Reinforcing structure of tower crane

Abstract

The utility model provides a tower crane type crane reinforcing structure which comprises a foundation beam, a connecting part is arranged at the upper end of the foundation beam, the foundation beam and an original concrete tower crane foundation are connected and fixed together through the connecting part, and the connecting part comprises vertical I-shaped steel and a horizontal I-shaped steel top beam. The vertical I-shaped steel and the horizontal I-shaped steel top beam are fixedly connected together, a soil retaining plate is arranged between every two adjacent vertical I-shaped steel, and the lower side of each soil retaining plate is fixedly connected with the foundation beam. And the safety is ensured without dismounting the tower crane.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment processing mechanisms, in particular to a tower crane reinforcement structure. Background Art

[0002] Tower cranes are special equipment. After installation, they must be operated according to the operating conditions specified in the tower crane manual. According to current standards in my country, the distance between the tower crane foundation and the foundation pit should be no less than 1 / 3 of the pit depth. If the foundation pit is too close to the tower crane foundation, it will affect the stability of the tower crane and may cause the tower crane to tilt or collapse.

[0003] With the acceleration of my country's construction speed, some tower cranes have been installed and excavated. Due to structural changes in the project, it is necessary to excavate to the edge of the tower crane foundation, resulting in the tower crane foundation being exposed to the air on one side close to the foundation pit. If the tower crane foundation is removed and rebuilt, the loss of reinstallation will be great. Some engineering sites are even small, and the tower crane foundation can only be arranged at a distance from the edge of the foundation pit. Therefore, it is inevitable to design a tower crane foundation post-reinforcement treatment device and solve it through technical means. Utility Model Content

[0004] The utility model provides a tower crane reinforcement structure, aiming at improving the problem that due to structural changes in the project, it is necessary to excavate to the edge of the tower crane foundation, resulting in one side of the tower crane foundation close to the foundation pit being exposed to the air. If the tower crane foundation is dismantled and rebuilt, the loss after reinstallation is very large. In addition, some engineering sites are small and the tower crane foundation can only be arranged at a distance from the edge of the foundation pit.

[0005] In order to achieve the above purpose, the utility model provides a tower crane reinforcement structure, and the specific technical solution is as follows:

[0006] A tower crane reinforcement structure comprises a foundation beam, wherein a connecting portion is arranged at the upper end of the foundation beam, wherein the connecting portion connects and fixes the foundation beam and an original concrete tower crane foundation together, wherein the connecting portion comprises a vertical I-beam and a horizontal I-beam crown beam, wherein the vertical I-beam and the horizontal I-beam crown beam are fixedly connected together, and a retaining plate is arranged between two adjacent vertical I-beams, wherein the lower side of the retaining plate is fixedly connected to the foundation beam.

[0007] In one embodiment, the foundation beam comprises a plurality of foundation beam main bars, foundation beam stirrups are arranged between the plurality of foundation beam main bars, and the foundation beam stirrups bundle the foundation beam main bars together.

[0008] In one of the embodiments, the retaining board is provided with vertical reinforcement bars and horizontal reinforcement bars.

[0009] In one of the embodiments, an anchoring portion is provided between the vertical I-beam and the horizontal I-beam crown beam, and the vertical I-beam and the horizontal I-beam crown beam are fixedly connected together by the anchoring portion. The anchoring portion includes an anchoring steel bar, one end of which is abutted against the horizontal I-beam crown beam, and the other end is inserted into the original concrete tower crane foundation.

[0010] In one embodiment, the anchoring steel bar is L-shaped.

[0011] The beneficial effects of this embodiment are:

[0012] By setting up the foundation beam, the foundation beam is connected to the original concrete tower crane foundation through the connecting part. The foundation beam, the vertical I-beam of the connecting part, the horizontal I-beam crown beam, anchor steel bars and retaining plates form a stable support and force transmission system, which are reliably connected to the original concrete tower crane foundation and together form a new tower crane foundation structure. This structure is safe and stable and can meet the normal operation of the tower crane. It solves the problem that when the tower crane foundation is exposed to the air on one side close to the foundation pit, the tower crane does not need to be dismantled to ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure provided by the embodiment of the utility model Figure 1 ;

[0015] Figure 2 The overall structure diagram provided for the implementation of the utility model Figure 2 ;

[0016] Figure 3 for Figure 2 A magnified image of point A;

[0017] Figure 4 A schematic diagram of the installation position of the anchoring portion provided in an embodiment of the utility model;

[0018] Figure 5 A schematic diagram of the internal structure of a foundation beam provided in an embodiment of the utility model;

[0019] Figure 6 A schematic diagram of the internal structure of a retaining plate provided in an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 100, foundation beam; 110, main reinforcement of foundation beam; 120, stirrups of foundation beam;

[0022] 200, connection part; 210, vertical I-beam; 220, horizontal I-beam crown beam; 230, retaining plate; 231, vertical reinforcement of retaining plate; 232, horizontal reinforcement of retaining plate;

[0023] 300. Original concrete tower crane foundation;

[0024] 400. Anchoring portion; 410. Anchoring steel bar. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The technical solution provided by the embodiment of the utility model is introduced below in conjunction with the accompanying drawings.

