Tower crane foundation structure arranged on original underground structure top plate and construction method of tower crane foundation structure

Abstract

The invention relates to a tower crane foundation structure arranged on an original underground structure top plate and a construction method of the tower crane foundation structure. The tower crane foundation structure comprises a plurality of steel plates, supporting steel bars, concrete supporting columns, a concrete main beam, a concrete secondary beam and a concrete connecting plate; each steel plate corresponds to an original underground structure frame column below an original underground structure top plate, supporting steel bars are welded to each steel plate, main beam steel bars are bound between the supporting steel bars on every two adjacent steel plates, and secondary beam steel bars are bound between every two sets of oppositely-arranged main beam steel bars. Concrete connecting plate steel bars are bound on the main beam steel bars; the upper surface of each steel plate is connected with a concrete supporting column. A concrete main beam is connected between every two adjacent concrete supporting columns. A concrete secondary beam is connected between the two concrete main beams which are oppositely arranged; the concrete main beams, the concrete secondary beams and the concrete supporting columns are connected with concrete connecting plates. The structure is stable, and construction is easy.

Description

Technical Field

[0001] The present invention relates to the technical field related to building construction, and in particular to a tower crane foundation structure arranged on a top plate of an original underground structure and a construction method thereof. Background Art

[0002] The existing conventional tower crane foundation is generally set outside the structure of the building under construction or below the bottom of the raft. In many cases, the tower crane foundation set outside the structure cannot meet the use function and progress requirements of the building under construction. In addition, the underground building has been completed and put into operation, and the tower crane foundation cannot be set inside the existing building. Therefore, it is not feasible to pass the tower crane through the existing underground structure and fix the tower crane on the foundation at the bottom of the existing structure. During the construction of the existing underground structure, the construction method of arranging the tower crane foundation on the underground structure requires reserving the tower crane foundation position before the construction of the underground structure, and reserving holes on the top plate of the existing structure foundation for the tower crane to pass through the existing underground structure and be fixed on the foundation at the bottom of the existing structure. Such an arrangement of the tower crane foundation seriously affects the time node for the underground building to be put into operation. After the tower crane is dismantled, the opened holes need to be repaired. The reserved holes are a large leakage risk point, the construction is relatively complicated, and it also affects the operation of the underground building. Moreover, in the prior art, the tower crane foundation is arranged on the existing structural top plate, and the temporary load of the tower crane foundation is not considered when the existing structural plate is designed, resulting in poor bearing capacity of the existing underground structural top plate and concentrated load on the tower crane. The existing underground structural top plate cannot bear the total weight of the tower crane foundation + the tower crane itself + the maximum lifting weight. Summary of the invention

[0003] In order to solve the technical problem that a tower crane foundation cannot be directly arranged on an existing structural top plate of an underground structure, resulting in high construction measures and low construction efficiency, the present invention provides a tower crane foundation structure arranged on the original underground structure top plate and a construction method thereof.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a tower crane foundation structure arranged on the top plate of the original underground structure includes a steel plate, supporting steel bars, concrete supporting columns, concrete main beams, concrete secondary beams and concrete connecting plates. Three or more steel plates are arranged on the top plate of the original underground structure, each of which is arranged corresponding to an original underground structure frame column below the top plate of the original underground structure. Supporting steel bars are welded on each steel plate, main beam steel bars are tied between the supporting steel bars on two adjacent steel plates, secondary beam steel bars are tied between two groups of main beam steel bars arranged oppositely, and concrete connecting plate steel bars are also tied to the main beam steel bars;

[0005] The upper surface of each steel plate is connected to a concrete support column, and the supporting steel bars are embedded in the corresponding concrete support column; a concrete main beam is connected between two adjacent concrete support columns, and the main beam steel bars are embedded in the corresponding concrete main beam; a concrete secondary beam is connected between two relatively arranged concrete main beams, and the secondary beam steel bars are embedded in the corresponding concrete secondary beam; concrete connecting plates are connected to the concrete main beam, concrete secondary beam and concrete support columns, and the concrete connecting plate steel bars are embedded in the concrete connecting plates.

