Concrete laminated tower crane foundation structure applicable to existing structure

Abstract

The utility model relates to the technical field of building construction, in particular to a concrete laminated tower crane foundation structure applicable to an existing structure, which comprises a structural plate on the existing structure, structural beams arranged in a crisscross manner and structural columns arranged below the structural beams, the upper end of the structural column is supported and fixed at the cross point of the two structural beams, and the structural plate is laid on the structural beams; a concrete foundation bearing platform is arranged on the structural plate and located above the cross structural beam, a foundation bearing platform reinforcing mesh is arranged in the concrete foundation bearing platform, a plurality of embedded supporting legs are arranged in the foundation bearing platform reinforcing mesh, and the foundation bearing platform reinforcing mesh is used for pouring concrete. The construction method has the effects that the efficiency of constructing the tower crane foundation on the existing structure is improved, and the load strength of the existing structure is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a concrete composite tower crane foundation structure applicable to existing structures. Background Art

[0002] Tower crane is the most commonly used lifting equipment on construction sites, also known as "tower crane". It is usually connected in sections (referred to as "standard sections"), and can be used to lift construction materials such as steel bars, wooden slats, concrete, steel pipes, etc. It is an indispensable equipment on the construction site. At present, tower crane has been widely used in the field of construction. It is an indispensable basic equipment for high-rise building construction. It is suitable for complex construction sites, can be raised by adding sections, is simple to operate, and is flexible to respond. It can easily transport building materials within the radius of the tower crane, reducing the labor intensity of construction workers and significantly improving construction efficiency.

[0003] Before a tower crane can be used, its foundation must be constructed, and then the standard crane section must be installed on it. Existing tower crane foundations are usually made of poured concrete, which is generally large in volume. Construction also requires processes such as tying steel bars, supporting formwork, and pouring concrete. Traditional tower crane foundations are usually constructed beneath the raft slab or located on the edge of a foundation pit, relying on their own weight to ensure stability. A standard tower crane foundation is configured according to the crane model, followed by the embedded section. Finally, the standard section is installed on top of the embedded section, and the crane height is adjusted according to the building height.

[0004] With the increase in renovation projects, tower cranes are increasingly used in existing construction and renovation projects with underground structures. Currently, the structural plates of existing structures have poor bearing capacity, and the load of the tower crane is concentrated. Therefore, the tower crane foundation cannot be directly set on the structural plate of the existing structure. It is often necessary to pass through the structural plate of the existing structure and fix the tower crane foundation to the bottom foundation of the structure. The construction is cumbersome and inefficient. Utility Model Content

[0005] In order to improve the efficiency of constructing a tower crane foundation on an existing structure and ensure the load strength of the existing structure, the present application provides a concrete composite tower crane foundation structure suitable for the existing structure.

[0006] This application provides a concrete composite tower crane foundation structure applicable to existing structures, which adopts the following technical solutions:

[0007] A concrete composite tower crane foundation structure suitable for an existing structure comprises a structural plate on the existing structure, structural beams arranged in a cross pattern, and structural columns arranged below the structural beams, wherein the upper ends of the structural columns are supported and fixed at the cross-intersection of the two structural beams, and the structural plates are laid on the structural beams; a concrete foundation pedestal is arranged on the structural plate and above the cross-intersection structural beams, a foundation pedestal steel mesh is arranged inside the concrete foundation pedestal, a plurality of embedded legs are arranged inside the foundation pedestal steel mesh, and the foundation pedestal steel mesh is used for pouring concrete.

[0008] By adopting the above technical solution, when constructing a tower crane foundation on an existing building structure, the concrete foundation pedestal of the tower crane can be constructed at the structural columns and the structural beams at the cross intersection. The weight of the concrete foundation pedestal is supported by the structural columns and structural beams, and is connected to the concrete foundation pedestal as a whole, thereby ensuring the strength of the tower crane foundation. During the construction process, the embedded legs can be connected to the foundation pedestal steel mesh, which can make the connection between the embedded legs and the concrete foundation pedestal more firmly. Therefore, when constructing a concrete foundation pedestal on an existing structure, the use of this structure can improve the efficiency of construction and avoid the need to drill through the existing structural plate.

