A vertical jacking foundation

Abstract

The utility model relates to a pushing construction technology field, concretely relates to a vertical jacking foundation, including roof, the normal direction of roof is along first direction setting, support frame, support frame is connected in one side of roof, support frame includes crossbeam and stringer, the length of crossbeam is along second direction setting, a plurality of crossbeams are along third direction interval distribution, the length of stringer is along third direction setting, and stringer passes each crossbeam, support leg, support leg is connected in one side of support frame away from roof, and the length of support leg is along first direction setting, arc bottom plate, arc bottom plate is connected in one end of support leg away from support frame, and arc bottom plate is curved to the direction of roof place. The utility model can overcome the prior art needs to pour concrete bottom plate at the bottom of tunnel to form the flat ground that can supply transportation carrier to walk and set up the pushing device, leads to the insufficient of construction efficiency reduction, construction cost rise and will have the negative influence to the drainage effect of drainage system.

Description

Technical Field

[0001] This utility model relates to the field of jacking construction technology, and in particular to a vertical jacking foundation. Background Technology

[0002] Nuclear power plant drainage systems typically consist of transverse tunnels and vertical drainage risers located beneath the seabed, with the tops of the risers needing to protrude from the seabed. To reduce offshore construction work, current technology often employs a jacking construction method for the drainage risers. Jacking construction requires transporting drainage riser segments within the tunnel and pushing these segments upwards. However, tunnels are excavated using tunnel boring machines (TBMs), resulting in a circular cross-section, which makes it difficult to maintain the stability of transport vehicles and jacking devices within the tunnel. The existing solution is to pour a concrete base slab at the bottom of the tunnel after the main tunnel structure is completed, creating a flat surface for transport vehicles to move on and for setting up the jacking device. However, this approach requires repeated formwork assembly / disassembly, concrete pouring, and concrete curing throughout all tunnels, leading to reduced jacking efficiency and increased construction costs. Furthermore, the concrete base slab reduces the tunnel's cross-sectional area, negatively impacting the drainage system's effectiveness. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, which requires pouring a concrete base slab at the bottom of the tunnel to form a flat ground that allows transport vehicles to travel and a jacking device to be installed, resulting in reduced construction efficiency, increased construction costs, and negative impact on the drainage effect of the drainage system. This invention provides a vertical jacking foundation.

[0004] In a first aspect, this utility model provides a vertical jacking foundation, comprising: The top plate, the normal of the top plate is set along the first direction; A support frame is connected to one side of the top slab. The support frame includes crossbeams and longitudinal beams. The length of the crossbeams is set along a second direction, and several crossbeams are distributed at intervals along a third direction. The length of the longitudinal beams is set along a third direction, and the longitudinal beams pass through each crossbeam. Support leg, the support leg is connected to the side of the support frame away from the top plate, and the length of the support leg is set along the first direction; The curved base plate is connected to the end of the support leg away from the support frame, and the curved base plate bends in the direction of the top plate.

[0005] Preferably, the vertical jacking foundation is divided into several segments along a third direction, with at least one segment used to support the jacking device and at least one segment used to transport the riser.

[0006] Preferably, the number of support legs in the segment used to support the jacking device is greater than the number of support legs in the segment used to transport the riser.

[0007] Preferably, the area of ​​the arc-shaped bottom plate in the segment used to support the jacking device is larger than the area of ​​the arc-shaped bottom plate in the segment used to transport the riser.

[0008] Preferably, in at least one segment, the two ends of the longitudinal beam pass through the crossbeams on the corresponding sides, and the two ends of the longitudinal beam are respectively provided with connecting plates, the normal of the connecting plates being arranged along the third direction.

[0009] Preferably, both ends of the crossbeam are arc surfaces, which are coaxial with and have the same diameter as the side of the arc-shaped base plate opposite to the support leg.

[0010] Preferably, the support legs are positioned at the intersection of the longitudinal beams and the transverse beams.