[0006] The beneficial effects of the present invention are as follows: the tower crane foundation structure of the present invention is arranged on the top plate of the original underground structure, and bears the load with the help of the original underground structure frame columns. The structure is stable and reliable, there is no need to destroy the original underground structure, there is no need to open holes in the existing underground structure plates, and the normal operation of the underground structure is not affected. The impact on the underground operating unit is small, the steps of opening and repairing holes are omitted, the construction is simple, and the construction efficiency is improved.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, more than four steel plates are provided on the top plate of the original underground structure, and the more than four steel plates are arranged in a rectangular structure.

[0009] The beneficial effect of adopting the above further solution is that by adopting more than four steel plates arranged in a rectangular structure, uniform load bearing can be achieved and the tower crane structure is stable and reliable.

[0010] Furthermore, a plurality of concrete secondary beams form a grid-type structure.

[0011] The beneficial effect of adopting the above further solution is that the structure of the concrete secondary beam is made stable and reliable.

[0012] Furthermore, a space is reserved between the bottom of the concrete main beam and the top plate of the original underground structure; and a space is reserved between the bottom of the concrete secondary beam and the top plate of the original underground structure.

[0013] The beneficial effect of adopting the above further solution is that by reserving intervals, the top plate of the original underground structure is free from load.

[0014] Furthermore, the circumferential sides of the steel plates all exceed the circumferential sides of the original underground structure frame columns by a preset distance.

[0015] Furthermore, the concrete connecting plate reinforcement is also tied and fixed to the secondary beam reinforcement.

[0016] Furthermore, the concrete connecting plate reinforcement is also tied and fixed to the main building raft slab reinforcement.

[0017] Furthermore, the top surface of the concrete connecting plate is flush with the top surface of the main building raft slab above the original underground structure top plate.

[0018] Furthermore, tower crane foundation embedded bolts are fixed on the secondary beam reinforcement, the tower crane foundation embedded bolts are embedded in the concrete secondary beam and the concrete connecting plate, and the upper ends of the tower crane foundation embedded bolts extend from the top surface of the concrete connecting plate by a preset length.

[0019] The beneficial effect of adopting the above further solution is that by arranging the pre-embedded bolts in the tower crane foundation, the tower crane can be stably connected and fixed.

[0020] The construction method of the tower crane foundation structure arranged on the top plate of the original underground structure comprises the following steps:

[0021] S1, locate the installation position of the tower crane above the top plate of the original underground structure, and locate the position of the original underground structure frame column on the top plate of the original underground structure;

[0022] S2, fixing a steel plate on the upper surface of the top plate of the original underground structure above the selected original underground structure frame column, and welding supporting steel bars on the steel plate;

[0023] S3, tying the main beam steel bars to the supporting steel bars on the two adjacent steel plates, tying the secondary beam steel bars to the two sets of main beam steel bars arranged oppositely; tying the concrete connecting plate steel bars to the main beam steel bars;

[0024] S4, fix the tower crane foundation embedded bolts on the secondary beam reinforcement;

[0025] S5, formwork is set up on the outside of the supporting steel bars, the outside of the main beam steel bars, the outside of the secondary beam steel bars and the outside of the concrete connecting plate steel bars, and concrete is poured in the formwork to form concrete supporting columns, concrete main beams, concrete secondary beams and concrete connecting plates. The upper ends of the embedded bolts of the tower crane foundation extend from the top surface of the concrete connecting plate to a preset length for tower crane installation.

