Convex-concave type construction joint special for linear accelerator machine room, construction method and machine room

Abstract

The invention relates to a convex-concave type construction joint special for a linear accelerator machine room, a construction method of the convex-concave type construction joint and the machine room. The convex-concave type construction joint comprises a lower side wall body and an upper side wall body, the top face of the lower side wall body upwards forms a convex structure in the self direction, and the upper side wall body is poured above the lower side wall body; a concave structure embedded with the convex structure is formed on the bottom surface of the upper side wall body; one of the water stop baffle and the anti-radiation baffle is arranged on the inner side of the protruding structure, the other one is arranged on the outer side of the protruding structure, the lower ends of the water stop baffle and the anti-radiation baffle are both inserted into the lower side wall body, and the upper ends of the water stop baffle and the anti-radiation baffle are both inserted into the upper side wall body. By means of the convex-concave type construction joints and the water stop steel plates, the water seepage path is lengthened, and the anti-seepage capacity of the wall is improved; the risk of radiation leakage is isolated through the convex-concave construction joints and the anti-radiation lead plates, investment of a formwork supporting system during overall pouring is saved, and meanwhile overall safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of underground structure construction engineering, and in particular to a "convex-concave" type construction joint and a construction method for a linear accelerator machine room, and a machine room. Background Art

[0002] A linear accelerator (LINAC) is an accelerator that uses high-frequency electromagnetic fields to accelerate particles, with the accelerated particles moving in a straight line. LINACs generate significant amounts of radiation during operation, requiring the construction of the equipment room housing them to include radiation shielding and a seamless structure.

[0003] Traditional construction joints are constructed as horizontal lines perpendicular to the side walls, typically located in areas of the structure subject to minimal shear forces. These joints do not require structural waterproofing or radiation protection. The large-scale concrete structure of a linear accelerator room demands flawless construction. Any errors in construction would cost significant manpower, material, and financial resources, while seriously impacting functionality and safety. Therefore, ensuring radiation and waterproofing for this large concrete volume became a key challenge during construction. Summary of the Invention

[0004] In order to solve the problem of radiation protection and waterproofing of large-volume concrete, the present application provides a "convex-concave" type construction joint and construction method for a linear accelerator room, and a room.

[0005] This application provides a "convex-concave" construction joint and construction method for a linear accelerator room, and the room adopts the following technical solutions: In a first aspect, a "convex-concave" construction joint specifically for a linear accelerator room comprises: A lower wall, wherein a convex structure is formed on the top surface of the lower wall along its own direction; an upper wall body cast above the lower wall body, wherein a concave structure is formed on the bottom surface of the upper wall body and is engaged with the convex structure; and The water-stop baffle and the radiation-proof baffle, one of which is arranged on the inner side of the raised structure, and the other is arranged on the outer side of the raised structure. The lower ends of the water-stop baffle and the radiation-proof baffle are both inserted into the lower wall, and the upper ends are both inserted into the upper wall.

[0006] Optionally, from the inner side to the outer side of the lower wall, the raised structure is provided with at least two layers and the two adjacent layers are spaced apart, and the inner and outer side walls of the raised structure are both wavy from bottom to top.

[0007] Optionally, the widths of the upper and lower ends of the protruding structure are gradually increased in the direction toward their respective ends.

[0008] Optionally, the middle portion of the raised structure bulges toward both inner and outer sides to form a bulge.

[0009] Optionally, the corners of the inner and outer side walls of the protruding structure are both smoothly transitioned; and / or The sidewalls of the protruding structures are sprayed with a hydrophobic material; and / or A rough surface is formed on the side wall of the protruding structure.

[0010] Optionally, a plurality of exhaust holes arranged obliquely upward are provided on the upper side wall of the concave portion of the convex structure, and the plurality of exhaust holes are arranged at intervals along the direction of the convex structure; Optionally, the diameter of the exhaust hole is gradually reduced from bottom to top.

[0011] In a second aspect, a linear accelerator room includes a bottom plate, side walls, and a top plate; The bottom plate is integrally formed with a bottom guide wall on its circumference, the top surface of the bottom guide wall is provided with the convex structure, the side wall is cast on the bottom guide wall, the bottom surface of the side wall is provided with the concave structure, and the construction joint is formed between the bottom guide wall and the side wall; The top plate is integrally formed with a top guide wall on its periphery, the top surface of the side wall is provided with the convex structure, the top plate is cast on the side wall, the bottom surface of the top guide wall is provided with the concave structure, and the construction joint is formed between the side wall and the top guide wall; Wherein, the construction joint is the "convex-concave" type construction joint specially used in the linear accelerator room as described above.

