Engineering implementation method of super-long reinforced concrete radiation-proof thick wall group structure

Abstract

The present application relates to the field of radiation protection construction engineering, and discloses a kind of engineering implementation method of super-long reinforced concrete radiation protection thick wall group structure, engineering design: the traditional method of super-long thick wall group structure overall stress is changed into first disassembled into by reinforcing small structure stress, cavity is filled, then form large structure, overall stress method;Construction steps: construction bottom plate;Construction outer wall and the stress wall body unit of small structure, and water storage maintenance is formed in the gap cavity between small structure unit, detects crack, if there is, repair;Empty water, fill the gap cavity by skip method;Construction top plate, form a whole;The present application has the advantages: alleviate the self-weight faced in traditional construction, difficult formwork and hydration heat high easy cracking;It is convenient to maintain, detect and repair the main stress part;Long radiation maze is formed by staggered construction joint, and the effect of radiation protection is enhanced;The overall formed by small structure and gap cavity reduces the amount of reinforcement and cost, facilitates pipeline and process pre-burying, and enhances waterproof reliability.

Description

Technical Field

[0001] This invention relates to the field of radiation protection building engineering, and in particular to an engineering implementation method for an ultra-long reinforced concrete radiation protection thick wall group structure. Background Technology

[0002] Research facilities and particle therapy devices that emit ionizing radiation typically concentrate their radiation-related functions due to radiation protection requirements. These facilities are often surrounded by thick walls (radiation shielding walls of various thicknesses, such as 1.5m, 2m, 2.6m, 3.9m, and 4.3m) and thick reinforced concrete structures to shield the radiation source. This ensures that the radiation dose attenuates to within safe limits after passing through the shield. Some projects even require long radiation mazes or, to avoid weakening the shielding effect through construction joints, require ultra-long, thick wall complexes constructed in a single, continuous process. This results in these functional buildings needing large volumes of ultra-long, ultra-thick concrete with minimal temporary joints. Furthermore, these structures are prone to cracking under traditional construction methods, compromising waterproofing of radiation-related spaces. There is a risk of groundwater entering and activating the radiation-related space, and damage to expensive, high-power-consuming precision equipment within the space.

[0003] This type of ultra-long, large-volume, thick concrete wall structure presents the following technical challenges in engineering:

[0004] 1. The hydration temperature of ultra-thick concrete is high at the center and difficult to dissipate, while the surface temperature of concrete is low and there is temperature exchange with the environment. Therefore, a large temperature difference is formed between the inside and outside of the concrete component, which increases the difficulty of temperature control and curing of concrete, makes it very easy to generate temperature and shrinkage cracks, causes the closed loop of the radiation protection system to fail, and even causes water leakage accidents, increasing the risk of environmental water entering the radiation-contaminated space and being activated and contaminated.

[0005] 2. Large-volume concrete components that are too long (exceeding the length limits of existing specifications) or that are not allowed to have post-pouring strips or post-pouring construction joints due to radiation shielding requirements, present significant challenges during construction. These include large volumes of concrete to be poured at one time and heavy structural support structures. Examples include spaces with huge areas and heights of 20 to 30 meters, such as the Gantry treatment room for particle therapy, where the vertical support structure is too large to support the weight of the upper cast-in-place concrete. Another example is a treatment room with a roof slab thickness of over 2 meters, which presents significant challenges for the construction support structure. These construction difficulties increase the risk of accidents and pose high quality and safety risks.

[0006] 3. If a through crack appears in this ultra-long and ultra-thick integral structure, it is difficult to detect in the early stage. If it is discovered in the later stage of use, remedial work will be carried out, resulting in huge economic costs and greatly delaying the construction progress and usage plan.

[0007] 4. In the existing conventional concrete construction process (the pouring sequence is: base slab, thick wall, top slab, etc.), through construction joints are inevitably formed, and there is a lack of radiation protection mazes, which causes difficulties in physical radiation protection. In engineering, it is necessary to add extra measures to make up for the lack of protection strength.