[0027] See also Figure 1 , Figure 2 and Figure 3 An embodiment of the utility model provides a tower crane reinforcement structure, including a foundation beam 100, wherein the foundation beam 100 anchors a vertical I-beam 210 and a retaining plate vertical steel bar 231 in the retaining plate 230 in the foundation beam 100, and transmits the unbalanced force on the air side of the tower crane foundation to the foundation beam 100 through a force transmission system composed of the vertical I-beam 210 and the retaining plate 230, so as to ensure that the force of the entire tower crane reaches a balanced state; the lower end of the vertical I-beam 210 is anchored in the foundation beam 100, and the upper end is connected to the original concrete tower crane foundation 300 through a horizontal I-beam crown beam 220 and an anchor steel bar 410 to form an integral structure;

[0028] See also Figure 1 and Figure 2 As the main vertical force transmission structure of the system, the horizontal I-beam crown beam 220 connects the vertical I-beam 210, is fixed on the side of the original concrete tower crane foundation 300, and is firmly connected to the original concrete tower crane foundation 300 through the anchor steel bar 410, so as to transmit the unbalanced force on the side of the tower crane foundation facing the air to the vertical I-beam 210, and the anchor steel bar 410 is fixedly connected to the original concrete tower crane foundation 300 through the anchor steel glue, and the anchor steel bar 410 is connected to the horizontal I-beam crown beam 220 by welding;

[0029] See also Figure 1 and Figure 6 The vertical steel bars 231 of the retaining plate 230 are anchored in the foundation beam 100, and through the I-beam groove, they form an integral structure with the vertical I-beam 210, the horizontal I-beam crown beam 220, and the foundation beam 100, thereby enhancing the integrity of the entire reinforcement structure system and reinforcing the foundation soil under the original concrete tower crane foundation. The structural system fully considers the adverse working conditions of the original concrete tower crane foundation such as anti-overturning, bearing capacity, and settlement. It can solve the problem of not dismantling the tower crane when the tower crane foundation is exposed to the air near the foundation pit, thereby reducing losses and ensuring safety.

[0030] See also Figure 5 and Figure 6 , after leveling and compacting the building foundation, make the foundation beam 100. The length of the foundation beam 100 is 600mm longer than the original concrete tower crane foundation 300 on each side. The cross section and reinforcement refer to Figure 5 , the main reinforcement 110 of the foundation beam is of the same model, a total of 12 pieces, the stirrup 120 of the foundation beam adopts double stirrup @200mm, the concrete strength of the foundation beam 100 is C30, the bottom of the vertical I-beam 210 is anchored in the foundation beam 100, the anchorage length is 650mm, the I-beam is installed from 335mm on one side of the original concrete tower crane foundation 300, the vertical I-beam 210 is 1000mm apart, and the vertical I-beam 210 is close to the original concrete tower crane foundation 300 facing the air facade, maintaining the vertical It is straightly anchored in the foundation beam 100, with the upper end 300mm away from the top surface of the original concrete tower crane foundation 300, and the upper end is fixed by a horizontal I-beam crown beam 220, which is horizontally arranged with a center point of 135mm downward from the top of the vertical I-beam 210, and the horizontal I-beam crown beam 220 is connected to the vertical I-beam 210 by welding, and the horizontal weld is full welded, and one end of the horizontal I-beam crown beam 220 is 200mm out of the edge of the vertical I-beam 210;

[0031] See also Figure 2 , Figure 3 and Figure 4 The anchor steel bar 410 is anchored in the original concrete tower crane foundation 300, with an anchoring depth of 350 mm. The anchor steel bar 410 is L-shaped, and the anchor steel bar 410 is close to the horizontal I-beam crown beam 220. It is bent 90° at the edge of the horizontal I-beam crown beam 220. After intersecting and overlapping, the anchor steel bar 410 is double-sided welded to connect the horizontal I-beam crown beam 220 and the original concrete tower crane foundation 300 into an integral structure. Anchor steel bars 410 are set 150 mm on both sides of the intersection of each vertical I-beam 210 and the horizontal I-beam crown beam 220;