[0012] In a third aspect, a method for constructing a "convex-concave" type construction joint specifically for a linear accelerator room comprises the following steps: The formwork is supported and cast into the lower wall, wherein the top surface of the lower wall is provided with a convex structure along its own direction; One of the water-stop baffle and the radiation-proof baffle is arranged on the inner side of the protruding structure, and the other is arranged on the outer side of the protruding structure, and the lower ends of the water-stop baffle and the radiation-proof baffle are both inserted into the lower wall; After the lower wall solidifies, the formwork is removed; A formwork is supported above the lower wall to cast the upper wall. The upper ends of the water-stop baffle and the radiation-proof baffle are embedded in the upper wall. A recessed structure is formed on the bottom surface of the upper wall to fit in with the raised structure.

[0013] Optionally, the inner and outer side walls of the raised structure are both wavy from bottom to top, and a plurality of vent holes arranged obliquely upward are provided on the upper side wall of the inner recess of the raised structure, and the plurality of vent holes are arranged at intervals along the direction of the raised structure; The step of “supporting a formwork to cast an upper side wall above the lower side wall” includes: A formwork is set up to pour concrete slurry on the lower wall to fully wrap the raised structure, a film is covered on the poured concrete slurry, the air in the poured concrete slurry is extracted by a vacuum generator, the film is removed, and the concrete slurry is continued to be poured to form the upper wall.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. By adding water-stop steel plates to the convex-concave construction joints, the water seepage path is lengthened and the wall's anti-seepage capacity is improved. By adding radiation-proof lead plates to the convex-concave construction joints, the risk of radiation leakage is isolated.

[0015] 2. The "convex-concave" construction joints designed specifically for the linear accelerator room in this application save on the formwork support system during overall pouring. In particular, the 3000mm thick formwork support system reduces the spacing between the truss posts from 300×600 to 600×600. This not only reduces the amount of work required for erecting the frame and for the primary and secondary purlins, but also ensures overall safety. During construction, the installation of these "convex-concave" construction joints specifically designed for the linear accelerator room effectively ensures the quality and safety of the linear accelerator room. Furthermore, the simple construction process reduces costs and construction time, resulting in significant results and a high degree of promotional value in the medical field and other related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the "convex-concave" construction joint dedicated to the linear accelerator room in Example 1 of the present application; Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle; Figure 3 This is a structural diagram of a "convex-concave" construction joint dedicated to a linear accelerator room in Example 2 of the present application; Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle; Figure 5 It is a flow chart of the construction method of the "convex-concave" type construction joint specially used in the linear accelerator room in the embodiment of the present application.

[0017] Description of reference numerals: 1. Lower wall; 11. Raised structure; 11a. Bulging part; 11b. Exhaust hole; 2. Upper wall; 3. Water-stop baffle; 4. Radiation-proof baffle; 100. Bottom plate; 110. Bottom guide wall; 200. Side wall; 300. Top plate; 310. Top guide wall. DETAILED DESCRIPTION

[0018] The following will be combined with the Figure 1-5, clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0019] The embodiment of the present application discloses a "convex-concave" type construction joint dedicated to a linear accelerator room and a linear accelerator room. Figure 1 , Figure 1 This is a structural diagram showing the "convex and concave" type construction joint dedicated to the linear accelerator room in Example 1 of the present application. The linear accelerator room is mostly made of large-volume concrete, including a bottom plate 100, side walls 200 and a top plate 300. In order to ensure the safety of the formwork and reduce cracks caused by excessive hydration heat, the bottom plate 100, side walls 200 and top plate 300 are cast separately. Due to the layered casting form, construction joints will be formed at the intersection of the bottom plate 100 and the side wall 200, and at the intersection of the side wall 200 and the top plate 300.

