Combined steel pipe concrete support

Abstract

The utility model relates to the related technical field of concrete filled steel tube supports, and discloses a combined concrete filled steel tube support which comprises a prefabricated concrete base prefabricated in a ground foundation pit, a steel tube support and a cast-in-place concrete base. The reinforcing steel pipe support is fixedly installed on the prefabricated concrete base through a lower installation positioning disc and expansion bolts, a plurality of reinforcing limiting rods are arranged on the outer wall of the reinforcing steel pipe support in a staggered mode, and an upper installation positioning disc is fixed to the installation position of the steel pipe support and the reinforcing steel pipe support. Reinforcing notches are formed in the steel pipe support and the reinforcing steel pipe support, concrete columns are poured in the reinforcing notches, the steel pipe support and the reinforcing steel pipe support, and the steel pipe support is sleeved with a set of reinforcing limiting rings. The bearing capacity of the concrete filled steel tube support in use can be better improved, and the stability is better improved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe concrete supports, specifically to a combined steel pipe concrete support. Background Technology

[0002] Concrete-filled steel pipe (CPC) supports are modern structural components consisting of concrete filling a steel pipe shell. The concrete is subjected to triaxial compression by means of the steel pipe shell, which gives the sandwich concrete higher compressive strength and resistance to deformation. The inner concrete and the steel pipe shell share the axial pressure. They are used in high-rise buildings, arch bridges, highway overpasses, subway stations, etc.

[0003] The load-bearing capacity of current steel-concrete composite supports is greatly affected by the structure, especially since it is difficult to achieve a large load-bearing capacity by relying solely on the constraint force of a single steel pipe. In order to better increase the load-bearing capacity of steel-concrete composite supports and improve the stability of buildings, this technical solution improves the existing steel-concrete composite support structure and installation structure, so as to better increase the load-bearing capacity of steel-concrete composite supports and improve the stability of buildings. Utility Model Content

[0004] The technical solution adopted by this utility model is as follows: a combined steel pipe concrete support, including a precast concrete base, a steel pipe support and a cast-in-place concrete seat, which are precast in the ground foundation pit. The bottom of the steel pipe support is fixed with a reinforcing steel pipe support, and the reinforcing steel pipe support is installed and fixed on the precast concrete base by a lower mounting positioning plate and expansion bolts.

[0005] The outer wall of the reinforced steel pipe support is staggered with several reinforcing limiting rods. An upper mounting positioning plate is fixed at the installation position of the steel pipe support and the reinforced steel pipe support. Reinforcing slots are opened inside the steel pipe support and the reinforced steel pipe support, and concrete columns are poured into the reinforcing slots and the reinforced steel pipe support. A set of reinforcing limiting rings is fitted on the steel pipe support. A limiting plate is installed below the reinforcing limiting rings through a reinforcing support rod, and a spiral locking device is fixed at the bottom of the limiting plate. The cast-in-place concrete seat is poured on top of the precast concrete base and located in the ground foundation pit. The cast-in-place concrete seat wraps around the reinforced steel pipe support, the reinforcing limiting rods and the spiral locking device and is located at the bottom of the upper mounting positioning plate.

[0006] In a preferred embodiment, the mounting points of the reinforcing steel pipe support and the lower mounting positioning plate are annularly fixed with a lower reinforcing lug for reinforcing the reinforcing steel pipe support, and the lower reinforcing lug has a triangular structure.

[0007] In a preferred embodiment, the upper mounting positioning plate is fixed to the solidified cast-in-place concrete base by a second expansion bolt.

[0008] In a preferred embodiment, the upper mounting positioning plate and the steel pipe support mounting location are fixed in a ring shape with an upper reinforcing lug for reinforcing the steel pipe support.

[0009] In a preferred embodiment, the reinforcing limiting ring is adapted to the steel pipe support, and the reinforcing limiting rings are welded together.

[0010] In a preferred embodiment, the limiting disc is attached to the top of the cast-in-place concrete base after solidification, and the limiting disc can also be fixed to the cast-in-place concrete base by expansion bolts.

