Tower crane supporting structure

Abstract

The invention provides a tower crane supporting structure which is installed in a core tube of a building, the core tube comprises a shear wall, the shear wall is provided with at least one pair of concrete coupling beams which are horizontally arranged at intervals, the tower crane supporting structure comprises two steel trusses, the two ends of each steel truss are arranged on the concrete coupling beams respectively, and the steel trusses are arranged on the concrete coupling beams respectively. The two steel trusses are arranged in parallel; the secondary beam is arranged between the two steel trusses, and the two steel trusses are connected through the secondary beam. According to the tower crane supporting structure, an original reinforced concrete fixing mode is changed into a steel truss mode, the steel truss is light in dead weight and large in span, the reliability is guaranteed, meanwhile, the mounting and dismounting processes are simplified, the concrete structure does not need to be damaged, the mounting and dismounting steps are greatly simplified, materials can be recycled, energy is saved, and the environment is protected; and the safety is relatively high.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 2021114444402, entitled "Tower Crane Support Structure and Implementation Method", filed on November 30, 2021, the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of building construction technology, and more specifically, to a tower crane support structure. Background Technology

[0003] In recent years, with rapid urban development, the number of commercial complexes and super high-rise buildings has increased significantly, putting developers under considerable financial pressure. The construction of commercial complexes is often fast-paced, and to ensure capital recovery, developers often open the complexes immediately after completion. This necessitates the dismantling of externally mounted tower cranes due to the early opening of adjacent shopping centers. However, the main structure of the adjacent super high-rise tower is not yet complete. Tower cranes are indispensable vertical transportation machinery in construction, and to ensure the smooth construction of the super high-rise building later, the original tower cranes must be converted and reinstalled. However, existing internal climbing tower cranes typically use reinforced concrete foundations, making dismantling extremely difficult and generating substantial waste. Therefore, simplifying the assembly and dismantling process of internal climbing tower cranes is an urgent problem to be solved in this field. Summary of the Invention

[0004] The main objective of this invention is to provide a tower crane support structure to solve the problem of complex assembly and disassembly processes in existing internal climbing tower cranes.

[0005] To achieve the above objectives, according to one aspect of the present invention, a tower crane support structure is provided, installed within the core tube of a building, the core tube including shear walls having at least a pair of horizontally spaced concrete connecting beams, the tower crane support structure comprising: The steel truss is set on concrete connecting beams at both ends; there are two steel trusses, which are set in parallel; the original method of fixing with reinforced concrete is changed to fixing with steel trusses; the steel truss includes an upper flange steel beam, a lower flange steel beam, straight web members, and diagonal web members. The upper flange steel beam is set above the lower flange steel beam, the straight web members connect the upper flange steel beam and the lower flange steel beam, and the diagonal web members connect the upper flange steel beam and the lower flange steel beam; the first end of the diagonal web member is connected to the connection position between the straight web member and the upper flange steel beam, and the second end of the diagonal web member is connected to the connection position between the adjacent straight web member and the lower flange steel beam; Secondary beams are placed between two steel trusses, which are connected by secondary beams; the connection of secondary beams between two steel trusses does not require damage to the concrete structure. During installation, the pre-processed profiles are simply hoisted to the floor, and the steel trusses and secondary beams are installed through assembly and welding. During disassembly, the profiles are cut, dismantled, and hoisted off-site according to hoisting calculations. Moreover, the pre-processed materials can be recycled.

[0006] In one or more embodiments, a pair of concrete connecting beams are at the same height in the vertical direction and are spaced apart and parallel in the horizontal direction; if necessary, shear steel plates can be added to the concrete connecting beams in the core tube to increase the reinforcement of the shear wall.

