Tower crane foundation structure for subway upper cover construction
By using support columns and pedestal structures in the subway superstructure, the problem of tower crane foundations being unable to be directly constructed was solved, the effective transfer of tower crane loads and construction safety were achieved, and the risks of cover plate collapse and tower crane overturning were avoided.
Patent Information
- Application Number
- CN202422759014.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-13
AI Technical Summary
During the construction of the subway superstructure, it is impossible to build the tower crane foundation directly on the ground when the vehicle depot operating area has been built, and the vehicle depot cover plate has insufficient bearing capacity, resulting in safety hazards such as cover plate collapse and tower crane overturning.
Multiple supporting columns are connected into an integral structure through a pedestal. The pedestal is located above the cover plate, and the base of the tower crane is partially embedded in the pedestal. The strength of the pedestal is enhanced by connecting beams and cross beams, and the load of the tower crane is effectively transferred to the ground. The pedestal and partitions are used to prevent damage to the cover plate.
It achieves stable support and load transfer of the tower crane, prevents the cover plate from collapsing and the tower crane from overturning, and improves construction safety and the structural stability of the pedestal.
Smart Images
Figure CN223329879U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, in particular to a tower crane foundation structure used for subway superstructure construction. Background Art
[0002] With the acceleration of urbanization, urban functions are developing in a diversified direction, and subway construction is also developing rapidly. Subway superstructures have emerged, aiming to make full use of the upper space of subway stations and vehicle depots, promote urban development and improve the quality of life of residents.
[0003] In construction, tower cranes are usually used as material transportation tools, and the tower crane foundation is generally cast directly on the ground. However, in the construction of subway superstructures, when the operating area of the vehicle depot has been built, the tower crane foundation cannot be built directly on the ground. Moreover, when the supporting columns of the vehicle depot cover have been retracted and it is difficult to connect the column head steel bars upward, considering the impact of the vehicle depot cover's bearing capacity, building the tower crane foundation directly on the cover is likely to cause the cover to collapse, affecting the safety of the tower crane operation. Therefore, it is impossible to build the tower crane foundation directly on the cover. Measures need to be taken to build the tower crane foundation above the vehicle depot cover so that the tower crane foundation can stably support the tower crane and effectively transfer the tower crane load to the ground. Utility Model Content
[0004] At least one of the purposes of the present invention is to provide a tower crane foundation structure for subway cover construction, which can stably support the tower crane and effectively transfer the tower crane load to the ground through the support columns, thereby preventing the cover plate from collapsing and the tower crane from overturning.
[0005] In order to achieve the above-mentioned objectives, the technical solutions adopted by the present invention include the following aspects.
[0006] A tower crane foundation structure for subway superstructure construction comprises: a plurality of support columns connected into an integral structure via a pedestal, the pedestal being located above a cover plate, the tops of the support columns extending into the pedestal, a certain gap being provided between the pedestal and the cover plate, a tower crane base being provided on the pedestal, the tower crane base being partially located within the pedestal and partially extending out of the pedestal.
[0007] Preferably, a partition is provided in the gap between the support platform and the cover plate.
[0008] Preferably, three support columns are included, and the three support columns are respectively located at the vertices of a triangle, and the cross-sectional shape of the support platform is a triangle as a whole.
[0009] Preferably, a connecting beam is provided between two adjacent support columns, and a first crossbeam is provided between two adjacent connecting beams, the first end of the first crossbeam is connected to the first connecting beam, and the second end of the first crossbeam is connected to the second connecting beam; a second crossbeam intersecting with the first crossbeam is provided on the first crossbeam, the first crossbeam and the second crossbeam are in the same plane, the first end of the second crossbeam is connected to the third connecting beam, the second end of the second crossbeam is connected to the support column opposite to the third connecting beam or the second end of the second crossbeam is connected to the first connecting beam or the second connecting beam.
