Large-scale assembled foundation platform and construction method thereof

Abstract

The application discloses a large-scale assembled foundation platform and a construction method thereof. The large-scale assembled foundation platform comprises a functional box girder group and a foundation embedded part; the functional box girder group comprises a main bearing box girder, a secondary bearing box girder, a lateral auxiliary box girder and a public engineering box girder, and the functional box girders are combined according to requirements through bolts; and the foundation embedded part comprises a transition welding plate connected with the bottom of the functional box girder group and a pre-embedded plate embedded in concrete. Compared with a traditional construction method, the large-scale foundation platform and the construction method thereof have the advantages of high structural strength, high plane precision, disassembly and assembly, iteration, flexible use, shortened manufacturing period, cost saving, reduced occupation time of a large-scale crane and the like, and are particularly suitable for occasions with large on-site construction difficulty and lack of construction machines.

Description

Technical Field

[0001] This invention relates to the field of large-scale basic platform construction technology, specifically to a large-scale modular basic platform and its construction method. Background Technology

[0002] Currently, the construction of large foundation platforms is typically done directly on-site. This involves excavation, laying of steel mesh, fixing of embedded components, and then pouring concrete layer by layer to complete the foundation platform. However, existing construction methods involve all work on-site, requiring a specific construction sequence, consuming large amounts of concrete, and necessitating layer-by-layer pouring and curing, resulting in a long construction period. Furthermore, the entire platform is a fixed structure; once completed, its structure cannot be altered, and internal embedded piping needs to be planned in advance. Once the intended use is achieved, the platform loses its value, leading to wasted funds. Therefore, shortening the construction period while reducing costs is a key issue that needs to be addressed in the construction of large foundation platforms. Summary of the Invention

[0003] This invention addresses the problems of long construction cycles and high costs associated with large-scale foundation platforms by proposing a large-scale modular foundation platform and its construction method. This method can significantly shorten the construction cycle of large-scale foundation platforms, offers flexible installation, allows for disassembly and reassembly, enables reuse, and significantly reduces operating costs.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] This invention provides a large-scale prefabricated foundation platform, comprising functional box girder assemblies and foundation embedded parts. The functional box girder assemblies include main load-bearing box girder, secondary load-bearing box girder, lateral auxiliary box girder, and utility box girder. The functional box girder assemblies are combined according to requirements via inter-beam connecting bolts. The foundation embedded parts include a transition welding plate and an embedded plate. The transition welding plate is located at the bottom of the functional box girder assemblies, and the embedded plate is located below the transition welding plate and embedded in the concrete foundation.

[0006] As a further embodiment of the present invention, the functional box girder is a hollow welded steel plate structure, comprising six steel plates: an upper steel plate, a lower steel plate, a left steel plate, a right steel plate, and two end steel plates. The interior is constructed of steel plates welded into a grid pattern. The lower part of the upper steel plate is provided with reinforcing ribs distributed at certain intervals. The left steel plate, the right steel plate, and the two end steel plates are provided with mounting bolt holes at their connections with other functional box girder structures. The lower steel plate is provided with mounting holes for connection with the transition welded plate. Manholes are provided on the left steel plate, the right steel plate, the two end steel plates, and the grid pattern steel plate.

[0007] As a further embodiment of the present invention, a main load-bearing zone is provided on the steel plate of the main load-bearing box girder, the steel plate of the main load-bearing zone is thickened, the grid below is densified and a main load-bearing zone reinforcing rib is provided.

[0008] As a further embodiment of the present invention, the steel plates on the secondary load-bearing box girder and the lateral auxiliary box girder bear the load of a typical truck.

[0009] As a further embodiment of the present invention, a cable well is provided on the steel plate of the public utility box girder, and pipes, cables and other facilities are installed inside the box girder.

[0010] As a further embodiment of the present invention, the transition welding plate is provided with threaded holes and is connected to the lower steel plate of the functional box girder assembly through bottom connecting bolts.

[0011] As a further embodiment of the present invention, the embedded plate is provided with long anchor bars, which are embedded in the concrete and connected to the transition welding plate by welding.