[0011] Preferably, there are at least two longitudinal beams, which are spaced apart along the second direction.

[0012] Preferably, the top plate is also connected to a lifting lug.

[0013] Preferably, at least one of the longitudinal beams, transverse beams, and support legs comprises H-beams.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a vertical jacking foundation, which consists of a top plate, a support frame, support legs, and an arc-shaped bottom plate, forming a foundation structure that is flat on top and round on the bottom. When jacking construction is required, this vertical jacking foundation is placed inside the tunnel, and the top plate forms a flat ground at the bottom of the tunnel. During subsequent construction, pipe sections can be transported and jacking devices can be installed on the top plate. Compared with the prior art, this invention eliminates the need for formwork disassembly and assembly, concrete pouring, and concrete curing, thereby improving the construction efficiency of jacking construction and reducing construction costs. After the jacking construction is completed, this invention can be removed from the bottom of the tunnel, restoring the cross-sectional shape of the tunnel and preventing the invention from encroaching on the internal space of the tunnel and reducing the drainage capacity of the drainage system. At the same time, this invention can be reused in other tunnels, thereby further reducing the construction cost of jacking construction. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a vertical lifting foundation according to the present invention; Figure 2 This is a three-dimensional structural diagram of one segment of a vertical lifting foundation according to this utility model. Figure 1 ; Figure 3 This is a three-dimensional structural diagram of one segment of a vertical lifting foundation according to this utility model. Figure 2 ; Figure 4This is a three-dimensional structural diagram of one segment of a vertical lifting foundation according to this utility model. Figure 3 ; Figure 5 This is a three-dimensional structural diagram of one segment of a vertical lifting foundation according to this utility model. Figure 4 ; Figure 6 This is a schematic diagram of the cross-sectional structure of a vertical lifting foundation of this utility model when installed in a tunnel. Figure 1 ; Figure 7 This is a schematic diagram of the cross-sectional structure of a vertical lifting foundation of this utility model when installed in a tunnel. Figure 2 ; icon: 1-Top plate; 21-Crossbeam; 22-Longitudinal beam; 23-Connecting plate; 3-Supporting leg; 4-Arched bottom plate; 5-Tunnel. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0017] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0019] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0020] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0021] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0022] Example 1 like Figures 1 to 7As shown, a vertical jacking foundation includes a top plate 1, a support frame, support legs 3, and an arc-shaped bottom plate 4. The normal direction of the top plate 1 is set along a first direction. The support frame is connected to one side of the top plate 1 along the first direction. The support frame includes crossbeams 21 and longitudinal beams 22. The length of the crossbeams 21 is set along a second direction. Several crossbeams 21 are distributed at intervals along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The length of the longitudinal beams 22 is set along the third direction. The longitudinal beams 22 pass through each crossbeam 21. The support legs 3 are connected to the side of the support frame away from the top plate 1. The length of the support legs 3 is set along the first direction. The arc-shaped bottom plate 4 is connected to the end of the support legs 3 away from the support frame. The arc-shaped bottom plate 4 is bent in the direction of the top plate 1, that is, the center of the arc-shaped bottom plate 4 is located on the side of it closest to the top plate 1. The side of the arc-shaped bottom plate 4 away from the support legs 3 is used to abut against the inner wall of the tunnel 5.

[0023] exist Figures 1 to 6 The diagram also uses a Cartesian coordinate system to label the various directions in this embodiment, where the X-axis represents the first direction, the Y-axis represents the second direction, and the Z-axis represents the third direction; when this vertical jacking foundation is installed inside tunnel 5, the third direction is parallel to the longitudinal direction of tunnel 5. It should be noted that... Figure 3 and Figure 5 The top plate 1 is hidden to expose the crossbeams 21 and longitudinal beams 22 below it. The longitudinal beams 22 pass through each crossbeam 21. This is only used to describe the positional relationship between the longitudinal beams 22 and the crossbeams 21. It is not used to limit the longitudinal beams 22 to be connected to the crossbeams 21 in a way that passes through them. For example, the longitudinal beams 22 can be cut into multiple segments and connected to two adjacent crossbeams 21 respectively, or the crossbeams 21 can be cut into multiple segments and connected to two adjacent longitudinal beams 22 respectively.