[0010] Preferably, the connecting beam, the first cross beam and the second cross beam are all arranged in the pedestal or the connecting beam, the first cross beam and the second cross beam are all arranged at the bottom of the pedestal.
[0011] Preferably, the tower crane base is arranged at the connection position of the first beam and the second beam, the center of the tower crane base is located at the intersection of the first beam and the second beam, the tower crane base is a rectangular structure, one diagonal line of the tower crane base is parallel to the central axis of the first beam, and the other diagonal line of the tower crane base is parallel to the central axis of the second beam.
[0012] Preferably, a cap steel mesh is provided near the top and near the bottom of the cap, respectively, and the cap steel meshes are connected by vertical tie bars.
[0013] Preferably, the first crossbeam is a member of constant cross-section or a member of variable cross-section, the second crossbeam is a member of constant cross-section or a member of variable cross-section, and the connecting beam is a member of constant cross-section or a member of variable cross-section.
[0014] Preferably, the first crossbeam and the second crossbeam are perpendicular to each other.
[0015] Preferably, the thickness of the foundation is 1.3~2m.
[0016] In summary, due to the adoption of the above technical solution, the present invention has at least the following beneficial effects:
[0017] By setting a pedestal on the cover plate, the pedestal and the constructed support columns are connected to form an integral structure. There is a certain gap between the pedestal and the cover plate. After the tower crane base is set on the pedestal, the tower crane base is partially embedded in the pedestal. The pedestal can stably support the tower crane and effectively transfer the tower crane load to the ground through the support columns, preventing the cover plate from collapsing and the tower crane from overturning.
[0018] By arranging a connecting beam, a first crossbeam and a second crossbeam in the pedestal, the structural strength of the pedestal can be further increased; the tower crane base is arranged at the connection position of the first crossbeam and the second crossbeam, and the center of the tower crane base is located at the intersection of the first crossbeam and the second crossbeam, a pair of diagonals of the tower crane base are parallel to the central axis of the first crossbeam, and another diagonal of the tower crane base is parallel to the central axis of the second crossbeam; the tower crane base is partially embedded in the first crossbeam and the second crossbeam, and partially extends out of the pedestal, which can improve the torsional resistance of the pedestal and ensure the safety of the tower crane operation.
[0019] The thickness of the pedestal is 1.3~2m. By increasing the weight of the pedestal, it can offset part of the influence of the tower crane load on the tension of the support column, reduce the difficulty of connecting the pedestal steel bars and the column head steel bars of the supported column, and ensure the stability of the pedestal. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a side view of a tower crane foundation structure for subway superstructure construction according to an exemplary embodiment of the present invention.
[0021] Figure 2 It is a top view of a tower crane foundation structure for subway superstructure construction according to an exemplary embodiment of the present invention.
[0022] Markings in the figure: 1-support column, 2-cover plate, 3-base, 4-partition, 5-connecting beam, 6-first crossbeam, 7-second crossbeam, 8-tower crane base. DETAILED DESCRIPTION
[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments to make the purpose, technical solutions and advantages of the present invention more clearly understood. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention.
[0024] like Figure 1 As shown, the tower crane foundation structure for subway cover construction of an exemplary embodiment of the present invention includes multiple support columns 1, the top of each support column 1 passes through the cover plate 2, and the multiple support columns 1 are connected into an integral structure through a base 3. The base 3 is located above the cover plate 2, and the top of the support column 1 extends into the base 3. There is a certain gap between the base 3 and the cover plate 2.
