Steel pipe support type steel box girder integral in-situ assembling pedestal

Abstract

The utility model discloses a steel pipe support type steel box girder integral in-situ assembling pedestal which comprises a concrete leveling layer, the concrete leveling layer is arranged on a road surface, a left I-shaped steel bearing beam and a right I-shaped steel bearing beam are arranged on the concrete leveling layer in the transverse bridge direction, and the left I-shaped steel bearing beam and the right I-shaped steel bearing beam are arranged on the concrete leveling layer. A left bottom plate left side steel pipe supporting pad and a left bottom plate right side steel pipe supporting pad which are used for correspondingly supporting the left side and the right side of the bottom of a left bottom plate of the steel box girder are vertically and fixedly arranged on the left I-shaped steel bearing beam, and a transverse partition plate left side steel pipe supporting pad used for supporting the left side of the bottom of a transverse partition plate of the steel box girder is further vertically and fixedly arranged on the left I-shaped steel bearing beam. A right bottom plate left side steel pipe supporting pad and a right bottom plate right side steel pipe supporting pad which are used for correspondingly supporting the left side and the right side of the bottom of a right bottom plate of the steel box girder are vertically and fixedly arranged on the right I-shaped steel bearing beam, and a transverse partition plate right side steel pipe supporting pad used for supporting the right side of the bottom of a transverse partition plate of the steel box girder is further vertically and fixedly arranged on the right I-shaped steel bearing beam. The steel pipe support type steel box girder integral in-situ assembly pedestal is low in construction cost and convenient to dismantle in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder construction, in particular to a steel pipe bracket type steel box girder integral in-situ assembly pedestal. Background Art

[0002] With the continuous development of highway construction, prefabricated beams are widely used in the construction of bridge superstructures, and steel box beams are also widely used in interchange hub projects. Steel box beams are also called steel plate box beams. Steel box beams are a common structural form for large-span bridges. They are generally used on bridges with larger spans. Because they look like a box, they are called steel box beams. Steel box beams are generally connected by a full welding method, including top plate, bottom plate, web plate, diaphragm, longitudinal diaphragm and stiffening ribs. In bridge steel structures, due to the requirements of use function and bearing capacity, more and more steel box bridges are developing in the direction of large span and large cross-section. However, due to the limitations of factors such as transportation and lifting equipment, steel box bridges are generally divided into sections and manufactured in factories, and then transported to the construction site for assembly and welding. Due to the large cross-section, heavy tonnage and complex construction site conditions of steel box beams, the box body is prone to dislocation during the hoisting and splicing process, coupled with deformation during welding, resulting in a decrease in the construction quality and strength of steel box beams.

[0003] In order to ensure that the steel box girder to be installed is accurately aligned with the installed steel box girder, the steel box girder to be installed needs to be assembled and welded as a whole on the ground pedestal at the installation position, and then lifted as a whole after the overall assembly and welding. The traditional pedestal design is often similar to the pedestal design of the prefabricated beam yard, using concrete strips as ground tires. Such ground tires often take a long time to construct and have high overall costs. In road-related construction, the ground tires need to be set on existing highways, which is inconvenient to remove later. Therefore, it is necessary to design a pedestal for the overall assembly of steel box girders in situ with low construction costs and convenient later dismantling. Summary of the invention

[0004] The utility model aims to provide a steel tube bracket type steel box girder integral on-site assembly pedestal, which has low construction cost and is easy to dismantle at a later stage.

[0005] The utility model is realized by the following technical solutions:

[0006] A steel tube support type steel box girder integral on-site assembly pedestal, which includes a concrete leveling layer, wherein the concrete leveling layer is arranged on the road surface, and a left I-beam pad and a right I-beam pad are placed on the concrete leveling layer in the transverse direction of the bridge, and a left bottom plate left-side steel tube support and a left bottom plate right-side steel tube support are vertically fixedly arranged on the left I-beam pad for correspondingly supporting the left and right sides of the bottom of the left bottom plate of the steel box girder, and a left diaphragm left-side steel tube support for supporting the left side of the bottom of the diaphragm of the steel box girder is also vertically fixedly arranged on the left I-beam pad, and a right bottom plate left-side steel tube support and a right bottom plate right-side steel tube support are vertically fixedly arranged on the right I-beam pad for correspondingly supporting the left and right sides of the bottom of the right bottom plate of the steel box girder, and a right diaphragm right-side steel tube support for supporting the right side of the bottom of the diaphragm of the steel box girder is also vertically fixedly arranged on the right I-beam pad.