[0024] In this embodiment, the vertical jacking foundation is composed of a top plate 1, a support frame, support legs 3, and an arc-shaped bottom plate 4, forming a foundation structure that is flat on top and round on the bottom. When jacking construction is required, this vertical jacking foundation is placed inside the tunnel 5, so that the side of the arc-shaped bottom plate 4 facing away from the support legs 3 is in contact with the bottom of the tunnel 5. The top plate 1 can then form a flat ground at the bottom of the tunnel 5. During subsequent construction, pipe sections can be transported and jacking devices can be installed on the top plate 1. The load on the top plate 1 will be distributed to the inner wall of the tunnel 5 in sequence through the support frame, support legs 3, and arc-shaped bottom plate 4, thereby ensuring that the stress at the bottom of the tunnel 5 is uniform and that the jacking construction is safe and reliable.

[0025] Compared to existing technologies that require casting concrete slabs after the main structure of Tunnel 5 is completed, the vertical jacking foundation of this embodiment can be prefabricated in the factory in advance, eliminating concrete pouring-related operations such as formwork dismantling, concrete pouring, and concrete curing. This allows it to be placed in place as soon as the main structure of Tunnel 5 is completed, thereby significantly improving the construction efficiency and reducing construction costs of the jacking construction. After the jacking construction is completed, the vertical jacking foundation can be removed from the bottom of Tunnel 5, restoring the cross-sectional shape of Tunnel 5 and preventing the vertical jacking foundation from encroaching on the internal space of Tunnel 5 and reducing the drainage capacity of the drainage system. At the same time, the removed vertical jacking foundation can be reused in other tunnels of Tunnel 5, thereby further reducing the construction cost of the jacking construction.

[0026] In an optional implementation, the vertical jacking foundation is divided into several segments along a third direction, with at least one segment used to support the jacking device and at least one segment used to transport the riser; the connection methods between adjacent segments include, but are not limited to, threaded connections, tenon and mortise connections, or welded connections; for example... Figure 1 As shown, the vertical jacking foundation is divided into four sections along a third direction, two of which are used to support the jacking device, and the other two are used to transport the riser. It should be noted that in actual construction, the total length of the vertical jacking foundation is too long and the number of sections is too large to be conveniently shown in the diagram. Figure 1 The vertical jacking foundation, which includes four segments, is just one example. The actual length and number of segments of the vertical jacking foundation should be determined according to the actual construction needs.

[0027] This embodiment divides the vertical jacking foundation into several smaller segments along a third direction. On the one hand, this reduces the difficulty of manufacturing, transporting, and installing individual segments, thereby improving construction efficiency. On the other hand, it also makes it easier to design different configurations for the two types of segments used to support the jacking device and the transport riser, so as to meet the different performance requirements of supporting the jacking device and transporting the riser, thereby reducing material waste.

[0028] In an optional embodiment, the number of support legs 3 in the segment used to support the jacking device is greater than the number of support legs 3 in the segment used to transport the riser. For example... Figure 2 , Figure 3 and Figure 6 The segments in the middle are used to support the jacking device; it can be seen that such segments are provided with three support legs 3 at intervals below each crossbeam 21; while as... Figure 4 , Figure 5 and Figure 7 The diagram shows a segment used for transporting risers. It can be seen that this type of segment has two support legs 3 spaced apart below each crossbeam 21.