[0020] The bottom plate 100 has an integrally formed bottom guide wall 110 around its periphery. The side walls 200 are cast on the bottom guide wall 110, forming a "convex-concave" construction joint between the bottom guide wall 110 and the side walls 200. The top plate 300 has an integrally formed top guide wall 310 around its periphery. The top plate 300 is cast on the side walls 200, forming a "convex-concave" construction joint between the side walls 200 and the top guide wall 310.

[0021] Concave-convex construction joints are provided at the intersections of the bottom plate 100 and the side wall 200, and the side wall 200 and the top plate 300 to avoid the adverse effects of leaving construction joints. The following describes the convex-concave construction joints specifically designed for a linear accelerator room in accordance with the present invention with reference to the accompanying drawings.

[0022] Since the "convex and concave" construction joint structure is consistent between the bottom guide wall 110 and the side wall 200, and between the side wall 200 and the top guide wall 310, the wall located below is referred to as the lower side wall 1, and the wall located above is referred to as the upper side wall 2 for description. That is, in the relative position relationship between the top plate 300 and the side wall 200, the top plate 300 is located above the side wall 200, the side wall 200 serves as the lower side wall 1, and the top plate 300 serves as the upper side wall 2. In the relative position relationship between the bottom guide wall 110 and the side wall 200, the side wall 200 is located above the bottom guide wall 110, the bottom guide wall 110 serves as the lower side wall 1, and the side wall 200 serves as the upper side wall 2 (such as Figure 2 shown).

[0023] Reference Figure 2The "convex-concave" construction joint designed specifically for the linear accelerator room consists of a lower wall 1 and an upper wall 2. The top surface of the lower wall 1 has a raised structure 11 extending upward along its length. The upper wall 2 is cast above the lower wall 1, and the bottom surface of the upper wall 2 has a recessed structure that fits into the raised structure 11. One of the waterstop baffle 3 and the radiation shield 4 is located inside the raised structure 11, while the other is located outside. The lower ends of both the waterstop baffle 3 and the radiation shield 4 are inserted into the lower wall 1, and the upper ends of both are inserted into the upper wall 2.

[0024] Conventional construction joints pose a risk of leakage. By adding waterstop steel plates to these convex-concave joints, the water seepage path is lengthened, improving the wall's impermeability. By also adding radiation-proof lead plates to these convex-concave joints, the risk of radiation leakage is eliminated.

[0025] In this embodiment, the water-stop baffle 3 is a water-stop steel plate, which is located outside the raised structure 11 and is centrally arranged to isolate water seepage from the outside. The radiation-proof baffle 4 is a radiation-proof lead plate, which is located inside the raised structure 11 and is centrally arranged to isolate radiation leakage from the inside.

[0026] The construction joint between the bottom plate 100 and the side wall 200 is the first "convex-concave" construction joint, which has a higher elevation than the floor slabs around the bottom plate 100. The construction joint between the side wall 200 and the top plate 300 is the second "convex-concave" construction joint, which has a lower elevation than the floor slabs around the top plate 300.

[0027] The bottom guide wall 110 must be higher than the bottom slab 100 and the surrounding floor slab. If there is no floor slab around the bottom slab 100, the bottom guide wall 110 must be at least 300mm higher than the bottom slab 100. If there is a floor slab around the bottom slab 100, the bottom guide wall 110 must be at least 300mm higher than the surrounding floor slab 100. When pouring the side wall 200, a hanging formwork must be installed at the top of the side wall 200. The hanging formwork must be 300mm higher than the lower surface of the top slab 300, forming a second "convex-concave" construction joint.

[0028] The "convex-concave" construction joints specifically designed for linear accelerator rooms in this application save on the formwork support system during overall pouring. In particular, the 3000mm thick formwork support system reduces the spacing between the truss posts from 300×600 to 600×600. This not only reduces the amount of work required for erecting the frame and the main and secondary purlins, but also ensures overall safety. During construction, the installation of "convex-concave" construction joints specifically designed for linear accelerator rooms effectively ensures the quality and safety of the linear accelerator room. Furthermore, the simple construction process reduces costs and construction time, resulting in significant results and a high degree of promotional value in the medical field and other related fields.

