Ship lift tower structure with sparse pile raft foundation and layered strong restrained box beam

Abstract

The present invention relates to the fields of water conservancy engineering and shipping engineering, and discloses a ship lift tower column structure with a sparse pile raft foundation and a layered strong constraint box beam, comprising a tower column body, the tower column body comprising two tower column groups that are symmetrical on both sides, the space between the two tower column groups forming a ship compartment, a raft foundation being arranged directly below the tower column body, a sparse pile group being arranged directly below the raft foundation, a plurality of layers of connecting box beam groups being arranged between the middle and upper parts of the two tower column groups, each layer of connecting box beam groups comprising two connecting box beams located at the most upstream and the most downstream, a top beam group comprising a plurality of top beams being arranged between the tops of the two tower column groups, and the two ends of the top beams being fixedly connected to the two tower column groups. The present invention provides a ship lift tower column structure with a sparse pile raft foundation and a layered strong constraint box beam, effectively controlling the uneven settlement of the ship lift foundation and its later rheology, reducing the lateral deformation of the structure, avoiding the torsional deformation of the tower column, and reducing the stress of each key part of the ship lift structure.

Description

Technical Field

[0001] The invention relates to the fields of water conservancy engineering and water transport engineering, and in particular to a ship lift tower structure provided with a sparse pile raft foundation and a layered strong constraint box beam. Background Art

[0002] Navigation structures such as ship locks and ship lifts are infrastructure to overcome the head difference of water conservancy, hydropower and water transport hub projects and ensure the normal navigation of cascade developed rivers. For high-head navigation facilities, vertical ship lifts are increasingly widely used as the main type of navigation structures, such as the ship lifts of hub projects such as the Three Gorges, Geheyan, Gaobazhou, Tingzikou, and Xiangjiaba.

[0003] With the rapid development of the national economy, the demand for the construction of navigation facilities in the mountainous and canyon areas in the southwest of my country is increasing, and the number of navigation facilities with ultra-high water heads is also increasing. The southwest region is mostly a high-seismic intensity area. The tower of the high-lift ship lift is relatively high, and the structural rigidity is relatively small. The various mechanical equipment arranged in the machine room at the top of the tower is of large mass. The dynamic effects of earthquakes, wind vibrations, etc. are significant. When encountering soft rock foundations, the stress and deformation characteristics of the tower structure will be more complicated.

[0004] In addition, if the upstream and downstream of the vertical ship lift are connected to a large navigable aqueduct, due to the large difference in stiffness between the two structures, the problem of lateral deformation coordination becomes prominent, which may affect the safe operation of the waterstop and the navigable aqueduct structure may also produce adverse secondary stresses.

[0005] Moreover, the stiffness of the ship lift tower structure itself in the downstream and transverse directions is also quite different, and the plane torsion effect is relatively large. Therefore, in order to ensure the safety of the ship lift tower structure and the normal operation of the equipment, and to ensure the reliability of the connection between the ship lift and the adjacent structure, it is necessary to develop a new ship lift structure to solve a series of technical problems such as uneven settlement of the vertical ship lift foundation, deformation of the super-high tower structure, plane torsion effect of the tower, and high stress of the connecting beams at the top of the left and right towers. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies of the above-mentioned technologies and to provide a ship lift tower structure with a sparsely piled raft foundation and a layered strongly constrained box girder, so as to effectively control the uneven settlement of the ship lift foundation and its subsequent rheology, reduce the lateral deformation of the structure, avoid torsional deformation of the tower, and reduce the stress in key parts of the ship lift structure.

