A roof structure for a high temperature gas cooled reactor reactor building

Abstract

The embodiment of the application discloses a roof structure of a high-temperature gas cooled reactor plant, comprising: a first part, the first part comprising a steel plate and a concrete area, the concrete area of the first part being arranged outside the steel plate of the first part, and the steel plate of the first part being provided with a first tie member for connecting the concrete area and the steel plate; and a second part arranged above the first part and connected with the first part. The roof structure of the high-temperature gas cooled reactor plant provided by the application forms a roof structure of a split type by arranging the second part above the first part and connecting the second part with the first part, so that the equipment inside the reactor plant is convenient to replace. Meanwhile, the steel plate is arranged in the first part as a formwork for concrete pouring, and the steel plate is a component part of a stress member of the roof structure, so that the pouring process of the concrete is simplified while the overall strength and rigidity of the roof structure are increased, and the construction efficiency of the roof structure is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor building structure design of high temperature gas cooled reactor nuclear power plant, more particularly, to a roof structure of high temperature gas cooled reactor reactor building. BACKGROUND

[0002] The high temperature gas cooled reactor is a fourth generation nuclear reactor type with inherent safety, which has high parameters, high safety and other characteristics, wide market application range and good application prospect. The flexible combination mode of multiple modules further expands its use scenarios and development space. The high temperature gas cooled reactor is freely combined by multiple primary loop high temperature reactor modules, and is arrayed in the containment of the reactor building. The primary loop high temperature reactor module is composed of a reactor chamber and an evaporator chamber, and the evaporator chamber is generally arranged near the center of the containment, and the reactor chamber is generally arranged near the outer wall side of the containment. The roof structure of the reactor building often adopts a flat roof structure or a dome roof structure.

[0003] In the prior art, the roof structure of the reactor building often adopts a construction method of first setting a formwork and then pouring concrete to form a concrete roof structure, which not only cannot guarantee the strength and stiffness, but also makes it difficult to replace some equipment during the later maintenance process. In addition, due to the generally high height of the high temperature gas cooled reactor reactor building, the formwork setting work is more difficult, which leads to low construction efficiency of the high temperature gas cooled reactor reactor building roof structure and safety risks.

[0004] In addition, the main equipment of the multi-module high temperature gas cooled reactor is generally large in size, making it difficult to enter and exit the reactor building. The main equipment needs to be hoisted into the plant through the open top method before the roof structure construction of the high temperature gas cooled reactor reactor building is carried out, which leads to a long construction period of the high temperature gas cooled reactor reactor building, thereby reducing the construction efficiency of the high temperature gas cooled reactor reactor building. Due to the long manufacturing period of the main equipment of the multi-module high temperature gas cooled reactor and the inconsistent arrival time, a clean area needs to be established in the high temperature gas cooled reactor reactor building during the intermittent period of the main equipment arrival, and the reactor building needs to be temporarily closed.

[0005] Therefore, how to improve the construction efficiency of the roof structure of the high temperature gas cooled reactor reactor building becomes a technical problem to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a roof structure of a high temperature gas cooled reactor reactor building to improve the construction efficiency of the roof structure of the high temperature gas cooled reactor reactor building.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A roof structure of a high-temperature gas-cooled reactor plant comprises:

[0009] A first part, the first part comprising a steel plate and a concrete region, the concrete region of the first part being arranged outside the steel plate of the first part, the steel plate of the first part being provided with a first tie member for connecting the concrete region and the steel plate;

[0010] A second part arranged above the first part and connected with the first part.

[0011] Optionally, in the roof structure of the high-temperature gas-cooled reactor plant, the roof structure is a dome structure, and the roof structure comprises a first dome part and a second dome part, the first dome part being the first part, the second dome part being the second part, and the first dome part and the second dome part being provided with a reinforcing ring beam at a connecting position, and the second dome part being connected with the first dome part through the reinforcing ring beam.

[0012] Optionally, in the roof structure of the high-temperature gas-cooled reactor plant, the reinforcing ring beam is provided with a vertical rib plate, and the vertical rib plate is provided with a flow hole for the flow of concrete.

[0013] Optionally, in the roof structure of the high-temperature gas-cooled reactor plant, the first part is provided with a hoisting opening, the hoisting opening being used for hoisting equipment of a reactor chamber, and the hoisting opening being arranged in one-to-one correspondence with the reactor chamber.