[0026] The beneficial effects of the present invention are as follows: the construction method of the present invention has simple construction, high construction efficiency, and a stable and reliable construction structure; the final tower crane foundation structure can be backfilled as a structural pavement without the need for demolition, thus saving subsequent operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the steel plate arrangement of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a concrete support column arranged on a steel plate of the present invention;

[0029] Figure 3 It is a schematic diagram of the internal structure of the tower crane foundation structure arranged on the top plate of the original underground structure of the present invention;

[0030] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Steel plate; 2. Concrete support column; 3. Concrete main beam; 4. Concrete secondary beam; 5. Original underground structure top plate; 6. Original underground structure frame column; 7. Concrete connecting plate; 8. Main building raft slab; 9. Embedded bolts for tower crane foundation; 10. Tower crane. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figure 1 to Figure 4 As shown, the tower crane foundation structure of this embodiment arranged on the top plate of the original underground structure includes a steel plate 1, supporting steel bars, a concrete supporting column 2, a concrete main beam 3, a concrete secondary beam 4 and a concrete connecting plate 7. More than three steel plates 1 are arranged on the top plate 5 of the original underground structure, and each steel plate 1 is arranged corresponding to an original underground structure frame column 6 below the top plate 5 of the original underground structure. Supporting steel bars are welded on each steel plate 1, and main beam steel bars are tied between the supporting steel bars on two adjacent steel plates 1. Secondary beam steel bars are tied between two sets of main beam steel bars arranged oppositely, and concrete connecting plate steel bars are also tied to the main beam steel bars;

[0035] A concrete support column 2 is connected to the upper surface of each steel plate 1, and the supporting steel bars are embedded in the corresponding concrete support column 2; a concrete main beam 3 is connected between two adjacent concrete support columns 2, and the main beam steel bars are embedded in the corresponding concrete main beam 3; a concrete secondary beam 4 is connected between two relatively arranged concrete main beams 3, and the secondary beam steel bars are embedded in the corresponding concrete secondary beam 4; a concrete connecting plate 7 is connected to the concrete main beam 3, the concrete secondary beam 4 and the concrete support column 2, and the concrete connecting plate steel bars are embedded in the concrete connecting plate 7.

[0036] like Figure 1 to Figure 3 As shown, in this embodiment, the original underground structure top plate 5 is provided with more than four steel plates 1, and the more than four steel plates 1 are arranged in a rectangular structure. By using more than four steel plates arranged in a rectangular structure, it is possible to achieve uniform load bearing and a stable and reliable tower crane structure.

[0037] A preferred solution of this embodiment is as follows: Figure 1 to Figure 4 As shown, four steel plates 1 are used, and the four steel plates 1 are respectively located at a corner of the rectangular structure. Two concrete secondary beams 4 are vertically arranged between two oppositely arranged concrete main beams 3.

[0038] like Figure 3As shown, the multiple concrete secondary beams 4 of this embodiment form a grid structure, making the structure of the concrete secondary beams stable and reliable. Preferably, four concrete secondary beams 4 are used, and the four concrete secondary beams 4 are arranged in a grid structure.

[0039] like Figure 4 As shown, in this embodiment, a gap is reserved between the bottom of the concrete main beam 3 and the original underground structure top plate 5; a gap is reserved between the bottom of the concrete secondary beam 4 and the original underground structure top plate 5. By reserving the gap, the original underground structure top plate does not bear the load.

[0040] like Figure 4 As shown, the circumferential sides of the steel plate 1 in this embodiment all exceed the circumferential sides of the original underground structure frame column 6 by a preset distance. The steel plate 1 can be a rectangular steel plate, and the original underground structure frame column 6 also adopts a rectangular structure. Each side of the steel plate 1 exceeds each side of the original underground structure frame column 6 by a preset distance, such as 200 mm.

[0041] Preferably, the thickness of the steel plate 1 is 50 mm.

[0042] A preferred solution of this embodiment is that the concrete connecting plate reinforcement is also tied and fixed to the secondary beam reinforcement. The concrete connecting plate reinforcement is also tied and fixed to the main building raft reinforcement.

[0043] Preferably, Figure 4 As shown, the top surface of the concrete connecting plate 7 of this embodiment is flush with the top surface of the main building raft slab 8 above the original underground structure top plate 5.

[0044] like Figure 3 and Figure 4 As shown, the secondary beam reinforcement of this embodiment is fixed with a tower crane foundation embedded bolt 9, which is embedded in the concrete secondary beam 4 and the concrete connecting plate 7, and the upper end of the tower crane foundation embedded bolt 9 extends a preset length from the top surface of the concrete connecting plate 7. By arranging the tower crane foundation embedded bolt, a stable connection and fixation of the tower crane can be achieved.