[0009] Optionally, the upper ends of the plurality of embedded legs are connected to a rectangular fixing frame.

[0010] By adopting the above technical solution, the fixed frame can connect multiple embedded legs into a whole, thereby ensuring that multiple embedded legs remain in a vertical state, avoiding the embedded legs from tilting, and at the same time, the upper ends of multiple embedded legs can be set on the same horizontal plane, preventing them from being unable to be connected and fixed with the standard section of the tower crane in the later stage.

[0011] Optionally, a mounting groove is provided on the structural plate, and the foundation cap steel mesh is arranged in the mounting groove.

[0012] By adopting the above technical solution, the foundation pedestal steel mesh can be tied and installed in the installation groove, and after the concrete is poured, the formed concrete foundation pedestal can be stably set on the structural plate and increase the connection strength with the existing structural plate.

[0013] Optionally, a plurality of reinforcing steel bars are connected and fixed to the foundation pedestal steel bar mesh, the plurality of reinforcing steel bars are evenly arranged along the length direction of the structural beam, and the reinforcing steel bars are passed through the structural beam and fixed to the existing structural steel bars in the structural beam.

[0014] By adopting the above technical solution, when tying the foundation cap steel mesh, the reinforcing steel bars are first set in the structural plate in the installation groove, and the reinforcing steel bars are connected and fixed to the steel bars in the structural beam, and then the reinforcing steel bars are connected and fixed to the foundation cap steel mesh, so that the foundation cap steel mesh is more firmly connected to the structural plate and the structural beam, thereby improving the stability of the concrete foundation cap.

[0015] Optionally, a plurality of reinforcing steel bars are evenly arranged on the structural beams in a cross structure.

[0016] By adopting the above technical solution, multiple reinforcing steel bars evenly arranged on the structural beams can firmly connect the foundation pedestal steel mesh to the two cross-arranged structural beams, so that the cast concrete foundation pedestal and the existing connection form a whole.

[0017] Optionally, a plurality of supporting steel bars are provided inside the foundation cap steel mesh, the supporting steel bars are fixed to the lower ends of the embedded legs, and the supporting steel bars are fixed to the foundation cap steel mesh and supported on the structural plate.

[0018] By adopting the above technical solution, the set supporting steel bars can support the embedded legs inside the foundation pedestal steel mesh, and fix the embedded legs to the foundation pedestal steel mesh, and then allow the upper ends of the embedded legs to extend from the inside of the foundation pedestal steel mesh to prevent them from being poured into the concrete.

[0019] Optionally, a waterproof layer is provided at the location where the concrete foundation pedestal is connected to the structural plate.

[0020] By adopting the above technical solution, it is possible to prevent water from seeping into the installation groove of the structural plate from the gap between the concrete foundation cap and the structural plate, and to prevent water from seeping into the interior of the existing building.

[0021] Optionally, the foundation pedestal steel mesh is further provided with an anti-tilt component acting on the embedded legs, the anti-tilt component includes a support rod vertically arranged on the foundation pedestal steel mesh and located between multiple embedded legs, the upper end of the support rod is provided with a cross-shaped anti-tilt seat, the anti-tilt seat is horizontally arranged below the fixed frame and pressed against the fixed frame.

[0022] By adopting the above technical solution, in the process of tying the foundation pedestal steel mesh, a vertical support rod is set inside it. When the foundation pedestal steel mesh is tied, an anti-tilt seat is set at its upper end so that the anti-tilt seat can abut against the fixed frame, thereby allowing the fixed frame to always maintain a horizontal state, preventing the embedded legs from being offset due to the influence of concrete flow and vibration of concrete during concrete pouring. Therefore, the anti-tilt seat can always act on the fixed frame.