[0014] Optionally, in the roof structure of the high-temperature gas-cooled reactor plant, the hoisting opening is provided with a hoisting cover plate at a position of the hoisting opening, the hoisting cover plate being used for closing the hoisting opening.

[0015] Optionally, in the roof structure of the high-temperature gas-cooled reactor plant, the steel plate of the first part is provided with intersecting first stiffening ribs and second stiffening ribs; the hoisting cover plate comprises a steel plate and a concrete region, the concrete region of the hoisting cover plate being arranged above the steel plate of the hoisting cover plate, the steel plate of the hoisting cover plate being provided with a second tie member for connecting the steel plate and the concrete region of the hoisting cover plate, and the steel plate of the hoisting cover plate being provided with intersecting third stiffening ribs and fourth stiffening ribs.

[0016] Optionally, in the roof structure of the high-temperature gas-cooled reactor reactor plant, the concrete area of the first part and the concrete area of the hoisting cover plate each comprises a cast-in-place concrete area; the first tie member of the first part is a first stud, the first stud is welded to the steel plate of the first part, and the first stud extends out of the cast-in-place concrete area of the first part; the second tie member of the hoisting cover plate is a second stud, the second stud is welded to the steel plate of the hoisting cover plate, and the second stud extends out of the cast-in-place concrete area of the hoisting cover plate.

[0017] Optionally, in the roof structure of the high-temperature gas-cooled reactor reactor plant, the second part comprises a space truss and a film, the film is attached to the upper side of the space truss, and the space truss is detachably connected to the reinforced ring beam.

[0018] Optionally, in the roof structure of the high-temperature gas-cooled reactor reactor plant, the concrete area of the first part and the concrete area of the hoisting cover plate each further comprises a post-cast concrete area, and a steel mesh is arranged in the post-cast concrete area of the first part and the post-cast concrete area of the hoisting cover plate; the steel mesh of the first part is connected to the first stud through a tie bar, and the steel mesh of the hoisting cover plate is connected to the second stud through a tie bar.

[0019] Optionally, in the roof structure of the high-temperature gas-cooled reactor reactor plant, the second part comprises a steel plate and a concrete area; the concrete area of the second part is arranged above the steel plate of the second part, and the steel plate of the second part is connected to the reinforced ring beam.

[0020] The roof structure of the high-temperature gas-cooled reactor reactor plant provided by the application has the advantages that the second part is arranged above the first part and connected to the first part to form a roof with a split structure, so that when it is necessary to maintain and replace part of the equipment, the second part can be removed, thereby facilitating replacement of the equipment inside the reactor plant. Meanwhile, the first part is provided with a steel plate, the concrete area is formed by pouring concrete on the outer side of the steel plate, and the first tie member is arranged on the steel plate and used to connect the concrete area and the steel plate, thereby improving the bonding force of the concrete area and the steel plate. The steel plate is used instead of a formwork, and the steel plate is used as a component of the force-bearing member of the roof structure, so that the pouring process of the concrete can be completed without the need to support the formwork, thereby simplifying the pouring process of the concrete and increasing the overall strength and rigidity of the roof structure.

[0021] Compared with the prior art, the roof structure of the high-temperature gas cooled reactor plant provided by the application has the following advantages: the second part is arranged above the first part and connected with the first part to form a split roof, so that the equipment inside the reactor plant can be conveniently replaced; meanwhile, the steel plate is arranged in the first part as a formwork for pouring concrete, and the steel plate is used as a component part of the force receiving member of the roof structure, so that the pouring process of the concrete is simplified, the overall strength and rigidity of the roof structure are improved, and the construction efficiency of the roof structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0023] Figure 1 The planar layout of the interior of the high-temperature gas cooled reactor plant is provided for the embodiments of the present application.

[0024] Figure 2 The planar layout of the interior of the high-temperature gas cooled reactor plant is provided for the embodiments of the present application.

[0025] Figure 3 The planar layout of the interior of the high-temperature gas cooled reactor plant is provided for the embodiments of the present application. Figure 2 The A-A cross-sectional view of the middle part.

[0026] Figure 4 The cross-sectional view of the roof structure of the high-temperature gas cooled reactor plant is provided for the first embodiment of the present application.

[0027] Figure 5 The planar schematic view of the first dome part is provided for the first embodiment of the present application.

[0028] Figure 6 The cross-sectional view of the first dome part is provided for the first embodiment of the present application.

