Shallow-buried large-span civil air defense project main body and reinforcing structure

Abstract

The shallow-buried large-span civil air defense engineering main body comprises a civil air defense main body, splicing blocks cover the outer side of the splicing position of the civil air defense main body, and the top end of the civil air defense main body is provided with a prompting mechanism facilitating prompting of the sedimentation depth. When the device is used, the prompt board is located at the upper end of the ground, then the sleeve block is moved downwards along the prompt board till the sleeve block makes contact with the ground position, then the fixing screw is rotated till the fixing screw extrudes the outer side of the prompt board, and therefore the position of the sleeve block is fixed, and at the moment, the scale line where the ground, the lower end of the sleeve block and the sleeve block are aligned is an initial line; if the civil air defense main body settles, the sleeve block can be driven to synchronously move downwards, so that the prompt board moves downwards, the specific settlement depth can be determined through the scale line and the ground line, and if the adjacent settlement distances have a difference value and the difference value is too large, dislocation occurs between the adjacent civil air defense main bodies, so that timely discovery is facilitated; and subsequent repairing treatment is carried out.

Description

Technical Field

[0001] The present invention relates to the field of civil air defense projects, and in particular to a shallowly buried large-span civil air defense project main body and a reinforcement structure. Background Art

[0002] Civil air defense projects, also known as civil air defense projects, refer to underground protective structures built solely for the purpose of sheltering personnel and supplies, providing command and control, and providing medical assistance during wartime. They also include basements built in conjunction with above-ground structures for air defense during wartime. Civil air defense projects are a crucial component of modern urban defense systems and hold significant national defense significance.

[0003] The existing civil air defense project is located below the ground and has a certain depth. After the construction is completed, the main body of the civil air defense project will be deformed due to the sinking of the land. At the same time, the splicing part of the main body of the civil air defense project will affect the inconsistent sinking and settlement, resulting in the misalignment of the splicing position, thereby allowing the external soil water source to seep into the interior of the civil air defense work body. At the same time, during the settlement, part of the settlement force acts on the top of the main body of the civil air defense project, which can easily cause the top of the main body of the civil air defense project to deform, and part of it will also cause the side of the main body of the civil air defense project to deform, directly affecting the safety of the main body of the civil air defense project. Therefore, a device is urgently needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a shallow-buried, large-span civil air defense engineering main body and reinforcement structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a shallow-buried large-span civil air defense engineering main body, comprising a civil air defense main body, wherein a splicing block is sleeved on the outer side of the civil air defense main body, and the splicing block covers the outer side of the splicing position of the civil air defense main body. When in use, the civil air defense main bodies are spliced together, and then the splicing block is placed on the outer side of the splicing position of the civil air defense main body, and the splicing seam of the civil air defense main body is located at the center of the splicing block. Bolts are then passed through the splicing block to penetrate into the interior of the civil air defense main body to reinforce the splicing position of the civil air defense main body and prevent the splicing position from being dislocated due to settlement. A prompt mechanism for conveniently prompting the settlement depth is provided on the top of the civil air defense main body;

[0006] The prompt mechanism includes a fixed block, a prompt plate, a sleeve block and a fixed screw. The fixed block is fixed at the top position of the civil air defense body, the prompt plate is fixed at the top position of the fixed block, the top of the prompt plate is located at the upper end of the ground, the outer side of the prompt plate is engraved with a scale line, the sleeve block is movably sleeved on the outer side of the prompt plate, the fixed screw is inserted through a thread and is arranged on one side of the sleeve block, and a rotating block is fixed on one side of the fixed screw for facilitating the rotation of the fixed screw. When in use, the prompt plate is located at the upper end of the ground, and then the sleeve block is moved downward along the prompt plate until the sleeve block contacts the ground position, and then the fixed screw is rotated until the fixed screw squeezes the outer side of the prompt plate, thereby fixing the sleeve block position, and at this time, the scale line where the ground, the lower end of the sleeve block and the sleeve block are aligned is the initial line. When the ground settles, if the civil air defense body settles, the sleeve block will be driven to move downward synchronously, causing the prompt plate to move downward. The specific settlement depth can be determined by the scale line and the ground line, and if there is a difference in adjacent settlement distances, and if the difference is too large, it means that there is a misalignment between adjacent civil air defense bodies, which is convenient for timely discovery and subsequent repair processing.

