Connecting structure for FRP pipe concrete arch ring and foundation

Abstract

The utility model provides a connecting structure for an FRP pipe concrete arch ring and a foundation, which belongs to the technical field of buildings, and comprises an FRP pipe main body and a connecting assembly arranged on the outer wall of one end of the FRP pipe main body, the connecting assembly comprises a positioning shell, a connecting plate, a pressing plate, a cushion pad, a restraining pipe and a mounting bolt, the cushion pad is adhered to the edge of one end of the FRP pipe main body, and the restraining pipe is connected with the FRP pipe main body. The outer wall of the buffer pad is sleeved with the positioning shell. Through the connecting assembly, excellent durability can be achieved, the original mechanical property and stability of the connecting structure of the FRP pipe concrete arch ring and the foundation can be kept for a long time, so that the service life of the structure is greatly prolonged, the FRP pipe serves as an external constraint of concrete, the compression resistance and the ultimate bearing capacity of the concrete can be effectively improved, and the service life of the structure is prolonged. The high strength of the FRP material also ensures that the connecting structure is not easy to damage when bearing a large load, so that the connecting structure of the FRP pipe concrete arch ring and the foundation is more convenient and efficient in the construction process.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and in particular relates to a connection structure for an FRP tube concrete arch ring and a foundation. Background Art

[0002] FRP tube concrete arch ring is a kind of FRP (Fiber Reinforced Plastics (Fiber Reinforced Plastics) and concrete structural forms. FRP materials have been widely used in structural engineering due to their high strength, light weight, corrosion resistance, etc., while concrete is famous for its good compressive resistance and durability. Therefore, FRP tube concrete arch ring combines the advantages of these two materials, aiming to improve the bearing capacity and durability of the structure. In the FRP tube concrete arch ring, the FRP tube is usually used as an external constraint of concrete, providing strong lateral constraints to concrete, thereby improving the ultimate bearing capacity of the arch ring. At the same time, the chemical stability of FRP can effectively avoid the problem of easy corrosion of traditional steel tube concrete arch rings, and increase the service life of the structure. However, FRP materials also have some inherent limitations. For example, they are mostly flexible sheets, which may cause the stiffness of FRP-constrained concrete arches to be lower than that of steel tube concrete arches, and the single span is often smaller. In addition, FRP is a linear elastic material. When the structure is damaged, it is generally manifested as the FRP tube body being broken. Although this brittle failure mode can be improved to a certain extent by optimizing the ply, its improved ductility still cannot meet the increasingly high seismic performance requirements.

[0003] The connection structure between the FRP tube concrete arch ring and the foundation may have some shortcomings in some cases, which may affect the overall performance and stability of the structure. The following are some possible shortcomings: Insufficient connection strength: The connection between the FRP material (such as glass fiber reinforced plastic) and concrete may not be strong enough, especially when subjected to large loads or long-term stress. This may cause cracks or loosening at the connection, affecting the overall stability of the structure. Durability issues: FRP materials and concrete may experience performance degradation under long-term environmental effects, such as humidity, temperature changes, chemical corrosion, etc. This degradation may cause the strength and stiffness of the connection structure to decrease, thereby affecting the long-term service life of the structure. Difficult construction: The connection structure between the FRP tube concrete arch ring and the foundation may require special construction technology and equipment, which increases the difficulty and cost of construction. At the same time, due to the particularity of FRP materials, more stringent quality control and monitoring may be required during the construction process. Difficult maintenance: Due to the differences in the characteristics of FRP materials and concrete, special maintenance methods and materials may be required when the connection structure is damaged or needs repair, which increases the difficulty and cost of maintenance and may also affect the normal use of the structure. Utility Model Content

[0004] The utility model aims to provide a connection structure between an FRP tube concrete arch ring and a foundation, aiming to solve the problems raised by the background technology.

[0005] A connection structure for an FRP tube concrete arch ring and a foundation, comprising:

[0006] FRP pipe body;

[0007] A connecting component is arranged at the outer wall of one end of the FRP tube body, wherein: the connecting component includes a positioning shell, a connecting plate, a pressure plate, a buffer pad, a restraining tube and a mounting bolt, the buffer pad is bonded to the edge of one end of the FRP tube body, the positioning shell is sleeved on the outer wall of the buffer pad, the connecting plate is embedded in the inner wall of the positioning shell, the pressure plate is fixedly arranged on the outer wall of the connecting plate by means of mounting bolts, and the restraining tube is fixedly arranged on the inner wall of the positioning shell.