[0029] In order to enhance the anti-seepage performance and radiation protection capability of the construction joint, the raised structure 11 is arranged in multiple layers. Figure 3 and Figure 4 , Figure 3 This is a structural diagram of the "convex and concave" type construction joint specially used for the linear accelerator room in Example 2 of the present application. From the inner side to the outer side of the lower wall 1, the raised structure 11 is provided with at least two layers and the two adjacent layers are spaced apart. This not only effectively increases the length of the water seepage path and significantly improves the wall's anti-seepage ability, but also enhances the radiation protection performance through the complexity of the structure, ensuring that the construction joint can reliably isolate the risk of radiation leakage during long-term use.

[0030] The inner and outer walls of the raised structure 11 are wavy from bottom to top. This wavy shape has three advantages: first, the lower wall 1 and the upper wall 2 form a multi-level interlocking structure, which not only increases the bite force of the concrete but also improves the overall strength of the construction joint; second, the wavy, irregular surface shape further extends the water seepage path, significantly enhancing the anti-seepage performance; third, the wavy sidewalls of the raised structure 11 can reduce the flow resistance of the concrete slurry. When pouring concrete slurry on the lower wall 1, it can reduce the retention of bubbles in the vortex zone and improve the density of the concrete; fourth, the wavy structure can absorb vibration energy, reducing the risk of cracks.

[0031] Furthermore, the widths of the upper and lower ends of the raised structure 11 are gradually increased in the direction toward their respective ends, which helps to increase the bite force of the concrete, enhance the sealing of the construction joint, further reduce the risk of leakage, and ensure the stability and reliability of the construction joint in long-term use.

[0032] The central portion of the raised structure 11 rises on both the inner and outer sides to form a bulge 11a. This bulge 11a increases the contact area of the construction joint, significantly enhancing the concrete's bite, thereby effectively improving the joint's impermeability and overall stability. Secondly, the bulge 11a forms symmetrical protrusions, distributing stress and preventing stress concentration, significantly enhancing the joint's crack resistance and overall stability. Thirdly, the bulge 11a creates a honeycomb-like structure around the "convex-concave" construction joint. The outward bulge forms a multi-level honeycomb structure, providing enhanced support and high compressive strength. It evenly distributes loads, improves the joint's overall compressive strength, and reduces cracking. Furthermore, the honeycomb structure not only optimizes stress distribution but also extends the water seepage path through its complex geometry. This design offers significant advantages in impermeability, particularly in environments like linear accelerator rooms, where waterproofing is crucial. It effectively blocks water molecules from penetrating and ensures the long-term reliability of the construction joint.

[0033] The corners of the inner and outer walls of the raised structure 11 are smoothly rounded, which not only reduces stress concentration and the possibility of cracks, but also makes the pouring of concrete slurry smoother, reduces the generation of bubbles, and enhances the density of the concrete. The side walls of the raised structure 11 are sprayed with a hydrophobic material, which can effectively reduce the adhesion of water molecules, block capillary water seepage, and further enhance the anti-seepage performance of the construction joint. The side walls of the raised structure 11 are formed with a rough surface, which increases the adhesion of the concrete slurry and ensures that the construction joint maintains good bonding performance during long-term use.

[0034] A plurality of exhaust holes 11b arranged obliquely upward are provided on the upper side wall of the concave part of the raised structure 11. The plurality of exhaust holes 11b are arranged at intervals along the direction of the raised structure 11, which can effectively discharge internal air during the pouring of concrete slurry, prevent the accumulation of bubbles in the eddy current zone, ensure the density of the concrete, and significantly improve the pouring quality of the construction joint, further enhancing the overall performance and reliability of the construction joint.

[0035] In an alternative embodiment, the diameter of vent 11b gradually decreases from bottom to top. The lower end of vent 11b has a larger inner diameter, which facilitates air from the recessed area of convex structure 11 to more easily enter vent 11b from the bottom. The tapered channel formed by vent 11b accelerates the outward flow of air, more effectively guiding air out and reducing air retention in the channel. The upper end of vent 11b has a smaller inner diameter. The narrow opening increases the inflow resistance of the concrete slurry, reduces the risk of concrete slurry inhalation, and reserves space for gas discharge.

[0036] By optimizing the structure of vent holes 11b, the quality of the construction joint's casting has been further improved, ensuring its compactness and impermeability. Furthermore, the provision of vent holes 11b creates a more pronounced roughness on the surface of raised structure 11, further increasing the concrete's grip once vent holes 11b are filled with concrete slurry and solidify. Furthermore, vent holes 11b are wider on the inside and narrower on the outside. Once the concrete slurry fills vent holes 11b, it forms a further wedge-shaped grip, increasing the concrete's grip and enhancing the overall strength of the construction joint.