[0007] In one or more embodiments, the concrete connecting beam includes a first connecting beam and a second connecting beam arranged opposite to and parallel to each other, with a first end of the upper flange steel beam disposed on the first connecting beam and a second end of the upper flange steel beam disposed on the second connecting beam; the concrete connecting beam also includes a third connecting beam and a fourth connecting beam arranged opposite to and parallel to each other, with the third connecting beam located below the first connecting beam and the fourth connecting beam located below the second connecting beam, with a first end of the lower flange steel beam disposed on the third connecting beam and a second end of the lower flange steel beam disposed on the fourth connecting beam.

[0008] In one or more embodiments, the tower crane support structure further includes: The first embedded parts are respectively set on all concrete connecting beams; The first connecting plate is set on the first embedded part on the first connecting beam, and the first end of the upper flange steel beam is connected to the first connecting plate. The second connecting plate is set on the first embedded part on the third connecting beam, and the first end of the lower flange steel beam is connected to the second connecting plate.

[0009] In one or more embodiments, the tower crane support structure further includes: The first limiting frame is set on the first embedded part of the second connecting beam. The second end of the upper flange steel beam is limited and matched with the first limiting frame. The first limiting frame is used to restrict the vertical movement of the upper flange steel beam. The second limiting frame is set on the first embedded part of the fourth connecting beam. The second end of the lower flange steel beam is limited and matched with the second limiting frame. The second limiting frame is used to restrict the vertical movement of the lower flange steel beam.

[0010] In one or more embodiments, the upper flange steel beam can move relative to the second connecting beam along its own length.

[0011] In one or more embodiments, a steel plate is welded to the first embedded part on the second connecting beam, and a polytetrafluoroethylene plate is placed on the steel plate. The second end of the upper flange steel beam is slidably disposed on the polytetrafluoroethylene plate. There are two first limiting frames, which are L-shaped. The two first limiting frames are arranged opposite to each other and simultaneously welded to the first embedded part on the second connecting beam. The two first limiting frames and the first embedded part form a slot with an inverted T-shaped groove. The second end of the upper flange steel beam is movably disposed in the slot.

[0012] In one or more embodiments, a steel plate is welded onto the first embedded part on the fourth connecting beam, and a polytetrafluoroethylene plate is placed on the steel plate. The second end of the lower flange steel beam is slidably disposed on the polytetrafluoroethylene plate. The number and installation method of the second limiting frames are the same as those of the first limiting frames. The second end of the lower flange steel beam is movably disposed in the slot formed by the two second limiting frames and the corresponding first embedded part.

[0013] In one or more embodiments, the tower crane support structure further includes: Tie rods are attached to the steel truss, which in turn connects to the shear wall.

[0014] In one or more embodiments, the tower crane support structure further includes a second embedded part, which is set inside the shear wall, and the tie rod is connected to the second embedded part; both the first embedded part and the second embedded part use small-section I-beams as anchor rods.

[0015] According to another aspect of the present invention, a construction method for the above-mentioned tower crane support structure is provided, comprising the following steps: S10: casting the shear wall and concrete connecting beam of the core tube, and embedding pre-embedded parts in the shear wall and the concrete connecting beam before casting; S20: installing two steel trusses on the cast concrete connecting beam, and fixing the trusses to the pre-embedded parts; S30: fixing the two steel trusses by secondary beams; S40: connecting the steel trusses to the pre-embedded parts by connecting rods.

[0016] By applying the technical solution of this invention, the original method of fixing reinforced concrete is replaced with a steel truss method. The steel truss is lightweight and has a large span, which simplifies the installation and dismantling process while ensuring reliability. During installation, the processed profiles are simply hoisted to the floor and assembled and welded to complete the installation of the steel truss. During dismantling, the steel truss is cut, dismantled and hoisted off the site according to hoisting calculations, without damaging the concrete structure. This greatly simplifies the installation and dismantling steps. Moreover, the materials can be recycled, which is energy-saving and environmentally friendly, and the safety is high.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A schematic diagram of a tower crane support structure according to Embodiment 1 of the present invention is shown; and Figure 2 A schematic diagram of the steel truss of the tower crane support structure according to Embodiment 1 of the present invention is shown; Figure 3 An assembly diagram of the steel truss, first connecting beam, and third connecting beam of the tower crane support structure according to Embodiment 1 of the present invention is shown. Figure 4 An assembly diagram of the steel truss, second connecting beam, and fourth connecting beam of the tower crane support structure according to Embodiment 1 of the present invention is shown. Figure 5 A schematic diagram of the first embedded part of the tower crane support structure according to Embodiment 1 of the present invention is shown.