[0029] Figure 7 The cross-sectional view of the first dome part is provided for the second embodiment of the present application.

[0030] Figure 8 The structural schematic view of the hoisting cover plate is provided for the embodiments of the present application.

[0031] Wherein, 100 is a containment, 101 is a reactor cavity, 102 is a steam generator cavity, 200 is a first dome part, 201 is a second dome part, 2011 is a first stiffening rib, 2012 is a second stiffening rib, 2013 is a first cast-in-place concrete area, 2014 is a second cast-in-place concrete area, 2015 is a steel plate, 2016 is a first stud, 2017 is a tie bar, 2018 is a steel mesh, 202 is a reinforced ring beam, 2021 is a flow hole, 2022 is a vertical rib plate, 203 is a hoisting cover plate, 2031 is a first fastener, 2032 is a second fastener, 2033 is a third stiffening rib, 2034 is a fourth stiffening rib, 2035 is a second stud, 204 is a space truss, and 205 is a membrane. DETAILED DESCRIPTION

[0032] The core of the present application is to provide a roof structure of a high-temperature gas-cooled reactor plant to improve the construction efficiency of the roof structure of the high-temperature gas-cooled reactor plant.

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] As shown in Figure 2 and Figure 3 , the present application discloses a roof structure of a high-temperature gas-cooled reactor plant, which comprises a first part and a second part. It should be noted that in the prior art, the roof structure of the reactor plant is often constructed by first setting a formwork and then pouring concrete to form a concrete roof structure, which not only has difficulty in ensuring the strength and stiffness, but also makes it difficult to replace some equipment of the steam generator cavity 102 in the later maintenance process. In addition, since the height of the high-temperature gas-cooled reactor plant is generally high, the formwork setting work is more difficult, which leads to low construction efficiency of the roof structure of the high-temperature gas-cooled reactor plant and safety risks. The roof structure of the high-temperature gas-cooled reactor plant disclosed in the embodiments of the present application is formed by setting the first part and the second part, the second part is located above the first part and connected with the first part to form a split-type roof structure, and the second part corresponds to the area where the steam generator cavity 102 is located. Figure 1 and Figure 3As shown, when maintenance or replacement of some equipment in the steam generator compartment 102 is required, the second section can be dismantled, and then the equipment in the steam generator compartment 102 can be replaced. Meanwhile, by setting steel plate 2015 in the first section as a formwork for concrete pouring and using steel plate 2015 as a component of the load-bearing structure of the roof, the overall strength and rigidity of the roof structure are increased, while the concrete pouring process is simplified, thereby improving the construction efficiency of the roof structure.

[0035] Among them, such as Figure 4 As shown, the first section includes a steel plate 2015 and a concrete area. The concrete area of ​​the first section is located on the outside of the steel plate 2015 of the first section, and a first tie member is provided on the steel plate 2015 of the first section to connect the concrete area and the steel plate 2015, so as to improve the adhesion between the concrete area and the steel plate 2015. Specifically, for ease of understanding, the two ends of the steel plate 2015 in the first section are defined as the first end and the second end, respectively. The first end of the steel plate 2015 in the first section is fixed to the wall of the containment vessel 100 of the reactor building, and the second end of the steel plate 2015 in the first section is connected to the second section. At the same time, the first tie member is welded to the steel plate 2015 in the first section to increase the bonding force between the concrete zone formed by pouring concrete and the steel plate 2015. The steel plate 2015 not only acts as a concrete pouring template to simplify the concrete pouring process and improve the construction efficiency of the roof structure, but also, as a component of the load-bearing members of the roof structure, improves the overall strength and stiffness of the roof structure.

[0036] Furthermore, the second section is located above the first section and is connected to the first section to form a split-structure roof, thereby facilitating the maintenance and replacement of some equipment within the reactor building. Specifically, since the steam generator compartment 102 is generally located near the center of the containment vessel 100 and below the second section, and the reactor compartment 101 is generally located near the outer wall of the containment vessel 100, and some equipment in the steam generator compartment 102 requires later maintenance, when it is necessary to repair or replace some equipment in the steam generator compartment 102, the second section can be dismantled by cutting, and then the equipment in the steam generator compartment 102 can be replaced.

