A large gantry crane track foundation and gantry crane for nuclear facility construction

Abstract

The present invention relates to the technical field of crane foundations, and particularly to a large gantry crane track foundation and a gantry crane for nuclear facility construction, including a track foundation of column A, which is arranged outside the nuclear island foundation pit and has a hollow along the track direction as a pipe gallery structure; a track foundation of column B, which is arranged inside the nuclear island foundation pit and is supported by pier columns below to make its elevation consistent with that of the track foundation of column A, and has a hollow along the track direction as a pipe gallery structure, and there is a space for the pipe gallery to pass through between adjacent pier columns; the present invention realizes convenient structural design of the crane support legs for the track foundation of column B by arranging pier columns and solves the layout requirements of various pipe galleries and pipelines intersecting with the track foundation; by adopting the combined layout of the track foundation and the pipe gallery structure, not only the bearing capacity of structural members is improved, but also the influence of the lateral pressure of the track foundation base on the pipe gallery structure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of crane foundations, and particularly to a large gantry crane track foundation and a gantry crane for nuclear facility construction. Background Art

[0002] The modular and prefabricated construction method is the development trend of nuclear facility construction technology. The maximum net weight of the hoisted items in the nuclear island building of the nuclear facility has reached 1400t. The foundation pit of the nuclear island building is a deep foundation pit. Conventionally, crawler cranes are used in nuclear facility construction. The crawler crane foundation is approximately a rectangular area of 20m x 40m, arranged on one side of the nuclear island building. The foundation bears the surface load transmitted by the crawler crane. While the gantry crane uses two columns of support legs, and the corresponding support leg foundations need two columns, which are arranged on both sides of the nuclear island building. The width of a single column foundation is about 4m, arranged in a straight line along the running direction. The length of a single unit single column foundation is about several hundred meters, and the foundation bears the line load transmitted by the gantry crane.

[0003] For the nuclear island building basement of the nuclear facility, deep foundation pit excavation is required. There are many pipe galleries and pipelines arranged around the nuclear island building. The pipe galleries, pipelines and the crane foundation are arranged independently, and there should be a certain distance between them on the plane to avoid mutual influence. The plane range of the site is large.

[0004] The crawler crane foundation is arranged in a square shape at the top of the foundation pit. The square foundation covers a small area and can avoid interference with pipe galleries and pipelines. The track foundation of the large gantry crane used in nuclear facility construction is different from the traditional crawler crane foundation. The gantry crane foundation is arranged in a straight line around the nuclear island building. The length of the straight foundation is large, and one column of the foundation is at the bottom of the foundation pit, and one column of the foundation is at the top of the foundation pit. There is a height difference between the two columns of the foundation, and there is mutual influence and interference with the pipe galleries and pipelines entering and leaving the nuclear island building at the same time. Summary of the Invention

[0005] The purpose of the present invention is to provide a large gantry crane track foundation and a gantry crane for nuclear facility construction to solve the problem of mutual influence and even interference between the track foundation and the pipe galleries and pipelines entering and leaving the nuclear island building. To achieve the above purpose, the present invention is solved by the following technical solutions:

[0006] In the first aspect, the present invention provides a large gantry crane track foundation for nuclear facility construction, including:

[0007] Column A track foundation, arranged outside the nuclear island foundation pit, and having a hollow along the track direction inside as a pipe gallery structure;

[0008] Column B track foundation, arranged inside the nuclear island foundation pit, and supported by pier columns below to make its elevation consistent with that of the Column A track foundation. It has a hollow along the track direction inside as a pipe gallery structure, and there is a space for the pipe gallery to pass between adjacent pier columns.

[0009] As a further technical solution, both the track foundation of column A and the track foundation of column B include inverted T-shaped strip tracks, and the space between the flange and the web of the inverted T-shaped strip track is enclosed by a pipe gallery wall to form the pipe gallery structure.

[0010] As a further technical solution, the inverted T-shaped strip track and the pipe gallery wall are an integral structural member.

[0011] As a further technical solution, both the track foundation of column A and the track foundation of column B are formed by concrete pouring, and the inverted T-shaped strip track and the pipe gallery wall are poured together.

[0012] As a further technical solution, the inverted T-shaped strip track and the pipe gallery wall are connected together by steel bars.