[0007] Further preferred: the concrete leveling layer is divided into a left concrete leveling layer and a right concrete leveling layer, the left I-beam pad is placed on the left concrete leveling layer, and the right I-beam pad is placed on the right concrete leveling layer. The concrete leveling layer uses C20 grade concrete to level the pedestal area so that the left I-beam pad and the right I-beam pad can be placed. The concrete leveling layer is a rectangular area, which is 10 cm wider than the left I-beam pad or the right I-beam pad, and the length corresponds to 20 cm outward from the projection position of the steel pipe support on each side, which can reduce the amount of concrete used, make dismantling more convenient, and avoid generating more construction waste.

[0008] Further preferably, an isolation membrane is placed at the bottom of the concrete leveling layer, and the isolation membrane is located between the concrete leveling layer and the road surface. The isolation membrane is made of a plastic film, and the plastic film is provided to prevent the concrete leveling layer from damaging the existing road surface and being difficult to remove.

[0009] Further preferred: the left I-beam pad beam and the right I-beam pad beam adopt a double-piece I-beam structure, and the corresponding steel pipe supports are directly welded to the top of the double-piece I-beam.

[0010] Further preferred: a transverse connecting rod is fixedly connected between the left side steel pipe support pad of the transverse diaphragm and the right side steel pipe support pad of the transverse diaphragm, which is used to transfer the load of the steel box girder to the I-beam pad beam.

[0011] The steel tube bracket type steel box girder integral in-situ assembly pedestal is constructed on the ground below the installation position of the steel box girder to be installed. First, according to the design drawings, the left I-beam pad, the left side steel tube pad of the left bottom plate, the right side steel tube pad of the left bottom plate, the left side steel tube pad of the diaphragm, the cross connecting rod, the right side steel tube pad of the diaphragm, the left side steel tube pad of the right bottom plate, the right I-beam pad and the right side steel tube pad of the right bottom plate are manufactured. The left side steel tube pad of the left bottom plate, the right side steel tube pad of the left bottom plate and the left side steel tube pad of the diaphragm are welded and fixed. I-beam pad and right side steel pipe pad of right bottom plate, finally use horizontal connecting rod to fix and connect the left side steel pipe pad of transverse diaphragm and the right side steel pipe pad of transverse diaphragm for standby use; construct left concrete leveling layer and right concrete leveling layer at both ends of the ground projection position of the steel box girder to be installed, lay isolation membrane at the position of left concrete leveling layer and right concrete leveling layer respectively, after the left concrete leveling layer and right concrete leveling layer are cured to reach qualified hardness, place left I-beam pad and right I-beam pad on the left concrete leveling layer and right concrete leveling layer respectively, and then the steel box girder to be installed can be assembled and welded as a whole. The construction cost of the overall in-situ assembly pedestal of the steel box girder of this steel pipe bracket type is low, and it is easy to dismantle in the later stage, which is particularly suitable for the construction of steel box girders involving roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation structure of the steel tube bracket type steel box girder integral on-site assembly pedestal;

[0013] Figure 2 This is a structural schematic diagram of the in-situ assembly pedestal of the steel tube support type steel box girder;

[0014] Figure 3 yes Figure 2 Schematic diagram of the left side;

[0015] The names corresponding to the numbers in the figure are:

[0016] 1. Isolation membrane, 2. Left concrete leveling layer, 3. Left I-beam cushion beam, 4. Left steel pipe support on the left side of the left bottom plate, 5. Left bottom plate of steel box girder, 6. Right steel pipe support on the left bottom plate, 7. Left steel pipe support on the diaphragm, 8. Diaphragm of steel box girder, 9. Transverse connecting rod, 10. Right steel pipe support on the diaphragm, 11. Left steel pipe support on the right side of the diaphragm, 12. Right I-beam cushion beam, 13. Right concrete leveling layer, 14. Right steel pipe support on the right bottom plate, 15. Right bottom plate of steel box girder. DETAILED DESCRIPTION

[0017] In order to describe the present technology more clearly, the present technology is further described in detail below with reference to the accompanying drawings and embodiments. Example

[0018] A steel tube support type steel box girder integrally assembled on-site pedestal, comprising a concrete leveling layer, the concrete leveling layer is arranged on the road surface, a left I-beam pad beam 3 and a right I-beam pad beam 12 are placed on the concrete leveling layer in the transverse direction of the bridge, the concrete leveling layer is divided into a left concrete leveling layer 2 and a right concrete leveling layer 13, the left I-beam pad beam 3 is placed on the left concrete leveling layer 2, and the right I-beam pad beam 12 is placed on the right concrete leveling layer 13. The concrete leveling layer is made by leveling the pedestal area with C20 grade concrete so that the left I-beam pad beam 3 and the right I-beam pad beam 12 can be placed. The concrete leveling layer is a rectangular area, the width of which is 10 cm wider than the left I-beam pad beam 3 or the right I-beam pad beam 12, and the length corresponds to 20 cm outward from the projection position of the steel tube support pad on each side.

[0019] The left I-beam cushion beam 3 is vertically fixed with a left bottom plate left steel pipe support 4 and a left bottom plate right steel pipe support 6 for correspondingly supporting the left and right sides of the bottom of the left bottom plate 5 of the steel box beam. The left I-beam cushion beam 3 is also vertically fixed with a left diaphragm steel pipe support 7 for supporting the left side of the bottom of the diaphragm 8 of the steel box beam. The right I-beam cushion beam 12 is vertically fixed with a right bottom plate left steel pipe support 11 and a right bottom plate right steel pipe support 14 for correspondingly supporting the left and right sides of the bottom of the right bottom plate 15 of the steel box beam. The right I-beam cushion beam 12 is also vertically fixed with a diaphragm right steel pipe support 10 for supporting the right side of the bottom of the diaphragm 8 of the steel box beam. An isolation membrane 1 is placed at the bottom of the concrete leveling layer, and the isolation membrane 1 is located between the concrete leveling layer and the road surface. The isolation membrane 1 is made of plastic film, and the plastic film is provided to prevent the concrete leveling layer from damaging the existing road surface and being difficult to remove.

[0020] The left I-beam cushion beam 3 and the right I-beam cushion beam 12 adopt a double-jointed I-beam structure, and the corresponding steel pipe supports are directly welded to the top of the double-jointed I-beam.

[0021] A transverse connecting rod 9 is fixedly connected between the left-side steel pipe support pad 7 of the transverse diaphragm and the right-side steel pipe support pad 10 of the transverse diaphragm.