[0007] A reinforcement structure for a shallowly buried, large-span civil air defense project body, comprising a reinforcement plate, a crossbeam, a column and a base plate, wherein the reinforcement plate is fixed on the inner wall of the civil air defense body, and the reinforcement plate consists of a central plate body and two integrally formed plate bodies on both sides, and an angle is formed between the central plate body and the two side plates, which is an obtuse angle, so that it is convenient to stick closely to the inner wall of the civil air defense body, the crossbeam is fixed on the top of the civil air defense body, and the column is fixed on the bottom end of the crossbeam, so as to facilitate auxiliary support and reinforcement of the crossbeam, the base plate is fixed on the inner wall of the civil air defense body, and the bottom end of the column is fixed on the base plate, and a first warning mechanism for conveniently warning the degree of deformation of the civil air defense body is provided on the base plate, and a second warning mechanism for conveniently warning the degree of deformation of the beam is provided at the center position inside the crossbeam.

[0008] Preferably, the first warning mechanism includes a first hollow rod, an extrusion rod, a first piston block, a second hollow rod, a connecting pipe, a second piston block, a first conductive block, a limiting block, a second conductive block, a first alarm and a first battery, the first hollow rod is fixed at the top position of the bottom plate, the top end of the extrusion rod is fixed at the bottom end of the crossbeam, the lower end of the extrusion rod is slidably arranged inside the first hollow rod, the first piston block is adhesively fixed to the lower end of the extrusion rod, the second hollow rod is fixed at the top position of the bottom plate, the connecting pipe is fixed between the first hollow rod and the second hollow rod, the limiting block is fixed on the inner side wall of the second hollow rod, the second piston block is slidably arranged inside the second hollow rod, the second piston block is located at the upper end of the limiting block, the outer side of the second piston block and the inner side wall of the second hollow rod are in active sealing contact, the first conductive block is embedded and fixed at the top position of the second piston block, the The second conductive block is embedded and fixed on the inner side of the second hollow rod. There are two second conductive blocks, which are symmetrically installed on both sides of the second hollow rod. The inner diameter of the second hollow rod is smaller than that of the first hollow rod. The first alarm is fixed on the outside of the first hollow rod, and the first battery is fixed on the outside of the first hollow rod. When in use, the civil defense body is subjected to force, and the crossbeam is reinforced by the column. When the column is deformed and bent, the extrusion rod drives the first piston block to move downward along the inside of the first hollow rod, and injects the air inside the first hollow rod into the inside of the second hollow rod through the connecting pipe. Since the inner diameter of the second hollow rod is smaller than that of the first hollow rod, the second piston block inside the second hollow rod moves upward along the second hollow rod until the first conductive block contacts the second conductive block, so that the first alarm is energized and started, thereby performing an alarm, prompting that the deformation is too large, and the alarm is convenient for timely processing.

