Concrete-filled steel tube combined support for T-shaped intersection of roadway

Abstract

The utility model relates to the technical field of concrete filled steel tube combined supports, and discloses a concrete filled steel tube combined support for a T-shaped intersection of a roadway, which comprises a first support, a positioning groove is arranged in the first support, a second support is attached to the upper surface of the first support, and a positioning block is fixedly connected to the lower surface of the second support. The outer wall of the positioning block is slidably connected to the interior of the positioning groove, a sliding block is slidably connected to the interior of the first support, and the outer wall of the sliding block is slidably connected to the interior of the second support. According to the utility model, the problems that the bracket is difficult to mount or poor in supporting effect because the bracket cannot completely adapt to roadway top plates or side walls with different heights and cannot meet the requirement of complex shapes of T-shaped intersections when being used are solved, and the purposes of combining the brackets according to the heights, reducing the construction cost and the like are achieved. The supporting device can better adapt to roadway sections of different heights and angles, and more accurate supporting is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel tube concrete combined brackets, in particular to a steel tube concrete combined bracket for a T-shaped intersection of a lane. Background Art

[0002] The tunnel steel tube concrete support is a support structure widely used in underground projects such as tunnels and subways. It is mainly composed of steel pipes and concrete, and has the advantages of high strength, high rigidity, and convenient construction. In the T-junction, due to its special geometric shape and complex stress state, a combined support is required to meet the support requirements. The tunnel at the T-junction may be subject to forces from multiple directions, such as groundwater pressure, soil pressure, etc. The combined support can disperse and transmit these complex forces through reasonable design and layout, thereby ensuring the safety and stability of the tunnel.

[0003] In the traditional tunnel T-junction, steel tube concrete composite supports are used to adapt to its special geometric shape and complex stress conditions. This composite support is composed of multiple steel tube concrete supports combined according to a certain rule and order to form a stable support system. When using it, firstly, according to the actual size and stress conditions of the T-junction, the composite support is reasonably designed and laid out to ensure that the support can withstand forces from multiple directions, such as groundwater pressure, soil pressure, etc., and effectively disperse and transmit these forces, thereby ensuring the safety and stability of the tunnel. Secondly, according to the shape and size of the T-junction, the composite support is appropriately adjusted to meet the space requirements.

[0004] The above-mentioned traditional steel tube concrete supports for T-junctions in tunnels are usually customized for specific tunnel sections. However, due to the unique geometric shape of the T-junction, a combination of supports of different heights is often required. As a result, the supports cannot fully adapt to tunnel roofs or side walls of different heights in actual use, thus affecting the support effect and failing to meet the requirements of the complex shape of the T-junction, making the support difficult to install or the support effect poor. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a steel tube concrete composite bracket for a T-junction of a lane, aiming to improve the problem that the traditional steel tube concrete bracket for a T-junction of a lane cannot fully adapt to the lane roof or side walls of different heights when used, thereby affecting the support effect, and cannot meet the requirements of the complex shape of the T-junction, making the bracket difficult to install or the support effect poor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel tube concrete composite bracket for a T-intersection of a lane, comprising a bracket one, a positioning groove is provided inside the bracket one, a bracket two is fitted on the upper surface of the bracket one, a positioning block is fixedly connected to the lower surface of the bracket two, the outer wall of the positioning block is slidably connected to the inside of the positioning groove, a slider is slidably connected to the inside of the bracket one, the outer wall of the slider is slidably connected to the inside of the bracket two, an arc sleeve is fixedly connected to the outer wall of the slider, a fixing bolt one is provided inside the arc sleeve, the outer wall of the fixing bolt one is threadedly connected to the inside of the positioning block, a connecting assembly is provided on the outer wall of the arc sleeve, and the connecting assembly is used to fix the connection between multiple arc sleeves.

[0007] Furthermore, the connecting assembly comprises a limit block, an outer wall of the limit block is fixedly connected to an outer wall of the arc-shaped sleeve, and a second fixing bolt is arranged inside the limit block.

[0008] Furthermore, the top of the bracket 2 is fixedly connected to a base, the lower surface of the base is fixedly connected to a support 1, the outer wall of the support 1 is fixedly connected to the outer wall of the bracket 2, and the upper surface of the base is fixedly connected to a fixing ring.