[0023] Optionally, a hinged ball is fixed at the cross point of the anti-tilt seat, and the hinged ball is rotatably fitted on the upper end of the support rod. A plurality of fixing bolts are threadedly connected at a position near the upper end of the support rod, and the fixing bolts can be tightened onto the hinged ball.

[0024] By adopting the above technical solution, during the concrete pouring process, the support rod is affected by the flowing concrete and is prone to deviation and tilting. Through the setting of the articulated ball, the anti-tilt seat can be freely adjusted so that the anti-tilt seat can be in a horizontal state.

[0025] Optionally, a plurality of levels are provided in the cross direction of the anti-tilt seat for ensuring that the anti-tilt seat is in a horizontal state.

[0026] By adopting the above technical solution, when adjusting the anti-tilt seat to make it in a horizontal state, the staff can observe the spirit level to make adjustments, so that the anti-tilt seat can be adjusted to the level more quickly.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The concrete foundation cap provided in this application is installed on the existing structural columns and cross-shaped structural beams, distributing the weight of the tower crane foundation to the structural beams and columns, thereby making the concrete foundation cap more stable and preventing it from crushing the existing structural slabs;

[0029] 2. The installed foundation cap steel mesh can be connected and fixed with the steel bars in the existing structural beams through the reinforcement bars, thereby increasing the connection strength between the concrete foundation cap and the structural slab. After the concrete pouring is completed, the concrete foundation cap and the structural slab form a whole;

[0030] 3. The support rods and anti-tilt seats arranged inside the foundation pedestal steel mesh can form an anti-tilt structure, so that the four ends of the cross-shaped anti-tilt seat can extend under the fixed frame, and the ends of the anti-tilt seat can be pressed against the fixed frame, thereby supporting the fixed frame and preventing it from shifting or tilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0032] Figure 2 This is a schematic diagram of an installation slot according to an embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of reinforcing steel bars and supporting steel bars according to an embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of an anti-tilt assembly according to an embodiment of the present application.

[0035] Figure 5 It is a schematic diagram of the anti-tilt assembly from other perspectives according to an embodiment of the present application.

[0036] Explanation of the accompanying symbols: 1. Structural plate; 11. Structural column; 12. Structural beam; 13. Installation groove; 2. Concrete foundation pedestal; 21. Foundation pedestal steel mesh; 22. Reinforcing steel bars; 23. Supporting steel bars; 3. Embedded legs; 31. Fixed frame; 4. Waterproof layer; 5. Anti-tilt assembly; 51. Support rod; 511. Fixed part; 512. Movable part; 513. Fastening bolt; 52. Anti-tilt seat; 53. Articulated ball; 54. Fixing bolt; 55. Level. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The embodiment of the present application discloses a concrete composite tower crane foundation structure applicable to existing structures.

[0039] Reference Figure 1 A concrete composite tower crane foundation structure suitable for existing structures includes a structural plate 1 on the existing structure, a plurality of structural columns 11 are arranged under the structural plate 1, and a plurality of structural beams 12 are fixed on the lower surface of the structural plate 1. The plurality of structural beams 12 are arranged in a cross shape, and the upper ends of the structural columns 11 are fixed at the intersection of the plurality of structural beams 12. The structural plate 1 is laid on the structural beams 12, and the interiors of the structural beams 12, the structural columns 11 and the structural plate 1 are all formed by casting steel mesh and concrete; a concrete foundation pedestal 2 for supporting the tower crane is provided on the existing structural plate 1. When installing the tower crane on the existing building structure, the staff finds the position to be installed on the structural plate 1, and there is a structural column 11 corresponding to the installation position below the installation position, and then a concrete foundation pedestal 2 is arranged on the structural plate 1, and the tower crane foundation structure is installed on the concrete foundation pedestal 2.