[0032] See also Figure 1 and Figure 2A retaining plate 230 is arranged between every two vertical I-beams 210. The lower end of the retaining plate 230 is connected to the foundation beam 100 as a whole, and the upper end is flush with the horizontal I-beam crown beam 220. The thickness of the retaining plate 230 is 180mm, and the concrete strength is C35. The vertical steel bars 231 of the retaining plate 230 are anchored in the foundation beam 100, and the upper end is bent 90° at 50mm below the upper mouth of the horizontal I-beam crown beam 220. The spacing of the vertical steel bars 231 of the retaining plate is @200mm, and the spacing of the horizontal steel bars 232 of the retaining plate is also @200mm. Both ends of the horizontal steel bars 232 of the retaining plate are anchored in the vertical I-beam 210.

[0033] In summary, the force transmission system composed of the foundation beam 100, the vertical I-beam 210, the horizontal I-beam crown beam 220, the anchoring part 400, and the retaining plate 230 transmits the bearing capacity and anti-overturning bearing capacity that the original tower crane and foundation should share to the building foundation, thereby achieving the purpose of safety and stability.

[0034] The specific construction process of the tower crane reinforcement structure includes: foundation cleaning → foundation beam reinforcement and formwork installation → vertical I-beam installation → horizontal crown beam installation → horizontal crown beam anchoring → retaining wall reinforcement installation → foundation beam concrete pouring → retaining wall formwork installation and concrete pouring. Through this complete construction process, it can ensure that the original tower crane foundation is reinforced without dismantling the tower crane. It can not only ensure the construction safety during the reinforcement process, but also ensure that all construction operations are implemented according to the design plan.

[0035] Among them, the foundation is cleaned, and the parts of the original concrete tower crane foundation that need to be reinforced are determined according to the site conditions. The earthwork on one side of the existing tower crane foundation is partially cleared in the original building foundation trench. During the reinforcement of the tower crane foundation, the tower crane must not be operated. This cleaning and construction process must fully consider the weather conditions. After the earthwork is cleaned, the reinforcement work must be completed as soon as possible. The excavated foundation must not be damaged by rain or snow. After cleaning the side, the base of the foundation beam 100 is cleaned and compacted.

[0036] After the foundation beam reinforcement and formwork are installed, the foundation and the original concrete tower crane foundation side are cleaned up, the foundation beam is installed first, the main reinforcement and stirrups are installed, and after the installation is completed, the formwork of the foundation beam 100 is supported;

[0037] The vertical I-beam 210 is installed. The lower end of the vertical I-beam 210 is fixed in the steel cage of the foundation beam 100, and the upper end is temporarily fixed to the side of the original concrete tower crane foundation 300 with auxiliary steel wire and expansion bolts. After all the vertical I-beams 210 are installed, the upper part is fixed and adjusted with temporary expansion bolts and steel wires, and the lower end is welded and reinforced with waste steel bars to ensure accurate position and ensure that the vertical I-beam 210 is close to the side of the exposed original concrete tower crane foundation 300 facing the air;

[0038] The horizontal I-beam crown beam 220 is installed. After the vertical I-beam 210 is checked and confirmed to be in the correct position, the horizontal I-beam crown beam 220 is installed. The horizontal I-beam crown beam 220 and the vertical I-beam 210 are welded and firmly connected.

[0039] The horizontal I-beam crown beam is anchored by drilling holes at the designed position on the side of the original concrete tower crane foundation 300, and the anchor steel bar 410 is anchored on the original concrete tower crane foundation 300 with anchor glue. The horizontal I-beam crown beam 220 is tightly wrapped by bending the anchor steel bar 410, and the bent part of the anchor steel bar 410 is overlapped and welded firmly. A group of anchor steel bars is provided on both sides of each vertical steel bar. The skeleton support system formed by welding the vertical I-beam 210 and the horizontal I-beam crown beam 220 is firmly connected to the original concrete tower crane foundation 300 through anchoring connection.

[0040] Retaining plate 230, after the vertical I-beam 210, the horizontal I-beam crown beam 220, and the anchoring part 400 are completed, the retaining plate 230 is installed between the two vertical I-beams 210, the thickness of the retaining plate 230 is the same as the width of the I-beam, the concrete strength is C35, the retaining plate vertical steel bars 231 are anchored in the foundation beam 100, the anchoring length is 500mm, the upper end of the retaining plate vertical steel bars 231 is bent 90° at 50mm below the upper mouth of the horizontal I-beam, the spacing of the retaining plate vertical steel bars 231 is @200mm, the spacing of the retaining plate horizontal steel bars 232 is also @200mm, the two sections of the retaining plate horizontal steel bars 232 are anchored in the vertical I-beam 210, and the retaining plate horizontal steel bars 232 and the retaining plate vertical steel bars 231 are tied firmly;

[0041] Foundation beam concrete pouring: after the 230 steel bars of the retaining plate are tied, adjust the foundation beam steel bars and reinforce the foundation beam formwork. After completion, pour the foundation beam concrete.