[0008] Furthermore, main steel bars are embedded in the inner wall of the FRP tube body, and bundled steel bars are wound around the outer wall of the main steel bars.

[0009] Furthermore, the main steel bars and the restraining tubes match each other.

[0010] Furthermore, a release port is provided on the inner wall of the positioning shell.

[0011] Furthermore, a mounting tube is embedded at the center of the inner wall of the positioning shell.

[0012] Furthermore, the inner wall opening of the connecting plate matches the restraining tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Excellent durability can be achieved through connecting components: FRP materials have excellent corrosion resistance, which means that even in harsh environments such as moisture and salt spray, the connection structure between the FRP tube concrete arch ring and the foundation can maintain its original mechanical properties and stability for a long time, thereby greatly extending the service life of the structure. High-strength bearing capacity: FRP tubes, as external constraints of concrete, can effectively improve the compressive properties and ultimate bearing capacity of concrete. At the same time, the high strength of FRP materials also ensures that the connection structure is not easily damaged when subjected to large loads. Good construction performance: FRP materials are lightweight and easy to process, making the connection structure between the FRP tube concrete arch ring and the foundation more convenient and efficient during the construction process. In addition, FRP materials can also be customized according to project needs to meet connection requirements of different shapes and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a partial half-section diagram of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the pressing plate of the utility model.

[0019] In the figure: 1. FRP pipe body; 2. main steel bars; 3. bundled steel bars; 4. positioning shell; 5. connecting plate; 6. pressure plate; 7. buffer pad; 8. restraining pipe; 9. mounting bolts; 401. release port; 402. mounting pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] See also Figure 1-3 , the technical solution provided by this embodiment is as follows:

[0024] A connection structure for an FRP tube concrete arch ring and a foundation, comprising:

[0025] FRP pipe body 1;

[0026] The connecting assembly is arranged at the outer wall of one end of the FRP tube body 1, wherein: the connecting assembly includes a positioning shell 4, a connecting plate 5, a pressure plate 6, a buffer pad 7, a restraining tube 8 and a mounting bolt 9, the buffer pad 7 is bonded to the edge of one end of the FRP tube body 1, the positioning shell 4 is sleeved on the outer wall of the buffer pad 7, the connecting plate 5 is embedded in the inner wall of the positioning shell 4, the pressure plate 6 is fixedly arranged on the outer wall of the connecting plate 5 by the mounting bolts 9, and the restraining tube 8 is fixedly arranged on the inner wall of the positioning shell 4.

[0027] In the specific embodiment of the utility model, excellent durability can be achieved through the connection components: FRP material has excellent corrosion resistance, which means that even in harsh environments such as moisture and salt spray, the connection structure of the FRP tube concrete arch ring and the foundation can maintain its original mechanical properties and stability for a long time, thereby greatly extending the service life of the structure. High-strength bearing capacity: FRP tubes, as external constraints of concrete, can effectively improve the compressive properties and ultimate bearing capacity of concrete. At the same time, the high strength of FRP materials also ensures that the connection structure is not easily damaged when subjected to large loads. Good construction performance: FRP materials are light and easy to process, making the connection structure of the FRP tube concrete arch ring and the foundation more convenient and efficient during the construction process. In addition, FRP materials can also It can be customized according to the needs of the project to meet the connection requirements of different shapes and sizes. First, the FRP tube body 1 is lifted, the buffer pad 7 is processed and bonded to the bottom edge of the FRP tube body 1, and the positioning shell 4 is sleeved on the outer wall of the buffer pad 7. The edge of the positioning shell 4 is melted and connected with the FRP tube body 1 by a welding device, and then the connecting plate 5 is embedded in the inner wall of the positioning shell 4 to ensure that the restraining pipe 8 is stably embedded in the interior of the connecting plate 5. Then, the pressing plate 6 and the mounting bolts 9 are used to squeeze and install the connecting plate 5 by the pressing plate 6, and then the connected main steel bars 2 and the bundling steel bars 3 are hoisted to the interior of the FRP tube body 1 to ensure that the bottom end of the main steel bars 2 is embedded in the interior of the restraining pipe 8. Then, concrete is injected into the interior of the FRP tube body 1, and the pouring and curing are completed before installation.

[0028] Specifically, the inner wall of the FRP pipe body 1 is embedded with main steel bars 2 , and the outer wall of the main steel bars 2 is wrapped with binding steel bars 3 .

[0029] In a specific embodiment of the present utility model, the outer wall of the main steel bar 2 is wrapped with the bundled steel bars 3, so that the structural strength can be ensured.

