Tower crane steel pipe pile foundation

Abstract

The utility model relates to a tower crane steel pipe pile foundation which comprises a cross beam assembly, a concrete bearing platform and four steel pipe piles which correspond to four vertexes of a square and are buried underground in a tower crane erection area, concrete is poured into the steel pipe piles, and the steel pipe piles are connected through the cross beam assembly. The top of each steel pipe pile is connected with the concrete bearing platform; the tower crane steel pipe pile foundation further comprises a bearing plate assembly arranged in an underground soil tamping area, the four steel pipe piles are all connected with the bearing plate assembly, the bearing plate assembly is located below the concrete bearing platform, and the bearing plate assembly and the concrete bearing platform are arranged in a spaced mode. The tower crane steel pipe pile foundation solves the problem that a steel pipe pile of an existing tower crane foundation is lack of stable support, so that the bearing capacity is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of construction foundation technology, and in particular to a steel pipe pile foundation for tower cranes. Background Technology

[0002] In construction engineering, tower cranes are key pieces of equipment for vertical transportation, and the safety and stability of their foundations are of paramount importance. Traditional tower crane foundations use crossbeams to connect the steel pipe piles, enabling multiple piles to share the load and thus improving the load-bearing capacity of the steel pipe piles. However, when bearing tower crane loads in complex geological environments, the lack of stable support for the steel pipe piles can easily lead to foundation settlement, affecting the load-bearing capacity of the steel pipe piles. Utility Model Content

[0003] The main purpose of this utility model is to propose a steel pipe pile foundation for tower cranes, which aims to solve the problem that the existing tower crane foundations have insufficient bearing capacity due to the lack of stable support of the steel pipe piles.

[0004] To achieve the above objectives, this utility model proposes a steel pipe pile foundation for a tower crane, comprising a beam assembly, a concrete foundation, and four steel pipe piles embedded in the underground of the tower crane erection area at the four vertices of a corresponding square. The steel pipe piles are filled with concrete, and the steel pipe piles are connected to each other through the beam assembly, with the top of each steel pipe pile connected to the concrete foundation.

[0005] The tower crane steel pipe pile foundation also includes a bearing plate assembly located in the underground soil compaction area. All four steel pipe piles are connected to the bearing plate assembly, which is located below the concrete foundation and spaced apart from it.

[0006] According to some embodiments of the present invention, the crossbeam assembly includes four first crossbeams, and each adjacent steel pipe pile is connected by the first crossbeams, and two adjacent first crossbeams are connected to each other.

[0007] According to some embodiments of the present invention, the crossbeam assembly further includes two second crossbeams, and the two steel pipe piles corresponding to opposite corners of the square are connected through the second crossbeams.

[0008] According to some embodiments of the present invention, the bearing plate assembly includes four first bearing plates, each of which has an opening for the corresponding steel pipe pile to pass through and connect.

[0009] According to some embodiments of the present invention, the bearing plate assembly further includes a first stiffening plate, which is arranged in a right-angled triangle, wherein one right-angled side is connected to the side wall of the steel pipe pile, and the other right-angled side is connected to the top of the first bearing plate.

[0010] According to some embodiments of the present invention, a plurality of first stiffening plates are provided, and the plurality of first stiffening plates are evenly distributed along the circumference of the steel pipe pile.

[0011] According to some embodiments of the present invention, the bearing plate assembly includes a second bearing plate, which has four openings for the four steel pipe piles to pass through and connect.

[0012] According to some embodiments of the present invention, each of the steel pipe piles has multiple reinforcing bars connected to its top along its circumference, and each of the reinforcing bars is gradually extended away from the steel pipe pile.

[0013] According to some embodiments of the present invention, the crossbeam assembly is welded to the top of the steel pipe pile.

[0014] According to some embodiments of the present invention, the steel pipe pile includes a second stiffening plate and multiple steel pipes, and adjacent steel pipes are connected by the second stiffening plate.

[0015] This utility model has at least the following beneficial effects:

[0016] In this invention, the tower crane is mounted on the concrete foundation, which bears the crane's load and transfers it to the four connected steel pipe piles. Since the four steel pipe piles are squarely embedded underground in the crane's erection area, this square design eliminates any easy bending direction, preventing eccentric bending deformation and instability. The crossbeam assembly connects the steel pipe piles, forming a unified structure. This allows them to work collaboratively under the crane's load, evenly distributing the load and enhancing the piles' bearing capacity. This prevents excessive stress on individual piles, extends the foundation's lifespan, and improves overall safety. Simultaneously, the bearing plate assembly is placed in the compacted soil area, providing stable support to the four steel pipe piles. This prevents ground settlement and distributes some of the crane load transferred from the piles, further increasing their bearing capacity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A top view of a tower crane steel pipe pile foundation provided for an embodiment of this utility model;