[0042] The retaining board formwork is installed, concrete is poured, and the outer side of the retaining board formwork is reinforced. After the reinforcement is completed, concrete is poured downward from the horizontal I-beam crown beam 220 and vibrated to make it dense.

[0043] To sum up, the specific construction steps of each part should be completed step by step. The construction operations of each project are simple and the construction difficulty is relatively low. From the perspective of reinforcement project safety, the above steps should fully consider the impact of weather and should be completed as soon as possible to ensure the safety of the reinforcement project construction process.

[0044] For this situation, after the tower crane is installed and the foundation pit is excavated, due to structural changes in the project, it is necessary to excavate to the edge of the tower crane foundation, resulting in the tower crane foundation being exposed to the air on one side close to the foundation pit. There are generally three ways to deal with this. The first is to dismantle the tower crane and then choose a location to rebuild the foundation and reinstall the tower crane. The original concrete tower crane foundation is no longer broken and is discarded; the second is to dismantle the tower crane and the original tower crane foundation, reposition the tower crane foundation at the original foundation position as required, and then reinstall the tower crane; the third is to build a gravity reinforced concrete retaining wall at the exposed part of the original concrete tower crane foundation without dismantling the tower crane and the tower crane foundation, to resist the overturning moment of the tower crane and the tower crane foundation. The cross-sectional size of the gravity reinforced concrete retaining wall in this method is relatively large, and the width is generally more than 1.5m. If the changed structure cannot be constructed normally, it cannot be used.

[0045] In this embodiment, the load and anti-overturning moment of the tower crane and the exposed side of the tower crane foundation can be transmitted to the building foundation by designing a force transmission system composed of a foundation beam 100, a vertical I-beam 210, a horizontal I-beam crown beam 220, an anchoring portion 400, and a retaining plate 230 on the building foundation. The safety and stability of the reinforcement system are ensured, and the distance between the exposed side of the tower crane foundation and the changed structure can be left to the maximum extent, so that it can be more effectively applied to extreme working conditions.

[0046] According to the design of the treatment device, a rigorous and feasible construction process flow is formulated. The process provides a detailed description of the technical points and safety precautions of each step. It is scientific, reasonable and economically feasible. Each process is a relatively simple operation process with simple construction, safety and reliability, ensuring the correct implementation of the design plan.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] 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" 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 a limitation on the present invention.

[0049] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tower crane reinforcement structure, comprising a foundation beam (100), characterized in that: A connecting portion (200) is provided at the upper end of the foundation beam (100), and the connecting portion (200) connects and fixes the foundation beam (100) and the original concrete tower crane foundation (300) together. The connecting portion (200) includes a vertical I-beam (210) and a horizontal I-beam crown beam (220), and the vertical I-beam (210) and the horizontal I-beam crown beam (220) are fixedly connected together. A retaining plate (230) is provided between two adjacent vertical I-beams (210), and the lower side of the retaining plate (230) is fixedly connected to the foundation beam (100).

2. A tower crane reinforcement structure according to claim 1, characterized in that: The foundation beam (100) comprises a plurality of foundation beam main bars (110), foundation beam stirrups (120) are arranged between the plurality of foundation beam main bars (110), and the foundation beam stirrups (120) bundle the foundation beam main bars (110) together.

3. A tower crane reinforcement structure according to claim 1, characterized in that: The retaining plate (230) is provided with retaining plate vertical steel bars (231) and retaining plate horizontal steel bars (232).

4. A tower crane reinforcement structure according to claim 1, characterized in that: An anchoring portion (400) is provided between the vertical I-beam (210) and the horizontal I-beam crown beam (220), and the vertical I-beam (210) and the horizontal I-beam crown beam (220) are fixedly connected together through the anchoring portion (400). The anchoring portion (400) comprises an anchoring steel bar (410), one end of the anchoring steel bar (410) is in contact with the horizontal I-beam crown beam (220), and the other end is inserted into the original concrete tower crane foundation (300).

5. A tower crane reinforcement structure according to claim 4, characterized in that: The anchoring steel bar (410) is arranged in an L shape.

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