[0008] 5. Due to the large thickness of the radiation shielding wall, in order to meet the reinforcement ratio requirements of the current specifications, the amount of steel reinforcement in the thick wall and thick plate structure is large and the arrangement density is high. It is difficult for equipment and process professionals to reserve and embed pipelines and various holes. Concrete pouring and vibration are difficult, and the accuracy requirements of high-precision embedded parts cannot be guaranteed during the construction vibration process.

[0009] For ultra-long and ultra-thick reinforced concrete structures, preventing cracks and water leakage has always been a challenge in concrete science. Various measures and methods in the industry can only mitigate the impact. The most effective approach is to avoid such structures as much as possible or take measures to dissipate their effects. Summary of the Invention

[0010] The purpose of this invention is to provide an engineering implementation method for an ultra-long reinforced concrete radiation protection thick wall group structure that meets the requirements of radiation protection design integrity and effectiveness, reduces the cost of steel reinforcement engineering, has reasonable stress distribution, is easy to construct, facilitates pipeline and process pre-embedding, and is conducive to ensuring waterproof safety.

[0011] To achieve the above objectives, this invention provides an engineering implementation method for an ultra-long reinforced concrete radiation-shielding thick wall group structure, including design steps and construction steps.

[0012] The design process includes the following steps:

[0013] Design Step 1: Decompose the ultra-long reinforced concrete radiation shielding thick wall group structure into a reinforced concrete thick base slab, several spaced radiation shielding room load-bearing wall units, load-bearing outer walls, a top slab, and filling material in the gaps between the top slab, load-bearing outer walls, reinforced concrete thick base slab and the load-bearing wall units of the radiation shielding room to form gap cavities.

[0014] Design Step 2: Conduct stress design on the load-bearing wall units of the radiation protection room to ensure that each load-bearing wall unit of the radiation protection room can independently bear the self-weight of the filling material and the load during construction.

[0015] Design step 3: Perform stress design on the reinforced concrete thick base slab, load-bearing external wall and top slab, and perform calculation and analysis on the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group to ensure that the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group meets the stress performance design requirements.

[0016] The construction steps include the following:

[0017] Construction Step 1: Construct the aforementioned reinforced concrete thick base slab;

[0018] Construction Step 2: Construct all the load-bearing wall units and the load-bearing outer walls of the radiation shielding rooms on the reinforced concrete thick base slab. The load-bearing outer walls surround the outer perimeter of the reinforced concrete thick base slab. Wall gaps are provided between the load-bearing wall units of the radiation shielding rooms adjacent to the load-bearing outer walls and between two adjacent load-bearing wall units of the radiation shielding rooms. All the wall gaps form gap cavities. The height of the load-bearing outer walls is higher than the height of the load-bearing wall units of the radiation shielding rooms. Both the load-bearing wall units of the radiation shielding rooms and the load-bearing outer walls are reinforced concrete structures. The load-bearing wall units of the radiation shielding rooms include four side walls and a top slab.

[0019] Construction step 3: Fill the gap cavity formed by the load-bearing outer wall and the reinforced concrete base plate with water for water storage and curing, then check the cracks and leakage of the load-bearing wall, the load-bearing outer wall and the base plate. After the inspection is completed, drain the water and repair the cracks and leakage.

[0020] Construction step 4: The cavity formed by the load-bearing outer wall and the reinforced concrete thick base plate is filled with filler material using the skip-fill method. The filler material includes a first filler layer filled in the gap between the walls and a second filler layer connected above the first filler layer. The second filler layer extends to the top of the radiation shielding room.

[0021] Construction step 5: Construct the top slab. The outer perimeter of the top slab is connected to the top of the load-bearing exterior wall. The top slab is a reinforced concrete structure.

