Cross-sea navigation construction trestle lifting device

Abstract

The invention belongs to the technical field of engineering construction, and discloses a cross-sea navigation construction trestle lifting device which comprises a lower supporting pier, a lifting bridge span structure and a lifting system, and further comprises lower supporting pier steel pipe piles, upper supporting pier steel pipe piles and lower supporting pier steel pipe piles, and the lower supporting pier steel pipe piles are composed of six lower supporting pier steel pipe piles with the diameter of 630 mm in two rows; the number of the lower supporting pier steel pipe piles in each row is three, and the lower supporting pier steel pipe piles are connected with inter-pile parallel connectors and inclined struts in a welded mode through 20 # channel steel. By lifting and descending the whole construction trestle floor, the water area navigation and construction passing are met, and meanwhile the pressure and safety risks on social public transportation are reduced; construction of temporary roads is reduced; the construction period uncertainty caused by temporary shortcut land acquisition is avoided, the project construction period can be guaranteed, and the management cost is reduced; and damage to natural resources is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering construction, and specifically relates to a lifting device for a cross-sea navigable construction trestle. Background Art

[0002] Modern engineering construction faces challenges such as tight land resources and complex construction environments. Due to reasons such as long routes and wide distribution of projects, the construction access is affected by the on-site natural and social environments. Many projects in coastal areas are water bridge projects, and usually steel trestles are used for construction access and material transportation. If the project is located at both ends of the sea outlet channel, and the sea channel needs to meet the requirements of ship navigation without interruption, since the traditional steel trestle cannot meet the navigation requirements due to its height, it cannot connect the two banks, resulting in restrictions on construction access and material transportation.

[0003] Traditional solutions generally adopt the method of "taking a detour", using public transportation routes for transportation, or adopting the construction method of overall raising the height of the steel trestle to connect the two banks. However, involving public roads often brings greater social traffic pressure, because the transportation vehicles for engineering materials and equipment are generally large, with high road safety risks, and the transportation time will be greatly increased, which will affect the quality of materials such as concrete, thus increasing the uncertain factors of construction quality. Moreover, there are also problems that the access roads pass through densely populated villages and narrow roads, unable to meet the functions of the access roads, so it is necessary to rebuild the construction access roads. However, when rebuilding the construction access roads, land acquisition will involve basic farmland, ecological forest land and natural sea shorelines, and the land acquisition period is long, which has a great impact on the overall construction period; And adopting the construction method of overall raising the height of the steel trestle will greatly increase the construction cost of the trestle, and the connection with the subgrade section needs to be considered, affecting the layout of the site and the access roads. The above two solutions often cannot meet the requirements. Therefore, a lifting device for a cross-sea navigable construction trestle is proposed to solve the problems raised in the background art. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a lifting device for a cross-sea navigable construction trestle, which has the advantages of meeting both the ship navigation in the water area channel and the construction access of the project.

[0005] To achieve the above object, the present invention provides the following technical solution: A lifting device for a cross-sea navigable construction trestle, including a lower support pier, a lifting bridge span structure and a lifting system, and further including: Steel pipe piles of the lower support pier, the lower support pier is composed of 6 steel pipe piles of the lower support pier with a double row diameter of 630mm, and the number of steel pipe piles of the lower support pier in each row is 3. The steel pipe piles of the lower support pier are welded and connected with an inter-pile horizontal bracing and a diagonal brace through 20# channel steel; The first pile top cross beam is installed at the top of the lower support pier steel pipe piles, and a double 45C I-beam cross beam is placed on the top of the first pile top cross beam. The I-beam cross beam is provided with 36C I-beam distribution beams with a spacing of 50 cm. The lifting system consists of a gantry lifting frame, a winch, and a synchronous control system. The gantry lifting frame includes lifting gantry steel pipe piles and a second pile top cross beam.

[0006] Preferably, the bridge span structure consists of a single-span simply supported beam structure with a length of 30 m. The bridge span structure includes a Bailey girder main beam, which is composed of thirteen strengthened combined Bailey girders, and strengthened chord bars are arranged above and below the Bailey girders.