[0009] Furthermore, a steel frame is provided inside the fixing ring, and a top plate is fixedly connected to the upper surface of the fixing ring.

[0010] Furthermore, the bottom of the bracket 1 is fixedly connected to a fixed base, and connecting bolts are arranged inside the fixed base.

[0011] Furthermore, a support 2 is fixedly connected to the upper surface of the fixed base, and an outer wall of the support 2 is fixedly connected to the outer wall of the bracket 1.

[0012] Furthermore, the outer walls of the bracket one and the bracket two are coated with an epoxy resin coating, the interiors of the bracket one and the bracket two are provided with a stainless steel layer, and the interiors of the bracket one and the bracket two are filled with concrete.

[0013] Furthermore, the interiors of the bracket 1 and the bracket 2 are both fixedly connected with a reinforcing rib 1 and a reinforcing rib 2, and the reinforcing rib 1 and the reinforcing rib 2 are arranged in a cross shape.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, firstly, the positioning block and the positioning groove are used to position the bracket one and the bracket two, and then the slider, the arc sleeve and the fixing bolt are used to connect and fix the bracket one and the bracket two, and finally the limit block and the fixing bolt are used to further fix the bracket one and the bracket two, thereby realizing the combination. This solves the problem that the bracket cannot fully adapt to the tunnel roof or side walls of different heights when used, cannot meet the requirements of the complex shape of the T-junction, and makes the bracket installation difficult or the supporting effect poor. This achieves the goal of combining the brackets according to the height, which can better adapt to the tunnel sections of different heights and angles, and provide more precise support.

[0016] 2. In the utility model, the supporting force of the bracket is firstly improved by cooperating with the fixed base and the bracket 2 at the bottom of the bracket 1 through the base, steel frame, fixing ring, support 1 and top plate at the top of the bracket 2, and then the supporting force is further improved by cooperating with the epoxy resin coating, stainless steel layer and concrete filling provided on the bracket, and finally the strength of the bracket is improved by cooperating with the reinforcing ribs 1 and 2, so as to achieve high-strength support, provide greater bearing capacity, adapt to the complex stress environment of the T-intersection, and ensure the stability and safety of the tunnel structure during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of a steel tube concrete composite support for a T-shaped intersection of a lane proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the positioning groove structure of a steel tube concrete composite support for a T-shaped intersection of a lane proposed by the utility model;

[0019] Figure 3 A schematic diagram of the internal structure of a steel tube concrete composite support for a T-shaped intersection of a lane proposed by the utility model;

[0020] Figure 4 A schematic diagram of the structure of one side of a steel tube concrete composite support for a T-shaped intersection of a lane proposed by the utility model;

[0021] Figure 5 The utility model provides a structural schematic diagram of a steel tube concrete composite support for a T-shaped intersection of a lane.

[0022] Legend:

[0023] 1. Bracket 1; 2. Bracket 2; 3. Positioning block; 4. Positioning groove; 5. Arc sleeve; 6. Fixing bolt 1; 7. Limit block; 8. Slider; 9. Fixing bolt 2; 10. Base; 11. Steel frame; 12. Fixing ring; 13. Support 1; 14. Top plate; 15. Fixed base; 16. Connecting bolt; 17. Support 2; 18. Epoxy resin coating; 19. Stainless steel layer; 20. Concrete filling; 21. Reinforcement rib 1; 22. Reinforcement rib 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a steel tube concrete composite bracket for a T-shaped intersection of a lane, comprising a bracket 1, a positioning groove 4 is opened inside the bracket 1, a bracket 2 2 is fitted on the upper surface of the bracket 1, a positioning block 3 is fixedly connected to the lower surface of the bracket 2, the outer wall of the positioning block 3 is slidably connected to the inside of the positioning groove 4, a slider 8 is slidably connected to the inside of the bracket 1, the outer wall of the slider 8 is slidably connected to the inside of the bracket 2, an arc sleeve 5 is fixedly connected to the outer wall of the slider 8, a fixing bolt 6 is arranged inside the arc sleeve 5, the outer wall of the fixing bolt 6 is threadedly connected to the inside of the positioning block 3, a connecting assembly is arranged on the outer wall of the arc sleeve 5, the connecting assembly is used to connect and fix multiple arc sleeves 5, the connecting assembly comprises a limit block 7, the outer wall of the limit block 7 is fixedly connected to the outer wall of the arc sleeve 5, and a fixing bolt 2 9 is arranged inside the limit block 7;