[0022] As a preferred embodiment of the present invention, in the construction step 1, the reinforced concrete thick base slab is constructed using the skip-section method. The reinforced concrete thick base slab includes multiple base slab units, and water-stop steel plates or water-stop strips are provided on the skip-section construction joints between adjacent base slab units.

[0023] As a preferred embodiment of the present invention, in the construction step 1, the reinforced concrete thick base plate is provided with side wall guide walls that cooperate with the four side walls and external wall guide walls that cooperate with the load-bearing external walls.

[0024] As a preferred embodiment of the present invention, in the construction step 2, the construction joint between the four side walls and the side wall guide wall is provided with a water-stop steel plate or water-stop strip, and the construction joint between the outer wall guide wall and the load-bearing outer wall is provided with a water-stop steel plate or water-stop strip.

[0025] As a preferred embodiment of the present invention, the construction joints between the four side walls and the guide walls of the adjacent radiation shielding rooms are staggered.

[0026] As a preferred embodiment of the present invention, in the construction step 3, after the inspection and repair are completed, a penetrating crystalline waterproof coating is applied to the inner side of the stressed exterior wall, the outer side of the stressed wall, and the top surface of the base plate.

[0027] As a preferred embodiment of the present invention, in the construction step 3, water storage and curing are carried out until the design age when the load-bearing wall and the load-bearing outer wall reach the final setting time, and the water level is higher than the height of the top slab.

[0028] As a preferred embodiment of the present invention, the filler is a radiation shielding material.

[0029] As a preferred embodiment of the present invention, the radiation shielding material is concrete.

[0030] As a preferred embodiment of the present invention, the end of the second filler layer is provided with a tongue and groove joint.

[0031] Compared with existing technologies, the engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure of this invention has the following advantages:

[0032] This invention, based on shielding and radiation protection requirements, stress requirements, and construction requirements, decomposes the overall large structure of an ultra-long reinforced concrete radiation-proof thick wall group into several independently stressed and reasonably sized radiation-proof room stress-bearing wall units (small structures), reinforced concrete thick base slabs, roof slabs, stress-bearing outer walls, and filling materials. This improves upon the traditional method of one-time construction by decomposing the structure into separately formed reinforced small structures and unreinforced filling materials in secondary gaps and cavities. This allows the overall large structure of the ultra-long reinforced concrete radiation-proof thick wall group to bear the overall stress. This change in stress-bearing units reduces the amount of steel reinforcement and its density, significantly decreasing the amount of steel used. By reducing the thickness and length of each poured wall and slab, the difficulty of concrete pouring and temperature-controlled curing is reduced, lowering the risk of cracking in large-volume concrete thick walls. It also avoids the difficulties in preparing and constructing ultra-long concrete structures due to the inability to set construction joints. Furthermore, it utilizes the stress-bearing capacity of the radiation-proof room... The wall units bear the construction loads and the overall structural stress, reducing the difficulty of supporting the top concrete load due to excessive self-weight or inability to support the load in high spaces during formwork support engineering. By setting gaps in the walls, reasonable construction space can be provided between the load-bearing walls and the load-bearing exterior walls, and the thickness between adjacent radiation protection rooms can be guaranteed to meet the requirements. Furthermore, the water curing of concrete is carried out in conjunction with the detection of cracks in the load-bearing wall units and the load-bearing exterior walls of the main load-bearing parts of the structure during the early construction, and existing cracks can be repaired in a timely manner, reducing the chance of secondary repairs. This not only benefits the curing of the concrete itself but also ensures the reliability of the concrete waterproofing. Moreover, the subsequent filling material can be used to further repair other undiscovered micro-cracks, ensuring that the wall thickness meets the requirements. It is evident that this invention meets the requirements of overall complete and effective radiation protection design, reduced steel reinforcement costs, reasonable stress distribution, easy construction, convenient pipeline and process pre-embedding, and is conducive to ensuring waterproofing safety. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0034] Figure 1 This is a schematic diagram of the design and reinforcement cross-section of an ultra-long reinforced concrete radiation-proof thick wall group structure provided by the present invention;

[0035] Figure 2 This is a structural schematic diagram of the reinforced concrete thick base slab in construction step 1;

[0036] Figure 3 This is a structural diagram showing the structure after the load-bearing exterior wall and the load-bearing wall unit of the radiation shielding room are constructed on the reinforced concrete thick base slab in construction step 2.