[0007] Preferably, the lifting gantry steel pipe piles are arranged at both ends of the bridge span structure. The single-side gantry of the lifting gantry steel pipe piles consists of a double-row gantry composed of 8 steel pipe piles with a diameter of 630 mm. Several of the pile-to-pile horizontal bracings and diagonal braces are welded to the lifting gantry steel pipe piles through 20# channel steel.

[0008] Preferably, the I-beam cross beam includes 36C I-beam distribution beams with a spacing of 50 cm. 20# threaded steel U-shaped buckles are installed at the top of the Bailey girder main beam. The distribution beams in the I-beam cross beam and the Bailey girders inside the Bailey girder main beam are locked and connected by 20# threaded steel U-shaped buckles.

[0009] Preferably, a double 45C lower lifting cross beam is provided at each lower part of both ends of the bridge span structure. The winch includes a supporting pulley block and a steel wire rope. The pulley block and the steel wire rope are respectively connected to the four end points of the lower lifting cross beam.

[0010] Preferably, a second pile top cross beam is provided at the top of the lifting gantry steel pipe piles. The second pile top cross beam contains a double 45C I-beam cross beam, and a winch with a 45C I-beam base is provided at the top of the second pile top cross beam.

[0011] Preferably, the synchronous control system includes a synchronous control integrated electrical box, a signal transmitting and receiving box, and a remote control. Two winches are provided at each end of the single-side gantry of the lifting gantry steel pipe piles. The number of winches is four. The synchronous control system is used to control the four winches to perform synchronous lifting and lowering.

[0012] Preferably, the I-beam cross beam is located above the bridge span structure. An assembled steel bridge deck is installed on the upper part of the I-beam cross beam. The width of the bridge deck of the assembled steel bridge deck is six meters. The assembled steel bridge deck is welded to the 36C I-beam distribution beams.

[0013] Preferably, guardrail columns are provided on the upper part of the prefabricated steel bridge deck, and the columns are made of 8# channel steel. The crossbars of the guardrail are made of steel pipes with a diameter of φ48×2.5mm, and a 18cm high kickboard is provided at the lower part thereof.

[0014] Preferably, four anti-collision piers are provided at the front end of the gantry lifting frame. The anti-collision piers are composed of three anti-collision pier steel pipe piles with a diameter of 630mm. A plurality of horizontal and diagonal braces between the piles are welded to the anti-collision pier steel pipe piles through 20# channel steel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By lifting and lowering the entire construction trestle bridge deck, the present invention reduces the pressure and safety risks to social public transportation while meeting waterway navigation and construction passage; reduces the construction of temporary roads; avoids the uncertainty of the construction period caused by the land acquisition of temporary access roads, can ensure the project construction period, reduce management costs; and avoids the damage to natural resources.

[0016] 2. By separately arranging construction work areas on both sides of the waterway or adopting the method of overall increasing the height of the trestle to connect both banks, the present invention saves construction costs, and can significantly improve the overall construction efficiency of the project. At the same time, through the cooperation between the bridge span structure, the lifting gantry steel pipe piles and the winch and other structures, the navigation span and the lifting height can be appropriately increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall elevation structure of the present invention; Figure 2 is a schematic diagram of the overall side structure of the present invention; Figure 3 is Figure 1 an enlarged view of part A in