[0040] Reference Figure 1 and Figure 2The concrete foundation pedestal 2 includes a foundation pedestal steel mesh 21 arranged inside the concrete foundation pedestal. The thickness of the foundation pedestal steel mesh 21 is selected according to the height of the tower crane to be set. Pre-embedded legs 3 for the tower crane are arranged inside the foundation pedestal steel mesh 21. There are multiple pre-embedded legs 3 inside the foundation pedestal steel mesh 21. The distribution of the multiple pre-embedded legs 3 corresponds to the positions of the four corners of the rectangular standard section of the tower crane. The pre-embedded legs 3 are tied and fixed to the foundation pedestal steel mesh 21. When tying the foundation pedestal steel mesh 21, the pre-embedded legs 3 are arranged inside it to prevent the position of the pre-embedded legs 3 from changing when pouring concrete. A rectangular fixed frame 31 is connected to the upper end of the multiple embedded legs 3, and the upper end of the embedded legs 3 is fixed to the fixed frame 31 by bolts. When the later concrete pouring is completed and the concrete foundation pedestal 2 is completed, the staff can remove the fixed frame 31 to facilitate the installation of the standard section of the tower crane at the upper end of the embedded legs 3; the set fixed frame 31 can connect the multiple embedded legs 3 into a whole, preventing the upper end of the embedded legs 3 from a large offset when pouring concrete.

[0041] Reference Figure 2 and Figure 3 An installation groove 13 is opened on the existing structural plate 1 at the position of the structural column 11 and the structural beam 12. The size of the installation groove 13 is the same as the size of the concrete foundation cap 2. The foundation cap steel mesh 21 is arranged inside the installation groove 13, so that the cast concrete foundation cap 2 can be connected to the existing structural plate 1, thereby making the concrete foundation cap 2 more stable. A plurality of reinforcing steel bars 22 are connected and fixed to the foundation pedestal steel mesh 21. The reinforcing steel bars 22 are vertically arranged and arranged at the connection between the foundation pedestal steel mesh 21 and the structural plate 1. The plurality of reinforcing steel bars 22 are arranged along the length direction of the structural beam 12, and the plurality of steel bars are evenly arranged on the cross-shaped structural beam 12. The upper ends of the reinforcing steel bars 22 are fixed to the foundation pedestal steel mesh 21. Plug holes are opened on the structural plate 1 and the structural beam 12. The lower ends of the reinforcing steel bars 22 extend into the plug holes and are fixed to the existing steel bars in the structural beam 12. The foundation pedestal steel mesh 21 and the structural beam 12 are connected and fixed by the arranged reinforcing steel bars 22, so that the connection between the foundation pedestal steel mesh 21 and the structural beam 12 is made more firmly, thereby increasing the stability of the concrete foundation pedestal 2.

[0042] Reference Figure 1 and Figure 3, a plurality of supporting steel bars 23 are also arranged inside the foundation cap steel mesh 21, and the plurality of supporting steel bars 23 are evenly arranged at the lower ends of the plurality of embedded legs 3, the upper ends of the supporting steel bars 23 are fixed to the embedded legs 3, and the lower ends are supported on the structural plate 1, and the supporting steel bars 23 are fixed to the foundation cap steel mesh 21. The embedded legs 3 can be supported inside the foundation cap steel mesh 21 by the provided supporting steel bars 23, and the embedded legs 3 are fixed to the foundation cap steel mesh 21, and the upper ends of the embedded legs 3 are extended from the inside of the foundation cap steel mesh 21 to prevent them from being poured into the concrete. After the foundation pedestal steel mesh 21, supporting steel bars 23 and reinforcing steel bars 22 are set, concrete pouring begins to form the concrete foundation pedestal 2. When the concrete foundation pedestal 2 is solidified, a waterproof layer 4 is set at the connection between the existing structural plate 1 and the concrete foundation pedestal 2. The waterproof layer 4 extends to the structural plate 1 and the side of the concrete foundation pedestal 2. The waterproof material used in the waterproof layer 4 is the same as the waterproof material on the existing structure, and anti-cracking mortar is poured on the waterproof layer 4 for waterproof protection.