[0037] The high-temperature gas cooled reactor plant roof structure provided by the application comprises a first part and a second part, the second part is arranged above the first part and connected with the first part to form a split roof structure, when it is necessary to maintain and replace part of the equipment, the second part can be removed to facilitate replacement of the equipment inside the reactor plant.

[0038] Compared with the prior art, the high-temperature gas cooled reactor plant roof structure provided by the application comprises a first part and a second part, the second part is arranged above the first part and connected with the first part to form a split roof structure, thereby facilitating replacement of the equipment inside the reactor plant.

[0039] Further, as Figure 4 and Figure 7As shown in the drawings, in an embodiment, the roof structure is a dome structure, and the roof structure comprises a first dome part 200 and a second dome part 201. The first dome part 200 is a first subpart, and the second dome part 201 is a second subpart. A reinforcing ring beam 202 is arranged at a connecting position of the first dome part 200 and the second dome part 201. The second dome part 201 is connected to the first dome part 200 through the reinforcing ring beam 202. The reinforcing ring beam 202 is provided with vertical rib plates 2022. The vertical rib plates 2022 are provided with flow-through holes 2021 for the flow of concrete. Specifically, the reinforcing ring beam 202 comprises a first side steel plate and a second side steel plate. The first side steel plate is an outer side steel plate of the reinforcing ring beam 202, and the second side steel plate is an inner side steel plate of the reinforcing ring beam 202. The first side steel plate and the second side steel plate are respectively welded to the steel plate 2015 of the first subpart. The second dome part 201 is connected to the second side steel plate of the reinforcing ring beam 202. The vertical rib plates 2022 are a plurality of vertical rib plates, which are distributed in a ring shape and are located between the first side steel plate and the second side steel plate and are respectively welded to the first side steel plate and the second side steel plate. The vertical rib plates 2022 are provided with the flow-through holes 2021 for the flow of concrete. When the first dome part 200 and the second dome part 201 are connected, the concrete can be poured into the reinforcing ring beam 202 through the flow-through holes 2021, so as to improve the strength of the connecting position of the first dome part 200 and the second dome part 201.

[0040] Further, as shown in the drawings, Figure 1 and Figure 2 in an embodiment, hoisting openings are arranged on the first subpart, and the hoisting openings are arranged one-to-one with the reactor cavity 101 and are used for hoisting equipment of the reactor cavity 101. Hoisting cover plates 203 are arranged at positions of the hoisting openings and are used for closing the hoisting openings. Intersecting stiffening ribs are arranged on the steel plate 2015 of the first subpart. For the convenience of understanding, the intersecting stiffening ribs are defined as a first stiffening rib 2011 and a second stiffening rib 2012. In this embodiment, the first stiffening rib 2011 is a ring-shaped stiffening rib, and the second stiffening rib 2012 is a radial stiffening rib. The first stiffening rib 2011 and the second stiffening rib 2012 are respectively welded to the steel plate 2015 of the first subpart, so as to improve the rigidity of the steel plate 2015 of the first subpart and increase the bonding force between the concrete area of the first subpart and the steel plate 2015 of the first subpart.

[0041] Further, as shown in the drawings, Figure 8As shown, the hoisting cover plate 203 includes a steel plate 2015 and a concrete area, the concrete area of the hoisting cover plate 203 is located above the steel plate 2015 of the hoisting cover plate 203, and the steel plate 2015 of the hoisting cover plate 203 is provided with a second tie member for connecting the steel plate 2015 and the concrete area of the hoisting cover plate 203 to increase the bonding force between the steel plate 2015 of the hoisting cover plate 203 and the concrete area of the hoisting cover plate 203, and the steel plate 2015 of the hoisting cover plate 203 is provided with intersecting stiffening ribs to increase the stiffness of the steel plate 2015 of the hoisting cover plate 203 while improving the bonding force of the steel plate 2015 of the hoisting cover plate 203 and the concrete area. For the convenience of understanding, the intersecting stiffening ribs are defined as third stiffening ribs 2033 and fourth stiffening ribs 2034 respectively, in this embodiment, the third stiffening ribs 2033 and the fourth stiffening ribs 2034 can be arranged perpendicular to each other, of course, the third stiffening ribs 2033 and the fourth stiffening ribs 2034 can also intersect and be arranged non-perpendicularly, wherein the third stiffening ribs 2033 and the fourth stiffening ribs 2034 are welded on the steel plate 2015 of the hoisting cover plate 203. First mounting holes are formed around the steel plate 2015 of the hoisting cover plate 203, so that the hoisting cover plate 203 is fixed to the steel plate 2015 of the first part by the first fasteners 2031, second mounting holes are formed on the third stiffening ribs 2033 and the fourth stiffening ribs 2034 around the hoisting cover plate 203, and the hoisting cover plate 203 is connected with the stiffening ribs of the first part and the first side steel plate of the reinforced ring beam 202 respectively by the second fasteners 2032.

