Consolidation connection structure of concrete-filled steel tube arch rib and on-arch stand column

Abstract

The utility model discloses a consolidation connection structure of a concrete filled steel tube arch rib and an on-arch stand column, which relates to the technical field of constructional engineering and comprises a main arch main pipe, a stand column main pipe and consolidation components. The stand column main pipe comprises a first stand column, a second stand column, a first reinforcing piece, a second reinforcing piece and a third reinforcing piece. The first stand column is detachably connected with the second stand column. The consolidation assembly comprises a column foot steel box and a consolidation piece, and a pouring cavity is formed in the column foot steel box; the pouring cavity is formed in the periphery of the stand column main pipe by arranging the column foot steel box, the buckling resistance of the connecting joint position is enhanced through the first stiffening plate, the second stiffening plate and the third stiffening plate, and after the consolidation piece is poured in the pouring cavity, corrosion is avoided, and meanwhile the connecting stability of the first stand column and the second stand column is enhanced; the connecting points between the stand column main pipe and the main arch main pipe are wrapped by the consolidation pieces, the situation that in welding connection, welding seams are exposed in the external environment and are prone to being affected by the environment is avoided, and the bearing capacity of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a consolidation connection structure of a steel tube concrete arch rib and an arch column. Background Art

[0002] In Article 8.4.3 of the "Design Specifications for Highway Steel Tube Concrete Arch Bridges" (JTG / T D65-06-2015), two types of connection between steel tube concrete arch ribs and arch columns are given (see Figure 1 ), divided into column footings with padded beams and column footings without padded beams. Column footings with padded beams are welded to the columns through the embedded steel plates on the padded beams, while column footings without padded beams are connected by welding with the main arch; the two schemes provided in the current specifications (column footings with padded beams and column footings without padded beams) both use the welding connection of steel tube concrete arch ribs and columns on the arches. The welds of welded connections are exposed to the external environment and are easily affected by the environment, which will cause the bearing capacity of the structure to decrease through rust, making the safe operation of the structure not guaranteed. Utility Model Content

[0003] The main purpose of the utility model is to provide a consolidation connection structure of steel tube concrete arch ribs and arch columns, which is used to solve the problem that the existing connection form of steel tube concrete arch ribs and arch columns causes rust due to environmental influences, resulting in a decrease in the bearing capacity of the structure.

[0004] To achieve the above object, the utility model provides a consolidation connection structure of a steel tube concrete arch rib and an arch column, comprising a main arch main pipe and a column main pipe; and also comprising:

[0005] The column main pipe comprises a first column welded to the main arch main pipe and a second column arranged on the first column; the first column and the second column are detachably connected; a first reinforcement member is arranged between the first column and the main arch main pipe, and a second reinforcement member and a third reinforcement member are respectively arranged on the adjacent ends of the first column and the second column;

[0006] The consolidation assembly comprises a column foot steel box arranged on the main arch pipe and a consolidation piece arranged in the column foot steel box; a casting cavity is arranged in the column foot steel box; and a connecting piece is arranged on the inner wall of the casting cavity.

[0007] As a further improvement of the present invention, the first reinforcement member includes a first stiffening plate; the first stiffening plate is evenly arranged at one end of the first column adjacent to the main arch main pipe, and the first stiffening plate is fixedly connected to the main arch main pipe; the second reinforcement member includes a second stiffening plate; the third reinforcement member includes a third stiffening plate; the first column and the second column are respectively provided with a first flange and a second flange; the second stiffening plate and the third stiffening plate are respectively fixedly connected to the first flange and the second flange.

[0008] As a further improvement of the present invention, the first flange and the second flange are located in the casting cavity.

[0009] As a further improvement of the present invention, the column base steel box includes a first column base steel plate, a second column base steel plate and two groups of third column base steel plates that are relatively arranged, and the two groups of third column base steel plates are respectively connected to the first column base steel plate and the second column base steel plate; the first column base steel plate, the second column base steel plate and the two groups of third column base steel plates are respectively fixedly connected to the main arch main pipe.

