Connecting device for steel pipe column and steel box cover beam of assembly type bridge

Abstract

The utility model relates to the technical field of assembly type bridge construction, in particular to a connecting device of an assembly type bridge steel pipe column and a steel box cover beam, the steel pipe column and the steel box cover beam are filled with concrete respectively, the steel box cover beam is arranged at the upper end of the steel pipe column, and the connecting device is arranged between the steel pipe column and the steel box cover beam. The connecting device comprises a plurality of stiffening rib plates and a plurality of stiffening steel plates, the stiffening rib plates are arranged at the lower end of the steel box cover beam and extend into the steel pipe column, one ends of the stiffening steel plates are connected with the side face of the steel box cover beam, the other ends of the stiffening steel plates extend into the steel pipe column, and the stiffening rib plates and the stiffening steel plates are perpendicularly connected into the steel pipe column. After concrete is poured into the steel pipe column, the concrete, the stiffening rib plate and the stiffening steel plate are fixed, the connectivity of the whole structure is enhanced, a plurality of holes are formed in the stiffening rib plate and the stiffening steel plate, the connecting area of the concrete is increased, and the connecting strength between the steel pipe column and the steel box cover beam is further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated bridge construction technology, and in particular to a connection device for prefabricated bridge steel pipe columns and steel box girder. Background Technology

[0002] Among prefabricated structures, steel-concrete composite structures are frequently used. In the highway construction industry, the superstructure of simply supported beam bridges often adopts prefabricated assembly structures, which include steel pipe columns and cap beams. Due to the large size of the components and the high safety risks of hoisting and transportation, they are generally connected by cast-in-place reinforced concrete. In recent years, with the rapid economic development in various regions, the carrying capacity of highways in some areas has become saturated, and expansion and renovation have been carried out to improve traffic service functions. In particular, in areas with flat terrain, it is conducive to the hoisting of large steel-concrete composite components, and fully prefabricated structure projects are gradually increasing.

[0003] In existing technology, steel pipe columns and cap beams are directly connected by concrete. Since the diameter of the steel pipe column is larger than the width of the steel box cap beam, there will be a gap between the steel pipe column and the steel box cap beam. At the same time, the connection position is high and the stress at the connection point is large. If the steel pipe column and the cap beam are only connected by concrete, some concrete will flow out from the gap when the concrete is poured. Furthermore, after the steel pipe column and the cap beam are connected for a period of time, some concrete is prone to falling off, causing the connection between the steel pipe column and the cap beam to loosen, which can easily lead to safety accidents. Utility Model Content

[0004] In view of the technical problems existing in the background art, the purpose of this utility model is to provide a connection device for prefabricated bridge steel pipe columns and steel box girder, which can strengthen the connection strength between the steel pipe columns and the box girder.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A connection device for prefabricated bridge steel pipe columns and steel box girder, wherein the steel pipe columns and steel box girder are respectively filled with concrete, the steel box girder is located at the upper end of the steel pipe column, and the connection device is located between the steel pipe column and the steel box girder. The connection device includes a plurality of stiffening ribs and a plurality of stiffening steel plates. The stiffening ribs are located at the lower end of the steel box girder and extend into the steel pipe column. One end of the stiffening steel plate is connected to the side of the steel box girder, and the other end extends into the steel pipe column. The stiffening ribs and stiffening steel plates are perpendicularly connected to each other in the steel pipe column.

[0007] Preferably, the connecting device further includes a connecting rib, which is disposed on the outside of the steel pipe column and one end of the connecting rib is connected to the steel box girder.

[0008] Preferably, the steel pipe column is equipped with a stiffening steel hoop, which is installed on the inner wall of the steel hoop column.

[0009] Preferably, the connecting device further includes a sealing plate, which is connected to the steel box girder, and the sealing plate and the steel box girder together close the opening of the steel pipe column.

[0010] Preferably, the sealing plate is provided with several slots, and the stiffening steel plate is disposed in the slots.

[0011] Preferably, the stiffening rib is provided with several through holes I for the flow of concrete.

[0012] Preferably, the stiffening steel plate is provided with several through holes II for the flow of concrete. This utility model has the following advantages and beneficial effects:

[0013] In this invention, the steel pipe column and the steel box girder are connected by stiffening ribs and stiffening steel plates. The stiffening ribs and stiffening steel plates extend into the steel pipe column. When concrete is poured into the steel pipe column, the concrete is fixed to the stiffening ribs and stiffening steel plates, enhancing the connectivity of the entire structure. Furthermore, the stiffening ribs and stiffening steel plates are provided with several holes, which increases the contact area of ​​the concrete and further enhances the connection strength between the steel pipe column and the steel box girder. Attached Figure Description

[0014] Figure 1 A cross-sectional view of a prefabricated bridge steel pipe column and steel box girder connection device provided by this utility model.

[0015] Figure 2 This is a left sectional view of a prefabricated bridge steel pipe column and steel box girder connection device provided by this utility model.

[0016] Figure 3 This utility model provides a top sectional view of a connection device for prefabricated bridge steel pipe columns and steel box girder.

[0017] Figure 4 A schematic diagram of the stiffening steel plate structure of a connection device for prefabricated bridge steel pipe columns and steel box girder provided by this utility model.

[0018] Figure 5 A schematic diagram of the stiffening steel hoop structure of a connection device for prefabricated bridge steel pipe columns and steel box girder provided by this utility model.

[0019] Figure 6 A schematic diagram of the sealing plate structure of a connection device for prefabricated bridge steel pipe columns and steel box girder provided by this utility model.