[0019] Figure 2 for Figure 1 Front view of the steel pipe pile foundation of the central tower crane;

[0020] Figure 3 for Figure 1 Front view of a steel pipe pile;

[0021] Figure 4 This is a top view of another embodiment of the tower crane steel pipe pile foundation provided in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-Tower crane steel pipe pile foundation; 1-Crossbeam assembly; 11-First crossbeam; 12-Second crossbeam; 2-Concrete cap; 3-Steel pipe pile; 31-Steel pipe; 32-Second stiffening plate; 4-Bearing plate assembly; 41-First bearing plate; 42-First stiffening plate; 43-Second bearing plate; 5-Reinforcing bar. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This utility model provides a steel pipe pile foundation for tower cranes. Figures 1 to 4 This invention provides a specific embodiment of a steel pipe pile foundation for a tower crane.

[0028] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a tower crane steel pipe pile foundation 100, including a crossbeam assembly 1, a concrete foundation 2, and four steel pipe piles 3 corresponding to the four vertices of a square buried underground in the tower crane erection area. The steel pipe piles 3 are filled with concrete, and the steel pipe piles 3 are connected to each other through the crossbeam assembly 1, and the top of each steel pipe pile 3 is connected to the concrete foundation 2. The tower crane steel pipe pile foundation 100 also includes a bearing plate assembly 4 located in the underground soil compaction area. The four steel pipe piles 3 are all connected to the bearing plate assembly 4, and the bearing plate assembly 4 is located below the concrete foundation 2 and is spaced apart from the concrete foundation 2.

[0029] In this invention, the tower crane is mounted on the concrete foundation 2. The concrete foundation 2 bears the tower crane load and transfers the load to the four connected steel pipe piles 3. Since the four steel pipe piles 3 are squarely embedded underground in the tower crane erection area, the square design eliminates any easy bending direction for the tower crane, thus preventing eccentric bending deformation and instability. The crossbeam assembly 1 connects each steel pipe pile 3, forming a unified whole. When bearing the tower crane load, they work collaboratively, evenly distributing the load, thereby improving the bearing capacity of the steel pipe piles 3, preventing excessive stress on individual piles, extending the foundation's service life, and enhancing overall safety. Simultaneously, the bearing plate assembly 4 is placed in the compacted soil area underground, providing stable support for the four steel pipe piles 3. This prevents ground settlement and also shares some of the tower crane load transferred from the steel pipe piles 3, further enhancing their bearing capacity.

[0030] It should be noted that before the bearing plate assembly 4 is connected to the steel pipe pile 3, the silty soil within its projection range is compacted. A layered compaction method is adopted, with each layer not exceeding 300mm in thickness. Multiple compactions are performed using compaction machinery until the foundation bearing capacity reaches at least 110KPa. This provides a stable supporting foundation for the bearing plate assembly 4 and ensures that the steel pipe pile 3 will not have its bearing capacity affected by foundation settlement when bearing loads.

[0031] Specifically, the crossbeam assembly 1 and the steel pipe pile 3 are fixed together by welding. During welding, a multi-layer, multi-pass welding process is adopted to ensure that the weld is full, free of defects such as porosity and slag inclusion, and that the weld height and length meet the design requirements, so that a stable connection structure is formed between the crossbeam assembly 1 and the steel pipe pile 3.

[0032] Preferably, in some embodiments, such as Figure 1 As shown, the crossbeam assembly 1 includes four first crossbeams 11, which connect adjacent steel pipe piles 3. Adjacent first crossbeams 11 are also interconnected. This arrangement connects the four steel pipe piles 3 into a single unit via the four first crossbeams 11, allowing them to work collaboratively and distribute the load evenly when bearing tower crane loads, thereby improving the load-bearing capacity of the steel pipe piles 3. Simultaneously, the interconnection between adjacent first crossbeams 11 strengthens the connection between each steel pipe pile 3 and the first crossbeam 11, enhancing the structural strength and load-bearing capacity of the entire tower crane steel pipe pile foundation 100.

[0033] Furthermore, in some embodiments, such as Figure 1 As shown, the crossbeam assembly 1 also includes two second crossbeams 12, connecting the two steel pipe piles 3 at opposite corners of the square. This arrangement connects the two diagonally opposite steel pipe piles 3 via the second crossbeams 12, allowing the load on one pile 3 to be quickly transferred to the other three, further enhancing the load-bearing capacity of the entire tower crane steel pipe pile foundation 100, resulting in a more uniform load distribution and improved overall structural stability.