[0010] As a further improvement of the utility model, the connecting member includes a first connecting steel bar arranged between a first steel plate at the column base and a second steel plate at the column base, and a second connecting steel bar arranged between two groups of third steel plates at the column base; welding nails are respectively provided on the inner walls of the first steel plate at the column base, the second steel plate at the column base, and the third steel plate at the column base.

[0011] The beneficial effects of the utility model are embodied in:

[0012] A casting cavity is formed around the column main pipe by arranging a column foot steel box, and the anti-buckling capacity of the connection node position is strengthened by the first stiffening plate, the second stiffening plate and the third stiffening plate. After the consolidating member is cast in the casting cavity, the first flange and the second flange connecting the first column and the second column are wrapped inside to avoid rust while enhancing the connection stability of the first column and the second column; the consolidating member wraps the connection point between the column main pipe and the main arch main pipe to avoid the weld in the welded connection being exposed to the external environment and being susceptible to environmental influences, thereby improving the bearing capacity of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the connection structure between the steel tube concrete arch rib and the arch column in the "Highway Steel Tube Concrete Arch Bridge Design Code";

[0014] Figure 2 It is a schematic diagram of the overall structure of the consolidation connection structure of the steel tube concrete arch rib and the arch column of the utility model;

[0015] Figure 3 It is a schematic diagram of the elevation structure of the consolidation connection structure of the steel tube concrete arch rib and the arch upper column of the utility model;

[0016] Figure 4 It is a top view of the consolidation connection structure of the steel tube concrete arch rib and the arch upper column of the utility model;

[0017] Figure 5 It is a schematic diagram of the column main pipe connection structure of the consolidation connection structure of the steel tube concrete arch rib and the column on the arch in the utility model;

[0018] Figure 6It is a schematic diagram of the second flange structure of the consolidation connection structure of the steel tube concrete arch rib and the arch column of the utility model;

[0019] Figure 7 It is a schematic diagram of the first steel plate structure of the column foot of the consolidation connection structure of the steel tube concrete arch rib and the column on the arch in the utility model;

[0020] Figure 8 It is a schematic diagram of the second steel plate structure of the column foot of the consolidation connection structure of the steel tube concrete arch rib and the column on the arch in the utility model;

[0021] Fig. 9 It is a schematic diagram of the third steel plate structure of the column foot of the consolidation connection structure of the steel tube concrete arch rib and the column above the arch in the utility model;

[0022] Description of reference numerals:

[0023] 1. Main arch main pipe; 2. Column main pipe; 3. First column; 4. Second column; 5. First reinforcement member; 501. First stiffening plate; 6. Second reinforcement member; 601. Second stiffening plate; 7. Third reinforcement member; 701. Third stiffening plate; 8. Column base steel box; 9. Consolidation member; 10. Casting cavity; 11. Connector; 12. First flange; 13. Second flange; 14. High-strength bolt; 15. First steel plate at column base; 16. Second steel plate at column base; 17. Third steel plate at column base; 18. First connecting steel bar; 19. Welding nails. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] In one embodiment, see Figure 2 The utility model discloses a consolidation connection structure of a steel tube concrete arch rib and an arch column, comprising a main arch main pipe 1, a column main pipe 2, and a consolidation assembly.

[0026] Among them, the column main pipe 2 includes a first column 3 welded to the main arch main pipe 1, and a second column 4 arranged on the first column 3, and the first column 3 and the second column 4 are detachably connected; a first reinforcement 5 is arranged between the first column 3 and the main arch main pipe 1, and a second reinforcement 6 and a third reinforcement 7 are respectively arranged on the adjacent ends of the first column 3 and the second column 4; the consolidation assembly includes a column base steel box 8 arranged on the main arch main pipe 1, and a consolidation member 9 arranged in the column base steel box 8, a casting cavity 10 is arranged in the column base steel box 8, and a connecting member 11 is arranged on the inner wall of the casting cavity 10.

