A tower crane foundation

Abstract

This utility model belongs to the field of building construction technology, specifically relating to a tower crane foundation, including cast-in-place piles, lattice columns, and support plates. The lattice columns include vertical columns, with at least four columns spaced apart circumferentially along the cast-in-place piles. The lower ends of the columns are cast and connected within the cast-in-place piles, and the support plates are fixedly connected to the upper ends of the columns. It also includes connecting plates and reinforcing members. Two adjacent columns are connected by connecting plates. Multiple connecting plates are spaced apart along the column axis. The reinforcing members include upper and lower threaded rods parallel to the horizontal plane, spaced apart and fixedly connected. The upper threaded rod passes through the connecting plate on one side of the lattice column, and the lower threaded rod passes through the connecting plate on the other side of the lattice column. Both the upper and lower threaded rods are threadedly connected to locking nuts on their outer sides, with the locking nuts located on the outer side of the lattice column and abutting against the connecting plates. This design improves the structural strength and stability of the tower crane foundation, increases construction efficiency, and allows for the recycling and reuse of the structural columns, making it environmentally friendly.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a tower crane foundation. Background Technology

[0002] Tower cranes and other large lifting equipment are core equipment in the construction process, and the performance of their foundations directly determines the safety of equipment operation and construction efficiency. Currently, tower crane foundations mostly use slab-type reinforced concrete independent foundations. During tower crane operation, significant horizontal loads, overturning moments, and dynamic loads are generated. Concrete foundations, due to their relatively weak tensile and shear strength, are prone to cracking under long-term dynamic stress, especially in areas with complex geological conditions or uneven settlement. Crack propagation can lead to foundation instability, threatening the safety of the tower crane. To improve the horizontal resistance of tower crane foundations, steel lattice column foundations have been applied due to their high strength and good toughness. However, they are costly, and the splicing and installation precision requirements of steel structure foundations are extremely high. The complex welding process not only increases construction difficulty but is also susceptible to human error affecting overall stability.

[0003] Chinese patent CN222456164U discloses a prefabricated tower crane foundation applicable to various types of tower cranes. It adopts a conventional cross-shaped distribution beam foundation and adds horizontal connecting beams to the distribution beam to enhance the integrity and strength of the entire foundation. However, this foundation is not suitable for coastal areas, areas around rivers and lakes, and areas with high fill. In these areas, the soil is uneven and the foundation bearing capacity is low. The cross-shaped distribution beam foundation reinforced only by horizontal connecting beams may not be able to provide sufficient stable support, which can easily lead to problems such as foundation settlement and tilting, affecting the safe operation of the tower crane. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a stable and reliable tower crane foundation that improves construction efficiency, and whose structural columns can be recycled, saving costs and being environmentally friendly.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows: a tower crane foundation, including cast-in-place piles perpendicular to the horizontal plane, lattice columns, and support plates parallel to the horizontal plane. The lattice columns include at least four columns perpendicular to the horizontal plane, which are spaced apart circumferentially along the cast-in-place piles. The lower end of each column is cast into the cast-in-place pile, and the support plate is fixedly connected to the upper end of the column. The foundation also includes connecting plates and reinforcing members disposed within the space enclosed by the at least four columns. Two adjacent columns are connected by the connecting plates. Multiple connecting plates are provided, and the multiple connecting plates are spaced apart axially along the column. The connecting plates are provided with mounting through holes that penetrate radially along the lattice columns.

[0006] The reinforcing member includes an upper screw and a lower screw parallel to the horizontal plane. The upper screw and the lower screw are arranged at intervals in the vertical direction and are fixedly connected by an adapter. The upper screw passes through the mounting through hole of the connecting plate on one side of the lattice column and protrudes outward from the lattice column. The lower screw passes through the mounting through hole of the connecting plate on the other side of the lattice column and protrudes outward from the lattice column. A locking nut is fitted on the outer side of both the upper screw and the lower screw and is threadedly connected to the locking nut. The locking nut is located on the outer side of the lattice column and abuts against the connecting plate along the radial direction of the cast-in-place pile.

[0007] Furthermore, the cast-in-place pile is a bored cast-in-place pile; the cast-in-place pile includes a concrete pile body and a reinforcing cage cast inside the pile body.