[0037] Figure 4This is a structural diagram of the water storage and curing process in step 3 of the construction process;

[0038] Figure 5 This is a structural diagram of the first batch of filler material with the required density, poured and filled using the skip-pour method in step 4 of the construction process.

[0039] Figure 6 This is a structural diagram of the second batch of filler material with the required density, which is poured and filled using the skip-pour method in step 4 of the construction process.

[0040] Figure 7 This is a schematic diagram of the overall structure of an ultra-long reinforced concrete radiation-proof thick wall group.

[0041] In the diagram, 1 is a reinforced concrete thick base slab; 11 is a construction joint; 12 is a side wall guide wall; 13 is an external wall guide wall; 2 is a load-bearing external wall; 3 is a load-bearing wall unit of the radiation shielding room; 31 are the four side walls; 32 is the top slab; 4 is a gap cavity; 5 is the filler material; 51 is the first filler layer; 52 is the second filler layer; 53 is a tongue and groove joint; 6 is the capping slab; 7 is the construction joint; and 71 is the water-stop steel plate. Detailed Implementation

[0042] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0043] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0044] like Figures 1 to 7 As shown, a preferred embodiment of the present invention provides an engineering implementation method for an ultra-long reinforced concrete radiation-proof thick wall group structure, including design steps and construction steps.

[0045] The design process includes the following steps:

[0046] Design Step 1: Decompose the ultra-long reinforced concrete radiation shielding thick wall group structure into easily implementable reinforced concrete thick base slab 1, several spaced radiation shielding room load-bearing wall units 3, load-bearing outer walls 2, capping slab 6, and filling material in the gap cavity formed by filling the gap between the capping slab 6, load-bearing outer walls 2, reinforced concrete thick base slab 1 and the load-bearing wall units 3 of the radiation shielding room.

[0047] Design Step 2: Conduct load-bearing design for the load-bearing wall unit 3 of the radiation protection room to meet national standards and ensure that the load-bearing wall unit 3 of each radiation protection room can independently bear the self-weight of the filling material and the load during construction.

[0048] Design step 3 involves conducting stress design on the reinforced concrete thick base slab 1, load-bearing exterior wall 2, and roof slab 6, and performing calculation and analysis on the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group to ensure that the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group meets the stress performance design requirements and that the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group is basically consistent with the stress performance of the traditional overall structure.

[0049] The construction steps include the following:

[0050] Construction Step 1: Construct the reinforced concrete thick base slab 1 and complete the curing to the design age;

[0051] Construction step 2: Construct all load-bearing wall units 3 and load-bearing outer walls 2 of the radiation protection rooms on the reinforced concrete thick base slab 1. The load-bearing outer walls 2 surround the outer perimeter of the reinforced concrete thick base slab 1. Wall gaps are provided between the load-bearing wall units 3 of the radiation protection rooms adjacent to the load-bearing outer walls 2, between the top surface of the load-bearing wall units 3 of the radiation protection rooms and the top plate 6, and between two adjacent load-bearing wall units 3 of the radiation protection rooms. All the wall gaps form gap cavities 4. The height of the load-bearing outer walls 2 is higher than the height of the load-bearing wall units 3 of the radiation protection rooms. Both the load-bearing wall units 3 and the load-bearing outer walls 2 of the radiation protection rooms are reinforced concrete structures. The load-bearing wall units 3 of the radiation protection rooms include four side walls 31 and a top plate 32.

