Prefabricated reinforced stainless steel pipe sea sand concrete column base

Abstract

The utility model provides a kind of assembled reinforced stainless steel pipe sea sand concrete column foot, including concrete foundation, stainless steel pipe, L-shaped connecting piece, T-shaped connecting piece, stainless steel reinforcement cage.Stainless steel reinforcement cage hoists in position after, stainless steel reinforcement cage is connected by reinforcing sleeve with stainless steel connecting reinforcement, stainless steel pipe hoists after being fixed by through bolt and L-shaped connecting piece and T-shaped connecting piece, and stainless steel pipe pours in and forms integral steel pipe concrete column foot structure with sea sand concrete, all steel components can be realized factory accurate prefabrication, only need to carry out hoisting, bolt fastening and reinforcing sleeve connection etc. Dry operation in field, substantially reduce the workload of wet operation such as field welding, formwork and maintenance, significantly improve construction efficiency and quality controllability.

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering construction technology, specifically relating to a prefabricated reinforced stainless steel pipe sea sand concrete column base. Background Technology

[0002] Stainless steel tube concrete structures combine the advantages of both ordinary steel tube concrete and stainless steel materials. They possess not only high load-bearing capacity, good plasticity and toughness, and convenient construction, but also excellent durability and aesthetic appeal, making them promising for applications in marine environments, corrosive locations, and projects with high aesthetic requirements. Furthermore, by incorporating stainless steel longitudinal reinforcement and stirrups within the stainless steel tubes to form reinforced stainless steel tube concrete components, the overall performance of the structure can be further enhanced. The concrete effectively protects the internal steel reinforcement skeleton, giving these composite columns excellent fire resistance; with proper design, additional fireproofing may even be unnecessary, demonstrating significant technical and economic value.

[0003] As a critical force-transfer node between the superstructure and the foundation, the column base plays a vital role in transmitting axial force, shear force, and bending moment from the bottom column. Its performance directly affects the overall structural bearing capacity, stiffness, and seismic safety. Therefore, for this novel composite column with reinforced stainless steel tubing and sea sand concrete, developing a column base connection method that is structurally sound, easy to construct, reliably transmits force, and exhibits excellent overall performance is crucial for promoting the engineering application of this structural system. Currently, traditional steel-concrete composite column bases often rely heavily on on-site welding and formwork operations, resulting in long construction cycles, poor quality control, and high labor intensity, making it difficult to meet the demands of modern industrialized and prefabricated construction. Therefore, there is an urgent need for a new column base structure that can achieve rapid assembly, reduce on-site wet work, and possesses good corrosion resistance. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated reinforced stainless steel pipe sea sand concrete column base, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated reinforced stainless steel pipe concrete column base, comprising a concrete foundation, a stainless steel pipe, L-shaped connectors, T-shaped connectors, and a stainless steel reinforcing cage. Anchor bolts and stainless steel connecting bars are pre-embedded in the concrete foundation. The bottom surfaces of the L-shaped and T-shaped connectors have first bolt holes, and the sidewall surfaces of the L-shaped and T-shaped connectors have second bolt holes. Anchor bolts pass through the first bolt holes to connect and fix the L-shaped and T-shaped connectors. Stainless steel connecting bars pass through fourth bolt holes to connect and fix the T-shaped connectors. After the stainless steel reinforcing cage is hoisted into place, it is connected to the stainless steel connecting bars via reinforcing sleeves. After hoisting, the stainless steel pipe is fixed to the L-shaped and T-shaped connectors via through bolts. Seawater-based concrete is poured inside the stainless steel pipe to form an integral steel pipe concrete column base structure.

[0006] As a preferred technical solution of this utility model, the stainless steel reinforcing cage is formed by binding stainless steel longitudinal bars and stainless steel stirrups to form a core load-bearing skeleton. The stainless steel longitudinal bars are arranged in a rectangular shape, and the stainless steel stirrups are rectangular and bound to the stainless steel longitudinal bars. The bottom of the stainless steel longitudinal bars is provided with threads and connected to the top of the reinforcing bar sleeve.