[0045] Specifically, the intersections of the concrete secondary beam reinforcement and the concrete secondary beam reinforcement are all provided with tower crane foundation embedded bolts 9, and each intersection is preferably provided with four tower crane foundation embedded bolts 9. For example, all the concrete secondary beam reinforcements are crossed to form a tic-tac-toe structure, and a group of tower crane foundation embedded bolts 9 can be provided at each of the four intersections in the middle for connecting the tower crane.

[0046] The concrete main beam and the concrete secondary beam of this embodiment are combined to form a frame beam.

[0047] The tower crane foundation structure of this embodiment uses multiple concrete support columns to transfer the weight of the concrete main beam and the concrete secondary beam to the steel plate, and the steel plate evenly transfers the force to the original underground structure frame column, which is then transferred to the underground structure foundation by the original underground structure frame column. The tower crane foundation of this frame beam form is more flexible in layout, and can be flexibly arranged according to the position, size and form of the existing underground structure frame column, and the size of the tower crane foundation can be flexibly adjusted. The concrete connecting plate and the frame beam ensure the stability of the tower crane.

[0048] The tower crane foundation structure of this embodiment is arranged on the top plate of the original underground structure, and bears the load with the help of the original underground structure frame columns. The structure is stable and reliable, there is no need to destroy the original underground structure, there is no need to open holes in the existing underground structure plates, and the normal operation of the underground structure is not affected. The impact on the underground operating units is small, the steps of opening and repairing holes are omitted, the construction is simple, and the construction efficiency is improved.

[0049] The construction method of the tower crane foundation structure provided on the top plate of the original underground structure in this embodiment comprises the following steps:

[0050] S1, locate the installation position of the tower crane above the original underground structure top plate 5, and locate the position of the original underground structure frame column 6 on the original underground structure top plate 5;

[0051] S2, fixing a steel plate 1 on the upper surface of the original underground structure top plate 5 above the selected original underground structure frame column 6, and welding supporting steel bars on the steel plate 1;

[0052] S3, tying the main beam steel bars to the supporting steel bars on the two adjacent steel plates 1, tying the secondary beam steel bars to the two sets of main beam steel bars arranged oppositely; tying the concrete connecting plate steel bars to the main beam steel bars;

[0053] S4, fixing the tower crane foundation embedded bolts 9 on the secondary beam reinforcement;

[0054] S5, set up formwork on the outside of the supporting steel bars, the outside of the main beam steel bars, the outside of the secondary beam steel bars and the outside of the concrete connecting plate steel bars, and pour concrete in the formwork to form concrete support columns 2, concrete main beams 3, concrete secondary beams 4 and concrete connecting plates 7. The upper ends of the tower crane foundation embedded bolts 9 extend from the top surface of the concrete connecting plate 7 to a preset length for use in the installation of the tower crane 10.

[0055] Specifically, the construction method of this embodiment measures and locates the installation position of the tower crane above the original underground structure top plate 5 according to the tower crane plan layout; accurately locates the positions of the four original underground structure frame columns 6 on the original underground structure top plate 5 adjacent to the tower crane installation position according to the existing underground structure drawings, places a steel plate on the top of the original underground structure frame column 6 that has been capped, and the size of the steel plate is 200mm larger than each side of the original underground structure frame column 6, and welds the support column steel bars on the steel plate so that the size of the support column is the same as the size of the original underground structure frame column 6. According to the set support column steel bars, tie the main beam steel bars, tie the secondary beam steel bars on the two sets of main beam steel bars arranged relatively; tie the concrete connecting plate steel bars on the main beam steel bars; set the position of the secondary beam steel bars according to the position of the tower crane foundation embedded bolts, so that the tower crane foundation embedded bolts are set at the intersection of the cross beam. Set up the formwork, and after all the work preparations are completed and accepted, pour the concrete. After the concrete pouring is completed, cover it with water and maintain it in time to obtain concrete support columns, concrete main beams, concrete secondary beams and concrete connecting plates, so that the concrete main beams form a rectangular frame structure, and the grid structure formed by the concrete secondary beams is located within the rectangular frame structure.