[0052] Construction step 3: Fill the cavity 4 formed by the gap between the load-bearing outer wall 2 and the reinforced concrete base slab 1 with water for water storage and curing. Then check the cracks and leaks in the load-bearing wall 3, the load-bearing outer wall 2 and the base slab 1. After the inspection is completed, drain the water and repair the cracks and leaks. Specific repair and waterproofing methods can include grouting, applying penetrating crystalline waterproof coatings, etc.

[0053] Construction step 4: Using a skip-filling method, fill the gap cavity 4 formed by the load-bearing outer wall 2 and the reinforced concrete thick base slab 1 with filler material 5. The filler material 5 includes a first filler layer 51 filled in the gap of the wall and a second filler layer 52 connected above the first filler layer 51. The second filler layer 52 extends above the top slab 32 of the radiation shielding room. Specifically, the filling is carried out in two batches, such as... Figure 5 As shown, this is the first batch of filler material 5 with the required density, poured using the skip-fill method. Figure 6 As shown, the second batch of filler material 5 with the required density is poured and filled using the skip-fill method; a thick wall structure is formed between the four side walls 31 of the two adjacent radiation shielding rooms and the first filler layer 51, and a thick top plate 32 structure is formed between the top plate 32 of the radiation shielding room, the second filler layer 52 and the top plate 6.

[0054] Construction step 5: Construct the capping slab 6. The capping slab 6 is a reinforced concrete structure, which forms the overall large structure of the ultra-long reinforced concrete radiation-proof thick wall group. Specifically, the capping slab 6 is constructed using the conventional skip-pour method or by setting up post-pouring strips. After the requirements are met, subsequent construction procedures are carried out. The outer perimeter of the capping slab 6 is connected to the top of the load-bearing outer wall 2. A water-stop steel plate 71 or water-stop strip is provided on the construction joint 7 between the capping slab 6 and the load-bearing outer wall 2 to ensure good waterproofing effect of the construction joint 7.

[0055] This invention, based on shielding and radiation protection requirements, stress requirements, and construction requirements, decomposes the overall large structure of the ultra-long reinforced concrete radiation-proof thick wall group into several independently stressed and reasonably sized radiation-proof room stress-bearing wall units 3 (small structures), reinforced concrete thick base slab 1, capping slab 6, stress-bearing outer wall 2, and filling material 5. This improves upon the traditional one-time construction method by decomposing it into separately formed small structures with reinforced steel reinforcement (the small structures include the radiation-proof room stress-bearing wall units 3, reinforced concrete thick base slab 1, stress-bearing outer wall 2, and capping slab 6). Furthermore, the method of using unreinforced filling material 5 within the secondary gap cavity 4 to form an ultra-long reinforced concrete radiation-proof thick wall group structure allows the entire structure to bear the load as a whole. This change in the load-bearing unit reduces the amount of steel reinforcement and its dense distribution, significantly decreasing the amount of steel used. Compared to the existing technology of one-time molding of large structures, this scheme requires less steel reinforcement and less dense distribution, reducing the difficulty of pre-embedding various required components such as pipelines, central steel plates, and lead blocks. By reducing the thickness and length of walls and slabs poured each time, the difficulty of concrete pouring and temperature-controlled curing is reduced, lowering the risk of cracking in large-volume concrete thick walls and avoiding problems during construction. The inability to set construction joints 7 causes difficulties in preparing and constructing ultra-long concrete at one time; moreover, utilizing the load-bearing wall unit 3 (small structure) of the radiation shielding room to bear the construction load and the overall load of the large structure reduces the difficulty in formwork support due to excessive self-weight or inability to support the load of the top concrete in a high space; by setting the wall gap cavity 4, a reasonable construction space can be provided between the load-bearing wall 3 and the load-bearing outer wall 2, and the thickness between adjacent radiation shielding rooms can be guaranteed to meet the requirements. Furthermore, it facilitates the water curing of concrete and the main construction in the early stage. The crack detection of the load-bearing wall unit 3 and the load-bearing outer wall 2 (small structure) of the radiation protection room in the stress-bearing structure is implemented as a whole. Timely modification of existing cracks reduces the likelihood of secondary repairs, which not only benefits the curing of the concrete itself but also ensures the reliability of the concrete waterproofing. Furthermore, the subsequent filling material 5 is used to further repair other undiscovered micro-cracks, ensuring the wall thickness meets requirements. Therefore, this invention meets the requirements of overall complete and effective radiation protection design, reduced steel reinforcement costs, reasonable stress distribution, easy construction, convenient pipeline and process pre-embedding, and ensures waterproofing safety. The small structure includes the load-bearing wall unit 3 of the radiation protection room, the reinforced concrete thick base slab 1, the roof slab 6, and the load-bearing outer wall 2.

