Movable mounting device for prefabricated bridge deck slab of steel-concrete composite bridge and construction method of movable mounting device

Abstract

The invention discloses a movable mounting device for a prefabricated bridge deck slab of a steel-concrete composite bridge and a construction method of the movable mounting device. The movable mounting device comprises two parallel I-shaped bridge deck longitudinal beams, a hollow square steel tube cross beam formed by splicing two hollow square steel tubes with different diameters is arranged between the two ends of the bridge floor longitudinal beam through a group of supporting and butting components; two track beams which are arranged in parallel in the longitudinal direction are arranged between the top surfaces of the two hollow square steel tube cross beams, and the two ends of the track beams are fixedly arranged on the top surfaces of the corresponding hollow square steel tube cross beams through vertical H-shaped steel columns respectively; at least two bearing cross beams which are arranged in parallel in the transverse direction are arranged on the track beams, and the two ends of the bearing cross beams are arranged on the corresponding track beams in a back-and-forth sliding mode through traction carrying trolleys respectively; and at least two electric hoists which can transversely slide left and right and are used for hoisting the bridge deck slab are arranged on the lower flange of the bearing cross beam. The technical scheme can be used for quickly hoisting the prefabricated bridge deck slab, and is convenient to assemble and wide in application scene.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a mobile installation device for a prefabricated bridge deck of a steel-concrete composite bridge and a construction method thereof. Background Art

[0002] A steel-concrete composite bridge is an integral structure formed by combining steel beams and concrete bridge decks in a certain way. This structure utilizes the advantages of both steel and concrete to achieve better load-bearing performance and service life. With the continuous advancement of industrialized bridge construction technology, in order to improve construction efficiency, accelerate project progress, and reduce the negative impact of construction on the surrounding environment, especially urban traffic, precast concrete bridge decks are widely used. Precast concrete bridge decks are made in advance in factories or dedicated prefabrication sites. Through standardized and modular production, their quality can be guaranteed while shortening on-site construction time and quickly restoring traffic.

[0003] However, such prefabricated bridge panels generally require the use of large lifting equipment during construction and installation. These equipment are operated on the ground to lift the prefabricated bridge panels to the designated location of the bridge for installation. Although this lifting method can effectively improve construction efficiency, it also has some problems. First, large lifting equipment will occupy a certain amount of urban road space during construction. For cities with busy traffic, this may have a certain impact on the surrounding traffic flow during construction, especially in narrow or traffic-intensive areas, which may cause traffic congestion. Secondly, the lifting operation itself has certain safety risks, because prefabricated bridge panels are usually heavy. Once an accident occurs during the lifting process, such as lifting equipment failure, operating errors or strong winds and other uncontrollable factors, it may lead to major safety accidents and endanger the safety of construction workers and passers-by.

[0004] Therefore, the use of mobile installation equipment for prefabricated bridge decks of steel-concrete composite bridges can minimize the occupation of construction sites and reduce interference with urban traffic. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a mobile installation device for prefabricated bridge decks of a steel-concrete composite bridge and a construction method thereof, which are used for rapid lifting of prefabricated bridge decks, are easy to assemble, and are applicable to a wide range of scenarios.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions.

[0007] In a first aspect, the present invention provides a mobile installation device for a prefabricated bridge deck of a steel-concrete composite bridge, comprising: Two parallel I-shaped bridge deck longitudinal beams; A hollow square steel tube cross beam formed by plugging two hollow square steel tubes of different diameters is arranged between the two ends of the bridge deck longitudinal beam through a set of supporting docking components; Two track beams arranged in parallel along the longitudinal direction are arranged between the top surfaces of the two hollow square steel tube cross beams, and both ends of the track beams are respectively fixed to the top surfaces of the corresponding hollow square steel tube cross beams through a vertical H-shaped steel column; At least two load-bearing beams are arranged in parallel in the transverse direction on the track beam, and both ends of the load-bearing beams are respectively arranged on the corresponding track beams so as to be slidable back and forth by a traction and transportation trolley; At least two electric hoists which can slide horizontally left and right and are used for lifting the bridge deck are arranged on the lower flange of the load-bearing crossbeam.