[0037] The bulge 11a creates a synergistic effect with the multi-layered raised structure 11, the wavy sidewalls, and the vents 11b. The multi-layered raised structure 11 and the wavy sidewalls further optimize stress distribution, while the vents 11b ensure concrete density. This combination of features ensures that the construction joint exhibits superior performance in terms of impermeability, crack resistance, and radiation protection. This not only addresses stress concentration issues but also significantly improves the joint's impermeability and overall strength, while reducing construction difficulty and costs, providing a reliable guarantee for the high-quality construction of the linear accelerator room.

[0038] The present application also provides a method for constructing a "convex-concave" construction joint specifically for a linear accelerator room, comprising the following steps: The formwork is supported and cast into the lower wall 1, and a convex structure 11 is formed on the top surface of the lower wall 1 along its own direction upwards; One of the water-stop baffle 3 and the radiation-proof baffle 4 is arranged on the inner side of the raised structure 11, and the other is arranged on the outer side of the raised structure 11. The lower ends of the water-stop baffle 3 and the radiation-proof baffle 4 are inserted into the lower wall 1; After the lower wall 1 solidifies, remove the formwork; A formwork is supported above the lower wall 1 to cast the upper wall 2. The upper ends of the water-stop baffle 3 and the radiation-proof baffle 4 are embedded in the upper wall 2. A recessed structure is formed on the bottom surface of the upper wall 2 to fit with the raised structure 11.

[0039] Furthermore, the inner and outer side walls of the raised structure 11 are wavy from bottom to top, and a plurality of vent holes 11b arranged obliquely upward are provided on the upper side wall of the concave portion of the raised structure 11. The plurality of vent holes 11b are arranged at intervals along the direction of the raised structure 11. The step of “supporting the formwork to cast the upper wall 2 above the lower wall 1” includes: The formwork is supported and concrete slurry is poured on the lower wall 1 to fully wrap the raised structure 11. A film is covered on the poured concrete slurry. The air in the poured concrete slurry is extracted using a vacuum generator. The film is removed and the concrete slurry is continued to be poured to form the upper wall 2.

[0040] First, the prefabricated wavy raised structure 11 on the top surface of the lower wall 1 not only increases the concrete engagement area but also extends the water seepage path through its complex geometric shape. Combined with the internal and external placement of the waterstop steel plate and radiation-proof lead sheet, this creates a dual protection system of "physical barrier + structural reinforcement," effectively addressing the industry's challenges of both construction joint leakage and radiation leakage. Second, the inclined vent holes 11b within the recessed portion of the raised structure 11 exhaust air during concrete pouring, preventing honeycombing defects caused by bubble accumulation. The gradually varying apertures prevent slurry leakage and ensure a tight bond between the upper wall 2 and the lower wall 1. Third, the vacuum-assisted pouring process, through film covering and negative pressure extraction, completely eliminates microbubbles within the concrete slurry, significantly improving concrete density and impermeability. This significantly reduces the amount of formwork support required for 3000mm-thick wall construction, optimizing the spacing of the truss rods to 600×600mm, ensuring both construction safety and reducing resource waste. This pouring process significantly improves the overall performance of construction joints while reducing construction difficulty and providing a reliable guarantee for high-quality construction joint completion. Through the deep integration of structural optimization and process innovation, not only has the construction joint been fundamentally transformed from a "weak link" to a "performance enhancer," but systematic design has also reduced construction costs and risks in core areas of medical buildings, providing a replicable, standardized solution for high-precision radiation-proof buildings.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A "convex-concave" construction joint specially designed for a linear accelerator room, characterized in that: include: A lower side wall (1), wherein a convex structure (11) is formed on the top surface of the lower side wall (1) along its own direction upward; An upper wall (2) is cast above the lower wall (1), and a concave structure is formed on the bottom surface of the upper wall (2) and is engaged with the convex structure (11); and A water-stop baffle (3) and a radiation-proof baffle (4), one of which is arranged on the inner side of the protruding structure (11) and the other is arranged on the outer side of the protruding structure (11); the lower ends of the water-stop baffle (3) and the radiation-proof baffle (4) are both inserted into the lower wall (1), and the upper ends of the water-stop baffle (3) and the radiation-proof baffle (4) are both inserted into the upper wall (2).

