Cross-shaped steel beam foundation of bridge pier tower crane

Abstract

The utility model relates to a cross-shaped steel beam foundation of a bridge pier tower crane, which belongs to the technical field of constructional engineering, in particular to the cross-shaped steel beam foundation of the bridge pier tower crane, and comprises a plurality of groups of reinforcing steel bars, heightening support legs are welded on the surfaces of each group of reinforcing steel bars and a first anchor plate, and a second anchor plate is welded at the top end of each heightening support leg. A plurality of sets of heightening stand columns are fixedly installed between each first anchor plate and the corresponding second anchor plate, a cross-shaped steel beam is jointly and fixedly installed on the surfaces of the multiple second anchor plates, and lifting lugs are fixedly installed on the surfaces of the four ends of the cross-shaped steel beam. According to the utility model, the effect of high-efficiency rapid construction under the limitation of river water is achieved, and the problems that the tower crane foundation section cannot be installed in a dry environment once the limitation of river water and the like occurs, the construction progress is hindered, the later maintenance cost is higher, the maintenance time is too long, the construction difficulty is high and the construction is not flexible are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tower crane installation, and in particular relates to a cross steel beam foundation for a pier tower base. Background Art

[0002] In bridge construction, vertical transportation usually uses tower cranes. Due to the restrictions of cross-domain rivers and surrounding environment, tower crane installation is difficult. The river water level is usually higher than the top surface of the bridge pier cap. The tower crane foundation requires a dry and stable environment to ensure the normal operation of the tower crane. In order to speed up bridge construction, the tower crane operation must be ensured as soon as possible. How to efficiently and quickly construct the tower crane foundation under the condition of river water restrictions has become a construction problem that needs to be solved urgently.

[0003] A Chinese patent with the announcement number CN214033776U has been searched, which discloses a tower crane foundation structure, including a cross-shaped support beam, a cap is provided in the middle of the cross-shaped support beam, and the cap is a conical structure with a large top and a small bottom. The lower end of the cap is used to cooperate with the support column of the existing frame structure. The utility model sets a cap in the middle of the cross-shaped support beam, and the cap is set on the support column of the existing frame structure. The cross-shaped support beam is supported on the top plate or frame beam of the existing structure; the support column in the frame of the existing structure is used as the bearing foundation of the tower crane, avoiding the safety of subway facilities and subway operations affected by the construction of additional pile foundations, and can also meet the needs of vertical transportation of building materials on the roof of the existing subway garage. The cap is a conical structure with a large top and a small bottom. While meeting the installation requirements of the tower crane, it reduces the force acting on the garage roof and can prevent the garage roof from being crushed.

[0004] Based on the above search combined with the existing technology, we found that;

[0005] Although the above patent can assemble the tower crane foundation structure, once encountering restrictive conditions such as river water, the tower crane foundation section cannot be installed in a dry environment, which hinders the construction progress. In addition, the subsequent maintenance cost is high and the maintenance time is too long. The construction is difficult and inflexible, so there are certain limitations. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a cross steel beam foundation of a pier tower crane, which can efficiently and quickly construct a tower crane foundation under river water restriction conditions. The device can speed up the progress of bridge construction, raise the steel legs for application, and is not affected by river water, thereby ensuring the stability of the tower crane foundation. The installation is flexible, convenient and efficient, and there is no need to invest in the construction cost and maintenance time of a reinforced concrete foundation, thereby reducing the difficulty of construction.

[0007] The technical solution for achieving the object of the present utility model is as follows: A cross-shaped steel beam foundation for a pier tower crane, comprising multiple groups of steel bars. For each group of the steel bars, elevation legs are welded on the surface of the first anchor plate. At the top end of each elevation leg, a second anchor plate is welded. Between each first anchor plate and the second anchor plate, multiple groups of elevation columns are fixedly installed. On the common surface of the multiple second anchor plates, a cross-shaped steel beam is fixedly installed. At the four end surfaces of the cross-shaped steel beam, lifting lugs are fixedly installed.

[0008] Preferably, multiple first steel plates are fixedly installed on the four end surfaces of the cross-shaped steel beam. Between the multiple first steel plates and the cross-shaped steel beam, multiple first support steels are fixedly installed.

[0009] Preferably, a second steel plate is arranged on the surface of the first steel plate. On the opposite sides of the first steel plate and the second steel plate, multiple elevation steel plates are fixedly installed. A threaded rod slidably penetrates between the first steel plate and the second steel plate. At both ends of the threaded rod, a pair of nuts are connected by threads. A protective sleeve is commonly sleeved outside the threaded rod and the nuts.