[0008] Further, the support docking assembly includes a vacuum suction cup arranged on the side end surface of the hollow square steel tube cross beam and an adjustment support arranged on the bottom end surface, the vacuum suction cup is connected to the internal threaded long nut at the end of the hollow square steel tube cross beam through the end bolt rod, the adjustment support is welded to the bottom of the hollow square steel tube cross beam, and the two ends of the hollow square steel tube cross beam are respectively installed on the I-shaped side surface and bottom surface of the bridge deck longitudinal beam through the vacuum suction cup and the adjustment support; A number of bolt holes are provided on the upper and lower tube walls of the connecting parts of the two hollow square steel tubes, and bolt pins are inserted through alignment to limit the free expansion and contraction of the hollow steel tube beam. The adjustment support is composed of two round steel tubes of different diameters nested with each other. Circular holes are provided on the nested steel tube walls of the round steel tubes, and steel pins can be inserted into the holes to limit expansion and contraction.

[0009] Furthermore, limited angle steels are respectively provided at both ends of the track groove of the track beam and at both ends of the lower flange of the load-bearing crossbeam.

[0010] Furthermore, a square steel pad for support is welded to the bottom end of the lower round steel tube and / or the upper round steel tube of the adjustment support.

[0011] In a second aspect, the present invention provides a construction method for the mobile installation device for the prefabricated bridge deck of a steel-concrete composite bridge as described in the first aspect, comprising the following method steps: Step S1: Check the construction site to ensure that it meets safety requirements; prepare the required materials and equipment, including H-shaped steel, vacuum suction cups, angle steel, bolts, electric hoists, traction equipment, adjustable supports, track beams, and transport trolleys; Step S2: screwing the vacuum suction cup into the nuts at both ends of the hollow square steel tube cross beam through the bolt rod, and welding the adjustable support to the bottom of the hollow square steel tube cross beam, and adjusting the adjustable support to a suitable height so that the vacuum suction cup can be adsorbed on the center position of the web of the bridge deck longitudinal beam; Step S3: placing one end of the hollow square steel tube cross beam on the lower flange of the bridge deck longitudinal beam, adsorbing the vacuum suction cup on the web of the bridge deck longitudinal beam, adjusting the appropriate length of the hollow square steel tube cross beam according to the transverse spacing between the bridge deck longitudinal beams while ensuring that the bolt holes on the upper and lower walls of the large and small diameter square steel tubes are aligned, inserting the screw into the bolt hole, and screwing the nut to fix it, thereby limiting its free expansion and contraction, and placing the other end of the hollow square steel tube cross beam on the lower flange of another bridge deck longitudinal beam; Step S4: fixing the H-shaped steel column to both ends of the hollow square steel tube beam by bolts and angle steels, and welding the track beam to the top of the H-shaped steel column; Step S5: installing the transport trolley on the track beam and welding an H-shaped steel load-bearing beam on the transport trolley; Step S6: installing an electric hoist on the lower flange of the H-shaped steel load-bearing beam; Step S7: Check the construction quality to ensure that all parts of the mobile installation equipment for the prefabricated bridge deck of the steel-concrete composite bridge are firmly installed, tightly connected, and meet the design requirements; Step S8: transport the bridge panel to the feeding area, support the load-bearing beam above the transport trolley through the traction equipment to move it above the feeding area, adjust the position of the electric hoist and lower the hook to the appropriate position to lift the bridge panel, support the load-bearing beam of the transport trolley to move to the bridge panel installation area, lower the bridge panel to the appropriate position to install the bridge panel, and move the transport trolley and the beam it supports back to the feeding area to start the lifting of the next panel.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention provides a mobile installation device for prefabricated bridge decks of steel-concrete composite bridges and a construction method thereof. The structure installs the lifting equipment on the longitudinal beams of the bridge deck through vacuum suction cups and adjustable supports, thereby reducing the site occupied by large lifting equipment and reducing the interference with urban traffic to a certain extent.