[0018] In the figure: 1. Lower support pier steel pipe pile; 2. Horizontal and diagonal braces between piles; 3. First pile top cross beam; 4. Bridge span structure; 5. Lifting gantry steel pipe pile; 6. Second pile top cross beam; 7. Winch; 8. Lower lifting cross beam; 9. Pulley block; 10. Steel wire rope; 11. Anti-collision pier steel pipe pile; 12. Bailey main beam; 13. I-beam cross beam; 14. 20# threaded steel U-shaped buckle; 15. Prefabricated steel bridge deck. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 3 shown, the present invention provides a lifting device for a cross-sea navigation construction trestle, which includes a lower support pier, a lifting bridge span structure 4 and a lifting system, and further includes: Lower support pier steel pipe piles 1. The lower support pier is composed of 6 lower support pier steel pipe piles 1 with a double row diameter of 630 mm, and the number of lower support pier steel pipe piles 1 in each row is 3. The lower support pier steel pipe piles 1 are welded and connected with inter-pile horizontal bracings and diagonal braces 2 through 20# channel steel; The first pile top cross beam 3. The first pile top cross beam 3 is installed on the top of the lower support pier steel pipe piles 1, and a double-joined 45C I-beam cross beam 13 is placed on the top of the first pile top cross beam 3. The I-beam cross beam 13 is provided with 36C I-beam distribution beams with a spacing of 50 cm; The lifting system is composed of a gantry lifting frame, a winch 7 and a synchronous control system. The gantry lifting frame includes a lifting gantry steel pipe pile 5 and a second pile top cross beam 6.

[0021] Adopting the above scheme: By the overall lifting and lowering of the construction trestle bridge deck, while meeting the water area navigation and construction passage, the pressure and safety risks to social public transportation are reduced; the construction of temporary roads is reduced; the uncertainty of the project duration caused by the land acquisition of temporary access roads is avoided, the project duration can be guaranteed, and the management cost is reduced; the damage to natural resources is avoided.

[0022] As Figures 1 to 3 shown, the bridge span structure 4 is composed of a single-span simply supported beam structure with a length of 30 m. The bridge span structure 4 includes a Bailey girder main beam 12. The Bailey girder main beam 12 is composed of thirteen strengthened combined Bailey girders, and both the upper and lower parts of the Bailey girders are provided with strengthened chord bars. The lifting gantry steel pipe piles 5 are arranged at both ends of the bridge span structure 4. The single-sided gantry of the lifting gantry steel pipe pile 5 is composed of 8 steel pipe piles with a diameter of 630 mm to form a double-row gantry. A number of inter-pile horizontal bracings and diagonal braces 2 are welded and connected with the lifting gantry steel pipe piles 5 through 20# channel steel. The I-beam cross beam 13 includes 36C I-beam distribution beams with a spacing of 50 cm. At the top of the Bailey girder main beam 12, 20# threaded steel U-shaped buckles 14 are installed. The distribution beams in the I-beam cross beam 13 and the Bailey girders inside the Bailey girder main beam 12 are locked and connected by 20# threaded steel U-shaped buckles 14. At the lower part of both ends of the bridge span structure 4, a double-joined 45C lower lifting cross beam 8 is provided respectively. The winch 7 includes a matching pulley block 9 and a steel wire rope 10. The pulley block 9 and the steel wire rope 10 are respectively connected to the four end points of the lower lifting cross beam 8.

[0023] Adopting the above scheme: Through the design of the pulley block 9 and the steel wire rope 10, its function is that the pulley block 9 has the function of saving force, and by reasonably designing the structure of the pulley block 9, the winch 7 can use a smaller force to lift the heavier bridge span structure 4; Meanwhile, four hoists 7 are connected to the lower lifting crossbeam 8 through their respective matching pulley blocks 9 and wire ropes 10, so as to precisely control the movement of each hoist 7 by using a synchronous control system, and further ensure that the bridge span structure 4 remains horizontal and stable during the lifting process. The cooperation of the pulley block 9 and the wire rope 10 can evenly transmit the power of the hoist 7 to each part of the bridge span structure 4, thus avoiding the situation of uneven local stress, which may cause the bridge span structure 4 to tilt or be damaged.

[0024] As Figures 1 to 3 shown, at the top of the lifting gantry steel pipe pile 5, there is a second pile top crossbeam 6. The second pile top crossbeam 6 contains a double-spliced 45C I-beam crossbeam 13. At the top of the second pile top crossbeam 6, there is a hoist 7 with a 45C I-beam base. The synchronous control system includes a synchronous control integrated electric box, a signal transmitting and receiving box, and a remote control. At both ends of the single-side gantry of the lifting gantry steel pipe pile 5, there are two hoists 7 each, and the number of hoists 7 is four. The synchronous control system is used to control the four hoists 7 to perform synchronous lifting and lowering.