[0019] The above figures include the following reference numerals: 10. Shear wall; 20. Concrete connecting beam; 21. First connecting beam; 22. Second connecting beam; 23. Third connecting beam; 24. Fourth connecting beam; 30. Steel truss; 31. Upper flange steel beam; 32. Lower flange steel beam; 33. Straight web steel beam; 34. Diagonal web steel beam; 40. Secondary beam; 51. First embedded part; 52. Second embedded part; 61. First connecting plate; 62. Second connecting plate; 63. First limiting frame; 64. Second limiting frame; 70. Tie rod. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] like Figure 1 The first embodiment of the present invention, as shown, provides a tower crane support structure installed within the core tube of a building. The core tube includes a shear wall 10, on which at least one pair of horizontally spaced concrete connecting beams 20 are provided. The tower crane support structure includes a steel truss 30 and secondary beams 40. Two steel trusses 30 are respectively mounted on the concrete connecting beams 20 at both ends, and are arranged in parallel. The secondary beams 40 are positioned between the two steel trusses 30, connecting them. This tower crane support structure replaces the original reinforced concrete fixing method with a steel truss 30. The steel truss 30 is lightweight and has a large span, simplifying installation and dismantling while ensuring reliability. During installation, only the pre-fabricated profiles need to be hoisted to the floor, and the steel truss 30 is assembled and welded. During dismantling, it is cut, dismantled, and transported off-site according to hoisting calculations, without damaging the concrete structure. This greatly simplifies the installation and dismantling steps. Furthermore, the materials are recyclable, energy-saving, environmentally friendly, and offer high safety.

[0025] It should be noted that, as Figure 1 As shown, Figure 1 The shear wall 10 on the left side has at least one concrete connecting beam 20. Figure 1 The shear wall 10 on the right side also has at least one concrete connecting beam 20. The two concrete connecting beams 20 are at the same height in the vertical direction, and are spaced apart and parallel in the horizontal direction. The steel truss 30 is set on the two concrete connecting beams 20.

[0026] like Figure 2As shown, the steel truss 30 includes an upper flange steel beam 31, a lower flange steel beam 32, a straight web member steel beam 33, and a diagonal web member steel beam 34. The upper flange steel beam 31 is positioned above the lower flange steel beam 32. The straight web member steel beam 33 connects the upper flange steel beam 31 and the lower flange steel beam 32, and the diagonal web member steel beam 34 connects the upper flange steel beam 31 and the lower flange steel beam 32. By setting the upper flange steel beam 31 and the lower flange steel beam 32 and connecting them through the straight web member steel beam 33 and the diagonal web member steel beam 34, the force-bearing system is simple, with strong bending resistance, large load-bearing capacity, and the ability to withstand the large vertical loads brought by the luffing jib tower crane, thereby improving safety and reliability. Preferably, the first end of the diagonal web member steel beam 34 is connected at the connection position between the straight web member steel beam 33 and the upper flange steel beam 31, and the second end of the diagonal web member steel beam 34 is connected at the connection position between the adjacent straight web member steel beam 33 and the lower flange steel beam 32, thereby improving the load performance.