[0043] Reference Figure 1 and Figure 4 An anti-tilt assembly 5 is also provided on the foundation cap steel mesh 21 to prevent the embedded legs 3 from tilting. The anti-tilt assembly 5 includes a vertically arranged support rod 51. The support rod 51 is arranged inside the foundation cap steel mesh 21 and is located in the middle of multiple embedded legs 3. The lower end of the support rod 51 is supported on the structural plate 1, and a cross-shaped anti-tilt seat 52 is provided at the upper end of the support rod 51. The anti-tilt seat 52 is arranged below the fixed frame 31, and the four ends of the anti-tilt seat 52 are supported on the fixed frame 31. By supporting the anti-tilt seat 52 on the fixed frame 31, the embedded legs 3 can be prevented from deflecting during the process of pouring concrete or vibrating concrete, and the fixed frame 31 can be prevented from deflecting and tilting.

[0044] Reference Figure 4 and Figure 5 The anti-tilt assembly 5 also includes a hinge ball 53 fixed on the anti-tilt seat 52. The hinge ball 53 is located at the cross intersection of the anti-tilt seat 52, and the hinge ball 53 is rotatably matched with the upper end of the support rod 51, so that the anti-tilt seat 52 can swing around the position of the hinge ball 53. A plurality of fixing bolts 54 are provided at the position of the support rod 51 near its upper end. The fixing bolts 54 are threadedly connected to the support rod 51, and the fixing bolts 54 can be tightened against the hinge ball 53. When pouring concrete, the support rod 51 is prone to deviation. Therefore, the anti-tilt seat 52 is hingedly arranged. When the support rod 51 deviates, the anti-tilt seat 52 can be adjusted to a horizontal state by rotating the hinge ball 53. After the anti-tilt seat 52 is adjusted to a horizontal state, the anti-tilt seat 52 is fixed by the fixing bolts 54, so that the anti-tilt seat 52 is pressed against the fixed frame 31 to prevent the fixed frame 31 from tilting.

[0045] Reference Figure 4 and Figure 5 A plurality of spirit levels 55 are provided on the upper surface of the anti-tilt seat 52. The plurality of spirit levels 55 are evenly arranged along the cross direction of the anti-tilt seat 52. When adjusting whether the anti-tilt seat 52 is in a horizontal state, the staff adjusts the anti-tilt seat 52 by observing the spirit level 55, thereby adjusting the anti-tilt seat 52 to a horizontal state more quickly.

[0046] The support rod 51 consists of two parts, including a fixed part 511 and a movable part 512. The fixed part 511 is located inside the foundation base steel mesh 21, and the movable part 512 is arranged at the upper end of the fixed part 511, and the movable part 512 is located outside the foundation base steel mesh 21. The hinge ball 53 is rotatably fitted on the upper end of the movable part 512. The length direction of the fixed part 511 and the movable part 512 are the same, and the connection between the two is connected and fixed by a fastening bolt 513. When using the support rod 51, the movable part 512 is installed on the fixed part 511, and the fixed frame 31 is limited and fixed. After the concrete is poured and formed, the staff can remove the movable part 512 of the support rod 51 and move the anti-tilt seat 52 out from under the fixed frame 31 to avoid affecting the installation of the standard section of the tower crane.