[0029] Since the jacking device generates strong downward pressure when jacking the riser, this embodiment provides more support legs 3 in the segment used to support the jacking device, so that the corresponding segment has higher load-bearing capacity and rigidity to resist the downward pressure generated by the jacking device; while the segment used to transport the riser has relatively fewer support legs 3, which can reduce unnecessary material consumption.

[0030] In an optional embodiment, the area of ​​the arc-shaped base plate 4 in the segment supporting the jacking device is larger than the area of ​​the arc-shaped base plate 4 in the segment used for transporting the riser. For example Figure 2 , Figure 3 and Figure 6 The segments in the middle are used to support the jacking device, and it can be seen that a large, single, curved base plate 4 is set below such segments; while... Figure 4 , Figure 5 and Figure 7 The diagram shows a segment used for transporting risers. It can be seen that this type of segment only has a small arc-shaped base plate 4 at the bottom of each support leg 3.

[0031] Since the jacking device generates strong downward pressure when jacking the riser, this embodiment provides a larger arc-shaped base plate 4 in the segment used to support the jacking device, so that the corresponding segment can distribute the load generated by the jacking device to a larger area of ​​the inner wall of the tunnel 5, thereby reducing the risk of damage to the vertical jacking foundation and the tunnel 5 due to excessive stress; while the arc-shaped base plate 4 in the segment used to transport the riser has a relatively small area, which can reduce unnecessary material consumption.

[0032] In an optional embodiment, in at least one segment, the two ends of the longitudinal beam 22 respectively extend from the corresponding side of the transverse beam 21, and the two ends of the longitudinal beam 22 are respectively provided with connecting plates 23. The normal direction of the connecting plates 23 is arranged along the third direction, and adjacent segments are connected to each other through the connecting plates 23. For example, adjacent connecting plates 23 are directly welded together; or as... Figure 3 As shown, holes are made in the connecting plate 23, and threaded connectors are inserted into the holes to connect two adjacent connecting plates 23.

[0033] This embodiment provides a specific structure for connecting two adjacent segments. On the one hand, the connecting plate 23 can increase the connection area between two adjacent segments, thereby improving the connection reliability between the two adjacent segments. On the other hand, it can keep the longitudinal beam 22 continuous between two adjacent segments without interruption, thereby improving the load-bearing capacity and stiffness of the corresponding segments, making such segments particularly suitable for supporting jacking devices.

[0034] In an optional embodiment, the two ends of the crossbeam 21 are arc surfaces, which are coaxial with and have the same diameter as the side of the arc-shaped base plate 4 that is away from the support leg 3.

[0035] In this embodiment, the arc surfaces at both ends of the crossbeam 21 and the arc surface of the arc-shaped base plate 4 away from the supporting leg 3 belong to the same cylindrical surface, thus enabling... Figure 7 As shown, it fits against the inner wall of tunnel 5, thereby further improving the stability of this embodiment within tunnel 5.

[0036] In an optional embodiment, both ends of the crossbeam 21 can be connected to the inner wall of the tunnel 5. The connection method includes, but is not limited to, threaded connection, tenon and mortise connection or welding connection, so as to further enhance the stability of this embodiment in the tunnel 5.

[0037] In an optional embodiment, the support leg 3 is positioned at the intersection of the longitudinal beam 22 and the transverse beam 21.

[0038] This embodiment can alleviate the stress concentration at the intersection of the longitudinal beam 22 and the transverse beam 21, thereby improving the structural safety, load-bearing capacity and service life of this embodiment.

[0039] It should be noted that the location of the support leg 3, including the intersection of the longitudinal beam 22 and the transverse beam 21, means that the support leg 3 can be installed at the intersection of the longitudinal beam 22 and the transverse beam 21, but the support leg 3 can also be installed at other locations on the support frame; for example... Figure 3 As shown, not only are there support legs 3 at the intersection of the longitudinal beam 22 and the transverse beam 21, but there are also additional support legs 3 in the middle of the transverse beam 21.