[0007] To achieve the above-mentioned purpose, the present invention designs a ship lift tower structure with a sparse pile raft foundation and a layered strongly constrained box beam, including a tower body, which is a component for transmitting the load of the ship lift equipment, the tower body includes two left-right symmetrical tower groups, the space between the two tower groups forms a cabin room for supporting the up and down lifting of the cabin, a raft foundation is provided directly below the tower body, which is used to equalize the deadweight load of the tower group and the equipment load transmitted through the tower group and then transmit them to the foundation, a sparse pile group including a plurality of sparse piles is provided directly below the raft foundation, the sparse piles are inserted into the ship lift foundation, and the sparse pile group can improve the bearing capacity of the ship lift foundation while making the raft foundation and its upper load more evenly distributed. Transfer to the foundation, a plurality of layers of connecting box beam groups are arranged between the upper and middle parts of the two tower column groups, each layer of the connecting box beam group includes two connecting box beams respectively located at the most upstream and the most downstream, and the two ends of the connecting box beam are respectively fixedly connected to the two tower column groups, and the connecting box beam is the main component connecting the left and right tower column groups into a frame system, which is used to increase the overall lateral stiffness of the ship lift structure, and a top beam group including a plurality of top beams is arranged between the tops of the two tower column groups, and the two ends of the top beam are respectively fixedly connected to the two tower column groups, which is used to transfer various equipment loads in the machine room at the top of the tower column group to the tower column group, and is a secondary component connecting the left and right tower column groups into a frame system.

[0008] Preferably, the raft foundation comprises a bottom plate and four bottom plate longitudinal walls and two bottom plate transverse walls arranged on the bottom plate, wherein two of the bottom plate longitudinal walls and two of the bottom plate transverse walls are located on four sides of the bottom plate, the two bottom plate longitudinal walls and two bottom plate transverse walls located on the left side are combined to form a tower column foundation of one tower column group, which is used to form the foundations of two tower columns in the tower column group on the left side into a whole, the two bottom plate longitudinal walls and two bottom plate transverse walls located on the right side are combined to form the tower column foundation of another tower column group, which is used to form the foundations of two tower columns in the tower column group on the right side into a whole, and the two bottom plate longitudinal walls located on the inside are combined to form a tower column foundation of another tower column group, which is used to form the foundations of two tower columns in the tower column group on the right side into a whole. The plate longitudinal wall and the two bottom plate transverse walls are combined to form an enclosed cavity connected to the cabin room for the cabin to be lifted up and down. The bottom plate transverse wall located downstream is provided with a navigation groove at the position of the enclosed cavity for ships to enter and exit the cabin. Each of the tower column foundations is provided with a plurality of bottom plate transverse partitions parallel to the bottom plate transverse walls. The bottom plate transverse partitions are used to improve the lateral stability of the bottom plate longitudinal wall and to balance the weights of the stairwell, elevator shaft, pipeline shaft and fire shaft. The two bottom plate longitudinal walls located on the outside have the same thickness and are symmetrical about the enclosed cavity, and the two bottom plate longitudinal walls located on the inside have the same thickness and are symmetrical about the enclosed cavity.

[0009] Preferably, the sparse pile group includes four rows of sparse piles arranged in parallel, and the four rows of sparse piles are respectively located directly below the four longitudinal walls of the bottom plate, and are used to bear the remaining concentrated load after the load transmitted from the raft foundation to the tower column body is equalized, so as to maximize the role of the sparse piles. The sparse piles in each row of the sparse piles are symmetrically arranged in the upstream and downstream directions, and the lengths of the sparse piles in the two rows of the sparse piles located on the outside are greater than the lengths of the sparse piles in the two rows of the sparse piles located on the inside, so as to maximize the role of the sparse piles in resisting the lateral unbalanced load acting on the tower column body.

[0010] Preferably, each of the tower column groups includes two tower columns which are symmetrically arranged in the upstream and downstream directions, and the two tower columns in each of the tower column groups are connected by an external shear wall and an internal shear wall arranged on the top. The tower columns are surrounded by two tower column longitudinal walls and a tower column transverse wall, and a plurality of tower column transverse partition walls parallel to the tower column transverse walls are arranged inside the tower column. The tower column longitudinal walls, tower column transverse walls and tower column transverse partition walls are arranged corresponding to the bottom plate longitudinal walls, bottom plate transverse walls and bottom plate transverse partition walls of the valve plate foundation.

[0011] Preferably, the connecting box girder is enclosed by a top flange, a bottom flange, an upstream web and a downstream web, and a plurality of connecting box girder cross diaphragms parallel to the top flange are arranged inside the connecting box girder to increase the lateral stability of the upstream web and the downstream web.