[0020] Reference numerals: 1-Steel pipe column, 2-Steel box girder, 3-Stiffening rib, 31-Through hole I, 4-Stiffening steel plate, 41-Through hole II, 42-Connecting groove, 5-Connecting rib, 6-Stiffening steel hoop, 7-Sealing plate, 71-Card slot. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Example

[0024] like Figure 1-3 As shown, a connection device for prefabricated bridge steel pipe columns 1 and steel box girder 2 is disclosed. The steel pipe column 1 and the steel box girder 2 are respectively filled with concrete, which stably connects them into one unit. The steel box girder 2 is located at the upper end of the steel pipe column 1 and is I-shaped. Concrete fills the interior of the steel box girder 2. The connection device is located between the steel pipe column 1 and the steel box girder 2. The connection device includes several stiffening ribs 3, several stiffening steel plates 4, connecting ribs 5, and sealing plates 7. The stiffening ribs 3 are fixedly located at the lower end of the steel box girder 2 and extend into the steel pipe column 1. With the side of the steel box girder 2 as a reference, the stiffening ribs 3 and the steel box girder 2 are arranged parallel to each other. The stiffening ribs 3 are provided with several through holes I 31 for concrete flow. After the concrete is poured into the steel pipe column 1, the concrete connects with the stiffening ribs 3. The through holes I 31 increase the contact area between the stiffening ribs 3 and the concrete, making the connection between the two more stable.

[0025] like Figure 1-4 As shown, one end of the stiffening steel plate 4 is fixedly connected to the side of the steel box girder 2, and the other end extends into the steel pipe column 1. A connecting groove 42 is provided in the middle of the stiffening steel plate 4. The stiffening steel plate 4 is supported on the lower end plate of the steel box girder 2, and the connecting groove 42 is supported on both sides of the steel box girder 2. The stiffening rib plate 3 and the stiffening steel plate 4 are arranged perpendicularly to each other in the steel pipe column 1. Several through holes Ⅱ 31 for concrete flow are provided on the stiffening steel plate 4. The through holes Ⅰ 31 increase the contact area between the stiffening steel plate 4 and the concrete, making the connection between the two more stable.

[0026] like Figure 1As shown, the connecting rib 5 is fixedly installed on the outside of the steel pipe column 1, and one end of the connecting rib 5 is fixedly connected to the steel box girder 2. The connecting rib 5 is externally fixed and, together with the internally connected concrete, enhances the connection strength between the steel pipe column 1 and the steel box girder 2.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, a stiffening steel hoop 6 is installed inside the steel pipe column 1. The stiffening steel hoop 6 is installed on the inner wall of the steel pipe column 1 and is arranged in a ring shape. The stiffening steel hoop 6 has several holes, which increases the contact area between the stiffening steel hoop 6 and the concrete, making the connection between the two more stable. When concrete is poured into the steel pipe column 1, there will be pressure at the upper end of the steel pipe column 1. After the stiffening steel hoop 6 is installed, the concrete adheres to the stiffening steel hoop 6, reducing the pressure at the upper end of the steel pipe column 1 and preventing local crushing.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, the sealing plate 7 and the steel box girder 2 are fixedly connected. One side of the sealing plate 7 is arc-shaped. The sealing plate 7 and the steel box girder 2 together close the pipe opening of the steel pipe column 1 and seal the top concrete, reducing the degree of impact of external climate on the concrete and improving the durability of the concrete inside the steel pipe column 1. The sealing plate 7 is provided with several slots 71, and the stiffening steel plate 4 is fixedly installed in the slots 71. The sealing plate 7 can not only close the pipe opening, but also increase the overall connection strength after being connected with the stiffening steel plate 4.

[0029] like Figure 1-6 As shown, the steel box girder 2 is directly supported on the top of the steel pipe column 1, and the load is transferred to the ground through the steel pipe column 1. The height of the steel box girder 2 varies with the span. The connection between the high-span steel box girder 2 and the steel pipe column 1 needs to withstand greater stress. Vertical stiffening ribs 3 are set to transfer vertical pressure; stiffening steel plates 4 extending into the steel pipe column 1 are set to prevent out-of-plane torsional deformation of the steel box girder 2; vertical connecting ribs 5 are set to transfer horizontal and vertical loads to the steel pipe column 1. The entire connection device not only strengthens the connection strength between the steel pipe column 1 and the steel box girder 2, but also allows the steel box girder 2 to disperse some of the stress, increasing the service life of the bridge.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection device for prefabricated bridge steel pipe columns and steel box girder, wherein the steel pipe columns and steel box girder are respectively filled with concrete, and the steel box girder is disposed at the upper end of the steel pipe column, characterized in that, The connecting device is installed between the steel pipe column and the steel box girder. The connecting device includes several stiffening ribs and several stiffening steel plates. The stiffening ribs are installed at the lower end of the steel box girder and extend into the steel pipe column. One end of the stiffening steel plate is connected to the side of the steel box girder, and the other end extends into the steel pipe column. The stiffening ribs and stiffening steel plates are installed perpendicular to each other in the steel pipe column.

2. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 1, characterized in that, The connecting device also includes a connecting rib, which is disposed on the outside of the steel pipe column, and one end of the connecting rib is connected to the steel box girder.

3. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 1, characterized in that, The steel pipe column is equipped with a stiffening steel hoop, which is installed on the inner wall of the steel hoop column.

4. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 1, characterized in that, The connecting device also includes a sealing plate, which is connected to the steel box girder. The sealing plate and the steel box girder together close the opening of the steel pipe column.

5. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 4, characterized in that, The sealing plate is provided with several slots, and the stiffening steel plate is placed in the slots.

6. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 1, characterized in that, The stiffening rib plate is provided with several through holes I for the flow of concrete.

7. The connection device for prefabricated bridge steel pipe columns and steel box girder according to claim 1, characterized in that, The stiffening steel plate is provided with several through holes II for the flow of concrete.

Images