[0009] Preferably, the second warning mechanism includes a slot body, a fixing rod, a cavity, a fixing tube, a third conductive block, a pad, a hollow glass block, a second battery, a second alarm and a prompt light, the slot body is opened at the center of the beam, the fixing rod is fixed inside the slot body, the cavity is opened at the center of the fixing rod, the pad is fixed at the bottom end of the cavity, the hollow glass block is placed on the top of the pad, the hollow glass block is filled with a conductive liquid, the fixing tube is embedded and fixed at the center of the bottom end of the fixing rod, the second battery is fixed outside the fixing tube, the third conductive block is embedded and fixed on the inner wall of the fixing tube, and the There are two third conductive blocks, which are symmetrically installed on both sides of the fixed tube. The second alarm is fixed on the outside of the pipeline, and the warning light is embedded in the lower end of the second alarm. The warning light is connected in series with the second alarm. When the beam is deformed during use, the fixed rod is deformed, causing the cavity inside the fixed rod to deform until the hollow glass block inside the cavity is squeezed until the hollow glass block is broken, causing the conductive liquid to flow out and flow into the fixed tube, so that the third conductive block is connected, so that the second alarm is activated and the warning light is activated at the same time, which makes it easy to determine the deformation position, thereby facilitating early warning of the deformation of the beam.

[0010] Preferably, there is movable sealing contact between the outer side of the first piston block and the inner side wall of the first hollow rod.

[0011] Preferably, two limit blocks are provided and symmetrically installed at two sides of the second hollow rod.

[0012] Preferably, the first battery, the first alarm and the second conductive block are electrically connected, and a short circuit is formed between the second conductive blocks.

[0013] Preferably, two pads are provided and symmetrically installed on both sides of the bottom end inside the cavity.

[0014] Preferably, the second battery, the second alarm and the third conductive block are electrically connected, and a short circuit is formed at the position of the third conductive block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is in use, the prompt plate is located at the upper end of the ground, and then the sleeve block is moved downward along the prompt plate until the sleeve block contacts the ground. Then, the fixing screw is rotated until the fixing screw squeezes the outer side of the prompt plate, thereby fixing the sleeve block position. At this time, the ground, the lower end of the sleeve block and the scale line aligned with the sleeve block are the initial lines. When the ground settles, if the civil air defense body settles, it will drive the sleeve block to move downward synchronously, causing the prompt plate to move downward. The specific settlement depth can be determined by the scale line and the ground line. If there is a difference in adjacent settlement distances, and the difference is too large, it means that there is a misalignment between adjacent civil air defense bodies, which is convenient for timely discovery and subsequent repair processing.

[0017] 2. When the present invention is in use, the civil air defense main body is subjected to force, and the crossbeam is reinforced by the column. When the column is deformed and bent, the extrusion rod drives the first piston block to move downward along the inside of the first hollow rod, and the air inside the first hollow rod is injected into the inside of the second hollow rod through the connecting pipe. Since the inner diameter of the second hollow rod is smaller than that of the first hollow rod, the second piston block inside the second hollow rod moves upward along the second hollow rod until the first conductive block contacts the second conductive block, so that the first alarm is powered on and activated, thereby sounding the alarm, indicating that the deformation is too large, and facilitating timely processing;

[0018] 3. When the crossbeam is deformed during use, the fixing rod is deformed, causing the cavity inside the fixing rod to deform until the hollow glass block inside the cavity is squeezed and broken, causing the conductive liquid to flow out and into the fixed tube, making the third conductive block connected. This activates the second alarm and the warning light at the same time, making it easy to determine the deformation position, thereby facilitating early warning of the deformation of the crossbeam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of a reinforcement structure for a shallow-buried, large-span civil air defense project main body according to the present invention;

[0021] Figure 3 This is a first cross-sectional view of a reinforcement structure of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0022] Figure 4 This is a second cross-sectional view of a reinforcement structure of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0023] Figure 5 This is an enlarged schematic diagram of a reinforcement structure A of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0024] Figure 6This is an enlarged schematic diagram of a reinforcement structure B of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0025] Figure 7 This is an enlarged schematic diagram of a reinforcement structure C of a shallow-buried, large-span civil air defense project main body according to the present invention;

[0026] Figure 8 It is an enlarged schematic diagram of the reinforcement structure D of the main body of a shallow-buried and large-span civil air defense project according to the present invention.

