CN216809536U - Concrete column steel and concrete combination connection structure - Google Patents

Abstract

The utility model relates to a concrete column steel-concrete combined connecting structure which comprises a bottom foundation and a concrete column, wherein the concrete column is arranged at the top of the bottom foundation, a steel bar and connecting reinforcing steel bars are pre-buried in the bottom foundation, main reinforcing steel bars of the concrete column are welded with vertical stiffening ribs arranged on an outer-coated steel plate outside the concrete column, the bottom foundation is connected with the concrete column through the connecting reinforcing steel bars, outer-coated concrete is poured outside the concrete column, crack development is reduced, larger cracking at splicing seams is avoided, the requirement of large eccentric stress can be met, the problem of fatigue stress of the seams is solved, and the stability of the structure in the construction process is ensured.

Description

Concrete column steel and concrete combination connection structure

Technical Field

The utility model relates to the field of bridge construction, in particular to a concrete column steel-concrete combined connecting structure.

Background

The segment prefabrication and assembly pier projects are gradually increased in recent years, the connection technology is taken as the core of structure safety, the existing commonly used piers comprise sleeve grouting, corrugated pipes, prestress and the like, all connections have advantages and disadvantages, for some piers with complex stress, such as frame piers crossing railways or highways, the dead load bending moment of the pier joint is large, the joint is in a large eccentric stress state for a long time, the bending moment caused by dynamic load is large, the fatigue problem is prominent, the requirements of high-seismic capacity and ductility of the connection in high-seismic areas are large, rapid assembly is often needed during construction, the stability and safety of the prefabricated piers are rapidly ensured, the commonly used connection mode is difficult to adapt to the requirements, and the common connection mode is difficult to be directly applied to actual projects.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a concrete column steel-concrete combined connecting structure which comprises a bottom foundation and a concrete column, wherein the concrete column is arranged at the top of the bottom foundation, a steel bar and connecting steel bars are pre-embedded in the bottom foundation, main reinforcements of the concrete column are welded with vertical stiffening ribs arranged on an outer-coated steel plate outside the concrete column, the bottom foundation is connected with the concrete column through the connecting steel bars, and outer-coated concrete is poured outside the concrete column.

Preferably, the concrete column outside is provided with connecting reinforcement, the connecting reinforcement outside is provided with the stirrup.

Preferably, the outside top of outsourcing steel sheet is provided with horizontal stiffening rib, the top slope of outsourcing steel sheet is provided with the steel apron, the outside middle part of outsourcing steel sheet is provided with the shear force key, the outsourcing steel sheet bottom outside is provided with the steel anchor slab, the inboard of outsourcing steel sheet is provided with vertical stiffening rib.

Further, the steel anchor plate comprises a horizontal plate and a vertical plate, an opening is formed in the horizontal plate of the steel anchor plate, and the opening of the horizontal plate of the steel anchor plate is connected with the outer concrete in a pin joint mode.

Furthermore, the steel bar corresponds to an opening in a steel anchor plate arranged on the outer side of the concrete column, and the steel bar is connected with the opening in the steel anchor plate through an anchor bolt and a high-strength bolt.

Furthermore, the main muscle and the vertical stiffening rib of concrete column carry out welded connection, be provided with the round hole on the vertical stiffening rib, penetrate the shear reinforcement in the round hole on the vertical stiffening rib.

Compared with the closest prior art, the utility model has the following beneficial effects:

the crack development is reduced, the large cracking at the splicing seam is avoided, the requirement of large eccentric stress can be met, the load is effectively dispersed and transmitted, the problem of fatigue stress of the seam is solved, the connecting steel bar can enter plasticity, the ductility capacity is provided for the connecting structure, the stress requirement of a seam high-vibration area is solved, the load of the concrete column is reliably transmitted to the foundation, the stability of the structure in the construction process is ensured, and the influence on closing railways and highways is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a concrete column steel-concrete combined connection structure in a front view, according to the present invention;

FIG. 2 is a longitudinal view of a concrete column steel-concrete combined connection structure provided by the utility model;