[0012] Preferably, the thickness and position of the upstream web of the connecting box girder located most upstream correspond to the thickness and position of the tower column cross wall located upstream of the tower column, the thickness and position of the downstream web of the connecting box girder located most upstream correspond to the thickness and position of the first tower column cross partition wall located downstream of the tower column, the thickness and position of the upstream web of the connecting box girder located most downstream correspond to the thickness and position of the first tower column cross partition wall located upstream of the tower column, and the thickness and position of the downstream web of the connecting box girder located most downstream correspond to the thickness and position of the tower column cross wall located downstream of the tower column, so as to maximize the fixed end stiffness at both ends of the connecting box girder.

[0013] Preferably, the number of top beams in the top beam group is equal to the sum of the number of tower column cross walls and tower column cross partitions in the tower column group, and the layout position and width of the top beams correspond to the layout position and thickness of the tower column cross walls and tower column cross partitions, so as to maximize the fixed end stiffness at both ends of the top beams.

[0014] Preferably, the arrangement elevation and thickness of the top flange and the bottom flange of the connecting box beam correspond to the arrangement height and thickness of the horizontal plate arranged inside the tower column, that is, the height of the connecting box beam must take into account the cross-sectional stiffness requirements of the beam itself, and must also be coordinated with the arrangement of the horizontal plate inside the tower column, so as to maximize the fixed end stiffness at both ends of the connecting box beam.

[0015] Preferably, the connecting box girder located at the topmost layer upstream also includes an upstream wall type continuous corbel located above the outer side of the upstream web and a downstream wall type continuous corbel located above the outer side of the downstream web, the upstream wall type continuous corbel is used to bear the load transmitted from the navigable aqueduct, and the downstream wall type continuous corbel is used together with the top flange to arrange the upper gate of the ship lift.

[0016] Preferably, the top beam is a variable-section beam, and the end section height of the top beam is 50% to 70% greater than the mid-span section height so as to increase the shear resistance of the end section. The upper and middle parts of the tower column are provided with multiple layers of external shear walls and internal shear walls.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The use of sparse pile raft foundation can significantly improve the overall stiffness of the foundation and effectively reduce and control the uneven settlement of the ship lift foundation and its later rheology;

[0019] 2. By setting up multiple layers of rigid connecting box beams to form a layered strongly constrained full-cylinder tower column, while increasing the transverse dimension of the tower column structure, the transverse stiffness of the tower column is significantly increased, effectively reducing the top displacement of the ship lift tower column structure, meeting the requirements for coordinated deformation of the ship lift tower column and the navigable aqueduct in the transverse direction, reducing the secondary stress of the navigable aqueduct, and ensuring water-stopping safety;

[0020] 3. After the lateral rigidity of the ship lift tower structure is increased, the stress of key parts such as the plate beam structure of the machine room at the top of the tower is effectively reduced, ensuring the safety of the tower structure;

[0021] 4. In order to set the box beam on the downstream tower of the ship lift, the downstream tower must be extended to the outside of the boat room in the downstream direction. The extended downstream tower can be arranged symmetrically with the upstream tower, and the downstream dimension of the machine room at the top of the tower can be increased, and the cantilever of the original machine room floor to the downstream can be cancelled, which is also conducive to the arrangement of the lower lock head of the vertical ship lift;

[0022] 5. The symmetrically arranged tower column structure and its strongly constrained box beam effectively avoid the torsional deformation of the tower column structure under the action of lateral load, ensuring the safe operation of various mechanical equipment on the top of the tower column;

[0023] 6. The present invention effectively controls the uneven settlement of the ship lift foundation and its subsequent rheology, reduces the lateral deformation of the structure, avoids torsional deformation of the tower column, and reduces the stress in key parts of the ship lift structure, thus solving the technical difficulties faced in constructing an ultra-high head vertical ship lift on an extremely soft rock foundation, and has a high value for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a ship lift tower structure provided with a sparse pile raft foundation and a layered strongly constrained box beam according to the present invention;

[0025] Figure 2 for Figure 1 Structural diagram of the middle raft foundation;

[0026] Figure 3 for Figure 1 Structural diagram of the middle tower column group;

[0027] Figure 4 for Figure 1 Structural schematic diagram of the middle connecting box girder;

[0028] Figure 5 for Figure 1 Structural diagram of the topmost connecting box girder in the middle and upper reaches;

[0029] Figure 6 for Figure 1 Schematic diagram of the structure of the middle tower column group and the top beam.