[0012] Another aspect of the present invention provides a method for constructing the aforementioned large-scale modular foundation platform, comprising the following steps:

[0013] Functional box girder fabrication: After selecting a site with a large gantry crane and leveling the foundation, steel plates are welded together using a crane to fabricate the components. After the dimensions and welds are inspected and approved, the components are painted for rust prevention.

[0014] Transportation of functional box girders: The components are hoisted onto flatbed trucks and secured using a crane, and then transported to the construction site by road.

[0015] Assembly and fixing of functional box girders: Use a mobile crane to lift each box girder onto the foundation embedded parts at the corresponding position, then use the beam connecting bolt group to connect each box girder from the inside, and finally use the bottom connecting bolts to connect to the transition welding plate through the mounting holes of the lower steel plate of each box girder group to achieve overall fixing.

[0016] Compared with existing technologies, the advantages of this invention are as follows: 1. The multi-segment box girder assembly method with different functions results in fast installation speed; 2. The method of using pre-embedded plates for leveling, adjusting and placing transition welding plates, and finally welding ensures the accuracy of the foundation; 3. The box girder can be manufactured in different locations, and the volume of each segment is smaller, making it easier to find suitable manufacturing sites and equipment, facilitating processing and ensuring processing accuracy. The overall planar accuracy after assembly is high, and it can be built simultaneously with the concrete foundation, greatly shortening the construction cycle; 4. The box girder has a hollow structure with internal steel plate grid distribution support, increasing the overall structural strength and rigidity. Local reinforcement can be added as needed, and manholes are opened in the internal vertical plates to facilitate construction and later maintenance operations, while also reducing weight, saving costs and reducing transportation burden. The manholes also serve as channels for pipes and cables; 5. The whole is assembled, disassembled, and functional segments can be added or removed according to functional requirements, making it expandable and iterative. Attached Figure Description

[0017] Figure 1 This is an overall perspective view of the present invention;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the present invention;

[0019] Figure 3 This is a basic connection structure diagram of the present invention;

[0020] In the diagram: 1. Secondary load-bearing box girder; 2. Lateral auxiliary box girder; 5. Public works box girder; 6. Main load-bearing box girder; 11. Upper steel plate of box girder; 52. Cable well of public works box girder; 62. Inspection well of main load-bearing box girder; 63. Reinforcing rib of main load-bearing zone; 64. Mesh steel plate; 65. Inter-beam connecting bolt group; 66. Bottom connecting bolt; 67. Specially thickened and enlarged pressure plate gasket; 68. Lower steel plate of box girder; 69. Transition welding plate; 70. Embedded plate; 71. Concrete foundation. Detailed Implementation

[0021] The technical solution of this patent will be further described in detail below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Elements, structures, and features in one embodiment can also be beneficially combined with other embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0022] In the description of this patent, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and 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 this patent.

[0023] For reference Figure 1 A large prefabricated foundation platform 3 includes functional box girder assemblies and foundation embedded parts. The functional box girder assemblies include main load-bearing box girder 6, secondary load-bearing box girder 1 and 4, lateral auxiliary box girder 2 and 3, and utility box girder 5. The functional box girder assemblies are combined according to requirements by inter-beam connecting bolt groups 65. The foundation embedded parts include transition welding plate 69 and embedded plate 70. The transition welding plate 69 is located at the bottom of the functional box girder assemblies, and the embedded plate 70 is located below the transition welding plate 69 and embedded in the concrete foundation 71. The functional box girder 1, 2, 3, 4, 5, and 6 are hollow welded steel plate structures, each consisting of six steel plates (upper, lower, left, right, and both ends). The interior is constructed of welded steel plates forming a grid. Reinforcing ribs are arranged at regular intervals below the upper steel plates 11, 21, 31, 41, 51, and 61. Inter-beam connecting bolt groups 65 are provided at the points where the left, right, and both end steel plates connect to other functional box girder girders. The lower steel plate 68 has mounting holes for connection to the transition welded plate 69. Manholes are provided on the left, right, and both end steel plates and the grid-shaped steel plate 64. The upper steel plate of the main load-bearing box girder 6 has a main load-bearing zone, which is thickened, has a denser grid underneath, and is reinforced with main load-bearing zone reinforcing ribs 63. The upper steel plates 11, 21, 31, and 41 of the secondary load-bearing box girder and the lateral auxiliary box girder bear the load of a typical freight truck. Cable wells are provided on the upper steel plate 51 of the public utility box girder, and pipes, cables and other facilities are installed inside the box girder. The transition welding plate 69 has threaded holes and is connected to the lower steel plate 68 of the functional box girder via bottom connecting bolts 66. The embedded plate 70 is equipped with long anchor bars, is embedded in the concrete foundation 71, and is connected to the transition welding plate 69 by welding.