[0056] Among them, after all the steel bars are tied, a lightning protection grounding device is embedded in the main beam steel bars, and the lightning protection grounding device is used to connect with the tower crane.

[0057] The construction method of this embodiment has the advantages of simple construction, high construction efficiency, stable and reliable construction structure, and the final tower crane foundation structure can be backfilled as a structural pavement without the need for demolition, thus saving subsequent operation steps.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. The tower crane foundation structure is set on the top plate of the original underground structure, characterized in that: It includes steel plates, supporting steel bars, concrete supporting columns, concrete main beams, concrete secondary beams and concrete connecting plates. Three or more steel plates are arranged on the top plate of the original underground structure, each of which is arranged corresponding to an original underground structure frame column below the top plate of the original underground structure. Supporting steel bars are welded on each steel plate, and main beam steel bars are tied between the supporting steel bars on two adjacent steel plates, and secondary beam steel bars are tied between two sets of main beam steel bars arranged oppositely. Concrete connecting plate steel bars are also tied to the main beam steel bars; The upper surface of each steel plate is connected to a concrete support column, and the supporting steel bars are embedded in the corresponding concrete support column; a concrete main beam is connected between two adjacent concrete support columns, and the main beam steel bars are embedded in the corresponding concrete main beam; a concrete secondary beam is connected between two relatively arranged concrete main beams, and the secondary beam steel bars are embedded in the corresponding concrete secondary beam; concrete connecting plates are connected to the concrete main beam, concrete secondary beam and concrete support columns, and the concrete connecting plate steel bars are embedded in the concrete connecting plates.

2. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The top plate of the original underground structure is provided with more than four steel plates, and the more than four steel plates are arranged in a rectangular structure.

3. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: Multiple concrete secondary beams form a grid-like structure.

4. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: A space is reserved between the bottom of the concrete main beam and the top plate of the original underground structure; a space is reserved between the bottom of the concrete secondary beam and the top plate of the original underground structure.

5. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The circumferential sides of the steel plates all exceed the circumferential sides of the original underground structure frame columns by a preset distance.

6. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The concrete connecting plate reinforcement is also tied and fixed to the secondary beam reinforcement.

7. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The concrete connecting plate reinforcement is also tied and fixed to the main building raft slab reinforcement.

8. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The top surface of the concrete connecting plate is flush with the top surface of the main building raft slab above the original underground structure top plate.

9. The tower crane foundation structure arranged on the top plate of the original underground structure according to claim 1 is characterized in that: The secondary beam reinforcement is fixed with tower crane foundation embedded bolts, which are embedded in the concrete secondary beam and the concrete connecting plate, and the upper ends of the tower crane foundation embedded bolts extend from the top surface of the concrete connecting plate by a preset length.

10. The construction method of a tower crane foundation structure arranged on the top plate of an existing underground structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, locate the installation position of the tower crane above the top plate of the original underground structure, and locate the position of the original underground structure frame column on the top plate of the original underground structure; S2, fixing a steel plate on the upper surface of the top plate of the original underground structure above the selected original underground structure frame column, and welding supporting steel bars on the steel plate; S3, tying the main beam steel bars to the supporting steel bars on the two adjacent steel plates, tying the secondary beam steel bars to the two sets of main beam steel bars arranged oppositely; tying the concrete connecting plate steel bars to the main beam steel bars; S4, fix the tower crane foundation embedded bolts on the secondary beam reinforcement; S5, formwork is set up on the outside of the supporting steel bars, the outside of the main beam steel bars, the outside of the secondary beam steel bars and the outside of the concrete connecting plate steel bars, and concrete is poured in the formwork to form concrete supporting columns, concrete main beams, concrete secondary beams and concrete connecting plates. The upper ends of the embedded bolts of the tower crane foundation extend from the top surface of the concrete connecting plate to a preset length for tower crane installation.

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