[0042] Specifically, as shown in the figure, Figure 4 The first fasteners 2031 are fixed by high-strength bolts, and the second fasteners 2032 are fixed by one-way bolts, of course, the first fasteners 2031 can also be one-way bolts. Among them, the one-way bolt can be tightened by rotating one side of the bolt, in this embodiment, the rotation side of the one-way bolt is located on one side of the hoisting cover plate 203, that is, away from the stiffening rib of the first part or away from the first side steel plate of the reinforced ring beam 202, so that the rotation tool has operation space to facilitate the rotation tool to fasten the second fastener 2032. When the equipment of the reactor cavity 101 needs to be hoisted from the hoisting opening into the reactor building, first, use the rotation tool to remove the first fastener 2031 and the second fastener 2032, then use the hoisting equipment to open the hoisting cover plate 203, and then hoist the equipment of the reactor cavity 101 from the hoisting opening to the reactor cavity 101, at this time, use the hoisting equipment to place the hoisting cover plate 203 at the hoisting opening, and use the first fastener 2031 and the second fastener 2032 to fix it.

[0043] Further, as shown in the figure, Figure 4As shown, in a specific embodiment, both the concrete area of ​​the first section and the concrete area of ​​the hoisting cover plate 203 include a pre-cast concrete area 2013. For ease of understanding, concrete is poured on the outside of the steel plate 2015 of the first section to form a first pre-cast concrete area, and concrete is poured on the top of the steel plate 2015 of the hoisting cover plate 203 to form a second pre-cast concrete area. The first connecting member of the first section is a first stud 2016, which is welded to the steel plate 2015 of the first section and extends out of the pre-cast concrete area 2013 of the first section, i.e., the first stud 2016 extends out of the first pre-cast concrete area. The second connecting member of the hoisting cover plate 203 is a second stud 2035, which is welded to the steel plate 2015 of the hoisting cover plate 203 and extends out of the pre-cast concrete area 2013 of the hoisting cover plate 203, i.e., the second stud 2035 extends out of the second pre-cast concrete area.

[0044] Furthermore, when a clean area needs to be established within the high-temperature gas-cooled reactor building, in order to prevent dust from entering the high-temperature gas-cooled reactor building, such as... Figure 4 to Figure 6 As shown, in one specific embodiment, the second section adopts a space frame membrane structure, wherein the second section includes a space frame 204 and a membrane 205. The space frame 204 is detachably connected to the reinforcing ring beam 202, and the membrane 205 is attached to the top of the space frame 204 to prevent dust and rainwater from entering the reactor building. Specifically, as Figure 4 and Figure 5 As shown, the space frame 204 and the reinforcing ring beam 202 are connected by bolts, allowing the space frame membrane structure to temporarily open and close. This ensures the airtightness of the high-temperature gas-cooled reactor building while also facilitating disassembly, thus allowing large equipment to easily enter the high-temperature gas-cooled reactor building. Simultaneously, when a clean area needs to be established within the high-temperature gas-cooled reactor building, a hoisting device is used to place the hoisting cover 203 into the hoisting opening, and it is temporarily fixed using the first fastener 2031 and the second fastener 2032, thereby closing the hoisting opening and ensuring the airtightness of the reactor building. The specific implementation method for fixing the hoisting cover 203 has been explained and described in the above embodiments, and will not be repeated here.