[0030] The components in the figure are numbered as follows:

[0031] Tower column group 1, tower column 11, external shear wall 12, internal shear wall 13, tower column longitudinal wall 14, tower column transverse wall 15, tower column transverse diaphragm 16, cabin room 2, raft foundation 3, bottom plate 31, bottom plate longitudinal wall 32, bottom plate transverse wall 33, bottom plate transverse diaphragm 34, sparse piles 4, connecting box girder 5, top flange 51, bottom flange 52, upstream web 53, downstream web 54, connecting box girder transverse diaphragm 55, upstream wall continuous corbel 56, downstream wall continuous corbel 57, top beam 6, enclosed cavity 7, navigation channel 8. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1As shown, the present invention provides a ship lift tower structure with a sparse pile raft foundation and a layered strongly constrained box beam, including a tower body, the tower body including two tower groups 1 symmetrically on the left and right, the space between the two tower groups 1 forming a cabin room 2, a raft foundation 3 is provided directly below the tower body, a sparse pile group including a plurality of sparse piles 4 is provided directly below the raft foundation 3, the sparse piles 4 are inserted into the ship lift foundation, a plurality of layers of connecting box beam groups are provided between the middle and upper parts of the two tower groups 1, each layer of connecting box beam groups includes two connecting box beams 5 located at the most upstream and the most downstream respectively, the two ends of the connecting box beam 5 are respectively fixedly connected to the two tower groups 1, a top beam group including a plurality of top beams 6 is provided between the tops of the two tower groups 1, the two ends of the top beam 6 are respectively fixedly connected to the two tower groups 1.

[0034] like Figure 2 As shown, the raft foundation 3 includes a bottom plate 31 and four bottom plate longitudinal walls 32 and two bottom plate transverse walls 33 arranged on the bottom plate 31, wherein the two bottom plate longitudinal walls 32 and the two bottom plate transverse walls 33 are located on four sides of the bottom plate 31, the two bottom plate longitudinal walls 32 and the two bottom plate transverse walls 33 located on the left side enclose a tower column foundation of a tower column group 1, and the two bottom plate longitudinal walls 32 and the two bottom plate transverse walls 33 located on the right side enclose a tower column foundation of another tower column group 1. The two inner bottom plate longitudinal walls 32 and the two inner bottom plate transverse walls 33 enclose an enclosed cavity 7 connected to the cabin chamber 2. The downstream bottom plate transverse wall 33 is provided with a navigation groove 8 at the position of the enclosed cavity 7. Each tower column foundation is provided with a plurality of bottom plate transverse partition walls 34 parallel to the bottom plate transverse wall 33. The two outer bottom plate longitudinal walls 32 have the same thickness and are symmetrical about the enclosed cavity 7, and the two inner bottom plate longitudinal walls 32 have the same thickness and are symmetrical about the enclosed cavity 7.

[0035] Among them, Figure 2 As shown, the sparse pile group includes four rows of sparse piles arranged in parallel, and the four rows of sparse piles are respectively located directly below the four bottom plate longitudinal walls 32. The sparse piles 4 in each row of sparse piles are symmetrically arranged in the upstream and downstream directions, and the length of the sparse piles 4 in the two outer rows of sparse piles is greater than the length of the sparse piles 4 in the two inner rows of sparse piles.

[0036] like Figure 3 As shown, each tower column group 1 includes two tower columns 11 symmetrically arranged in the upstream and downstream directions. The two tower columns 11 in each tower column group 1 are connected by an external shear wall 12 and an internal shear wall 13 arranged at the top. The tower columns 11 are surrounded by two tower column longitudinal walls 14 and a tower column transverse wall 15. A plurality of tower column transverse partition walls 16 parallel to the tower column transverse walls 15 are arranged inside the tower column 11. The tower column longitudinal walls 14, tower column transverse walls 15 and tower column transverse partition walls 16 are arranged corresponding to the bottom plate longitudinal walls 32, bottom plate transverse walls 33 and bottom plate transverse partition walls 34 of the valve plate foundation 3.

