Fabricated connector for reinforced concrete pile and concrete-filled steel tubular column

Abstract

The utility model relates to the technical field of steel-concrete combined assembly structures, in particular to a reinforced concrete pile and concrete-filled steel tubular column assembly type connector which comprises a steel tube stand column and a wave-shaped protective tube, the steel tube stand column is supported on the reinforced concrete pile, the concrete-filled steel tubular column is formed through pouring of the connector, and a plurality of grout overflow holes are formed in the steel tube stand column. The corrugated protective pipe is arranged on the outer side of the steel pipe stand column in a sleeving mode and aligned with the grout overflow hole, the steel pipe stand column and the corrugated protective pipe are connected in a closed mode to form a cavity, a plurality of reinforcing meshes are arranged at the bottom of the steel pipe stand column in a staggered mode, and concrete is poured into the steel pipe stand column and flows into the cavity from the grout overflow hole. According to the utility model, the corrugated protective pipe is sleeved with the steel pipe, the size of the corrugated protective pipe is larger than that of a traditional straight pipe, and more concrete is poured into the joint, so that the connection between the reinforced concrete pile and the steel pipe concrete column becomes firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-concrete combined assembly structures, in particular to an assembled connection joint between a reinforced concrete pile and a steel tube concrete column. Background Art

[0002] The intelligent construction of prefabricated bridges is a development trend in bridge construction. Among prefabricated structures, steel-concrete composite (steel components and concrete) structures are more commonly used. In the highway construction industry, steel-concrete composite prefabricated structures are mostly used for superstructures. Reinforced concrete piles and cap beams adopt steel-concrete composite prefabricated structures. Due to the large components and high lifting requirements, they have not yet been fully promoted. In recent years, with the rapid economic development of various regions, the carrying capacity of highways in some areas has tended to be saturated, and expansion and reconstruction have been carried out to improve traffic service functions. In the early economically developed areas, the terrain was mostly flat, which was conducive to the lifting of large steel-concrete composite components, and the number of fully prefabricated structure projects has gradually increased.

[0003] The sleeve outside the steel pipe of the existing assembled connection joint between reinforced concrete piles and steel tube concrete columns is only connected by fixing it from below. When pouring concrete, the connection position may be damaged, affecting the quality of concrete pouring. Utility Model Content

[0004] In response to the technical problems existing in the background technology, the purpose of the utility model is to provide an assembled connection joint between reinforced concrete piles and steel tube concrete columns, which ensures the stability of the steel-concrete combination during connection, and at the same time ensures the connection strength between the various components during the concrete pouring process.

[0005] In order to achieve the above purpose, the technical solution provided by the present utility model is:

[0006] An assembled connection joint between reinforced concrete piles and steel tube concrete columns, the joint includes a steel tube column and a corrugated protective pipe, the steel tube column is supported on the reinforced concrete pile, the steel tube concrete column is cast by the joint, a plurality of overflow holes are provided on the steel tube column, the corrugated protective pipe is sleeved on the outside of the steel tube column and aligned with the overflow holes, the steel tube column and the corrugated protective pipe are closed and connected to form a cavity, a plurality of steel meshes are staggered at the bottom of the steel tube column, concrete is poured into the steel tube column, and flows into the cavity from the overflow holes.

[0007] Preferably, a plurality of steel bars are passed through the upper end of the reinforced concrete pile, and a plurality of stirrups are provided on the outer side of the steel pipe column, and the stirrups connect the steel bars to the outer side of the steel pipe column.

[0008] Preferably, an annular bottom sealing plate is provided at one end of the corrugated protective tube, and the bottom sealing plate is connected to the outer wall of the reinforced concrete pile for supporting the corrugated protective tube.

[0009] Preferably, a steel sealing plate is provided at the upper end of the corrugated protective tube, and one end of the steel sealing plate is provided with a plurality of positioning plates for connecting with the steel pipe columns.

[0010] Preferably, a plurality of stiffening ribs are provided in an annular shape inside the steel pipe column.

[0011] Preferably, the steel sealing plate is provided with a plurality of exhaust holes in an annular shape for pressure relief.

[0012] The utility model has the following advantages and beneficial effects:

[0013] In the present invention, a corrugated protective tube and a steel pipe are sleeved. The volume of the corrugated protective tube is larger than that of a traditional straight pipe, and more concrete is poured into the joint, making the connection between the reinforced concrete pile and the steel tube concrete column more secure. At the same time, a steel sealing plate is provided at the upper end of the corrugated protective tube, making the structure of the joint more stable, and avoiding the situation where the joint structure is damaged during the concrete pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the connection between the reinforced concrete pile and the steel tube concrete column assembly connection joint provided by the utility model;

[0015] Figure 2 This is a front view of the connection between the steel pipe column and the corrugated protective pipe of the assembled connection joint between the reinforced concrete pile and the steel pipe concrete column provided by the utility model;

[0016] Figure 3 This is a top view of the steel pipe column of the assembled connection joint between the reinforced concrete pile and the steel pipe concrete column provided by the utility model;

[0017] Figure 4 This is a schematic diagram of the steel sealing plate structure of the assembled connection joint between the reinforced concrete pile and the steel tube concrete column provided by the utility model;

[0018] Figure 5 This is a schematic diagram of the connection between the steel sealing plate and the corrugated protective tube of the assembled connection joint between the reinforced concrete pile and the steel tube concrete column provided by the utility model;

[0019] Figure 6 This is a schematic diagram of the connection between the corrugated protective tube and the bottom sealing plate of the assembled connection joint between the reinforced concrete pile and the steel tube concrete column provided by the utility model;