[0013] The mobile installation equipment and construction method of the prefabricated bridge deck of the steel-concrete composite bridge can realize the lifting and transportation of the bridge deck in both vertical and horizontal directions. Compared with the traditional large-scale mechanical lifting, it avoids the large-scale rotation movement of the cantilever of the large machinery in the horizontal direction, and reduces the safety risks in the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of a mobile installation device for a prefabricated bridge deck of a steel-concrete composite bridge of the present invention.

[0015] Figure 2 It is a front view of a mobile installation device for prefabricated bridge decks of a steel-concrete composite bridge according to the present invention.

[0016] Figure 3 The hollow square steel tube cross beam of the present invention.

[0017] Figure 4 The utility model relates to a vacuum suction cup with a long bolt rod of the present invention.

[0018] Figure 5 The adjustable support of the present invention.

[0019] Figure 6 The invention relates to a traveling track beam and a transport trolley.

[0020] Figure 7 It is the transverse load-bearing beam of the present invention.

[0021] In the figure: 1. Bridge deck longitudinal beam; 2. Support docking assembly; 3. Hollow square steel tube cross beam; 4. Track beam; 5. Vertical H-shaped steel column; 6. Load-bearing cross beam; 7. Towing and transporting trolley; 8. Electric hoist; 9. Vacuum suction cup; 10. Adjustment support; 11. Bolt rod; 12. Internally threaded long nut; 13. Bolt hole; 14. Bolt pin; 15. Round steel pipe; 16. Circular hole; 17. Steel pin; 18. Limit angle steel; 19. Steel pad; 20. End plate; 21. Threaded hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected 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 by specific circumstances.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a mobile installation device for prefabricated bridge decks of a steel-concrete composite bridge, comprising: Two parallel I-shaped bridge deck longitudinal beams 1; A hollow square steel tube cross beam 3 formed by plugging two hollow square steel tubes of different diameters is arranged between the two ends of the bridge deck longitudinal beam 1 through a set of supporting docking components 2; Two track beams 4 are arranged in parallel along the longitudinal direction between the top surfaces of the two hollow square steel tube cross beams 3. The two ends of the track beam 4 are fixed to the top surface of the corresponding hollow square steel tube cross beam 3 through a vertical H-shaped steel column 5. The bottom of the vertical H-shaped steel column 5 is connected to the top surface of the steel tube beam by bolts. At least two load-bearing beams 6 are arranged in parallel in the transverse direction on the track beam 4, and both ends of the load-bearing beams 6 are respectively arranged on the corresponding track beam 4 so as to be slidable back and forth by a traction and transportation trolley 7; At least two electric hoists 8 that can slide horizontally left and right and are used to hoist the bridge deck are arranged on the lower flange of the load-bearing crossbeam 6.

[0026] The supporting docking assembly 2 includes a vacuum suction cup 9 arranged on the side end surface of the hollow square steel tube cross beam 3 and an adjustment support 10 arranged on the bottom end surface.

[0027] like Figure 3 and Figure 4 As shown, the vacuum suction cup 9 is connected to the internal thread nut or the internal thread long nut 12 on the end plate 20 at the end of the hollow square steel tube cross beam 3 through the end bolt rod 11 or the long bolt rod 11, the adjustment support 10 is welded to the bottom of the hollow square steel tube cross beam 3, and the two ends of the hollow square steel tube cross beam 3 are respectively installed on the I-shaped side and bottom surface of the bridge deck longitudinal beam 1 through the vacuum suction cup 9 and the adjustment support 10; like Figure 3 As shown, a plurality of bolt holes 13 are provided on the upper and lower tube walls of the splicing portion of the two hollow square steel tubes, and bolt pins 14 are inserted through alignment to limit the free expansion and contraction of the hollow steel tube beam.

[0028] like Figure 5As shown, the adjusting support 10 is composed of two circular steel tubes 15 of different diameters nested with each other, and circular holes 16 are provided on the nested steel tube walls of the circular steel tubes 15, and steel pins 17 can be inserted into the holes to limit the expansion and contraction. A square steel pad 19 for support is welded to the bottom end of the lower circular steel tube 15 and / or the upper circular steel tube 15 of the adjusting support 10.