[0027] For further information, see Figure 2 , 4 , 5, 6, the first reinforcement 5 includes a first stiffening plate 501, the first stiffening plate 501 is evenly arranged at one end of the first column 3 adjacent to the main arch main pipe 1, and the first stiffening plate 501 is fixedly connected to the main arch main pipe 1; the second reinforcement 6 includes a second stiffening plate 601, the third reinforcement 7 includes a third stiffening plate 701, the first column 3 and the second column 4 are respectively provided with a first flange 12 and a second flange 13, the second stiffening plate 601 and the third stiffening plate 701 are respectively fixedly connected to the first flange 12 and the second flange 13.

[0028] Preferably, the first column 3 and the main arch main pipe 1 and the first stiffening plate 501 and the first column 3 and the main arch main pipe 1 are connected by welding, the second stiffening plate 601 and the first column 3 and the first flange 12 are connected by welding, and the third stiffening plate 701 and the second column 4 and the second flange 13 are connected by welding.

[0029] Preferably, the first flange 12 and the second flange 13 are respectively provided with connection holes, and the first flange 12 and the second flange 13 are connected by high-strength bolts 14 passing through the connection holes, thereby improving the efficiency during the construction process.

[0030] For further information, see Figure 2 , 3 The first flange 12 and the second flange 13 are located in the casting cavity 10 .

[0031] In the above-mentioned configuration, the first stiffening plate 501, the second stiffening plate 601, and the third stiffening plate 701 are provided to strengthen the anti-buckling capacity of the connection node position, and the first flange 12 and the second flange 13 are connected by the high-strength bolts 14, so that the first column 3 and the second column 4 are connected together to ensure the stability of the connection; the first flange 12 and the second flange 13 are located in the casting cavity 10, and after the fastener 9 is cast in the casting cavity 10, the first flange 12 and the second flange 13 can be wrapped therein, thereby preventing the first flange 12, the second flange 13, and the high-strength bolts 14 from rusting, thereby ensuring the stability of the connection.

[0032] For further information, see Figure 2 The column base steel box 8 includes a first column base steel plate 15, a second column base steel plate 16 and two groups of third column base steel plates 17 that are relatively arranged. The two groups of third column base steel plates 17 are respectively connected to the first column base steel plate 15 and the second column base steel plate 16. The first column base steel plate 15, the second column base steel plate 16 and the two groups of third column base steel plates 17 are respectively fixedly connected to the main arch main pipe 1.

[0033] Preferably, arc-shaped grooves are provided at the bottom ends of the first column foot steel plate 15 and the second column foot steel plate 16 to facilitate fitting with the main arch pipe 1 .

[0034] In the above arrangement, the first steel plate 15, the second steel plate 16 and the third steel plate 17 of the column base are respectively connected to the main arch main pipe 1 by welding, and the first steel plate 15, the second steel plate 16 and the third steel plate 17 of the column base are enclosed to form a casting cavity 10.

[0035] For further information, see Figure 2 , 7 , 8, 9, the connecting member 11 includes a first connecting steel bar 18 arranged between the first steel plate 15 of the column foot and the second steel plate 16 of the column foot, and a second connecting steel bar 18 arranged between two groups of third steel plates 17 of the column foot; welding nails 19 are respectively provided on the inner walls of the first steel plate 15 of the column foot, the second steel plate 16 of the column foot and the third steel plate 17 of the column foot.

[0036] Preferably, the first connecting steel bar 18 and the second connecting steel bar are respectively connected to the first steel plate 15 of the column foot, the second steel plate 16 of the column foot, and the third steel plate 17 of the column foot by welding.

[0037] Preferably, the welding studs 19 are arranged at intervals on the inner walls of the first steel plate 15 of the column base, the second steel plate 16 of the column base, and the third steel plate 17 of the column base, and an elbow is provided on the end of the welding stud 19, forming an "L"-shaped structure between the elbow and the welding stud 19.

[0038] Preferably, the consolidating member 9 is made of self-compacting micro-expansive concrete.