[0013] As a further technical solution, the inverted T-shaped strip track of the track foundation of column B is poured together with the top of the pier configured thereto.

[0014] As a further technical solution, a pier foundation is provided at the bottom of the pier, and the pier is poured together with the pier foundation.

[0015] As a further technical solution, the hollow cross-section of the pipe gallery structure is rectangular.

[0016] As a further technical solution, the cross-section formed by the pipe gallery structure and the inverted T-shaped strip track is rectangular.

[0017] In a second aspect, the present invention provides a gantry crane, the track foundation of which adopts the large gantry crane track foundation for nuclear facility construction as described in the first aspect.

[0018] The beneficial effects of the present invention are as follows:

[0019] (1) The present invention adopts the combined layout of the track foundation and the pipe gallery structure. The track foundation and the pipe gallery structure become a structural member, increasing the cross-sectional area and overall stiffness of the structural member, jointly bearing the load, improving the bearing capacity of the structural member, reducing the deformation of the structural member, solving the influence of the lateral pressure at the bottom of the track foundation on the pipe gallery structure and the influence of the excavation of the pipe gallery structure foundation on the stability of the track foundation when the track foundation and the pipe gallery structure are arranged adjacent and independently. At the same time, the combined layout of the track foundation and the pipe gallery structure reduces the floor area, saves the site, reduces the use of structural raw materials, and saves costs.

[0020] (2) In the present invention, pipe galleries and pipelines are arranged between pier structures. Various pipe galleries and pipelines intersecting with the track foundation can be arranged below the track beam. The track beam, pipe gallery and pipeline can be staggered in elevation to avoid interference, solving the layout requirements of various pipe galleries and pipelines intersecting with the track foundation.

[0021] (3) The present invention uses pier columns to lift the track foundation of column B from the bottom of the foundation pit to the top of the foundation pit, making it at the same elevation as the top of the track foundation of column A, so that the bottom starting elevations of the two support legs of the gantry crane are the same, which is convenient for the structural design of the support legs of the gantry crane.

[0022] (4) The present invention realizes the convenience for the structural design of the crane support legs and solves the layout requirements of various pipe galleries and pipelines intersecting with the track foundation by setting pier columns, achieving two goals with one action; by adopting the combined layout of the track foundation and the pipe gallery structure, not only the bearing capacity of the structural members is improved, but also the influence of the lateral pressure of the track foundation base on the pipe gallery structure is reduced, achieving two goals with one action. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The attached drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute a limitation to the present invention. It should also be understood that these drawings are shown for simplicity and clarity and are not necessarily drawn to scale. The present invention will now be described and explained with additional features and details by using the drawings, wherein:

[0024] Figure 1 It shows the layout plan of the track foundation in the embodiment of the present invention;

[0025] Figure 2 It shows the cross-sectional view of the track foundation in the embodiment of the present invention;

[0026] Figure 3 It shows the cross-sectional view of the track foundation of column A in the embodiment of the present invention;

[0027] Figure 4 It shows the cross-sectional view of the track foundation of column B in the embodiment of the present invention;

[0028] Figure 5 It shows the top view of the track beam bottom plate and pier column of the track foundation of column B in the embodiment of the present invention.

[0029] In the figure: 1, track foundation of column A; 2, track foundation of column B; 3, gantry crane; 4, pipe gallery perpendicular to the track foundation; 5a, basement of nuclear island plant; 5b, basement of other plants; 6, slope of foundation pit excavation of plant; 1a, bottom plate of foundation beam; 1b, foundation beam; 1c, wall of pipe gallery of column A; 1d, internal clear space of pipe gallery of column A; 2a, bottom plate of track beam; 2b, track beam; 2c, wall of pipe gallery of column B; 2d, internal clear space of pipe gallery of column B; 2e, pier column; 2f, foundation of pier column. DETAILED DESCRIPTION OF THE INVENTION

[0030] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the typical embodiments of the present invention will be clearly and completely described.