[0011] In a preferred embodiment, the spiral locking device is assembled from a support column and spiral blades, with the spiral blades fixed to the support column and locked in the cast-in-place concrete seat.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: this technical solution improves the existing steel pipe concrete support installation structure, making it easier to increase the load-bearing capacity and stability of the steel pipe concrete support.

[0013] In this invention, the lower mounting positioning plate is first installed on a precast concrete base in the ground pit using expansion bolts. Then, a reinforcing limiting ring is fitted under the steel pipe support, and a set of reinforcing limiting rings is welded and fixed to the steel pipe support. At this time, a cast-in-place concrete seat is poured into the ground pit, so that the cast-in-place concrete seat wraps around the reinforcing steel pipe support, the reinforcing limiting rod, and the spiral locking device. The top of the cast-in-place concrete seat is located below the upper mounting positioning plate and the limiting plate. Finally, the upper mounting positioning plate and the limiting plate are fixed to the solidified cast-in-place concrete seat using expansion bolts. By improving the installation structure of the steel pipe concrete support, the load-bearing capacity and stability of the steel pipe concrete support can be better increased. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first state structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second state structure of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure of region A in the middle;

[0017] Figure 4 This is a schematic diagram of the installation structure of the steel pipe support and concrete column of this utility model;

[0018] Figure 5 This is a schematic diagram of the reinforced limiting ring and spiral locking device of this utility model.

[0019] The markings in the diagram are: 1-Precast concrete base; 2-Steel pipe support; 3-Reinforced steel pipe support; 4-Lower mounting positioning plate; 5-Lower reinforcement ear; 6-Reinforcement limiting rod; 7-Cast-in-place concrete seat; 8-Upper mounting positioning plate; 9-Upper reinforcement ear; 10-Reinforcement groove; 11-Concrete column; 12-Reinforcement limiting ring; 13-Reinforcement support rod; 14-Limiting plate; 15-Screw locking device. Detailed Implementation

[0020] 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 in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] The following will combine Figures 1-5 The combined steel pipe concrete support of the present invention will be described in detail.

[0022] refer to Figure 1-3 As shown, the combined steel pipe concrete support includes a precast concrete base 1, a steel pipe support 2, and a cast-in-place concrete base 7, all precast in the ground foundation pit. A reinforcing steel pipe support 3 is fixed to the bottom of the steel pipe support 2, and the reinforcing steel pipe support 3 is installed and fixed on the precast concrete base 1 by a lower mounting positioning plate 4 and expansion bolts. The installation point of the reinforcing steel pipe support 3 and the lower mounting positioning plate 4 is fixed with a lower reinforcing ear 5 for reinforcing the reinforcing steel pipe support 3 in a ring shape, and the lower reinforcing ear 5 has a triangular structure.

[0023] refer to Figure 2 , 4As shown in Figure 5, several reinforcing limiting rods 6 are staggered on the outer wall of the reinforced steel pipe support 3. An upper mounting positioning plate 8 is fixed at the installation location of the steel pipe support 2 and the reinforced steel pipe support 3. The upper mounting positioning plate 8 is fixed in the solidified cast-in-place concrete seat 7 by a second expansion bolt. An upper reinforcing ear 9 for reinforcing the steel pipe support 2 is fixed in a ring above the installation location of the upper mounting positioning plate 8 and the steel pipe support 2. Reinforcing grooves 10 are opened inside the steel pipe support 2 and the reinforced steel pipe support 3, and concrete columns 11 are poured into the reinforcing grooves 10 and the steel pipe support 2 and the reinforced steel pipe support 3. A set of reinforcing limiting rings 12 are fitted onto the steel pipe support 2, and the reinforcing limiting rings 12 are compatible with the steel pipe support 2. The reinforcing limiting rings 12 are welded together. A limiting plate 14 is installed below the reinforcing limiting rings 12 via a reinforcing support rod 13. The limiting plate 14 fits against the top of the cast-in-place concrete base 7 after solidification. The limiting plate 14 can also be fixed to the cast-in-place concrete base 7 with expansion bolts. A spiral locking device 15 is fixed at the bottom of the limiting plate 14. The spiral locking device 15 is assembled from a support column and spiral blades. The spiral blades are fixed on the support column and locked in the cast-in-place concrete base 7. The cast-in-place concrete base 7 is poured on top of the precast concrete base 1 and located in the ground pit. The cast-in-place concrete base 7 is wrapped around the reinforcing steel pipe support 3, the reinforcing limiting rod 6 and the spiral locking device 15 and is located at the bottom of the upper mounting positioning plate 8.