[0008] Furthermore, there are four columns, which are evenly distributed around the circumference of the cast-in-place pile; the columns are angle steel structures and the right-angle openings of the angle steels face the center line of the lattice column.

[0009] Furthermore, the reinforcement also includes a connecting rod, with the upper screw fixedly connected to the upper end of the connecting rod and the lower screw fixedly connected to the lower end of the connecting rod; the upper screw, the lower screw, and the connecting rod are an integrally formed structure.

[0010] Furthermore, both the upper screw and the lower screw are perpendicular to the connecting rod.

[0011] Furthermore, the support plate is a steel plate structure.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: It provides a tower crane foundation combining cast-in-place piles and lattice columns. By setting cast-in-place piles, the entire tower crane foundation can be cast and fixed in a sufficiently strong and hard bearing soil layer. This allows the utility model to be applied in construction areas with soft soil or uneven soil distribution. It not only ensures the stability of the tower crane foundation but also reduces concrete pouring and setting time, improving the overall construction efficiency of the tower crane foundation. The toughness of the steel lattice columns improves the horizontal resistance of the tower crane foundation, preventing damage to the concrete cast-in-place piles from horizontal forces. The detachable connecting reinforcements on the lattice columns not only further improve the strength of the lattice columns but also facilitate their assembly and manufacturing. The reinforcements are recyclable, saving costs and being environmentally friendly. Furthermore, in windy weather, wind can pass through the gaps between the connecting plates and the unfilled installation holes, reducing the impact of wind on the stability of the tower crane and improving its erection stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the axial cross-sectional structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the axial side structure of the structural column in this utility model;

[0017] Figure 5 This is a schematic diagram of the assembly shaft side structure of the reinforcing member and the nut in this utility model;

[0018] Figure 6 This is a schematic diagram of the main structure of the reinforcing member and nut after assembly in this utility model;

[0019] Reference numerals in the attached drawings: 1-cast pile; 2-column; 3-connecting plate; 31-installation through hole; 4-reinforcing component; 41-upper screw; 42-lower screw; 5-locking nut; 9-support platform. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] As attached Figure 1-6 As shown, a tower crane foundation includes cast-in-place piles 1 perpendicular to the horizontal plane, lattice columns, and support platforms 9 parallel to the horizontal plane. The lattice columns include at least four vertical columns 2, which are spaced apart circumferentially along the cast-in-place piles 1. The lower ends of the columns 2 are cast into the cast-in-place piles 1, and the support platforms 9 are fixedly connected to the upper ends of the columns 2. The foundation also includes connecting plates 3 and reinforcing members 4 arranged within the space enclosed by the at least four columns 2. Two adjacent columns 2 are connected by the connecting plates 3. Multiple connecting plates 3 are provided and spaced apart axially along the columns 2. The connecting plates 3 are provided with mounting brackets that extend radially along the lattice columns. The reinforcement member 4 includes an upper screw 41 and a lower screw 42 parallel to the horizontal plane. The upper screw 41 and the lower screw 42 are spaced apart in the vertical direction and are fixedly connected by an adapter. The upper screw 41 passes through the mounting through hole 31 of the connecting plate 3 on one side of the lattice column and protrudes outward from the lattice column. The lower screw 42 passes through the mounting through hole 31 of the connecting plate 3 on the other side of the lattice column and protrudes outward from the lattice column. Locking nuts 5 are fitted on the outer sides of both the upper screw 41 and the lower screw 42 and are threadedly connected to the locking nuts 5. The locking nuts 5 are located on the outer side of the lattice column and abut against the connecting plate 3 radially along the cast-in-place pile 1. The reinforcement members 4 are spaced apart above the cast-in-place pile 1.