[0020] Figure 7 This is a partial enlarged view of the assembled connection joint between the reinforced concrete pile and the steel tube concrete column provided by the utility model;

[0021] Icons: 1-reinforced concrete pile, 101-rebar, 2-steel pipe column, 21-overflow hole, 22-stiffening rib plate, 23-rebar mesh, 24-stirrups, 3-corrugated protective pipe, 31-bottom sealing plate, 32-steel sealing plate, 321-exhaust hole, 33-positioning plate, A-cavity. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0023] 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 rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] Example

[0025] like Figure 1 、 2 As shown in Figures 3 and 7, a prefabricated connection joint is formed between a reinforced concrete pile and a steel tube concrete column. A plurality of steel bars 101 are passed through the upper end of the reinforced concrete pile 1, that is, the plurality of steel bars 101 are pre-buried in the reinforced concrete pile 1. The joint includes a steel tube column 2 and a corrugated protective tube 3. The steel tube column 2 is supported on the reinforced concrete pile 1, and the steel bars 101 and the steel tube column 2 are welded and fixed. The steel tube concrete column is formed by pouring concrete into the steel tube column 2. A plurality of overflow holes 21 are provided on the circumferential surface of the bottom end of the steel tube column 2. A plurality of stiffening ribs 22 are provided in an annular shape on the inner wall of the steel tube column 2. A plurality of hole structures are provided on the stiffening ribs 22. When concrete is poured into the steel tube column 2, the stiffening ribs 22 can increase the contact area between the concrete and the steel tube column 2, thereby improving the connection strength between the concrete and the inner wall of the steel tube column 2. A plurality of steel mesh sheets 23 are staggeredly arranged at the bottom of the steel tube column 2. Concrete is poured into the interlayer between the steel mesh sheets 23, which can improve the local bearing capacity of the steel tube concrete column and make the connection between the reinforced concrete pile 1 and the steel tube concrete column more stable.

[0026] like Figure 1 、 2As shown in Figures 7 and 8, a plurality of stirrups 24 are provided on the outside of the steel pipe column 2. The stirrups 24 are annularly sleeved on the outside of the steel pipe column 2. The stirrups 24 are welded to the steel bars 101 to firmly connect the steel bars 101 to the outside of the steel pipe column 2. Adjacent stirrups 24 are spaced apart. The stirrups 24 can improve the integrity and shear resistance of the steel bars 101 and prevent the steel bars 101 from breaking during the concrete pouring process.

[0027] like Figure 1-7 As shown, the corrugated protective tube 3 is sleeved on the outside of the steel pipe column 2 and aligned with the overflow hole 21. One end of the corrugated protective tube 3 is provided with an annular bottom sealing plate 31, which is connected to the outer wall of the steel bar 101 concrete pile 1 to support the corrugated protective tube 3. The upper end of the corrugated protective tube 3 is provided with a steel sealing plate 32, and one end of the steel sealing plate 32 is provided with a plurality of positioning plates 33 for connecting with the steel pipe column 2. A cavity A is formed between the steel pipe column 2 and the corrugated protective tube 3. A plurality of exhaust holes 321 for pressure relief are annularly provided on the steel sealing plate 32, and the exhaust holes 321 are opposite to the cavity A. When concrete is poured into the steel pipe column 2, the concrete is discharged from the overflow hole 21 into the cavity A, filling the cavity A, and the concrete poured into the steel pipe column 2 is poured into the cavity A simultaneously, thereby improving the integrity and bearing capacity of the joint. The steel sealing plate 32 strengthens the connection between the steel pipe column 2 and the corrugated protective tube 3. When concrete is poured into the corrugated protective tube 3, the bottom end of the corrugated protective tube 3 does not deform due to stress. At the same time, the positioning plate 33 increases the contact area between the concrete and the cavity A, thereby improving the bonding strength between the concrete and the cavity A. When the concrete is completely poured into the steel pipe column 2, a steel tube concrete column is formed.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The assembled connection joint between reinforced concrete pile and steel tube concrete column is characterized by: The joint includes a steel pipe column and a corrugated protective pipe. The steel pipe column is supported on a reinforced concrete pile. The steel pipe concrete column is formed by pouring concrete into the steel pipe column. A plurality of overflow holes are provided on the steel pipe column. The corrugated protective pipe is sleeved on the outside of the steel pipe column and aligned with the overflow holes. The steel pipe column and the corrugated protective pipe are closed and connected to form a cavity. A plurality of steel meshes are staggered at the bottom of the steel pipe column. The concrete poured into the steel pipe column can flow into the cavity through the overflow holes.

2. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 1, characterized in that: A plurality of steel bars are passed through the upper end of the reinforced concrete pile, and a plurality of stirrups are arranged on the outer side of the steel pipe column. The stirrups connect the steel bars to the outer side of the steel pipe column.

3. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 1, characterized in that: An annular bottom sealing plate is provided at one end of the corrugated protective tube, and the bottom sealing plate is connected to the outer wall of the reinforced concrete pile for supporting the corrugated protective tube.

4. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 1, characterized in that: A steel sealing plate is provided at the upper end of the corrugated protective tube, and one end of the steel sealing plate is provided with a plurality of positioning plates for connecting with steel pipe columns.

5. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 1, characterized in that: A plurality of stiffening ribs are arranged in a ring shape inside the steel pipe column.

6. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 4, characterized in that: The steel sealing plate is provided with a plurality of exhaust holes in an annular shape for relieving pressure.

7. The assembled connection joint between reinforced concrete pile and steel tube concrete column according to claim 2, characterized in that: The steel bars and the steel pipe columns are welded and fixed.

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