[0025] After the operation area of the vehicle depot has been built, the space under the cover plate 2 is the operation space of the vehicle depot. After the top of the support column 1 passes through the cover plate 2, it is difficult to connect the column head reinforcement upward when the top of the support column 1 has been retracted. Using the pedestal 3 to connect the support column 1 into an integral structure can not only reduce the difficulty of extending the column head reinforcement upward, but also, as the supporting structure of the tower crane, the pedestal 3 can not only stably support the tower crane and prevent the tower crane from overturning, but also transfer the load of the tower crane to the support column 1, and transfer it to the ground through the support column 1, thereby realizing effective transfer of the tower crane load and avoiding damage to the cover plate 2 due to the tower crane load; the pedestal 3 and the support column 1 are connected into an integral structure, which can offset part of the tensile effect of the tower crane load on the support column 1, and further improve the stability of the tower crane on the pedestal 3.
[0026] A partition 4 is installed in the gap between the pedestal 3 and the cover plate 2 (the gap width is 150 mm to 200 mm). This partition 4 prevents contact between the pedestal 3 and the cover plate 2, preventing the crane load from being directly transferred to the cover plate 2 and damaging it. The partition 4 is made of extruded board or polystyrene board, and the installation area of the partition 4 is preferably the same as that of the pedestal 3. The partition 4 has a certain degree of elasticity. When the pedestal 3 deforms under the action of the crane load, the elastic deformation of the partition 4 effectively prevents damage to the cover plate 2.
[0027] refer to Figure 2 , multiple support columns 1 are preferably arranged in a triangular shape. The triangular arrangement is beneficial to improving the stability of the overall structure formed by the support columns 1 and the pedestal 3, effectively dispersing the load transferred by the pedestal 3, and preventing the pedestal 3 from deformation and damage. During application, the support columns 1 are constructed when the vehicle depot operating space is constructed. When setting up the pedestal, it is preferred to use three support columns 1. The three support columns 1 are respectively arranged at the three vertices of the triangle. After the pedestal 3 is set on the three support columns 1, the cross-sectional shape of the pedestal 3 is a triangle as a whole. The cross-sectional area of the pedestal 3 is the same as the area of the triangular area surrounded by multiple support columns 1. On the one hand, it can stably support the tower crane and disperse the tower crane load. On the other hand, it can reduce the amount of concrete used and reduce construction costs.
[0028] The cap 3 can be a plain concrete structure or a steel-concrete structure. Setting the cap 3 as a steel-concrete structure can improve the structural strength of the cap 3 and improve the bearing capacity and load dispersion effect of the cap 3.
[0029] A connecting beam 5 is also provided between two adjacent support columns 1, and both ends of the connecting beam 5 are respectively connected to the support columns 1; when three support columns 1 are used and the three support columns 1 are arranged in a triangle, a first crossbeam 6 is provided between two adjacent connecting beams 5, the first end of the first crossbeam 6 is connected to the first connecting beam 5, and the second end of the first crossbeam 6 is connected to the second connecting beam 5, and a second crossbeam 7 intersecting with the first crossbeam 6 is provided on the first crossbeam 6 (the first crossbeam 6 and the second crossbeam 7 are preferably perpendicular to each other), the second crossbeam 7 and the first crossbeam 6 are in the same plane, the first end of the second crossbeam 7 is connected to the third connecting beam 5, and the second end is connected to the support column 1 opposite to the third connecting beam 5 or the second end of the second crossbeam 7 is connected to the first connecting beam 5 or the second connecting beam 5.
[0030] The connecting beam 5, first crossbeam 6, and second crossbeam 7 can be cast into the pedestal 3 along with the pedestal concrete. As concealed beams of the pedestal 3, the connecting beam 5, first crossbeam 6, and second crossbeam 7 can further enhance the bearing capacity of the pedestal 3 and improve the ability to disperse the tower crane load on the pedestal 3. The connecting beam 5, first crossbeam 6, and second crossbeam 7 can also be arranged at the bottom of the pedestal 3, that is, the bottom surface of the pedestal 3 contacts the top surface of the connecting beam 5, the top surface of the first crossbeam 6, and the top surface of the second crossbeam 7, respectively. When this structure is adopted, a certain gap (150 mm to 200 mm) is provided between the first crossbeam 6 and the cover plate 2, and the partition 4 is arranged between the first crossbeam 6 and the cover plate 2.