[0034] Specifically, in some embodiments, such as Figure 2 As shown, the crossbeam assembly 1 is welded to the top of the steel pipe pile 3. This arrangement, compared to connecting each crossbeam of the crossbeam assembly 1 through the steel pipe pile 3, avoids damaging the original structure of the steel pipe pile 3, prevents damage to the structural strength of the steel pipe pile 3, reduces the workload during construction, and simplifies welding.

[0035] The specific structure of the bearing plate assembly 4 is not limited, as long as it ensures that the bearing plate assembly 4 can be connected to each of the steel pipe piles 3 to support each of the steel pipe piles 3. For example, in some embodiments, such as Figure 1 As shown, the bearing plate assembly 4 includes four first bearing plates 41, each of which has an opening for the corresponding steel pipe pile 3 to pass through and connect. This arrangement divides the entire bearing plate into four first bearing plates 41, facilitating transportation and installation, and allowing for more flexible adaptation to different stress conditions. The position and size of each first bearing plate 41 can be flexibly adjusted according to the actual construction situation, more evenly transferring the tower crane load to the steel pipe pile 3, enhancing the bearing capacity of the top of the steel pipe pile 3, and avoiding localized stress concentration that could lead to damage or deformation of the steel pipe pile 3.

[0036] In another embodiment, such as Figure 4As shown, the bearing plate assembly 4 includes a second bearing plate 43 with four openings for the four steel pipe piles 3 to pass through and connect. This configuration makes the second bearing plate 43 a single, integral bearing plate. On one hand, it increases the area of ​​the bearing plate, providing a more stable bearing foundation for the steel pipe piles 3 and enhancing the bearing capacity of the top of the steel pipe piles 3. On the other hand, by connecting the four steel pipe piles 3 into a whole through the second bearing plate 43, it enhances the stress performance of the entire tower crane steel pipe pile foundation 100, makes the load distribution more even, and improves the overall structural stability.

[0037] It should be noted that the two embodiments described above each have their own advantages and disadvantages, and the choice can be made based on the actual construction situation.

[0038] To provide a more stable support foundation for the steel pipe piles 3, in some embodiments, such as Figure 2 As shown, the bearing plate assembly 4 also includes a first stiffening plate 42, which is arranged in a right-angled triangle, with one right-angled side connected to the side wall of the steel pipe pile 3 and the other right-angled side connected to the top of the first bearing plate 41. The first stiffening plate 42 increases the connection area between the first bearing plate 41 and the steel pipe pile 3, improving the overall structural stability and providing a more stable support foundation for the steel pipe pile 3. Simultaneously, the triangular arrangement of the first stiffening plate 42 applies an inwardly tilting support force to the steel pipe pile 3, preventing the tower crane from tilting towards the direction of the first stiffening plate 42.

[0039] Specifically, the first stiffening plate 42 is welded and fixed to the steel pipe pile 3, and the weld between the first stiffening plate 42 and the steel pipe pile 3 adopts a double-sided full welding process. Before welding, the welding part is cleaned and beveled to ensure welding quality.

[0040] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, multiple first stiffening plates 42 are provided, and the multiple first stiffening plates 42 are evenly distributed along the circumference of the steel pipe pile 3. With this arrangement, each first stiffening plate 42 applies an inwardly inclined supporting force to the steel pipe pile 3, so that the supporting force components in the horizontal direction cancel each other out, making the tower crane less prone to eccentric bending deformation and preventing instability.

[0041] In some embodiments, such as Figure 2As shown, each of the steel pipe piles 3 has multiple reinforcing bars 5 connected to its top along its circumference, and each reinforcing bar 5 is gradually widened in the direction away from the steel pipe pile 3. The multiple reinforcing bars 5 are arranged in a trumpet shape, with the upper part being larger than the lower part, which increases the connection area with the concrete foundation 2 located on top of the steel pipe pile 3, improves the connection strength, and enables the tower crane installed on the concrete foundation 2 to more stably transfer the load to the steel pipe pile 3, thereby enhancing the overall stability of the tower crane steel pipe pile foundation 100.

[0042] To accommodate the load-bearing requirements of tower cranes, the steel pipe piles 3 are buried at different depths, thus requiring different lengths. In some embodiments, such as... Figure 2 As shown, the steel pipe pile 3 includes a second stiffening plate 32 and multiple steel pipe piles 31, with adjacent steel pipe piles 31 connected by the second stiffening plate 32. By using multiple steel pipe piles 31 to increase the length of the steel pipe pile 3, and by connecting adjacent steel pipe piles 31 with the second stiffening plate 32, the connection strength is higher compared to the connection between individual steel pipe piles 31 by welding.