FIG. 3 is a cross-sectional view of a concrete column reinforced concrete composite connection structure provided by the present invention;

FIG. 4 is a schematic diagram of a basic structure of a concrete column steel-concrete combined connection structure provided by the utility model;

FIG. 5 is a schematic view of the steel plate, steel anchor plate, shear pin, horizontal and vertical stiffeners of the concrete column reinforced concrete composite connection structure provided by the present invention;

description of reference numerals:

1. a foundation; 2. a steel bar; 3. connecting reinforcing steel bars; 4. splicing seams; 5. a concrete column; 6. wrapping a steel plate; 7. a steel anchor plate; 8. a shear key; 9. a vertical stiffener; 10. a horizontal stiffener; 11. a steel cover plate; 12. a main rib; 13. hooping; 14. shear reinforcement bars; 15. and (5) coating concrete.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1:

the utility model provides a concrete column steel-concrete combined connecting structure, which comprises a bottom foundation 1 and a concrete column 5, wherein the top of the bottom foundation 1 is provided with the concrete column 5, a steel bar 2 and a connecting reinforcing steel bar 3 are pre-embedded in the bottom foundation 1, a main rib 12 of the concrete column 5 is welded with a vertical stiffening rib 9 arranged on an outer wrapping steel plate 6 outside the concrete column 5, the bottom foundation 1 is connected with the concrete column 5 through the connecting reinforcing steel bar 3, an outer wrapping concrete 15 is poured outside the concrete column 5, the foundation 1 is cast in situ on site, the steel bar 2 and the connecting reinforcing steel bar 3 are pre-embedded in the foundation 1, the concrete column 5, an outer wrapping steel plate 6 and a steel anchor plate 7 are prefabricated in a factory, the outer wrapping steel plate 6 is used as a construction template of the concrete column 5, the main rib 12 of the concrete column 5 is welded with the vertical stiffening rib 9 on the outer wrapping steel plate 6, hoisting the concrete column 5, as shown in fig. 2, penetrating the steel anchor plate 7 into the steel bar 2 and fastening, pouring the outer-coated concrete 15, and completing the installation of the steel-concrete combined connection structure, wherein the connecting steel bar 3 is positioned on the outer side of the concrete column 5, as shown in fig. 3, the shear steel bars 14 are penetrated in the round holes, the shear steel bars 14 and the round holes of the vertical stiffening ribs 9 form bidirectional shear keys, so that the concrete column 5 can be inserted into the connecting steel bar 3, as shown in fig. 4, the outer side of the connecting steel bar 3 is provided with the stirrups 13, and the stirrups 13 form a hoop effect on the outer-coated concrete 15, so that the anti-cracking and anti-compression capabilities of the outer-coated concrete 15 are increased, and the anchoring performance of the connecting steel bar 3 is ensured. The rod iron 2 with trompil one-to-one on the steel anchor plate 7 adopts crab-bolt, high strength bolt, prestressing steel bar etc. the bottom in the 6 outsourcing steel sheet is equipped with steel anchor plate 7, and steel anchor plate 7 comprises a plurality of vertical boards of horizontal plate and below, is equipped with the trompil on the horizontal plate, 2 one-to-ones of rod iron in trompil and the basis 1. As shown in fig. 5, the middle of the outer side of the outer steel plate 6 is provided with a plurality of shear keys 8, the top of the outer side of the outer steel plate 6 is provided with a horizontal stiffening rib 10, the horizontal stiffening rib 10 is used for bearing the local stress of the top connection area and ensuring the connection strength of the area, the horizontal plate is provided with a plurality of openings, the openings and the outer concrete 15 form pin joints to enhance the connection strength, and the horizontal plate can also be used as an exhaust hole during the construction of the outer concrete 15. The steel cover plate 11 is arranged at the topmost end of the outer steel plate 6, the steel cover plate 11 is arranged on a slope to facilitate water drainage and ensure the durability of the joint of the concrete column 5 and the outer steel plate 6, the vertical stiffening ribs 9 are arranged on the inner side of the outer steel plate 6, the main ribs 12 of the concrete column 5 are welded with the vertical stiffening ribs 9 through welding seams, round holes are arranged on part of the vertical stiffening ribs 9, when the main ribs 12 are stressed, the vertical shearing resistance of the main ribs 12 is favorable for the load transmission between the main ribs 12 and the outer steel plate 6, the horizontal shearing resistance of the main ribs ensures the combination between the concrete column 5 and the outer steel plate 6 and prevents the two from being debonded, the outer concrete 15 adopts fiber concrete or ultra-high performance concrete, the ultra-high performance concrete guarantees the anchoring strength of the connecting steel bars 3 on one hand, and on the other hand provides ultra-high performance concrete to improve the ductility of the structure when the concrete column 5 is pressed, the ultrahigh-performance concrete forms a hoop effect around the concrete column 5, so that the shock resistance of the bottom connection is enhanced.