[0040] In an optional embodiment, the number of longitudinal beams 22 is at least two, and the longitudinal beams 22 are spaced apart along the second direction.

[0041] Since the transport vehicle generally includes two rows of wheels and the jacking device generally includes two rows of hydraulic cylinders, this embodiment recommends setting the number of longitudinal beams 22 to two rows as well. This will help the support frame better bear the loads from the transport vehicle and the jacking device, reduce the flexural stress in the top plate 1 and the support frame, and thus improve the safety and durability of this embodiment.

[0042] In an optional embodiment, a lifting lug is also connected to the top plate 1.

[0043] This embodiment facilitates the hoisting of the vertical jacking foundation by the workers; the lifting lugs and the top plate 1 can be detachably connected, such as mortise and tenon joints or threaded connections, so that the lifting lugs can be removed after the hoisting operation is completed, preventing the lifting lugs from interfering with the operation of the jacking device or transport vehicle; or the lifting lugs can be directly welded to the top plate 1 and cut off directly after the hoisting operation is completed.

[0044] In an optional embodiment, at least one of the longitudinal beam 22, the cross beam 21, and the support leg 3 includes H-beams to ensure that the longitudinal beam 22, the cross beam 21, and the support leg 3 have sufficient load-bearing capacity and rigidity.

[0045] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical lifting foundation, characterized in that, include: Top plate (1), the normal of the top plate (1) is arranged along the first direction; A support frame is connected to one side of the top plate (1). The support frame includes a crossbeam (21) and a longitudinal beam (22). The length of the crossbeam (21) is set along a second direction, and a plurality of the crossbeams (21) are spaced apart along a third direction. The length of the longitudinal beam (22) is set along a third direction, and the longitudinal beam (22) passes through each of the crossbeams (21). Support leg (3), the support leg (3) is connected to the side of the support frame away from the top plate (1), and the length of the support leg (3) is set along a first direction; An arc-shaped base plate (4) is connected to one end of the support leg (3) away from the support frame, and the arc-shaped base plate (4) is bent toward the direction of the top plate (1).

2. The vertical jacking foundation according to claim 1, characterized in that, The vertical jacking foundation is divided into several segments along a third direction, at least one of the segments being used to support the jacking device and at least one of the segments being used to transport the riser.

3. A vertical jacking foundation according to claim 2, characterized in that, The number of support legs (3) in the segment used to support the jacking device is greater than the number of support legs (3) in the segment used to transport the riser.

4. A vertical jacking foundation according to claim 2, characterized in that, The area of ​​the arc-shaped base plate (4) in the segment used to support the jacking device is greater than the area of ​​the arc-shaped base plate (4) in the segment used to transport the riser.

5. A vertical jacking foundation according to claim 2, characterized in that, In at least one of the segments, the two ends of the longitudinal beam (22) respectively protrude from the cross beam (21) on the corresponding side, and the two ends of the longitudinal beam (22) are respectively provided with connecting plates (23), and the normal of the connecting plates (23) is arranged along the third direction.

6. A vertical jacking foundation according to any one of claims 1 to 5, characterized in that, The two ends of the crossbeam (21) are arc surfaces, which are coaxial with and have the same diameter as the side of the arc-shaped base plate (4) that is away from the support leg (3).

7. A vertical jacking foundation according to any one of claims 1 to 5, characterized in that, The support leg (3) is positioned at the intersection of the longitudinal beam (22) and the transverse beam (21).

8. A vertical jacking foundation according to any one of claims 1 to 5, characterized in that, The number of longitudinal beams (22) is at least two, and the longitudinal beams (22) are distributed at intervals along the second direction.

9. A vertical jacking foundation according to any one of claims 1 to 5, characterized in that, The top plate (1) is also connected to a lifting lug.

10. A vertical jacking foundation according to any one of claims 1 to 5, characterized in that, At least one of the longitudinal beam (22), the transverse beam (21), and the support leg (3) includes an H-beam.

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