[0024] The functional box girders 1, 2, 3, 4, 5, and 6 are hollow welded steel plate structures. Their external shape comprises six steel plates (top, bottom, left, right, and both ends), with the interior formed by welded steel plates into a grid pattern. Manholes are provided on the grid-like steel plate 64 and the four side steel plates, facilitating construction and subsequent maintenance while reducing weight, saving costs and reducing transportation burden. The manholes also serve as channels for pipes and cables. The overall structure exhibits good rigidity, light weight, and relatively smaller dimensions, reducing requirements for construction sites and processing equipment, making processing easier and ensuring precision. The box girders can be prefabricated for different functions as needed, and are connected to other functional box girders on the side via inter-beam connections on the contact surfaces. The bolt group 65 is connected and tightened. The bottom surface is connected to the embedded plate 70 by the bottom connecting bolt 66. The lower steel plate 68 has a large round hole, on which a specially thickened and enlarged pressure plate 67 is placed. The bottom connecting bolt 66 passes through the specially thickened and enlarged pressure plate 67 and the large round hole on the lower steel plate 68 and is screwed onto the transition welding plate 69 welded to the embedded plate 70. The large round hole on the lower steel plate 68 can compensate for the manufacturing and installation errors of functional box beams 1, 2, 3, 4, 5, and 6. In addition, it can also compensate for the thermal expansion and contraction of the box beams. At the position where thermal expansion and contraction compensation is required, the preload of the bottom connecting bolt 66 is appropriately reduced to reduce friction and allow slippage.

[0025] The secondary load-bearing box girders 1 and 4 have a weaker load-bearing capacity than the primary load-bearing box girders, and their internal mesh and reinforcing ribs are also relatively sparse, which can meet certain load-bearing requirements and are set according to actual load-bearing needs.

[0026] The lateral auxiliary box beams 2 and 3 mainly serve a connecting function. The density of their internal grids and reinforcing ribs is relatively sparse compared to the secondary load-bearing box beams 1 and 4, and is set according to the actual load-bearing conditions.

[0027] The utility box girder 5 mainly serves to connect and pass through pipelines and cables. The density of the internal grid and reinforcing ribs is similar to that of the lateral auxiliary box girder 2 and 3, and is set according to the actual load-bearing conditions. Multiple utility box girder cable wells 52 are set on the upper steel plate 51 to facilitate the entry and exit of pipelines.

[0028] The main load-bearing box girder 6 is the main load-bearing component. The main load-bearing area 61 of the upper steel plate is thickened, and the grid and reinforcing ribs below are densified. The other non-main load-bearing areas are set according to the actual load-bearing requirements, referring to the auxiliary box girder 2 and 3. The main load-bearing box girder inspection well 62 is set on the upper steel plate near both ends to facilitate subsequent maintenance.

[0029] The foundation embedded parts include a transition welding plate 69 and an embedded plate 70. The embedded plate 70 has long anchor bars welded to its bottom. It is placed in the foundation pit before the concrete foundation 71 is poured. After the position is adjusted, it is fixed and stable. Then the concrete is poured to connect it to the concrete foundation. After the concrete has cured, the transition welding plate 69 is placed on the embedded plate 70. After the position is adjusted, it is welded firmly to the embedded plate 70. The transition welding plate 69 has threaded holes pre-processed on it for the connection and fixation of the bottom connecting bolts 66.

[0030] Another aspect of the present invention provides a method for constructing a large-scale modular foundation platform using the above embodiments, comprising the following steps:

[0031] Functional box girder fabrication: After selecting a site with a large gantry crane and leveling the foundation, steel plates are welded together using a crane to fabricate the components. After the dimensions and welds are inspected and approved, the components are painted for rust prevention.