[0007] As a preferred technical solution of this utility model, the stainless steel pipe has a rectangular cross-section, and a third bolt hole is provided on the side wall of the stainless steel pipe. The vertical ends of the L-shaped connector and the T-shaped connector are attached to the surface of the stainless steel pipe and aligned with the second bolt hole and the third bolt hole. The through bolt passes through the second bolt hole and the third bolt hole to fix the L-shaped connector and the T-shaped connector to the stainless steel pipe to form an external constraint.

[0008] As a preferred technical solution of this utility model, the first bolt hole is an oblong bolt hole, which effectively absorbs construction and installation errors, while the second, third, and fourth bolt holes are circular bolt holes.

[0009] As a preferred technical solution of this utility model, the sides of the L-shaped connector and the T-shaped connector are provided with stiffening ribs. The stiffening ribs 10 are connected to the L-shaped connector 3 and the T-shaped connector 4 by double-sided fillet welds, which significantly improves their rigidity and load-bearing capacity.

[0010] As a preferred technical solution of this utility model, the L-shaped connector and the T-shaped connector can be made of stainless steel as a whole, or they can be made of carbon steel and subjected to anti-corrosion treatment, depending on the actual engineering needs and cost considerations.

[0011] As a preferred technical solution of this utility model, the stainless steel connecting steel bar has a bent section at the bottom to effectively improve the anchoring effect, and the stainless steel connecting steel bar has a thread at the top, and the top of the stainless steel connecting steel bar is connected to the bottom of the steel bar sleeve.

[0012] As a preferred technical solution of this utility model, the concrete inside the steel pipe is seawater sand concrete, which uses natural sea sand as fine aggregate and natural seawater for mixing, fully embodying the green concept of sustainable resource utilization.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: all steel components (stainless steel pipes, rebar cages, L-shaped connectors, and T-shaped connectors) can be precisely prefabricated in the factory. On-site work only requires dry operations such as hoisting, bolt tightening, and rebar sleeve connection, which greatly reduces the workload of wet operations such as on-site welding, formwork, and curing, significantly improving construction efficiency and quality controllability. This aligns with the development direction of building industrialization. Through the rigid connection formed by the L-shaped and T-shaped connectors and the through bolts, the rebar sleeves achieve continuous force transmission of the rebar, forming a reliable force flow transmission path. This ensures the rigidity and strength of the column base joint, giving it good integrity and seismic performance. It effectively utilizes abundant sea sand and seawater resources to replace traditional river sand and freshwater, effectively alleviating pressure on natural resources and reducing the environmental load during the production of building materials, which is in line with the concept of green and sustainable engineering construction. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the L-shaped connector in this utility model;

[0019] Figure 5 This is a schematic diagram of the T-shaped connector in this utility model.

[0020] In the diagram: 1. Concrete foundation; 2. Stainless steel pipe; 3. L-shaped connector; 4. T-shaped connector; 5. Stainless steel longitudinal reinforcement; 6. Stainless steel stirrup; 7. Rebar sleeve; 8. Anchor bolt; 9. Stainless steel connecting reinforcement; 10. Stiffening rib; 11. Through bolt; 12. First bolt hole; 13. Second bolt hole; 14. Third bolt hole; 15. Fourth bolt hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides the following technical solution: a prefabricated reinforced stainless steel pipe concrete column base, including a concrete foundation 1, a stainless steel pipe 2, an L-shaped connector 3, a T-shaped connector 4, and a stainless steel reinforcing cage. Anchor bolts 8 and stainless steel connecting bars 9 are pre-embedded in the concrete foundation 1. The bottom surface of the L-shaped connector 3 and the T-shaped connector 4 is provided with a first bolt hole 12, the side wall surface of the L-shaped connector 3 and the T-shaped connector 4 is provided with a second bolt hole 13, and the bottom surface of the T-shaped connector 4 is provided with a fourth bolt hole 15. The anchor bolts 8 pass through the first bolt hole 12 to connect and fix with the L-shaped connector 3 and the T-shaped connector 4. The stainless steel connecting longitudinal bars 9 pass through the fourth bolt hole 15 to connect with the T-shaped connector 4. After the stainless steel reinforcing cage is hoisted into place, the stainless steel reinforcing cage is connected to the stainless steel connecting bars 9 through a reinforcing sleeve 7. After the stainless steel pipe 2 is hoisted, it is fixed to the L-shaped connector 3 and the T-shaped connector 4 through a through bolt 11. Seawater concrete is poured into the stainless steel pipe 2 to form an integral steel pipe concrete column base structure.