[0027] In the figure: 1. Civil air defense main body; 2. Splicing block; 3. Fixed block; 4. Prompt plate; 5. Sleeve block; 6. Fixed screw; 7. Reinforcement plate; 8. Crossbeam; 9. Trough; 10. Fixed rod; 11. Cavity; 12. Pad; 13. Hollow glass block; 14. Fixed tube; 15. Second battery; 16. Third conductive block; 17. Second alarm; 18. Prompt light; 19. Column; 20. Extrusion rod; 21. First piston block; 22. First hollow rod; 23. Bottom plate; 24. Connecting tube; 25. Second hollow rod; 26. Limit block; 27. Second piston block; 28. First conductive block; 29. Second conductive block; 30. First alarm; 31. First battery. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-8 The present invention provides a technical solution: a shallow-buried large-span civil air defense project body, comprising a civil air defense body 1, wherein a splicing block 2 is sleeved on the outer side of the civil air defense body 1, and the splicing block 2 covers the outer side of the splicing position of the civil air defense body 1. When in use, the civil air defense bodies 1 are spliced together, and then the splicing block 2 is placed on the outer side of the splicing position of the civil air defense body 1, and the splicing seam of the civil air defense body 1 is located at the center of the splicing block 2. Bolts are then passed through the splicing block 2 to penetrate into the interior of the civil air defense body 1 to reinforce the splicing position of the civil air defense body 1 and prevent the splicing position from being dislocated due to settlement. A prompt mechanism for conveniently prompting the settlement depth is provided on the top of the civil air defense body 1;

[0030] The prompt mechanism includes a fixed block 3, a prompt plate 4, a sleeve block 5 and a fixed screw 6. The fixed block 3 is fixed to the top position of the civil defense main body 1 by bolts. The prompt plate 4 is welded and fixed to the top position of the fixed block 3. The top of the prompt plate 4 is located at the upper end of the ground. The outer side of the prompt plate 4 is engraved with a scale line. The sleeve block 5 is movably sleeved on the outer side of the prompt plate 4. The fixed screw 6 is arranged on one side of the sleeve block 5 through a threaded insertion. A rotating block for facilitating the rotation of the fixed screw 6 is welded and fixed on one side of the fixed screw 6. When in use, the prompt plate 4 is located at the upper end of the ground and then moves downward along the prompt plate 4. The block 5 is mounted on the ground until the block 5 contacts the ground, and then the fixing screw 6 is rotated until the fixing screw 6 squeezes the outside of the prompt plate 4, thereby fixing the position of the block 5. At this time, the scale line where the ground, the lower end of the block 5 and the block 5 are aligned is the initial line. When the ground settles, if the civil air defense main body 1 sinks, it will drive the block 5 to move downward synchronously, causing the prompt plate 4 to move downward. The specific settlement depth can be determined by the scale line and the ground line, and if there is a difference between adjacent settlement distances, and the difference is too large, it means that there is a misalignment between adjacent civil air defense main bodies 1, which is convenient for timely discovery and subsequent repair processing.

[0031] A reinforcement structure for a shallow-buried, large-span civil air defense project body, comprising a reinforcement plate 7, a crossbeam 8, a column 19 and a bottom plate 23. The reinforcement plate 7 is fixed to the inner wall of the civil air defense body 1 by bolts. The reinforcement plate 7 consists of a central plate body and two integrally formed plate bodies on both sides. There is an angle between the central plate body and the two side plates, which is an obtuse angle, so that it is convenient to fit tightly against the inner wall of the civil air defense body 1. The crossbeam 8 is fixed to the top of the civil air defense body 1 by bolts, and the column 19 is fixed to the bottom end of the crossbeam 8 by bolts, so as to facilitate auxiliary support and reinforcement of the crossbeam 8. The bottom plate 23 is welded and fixed to the inner wall of the civil air defense body 1, and the bottom end of the column 19 is fixed to the bottom plate 23 by bolts. A first warning mechanism is provided on the bottom plate 23 for conveniently warning the degree of deformation of the civil air defense body 1, and a second warning mechanism is provided at the center position inside the crossbeam 8 for conveniently warning the degree of deformation of the crossbeam 8.

