An assembled weight-bearing tower crane foundation structure

Abstract

The present invention discloses an assembled weighted tower crane foundation structure, including a tower crane base, a cross steel beam, a stressed steel box beam, bolts, and a weight block. The stressed steel box beam is a rectangular rigid structure. The bottom of the stressed steel box beam is fixedly connected to a basement frame column structure by bolts. The four ends of the cross steel beam are respectively placed on the stressed steel box beam. The tower crane base is placed on the stressed steel box beams on both sides of the cross steel beam. The weight blocks are respectively stacked on the tower crane bases on both sides of the cross steel beam. The present invention uses weight blocks and prefabricated stressed steel box beams as load-bearing components of the tower crane foundation, and is fixedly connected to the basement frame column structure by bolts. This not only avoids the problems of long construction time, non-reusability, and great construction difficulty of traditional pipe pile structures, but also avoids the problems of inconvenient turnover, easy damage, and poor seismic performance of prefabricated reinforced concrete beams. It has the characteristics of convenient disassembly and assembly, repeated turnover, good seismic performance, and safety and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled, weighted tower crane foundation structure which is convenient to assemble and disassemble, can be repeatedly used, has good seismic resistance, and is safe and reliable. Background Art

[0002] Tower crane is the most commonly used lifting equipment on construction sites, also known as "tower crane". It is connected in sections (referred to as "standard section"). Due to its large working space, it is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It is also often used to pour large-volume concrete in water conservancy projects. The tower crane relies on the suspended boom to lift heavy objects, which has a very large tipping moment and requires a high bearing capacity of the foundation. Therefore, the tower crane foundation structure is a necessary condition for maintaining the safe operation of the tower crane.

[0003] The foundation structure of a tower crane is generally made of concrete. The length, height, width and reinforcement of the foundation need to meet the requirements of the overturning stability of the tower crane, the bearing capacity of the foundation and the crack resistance of the foundation. However, for the installation of a tower crane in an environment where the basement has been completed and put into commercial use, the usual practice is to use cast-in-place piles, steel pipe piles + lattice steel columns, steel pipe columns + concrete caps or steel platforms. Although the aforementioned construction methods can meet the requirements of the tower crane foundation structure, the combined foundation is complex to install, has high cost and poor seismic performance. In the case of a multi-story basement and the basement floor has been completed, cast-in-place piles or steel pipe piles cannot be constructed. The foundation's pull-out resistance, torsion resistance and bearing capacity cannot be guaranteed, and it will occupy part of the space, affecting the use function of the basement that has been put into use. In this regard, the prior art also uses an integral reinforced concrete beam as the support of the tower crane, and supports it on the frame column structure of the basement through the support column at the bottom of the reinforced concrete beam. Although it shortens the construction time and can be reused, its rigid reinforced concrete beam structure not only has poor seismic performance, but also is directly supported on the frame column structure of the basement through the support column, resulting in poor connection reliability and weak anti-slip ability, which will further reduce its seismic performance. In addition, the prior art also uses a prefabricated assembled reinforced concrete structure as the foundation of the tower crane. Although it overcomes the above-mentioned problems of non-reusability, poor seismic performance and great construction difficulty, due to its split-assembled reinforced concrete structure, its connection with the basement frame column structure is connected through an anti-slip shaft, which not only has poor reliability, but also makes disassembly and assembly difficult. In addition, its reinforced concrete structure has poor toughness and is easily damaged during use and transportation, and the cost of use is also high. Therefore, in order to solve the problems existing in the above reinforced concrete beams, there are also existing technologies that press concrete blocks on the longitudinal beams, thereby pressing the longitudinal beams and the cross beams to form a tower crane foundation, and the tower crane foundation is set on the top plate of the basement through the bottom support. Although it is easy to disassemble and assemble, has low cost and is not easy to damage, its stacked structure has poor connection reliability, weak anti-slip ability, and poor overall seismic performance. Therefore, it is very necessary to develop an assembled weighted tower crane foundation structure that can solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled, ballast-type tower crane foundation structure which is convenient to assemble and disassemble, can be repeatedly used, has good seismic resistance, and is safe and reliable.