[0027] In this embodiment, as Figure 3 and Figure 4 As shown, the concrete connecting beam 20 includes a first connecting beam 21, a second connecting beam 22, a third connecting beam 23, and a fourth connecting beam 24. The first connecting beam 21 and the second connecting beam 22 are arranged opposite each other. The first end of the upper flange steel beam 31 is located on the first connecting beam 21, and the second end of the upper flange steel beam 31 is located on the second connecting beam 22. The third connecting beam 23 is located below the first connecting beam 21, and the fourth connecting beam 24 is located below the second connecting beam 22. The first end of the lower flange steel beam 32 is located on the third connecting beam 23, and the second end of the lower flange steel beam 32 is located on the fourth connecting beam 24. To improve the load-bearing capacity of the steel truss 30, four concrete connecting beams 20 need to be poured during the pouring of the concrete connecting beams 20, namely the first connecting beam 21, the second connecting beam 22, the third connecting beam 23, and the fourth connecting beam 24. The first connecting beam 21 and the second connecting beam 22 are arranged in parallel. The two ends of the upper flange steel beam 31 are connected to the first connecting beam 21 and the second connecting beam 22 respectively. The third connecting beam 23 is located below the first connecting beam 21, and the fourth connecting beam 24 is located below the first connecting beam 21. The two ends of the lower flange steel beam 32 are connected to the third connecting beam 23 and the fourth connecting beam 24 respectively. Through the steel truss 30 and the concrete connecting beams 20, the load can be evenly distributed on the four concrete connecting beams 20, thereby improving the load-bearing capacity.

[0028] Furthermore, the tower crane support structure also includes a first embedded part 51, a first connecting plate 61, and a second connecting plate 62. The first embedded parts 51 are respectively set on all concrete connecting beams 20; the first connecting plate 61 is set on the first embedded part 51 on the first connecting beam 21, and the first end of the upper flange steel beam 31 is connected to the first connecting plate 61; the second connecting plate 62 is set on the first embedded part 51 on the third connecting beam 23, and the first end of the lower flange steel beam 32 is connected to the second connecting plate 62. The first connecting plate 61 is welded to the first embedded part 51 of the first connecting beam 21, and the first end of the upper flange steel beam 31 is welded to the first connecting plate 61, thereby achieving the connection and fixation of the upper flange steel beam 31 and the first connecting beam 21. The second connecting plate 62 is welded to the first embedded part 51 of the third connecting beam 23, and the first end of the lower flange steel beam 32 is welded to the second connecting plate 62, thereby achieving the connection and fixation of the upper flange steel beam 31 and the first connecting beam 21. Preferably, both the first connecting plate 61 and the second connecting plate 62 are steel plates. Furthermore, the tower crane support structure also includes a first limiting frame 63 and a second limiting frame 64. The first limiting frame 63 is set on the first embedded part 51 of the second connecting beam 22, and the second end of the upper flange steel beam 31 is limited and matched with the first limiting frame 63. The first limiting frame 63 is used to restrict the vertical movement of the upper flange steel beam 31. The second limiting frame 64 is set on the first embedded part 51 of the fourth connecting beam 24, and the second end of the lower flange steel beam 32 is limited and matched with the second limiting frame 64. The second limiting frame 64 is used to restrict the vertical movement of the lower flange steel beam 32. A steel plate is welded to the first embedded part 51 on the second connecting beam 22, and a polytetrafluoroethylene (PTFE) plate is placed on the steel plate. The second end of the upper flange steel beam 31 is slidably set on the PTFE plate. There are two first limiting frames 63, which are L-shaped. The two first limiting frames 63 are arranged opposite each other and simultaneously welded to the first embedded part 51 on the second connecting beam 22. The two first limiting frames 63 and the first embedded part 51 form an inverted T-shaped groove. The second end of the upper flange steel beam 31 is movably set in the groove. By utilizing the characteristics of the PTFE plate, the friction coefficient between the steel plates is reduced. The first limiting frame 63 is used to restrict the movement of the second end of the upper flange steel beam 31 in the vertical direction. Since the upper flange steel beam 31 can move relative to the second connecting beam 22 in its own length direction, the lateral force transmitted from the steel truss 30 to the concrete connecting beam 20 can be greatly eliminated.