[0045] Furthermore, such as Figure 7As shown, after the pressure vessel of reactor compartment 101 has been fully installed in the reactor building, the hoisting port can be closed. In a specific embodiment, both the concrete area of ​​the first section and the concrete area of ​​the hoisting cover plate 203 include a post-cast concrete area 2014. For ease of understanding, concrete is poured outside the first pre-cast concrete area of ​​the first section to form the first post-cast concrete area, and concrete is poured above the second pre-cast concrete area of ​​the hoisting cover plate 203 to form the second post-cast concrete area. Both the post-cast concrete area 2014 of the first section and the post-cast concrete area 2014 of the hoisting cover plate 203 are equipped with reinforcing mesh 2018. For ease of understanding, the first post-cast concrete area contains the first reinforcing mesh, and the second post-cast concrete area contains the second reinforcing mesh. The reinforcing mesh 2018 of the first section is connected to the first stud 2016 via tie rods 2017, and the reinforcing mesh 2018 of the hoisting cover plate 203 is connected to the second stud 2035 via tie rods 2017. Specifically, the first steel mesh is connected to the first stud 2016 by a tie bar 2017, and the second steel mesh is connected to the second stud 2035 by a tie bar 2017, so as to improve the bonding force between the post-cast concrete area 2014 and the pre-cast concrete area 2013. At the same time, the first post-cast concrete area and the second post-cast concrete area are cast as a whole, so that the outer surfaces of the first post-cast concrete area and the second post-cast concrete area form a smooth arc surface, which increases the aesthetics of the first section and improves the overall stability of the first section.

[0046] Furthermore, such as Figure 7 As shown, in one specific embodiment, after all the evaporator equipment in the steam generator compartment 102 has arrived and been installed, the second section adopts a steel plate concrete structure. The second section includes a steel plate 2015 and a concrete area, with the concrete area positioned above the steel plate 2015. The steel plate 2015 is connected to a reinforcing ring beam 202. Specifically, the steel plate 2015 is welded to the reinforcing ring beam 202, and concrete is poured at the connection point between the steel plate 2015 and the reinforcing ring beam 202. This allows the reinforcing ring beam 202 to form an integral structure with both the concrete areas of the second and first sections, increasing the overall strength and rigidity of the high-temperature gas-cooled reactor building roof structure, thereby improving the seismic performance of the high-temperature gas-cooled reactor building. It should be noted that the steel plate concrete structure used in the second section can be a single steel plate concrete structure, and the single steel plate concrete structure is similar to the structure of the first section; this will not be elaborated further here.

[0047] like Figure 4 and Figure 7As shown, in one specific embodiment, when the pressure vessel of the reactor compartment 101 enters the reactor building, since only one pressure vessel is hoisted into the building at a time through the hoisting port, only one hoisting cover plate 203 needs to be opened. After the equipment is in place, the hoisting port can be closed with the hoisting cover plate 203. This results in fewer weakened parts in the entire roof structure during the construction process, thereby ensuring the integrity and safety reliability of the entire roof structure. After all the pressure vessels of the reactor compartment 101 are installed, concrete is poured on the outside of the pre-cast concrete area 2013 of the first section and above the pre-cast concrete area 2013 of the hoisting cover plate 203 to form the post-cast concrete area 2014 of the first section and the post-cast concrete area 2014 of the hoisting cover plate 203, so that the post-cast concrete area 2014 of the first section and the post-cast concrete area 2014 of the hoisting cover plate 203 form an integral structure. Meanwhile, during the equipment's entry into the reactor building, the second section utilizes a space grid membrane structure, which is detachably connected to the reinforcing ring beam 202 via bolts. The space grid membrane structure is lightweight, facilitating repeated disassembly and installation, thus enabling it to meet the requirements for temporary opening and closing. Once all the evaporator equipment in the steam generator compartment 102 has arrived and been installed, the space grid membrane structure is dismantled. At this point, the second section is constructed using steel-concrete composite panels. After the concrete hardens, the reinforcing ring beam 202 and the second section form an integral structure.

[0048] Furthermore, during the service of the high-temperature gas-cooled reactor building, the second section can be cut off from the roof structure at the connection point between the reinforcing ring beam 202 and the second section, and lifted off as a whole, so that the evaporator equipment of the steam generator compartment 102 can be hoisted to the outside for replacement or external maintenance. After the evaporator equipment is re-hoisted into place, the concrete at the cut location of the second section is excavated and treated, and then the steel plate 2015 of the cut second section is welded to the reinforcing ring beam 202. At the same time, high-grade concrete is poured to compact the excavated area, and after it hardens, the integrity of the roof structure can be restored.