[0010] Preferably, a tower crane foundation section is fixedly installed on the surface of the second steel plate. Between the surface of the second steel plate and the bottom of the tower crane foundation section, multiple second support steels are fixedly installed.

[0011] Preferably, a pair of reinforcing square steels are welded between the cross parts of the cross-shaped steel beam. Between the cross-shaped steel beam and the second anchor plate, multiple reinforcing steels are fixedly installed.

[0012] Preferably, a pair of support rods are fixedly installed between one side of each elevation column and the bottom of the cross-shaped steel beam.

[0013] Compared with the prior art, the present utility model has the following remarkable advantages:

[0014] First: The present utility model uses the anchor plate and the elevation legs to raise the installation position, separating the river water, avoiding the problem of being unable to install the tower crane due to the river water. In addition, by installing the elevation columns and the reinforcing steels, the stability of the column body and the support strength are improved. In addition, by installing the reinforcing square steels between the cross-shaped steel beams, the torsional stiffness of the steel beam is improved. With the cooperation of the steel plates and the support steels on the surface of the cross-shaped steel beam, a firm base is provided for the installation of the tower crane foundation section, and there is no need to invest in the construction cost and maintenance time of the reinforced concrete foundation, reducing the construction difficulty.

[0015] Second: The present utility model commonly sleeves a protective sleeve on the threaded rod and the nuts, avoiding equipment rust and loosening caused by water, improving the durability of the equipment. Secondly, the support rods installed between the elevation columns and the cross-shaped steel beam improve the stability of the equipment.

[0016] The above-mentioned existing patents can assemble the tower crane foundation mechanism, but once restricted by situations such as river water, the tower crane foundation section cannot be installed in a dry environment. Moreover, the later maintenance cost is high, the maintenance time is long, the construction difficulty is great, and it is not flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further explained below in conjunction with the drawings and embodiments:

[0018] Figure 1 is a schematic diagram of the overall first perspective structure provided by the present utility model;

[0019] Figure 2 is a schematic diagram of the cross-shaped steel beam structure provided by the present utility model;

[0020] Figure 3 is provided by the present utility model Figure 2 The enlarged schematic diagram of part A in.

[0021] Description of the reference numerals in the drawings:

[0022] 1, steel bars; 2, tower crane foundation section; 3, elevated column; 4, lifting lug; 5, cross-shaped steel beam; 6, first steel plate; 7, second steel plate; 8, first support steel; 9, protective sleeve; 10, reinforcing steel; 11, reinforced square steel; 12, support rod; 13, elevated steel plate; 14, threaded rod; 15, nut; 16, elevated leg; 17, first anchor plate; 18, second anchor plate; 19, second support steel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0024] The present utility model provides a cross-shaped steel beam foundation for a pier tower crane by improvement. The technical solution of the present utility model is:

[0025] As Figures 1-3As shown in the figure, a cross-shaped steel beam foundation for a pier tower crane includes multiple groups of steel bars 1. At the top of each group of steel bars 1, a first anchor plate 17 is welded. It is characterized in that: on the surface of each first anchor plate 17, a heightening support leg 16 is welded. At the top of each heightening support leg 16, a second anchor plate 18 is welded. Between each first anchor plate 17 and the second anchor plate 18, multiple groups of heightening columns 3 are fixedly installed. On the surface of multiple second anchor plates 18, a cross-shaped steel beam 5 is fixedly installed together. At the four ends of the surface of the cross-shaped steel beam 5, lifting lugs 4 are fixedly installed. The heightening columns 3 separate the river water, avoiding the situation where the tower crane 2 cannot be installed due to the river water, so that the equipment is always in a dry state, which is convenient for the installation of the tower crane foundation section.

[0026] Furthermore, multiple first steel plates 6 are fixedly installed on the four ends of the surface of the cross-shaped steel beam 5. Between multiple first steel plates 6 and the cross-shaped steel beam 5, multiple first support steels 8 are fixedly installed, which improves the stability of the device and deepens its endurance.

[0027] Furthermore, a second steel plate 7 is arranged on the surface of the first steel plate 6. On the opposite sides of the first steel plate 6 and the second steel plate 7, multiple heightening steel plates 13 are fixedly installed. A threaded rod 14 slides through between each first steel plate 6 and the second steel plate 7. At both ends of the threaded rod 14, a pair of nuts 15 are connected by threads, making the two steel plates fit more closely, improving the stability of the equipment. A protective sleeve 9 is sleeved outside the threaded rod 14 and the nuts 15. The protective sleeve 9 avoids the erosion of water, prevents the equipment from rusting and being damaged, and reduces the later maintenance cost and maintenance time.