[0031] Embodiment 1

[0032] As Figures 1 - 5 shown, this embodiment provides a large gantry crane track foundation for nuclear facility construction, including:

[0033] Track foundation 1 of column A is arranged outside the nuclear island foundation pit, specifically on the top outside the foundation pit, and has a hollow along the track direction inside as a pipe gallery structure;

[0034] Track foundation 2 of column B is arranged inside the nuclear island foundation pit, and is supported by pier 2e below to make its elevation consistent with that of track foundation 1 of column A. It has a hollow along the track direction inside as a pipe gallery structure, and there is a space for the pipe gallery to pass between adjacent piers 2e.

[0035] As Figure 1 and Figure 2 shown, a nuclear island plant basement 5a and other plant basements 5b are arranged inside the foundation pit, and a plant foundation pit excavation slope 6 is also arranged on one side close to track foundation 1 of column A. A pipe gallery 4 perpendicular to the track foundation is arranged between the nuclear island plant basement 5a and other plant basements 5b. There is a space for the pipe gallery to pass between adjacent piers 2e, and the pipe gallery here is the pipe gallery 4 perpendicular to the track foundation. It can be understood that the pipe gallery does not have to be perpendicular to the track foundation, and other crossing states are also included.

[0036] In addition, another pipe gallery is in the same direction as the track foundation and is arranged together. By combining the layout of the track foundation and the pipe gallery structure, the track foundation and the pipe gallery structure become a structural member, increasing the cross-sectional area and overall stiffness of the structural member, jointly bearing the load, improving the bearing capacity of the structural member, reducing the deformation of the structural member, solving the influence of the lateral pressure at the bottom of the track foundation on the pipe gallery structure and the influence of the excavation of the pipe gallery structure foundation on the stability of the track foundation when the track foundation and the pipe gallery structure are arranged separately adjacent to each other. At the same time, the combined layout of the track foundation and the pipe gallery structure reduces the floor area, saves the site, reduces the use of structural raw materials, and saves costs.

[0037] A pipe gallery and pipelines are arranged between the pier structures. Various pipe galleries and pipelines crossing the track foundation can be arranged below the track beam. The track beam, pipe gallery and pipelines can be staggered in elevation to avoid interference, solving the layout requirements for various pipe galleries and pipelines crossing the track foundation.

[0038] In this embodiment, on the first hand, the column pier 2e is used to lift the B-column track foundation 2 from the bottom of the foundation pit to the top of the foundation pit, making its elevation consistent with that of the top of the A-column track foundation 1. This ensures that the bottom starting elevations of the two support legs of the gantry crane are the same, facilitating the structural design of the crane support legs and meeting the requirements of the large gantry crane for foundation bearing capacity and deformation. In addition, the gaps between the column piers can accommodate utility tunnels and pipelines that cross the track foundation, meeting the layout requirements of various utility tunnels and pipelines that cross the track foundation. On the second hand, the combined layout of the track foundation and the utility tunnel structure is adopted, making the track foundation and the utility tunnel structure form a structural member. While improving the bearing capacity of the structural member, it solves the influence of the lateral pressure at the bottom of the track foundation on the utility tunnel structure and the influence of the excavation of the utility tunnel structure foundation on the stability of the track foundation when the track foundation and the utility tunnel structure are arranged separately and independently adjacent to each other.

[0039] Both the A-column track foundation 1 and the B-column track foundation 2 include inverted T-shaped strip tracks. The space between the flange and the web of the inverted T-shaped strip track is enclosed by setting utility tunnel walls to form a utility tunnel structure.

[0040] As Figure 3 shown, the inverted T-shaped strip track of the A-column track foundation 1 includes a foundation beam bottom slab 1a and a foundation beam 1b, which form an inverted T shape. The space between the flange and the web of the inverted T-shaped strip track is enclosed by setting A-column utility tunnel walls 1c to form a utility tunnel structure. Its internal hollow structure is the internal clearance 1d of the A-column utility tunnel. The foundation beam bottom slab 1a contacts the ground, and the foundation beam 1b thereon serves as the track beam.

[0041] As Figure 4 shown, the inverted T-shaped strip track of the B-column track foundation 2 includes a track beam bottom slab 2a and a track beam 2b, which form an inverted T shape. The space between the flange and the web of the inverted T-shaped strip track is enclosed by setting B-column utility tunnel walls 2c to form a utility tunnel structure. Its internal hollow structure is the internal clearance 2d of the B-column utility tunnel. It can be understood that each track foundation is configured with two utility tunnel structures. Substantially, the inverted T-shaped strip tracks of the A-column track foundation 1 and the B-column track foundation 1 have the same structure, only the component names are different.