[0022] The construction process of the steel tube bracket type steel box girder integral in-situ assembly pedestal is as follows: according to the design drawings, make the left I-beam cushion beam 3, the left side steel tube support pad 4 of the left bottom plate, the right side steel tube support pad 6 of the left bottom plate, the left side steel tube support pad 7 of the diaphragm, the cross connecting rod 9, the right side steel tube support pad 10 of the diaphragm, the left side steel tube support pad 11 of the right bottom plate, the right I-beam cushion beam 12 and the right side steel tube support pad 14 of the right bottom plate; The pipe support pad 7 and the left I-beam cushion beam 3 are welded and fixed, and the right side steel pipe support pad 10 of the transverse diaphragm, the left side steel pipe support pad 11 of the right bottom plate, the right I-beam cushion beam 12 and the right side steel pipe support pad 14 of the right bottom plate are connected. Finally, the left side steel pipe support pad 7 of the transverse diaphragm and the right side steel pipe support pad 10 of the transverse diaphragm are fixedly connected with the transverse connecting rod 9 for standby use; project marks on the ground below the installation position of the steel box girder to be installed to mark the position of the steel box girder to be installed, and symmetrically draw the left concrete leveling layer 2 and At the position of the right concrete leveling layer 13, the isolation membrane 1 is laid at the positions of the left concrete leveling layer 2 and the right concrete leveling layer 13 respectively, and then the C20 grade concrete is used to level the left concrete leveling layer 2 and the right concrete leveling layer 13. After the curing reaches the qualified hardness, the left I-beam cushion beam 3 and the right I-beam cushion beam 12 are placed on the left concrete leveling layer 2 and the right concrete leveling layer 13 respectively, and the steel box girder to be installed can be assembled and welded as a whole. The pipe support pad 4 is supported on the bottom left side of the left bottom plate 5 of the steel box girder, the right side steel pipe support pad 6 of the left bottom plate is supported on the bottom right side of the left bottom plate 5 of the steel box girder, the left side steel pipe support pad 7 of the diaphragm is supported on the left bottom side of the diaphragm 8 of the steel box girder, the right side steel pipe support pad 10 of the diaphragm is supported on the right bottom side of the diaphragm 8 of the steel box girder, the left side steel pipe support pad 11 of the right bottom plate is supported on the bottom left side of the right bottom plate 15 of the steel box girder, and the right side steel pipe support pad 14 of the right bottom plate is supported on the bottom right side of the right bottom plate 15 of the steel box girder.

[0023] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present application should fall within the scope of protection of the present application.

Claims

1. A steel tube support type steel box girder integral in-situ assembly pedestal, characterized by: The invention comprises a concrete leveling layer, wherein the concrete leveling layer is arranged on the road surface, and a left I-beam cushion beam (3) and a right I-beam cushion beam (12) are arranged on the concrete leveling layer in the transverse direction of the bridge, and a left bottom plate left steel pipe support (4) and a left bottom plate right steel pipe support (6) are vertically fixedly arranged on the left I-beam cushion beam (3) for correspondingly supporting the left and right sides of the bottom of the left bottom plate (5) of the steel box beam, and a left diaphragm left steel pipe support (7) for supporting the left side of the bottom of the cross diaphragm (8) of the steel box beam is also vertically fixedly arranged on the left I-beam cushion beam (3), and a right bottom plate left steel pipe support (11) and a right bottom plate right steel pipe support (14) are vertically fixedly arranged on the right I-beam cushion beam (12) for correspondingly supporting the left and right sides of the bottom of the right bottom plate (15) of the steel box beam, and a right diaphragm right steel pipe support (10) for supporting the right side of the bottom of the cross diaphragm (8) of the steel box beam is also vertically fixedly arranged on the right I-beam cushion beam (12).

2. The steel tube support type steel box girder integral in-situ assembly pedestal according to claim 1 is characterized by: The concrete leveling layer is divided into a left concrete leveling layer (2) and a right concrete leveling layer (13). The left I-beam cushion beam (3) is placed on the left concrete leveling layer (2), and the right I-beam cushion beam (12) is placed on the right concrete leveling layer (13).

3. The steel tube support type steel box girder integral in-situ assembly pedestal according to claim 1 or 2, characterized in that: An isolation membrane (1) is placed at the bottom of the concrete leveling layer, and the isolation membrane (1) is located between the concrete leveling layer and the road surface.

4. The steel tube support type steel box girder integral in-situ assembly pedestal according to claim 1 or 2, characterized in that: The left I-beam cushion beam (3) and the right I-beam cushion beam (12) adopt a double-jointed I-beam structure.

5. The steel tube support type steel box girder integral in-situ assembly pedestal according to claim 1 is characterized by: A transverse connecting rod (9) is fixedly connected between the left-side steel pipe support pad (7) of the transverse diaphragm and the right-side steel pipe support pad (10) of the transverse diaphragm.

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