Tower crane special-shaped foundation structure and construction method thereof

Abstract

The application discloses a tower crane special-shaped foundation structure and a construction method thereof. The existing engineering pile cap is utilized, and the pile caps on the opposite sides of the tower crane installation position are penetrated to form a second-stage cap foundation for tower crane installation. A force transmission component is arranged in the second-stage cap foundation formed after the penetration, so that the tower crane is uniformly stressed during rotation operation, the force transmission path is clear, and normal construction operation is ensured. The force transmission component comprises straight concealed beams, inclined concealed beams and connecting concealed beams. The concealed beams are added in the second-stage cap, so that the first-stage cap and the second-stage cap are connected as a whole, the cap is more firm, the upper load of the cap and the pile foundation is clearly conducted to the pile foundation, the cap and the pile foundation are uniformly stressed, the problems of cap cracking and local pile foundation stress being too large are avoided, and the safety of the tower crane is ensured. The application solves the problems of high cost and influence on construction period caused by the traditional method of introducing a pipe pile machine to construct additional pipe piles and a cap for the tower crane foundation in the later stage of construction site construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a tower crane irregular foundation structure and its construction method. Background Technology

[0002] On construction sites, tower cranes are generally used for vertical transportation. In some sites where tower cranes are needed later, traditional installation methods require the introduction of pipe pile drivers to construct additional pipe piles and foundations for the tower crane. On the one hand, the cost of adding new pipe piles is high; on the other hand, since the original pipe pile drivers have already been removed from the site, their re-entry increases costs and impacts the construction schedule.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a special-shaped tower crane foundation structure and its construction method are provided to solve the problem that the traditional method of introducing pipe pile driving machines to construct additional pipe piles and pile caps in the later stages of tower crane foundation construction on the construction site is costly and affects the construction period.

[0005] To achieve the above objectives, a special-shaped foundation structure for tower cranes is provided, comprising:

[0006] Two existing pile groups are respectively set on opposite sides of the tower crane installation position;

[0007] Two first-phase foundations are provided, with each existing pile group having a first-phase foundation poured on top. The two first-phase foundations are staggered and have opposite ends. The upper end of the existing pile group is anchored in the first-phase foundation.

[0008] The second-phase foundation is connected to the two first-phase foundations;

[0009] The force transmission component embedded in the second-phase foundation includes two straight concealed beams, two inclined concealed beams, and a connecting concealed beam. The two straight concealed beams are respectively located at both ends of the second-phase foundation, and both ends of the straight concealed beams extend to one end of the two first-phase foundations and connect to the upper end of the existing pile group. The two inclined concealed beams are arranged crosswise, and both ends of the inclined concealed beams are respectively connected between the opposite ends of the two straight concealed beams. The connecting concealed beam connects the two straight concealed beams, and the intersection point of the two inclined concealed beams coincides with the center of the plane of the installation position.

[0010] Furthermore, the straight concealed beam is connected to the intersection of the two inclined concealed beams.

[0011] Furthermore, each of the existing pile groups includes at least three pile bodies, which are arranged along the circumferential direction of the first-phase pier cap.

[0012] Furthermore, the two ends of the straight hidden beam are respectively connected to the upper ends of the existing pile bodies in the pile groups on opposite sides of the two phase one foundations.

[0013] Furthermore, the connecting hidden beam is arranged perpendicular to the straight hidden beam.

[0014] This invention provides a construction method for an irregularly shaped tower crane foundation structure, comprising the following steps:

[0015] A first-phase foundation is poured on top of two existing pile groups. The two first-phase foundations are staggered so that the upper end of the existing pile groups is anchored in the first-phase foundation.

[0016] Two straight hidden beams are cast between the two first-phase foundations, with both ends of the straight hidden beams extending to one end of the two first-phase foundations and connecting to the upper end of the existing pile group.

[0017] Two inclined hidden beams are cast between the two first-phase foundations, with the two ends of the inclined hidden beams respectively connected between the opposite ends of the two straight hidden beams, and the intersection of the two inclined hidden beams coincides with the center of the plane of the installation position.

[0018] A connecting beam is cast between the two straight concealed beams to form a force transmission component;

[0019] A second-stage foundation is cast between the two first-stage foundations, such that the second-stage foundation is connected to the two first-stage foundations and covers the force transmission component.