[0005] The present invention is implemented as follows: it includes a tower crane base, a cross steel beam, a load-bearing steel box beam, bolts, and a ballast block. The load-bearing steel box beam is a rectangular rigid structure. The bottom of the load-bearing steel box beam is fixedly connected to the basement frame column structure by bolts. The four ends of the cross steel beam are respectively placed on the load-bearing steel box beam, the tower crane base is placed on the load-bearing steel box beams on both sides of the cross steel beam, and the ballast blocks are respectively stacked on the tower crane base on both sides of the cross steel beam.

[0006] Beneficial effects of the present invention:

[0007] 1. The present invention uses a detachable ballast block with a variable ballast amount and an industrially processable stressed steel box beam as the load-bearing component of the tower crane foundation, and takes the basement frame column structure as the foundation, which not only saves the cost of building an additional tower crane pedestal, but also all the ballast blocks and stressed steel box beams can be calculated and determined in advance and prefabricated in the factory, and can be quickly disassembled and assembled after being transported to the site, so that it can be repeatedly used, and the disassembly, assembly and use of the overall structure will not affect the use function of the basement.

[0008] 2. The bottom of the load-bearing steel box girder of the present invention is fixedly connected to the basement frame column structure by bolts. Not only does the load-bearing steel box girder have good toughness and is not easily damaged during disassembly and use, but it also has strong torsion and shear resistance on the basis of meeting the strength requirements. The reliability of the bolt connection with the basement frame column structure is high, and the anti-slip performance of the connection can be effectively improved, and the overall seismic resistance is strong.

[0009] Therefore, the present invention is particularly suitable for the installation of various tower cranes when the basement floor has been completed, and has the characteristics of convenient disassembly and assembly, repeated turnover, good earthquake resistance, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0011] Figure 2 for Figure 1 Left view;

[0012] Figure 3 for Figure 1 A top view of

[0013] Figure 4 This is the second schematic diagram of the structure of the present invention;

[0014] Figure 5 This is a schematic diagram of the connection of the load-bearing corbel of the present invention;

[0015] Figure 6 This is one of the schematic diagrams of the conversion flange structure of the present invention;

[0016] Figure 7 It is a schematic diagram of the connection between the ballast block and the stressed steel box beam of the present invention;

[0017] In the figure: 1-tower crane base, 2-cross steel beam, 3-load-bearing steel box beam, 3A-main beam, 3B-secondary beam, 4-load-bearing corbel, 4A-support plate, 4B-corbel, 4C-side plate, 5-conversion flange, 5A-top plate, 5B-partition plate, 5C-bottom plate, 6-bolts, 7-ballast block, 8-fixed column, 9-lifting ear, 10-rib plate, 11-basement frame-column structure, 12-basement top plate, 13-concrete column pier. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] like Figures 1 to 5 The present invention includes a tower crane base 1, a cross steel beam 2, a stressed steel box beam 3, bolts 6, and a ballast block 7. The stressed steel box beam 3 is a rectangular rigid structure. The bottom of the stressed steel box beam 3 is fixedly connected to the basement frame column structure 11 by bolts 6. The four ends of the cross steel beam 2 are respectively placed on the stressed steel box beam 3. The tower crane base 1 is placed on the stressed steel box beam 3 on both sides of the cross steel beam 2. The ballast blocks 7 are respectively stacked on the tower crane base 1 on both sides of the cross steel beam 2.

[0020] The cross steel beam 2 is used to install the tower crane base frame.