[0032] Transportation of functional box girders: The components are hoisted onto flatbed trucks and secured using a crane, and then transported to the construction site by road.

[0033] Assembly and fixing of functional box girder: Use a mobile crane to lift each box girder onto the foundation embedded parts at the corresponding position, then use the beam connecting bolt group 65 to connect each box girder from the inside, and finally use the bottom connecting bolt 66 to connect to the transition welding plate 68 through the mounting holes of the steel plate 68 under each box girder to achieve overall fixing.

[0034] This invention features an ingenious structural design with high structural strength and planar precision. It employs multi-segment modular construction and assembly, configuring different functional modules according to functional requirements. Each module can be processed separately, allowing for flexible combination, disassembly, and rapid installation. The overall functionality is expandable and iterative. Concrete foundations and foundation embedded parts can be constructed in parallel, greatly shortening the entire construction cycle. Furthermore, it is reusable, significantly reducing construction costs and possessing immense application value.

[0035] This invention is not limited to the above-described embodiments. Any embodiment that uses a similar structure and method to achieve the purpose of this invention should be within the protection scope of this invention.

Claims

1. A large-scale assembled foundation platform, characterized by: It comprises a functional box beam group and a foundation embedded part, the functional box beam group comprises a main load-bearing box beam, a secondary load-bearing box beam, a lateral auxiliary box beam and a public engineering box beam, each functional box beam is combined according to requirements through beam connecting bolts, the foundation embedded part comprises a transition welding plate and a embedded plate, the transition welding plate is located at the bottom of the functional box beam group, and the embedded plate is located below the transition welding plate and embedded in a concrete foundation. The functional box beam is a steel plate welded hollow structure, comprising six steel plates, i.e., an upper steel plate, a lower steel plate, a left steel plate, a right steel plate and two end steel plates, the inside is welded into a grid shape, the upper steel plate is provided with reinforcing ribs distributed at a certain interval, the left steel plate, the right steel plate and the two end steel plates are provided with mounting bolt holes at the connection positions with other functional box beams, the lower steel plate is provided with mounting holes connected with the transition welding plate, and manholes are formed in the left steel plate, the right steel plate, the two end steel plates and the grid-shaped steel plate.

2. A large-scale assembled foundation platform according to claim 1, characterized in that: The upper steel plate of the main load-bearing box beam is provided with a main load-bearing area, the main load-bearing area steel plate is thickened, the lower grid is densified and provided with main load-bearing area reinforcing ribs.

3. A large-scale assembled foundation platform according to claim 1, characterized in that: The upper steel plate of the secondary load-bearing box beam and the lateral auxiliary box beam bears general truck load.

4. A large-scale assembled foundation platform according to claim 1, characterized in that: The upper steel plate of the public engineering box beam is provided with a cable well, and the box beam is provided with pipelines and cable facilities.

5. A large-scale assembled foundation platform according to claim 1, characterized in that: The transition welding plate is provided with threaded holes, and the lower steel plate of the functional box beam group is connected through bottom connecting bolts.

6. A large-scale assembled foundation platform according to claim 1, characterized in that: The embedded plate is provided with long anchor bars and embedded in a concrete foundation and connected with the transition welding plate through welding.

7. A method of constructing a large-scale modular foundation platform, characterized by, The large-scale assembled foundation platform is the large-scale assembled foundation platform in any one of claims 1-6, and the construction method comprises the following steps: functional box beam manufacturing: a site provided with a large gantry crane is selected, after the foundation is leveled, a steel plate is spliced to manufacture a component by using a crane, the component is painted after size and welding seam inspection, functional box beam transportation: the component is hoisted to a flat car by using the crane and fixed, and then transported to a site through a road; site foundation construction: a site is excavated, a reinforcement mesh is laid, a bottom layer is poured, an embedded plate is placed and leveled, concrete is continuously poured, a transition welding plate is finally placed and fixed by welding after position adjustment; functional box beam assembly and fixation: each box beam is hoisted to a corresponding foundation embedded part by using a crane, then each box beam is connected from inside by using beam connecting bolts, and finally the bottom connecting bolts are connected with the transition welding plate through the mounting holes of the lower steel plates of the box beams, so that the whole is fixed.

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