[0029] Similarly, a steel plate is welded onto the first embedded part 51 on the fourth connecting beam 24, and a polytetrafluoroethylene plate is placed on the steel plate. The second end of the lower flange steel beam 32 is slidably set on the polytetrafluoroethylene plate. The number and installation method of the second limiting frame 64 are the same as those of the first limiting frame 63. The second end of the lower flange steel beam 32 is movably set in the slot formed by the two second limiting frames 64 and the corresponding first embedded part 51, which can greatly eliminate the lateral force transmitted from the steel truss 30 to the concrete connecting beam 20.

[0030] Furthermore, the tower crane support structure also includes tie rods 70, which are connected to the steel truss 30. The steel truss 30 is connected to the shear wall 10 via the tie rods 70. It should be noted that the tie rods 70 are welded to the outer side of the steel truss 30, connecting to the shear wall 10 to balance the horizontal force of the steel truss 30. The steel material is all Q355B, and a fully welded connection is used, employing carbon dioxide gas shielded welding. In addition, to further improve reliability, the tie rods 70 can also be connected to the concrete connecting beam 20. It should be noted that a second embedded part 52 is provided within the shear wall 10, and the tie rods 70 are connected to the second embedded part 52.

[0031] It should also be noted that, such as Figure 5 As shown, both the first embedded part 51 and the second embedded part 52 use small-section I-beams as anchor rods. While meeting the stress requirements of the truss, they also take into account the requirements for the reinforcement of the concrete beam. The whole embedded part is convenient for construction.

[0032] According to another aspect of the present invention, a construction method for the above-mentioned tower crane support structure is also disclosed, comprising the following steps: S10: pouring the shear wall 10 and concrete connecting beam 20 of the core tube, and embedding the pre-embedded parts in the shear wall 10 and concrete connecting beam 20 before pouring; S20: installing two steel trusses 30 on the poured concrete connecting beam 20, and fixing the trusses to the pre-embedded parts; S30: fixing the two steel trusses 30 through the secondary beam 40; S40: connecting the steel trusses 30 to the pre-embedded parts through the connecting rod.

[0033] It should be noted that, depending on the specific site conditions, shear plates need to be added to the concrete beams within the core tube, and the reinforcement of the shear wall 10 within the core tube needs to be increased to improve its strength and ensure safety and reliability. Before installing the steel truss 30, the main structure concrete must be reinforced to ensure 100% strength. During tower crane operation, the design value of the reaction force acting on the main structure must not exceed the limit value of the tower crane foundation support reaction force. After construction, the welded parts of the tower crane foundation must undergo flaw detection; only after passing the inspection can the tower crane be used. During tower crane operation, stress and strain monitoring of the concrete connecting beam 20 and steel truss 30 within the core tube should be strengthened to ensure safe operation.

[0034] As can be seen from the above description, the embodiments of the present invention are easy to install and dismantle, shorten the foundation construction period, the materials can be recycled, and the safety is high, which can improve the utilization rate of tower cranes.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tower crane support structure, installed within the core tube of a building, the core tube comprising shear walls, the shear walls having at least one pair of horizontally spaced concrete connecting beams, characterized in that... The tower crane support structure includes: The steel truss is set on concrete connecting beams at both ends; there are two steel trusses, which are set in parallel; the original method of fixing with reinforced concrete is changed to fixing with steel trusses; the steel truss includes an upper flange steel beam, a lower flange steel beam, straight web members, and diagonal web members. The upper flange steel beam is set above the lower flange steel beam, the straight web members connect the upper flange steel beam and the lower flange steel beam, and the diagonal web members connect the upper flange steel beam and the lower flange steel beam; the first end of the diagonal web member is connected to the connection position between the straight web member and the upper flange steel beam, and the second end of the diagonal web member is connected to the connection position between the adjacent straight web member and the lower flange steel beam; Secondary beams are placed between two steel trusses, which are connected by secondary beams; the connection of secondary beams between two steel trusses does not require damage to the concrete structure. During installation, the pre-processed profiles are simply hoisted to the floor, and the steel trusses and secondary beams are installed through assembly and welding. During disassembly, the profiles are cut, dismantled, and hoisted off-site according to hoisting calculations. Moreover, the pre-processed materials can be recycled.