[0026] Specifically, first align the positioning block 3 at the bottom of the bracket 2 with the positioning groove 4 at the top of the bracket 1 and insert it to achieve preliminary positioning, then insert the four sliders 8 into the preset through holes inside the bracket 1 respectively, so that the front end of the slider 8 is inserted into the interior of the positioning block 3, and then the arc sleeve 5 is wrapped around the outer wall of the bracket 1, and then the fixing bolt 6 is driven. Due to the threaded relationship between the fixing bolt 6 and the positioning block 3, the front end of the fixing bolt 6 is moved to the interior of the positioning block 3 to achieve the connection between the bracket 1 and the positioning block 3. At the same time, when the arc sleeve 5 is attached to the outer wall of the bracket 1, the fixing bolt 2 9 is driven to rotate inside the limit block 7, thereby achieving the fixation between the four arc sleeves 5, thereby further improving the connection strength between the bracket 1 and the bracket 2 2, and achieving the effect of combining the bracket 1 and the bracket 2 2.

[0027] Reference Figure 1 , Figure 4 and Figure 5 The top of the bracket 2 is fixedly connected with a base 10, the lower surface of the base 10 is fixedly connected with a support 13, the outer wall of the support 13 is fixedly connected to the outer wall of the bracket 2, the upper surface of the base 10 is fixedly connected with a fixing ring 12, the interior of the fixing ring 12 is provided with a steel frame 11, the upper surface of the fixing ring 12 is fixedly connected with a top plate 14, the bottom of the bracket 1 is fixedly connected with a fixing base 15, the interior of the fixing base 15 is provided with a connecting bolt 16, the upper surface of the fixing base 15 is fixedly connected with a support 2 17, the outer wall of the support 2 17 is fixedly connected to the outer wall of the bracket 1, the outer walls of the bracket 1 and the bracket 2 are coated with an epoxy resin coating 18, the interiors of the bracket 1 and the bracket 2 are provided with a stainless steel layer 19, the interiors of the bracket 1 and the bracket 2 are provided with concrete filling 20, the interiors of the bracket 1 and the bracket 2 are fixedly connected with a reinforcing rib 1 21 and a reinforcing rib 2 22, and the reinforcing rib 1 21 and the reinforcing rib 2 22 are cross-arranged;

[0028] Specifically, the steel frame 11 is inserted into the interior of the fixing ring 12, and then supported by the top plate 14. At the same time, its strength is improved by the raised blocks on both sides of the top plate 14 and the support 13 under the base 10. Then, the bracket 1, the bracket 2 and the steel frame 11 are fixed by the connecting bolts 16 inside the fixed base 15 at the bottom. At the same time, the support 2 17 is used to further support and improve the supporting force of the combined bracket. The epoxy resin coating 18 coated on the outer walls of the bracket 1 and the bracket 2 and the concrete filling 20 and the stainless steel layer 19 arranged inside are used to further improve the supporting force of the combined bracket. Finally, the reinforcing ribs 1 21 and 22 arranged in a cross shape inside the bracket 1 and the bracket 2 are used to improve the strength of the combined bracket, thereby achieving a high-strength support effect.