The construction method of the embodiment is that the foundation 1 is constructed, the connecting steel bars 3 and the steel bars 2 are embedded in the foundation 1, the concrete column 5, the externally-coated steel plates 6 and the steel anchor plates 7 are prefabricated in a factory, the externally-coated steel plates 6 are used as construction templates of the concrete column 5, main ribs 12 of the concrete column 5 are welded with vertical stiffening ribs 9 on the externally-coated steel plates 6, splicing seams 4 are laid on the foundation 1, the concrete column 5 is hoisted, the steel anchor plates 7 penetrate into the steel bars 2 and are quickly fastened to the steel bars 2, stirrups 13 on the connecting steel bars 3 are bound, externally-coated concrete 15 is poured, and the steel-concrete combined connecting structure is installed.

While one embodiment of the present invention has been described in detail, the present invention is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (6)

1. The utility model provides a concrete column steel and concrete built-up connection structure, a serial communication port, including bottom basis (1), concrete column (5), bottom basis (1) top is provided with concrete column (5), vertical stiffening rib (9) welded connection who sets up on main muscle (12) and the outsourcing steel sheet (6) in the concrete column (5) outside of concrete column (5), bottom basis (1) is connected with connecting reinforcement (3) with concrete column (5), outsourcing concrete (15) have been pour in the concrete column (5) outside.

2. A concrete column steel-concrete combination connection structure according to claim 1, characterized in that the bottom of the outer side of the concrete column (5) is provided with a connecting steel bar (3), the outside of the connecting steel bar (3) is provided with a stirrup (13), and the connecting steel bar (3) and the steel bar (2) are embedded in the bottom foundation (1).

3. A concrete column steel-concrete combination connection structure according to claim 2, characterized in that the topmost end of the steel cladding plate (6) is provided with a steel cover plate (11), the steel cover plate (11) is obliquely arranged, the top of the outer side of the steel cladding plate (6) is provided with a horizontal stiffening rib (10), the middle of the outer side of the steel cladding plate (6) is provided with a shear key (8), the bottom of the outer side of the steel cladding plate (6) is provided with a steel anchor plate (7), and the inner side of the steel cladding plate (6) is provided with a vertical stiffening rib (9).

4. A concrete column steel-concrete combination connection according to claim 3, characterized in that the steel anchor plate (7) comprises a horizontal plate and a vertical plate, the horizontal plate of the steel anchor plate (7) is provided with an opening, and the opening of the horizontal plate of the steel anchor plate (7) is connected with the outer concrete (15) through a pin.

5. A concrete column steel-concrete combination connection according to claim 4, characterized in that the steel bar (2) corresponds to the hole of the steel anchor plate (7) arranged outside the concrete column (5), and the steel bar is connected with the hole of the steel anchor plate (7) by an anchor bolt.

6. A concrete column steel-concrete composite connecting structure according to claim 4, characterized in that the main reinforcement (12) of the concrete column (5) is welded with the vertical stiffening rib (9), a round hole is arranged on the vertical stiffening rib (9), and the shear steel bar (14) is inserted into the round hole on the vertical stiffening rib (9).

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