[0047] The construction process of a concrete composite tower crane foundation structure applicable to an existing structure in an embodiment of the present application is as follows: when constructing a tower crane foundation on an existing structure, the worker selects a location on the existing structural plate 1, and chisels and cleans the existing structural plate 1, removes the waterproof layer 4 on the existing structural plate 1, and chisels out an installation groove 13 on the structural plate 1 for installing the foundation cap steel mesh 21, and then drills holes on the structural plate 1 inside the installation groove 13 and along the length direction of the cross-structural beam 12 to form a plurality of plug holes on the structural plate 1 and the structural beam 12, and then inserts and sets reinforcing steel bars 22 in the plug holes, and fixes the reinforcing steel bars 22 to the existing steel bars in the structural beam 12. After the reinforcing steel bars 22 are set, the installation groove 1 3, the foundation cap steel mesh 21 is tied and set, and is connected and fixed with the reinforcing steel bars 22. When tying the foundation cap steel mesh 21, the supporting steel bars 23, the embedded legs 3 and the fixed part 511 of the support rod 51 are arranged in the steel mesh in turn, so that the above three can be arranged in the foundation cap steel mesh 21. After the foundation cap steel mesh 21 is set, the movable part 512 is set at the upper end of the fixed part 511 of the support rod 51 and the anti-tilt seat 52 is installed, and then the anti-tilt seat 52 is adjusted to adjust the anti-tilt seat 52 to a horizontal state, and then according to the horizontal anti-tilt seat 52, a fixed frame 31 is installed at the upper end of multiple embedded legs 3, so that the four ends of the anti-tilt seat 52 can abut against the fixed frame 31, so that the fixed frame 31 is in a horizontal state.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A concrete composite tower crane foundation structure applicable to existing structures, characterized by: The invention comprises a structural plate (1) on an existing structure, a structural beam (12) arranged in a cross shape, and a structural column (11) arranged below the structural beam (12), wherein the upper end of the structural column (11) is supported and fixed at the cross point of the two structural beams (12), and the structural plate (1) is laid on the structural beam (12); a concrete foundation pedestal (2) is arranged on the structural plate (1) and above the cross structural beam (12), a foundation pedestal steel mesh (21) is arranged inside the concrete foundation pedestal (2), a plurality of pre-embedded legs (3) are arranged inside the foundation pedestal steel mesh (21), and the foundation pedestal steel mesh (21) is used for pouring concrete.

2. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: The upper ends of the plurality of embedded legs (3) are connected to a rectangular fixed frame (31).

3. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: The structural plate (1) is provided with an installation groove (13), and the foundation bearing platform steel mesh (21) is arranged in the installation groove (13).

4. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: A plurality of reinforcing steel bars (22) are connected and fixed to the foundation bearing platform steel mesh (21), and the plurality of reinforcing steel bars (22) are evenly arranged along the length direction of the structural beam (12). The reinforcing steel bars (22) are passed through the structural beam (12) and fixed to the existing structural steel bars in the structural beam (12).

5. The concrete composite tower crane foundation structure applicable to existing structures according to claim 4, characterized in that: A plurality of reinforcing steel bars (22) are evenly arranged on the structural beam (12) in a cross structure.

6. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: A plurality of supporting steel bars (23) are further provided inside the foundation cap steel mesh (21), the supporting steel bars (23) being fixed to the lower ends of the embedded legs (3), and the supporting steel bars (23) being fixed to the foundation cap steel mesh (21) and supported on the structural plate (1).

7. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: A waterproof layer (4) is provided at the position where the concrete foundation pedestal (2) is connected to the structural plate (1).

8. The concrete composite tower crane foundation structure applicable to existing structures according to claim 1, characterized in that: The foundation cap steel mesh (21) is also provided with an anti-tilt assembly (5) acting on the embedded legs (3), the anti-tilt assembly (5) comprising a support rod (51) vertically arranged on the foundation cap steel mesh (21) and located between a plurality of embedded legs (3), the upper end of the support rod (51) being provided with a cross-shaped anti-tilt seat (52), the anti-tilt seat (52) being horizontally arranged below the fixed frame (31) and pressed against the fixed frame (31).

9. The concrete composite tower crane foundation structure applicable to existing structures according to claim 8, characterized in that: A hinge ball (53) is fixed at the cross point of the anti-tilt seat (52), and the hinge ball (53) is rotatably fitted on the upper end of the support rod (51). A plurality of fixing bolts (54) are threadedly connected at positions near the upper end of the support rod (51), and the fixing bolts (54) can be tightened onto the hinge ball (53).

10. The concrete composite tower crane foundation structure applicable to existing structures according to claim 8, characterized in that: A plurality of levels (55) are provided in the cross direction of the anti-tilt seat (52) for ensuring that the anti-tilt seat (52) is in a horizontal state.

Images