[0020] The beneficial effects of this invention are as follows: the irregular-shaped tower crane foundation structure and its construction method provide an optimized design for tower crane foundations. It utilizes existing pile foundations and connects the pile foundations on opposite sides of the tower crane installation location to form a secondary pile foundation for tower crane installation. The resulting secondary pile foundation is irregularly shaped. By incorporating force transmission components within the secondary pile foundation, the tower crane experiences uniform stress during rotation, ensuring a clear force transmission path and guaranteeing normal construction operations. Specifically, the force transmission components consist of straight concealed beams, inclined concealed beams, and connecting concealed beams. These concealed beams within the secondary pile foundation connect the primary and secondary pile foundations into a unified whole, making the pile foundation more robust. The path for transmitting the upper load from the pile foundation and pile foundation to the pile foundation is clear, ensuring uniform stress on the pile foundation and pile foundation. This avoids problems such as pile foundation cracking and excessive stress on localized pile foundations, thus ensuring tower crane safety. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the irregular-shaped foundation structure for a tower crane according to an embodiment of the present invention.

[0023] Figure 2 This is a plan view of the irregular-shaped foundation structure of the tower crane according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the first-phase foundation of an embodiment of the present invention. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Reference Figures 1 to 3 As shown, the present invention provides a tower crane irregular foundation structure, including: an existing pile group 1, a first-phase pile cap 2, a second-phase pile cap 3, and a force transmission component 4.

[0028] The existing pile group 1 consists of two sections. The two sections of existing pile group 1 are respectively located on opposite sides of the tower crane installation position 5. A foundation 2 is poured on top of each section of existing pile group 1.

[0029] In this embodiment, each existing pile group 1 includes at least three pile bodies 11. The at least three pile bodies 11 are arranged along the circumferential direction of the first-phase pile cap 2.

[0030] See Figure 2 As shown, one existing pile group includes three pile bodies 11, which are arranged in a triangular pattern; another existing pile group includes four pile bodies 11, which are arranged in a rectangular pattern.

[0031] In this embodiment, the two primary pile caps 2 are staggered. In this embodiment, taking the tower crane installation position 5 as the reference point, one primary pile cap on the existing pile group is offset to one side of the tower crane installation position 5, and the other primary pile cap on the existing pile group is offset to the other side of the tower crane installation position 5.

[0032] Phase I pile cap 2 has two opposing ends. The upper end of the existing pile group 1 is anchored in Phase I pile cap 2. Phase II pile cap 3 connects the two Phase I pile caps 2. Force transmission component 4 is embedded in Phase II pile cap 3.

[0033] Specifically, the force transmission component 4 includes two straight concealed beams 41, two inclined concealed beams 42, and a connecting concealed beam. The two straight concealed beams 41 are respectively located at both ends of the second-phase foundation 3. Both ends of the straight concealed beams 41 extend to one end of each of the two first-phase foundations 2 and connect to the upper end of the existing pile group 1. The two inclined concealed beams 42 are arranged intersectingly. Both ends of the inclined concealed beams 42 connect to the opposite ends of the two straight concealed beams 41. The connecting concealed beam 43 connects the two straight concealed beams 41. The intersection point of the two inclined concealed beams 42 coincides with the center of the plane of the installation position 5.

[0034] Combination Figure 2 and Figure 3 As shown, the upper ends of the vertical main reinforcement bars of the existing engineering pile group are embedded in the first-phase pile cap and connected to the horizontal main reinforcement bars in the straight and inclined hidden beams.

[0035] The straight hidden beam 41 is connected to the intersection of the two inclined hidden beams 42. The two ends of the straight hidden beam 41 are respectively connected to the upper ends of the engineering pile bodies 11 in the existing engineering pile groups 1 on the opposite sides of the two first-phase foundations 2.

[0036] In this embodiment, the connecting hidden beam 43 and the straight hidden beam 41 are arranged perpendicularly.

[0037] This invention provides a construction method for an irregularly shaped tower crane foundation structure, comprising the following steps:

[0038] S1. A first-phase foundation 2 is poured on top of the two existing pile groups 1. The two first-phase foundations 2 are staggered so that the upper end of the existing pile group 1 is anchored in the first-phase foundation 2.

[0039] S2. Two straight hidden beams 41 are cast between the two first-phase pile caps 2. The two ends of the straight hidden beams 41 extend to one end of the two first-phase pile caps 2 and are connected to the upper end of the existing pile group 1.