[0042] In this embodiment, the hollow cross-section of the utility tunnel structure is rectangular, maximizing the internal space of the utility tunnel. The cross-section formed by the utility tunnel structure and the inverted T-shaped strip track is rectangular, maximizing the overall cross-sectional size of the track foundation.

[0043] In this embodiment, the space between the flange and the web of the inverted T-shaped strip track is enclosed by configuring utility tunnel walls, forming a combined configuration of the track foundation and the utility tunnel. This can not only meet the bearing capacity requirements of the gantry crane but also meet the design requirements of the utility tunnel.

[0044] The inverted T-shaped strip track and the pipe gallery wall are an integral structural member, which increases the cross-sectional area and overall stiffness of the structural member, enables them to bear force together, improves the load-bearing capacity of the structural member, and reduces the deformation of the structural member.

[0045] The track foundation 1 of column A and the track foundation 2 of column B are both made of cast concrete. The inverted T-shaped strip track is cast together with the pipe gallery wall, making the inverted T-shaped strip track and the pipe gallery wall an integral structural member.

[0046] In order to form an integral structural member, in this embodiment, the inverted T-shaped strip track and the pipe gallery wall are connected together by steel bars.

[0047] Such as Figure 4 and Figure 5 As shown, the inverted T-shaped strip track of the track foundation 2 of column B is cast together with the top of the pier 2e it is configured with. Specifically, the bottom plate 2a of the track beam is cast together with the top of the pier 2e. A pier foundation 2f is provided at the bottom of the pier 2e, and the pier 2e is cast together with the pier foundation 2f.

[0048] Embodiment 2

[0049] This embodiment provides a gantry crane, the track foundation of which adopts the large gantry crane track foundation for nuclear facility construction as described in Embodiment 1.

[0050] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A large gantry crane track foundation for nuclear facility construction, characterized in that, Including: Column A track foundation, which is arranged outside the nuclear island foundation pit and has a hollow along the track direction inside as a pipe gallery structure; Column B track foundation, which is arranged inside the nuclear island foundation pit and is supported by pier columns below to make its elevation consistent with that of the Column A track foundation. It has a hollow along the track direction inside as a pipe gallery structure, and there is a space for the pipe gallery to pass between adjacent pier columns; Pipe galleries and pipelines are arranged between the pier column structures, and various pipe galleries and pipelines crossing the track foundation can be arranged below the track beam; The bottom of the pier column is provided with a pier column foundation, and the pier column is cast together with the pier column foundation; There are nuclear island plant basements and other plant basements in the foundation pit, and there is also a slope for the excavation of the plant foundation pit on one side close to the Column A track foundation; There is a pipe gallery perpendicular to the track foundation between the nuclear island plant basement and other plant basements; Both the Column A track foundation and the Column B track foundation include inverted T-shaped strip tracks, and the inverted T-shaped strip tracks of the Column A track foundation have the same structure as those of the Column B track foundation; The space between the flange and the web of the inverted T-shaped strip track is closed by setting a pipe gallery wall to form the pipe gallery structure; Both the Column A track foundation and the Column B track foundation are made of concrete casting, and the inverted T-shaped strip track and the pipe gallery wall are an integral structural member, and the inverted T-shaped strip track is cast together with the pipe gallery wall; The inverted T-shaped strip track of the Column A track foundation includes a foundation beam bottom plate and a foundation beam; The inverted T-shaped strip track of the Column B track foundation is cast together with the top of the pier column configured for it.

2. The large gantry crane track foundation for nuclear facility construction according to claim 1, wherein The inverted T-shaped strip track and the pipe gallery wall are connected together by steel bars.

3. The large gantry crane track foundation for nuclear facility construction according to claim 1, characterized in that The hollow cross-section of the pipe gallery structure is rectangular.

4. The large gantry crane track foundation for nuclear facility construction according to claim 1, characterized in that, The cross-section formed by the pipe gallery structure and the inverted T-shaped strip track is rectangular.

5. A gantry crane, characterized in that, Its track foundation adopts the large gantry crane track foundation for nuclear facility construction as described in any one of claims 1-4.

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