[0043] Specifically, the inner wall of the second stiffening plate 32 is arc-shaped to fit the outer wall of the steel pipe pile 31, thereby increasing the contact area and improving the connection strength.

[0044] Furthermore, in some embodiments, multiple second stiffening plates 32 are provided, and the multiple second stiffening plates 32 are evenly distributed along the circumference of the steel pipe pile 31. By increasing the connection area, the connection strength is further improved, ensuring the overall structural strength of the extended steel pipe pile 3.

[0045] The specific construction steps for the tower crane steel pipe pile foundation 100 are as follows:

[0046] Step 1: According to the design requirements, purchase materials such as steel pipe piles 3, first crossbeam 11, second crossbeam 12, steel bars 5, first bearing plate 41, first stiffening plate 42, second stiffening plate 32 and anchor bolts that meet the specifications, and conduct quality inspection on the materials to ensure that their performance meets the requirements.

[0047] Step 2: At the construction site, drive the steel pipe piles to the designed depth of 21.0m, with elevation control as the primary focus and penetration control as a secondary focus. During the process, keep monitoring records.

[0048] Step 3: Process the top of the steel pipe pile 3 by welding four first crossbeams 11 and two second crossbeams 12 to the top of the steel pipe pile 3. After welding, check the quality of the weld.

[0049] Step 4: Weld a ring of steel bars 5 to the top of each steel pipe pile 3, so that the steel bars 5 form a flared shape, to ensure that the steel bars 5 are firmly connected to the steel pipe pile 3.

[0050] Step 5: Install the first bearing plate 41 and the first stiffening plate 42 at a distance of 600mm from the top of the steel pipe pile 3. First, perform double-sided full welding, and then check the weld quality.

[0051] Step 6: If the steel pipe pile 3 needs to be extended, weld it according to the bevel welding process and add the second stiffening plate 32. After completion, perform non-destructive testing to ensure the quality of the extension.

[0052] Step 7: Connect the standard tower crane section to the top structure of the steel pipe pile 3 using anchor bolts, and pour the concrete foundation 2 to complete the installation and commissioning of the tower crane.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tower crane steel pipe pile foundation, characterized in that, The tower crane steel pipe pile foundation comprises a beam assembly, a concrete platform and four steel pipe piles buried in the ground in the four corners of a square corresponding to a tower crane erection area, concrete is poured into the steel pipe piles, the steel pipe piles are connected by the beam assembly, and the top of each steel pipe pile is connected with the concrete platform. The tower crane steel pipe pile foundation further comprises a bearing plate assembly arranged in a tamped soil area underground, the four steel pipe piles are connected with the bearing plate assembly, the bearing plate assembly is located below the concrete platform and is arranged in a spaced manner with the concrete platform.

2. The tower crane steel pipe pile foundation according to claim 1, characterized in that, The beam assembly comprises four first beams, each adjacent steel pipe pile is connected by the first beam, and two adjacent first beams are connected with each other.

3. The tower crane steel pipe pile foundation according to claim 2, characterized in that, The beam assembly further comprises two second beams, and two steel pipe piles corresponding to the opposite corners of the square are connected by the second beams.

4. The tower crane steel pipe pile foundation according to claim 1, wherein, The bearing plate assembly comprises four first bearing plates, and each first bearing plate is provided with an opening through which a corresponding steel pipe pile is connected.

5. The tower crane steel pipe pile foundation according to claim 4, characterized in that, The bearing plate assembly further comprises a first stiffener, the first stiffener is arranged in a right triangle, one of the right angles is connected with the side wall of the steel pipe pile, and the other right angle is connected with the top of the first bearing plate.

6. The tower crane steel pipe pile foundation according to claim 5, characterized in that, The first stiffener is provided in a plurality of forms, and the plurality of first stiffeners are uniformly arranged along the circumference of the steel pipe pile.

7. The tower crane steel pipe pile foundation according to claim 1, wherein, The bearing plate assembly comprises a second bearing plate, and the second bearing plate is provided with four openings through which the four steel pipe piles are connected.

8. The tower crane steel pipe pile foundation according to claim 1, wherein, The top of each steel pipe pile is connected with a plurality of steel bars along the circumference thereof, and each steel bar is arranged in a gradually expanding manner away from the steel pipe pile.

9. The tower crane steel pipe pile foundation according to claim 1, wherein, The beam assembly is welded to the top of the steel pipe pile.

10. The tower crane steel pipe pile foundation according to claim 1, wherein, The steel pipe pile comprises a second stiffener and a plurality of steel pipes, and each adjacent steel pipe is connected by the second stiffener.

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