[0022] The cast-in-place pile 1 is a reinforced concrete structure, while the lattice column is a steel structure. During the prefabrication of the lattice column, adjacent columns 2 are first connected by connecting plates 3, so that at least four columns 2 are connected into a single structure. Then, the reinforcing members 4 are placed into the space enclosed by the multiple columns 2, and the upper screw 41 and lower screw 42 are respectively passed through the two sides of the lattice column. Finally, locking nuts 5 are fitted on the upper screw 41 and lower screw 42 respectively, and the locking nuts 5 are tightened to the connecting plates 3. The lattice column is generally prefabricated in the factory and transported to the construction site. When the lattice column arrives at the construction site, the pile hole of the cast-in-place pile 1 has been completed. Then, the reinforcing cage is placed into the pile hole, and the lower end of the column on the lattice column is fixed into the appropriate position in the pile hole. Finally, concrete is poured into the pile hole to form the structure, the tower crane foundation is completed, and the lattice column is exposed to the air. When the cast-in-place pile 1 has sufficient strength, the tower crane is erected and installed on the support platform 9. This utility model typically involves multiple units arranged along a horizontal plane, which cooperate to support and fix the tower crane. After construction is completed and the tower crane is dismantled, the lattice column exposed outside the cast-in-place pile 1 can be cut and recycled as a whole. After removing the fastening nuts 5, the reinforcement parts 4 on it can be reused to manufacture other structural columns, saving costs and being environmentally friendly.

[0023] This invention employs a structural form combining cast-in-place piles 1 and lattice columns to fix the entire tower crane foundation in a sufficiently strong and firm bearing soil layer. This allows the invention to be applied in construction areas with soft or unevenly distributed soil, ensuring the stability of the tower crane foundation while reducing concrete pouring and setting time, thus improving the overall construction efficiency. The toughness of the steel lattice columns enhances the horizontal resistance of the tower crane foundation, preventing damage to the concrete cast-in-place piles 1 from horizontal forces. The detachable reinforcement 4 on the lattice columns further improves their strength and facilitates assembly and manufacturing. The reinforcement 4 is recyclable, saving costs and being environmentally friendly. Furthermore, in windy conditions, wind can pass through the gaps between the connecting plates 3 and the unfilled mounting holes 31, reducing the impact of wind on the tower crane's stability and improving its stability in windy weather.

[0024] The cast-in-place pile 1 can be a bored cast-in-place pile or a driven cast-in-place pile. Preferably, the cast-in-place pile 1 is a bored cast-in-place pile. Bored cast-in-place piles have low construction costs, simple construction processes, and no vibration or noise pollution. The cast-in-place pile 1 includes a concrete pile body and a reinforcing cage cast inside the pile body. The reinforcing cage is used to enhance the rigidity and strength of the entire cast-in-place pile 1.

[0025] The number of columns 2 is generally an even number of four or more to facilitate the installation of the reinforcement components 4. The columns 2 can be made from steel materials such as channel steel, angle steel, steel pipe, and I-beams. Considering that the reinforcement components 4 need to be installed in the central area enclosed by multiple columns, the space enclosed by the columns 2 needs to be large enough. Therefore, preferably, there are four columns 2, evenly distributed along the circumference of the cast-in-place pile 1; the columns 2 are angle steel structures with the right-angle openings of the angle steel facing the centerline of the lattice column. This increases the space between the columns 2, facilitating the installation of the reinforcement components 4.

[0026] The connecting plate 3 is used to connect two adjacent columns 2, forming a structural column with multiple columns 2 as a whole. It is also used to install the reinforcing member 4. The connecting plate 3 can be a circular plate, rectangular plate, or ring plate, etc., and its two sides are welded to the outer walls of the columns 2 respectively. To ensure the structural stability of the structural column, the connecting plate should be welded at intervals in the space between the upper screw 41 and the lower screw 42 in the vertical direction. The mounting through hole 31 on the connecting plate 3 can be any shape of hole, such as a round hole or a square hole, and the outer diameter of the fastening nut 5 is required to be larger than the maximum diameter of the mounting through hole 31. When processing the structural column, the reinforcing member 4 is first installed into the structural column, and then the connecting plate 3 connected to the reinforcing member 4 is welded to the column 2.

