged on one side of each weight reducing piece (51) close to the first frame layer (4), and the second side surface (511) is an arc surface with the middle end protruding towards the direction of the first frame layer (4).

5. A lightweight reinforced concrete containment door as set forth in claim 1, wherein: a first opening end (512) is arranged on one side, close to the third frame layer (6), of each weight-reducing piece (51), and the first opening ends (512) are communicated with the cavity body (52).

6. A lightweight reinforced concrete containment door as set forth in claim 5, wherein: a second connecting piece (8) is arranged between the adjacent weight reducing pieces (51), the second connecting piece (8) comprises a connecting pipe (81), and two ends of the connecting pipe (81) are connected with the weight reducing pieces (51) in a threaded mode.

7. A lightweight reinforced concrete containment door as set forth in claim 1, wherein: the utility model discloses a bayonet lock, including outer body (92) and outer body (91), connect one side that is close to outer body (92) of bayonet lock (91) to be equipped with buckle (95), connect bayonet lock (91) to be equipped with spring piece (96) of connecting in buckle (95), one side that is close to outer body (92) is equipped with draw-in groove (97) that are used for buckle (95) embedding, the both ends of apron (942) are equipped with the end of placing that extends outer body (92), the end of placing is located the axial outside of bayonet lock (91).

8. The method of manufacturing a concrete airtight door according to any one of claims 1 to 7, comprising the steps of: manufacturing a first frame layer (4): the first steel bar (41) and the second steel bar (42) are stacked on the mould in a crossed mode, and the first steel bar (41) and the second steel bar (42) are fixedly connected in a spot welding connection mode; manufacturing a third frame layer (6): the first steel bar (41) and the second steel bar (42) are stacked on the mould in a crossed mode, and the first steel bar (41) and the second steel bar (42) are fixedly connected in a spot welding connection mode; connecting a plurality of weight-reducing pieces (51) side by side into a second frame layer (5); a second frame layer (5) is arranged between the first frame layer (4) and the third frame layer (6), and the first frame layer (4), the second frame layer (5) and the third frame layer (6) are connected by a first connecting piece (7) to form a reinforcing steel bar net rack; placing the manufactured steel bar net rack into a steel frame (2), and fixedly connecting the steel bar net rack with the steel frame (2) in an electric welding connection mode to form a door leaf; placing the door leaf on a concrete vibration platform mould, pouring concrete into the door leaf, and after the concrete is solidified into a concrete body (1), embedding a steel bar net frame into the concrete body (1) to form the airtight door.