[0039] In the above-mentioned setting, after the first steel plate 15, the second steel plate 16 and the third steel plate 17 of the column foot are respectively welded to the main supply pipe, the first steel plate 15, the second steel plate 16 and the third steel plate 17 of the column foot are connected by the first connecting steel bar 18 and the second connecting steel bar, so that the integrity of the column base steel box 8 is stronger, and self-compacting micro-expansive concrete is poured in the pouring cavity 10, the first connecting steel bar 18 and the second connecting steel bar form a mesh structure connected with the self-compacting micro-expansive concrete, thereby enhancing the connection stability between the column base steel box 8 and the self-compacting micro-expansive concrete, and the set welding nails 19 are connected with the self-compacting micro-expansive concrete to avoid the first steel plate 15, the second steel plate 16 and the third steel plate 17 of the column base and the self-compacting micro-expansive concrete.

[0040] In this embodiment, a casting cavity 10 is formed on the periphery of the column main pipe 2 by arranging a column base steel box 8, and the anti-buckling ability of the connection node position is strengthened by the first stiffening plate 501, the second stiffening plate 601, and the third stiffening plate 701. After the consolidating member 9 is cast in the casting cavity 10, the first flange 12 and the second flange 13 connecting the first column 3 and the second column 4 are wrapped therein to avoid rust while enhancing the connection stability of the first column 3 and the second column 4; the consolidating member 9 wraps the connection point between the column main pipe 2 and the main arch main pipe 1 to avoid the weld in the welding connection being exposed to the external environment and being susceptible to environmental influences, thereby improving the bearing capacity of the structure.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A consolidation connection structure of a steel tube concrete arch rib and an arch column, comprising a main arch main pipe (1) and a column main pipe (2); characterized in that: Also includes: The column main pipe (2) comprises a first column (3) welded to the main arch main pipe (1) and a second column (4) arranged on the first column (3); the first column (3) and the second column (4) are detachably connected; a first reinforcement member (5) is arranged between the first column (3) and the main arch main pipe (1); and a second reinforcement member (6) and a third reinforcement member (7) are respectively arranged on the adjacent ends of the first column (3) and the second column (4); The consolidation assembly comprises a column base steel box (8) arranged on a main arch main pipe (1) and a consolidation member (9) arranged in the column base steel box (8); a casting cavity (10) is arranged in the column base steel box (8); and a connecting member (11) is arranged on the inner wall of the casting cavity (10).

2. The consolidation connection structure of the steel tube concrete arch rib and the arch column according to claim 1 is characterized in that: The first reinforcement member (5) comprises a first stiffening plate (501); the first stiffening plate (501) is evenly arranged at one end of the first column (3) adjacent to the main arch main pipe (1), and the first stiffening plate (501) is fixedly connected to the main arch main pipe (1); the second reinforcement member (6) comprises a second stiffening plate (601); the third reinforcement member (7) comprises a third stiffening plate (701); the first column (3) and the second column (4) are respectively provided with a first flange (12) and a second flange (13); the second stiffening plate (601) and the third stiffening plate (701) are respectively fixedly connected to the first flange (12) and the second flange (13).

3. The consolidation connection structure of the steel tube concrete arch rib and the arch column according to claim 2 is characterized in that: The first flange (12) and the second flange (13) are located in the casting cavity (10).

4. The consolidation connection structure of the steel tube concrete arch rib and the arch column according to claim 3 is characterized in that: The column base steel box (8) comprises a first column base steel plate (15), a second column base steel plate (16) and two groups of third column base steel plates (17) arranged opposite to each other, wherein the two groups of third column base steel plates (17) are respectively connected to the first column base steel plate (15) and the second column base steel plate (16); the first column base steel plate (15), the second column base steel plate (16) and the two groups of third column base steel plates (17) are respectively fixedly connected to the main arch pipe (1).

5. The consolidation connection structure of the steel tube concrete arch rib and the arch column according to claim 4 is characterized in that: The connecting member (11) comprises a first connecting steel bar (18) arranged between a first steel plate (15) at a column foot and a second steel plate (16) at a column foot, and a second connecting steel bar arranged between two groups of third steel plates (17) at a column foot; welding studs (19) are respectively arranged on the inner walls of the first steel plate (15) at a column foot, the second steel plate (16) at a column foot, and the third steel plate (17) at a column foot.

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