[0037] like Figure 4As shown, the connecting box girder 5 is surrounded by a top flange 51, a bottom flange 52, an upstream web 53 and a downstream web 54. A plurality of connecting box girder cross diaphragms 55 parallel to the top flange 51 are arranged inside the connecting box girder 5. The arrangement height and thickness of the top flange 51 and the bottom flange 52 of the connecting box girder 5 correspond to the arrangement height and thickness of the horizontal plate arranged inside the tower column 11.

[0038] In addition, the thickness and position of the upstream web 53 of the connecting box girder 5 located at the most upstream correspond to the thickness and position of the tower column cross wall 15 located upstream of the tower column 11, the thickness and position of the downstream web 54 of the connecting box girder 5 located at the most upstream correspond to the thickness and position of the first tower column cross partition wall 16 located downstream and downward of the tower column 11, the thickness and position of the upstream web 53 of the connecting box girder 5 located at the most downstream correspond to the thickness and position of the first tower column cross partition wall 16 located upstream and upward of the tower column 11, and the thickness and position of the downstream web 54 of the connecting box girder 5 located at the most downstream correspond to the thickness and position of the tower column cross wall 15 located downstream of the tower column 11.

[0039] like Figure 5 As shown, the topmost connecting box girder 5 located upstream further includes an upstream wall type continuous corbel 56 located above the outer side of the upstream web 53 and a downstream wall type continuous corbel 57 located above the outer side of the downstream web 54 .

[0040] like Figure 6 As shown, the number of top beams 6 in the top beam group is equal to the sum of the number of tower column cross walls 15 and tower column cross partitions 16 in the tower column group 1, the arrangement position and width of the top beams 6 correspond to the arrangement position and thickness of the tower column cross walls 15 and tower column cross partitions 16, the top beams 6 are variable cross-section beams, and the end cross-section height of the top beams 6 is 50% to 70% greater than the mid-span cross-section height.

[0041] In this embodiment, a raft foundation 3 is used to connect the bottom of the ship lift tower 11 as a whole, so that the upper load is relatively evenly transferred to the foundation. For extremely soft rock foundations, multiple rows of sparse piles 4 are arranged below the raft, and the sparse piles 4 are rigidly connected to the raft as an integral structure to form a sparse pile raft foundation, thereby improving the bearing capacity and deformation modulus of the foundation; multi-layer connecting box girders 5 are symmetrically arranged on the towers 11 upstream and downstream of the ship lift, and the connecting box girders 5 are connected to the towers 11 by fixed ends to form a layered strong constraint effect on the towers 11 on both sides, thereby maximizing the lateral stiffness of the towers 11, and then connected through the top beam 6 structure, so that the entire tower structure forms a giant frame structure system; on the basis of ensuring that the thickness of the longitudinal wall of the tower structure and maintaining the width of the cabin room remain unchanged, the transverse flow dimensions of the hollow parts of the towers 11 on both sides of the cabin room are symmetrically expanded, thereby increasing the lateral stiffness of the ship lift structure, facilitating the arrangement of the machine room on the top of the tower 11, and reducing the cantilever length of the machine room floor in the transverse flow direction.

[0042] Among them, the centroid of the sparse pile 4 coincides with the center of gravity of the load transferred to the foundation by the tower column 11, so as to increase the resistance of the ship lift structure to the overturning load and minimize the settlement difference of each part of the raft foundation 3; the arrangement of the sparse pile 4 corresponds to the distribution form of the external load acting on the raft foundation 3, so as to maximize the effect of the sparse pile 4; in this embodiment, there are 4 rows of sparse piles 4, the pile diameter is about 2m, and the pile length is determined according to factors such as the structure height and geological conditions, generally about 1 / 7 of the height of the tower column 11, and the length of the two outermost rows of sparse piles 4 in the transverse direction is about 25% longer than that of other sparse piles 4; the thickness of the bottom plate 31 is taken as 1 / 25 of the height of the tower column 11, the height of the beam body of a single connecting box beam 5, the clear distance between the upper and lower box beams and the layered height of the tower columns 11 on both sides are adapted, and the width of the box beam is adapted to the spacing between the tower column cross walls 15 of the tower columns 11 on both sides , so as to increase the strong constraint effect of the connecting box beam 5 on the tower column 11; in this embodiment, the number of layers of the connecting box beam 5 is determined by calculation and analysis, generally 2-5 layers, the upstream connecting box beam 5 is used to connect the two tower column 11 cylinders on the upstream sides of the cabin room, and the downstream connecting box beam 5 is used to connect the two tower column 11 cylinders on the downstream sides of the cabin room, and the upstream and downstream connecting box beams 5 are arranged symmetrically; and the connecting box beam 5 is designed as a composite component according to the order of compartment casting, and a temporary post-casting strip is reserved in the mid-span; in addition, in this embodiment, the increase in the lateral size of the tower column 11 also needs to be determined by calculation, so as to maximize the lateral stiffness of the ship lift structure without significantly increasing the amount of engineering; in this embodiment, the foundation settlement, deformation of each part and stress analysis should be based on the overall three-dimensional calculation results, among which the soft rock foundation should be simulated by the three-dimensional viscoelastic-plastic finite element method.