[0049] It should be noted that the roof structure of the high-temperature gas-cooled reactor building disclosed in this embodiment of the invention, with a hoisting opening above the reactor compartment 101 and a temporary hoisting cover 203, can effectively reduce resource waste, shorten the construction period, and save construction costs. Furthermore, when the roof structure adopts a split dome structure, it not only enriches the exterior design of the roof structure but also, through the setting of a reinforcing ring beam 202, enables the second dome to have the ability to open large openings later, which is not available in traditional dome structures. Moreover, the use of a steel plate concrete structure ensures that the second dome can still achieve good overall load-bearing performance after restoration. The roof structure disclosed in this embodiment of the invention perfectly matches the layout characteristics of multi-module high-temperature reactors. The structure above the evaporator equipment, with its ability to be opened later, reduces the manufacturing requirements of the evaporator, thereby reducing project costs. Of course, the roof structure disclosed in this embodiment of the invention can also be matched with other types of small reactor buildings, which will not be elaborated upon here.

[0050] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roof structure for a high-temperature gas-cooled reactor building, characterized in that, include: The first part includes a steel plate (2015) and a concrete area. The concrete area of ​​the first part is located on the outside of the steel plate (2015) of the first part. A first tie member is provided on the steel plate (2015) of the first part for connecting the concrete area and the steel plate (2015). The second part is disposed above the first part, and the second part is connected to the first part; The roof structure is a dome structure, and the roof structure includes a first dome (200) and a second dome (201). The first dome (200) is the first part, and the second dome (201) is the second part. A reinforcing ring beam (202) is provided at the connection position between the first dome (200) and the second dome (201). The second dome (201) is connected to the first dome (200) through the reinforcing ring beam (202). The reinforcing ring beam (202) is provided with vertical ribs (2022), and the vertical ribs (2022) are provided with flow holes (2021) for concrete to flow through. The second part includes a space frame (204) and a film (205), the film (205) being attached to the top of the space frame (204), and the space frame (204) being detachably connected to the reinforcing ring beam (202).

2. The roof structure of the high-temperature gas-cooled reactor building according to claim 1, characterized in that, The first section is provided with a hoisting port, which is used to hoist the equipment of the reactor compartment (101), and the hoisting port is set in a one-to-one correspondence with the reactor compartment (101).

3. The roof structure of the high-temperature gas-cooled reactor building according to claim 2, characterized in that, A lifting cover plate (203) is provided at the location of the lifting port to close the lifting port.

4. The roof structure of the high-temperature gas-cooled reactor building according to claim 3, characterized in that, The steel plate (2015) of the first section is provided with intersecting first stiffening ribs (2011) and second stiffening ribs (2012); the hoisting cover plate (203) includes a steel plate (2015) and a concrete area, the concrete area of ​​the hoisting cover plate (203) is located above the steel plate (2015) of the hoisting cover plate (203), and the steel plate (2015) of the hoisting cover plate (203) is provided with a second tie member for connecting the steel plate (2015) of the hoisting cover plate (203) and the concrete area, and the steel plate (2015) of the hoisting cover plate (203) is provided with intersecting third stiffening ribs (2033) and fourth stiffening ribs (2034).

5. The roof structure of the high-temperature gas-cooled reactor building according to claim 4, characterized in that, Both the concrete area of ​​the first section and the concrete area of ​​the hoisting cover plate (203) include a pre-cast concrete area (2013); the first tie member of the first section is a first stud (2016), which is welded to the steel plate (2015) of the first section, and the first stud (2016) extends out of the pre-cast concrete area (2013) of the first section; the second tie member of the hoisting cover plate (203) is a second stud (2035), which is welded to the steel plate (2015) of the hoisting cover plate (203), and the second stud (2035) extends out of the pre-cast concrete area (2013) of the hoisting cover plate (203).

6. The roof structure of the high-temperature gas-cooled reactor building according to claim 5, characterized in that, Both the concrete area of ​​the first section and the concrete area of ​​the hoisting cover plate (203) include a post-cast concrete area (2014), and both the post-cast concrete area (2014) of the first section and the post-cast concrete area (2014) of the hoisting cover plate (203) are provided with steel mesh (2018). The steel mesh (2018) of the first section is connected to the first stud (2016) through tie bars (2017), and the steel mesh (2018) of the hoisting cover plate (203) is connected to the second stud (2035) through tie bars (2017).

7. The roof structure of the high-temperature gas-cooled reactor building according to claim 6, characterized in that, The second section includes a steel plate (2015) and a concrete area; the concrete area of ​​the second section is located above the steel plate (2015) of the second section, and the steel plate (2015) of the second section is connected to the reinforcing ring beam (202).

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