[0027] The reinforcement member 4 is used to connect the connecting plates 3 on both sides of the structural column, improving the structural stability of the structural column. The upper screw 41 and lower screw 42 of the reinforcement member 4 can be welded together from plates or rod-shaped structures. Preferably, the reinforcement member 4 also includes a connecting rod 43, with the upper screw 41 fixedly connected to the upper end of the connecting rod 43 and the lower screw 42 fixedly connected to the lower end of the connecting rod 43; the upper screw 41, the lower screw 42, and the connecting rod 43 are integrally formed. The reinforcement member can be made of bent steel bars, which is not only convenient to process and manufacture, but also has higher strength compared to other connection methods, improving the strength and integrity of the structural column. As a further preferred embodiment, the upper screw 41 and the lower screw 42 are both perpendicular to the connecting rod 43, reducing the space required for assembling the reinforcement member 4 and facilitating the installation of the reinforcement member 4 by workers.

[0028] As a further preferred option, multiple reinforcement members 4 are provided, and the multiple reinforcement members 4 are evenly distributed around the circumference of the cast-in-place pile 1 to ensure that the connecting plates 3 located on either side of the structural column can be reinforced and connected by the reinforcement members 4, thereby improving the strength and integrity of the structural column.

[0029] Fastening bolt 5 is a standard part, which, together with reinforcement 4, secures both ends of reinforcement 4 to the structural column. Support platform 9 is used to directly support and connect the tower crane base. Support platform 9 can be a reinforced concrete structure or a steel plate structure. Considering recycling, it is preferred that the support platform 9 be a steel plate structure, which is easy to recycle and saves costs. Support platform 9 generally has through-hole mounting holes, and the tower crane base is fastened to support platform 9 with bolts. Support platform 9 is generally circular to avoid its sharp outer corners affecting the safety of construction workers.

[0030] In the description of this utility model, the terms "upper," "lower," "top," "bottom," "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0031] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tower foundation comprising a bored pile (1) perpendicular to the horizontal plane, a lattice column and a support plate (9) parallel to the horizontal plane, characterized in that: The lattice column includes at least four vertical columns (2) that are spaced apart around the circumference of the cast-in-place pile (1); the lower end of each column (2) is cast into the cast-in-place pile (1), and the support plate (9) is fixedly connected to the upper end of each column (2); it also includes a connecting plate (3) and a reinforcing member (4) arranged in the space enclosed by the at least four columns (2); two adjacent columns (2) are connected by the connecting plate (3); multiple connecting plates (3) are provided, and multiple connecting plates (3) are arranged at intervals along the axial direction of the column (2); the connecting plate (3) is provided with a through hole (31) that runs radially through the lattice column; The reinforcement component (4) includes an upper screw (41) and a lower screw (42) parallel to the horizontal plane. The upper screw (41) and the lower screw (42) are arranged at intervals in the vertical direction and are fixedly connected by an adapter. The upper screw (41) passes through the mounting through hole (31) of the connecting plate (3) on one side of the lattice column and protrudes outward from the lattice column. The lower screw (42) passes through the mounting through hole (31) of the connecting plate (3) on the other side of the lattice column and protrudes outward from the lattice column. The upper screw (41) and the lower screw (42) are both fitted with locking nuts (5) on their outer sides and are threadedly connected to the locking nuts (5). The locking nuts (5) are located on the outer side of the lattice column and abut against the connecting plate (3) radially along the grouting pile (1).

2. The tower crane foundation according to claim 1, characterized in that: The cast-in-place pile (1) is a bored cast-in-place pile; the cast-in-place pile (1) includes a cast-in-place pile body with a concrete structure and a steel cage cast inside the cast-in-place pile body.

3. The tower crane foundation according to claim 1, characterized in that: The column (2) is provided with four columns, which are evenly distributed around the circumference of the cast-in-place pile (1); the column (2) is an angle steel structure and the right-angle opening of the angle steel faces the center line of the lattice column.

4. The tower crane foundation according to any one of claims 1-3, characterized in that: The reinforcement component (4) also includes a connecting rod (43), the upper screw (41) is fixedly connected to the upper end of the connecting rod (43), and the lower screw (42) is fixedly connected to the lower end of the connecting rod (43); the upper screw (41), the lower screw (42) and the connecting rod (43) are an integrally formed structure.

5. The tower crane foundation according to claim 4, characterized in that: Both the upper screw (41) and the lower screw (42) are perpendicular to the connecting rod (43).

6. The tower crane foundation according to claim 4, characterized in that: The support plate (9) is a steel plate structure.

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