[0021] like Figure 5 As shown, a stressed corbel 4 is arranged on the four end receiving surfaces of the cross steel beam 2 at the top of the stressed steel box beam 3, and the stressed corbel 4 includes a support plate 4A, a corbel 4B, and a side plate 4C. The support plate 4A is arranged in parallel to the top of the stressed steel box beam 3, and side plates 4C are symmetrically and vertically fixed on both sides of the bottom of the support plate 4A. The side plates 4C are fixedly connected to the support plate 4A through the corbel 4B. The stressed corbel 4 is clamped on the upper part of the stressed steel box beam 3 through the two side plates 4C at the bottom of the support plate 4A, and the four ends of the cross steel beam 2 are respectively placed on the support plate 4A at the top of the stressed steel box beam 3.

[0022] The load-bearing steel box girder 3 includes two parallel main beams 3A and two parallel secondary beams 3B fixedly arranged between the main beams 3A. Both ends of the main beam 3A are fixedly connected to the basement frame column structure 11 by bolts 6, and the load-bearing corbels 4 are fixedly arranged on the top of the secondary beams 3B.

[0023] The main beam 3A and the secondary beam 3B are rectangular beams and are fixedly provided with vertical ribs 10 inside. The ribs 10 are fixedly provided inside the main beam 3A and the secondary beam 3B along the axis and / or perpendicular to the axis.

[0024] The cross-sectional areas at any positions of the main beam 3A and / or the secondary beam 3B are the same.

[0025] Lifting lugs 9 are respectively and fixedly arranged on the upper parts of the main beams 3A on both sides of the stressed steel box girder 3.

[0026] As Figure 4 shown, a concrete pier 13 is arranged between the bottom of the secondary beam 3B and the basement top slab 12 below the support plate 4A.

[0027] A plurality of conversion flanges 5 are fixedly arranged at the bottom of the stressed steel box girder 3, and the conversion flanges 5 are fixedly connected with the basement frame column structure 11 through bolts 6.

[0028] As Figure 6 shown, the conversion flange 5 includes a top plate 5A, a partition plate 5B, and a bottom plate 5C. The top plate 5A and the bottom plate 5C are arranged in parallel and fixedly connected through the partition plate 5B to form a structure with an open side. A plurality of connection holes are arranged on the bottom plate 5C within the open side structure of the partition plate 5B. The conversion flange 5 is fixedly connected with the basement frame column structure 11 through the bolts 6 passing through the bottom plate 5C.

[0029] The partition plate 5B is in an "I" shape, a "plus" shape, a "worker" shape, a "well" shape, or a "rich" shape structure, and the upper and lower ends are respectively fixedly connected with the top plate 5A and the bottom plate 5C.

[0030] As Figure 7 shown, a fixed column 8 is fixedly arranged at the top end of the tower crane base 1. Fixed holes are arranged on the counterweight 7 corresponding to the fixed column 8, and the counterweight 7 is stacked on the tower crane base 1 through the fixed column 8.

[0031] The installation process of the present invention is as follows:

[0032] As Figures 1 to 7As shown, before installation, the weight of the ballast block 7 and the cross-sectional dimensions of the load-bearing steel box girder 3 are designed and verified according to the on-site construction drawings, and the bearing capacity of the basement frame column structure 11 is verified. Then, the ballast block 7 and the load-bearing steel box girder 3 are prefabricated in the factory according to the verified structure. During installation, first, the secondary beam of the basement frame column structure 11 is returned to the top, the top plate of the basement is cleaned, the high-strength bolts 6 are excavated and fixed on the secondary beam, or the preset high-strength bolts 6 are cleaned, and then the conversion flange 5 is welded or screwed at the bottom of the stressed steel box beam 3, and the conversion flange 5 is passed through the high-strength bolts 6 on the basement frame column structure 11 and tightened with nuts, and then the stressed brackets 4 are welded on the secondary beams 3B of the stressed steel box beam 3, and the four ends of the cross steel beam 2 are placed on the support plates 4A of the stressed brackets 4, and finally the two ends of the tower crane base 1 are directly placed or bolted on the support plates 4A of the stressed brackets 4, and the fixing holes of the prefabricated ballast blocks 7 are passed through the fixed columns 8 at the top of the tower crane base 1, and the installation of the tower crane foundation structure is completed. The disassembly process can be reversed.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An assembled ballast tower crane foundation structure, characterized in that The tower crane comprises a base (1), a cross steel beam (2), a stressed steel box beam (3), bolts (6), and a weight block (7); the stressed steel box beam (3) is a rectangular rigid structure; the bottom of the stressed steel box beam (3) is fixedly connected to a basement frame column structure (11) via bolts (6); the four ends of the cross steel beam (2) are respectively placed on the stressed steel box beam (3); the tower crane base (1) is placed on the stressed steel box beam (3) on both sides of the cross steel beam (2); and the weight blocks (7) are respectively stacked on the tower crane base (1) on both sides of the cross steel beam (2); The top of the stressed steel box girder (3) is provided with a stressed corbel (4) on the four end receiving surfaces of the cross steel beam (2), the stressed corbel (4) comprising a support plate (4A), a corbel (4B), and a side plate (4C), the support plate (4A) being arranged in parallel on the top of the stressed steel box girder (3), the bottom of the support plate (4A) being symmetrically and vertically fixed with side plates (4C), the side plates (4C) being fixedly connected to the support plate (4A) through the corbels (4B), the stressed corbel (4) being clamped on the upper part of the stressed steel box girder (3) through the two side plates (4C) at the bottom of the support plate (4A), the four ends of the cross steel beam (2) being respectively placed on the support plate (4A) at the top of the stressed steel box girder (3), and the two ends of the tower crane base (1) being directly placed on or bolted to the support plate (4A) of the stressed corbel (4); A plurality of conversion flanges (5) are fixedly arranged at the bottom of the load-bearing steel box beam (3), and the conversion flanges (5) are fixedly connected to the basement frame column structure (11) via bolts (6).

2. The assembled ballast tower crane foundation structure according to claim 1 is characterized in that The load-bearing steel box girder (3) comprises two parallel main beams (3A) and two parallel secondary beams (3B) fixedly arranged between the main beams (3A). Both ends of the main beam (3A) are fixedly connected to the basement frame column structure (11) by bolts (6). The load-bearing corbels (4) are respectively fixedly arranged on the tops of the secondary beams (3B).

3. The assembled ballast tower crane foundation structure according to claim 2 is characterized in that The main beam (3A) and the secondary beam (3B) are rectangular beams and have vertical ribs (10) fixedly arranged inside. The ribs (10) are fixedly arranged inside the main beam (3A) and the secondary beam (3B) along the axis and / or perpendicular to the axis.

4. The assembled ballast tower crane foundation structure according to claim 2 is characterized in that The cross-sectional areas of the main beam (3A) and / or the secondary beam (3B) at any position are the same.

5. The assembled ballast tower crane foundation structure according to claim 2 is characterized in that Lifting ears (9) are fixedly provided on the upper parts of the main beams (3A) on both sides of the load-bearing steel box beam (3).

6. The assembled ballast-type tower crane foundation structure according to claim 1 is characterized in that The conversion flange (5) comprises a top plate (5A), a partition plate (5B), and a bottom plate (5C); the top plate (5A) and the bottom plate (5C) are arranged in parallel and are fixedly connected via the partition plate (5B) to form a side-open structure; a plurality of connection holes are arranged on the bottom plate (5C) within the side-open structure of the partition plate (5B); the conversion flange (5) is fixedly connected to the basement frame column structure (11) via bolts (6) passing through the bottom plate (5C).

7. The assembled ballast-type tower crane foundation structure according to claim 6 is characterized in that The partition (5B) is in an "I"-shaped, "X"-shaped, "G"-shaped, "J"-shaped or "Feng"-shaped structure, and the upper and lower ends are respectively fixedly connected to the top plate (5A) and the bottom plate (5C).

8. The assembled ballast-type tower crane foundation structure according to any one of claims 1 to 7, characterized in that A fixed column (8) is fixedly provided at the top end of the tower crane base (1), and a fixing hole is provided on the ballast block (7) corresponding to the fixed column (8), and the ballast block (7) passes through the fixed column (8) and is stacked on the tower crane base (1).

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