[0024] Advantages of this application: This technical solution improves the existing steel pipe concrete support installation structure, making it easier to increase the load-bearing capacity and stability of the steel pipe concrete support.

[0025] Working principle: First, the lower mounting positioning plate 4 is installed on the precast concrete base 1 in the ground pit using expansion bolts. Then, the reinforcing limiting ring 12 is fitted under the steel pipe support 2, and a set of reinforcing limiting rings 12 is welded and fixed to the steel pipe support 2. At this time, cast-in-place concrete seat 7 is poured into the ground pit, so that the cast-in-place concrete seat 7 wraps around the reinforcing steel pipe support 3, the reinforcing limiting rod 6, and the spiral locking device 15. The top of the cast-in-place concrete seat 7 is located below the upper mounting positioning plate 8 and the limiting plate 14. Finally, the upper mounting positioning plate 8 and the limiting plate 14 are fixed to the solidified cast-in-place concrete seat 7 using expansion bolts. By improving the installation structure of the steel pipe concrete support, it is easier to increase the load-bearing capacity and stability of the steel pipe concrete support.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A combined steel-concrete composite support, comprising a precast concrete base (1) prefabricated in a ground foundation pit, a steel pipe support (2), and a cast-in-place concrete seat (7), characterized in that: The bottom of the steel pipe support (2) is fixed with a reinforcing steel pipe support (3), and the reinforcing steel pipe support (3) is fixed to the precast concrete base (1) by a lower mounting positioning plate (4) and expansion bolts. Several reinforcing limiting rods (6) are staggered on the outer wall of the reinforcing steel pipe support (3). An upper mounting positioning plate (8) is fixed at the installation position of the steel pipe support (2) and the reinforcing steel pipe support (3). The interior of the steel pipe support (2) and the reinforcing steel pipe support (3) is provided with a reinforcing groove (10), and the reinforcing groove (10) is connected to the steel pipe support (2) and the reinforcing steel pipe support. A concrete column (11) is poured in the frame (3). A set of reinforcing limiting rings (12) is fitted on the steel pipe support (2). A limiting plate (14) is installed below the reinforcing limiting ring (12) through a reinforcing support rod (13). A spiral locking device (15) is fixed at the bottom of the limiting plate (14). The cast-in-place concrete seat (7) is poured on the top of the precast concrete base (1) and located in the ground pit. The cast-in-place concrete seat (7) is wrapped around the reinforcing steel pipe support (3), the reinforcing limiting rod (6) and the spiral locking device (15) and located at the bottom of the upper mounting positioning plate (8).

2. The combined steel pipe concrete support as described in claim 1, characterized in that: The reinforced steel pipe support (3) and the lower mounting positioning plate (4) are fixed in a ring shape with a lower reinforcing ear (5) for reinforcing the reinforced steel pipe support (3), and the lower reinforcing ear (5) has a triangular structure.

3. The combined steel pipe concrete support as described in claim 1, characterized in that: The upper mounting positioning plate (8) is fixed in the solidified cast-in-place concrete base (7) by the second expansion bolt.

4. The combined steel pipe concrete support as described in claim 3, characterized in that: The upper mounting positioning plate (8) and the steel pipe support (2) are fixed in a ring shape above the mounting location with an upper reinforcing ear (9) for reinforcing the steel pipe support (2).

5. The combined steel pipe concrete support as described in claim 1, characterized in that: The reinforcing limiting ring (12) is adapted to the steel pipe support (2), and the reinforcing limiting rings (12) are welded together.

6. The combined steel pipe concrete support as described in claim 1, characterized in that: The limiting plate (14) is attached to the top of the cast-in-place concrete base (7) after solidification, and the limiting plate (14) can also be fixed to the cast-in-place concrete base (7) by expansion bolts.

7. The combined steel pipe concrete support as described in claim 1, characterized in that: The spiral locking device (15) is assembled from a support column and a spiral blade. The spiral blade is fixed on the support column and locked in the cast-in-place concrete seat (7).

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