[0029] like Figure 6 and Figure 7 As shown, limited angle steels 18 are respectively provided at both ends of the track groove of the track beam 4 and at both ends of the lower flange of the load-bearing cross beam 6 .

[0030] In this embodiment, the lower end of the vertical H-shaped steel column 5 is fixedly arranged on the top surface of the corresponding hollow square steel tube cross beam 3 through an L-shaped angle steel sheet, wherein the L-shaped angle steel sheet is provided with a plurality of threaded holes, and the top surface of the hollow square steel tube cross beam 3 is also provided with a plurality of threaded holes, and bolts are screwed into the threaded holes for fixed connection. In addition, other methods such as welding may also be used.

[0031] The embodiment of the present invention further provides a construction method of the above-mentioned steel-concrete composite bridge prefabricated bridge deck mobile installation device, comprising the following method steps: Step S1: Check the construction site to ensure that it meets safety requirements; prepare the required materials and equipment, including H-shaped steel, vacuum suction cup 9, angle steel, bolt rod 11, electric hoist 8, traction equipment, adjustable support 10, track beam 4, and transport trolley; Step S2: screw the vacuum suction cup 9 into the nuts at both ends of the hollow square steel tube cross beam 3 through the bolt rod 11, and weld the adjustable support 10 to the bottom of the hollow square steel tube cross beam 3, and adjust the adjustable support to a suitable height so that the vacuum suction cup 9 can be adsorbed on the center position of the web of the bridge deck longitudinal beam 1; Step S3: placing one end of the hollow square steel tube cross beam 3 on the lower flange of the bridge deck longitudinal beam 1, and adsorbing the vacuum suction cup 9 on the web of the bridge deck longitudinal beam 1. Adjusting the appropriate length of the hollow square steel tube cross beam 3 according to the transverse spacing between the bridge deck longitudinal beams 1, while ensuring that the bolt holes 13 on the upper and lower walls of the large and small diameter square steel tubes are aligned, inserting the screw into the bolt hole 13, and screwing the nut to fix it, thereby limiting its free expansion and contraction, and placing the other end of the hollow square steel tube cross beam 3 on the lower flange of another bridge deck longitudinal beam 1; Step S4: fix the H-shaped steel column to both ends of the hollow square steel tube beam 3 by bolts and angle steels, and weld the track beam 4 at the top of the H-shaped steel column; Step S5: Install the transport trolley on the track beam 4, and weld the H-shaped steel load-bearing beam 6 on the transport trolley; Step S6: installing an electric hoist 8 on the lower flange of the H-shaped steel load-bearing beam 6; Step S7: Check the construction quality to ensure that all parts of the mobile installation equipment for the prefabricated bridge deck of the steel-concrete composite bridge are firmly installed, tightly connected, and meet the design requirements; Step S8: transport the bridge panel to the feeding area, support the load-bearing beam above the transport trolley through the traction equipment to move to the top of the feeding area, adjust the position of the electric hoist 8 and lower the hook to the appropriate position to lift the bridge panel, support the load-bearing beam of the transport trolley to move to the bridge panel installation area, lower the bridge panel to the appropriate position to install the bridge panel, and move the transport trolley and the beam it supports back to the feeding area to start the lifting of the next panel.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mobile installation device for prefabricated bridge decks of steel-concrete composite bridges, characterized in that: include: Two parallel I-shaped bridge deck longitudinal beams; A hollow square steel tube cross beam formed by plugging two hollow square steel tubes of different diameters is arranged between the two ends of the bridge deck longitudinal beam through a set of supporting docking components; Two track beams arranged in parallel along the longitudinal direction are arranged between the top surfaces of the two hollow square steel tube cross beams, and both ends of the track beams are respectively fixed to the top surfaces of the corresponding hollow square steel tube cross beams through a vertical H-shaped steel column; At least two load-bearing beams are arranged in parallel in the transverse direction on the track beam, and both ends of the load-bearing beams are respectively arranged on the corresponding track beams so as to be slidable back and forth by a traction and transportation trolley; At least two electric hoists which can slide horizontally left and right and are used for lifting the bridge deck are arranged on the lower flange of the load-bearing crossbeam.