[0032] The first warning mechanism includes a first hollow rod 22, an extrusion rod 20, a first piston block 21, a second hollow rod 25, a connecting pipe 24, a second piston block 27, a first conductive block 28, a limit block 26, a second conductive block 29, a first alarm 30 and a first battery 31. The first hollow rod 22 is fixed to the top position of the base plate 23 by bolts, the top of the extrusion rod 20 is fixed to the bottom end of the crossbeam 8 by bolts, the lower end of the extrusion rod 20 is slidably arranged inside the first hollow rod 22, the first piston block 21 is adhesively fixed to the lower end of the extrusion rod 20, and the outer side of the first piston block 21 is connected to the inner wall of the first hollow rod 22. There is a movable sealing contact between them, the second hollow rod 25 is fixed to the top position of the bottom plate 23 by bolts, the connecting pipe 24 is welded and fixed between the first hollow rod 22 and the second hollow rod 25, the limit block 26 is welded and fixed to the inner wall of the second hollow rod 25, and there are two limit blocks 26, which are symmetrically installed on both sides of the interior of the second hollow rod 25. The second piston block 27 is slidably arranged inside the second hollow rod 25, and the second piston block 27 is located at the upper end of the limit block 26. There is a movable sealing contact between the outer side of the second piston block 27 and the inner wall of the second hollow rod 25, and the first conductive block 28 is embedded Fixed at the top position of the second piston block 27, the second conductive block 29 is embedded and fixed on the inner side of the second hollow rod 25, two second conductive blocks 29 are provided, which are symmetrically installed on both sides of the second hollow rod 25, the inner diameter of the second hollow rod 25 is smaller than the inner diameter of the first hollow rod 22, the first alarm 30 is fixed to the outside of the first hollow rod 22 by bolts, the first battery 31 is fixed to the outside of the first hollow rod 22 by bolts, the first battery 31, the first alarm 30 and the second conductive block 29 are electrically connected, and a short circuit is formed between the second conductive blocks 29. When in use, the civil defense main body 1 is subjected to force, The crossbeam 8 is reinforced by the column 19. When the column 19 is deformed and bent, the extrusion rod 20 drives the first piston block 21 to move downward along the inside of the first hollow rod 22, and injects the air inside the first hollow rod 22 into the inside of the second hollow rod 25 through the connecting pipe 24. Since the inner diameter of the second hollow rod 25 is smaller than the inner diameter of the first hollow rod 22, the second piston block 27 inside the second hollow rod 25 moves upward along the second hollow rod 25 until the first conductive block 28 contacts the second conductive block 29. In this way, the first alarm 30 is energized and activated, thereby performing an alarm, indicating that the deformation is too large, and the alarm is issued for convenient and timely processing.