[0030] Specifically, the main reinforcement 2 and the restraining tube 8 match each other.

[0031] In a specific embodiment of the present invention, the main reinforcement 2 and the restraining tube 8 match each other, which can prevent the main reinforcement 2 and the binding reinforcement 3 from deforming and contacting the inner wall of the FRP tube body 1.

[0032] Specifically, a release port 401 is formed on the inner wall of the positioning shell 4 .

[0033] In a specific embodiment of the present utility model, a release port 401 is provided on the inner wall of the positioning shell 4 to ensure the injection of concrete.

[0034] Specifically, a mounting tube 402 is embedded at the center of the inner wall of the positioning shell 4 .

[0035] In a specific embodiment of the present invention, a mounting tube 402 is embedded at the center of the inner wall of the positioning shell 4 to facilitate the subsequent installation of other steel structures.

[0036] Specifically, the inner wall opening of the connecting plate 5 matches with the restraining tube 8 .

[0037] In a specific embodiment of the present utility model, the inner wall opening of the connecting plate 5 matches the restraining tube 8 to ensure the stability of the force bearing point.

[0038] Working principle:

[0039] Excellent durability can be achieved through connecting components: FRP materials have excellent corrosion resistance, which means that even in harsh environments such as moisture and salt spray, the connection structure between the FRP tube concrete arch ring and the foundation can maintain its original mechanical properties and stability for a long time, thereby greatly extending the service life of the structure. High-strength bearing capacity: FRP tubes, as external constraints of concrete, can effectively improve the compressive properties and ultimate bearing capacity of concrete. At the same time, the high strength of FRP materials also ensures that the connection structure is not easily damaged when subjected to large loads. Good construction performance: FRP materials are lightweight and easy to process, making the connection structure between the FRP tube concrete arch ring and the foundation more convenient and efficient during construction. In addition, FRP materials can also be customized according to project needs. To customize to meet the connection requirements of different shapes and sizes, first, the FRP tube body 1 is lifted, the buffer pad 7 is processed and bonded to the bottom edge of the FRP tube body 1, the positioning shell 4 is sleeved on the outer wall of the buffer pad 7, and the edge of the positioning shell 4 is fused and connected with the FRP tube body 1 by a welding device, and then the connecting plate 5 is embedded in the inner wall of the positioning shell 4 to ensure that the restraining pipe 8 is stably embedded in the interior of the connecting plate 5, and then the pressing plate 6 and the mounting bolts 9 are used to squeeze and install the connecting plate 5 by the pressing plate 6, and then the connected main steel bars 2 and the bundling steel bars 3 are lifted to the interior of the FRP tube body 1 to ensure that the bottom end of the main steel bars 2 is embedded in the interior of the restraining pipe 8, and then concrete is injected into the interior of the FRP tube body 1, and the pouring and curing are completed before installation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connection structure for an FRP tube concrete arch ring and a foundation, characterized in that: include, FRP pipe body (1); A connection assembly is arranged at the outer wall of one end of an FRP pipe body (1), wherein: the connection assembly comprises a positioning shell (4), a connecting plate (5), a pressure plate (6), a buffer pad (7), a restraining tube (8) and a mounting bolt (9); the buffer pad (7) is bonded to the edge of one end of the FRP pipe body (1); the positioning shell (4) is sleeved on the outer wall of the buffer pad (7); the connecting plate (5) is embedded in the inner wall of the positioning shell (4); the pressure plate (6) is fixedly arranged on the outer wall of the connecting plate (5) by means of the mounting bolt (9); and the restraining tube (8) is fixedly arranged on the inner wall of the positioning shell (4).

2. A connection structure for an FRP tube concrete arch ring and a foundation according to claim 1, characterized in that: The inner wall of the FRP pipe body (1) is embedded with main steel bars (2), and the outer wall of the main steel bars (2) is wrapped with binding steel bars (3).

3. A connection structure for an FRP tube concrete arch ring and a foundation according to claim 2, characterized in that: The main steel bars (2) and the restraining tubes (8) match each other.

4. A connection structure for an FRP tube concrete arch ring and a foundation according to claim 3, characterized in that: The inner wall of the positioning shell (4) is provided with a release opening (401).

5. A connection structure for an FRP tube concrete arch ring and a foundation according to claim 4, characterized in that: A mounting tube (402) is embedded at the center of the inner wall of the positioning shell (4).

6. A connection structure for an FRP tube concrete arch ring and a foundation according to claim 5, characterized in that: The inner wall opening of the connecting plate (5) matches the restraining tube (8).

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