[0023] In this embodiment, the stainless steel reinforcing cage is formed by binding stainless steel longitudinal bars 5 and stainless steel stirrups 6 to form the core load-bearing skeleton. The stainless steel longitudinal bars 5 are arranged in a rectangular shape, and the stainless steel stirrups 6 are rectangular and bound to the stainless steel longitudinal bars 5. The bottom of the stainless steel longitudinal bars 5 is threaded and connected to the top of the reinforcing sleeve 7. The top of the stainless steel connecting reinforcing bars 9 is threaded, and the top of the stainless steel connecting reinforcing bars 9 is connected to the bottom of the reinforcing sleeve 7.

[0024] Specifically, after the stainless steel longitudinal bars 5 and stainless steel stirrups 6 are tied together to form a stainless steel reinforcement cage, the stainless steel longitudinal bars 5 and stainless steel connecting bars 9 are connected by steel bar sleeves 7. The steel bar sleeves 7 can achieve rapid and precise connection with the stainless steel longitudinal bars 5 and stainless steel connecting bars 9.

[0025] In this embodiment, the stainless steel pipe 2 has a rectangular cross-section and a third bolt hole 14 is provided on the side wall of the stainless steel pipe 2. The vertical ends of the L-shaped connector 3 and the T-shaped connector 4 are attached to the surface of the stainless steel pipe 2 and aligned with the second bolt hole 13 and the third bolt hole 14. The through bolt 11 passes through the second bolt hole 13 and the third bolt hole 14 to fix the L-shaped connector 3 and the T-shaped connector 4 to the stainless steel pipe 2 to form an external constraint.

[0026] Specifically, the stainless steel pipe 2 can be formed from seamless steel pipe or welded steel pipe, and its side wall is pre-set with a third bolt hole 14. The third bolt hole 14 is matched with the second bolt hole 13 on the side wall of the L-shaped connector 3 and the T-shaped connector 4, so as to facilitate assembly with the L-shaped connector 3 and the T-shaped connector 4 by means of through bolts 11.

[0027] In this embodiment, the first bolt hole 12 is an oblong bolt hole, and the second bolt hole 13, the third bolt hole 14 and the fourth bolt hole 15 are circular bolt holes.

[0028] Specifically, since the first bolt hole 12 is an oblong bolt hole, it effectively absorbs the error caused by the construction and installation of the anchor bolts 8, while the second bolt hole 13, the third bolt hole 14, and the fourth bolt hole 15 are circular bolt holes, thus ensuring a tight connection.

[0029] In this embodiment, stiffening ribs 10 are provided on the sides of both the L-shaped connector 3 and the T-shaped connector 4. The stiffening ribs 10 are connected to the L-shaped connector 3 and the T-shaped connector 4 by double-sided fillet welds.

[0030] Specifically, the stiffening ribs 10 can significantly improve the stiffness and load-bearing capacity of the L-shaped connector 3 and the T-shaped connector 4.

[0031] In this embodiment, the stainless steel connecting steel bar 9 has a bent section at the bottom.

[0032] Specifically, the set bending section can effectively improve the anchorage effect between the stainless steel connecting steel bar 9 and the concrete foundation 1.