[0040] S3. Two inclined hidden beams 42 are cast between the two first-stage foundations 2. The two ends of the inclined hidden beams 42 are respectively connected between the opposite ends of the two straight hidden beams 41. The intersection of the two inclined hidden beams 42 coincides with the center of the plane of the installation position 5.

[0041] S4. Cast a connecting beam 43 between the two straight hidden beams 41 to form a force transmission component 4.

[0042] S5. Cast a second-stage foundation 3 between the two first-stage foundations 2, so that the second-stage foundation 3 is connected to the two first-stage foundations 2 and covers the force transmission component 4.

[0043] This invention relates to a tower crane irregular foundation structure and its construction method, providing an optimized tower crane foundation design that utilizes existing pile foundations and connects the pile foundations on opposite sides of the tower crane installation location to form a secondary pile foundation for the tower crane. The resulting secondary pile foundation is irregularly shaped. By incorporating force transmission components within the secondary pile foundation, the tower crane experiences uniform stress during rotation, with a clear force transmission path, ensuring normal construction operations. Specifically, the force transmission components consist of straight concealed beams, inclined concealed beams, and connecting concealed beams. These concealed beams within the secondary pile foundation connect the primary and secondary pile foundations into a unified whole, making the pile foundation more robust. The path for transmitting the upper load from the pile foundation and pile foundation to the pile foundation is clear, ensuring uniform stress on the pile foundation and pile foundation, avoiding problems such as pile foundation cracking and excessive localized pile foundation stress, thus guaranteeing tower crane safety.

[0044] The tower crane irregular foundation structure and its construction method of the present invention save the process of driving additional pipe piles and eliminate the need for pile foundation testing, thereby saving the tower crane foundation construction period, improving the project progress speed, reducing the number of additional pile drivers, and saving project construction costs.

[0045] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A tower crane irregular foundation structure, characterized in that, include: Two existing pile groups are respectively set on opposite sides of the tower crane installation position; Two first-phase foundations are provided, with each existing pile group having a first-phase foundation poured on top. The two first-phase foundations are staggered and have opposite ends. The upper end of the existing pile group is anchored in the first-phase foundation. The second-phase foundation is connected to the two first-phase foundations; The force transmission component embedded in the second-phase foundation includes two straight concealed beams, two inclined concealed beams, and a connecting concealed beam. The two straight concealed beams are respectively located at both ends of the second-phase foundation, and both ends of the straight concealed beams extend to one end of the two first-phase foundations and connect to the upper end of the existing pile group. The two inclined concealed beams are arranged crosswise, and both ends of the inclined concealed beams are respectively connected between the opposite ends of the two straight concealed beams. The connecting concealed beam connects the two straight concealed beams, and the intersection point of the two inclined concealed beams coincides with the center of the plane of the installation position. The connecting hidden beam is connected at the intersection of the two inclined hidden beams.

2. The irregular-shaped foundation structure for tower cranes according to claim 1, characterized in that, Each existing pile group includes at least three pile bodies, which are arranged along the circumferential direction of the first-phase pier cap.

3. The irregular-shaped foundation structure for tower cranes according to claim 2, characterized in that, The two ends of the straight hidden beam are respectively connected to the upper ends of the existing pile bodies in the pile groups on the opposite sides of the two phase one foundations.

4. The irregular-shaped foundation structure for tower cranes according to claim 1, characterized in that, The connecting hidden beam is set perpendicular to the straight hidden beam.

5. A construction method for a tower crane irregular foundation structure as described in any one of claims 1 to 4, characterized in that, Includes the following steps: A first-phase foundation is poured on top of two existing pile groups. The two first-phase foundations are staggered so that the upper end of the existing pile groups is anchored in the first-phase foundation. Two straight hidden beams are cast between the two first-phase foundations, with both ends of the straight hidden beams extending to one end of the two first-phase foundations and connecting to the upper end of the existing pile group. Two inclined hidden beams are cast between the two first-phase foundations, with the two ends of the inclined hidden beams respectively connected between the opposite ends of the two straight hidden beams, and the intersection of the two inclined hidden beams coincides with the center of the plane of the installation position. A connecting beam is cast between the two straight concealed beams to form a force transmission component; A second-stage foundation is cast between the two first-stage foundations, such that the second-stage foundation is connected to the two first-stage foundations and covers the force transmission component.

Images