[0056] For example, in construction step 1, the reinforced concrete thick base slab 1 is constructed using a skip-construction method. The reinforced concrete thick base slab 1 includes multiple base slab units, and a water-stop steel plate 71 or water-stop strip is provided on the skip-construction joint 11 between adjacent base slab units to reduce the length of the poured base slab 1 and reduce the difficulty of concrete pouring and temperature-controlled curing. The reinforced concrete thick base slab 1 is provided with side wall guide walls 12 that cooperate with the four side walls 31 and external wall guide walls 13 that cooperate with the load-bearing external walls 2.

[0057] For example, the construction joint 7 between the four side walls 31 and the side wall guide wall 12 is provided with a water-stop steel plate 71 or a water-stop strip, and the construction joint 7 between the outer wall guide wall 13 and the load-bearing outer wall 2 is provided with a water-stop steel plate 71 or a water-stop strip, ensuring that all construction joints 7 have good waterproofing effect.

[0058] For example, the construction joints 7 between the four side walls 31 and the side wall guide wall 12 in the adjacent radiation shielding room are staggered to improve the radiation shielding effect. The specific location of the construction joints 7 should be adjusted in conjunction with physical shielding calculations. The long maze formed by the staggered construction joints increases the radiation shielding effect.

[0059] For example, in the construction step 3, after the inspection and repair are completed, a penetrating crystalline waterproof coating is applied to the inner side of the load-bearing exterior wall 2, the outer side of the load-bearing wall unit 3 of the radiation protection room, and the top surface of the base plate 1 to further improve the waterproofing effect.

[0060] For example, in the construction step 3, water storage and curing are carried out until the design age when the load-bearing wall unit 3 and the load-bearing outer wall 2 of the radiation protection room reach the final setting time, and the water level is higher than the height of the top slab 32.

[0061] For example, the filler 5 is a radiation shielding material. In this embodiment, the radiation shielding material is preferably low-heat hydration and low-strength concrete to ensure good radiation shielding effect of adjacent radiation shielding rooms. Of course, in other embodiments, the filler 5 can also be other radiation shielding materials, such as heavy concrete.

[0062] For example, the end of the second filler layer 52 is provided with a tongue and groove joint 53 to ensure a tight connection between adjacent second filler layers 52 and to ensure good overall force transmission performance.