[0043] The present invention provides a ship lift tower structure with a sparse pile raft foundation and a layered strongly constrained box beam. The sparse pile raft foundation can significantly improve the overall rigidity of the foundation, and effectively reduce and control the uneven settlement of the ship lift foundation and its later rheology; a layered strongly constrained full-cylinder tower is formed by providing a multi-layer rigid connecting box beam 5, while increasing the transverse flow dimension of the tower structure, significantly increasing the transverse rigidity of the tower, effectively reducing the top displacement of the ship lift tower structure, meeting the requirements for coordinated deformation of the ship lift tower and the navigable aqueduct in the transverse flow direction, reducing the secondary stress of the navigable aqueduct, and ensuring water-stopping safety; after the transverse rigidity of the ship lift tower structure is increased, the stress of key parts such as the plate beam structure of the machine room at the top of the tower is effectively reduced, ensuring the safety of the tower structure; in addition, in order to provide a In order to install the box girder, the downstream tower column must be extended beyond the boat cabin in the downstream direction. The extended downstream tower column can be arranged symmetrically with the upstream tower column, and the downstream dimension of the machine room on the top of the tower column can be increased, and the cantilever of the original machine room bottom plate to the downstream can be cancelled, which is beneficial to the arrangement of the lower lock head of the vertical ship lift. The symmetrically arranged tower column structure and its strongly constrained box girder can effectively avoid the torsional deformation of the tower column structure under the action of lateral load, and ensure the safe operation of various mechanical equipment on the top of the tower column. The present invention effectively controls the uneven settlement of the ship lift foundation and its subsequent rheology, reduces the lateral deformation of the structure, avoids the torsional deformation of the tower column, and reduces the stress of key parts of the ship lift structure, thus solving the technical difficulties faced in building an ultra-high head vertical ship lift on an extremely soft rock foundation, and has a high value of promotion and application.

Claims

1. A ship lift tower structure with a sparse pile raft foundation and a layered strongly constrained box beam, comprising a tower body, characterized in that: The tower column body comprises two tower column groups (1) which are symmetrical on both sides, the space between the two tower column groups (1) forms a boat cabin (2), a raft foundation (3) is arranged directly below the tower column body, a sparse pile group comprising a plurality of sparse piles (4) is arranged directly below the raft foundation (3), the sparse piles (4) are inserted into the foundation of the ship lift, a plurality of layers of connecting box beam groups are arranged between the middle and upper parts of the two tower column groups (1), each layer of the connecting box beam group comprises two connecting box beams (5) respectively located at the most upstream and the most downstream, the two ends of the connecting box beams (5) are respectively fixedly connected to the two tower column groups (1), a top beam group comprising a plurality of top beams (6) is arranged between the tops of the two tower column groups (1), the two ends of the top beam (6) are respectively fixedly connected to the two tower column groups (1); The raft foundation (3) comprises a bottom plate (31) and four bottom plate longitudinal walls (32) and two bottom plate transverse walls (33) arranged on the bottom plate (31), wherein two of the bottom plate longitudinal walls (32) and two of the bottom plate transverse walls (33) are located on four sides of the bottom plate (31), the two bottom plate longitudinal walls (32) and two of the bottom plate transverse walls (33) located on the left side enclose a tower column foundation of one tower column group (1), the two bottom plate longitudinal walls (32) and two of the bottom plate transverse walls (33) located on the right side enclose a tower column foundation of another tower column group (1), and the two bottom plate longitudinal walls (32) and two of the bottom plate transverse walls (33) located on the inner side enclose a tower column foundation of another tower column group (1). The two bottom plate longitudinal walls (32) and the two bottom plate transverse walls (33) are combined to form an enclosed cavity (7) communicating with the cabin room (2); the bottom plate transverse wall (33) located downstream is provided with a navigation groove (8) at the position of the enclosed cavity (7); each tower column foundation is provided with a plurality of bottom plate transverse partition walls (34) parallel to the bottom plate transverse wall (33); the two bottom plate longitudinal walls (32) located on the outside are of the same thickness and are symmetrical with respect to the enclosed cavity (7); the two bottom plate longitudinal walls (32) located on the inside are of the same thickness and are symmetrical with respect to the enclosed cavity (7); The sparse pile group comprises four rows of sparse piles arranged in parallel, the four rows of sparse piles being respectively located directly below the four bottom plate longitudinal walls (32), the sparse piles (4) in each row of the sparse piles being symmetrically arranged in the upstream and downstream directions, and the lengths of the sparse piles (4) in the two rows of the sparse piles being located on the outer sides are greater than the lengths of the sparse piles (4) in the two rows of the sparse piles being located on the inner sides.

2. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 1 is characterized in that: Each of the tower column groups (1) comprises two tower columns (11) symmetrically arranged in the upstream and downstream directions. The two tower columns (11) in each of the tower column groups (1) are connected by an external shear wall (12) and an internal shear wall (13) arranged at the top. The tower columns (11) are surrounded by two tower column longitudinal walls (14) and a tower column transverse wall (15). A plurality of tower column transverse partition walls (16) parallel to the tower column transverse walls (15) are arranged inside the tower column (11). The tower column longitudinal walls (14), tower column transverse walls (15) and tower column transverse partition walls (16) are arranged correspondingly to the bottom plate longitudinal walls (32), bottom plate transverse walls (33) and bottom plate transverse partition walls (34) of the raft foundation (3).

3. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 2 is characterized in that: The connecting box girder (5) is formed by a top flange (51), a bottom flange (52), an upstream web (53) and a downstream web (54), and a plurality of connecting box girder transverse diaphragms (55) parallel to the top flange (51) are arranged inside the connecting box girder (5).

4. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 3 is characterized in that: The thickness and position of the upstream web (53) of the connecting box girder (5) located at the most upstream correspond to the thickness and position of the tower column cross wall (15) located upstream of the tower column (11); the thickness and position of the downstream web (54) of the connecting box girder (5) located at the most upstream correspond to the thickness and position of the first tower column cross partition wall (16) located downstream of the tower column (11); the thickness and position of the upstream web (53) of the connecting box girder (5) located at the most downstream correspond to the thickness and position of the first tower column cross partition wall (16) located upstream of the tower column (11); and the thickness and position of the downstream web (54) of the connecting box girder (5) located at the most downstream correspond to the thickness and position of the tower column cross wall (15) located downstream of the tower column (11).

5. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 4 is characterized in that: The number of top beams (6) in the top beam group is equal to the sum of the number of tower column cross walls (15) and tower column cross partition walls (16) in the tower column group (1), and the arrangement position and width of the top beams (6) correspond to the arrangement position and thickness of the tower column cross walls (15) and tower column cross partition walls (16).

6. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 5 is characterized in that: The arrangement height and thickness of the top flange (51) and the bottom flange (52) of the connecting box beam (5) correspond to the arrangement height and thickness of the horizontal plate arranged inside the tower column (11).

7. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 6 is characterized in that: The connecting box girder (5) located at the topmost layer upstream also includes an upstream wall type continuous corbel (56) located above the outer side of the upstream web (53) and a downstream wall type continuous corbel (57) located above the outer side of the downstream web (54).

8. The ship lift tower structure with sparse pile raft foundation and layered strong restraint box beam according to claim 7 is characterized in that: The top beam (6) is a variable-section beam, the end section height of the top beam (6) is 50% to 70% greater than the mid-span section height, and the upper middle portion of the tower column (11) is provided with multiple layers of the outer shear wall (12) and the inner shear wall (13).

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