2. The linear accelerator room-specific "convex-concave" type construction joint according to claim 1, characterized in that: From the inner side to the outer side of the lower wall (1), the raised structure (11) is provided with at least two layers and the adjacent two layers are spaced apart. The inner and outer side walls of the raised structure (11) are both wavy from bottom to top.

3. The special "convex-concave" type construction joint for linear accelerator room according to claim 2, characterized in that: The widths of the upper and lower ends of the protruding structure (11) are gradually increased in the direction toward the respective ends.

4. The special "convex-concave" type construction joint for a linear accelerator room according to claim 3, characterized in that: The middle portion of the raised structure (11) bulges toward both inner and outer sides to form a bulge portion (11a).

5. The linear accelerator room-specific "convex-concave" type construction joint according to any one of claims 2 to 4, characterized in that: The corners of the inner and outer side walls of the protruding structure (11) are both smoothly transitioned; and / or The side walls of the protruding structure (11) are sprayed with a hydrophobic material; and / or A rough surface is formed on the side wall of the protruding structure (11).

6. The linear accelerator room-specific "convex-concave" type construction joint according to any one of claims 2 to 4, characterized in that: A plurality of exhaust holes (11b) arranged obliquely upward are provided on the upper side wall of the concave portion of the protruding structure (11), and the plurality of exhaust holes (11b) are arranged at intervals along the direction of the protruding structure (11).

7. The linear accelerator room-specific "convex-concave" type construction joint according to claim 6, characterized in that: The diameter of the exhaust hole (11b) is gradually reduced from bottom to top.

8. A linear accelerator room, characterized in that: It comprises a bottom plate (100), side walls (200) and a top plate (300); The bottom plate (100) is integrally formed with a bottom guide wall (110) on its circumferential side, the top surface of the bottom guide wall (110) is provided with the convex structure (11), the side wall (200) is cast on the bottom guide wall (110), the bottom surface of the side wall (200) is provided with the concave structure, and the construction joint is formed between the bottom guide wall (110) and the side wall (200); A top guide wall (310) is integrally formed on the circumference of the top plate (300), the top surface of the side wall (200) is provided with the convex structure (11), the top plate (300) is cast on the side wall (200), the bottom surface of the top guide wall (310) is provided with the concave structure, and the construction joint is formed between the side wall (200) and the top guide wall (310); Wherein, the construction joint is a "convex-concave" type construction joint specially used for a linear accelerator room as described in any one of claims 1 to 7.

9. A construction method for a special "convex-concave" type construction joint for a linear accelerator room, characterized in that: The following steps are involved: A formwork is supported to cast the lower wall (1), wherein a convex structure (11) is formed on the top surface of the lower wall (1) along its own direction upward; One of the water-stop baffle (3) and the radiation-proof baffle (4) is arranged on the inner side of the protruding structure (11), and the other is arranged on the outer side of the protruding structure (11), and the lower ends of the water-stop baffle (3) and the radiation-proof baffle (4) are both inserted into the lower wall (1); After the lower wall (1) solidifies, the formwork is removed; A formwork is supported above the lower wall (1) to cast the upper wall (2); the upper ends of the water-stop baffle (3) and the radiation-proof baffle (4) are embedded in the upper wall (2); and a recessed structure is formed on the bottom surface of the upper wall (2) to fit in with the raised structure (11).

10. The construction method of the special "convex-concave" type construction joint for a linear accelerator room according to claim 9, characterized in that: The inner and outer side walls of the protruding structure (11) are both wavy from bottom to top, and a plurality of vent holes (11b) arranged obliquely upward are provided on the upper side wall of the concave portion of the protruding structure (11), and the plurality of vent holes (11b) are arranged at intervals along the direction of the protruding structure (11); The step of "supporting a formwork on the lower wall (1) and casting the upper wall (2)" includes: A formwork is set up to pour concrete slurry onto the lower wall (1) to fully wrap the raised structure (11), a film is covered on the poured concrete slurry, air in the poured concrete slurry is extracted using a vacuum generator, the film is removed, and concrete slurry is continued to be poured to form the upper wall (2).

Images