[0031] When the connecting beam 5, the first cross beam 6 and the second cross beam 7 are arranged in the pedestal 3, the steel bars at both ends of the connecting beam 5 are respectively connected to the column head steel bars at the top of the supporting column 1, the steel bars at both ends of the first cross beam 6 are respectively connected to the steel bars of the connecting beam 5, and after the steel bars of the second cross beam 7 are connected to the steel bars of the first cross beam 6, the steel bars at the first end of the second cross beam 7 are connected to the steel bars of the third connecting beam 5, and the steel bars at the second end of the second cross beam 7 are connected to the column head steel bars of the supporting column 1 opposite to the first connecting beam 5 or the steel bars at the second end of the second cross beam 7 are connected to the steel bars of the first connecting beam 5 or the second connecting beam 5. In the process of tying the pedestal reinforcement, pedestal reinforcement meshes are respectively arranged near the top and near the bottom of the pedestal 3, and the pedestal reinforcement meshes are connected by vertical tie bars. The pedestal reinforcement meshes are also respectively connected to the column head steel bars of the supporting column 1, the steel bars of the connecting beam 5, the steel bars of the first cross beam 6 and the steel bars of the second cross beam 7.
[0032] When setting up the tower crane base 8, it is preferred to set the tower crane base 8 at the connection position of the first crossbeam 6 and the second crossbeam 7; the tower crane base 8 adopts a steel frame with a rectangular cross section, the center of the tower crane base 8 is located at the intersection of the first crossbeam 6 and the second crossbeam 7, one diagonal of the tower crane base 8 is parallel to the central axis of the first crossbeam 6, and the other diagonal of the tower crane base 8 is parallel to the central axis of the second crossbeam 7, so as to improve the torsional resistance of the pedestal 3. In the process of setting up the pedestal 3, the tower crane base 8 is extended into the pedestal, and after the pedestal concrete is poured, the tower crane base 8 is pre-embedded in the pedestal 3; when the tower crane base 8 is installed at the connection position of the first crossbeam 6 and the second crossbeam 7, in the process of setting the steel bars of the first crossbeam 6 and the second crossbeam 7, the tower crane base 8 is connected to the steel bars of the first crossbeam 6 and the second crossbeam 7, and after the pedestal concrete is poured, the tower crane base 8 is pre-embedded in the pedestal 3.
[0033] The first crossbeam 6 can be a member of constant cross-section or a member of variable cross-section. When the first crossbeam 6 is a member of variable cross-section, the cross-sectional area of the first crossbeam 6 gradually decreases from the connection between the first crossbeam 6 and the second crossbeam 7 to the two ends of the first crossbeam 6 along the length direction of the first crossbeam 6, so as to improve the shear and bending resistance of the first crossbeam 6; the second crossbeam 7 and the connecting beam 5 both adopt the same structure as the first crossbeam 6. When the second crossbeam 7 is a member of variable cross-section, the cross-sectional area of the second crossbeam 7 gradually decreases from the connection between the second crossbeam 7 and the first crossbeam 6 to the two ends of the second crossbeam 7 along the length direction of the second crossbeam 7; when the connecting beam 5 is a member of variable cross-section, the cross-sectional area of the connecting beam 5 gradually decreases from the connection between the connecting beam 5 and the first crossbeam 6 or the second crossbeam 7 to the two ends of the connecting beam 5 along the length direction of the connecting beam 5.
[0034] During application, the thickness of the pedestal 3 is 1.3~2m (preferably 1.35m). Increasing the thickness of the pedestal 3 can further improve the pedestal capacity of the pedestal 3, prevent the support column 1 from being subjected to tension under the action of the tower crane load, and affect the stability of the support column 1; when the connecting beam 5, the first cross beam 6 and the second cross beam 7 are all equal-section components, the cross-sectional dimensions of the connecting beam 5, the first cross beam 6 and the second cross beam 7 are the same, and the length*width is preferably 800mm*1350mm.