[0033] The second warning mechanism includes a slot body 9, a fixing rod 10, a cavity 11, a fixing tube 14, a third conductive block 16, a pad 12, a hollow glass block 13, a second battery 15, a second alarm 17 and a prompt light 18. The slot body 9 is opened at the center of the crossbeam 8, the fixing rod 10 is welded and fixed to the inner side of the slot body 9, the cavity 11 is opened at the center of the fixing rod 10, the pad 12 is welded and fixed to the bottom end of the cavity 11, two pads 12 are provided, which are symmetrically installed on both sides of the bottom end of the cavity 11, the hollow glass block 13 is placed on the top of the pad 12, and the hollow glass block 13 is filled with a conductive liquid. The fixing tube 14 is embedded and fixed at the center of the bottom end of the fixing rod 10, the second battery 15 is fixed to the outside of the fixing tube 14 by bolts, the third conductive block 16 is embedded and fixed on the inner wall of the fixing tube 14, and the third conductive block There are two 16, which are symmetrically installed on both sides of the fixed tube 14. The second alarm 17 is fixed to the outside of the pipeline 14 by bolts. The second battery 15, the second alarm 17 and the third conductive block 16 are electrically connected, and a short circuit is formed at the position of the third conductive block 16. The warning light 18 is embedded and fixed at the lower end of the second alarm 17. The warning light 18 is connected in series with the second alarm 17. When the beam 8 is deformed during use, the fixed rod 10 is deformed, causing the cavity 11 inside the fixed rod 10 to deform until the hollow glass block 13 inside the cavity 11 is squeezed and the hollow glass block 13 is broken, causing the conductive liquid to flow out and flow into the fixed tube 14, so that the third conductive block 16 is connected, so that the second alarm 17 is activated and the warning light 18 is activated at the same time, which is convenient for determining the deformation position, thereby facilitating early warning of the deformation of the beam 8.

[0034] When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed, and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed. When the ground is subsided, the block 5 is pushed down and the position of the prompt plate 4 is fixed The air inside a hollow rod 22 is injected into the second hollow rod 25 through the connecting tube 24. Since the inner diameter of the second hollow rod 25 is smaller than that of the first hollow rod 22, the second piston block 27 inside the second hollow rod 25 moves upward along the second hollow rod 25 until the first conductive block 28 contacts the second conductive block 29, so that the first alarm 30 is powered on and activated, thereby performing an alarm, indicating that the deformation is too large, and the alarm is issued for convenient and timely processing; when the beam 8 is deformed during use, the fixed rod 10 is deformed, causing the cavity 11 inside the fixed rod 10 to deform until the hollow glass block 13 inside the cavity 11 is squeezed until the hollow glass block 13 is broken, causing the conductive liquid to flow out and flow into the fixed tube 14, so that the third conductive block 16 is connected, so that the second alarm 17 is activated and the prompt light 18 is activated at the same time, which is convenient for determining the deformation position, thereby facilitating early warning of the deformation of the beam 8.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A shallow-buried, large-span civil air defense project main body, comprising a civil air defense main body (1), characterized in that: The outer side of the civil air defense main body (1) is sleeved with a splicing block (2), the splicing block (2) covers the outer side of the splicing position of the civil air defense main body (1), and the top of the civil air defense main body (1) is provided with a prompt mechanism for conveniently prompting the settlement depth; The prompt mechanism comprises a fixed block (3), a prompt plate (4), a sleeve block (5) and a fixed screw (6); the fixed block (3) is fixed at the top position of the civil air defense main body (1); the prompt plate (4) is fixed at the top position of the fixed block (3); the top of the prompt plate (4) is located above the ground; the outer side of the prompt plate (4) is engraved with a scale line; the sleeve block (5) is movably sleeved on the outer side of the prompt plate (4); the fixed screw (6) is arranged on one side of the sleeve block (5) through a thread; and a rotating block for conveniently rotating the fixed screw (6) is fixed on one side of the fixed screw (6).

2. A reinforcement structure for a shallow-buried, large-span civil air defense project main body, comprising a reinforcement plate (7), a crossbeam (8), a column (19) and a bottom plate (23), characterized in that: The reinforcement plate (7) is fixed on the inner wall of the civil air defense main body (1), and the reinforcement plate (7) is composed of a central plate body and two integrally formed plate bodies on both sides. There is an angle between the central plate body and the two side plate bodies, and the angle is an obtuse angle, which is convenient for being closely attached to the inner wall of the civil air defense main body (1). The crossbeam (8) is fixed on the top of the civil air defense main body (1), and the column (19) is fixed on the bottom end of the crossbeam (8) to facilitate auxiliary support and reinforcement of the crossbeam (8). The bottom plate (23) is fixed on the inner wall of the civil air defense main body (1), and the bottom end of the column (19) is fixed on the bottom plate (23). A first warning mechanism for conveniently warning the degree of deformation of the civil air defense main body (1) is provided on the bottom plate (23), and a second warning mechanism for conveniently warning the degree of deformation of the crossbeam (8) is provided at the center position inside the crossbeam (8).

3. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 2 is characterized by: The first warning mechanism comprises a first hollow rod (22), an extrusion rod (20), a first piston block (21), a second hollow rod (25), a connecting pipe (24), a second piston block (27), a first conductive block (28), a limit block (26), a second conductive block (29), a first alarm (30) and a first battery (31), wherein the first hollow rod (22) is fixed at the top end of the bottom plate (23), the top end of the extrusion rod (20) is fixed at the bottom end of the crossbeam (8), the lower end of the extrusion rod (20) is slidably arranged inside the first hollow rod (22), the first piston block (21) is adhesively fixed to the lower end of the extrusion rod (20), the second hollow rod (25) is fixed at the top end of the bottom plate (23), the connecting pipe (24) is fixed between the first hollow rod (22) and the second hollow rod (25), the limit block (26 ... 6) is fixed on the inner wall of the second hollow rod (25), the second piston block (27) is slidably arranged inside the second hollow rod (25), the second piston block (27) is located at the upper end of the limit block (26), the outer side of the second piston block (27) and the inner wall of the second hollow rod (25) are in movable sealing contact, the first conductive block (28) is embedded and fixed at the top position of the second piston block (27), the second conductive block (29) is embedded and fixed inside the second hollow rod (25), two second conductive blocks (29) are provided, and are symmetrically installed at both sides of the second hollow rod (25), the inner diameter of the second hollow rod (25) is smaller than the inner diameter of the first hollow rod (22), the first alarm (30) is fixed on the outside of the first hollow rod (22), and the first storage battery (31) is fixed on the outside of the first hollow rod (22).

4. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 3 is characterized by: The second warning mechanism comprises a slot body (9), a fixing rod (10), a cavity (11), a fixing tube (14), a third conductive block (16), a pad (12), a glass hollow block (13), a second battery (15), a second alarm (17) and a warning light (18), wherein the slot body (9) is opened at the center of the crossbeam (8), the fixing rod (10) is fixed on the inner side of the slot body (9), the cavity (11) is opened at the center of the fixing rod (10), the pad (12) is fixed at the bottom end of the cavity (11), the glass hollow block (13) is placed on the top end of the pad (12), and the glass The hollow block (13) is filled with a conductive liquid. The fixed tube (14) is embedded and fixed at the center of the bottom end of the fixed rod (10). The second storage battery (15) is fixed on the outside of the fixed tube (14). The third conductive block (16) is embedded and fixed on the inner wall of the fixed tube (14). Two third conductive blocks (16) are provided and symmetrically installed at two sides of the fixed tube (14). The second alarm (17) is fixed on the outside of the pipeline (14). The warning light (18) is embedded and fixed at the lower end of the second alarm (17). The warning light (18) is connected in series with the second alarm (17).

5. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 4 is characterized by: There is movable sealing contact between the outer side of the first piston block (21) and the inner side wall of the first hollow rod (22).

6. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 5 is characterized by: Two limit blocks (26) are provided and symmetrically installed at two sides inside the second hollow rod (25).

7. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 6 is characterized by: The first storage battery (31), the first alarm (30) and the second conductive block (29) are electrically connected, and a short circuit is formed between the second conductive blocks (29).

8. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 7 is characterized by: Two pads (12) are provided and symmetrically mounted on both sides of the bottom end inside the cavity (11).

9. The reinforcement structure of a shallow-buried, large-span civil air defense project main body according to claim 8, characterized in that: The second storage battery (15), the second alarm (17) and the third conductive block (16) are electrically connected, and a short circuit is formed at the position of the third conductive block (16).

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