2. The mobile installation device for prefabricated bridge deck of a steel-concrete composite bridge according to claim 1 is characterized in that: The supporting docking assembly includes a vacuum suction cup arranged on the side end face of the hollow square steel tube beam and an adjusting support arranged on the bottom end face, the vacuum suction cup is connected to the internal threaded long nut of the end plate of the hollow square steel tube beam through the end bolt rod, the adjusting support is welded to the bottom of the hollow square steel tube beam, and the two ends of the hollow square steel tube beam are respectively installed on the I-shaped side and bottom surface of the bridge deck longitudinal beam through the vacuum suction cup and the adjusting support; the upper and lower tube walls of the connecting parts of the two hollow square steel tubes are provided with a plurality of bolt holes, and bolt pins are inserted through alignment to limit the free expansion and contraction of the hollow steel tube beam, and the adjusting support is composed of two round steel tubes of different diameters nested with each other, and the nested steel tube walls of the round steel tubes are provided with circular holes and steel pins can be inserted into the holes to limit expansion and contraction.

3. The mobile installation device for prefabricated bridge deck of a steel-concrete composite bridge according to claim 2 is characterized in that: Both ends of the track groove of the track beam and both ends of the lower flange of the load-bearing crossbeam are respectively provided with limited angle steels.

4. The mobile installation device for prefabricated bridge deck of a steel-concrete composite bridge according to claim 3 is characterized in that: A square steel pad for support is welded to the bottom end of the lower round steel pipe and / or the upper round steel pipe of the adjusting support.

5. A construction method for the mobile installation device of the prefabricated bridge deck of a steel-concrete composite bridge as claimed in claims 1 to 4, characterized in that: The method comprises the following steps: Step S1: Check the construction site to ensure that it meets safety requirements; prepare the required materials and equipment, including H-shaped steel, vacuum suction cups, angle steel, bolts, electric hoists, traction equipment, adjustable supports, track beams, and transport trolleys; Step S2: screwing the vacuum suction cup into the nuts at both ends of the hollow square steel tube cross beam through the bolt rod, and welding the adjustable support to the bottom of the hollow square steel tube cross beam, and adjusting the adjustable support to a suitable height so that the vacuum suction cup can be adsorbed on the center position of the web of the bridge deck longitudinal beam; Step S3: placing one end of the hollow square steel tube cross beam on the lower flange of the bridge deck longitudinal beam, adsorbing the vacuum suction cup on the web of the bridge deck longitudinal beam, adjusting the appropriate length of the hollow square steel tube cross beam according to the transverse spacing between the bridge deck longitudinal beams while ensuring that the bolt holes on the upper and lower walls of the large and small diameter square steel tubes are aligned, inserting the screw into the bolt hole, and screwing the nut to fix it, thereby limiting its free expansion and contraction, and placing the other end of the hollow square steel tube cross beam on the lower flange of another bridge deck longitudinal beam; Step S4: fixing the H-shaped steel column to both ends of the hollow square steel tube beam by bolts and angle steels, and welding the track beam to the top of the H-shaped steel column; Step S5: installing the transport trolley on the track beam and welding an H-shaped steel load-bearing beam on the transport trolley; Step S6: installing an electric hoist on the lower flange of the H-shaped steel load-bearing beam; Step S7: Check the construction quality to ensure that all parts of the mobile installation equipment for the prefabricated bridge deck of the steel-concrete composite bridge are firmly installed, tightly connected, and meet the design requirements; Step S8: transport the bridge panel to the feeding area, support the load-bearing beam above the transport trolley through the traction equipment to move it above the feeding area, adjust the position of the electric hoist and lower the hook to the appropriate position to lift the bridge panel, support the load-bearing beam of the transport trolley to move to the bridge panel installation area, lower the bridge panel to the appropriate position to install the bridge panel, and move the transport trolley and the beam it supports back to the feeding area to start the lifting of the next panel.

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