[0029] Working principle: When it is necessary to use the steel tube concrete combined support for the T-intersection of the lane, first insert the positioning block 3 of the support 2 into the positioning groove 4 on the top of the support 1 to achieve preliminary positioning, and then insert the four sliders 8 into the through hole of the support 1, so that the front end of the slider 8 enters the inside of the positioning block 3, and ensure that the arc sleeve 5 is close to the outer wall of the support 1, then tighten the fixing bolt 6, and use its threaded connection with the positioning block 3 to make the front end of the fixing bolt 6 enter the inside of the positioning block 3, so as to fix the support 1 and the positioning block 3. At the same time, when the arc sleeve 5 is completely in contact with the outer wall of the support 1, rotate the fixing bolt 2 9 to make it rotate in the limit block 7, so as to fix the four arc sleeves 5, enhance the connection strength between the support 1 and the support 2, and realize the combination of the two;

[0030] In addition, the steel frame 11 is passed through the fixing ring 12 and supported on the top plate 14, and the raised blocks on both sides of the top plate 14 and the support 13 under the base 10 are used to increase the structural strength. The bracket 1, bracket 2 and steel frame 11 are fixed by connecting bolts 16 in the fixing base 15, and the support 2 17 is used to provide additional support to improve the supporting force of the overall bracket. The outer walls of the bracket 1 and the bracket 2 are coated with an epoxy resin coating 18, and the interior is filled with concrete filling 20 and a stainless steel layer 19 to further enhance the supporting force. Finally, the reinforcing ribs 1 21 and 22 cross-arranged inside the bracket 1 and the bracket 2 further enhance the strength of the combined bracket, thereby achieving a high-strength supporting effect.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 steel tube concrete composite support for a T-shaped intersection of a lane, comprising a support 1 (1), characterized in that: A positioning groove (4) is provided inside the bracket one (1), the upper surface of the bracket one (1) is fitted with the bracket two (2), the lower surface of the bracket two (2) is fixedly connected with a positioning block (3), the outer wall of the positioning block (3) is slidably connected to the inside of the positioning groove (4), the inside of the bracket one (1) is slidably connected with a slider (8), the outer wall of the slider (8) is slidably connected to the inside of the bracket two (2), the outer wall of the slider (8) is fixedly connected with an arc sleeve (5), the inside of the arc sleeve (5) is provided with a fixing bolt one (6), the outer wall of the fixing bolt one (6) is threadedly connected to the inside of the positioning block (3), and the outer wall of the arc sleeve (5) is provided with a connecting component, which is used to connect and fix a plurality of arc sleeves (5).

2. A steel tube concrete composite support for a T-junction of a lane according to claim 1, characterized in that: The connection assembly comprises a limit block (7), the outer wall of the limit block (7) is fixedly connected to the outer wall of the arc-shaped sleeve (5), and a second fixing bolt (9) is arranged inside the limit block (7).

3. The steel tube concrete composite support for a T-junction of a lane according to claim 1, characterized in that: The top of the bracket two (2) is fixedly connected to a base (10), the lower surface of the base (10) is fixedly connected to a support one (13), the outer wall of the support one (13) is fixedly connected to the outer wall of the bracket two (2), and the upper surface of the base (10) is fixedly connected to a fixing ring (12).

4. The steel tube concrete composite support for a T-junction of a lane according to claim 3, characterized in that: A steel frame (11) is arranged inside the fixing ring (12), and a top plate (14) is fixedly connected to the upper surface of the fixing ring (12).

5. The steel tube concrete composite support for a T-junction of a lane according to claim 4, characterized in that: The bottom of the bracket 1 (1) is fixedly connected to a fixed base (15), and a connecting bolt (16) is arranged inside the fixed base (15).

6. A steel tube concrete composite support for a T-junction of a lane according to claim 5, characterized in that: The upper surface of the fixed base (15) is fixedly connected to a support 2 (17), and the outer wall of the support 2 (17) is fixedly connected to the outer wall of the bracket 1 (1).

7. The steel tube concrete composite support for a T-junction of a lane according to claim 1, characterized in that: The outer walls of the bracket one (1) and the bracket two (2) are coated with an epoxy resin coating (18), the interiors of the bracket one (1) and the bracket two (2) are provided with a stainless steel layer (19), and the interiors of the bracket one (1) and the bracket two (2) are provided with concrete filling (20).

8. The steel tube concrete composite support for a T-junction of a lane according to claim 7, characterized in that: The interiors of the bracket 1 (1) and the bracket 2 (2) are both fixedly connected with a reinforcing rib 1 (21) and a reinforcing rib 2 (22), and the reinforcing rib 1 (21) and the reinforcing rib 2 (22) are arranged in a cross shape.

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