[0063] This invention can be applied to radiation-affected areas of particle therapy systems and devices (such as heavy ion therapy devices, proton therapy devices, and boron neutron capture therapy devices), including device areas, treatment rooms, linear accelerator treatment rooms, cyclotron areas, and hot chamber areas; as well as scientific research devices with ionizing radiation, such as electron-positron collider tunnels, heavy ion accelerator tunnels, proton accelerator tunnels, neutron accelerator tunnels, and experimental terminals attached to the above-mentioned ion accelerator tunnels. This invention can be applied both underground and on the surface.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An engineering implementation method for an ultra-long reinforced concrete radiation-proof thick wall group structure, characterized in that, Including design steps and construction steps, The design process includes the following steps: Design Step 1: Decompose the ultra-long reinforced concrete radiation shielding thick wall group structure into a reinforced concrete thick base slab, several spaced radiation shielding room load-bearing wall units, load-bearing outer walls, a top slab, and filling material in the gaps and cavities formed between the top slab, load-bearing outer walls, reinforced concrete thick base slab and the load-bearing wall units of the radiation shielding rooms. Design Step 2: Conduct stress design on the load-bearing wall units of the radiation protection room to ensure that each load-bearing wall unit of the radiation protection room can independently bear the self-weight of the filling material and the load during construction. Design step 3: Perform stress design on the reinforced concrete thick base slab, load-bearing external wall and top slab, and perform calculation and analysis on the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group to ensure that the overall structure of the ultra-long reinforced concrete radiation-proof thick wall group meets the stress performance design requirements. The construction steps include the following: Construction Step 1: Construct the aforementioned reinforced concrete thick base slab; Construction Step 2: Construct all the load-bearing wall units and the load-bearing outer walls of the radiation shielding rooms on the reinforced concrete thick base slab. The load-bearing outer walls surround the outer perimeter of the reinforced concrete thick base slab. Wall gaps are provided between the load-bearing wall units of the radiation shielding rooms adjacent to the load-bearing outer walls and between two adjacent load-bearing wall units of the radiation shielding rooms. All the wall gaps form gap cavities. The height of the load-bearing outer walls is higher than the height of the load-bearing wall units of the radiation shielding rooms. Both the load-bearing wall units of the radiation shielding rooms and the load-bearing outer walls are reinforced concrete structures. The load-bearing wall units of the radiation shielding rooms include four side walls and a top slab. Construction step 3: Fill the gap cavity formed by the load-bearing outer wall and the reinforced concrete base plate with water for water storage and curing, then check the cracks and leakage of the load-bearing wall unit, the load-bearing outer wall and the base plate. After the inspection is completed, drain the water and repair the cracks and leakage. Construction step 4: The gap cavity formed by the load-bearing outer wall and the reinforced concrete thick base plate is filled with filler material using the skip-fill method. The filler material includes a first filler layer filled in the gap of the wall and a second filler layer connected above the first filler layer. The second filler layer extends to the top of the radiation shielding room. Construction step 5: Construct the top slab. The outer perimeter of the top slab is connected to the top of the load-bearing exterior wall. The top slab is a reinforced concrete structure.

2. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, In construction step 1, the reinforced concrete thick base slab is constructed using the skip-section method. The reinforced concrete thick base slab includes multiple base slab units, and water-stop steel plates or water-stop strips are provided on the skip-section construction joints between adjacent base slab units.

3. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, In the construction step 1, the reinforced concrete thick base plate is provided with side wall guide walls that cooperate with the four side walls and external wall guide walls that cooperate with the load-bearing external walls.

4. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 3, characterized in that, In construction step 2, the construction joint between the four side walls and the side wall guide wall is provided with a water-stop steel plate or water-stop strip, and the construction joint between the outer wall guide wall and the load-bearing outer wall is provided with a water-stop steel plate or water-stop strip.

5. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 4, characterized in that, The construction joints between the four side walls and the guide walls of the adjacent radiation shielding rooms are staggered.

6. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, In construction step 3, after inspection and repair, a penetrating crystalline waterproof coating is applied to the inner surface of the load-bearing exterior wall, the outer surface of the load-bearing wall unit, and the top surface of the base plate.

7. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, In the construction step 3, when the load-bearing wall unit and the load-bearing outer wall of the radiation shielding room reach the final setting time, water storage and curing are carried out until the design age, and the water level is higher than the height of the top slab.

8. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, The filler is a radiation shielding material.

9. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 8, characterized in that, The radiation shielding material is concrete.

10. The engineering implementation method of the ultra-long reinforced concrete radiation-proof thick wall group structure as described in claim 1, characterized in that, The end of the second filler layer is provided with a tongue and groove joint.

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