[0025] Adopting the above scheme: By separately setting up construction work areas on both sides of the waterway, or by adopting the method of overall increasing the height of the trestle to connect both banks, the construction cost is saved, and the overall construction efficiency of the project is significantly improved. By using the synchronous control system to control the four hoists 7 to perform synchronous lifting and lowering, the lower lifting crossbeam 8 is driven by the hoists 7 to perform synchronous lifting, and thus the overall lifting of the bridge span structure 4 can be realized, so as to meet the requirements of appropriately increasing the navigation span and lifting height.

[0026] As Figures 1 to 3 shown, the I-beam crossbeam 13 is located above the bridge span structure 4. An assembled steel bridge deck 15 is installed on the upper part of the I-beam crossbeam 13. The width of the deck of the assembled steel bridge deck 15 is six meters. The assembled steel bridge deck 15 is welded and connected to the 36C I-beam distribution beam. There are guardrail columns on the upper part of the assembled steel bridge deck 15, and the columns are made of 8# channel steel. The crossbars of the guardrail are made of φ48×2.5mm steel pipes, and there is a 18cm high kickboard at the lower part. There are four anti-collision piers at the front end of the gantry lifting frame. Each anti-collision pier consists of three anti-collision pier steel pipe piles 11 with a diameter of 630mm. A number of inter-pile horizontal bracings and diagonal braces 2 are welded and connected to the anti-collision pier steel pipe piles 11 through 20# channel steel.

[0027] Adopting the above scheme: Through the design of the assembled steel bridge deck 15, its function is that the assembled steel bridge deck 15 is prefabricated in the factory and then transported to the site for installation. Compared with traditional methods such as on-site casting of concrete bridge decks, the on-site construction time and workload are greatly reduced, and the construction efficiency is improved. Moreover, the assembled steel bridge deck 15 is especially suitable for environments with complex construction conditions and limited construction time such as cross-sea areas.

[0028] Working principle and usage process of the present invention: First of all, this device can lift and lower the entire bridge deck of the construction trestle, and this function has many remarkable advantages in practical applications; On the one hand, it can flexibly meet the dual needs of water area navigation and construction passage. For example, when there is a need for ship navigation, the trestle bridge deck can be lifted to ensure the smoothness of the waterway. During construction, the deck can be lowered to facilitate the passage of construction personnel and vehicles. At the same time, this design greatly reduces the pressure and safety risks on social public transportation, and avoids traffic congestion and safety accidents that may be caused by the mutual interference between the construction trestle and public transportation; On the other hand, compared with traditional construction methods, this device reduces the construction work of temporary roads. Traditional construction often requires the construction of a large number of temporary roads to meet the construction passage needs. This device cleverly avoids this link through the reasonable lifting and lowering of the trestle bridge deck, thereby saving a large amount of manpower, material resources and financial resources, and at the same time can avoid the uncertainty of the construction period caused by the land acquisition of temporary access roads.

[0029] Finally, compared with the conventional construction trestles in navigable waters that are separately set on both banks, this device saves construction costs by setting construction work areas on both sides of the waterway or by using the method of overall raising the height of the trestle to connect the two banks, and can significantly improve the overall construction efficiency of the project.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for a cross-sea navigation construction trestle, comprising a lower supporting pier, a lifting bridge span structure (4) and a lifting system, characterized in that: Also included are: Lower supporting pier steel pipe piles (1), the lower supporting piers are composed of two rows of six lower supporting pier steel pipe piles (1) with a diameter of 630 mm, and each row of the lower supporting pier steel pipe piles (1) has three lower supporting pier steel pipe piles (1), the lower supporting pier steel pipe piles (1) are connected to the piles by welding with 20# channel steel and with a pile-to-pile flat joint and a diagonal brace (2); A first pile top cross beam (3), the first pile top cross beam (3) being installed on the top of the lower supporting pier steel pipe pile (1), and a double 45C I-beam cross beam (13) being placed on the top of the first pile top cross beam (3), the I-beam cross beam (13) being provided with 36C I-beam distribution beams with a spacing of 50 cm; The lifting system is composed of a gantry lifting frame, a winch (7) and a synchronous control system, wherein the gantry lifting frame comprises a lifting gantry steel pipe pile (5) and a second pile top crossbeam (6).