[0028] Furthermore, a tower crane foundation section 2 is fixedly installed on the surface of the second steel plate 7. Between the surface of the second steel plate 7 and the bottom of the tower crane foundation section 2, multiple second support steels 19 are fixedly installed together, fixing the equipment and enhancing the structural strength.

[0029] As a further solution of the present utility model, a pair of reinforcing square steels 11 are welded between the cross parts of the cross-shaped steel beam 5. Between the cross-shaped steel beam 5 and the second anchor plate 18, multiple reinforcing steels 10 are fixedly installed. The reinforcing square steels 11 improve the torsional stiffness of the steel beam, making the stress of the whole structure rich.

[0030] Furthermore, between one side of each heightening column 3 and the bottom of the cross-shaped steel beam 5, a pair of support rods 12 are fixedly installed, improving the load-bearing capacity of the equipment and facilitating the stability of the whole equipment.

[0031] The specific working method is as follows: First, weld the steel bar 1 at the bottom of the first anchor plate 17, embed the anchor plate with the steel bar 1, and weld four elevation legs 16. After welding, the cofferdam can be removed. Then, weld the second anchor plate 18 at the top of the four elevation legs 16, fixedly install the elevation column 3 between the two anchor plates. Secondly, install the cross-shaped steel beam 5 on the surface of the second anchor plate 18, install a pair of support rods 12 between the cross-shaped steel beam 5 and the elevation legs 16, and install the reinforcing square steel 11 between the cross-shaped steel beams 5 to improve the torsional stiffness of the steel beam. In addition, fixedly install the first steel plate 6 and the second steel plate 7 on the surface of the cross-shaped steel beam 5 and control their tightness with the threaded rod 14 and the nut 15. Support the whole steel plate with the first support steel 8. Finally, place the tower crane foundation section 2 on the second steel plate 7 and fix it through the second support steel 19 on the surface of the second steel plate 7. Check and verify in terms of both strength and stiffness. If both meet the requirements, ensure the normal operation of the tower crane and accelerate the bridge construction process.

[0032] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above technical means, but also include the technical solutions composed of equivalent replacements of the above technical features. The matters not covered in the present utility model belong to the common general knowledge of those skilled in the art.

Claims

1. A cross steel beam foundation for a pier tower crane, comprising a plurality of groups of steel bars (1), each group of the steel bars (1) having a first anchor plate (17) welded to the top, characterized in that: The surfaces of the first anchor plates (17) are welded with raised legs (16), the top of each raised leg (16) is welded with a second anchor plate (18), a plurality of groups of raised columns (3) are fixedly installed between each of the first anchor plates (17) and the second anchor plates (18), a cross steel beam (5) is fixedly installed on the surfaces of the plurality of second anchor plates (18), and lifting ears (4) are fixedly installed on the four end surfaces of the cross steel beam (5).

2. The cross steel beam foundation of a pier tower crane according to claim 1, characterized in that: A plurality of steel plates (6) are fixedly mounted on the four end surfaces of the cross steel beam (5), and a plurality of supporting steel plates (8) are fixedly mounted between the plurality of steel plates (6) and the cross steel beam (5).

3. The cross steel beam foundation of a pier tower crane according to claim 2, characterized in that: The surface of the steel plate 1 (6) is provided with a steel plate 2 (7), and a plurality of raised steel plates (13) are fixedly installed on opposite sides of the steel plate 1 (6) and the steel plate 2 (7), and a threaded rod (14) is slidably penetrated between each of the steel plates 1 (6) and the steel plate 2 (7), and a pair of nuts (15) are connected at both ends of the threaded rod (14) by threads, and a protective cover (9) is commonly provided on the outside of the threaded rod (14) and the nut (15).

4. The cross steel beam foundation of a pier tower crane according to claim 3, characterized in that: A tower crane foundation section (2) is fixedly installed on the surface of the second steel plate (7), and a plurality of supporting steels (19) are fixedly installed between the surface of the second steel plate (7) and the bottom of the tower crane foundation section (2).

5. The cross steel beam foundation of a pier tower crane according to claim 1, characterized in that: A pair of reinforcing square steels (11) are welded between the cross parts of the cross steel beam (5), and a plurality of reinforcing steels (10) are fixedly installed between the cross steel beam (5) and the second anchor plate (18).

6. The cross steel beam foundation of a pier tower crane according to claim 1, characterized in that: A pair of support rods (12) are fixedly installed between one side of each of the raised columns (3) and the bottom of the cross steel beam (5).

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