2. The tower crane support structure as described in claim 1, characterized in that, A pair of concrete coupling beams are at the same height in the vertical direction and are spaced apart and parallel in the horizontal direction. If necessary, shear steel plates can be added to the concrete coupling beams in the core tube to increase the reinforcement of the shear wall.

3. The tower crane support structure as described in claim 1, characterized in that, The concrete connecting beam includes a first connecting beam and a second connecting beam arranged opposite to and parallel to each other. The first end of the upper flange steel beam is located on the first connecting beam, and the second end of the upper flange steel beam is located on the second connecting beam. The concrete connecting beam also includes a third connecting beam and a fourth connecting beam arranged opposite to and parallel to each other. The third connecting beam is located below the first connecting beam, and the fourth connecting beam is located below the second connecting beam. The first end of the lower flange steel beam is located on the third connecting beam, and the second end of the lower flange steel beam is located on the fourth connecting beam.

4. The tower crane support structure as described in claim 3, characterized in that, Also includes: The first embedded parts are respectively set on all concrete connecting beams; The first connecting plate is set on the first embedded part on the first connecting beam, and the first end of the upper flange steel beam is connected to the first connecting plate. The second connecting plate is set on the first embedded part on the third connecting beam, and the first end of the lower flange steel beam is connected to the second connecting plate.

5. The tower crane support structure according to claim 4, characterized in that, Also includes: The first limiting frame is set on the first embedded part of the second connecting beam. The second end of the upper flange steel beam is limited and matched with the first limiting frame. The first limiting frame is used to restrict the vertical movement of the upper flange steel beam. The second limiting frame is set on the first embedded part of the fourth connecting beam. The second end of the lower flange steel beam is limited and matched with the second limiting frame. The second limiting frame is used to restrict the vertical movement of the lower flange steel beam.

6. The tower crane support structure according to claim 5, characterized in that, The upper flange steel beam can move relative to the second connecting beam along its own length.

7. The tower crane support structure according to claim 6, characterized in that, A steel plate is welded onto the first embedded part on the second connecting beam, and a polytetrafluoroethylene plate is placed on the steel plate. The second end of the upper flange steel beam is slidably set on the polytetrafluoroethylene plate. There are two first limiting frames, which are L-shaped. The two first limiting frames are arranged opposite each other and simultaneously welded to the first embedded part on the second connecting beam. The two first limiting frames and the first embedded part form an inverted T-shaped groove. The second end of the upper flange steel beam is movably set in the groove.

8. The tower crane support structure according to claim 7, characterized in that, A steel plate is welded onto the first embedded part on the fourth connecting beam, and a polytetrafluoroethylene plate is placed on the steel plate. The second end of the lower flange steel beam is slidably set on the polytetrafluoroethylene plate. The number and installation method of the second limiting frame are the same as those of the first limiting frame. The second end of the lower flange steel beam is movably set in the slot formed by the two second limiting frames and the corresponding first embedded part.

9. The tower crane support structure according to claim 4, characterized in that, The tower crane support structure also includes: Tie rods are attached to the steel truss, which in turn connects to the shear wall.

10. The tower crane support structure according to claim 9, characterized in that, The tower crane support structure also includes a second embedded part, which is set inside the shear wall, and the tie rod is connected to the second embedded part; both the first and second embedded parts use small-section I-beams as anchor rods.

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