[0035] The above description is merely a detailed description of the specific embodiments of the present invention, and does not limit the present invention. Any substitutions, modifications, and improvements made by those skilled in the relevant art without departing from the principles and scope of the present invention should be included within the scope of protection of the present invention.
Claims
1. A tower crane foundation structure for subway superstructure construction, characterized in that: include: A plurality of support columns (1), the top of each support column (1) passes through a cover plate (2), and the plurality of support columns (1) are connected to form an integral structure through a support platform (3), wherein the support platform (3) is located above the cover plate (2), and the top of the support column (1) extends into the support platform (3), and there is a certain gap between the support platform (3) and the cover plate (2), and a tower crane base (8) is provided on the support platform (3), and the tower crane base (8) is partially located in the support platform (3) and partially extends out of the support platform (3).
2. The tower crane foundation structure for subway superstructure construction according to claim 1 is characterized in that: A partition plate (4) is provided in the gap between the support platform (3) and the cover plate (2).
3. The tower crane foundation structure for subway superstructure construction according to claim 1, characterized in that: It comprises three support columns (1), the three support columns (1) are respectively located at the vertices of a triangle, and the cross-sectional shape of the support platform (3) is a triangle as a whole.
4. The tower crane foundation structure for subway superstructure construction according to claim 3 is characterized in that: A connecting beam (5) is provided between two adjacent support columns (1), and a first crossbeam (6) is provided between the two adjacent connecting beams (5), wherein a first end of the first crossbeam (6) is connected to the first connecting beam (5), and a second end of the first crossbeam (6) is connected to the second connecting beam (5); a second crossbeam (7) intersecting with the first crossbeam (6) is provided on the first crossbeam (6), wherein the first crossbeam (6) and the second crossbeam (7) are in the same plane, a first end of the second crossbeam (7) is connected to the third connecting beam (5), a second end of the second crossbeam (7) is connected to the support column (1) opposite to the third connecting beam (5), or a second end of the second crossbeam (7) is connected to the first connecting beam or the second connecting beam.
5. The tower crane foundation structure for subway superstructure construction according to claim 4 is characterized in that: The connecting beam (5), the first cross beam (6), and the second cross beam (7) are all arranged in the support platform (3), or the connecting beam (5), the first cross beam (6), and the second cross beam (7) are all arranged at the bottom of the support platform (3).
6. The tower crane foundation structure for subway superstructure construction according to claim 4, characterized in that: The tower crane base (8) is arranged at the connection position of the first crossbeam (6) and the second crossbeam (7), the center of the tower crane base (8) is located at the intersection of the first crossbeam (6) and the second crossbeam (7), the tower crane base (8) is a rectangular structure, one diagonal line of the tower crane base (8) is parallel to the central axis of the first crossbeam (6), and the other diagonal line of the tower crane base (8) is parallel to the central axis of the second crossbeam (7).
7. The tower crane foundation structure for subway superstructure construction according to claim 4, characterized in that: A cap steel mesh is provided near the top and near the bottom of the cap (3), and the cap steel meshes are connected by vertical tie bars.
8. The tower crane foundation structure for subway superstructure construction according to claim 4, characterized in that: The first cross beam (6) is a constant cross-section member or a variable cross-section member, the second cross beam (7) is a constant cross-section member or a variable cross-section member, and the connecting beam (5) is a constant cross-section member or a variable cross-section member.
9. The tower crane foundation structure for subway superstructure construction according to claim 4, characterized in that: The first crossbeam (6) and the second crossbeam (7) are perpendicular to each other.
10. The tower crane foundation structure for subway superstructure construction according to any one of claims 1 to 9, characterized in that: The thickness of the support platform (3) is 1.3-2 m.