[0033] Working principle: During construction, anchor bolts 8 and stainless steel connecting longitudinal bars 9 are first pre-embedded in the concrete foundation 1. The anchor bolts 8 are passed through the bolt holes 12 on the L-shaped connector 3 and the T-shaped connector 4, and the stainless steel connecting longitudinal bars 9 are passed through the bolt holes 15 on the T-shaped connector 4, thus achieving reliable fixation between the connectors and the foundation. After the stainless steel reinforcement cage is hoisted into place, its stainless steel longitudinal bars 5 are reliably connected to the stainless steel connecting bars 9 pre-embedded in the concrete foundation 1 through the steel sleeve 7. After the stainless steel pipe 2 is hoisted, it is fastened to the L-shaped connector 3 and the T-shaped connector 4 through the through bolts 11 to form external constraints. Finally, seawater sand concrete is poured into the stainless steel pipe 2 to form... The structure forms a complete reinforced steel pipe concrete column base structure. All steel components (stainless steel pipe 2, steel cage, L-shaped connector 3 and T-shaped connector 4) can be precisely prefabricated in the factory. On-site work only requires dry operations such as hoisting, tightening of through bolts 11 and connection of steel sleeves 7. This significantly reduces the amount of wet work such as on-site welding, formwork and curing, and significantly improves construction efficiency and quality control. The rigid connection formed by L-shaped connectors 3 and T-shaped connectors 4 and through bolts 11, and the continuous force transmission of steel through steel sleeves 7, together form a reliable force transmission path, ensuring the rigidity and strength of the column base node, and giving it good integrity and seismic performance.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated reinforced stainless steel pipe sea sand concrete column base, comprising a concrete foundation (1), a stainless steel pipe (2), an L-shaped connector (3), a T-shaped connector (4), and a stainless steel reinforcing cage, characterized in that: Anchor bolts (8) and stainless steel connecting bars (9) are pre-embedded in the concrete foundation (1). The bottom surfaces of the L-shaped connector (3) and T-shaped connector (4) are provided with first bolt holes (12). The side surfaces of the L-shaped connector (3) and T-shaped connector (4) are provided with second bolt holes (13). The bottom surface of the T-shaped connector (4) is provided with fourth bolt holes (15). The anchor bolts (8) pass through the first bolt holes (12) to connect and fix the L-shaped connector (3) and T-shaped connector (4). The stainless steel connecting bars (9) pass through the fourth bolt holes (15) to connect the T-shaped connector (4). The stainless steel cage is connected to the stainless steel connecting bars (9) through the steel sleeve (7). After the stainless steel pipe (2) is hoisted, it is fixed to the L-shaped connector (3) and T-shaped connector (4) through the through bolts (11). Seawater sand concrete is poured into the stainless steel pipe (2) to form an integral steel pipe concrete column base structure.

2. The prefabricated reinforced stainless steel pipe sea sand concrete column base according to claim 1, characterized in that: The stainless steel reinforcement cage is formed by binding stainless steel longitudinal bars (5) and stainless steel stirrups (6). The stainless steel longitudinal bars (5) are arranged in a rectangular shape, and the stainless steel stirrups (6) are rectangular and bound to the stainless steel longitudinal bars (5). The bottom of the stainless steel longitudinal bars (5) is threaded and connected to the top of the steel sleeve (7).

3. The prefabricated reinforced stainless steel pipe sea sand concrete column base according to claim 1, characterized in that: The stainless steel pipe (2) has a rectangular cross section. The side wall of the stainless steel pipe (2) is provided with a third bolt hole (14). The vertical ends of the L-shaped connector (3) and the T-shaped connector (4) are attached to the surface of the stainless steel pipe and aligned with the second bolt hole (13) and the third bolt hole (14). The through bolt (11) passes through the second bolt hole (13) and the third bolt hole (14) to fix the L-shaped connector (3) and the T-shaped connector (4) to the stainless steel pipe (2).

4. The prefabricated reinforced stainless steel pipe sea sand concrete column base according to claim 1, characterized in that: The first bolt hole (12) is an oblong bolt hole, and the second bolt hole (13), the third bolt hole (14) and the fourth bolt hole (15) are circular bolt holes.

5. The prefabricated reinforced stainless steel pipe sea sand concrete column base according to claim 1, characterized in that: The sides of both the L-shaped connector (3) and the T-shaped connector (4) are provided with stiffening ribs (10).

6. The prefabricated reinforced stainless steel pipe sea sand concrete column base according to claim 1, characterized in that: The stainless steel connecting bar (9) has a bent section at the bottom and a thread at the top. The top of the stainless steel connecting bar (9) is connected to the bottom of the bar sleeve (7).

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