2. The cross-sea navigation construction trestle lifting device according to claim 1 is characterized in that: The bridge span structure (4) is composed of a single-span simply supported beam structure with a length of 30 m. The bridge span structure (4) contains a Bailey plate main beam (12). The Bailey plate main beam (12) is composed of thirteen reinforced combined Bailey plates, and reinforced chords are arranged above and below the Bailey plates.

3. The cross-sea navigation construction trestle lifting device according to claim 1 is characterized in that: The lifting gantry steel pipe piles (5) are arranged at both ends of the bridge span structure (4); a single-side gantry of the lifting gantry steel pipe piles (5) is composed of 8 steel pipe piles with a diameter of 630 mm forming a double-row gantry; a plurality of the inter-pile parallel connections and diagonal braces (2) are welded to the lifting gantry steel pipe piles (5) via 20# channel steel.

4. The cross-sea navigation construction trestle lifting device according to claim 2 is characterized in that: The I-beam cross beam (13) includes a 36C I-beam distribution beam with a spacing of 50 cm. A 20# threaded steel U-shaped buckle (14) is installed at the top of the Bailey plate main beam (12). The distribution beam in the I-beam cross beam (13) and the Bailey plate inside the Bailey plate main beam (12) are locked and connected by the 20# threaded steel U-shaped buckle (14).

5. The cross-sea navigation construction trestle lifting device according to claim 1 is characterized in that: A double-jointed 45C lower lifting beam (8) is provided at the lower part of each end of the bridge span structure (4), and the hoist (7) contains a matching pulley block (9) and a steel wire rope (10), and the pulley block (9) and the steel wire rope (10) are respectively connected to the four end points of the lower lifting beam (8).

6. The cross-sea navigation construction trestle lifting device according to claim 1 is characterized by: A second pile top cross beam (6) is arranged at the top end of the lifting gantry steel pipe pile (5), the second pile top cross beam (6) contains a double 45C I-beam cross beam (13), and a winch (7) with a 45C I-beam base is arranged at the top end of the second pile top cross beam (6).

7. The cross-sea navigation construction trestle lifting device according to claim 6 is characterized by: The synchronous control system includes a synchronous control integrated electric box, a signal transmitting and receiving box and a remote controller; Two winches (7) are respectively arranged at both ends of a single-side gantry of the lifting gantry steel pipe pile (5), the number of the winches (7) is four, and the synchronous control system is used to control the four winches (7) to perform synchronous lifting and lowering.

8. The cross-sea navigation construction trestle lifting device according to claim 4 is characterized in that: The I-beam cross beam (13) is located above the bridge span structure (4), and an assembled steel bridge deck (15) is installed on the upper part of the I-beam cross beam (13). The width of the bridge deck of the assembled steel bridge deck (15) is six meters, and the assembled steel bridge deck (15) is welded to a 36C I-beam distribution beam.

9. The cross-sea navigation construction trestle lifting device according to claim 8 is characterized in that: The upper part of the assembled steel bridge deck (15) is provided with a guardrail column, and the column is made of 8# channel steel. The crossbar of the guardrail is made of φ48×2.5mm steel pipe, and the lower part thereof is provided with an 18cm high skirting board.

10. The cross-sea navigation construction trestle lifting device according to claim 1 is characterized in that: Four anti-collision piers are arranged at the front end of the gantry lifting frame. The anti-collision piers are composed of three anti-collision pier steel pipe piles (11) with a diameter of 630 mm. A plurality of the inter-pile parallel joints and diagonal braces (2) are welded to the anti-collision pier steel pipe piles (11) through 20# channel steel.

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