Connecting structure of PVC-FRP pipe concrete column and foundation

Abstract

The invention discloses a connecting structure of a PVC-FRP pipe concrete column and a foundation, and relates to the technical field of constructions.The connecting structure comprises a sliding sleeve and dampers, the inner wall of the sliding sleeve is matched with the outer wall of the PVC-FRP pipe concrete column, the sliding sleeve is arranged on the PVC-FRP pipe concrete column in a sleeving mode, the multiple dampers are distributed in the circumferential direction of the sliding sleeve, and the dampers are connected with the sliding sleeve. One end of the damper is hinged with the sliding sleeve, and the other end is hinged with the foundation; the connecting structure is simple, the good anti-seismic property is achieved, the damper can have the good energy dissipation capacity under the earthquake load, meanwhile, the PVC-FRP pipe concrete column can be protected, damage of the external load is relieved, and the bearing capacity and ductility of the PVC-FRP pipe concrete column are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a connection structure between a PVC-FRP tube concrete column and a foundation. Background Art

[0002] PVC-FRP tube reinforced concrete columns are a new type of composite structure. PVC-FRP tubes are prefabricated by wrapping FRP strips around PVC tubes at regular intervals. A steel cage is placed inside the tubes, and concrete is poured to form PVC-FRP tube reinforced concrete columns. Compared with ordinary reinforced concrete columns, the core concrete in the PVC-FRP tube concrete column is constrained and protected by the PVC-FRP tubes, giving it superior bearing capacity while protecting it from erosion in harsh environments, thereby achieving good durability.

[0003] At present, the connection between PVC-FRP tube reinforced concrete columns and foundations mostly adopts conventional embedded connection, that is, by reserving column holes on the foundation, the PVC-FRP tube reinforced concrete columns are directly inserted into the column holes. Although this method can complete the connection between the PVC-FRP tube reinforced concrete columns and the foundation, the overall PVC-FRP tube reinforced concrete columns have no shock-absorbing mechanism, resulting in poor energy consumption and seismic resistance, and poor durability.

[0004] Therefore, people are in urgent need of a connection structure between a PVC-FRP tube concrete column and a foundation that has good energy dissipation and earthquake resistance and improves the durability of the PVC-FRP tube concrete column. Summary of the Invention

[0005] The purpose of the present invention is to provide a connection structure between a PVC-FRP tube concrete column and a foundation to solve the problems existing in the above-mentioned prior art. Through the design of a sliding sleeve and a damper, the energy dissipation and seismic resistance effect are improved, and the PVC-FRP tube reinforced concrete column has better durability.

[0006] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention provides a connection structure between a PVC-FRP tube concrete column and a foundation, comprising a sliding sleeve and a damper, wherein the inner wall of the sliding sleeve matches the outer wall of the PVC-FRP tube concrete column, the sliding sleeve is sleeved on the PVC-FRP tube concrete column, a plurality of the dampers are distributed along the circumference of the sliding sleeve, one end of the damper is hinged to the sliding sleeve, and the other end is hinged to the foundation.

[0007] Preferably, the connection structure between the PVC-FRP tube concrete column and the foundation also includes a bottom connecting piece fixedly connected to the foundation, the bottom connecting piece is provided with a groove matching the PVC-FRP tube concrete column, and the bottom of the PVC-FRP tube concrete column is inserted into the groove.

[0008] Preferably, the bottom connecting member includes a mounting tube and a bottom plate, the mounting tube is fixedly arranged on the bottom plate, the mounting tube and the bottom plate are surrounded to form the groove, and the bottom plate is fixedly connected to the foundation.

[0009] Preferably, the mounting cylinder is a steel mounting cylinder, and the base plate is a steel base plate.

[0010] Preferably, a reinforcing web is provided between the mounting tube and the base plate.

[0011] Preferably, the inner wall of the mounting cylinder is provided with a lubricating layer.

[0012] Preferably, an anchor floor is hingedly provided at one end of the damper away from the sliding sleeve, and the anchor floor is fixedly connected to the foundation.

[0013] Preferably, the anchor floor is a steel anchor floor.

[0014] Preferably, the inner wall of the sliding sleeve is provided with a lubricating layer.

[0015] Preferably, the sliding sleeve is a steel sliding sleeve.

[0016] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0017] When vibration is transmitted to the PVC-FRP tube concrete column, causing the PVC-FRP tube concrete column to vibrate, the damper can consume the displacement and force caused by the vibration of the PVC-FRP tube concrete column, thereby achieving a good energy-consuming and earthquake-resistant effect. At the same time, it can reduce the damage to the PVC-FRP tube concrete column caused by external loads, effectively protecting the integrity of the PVC-FRP tube concrete column, not only preventing the collapse of the building and improving its bearing capacity, but also making the PVC-FRP tube reinforced concrete column have better durability; at the same time, the overall structure is simple and reliable, which can effectively improve the connection speed and quality, reduce the construction difficulty, reduce the amount of on-site work, speed up the construction efficiency, shorten the construction period, have good economy, and a small construction area, effectively reducing the impact of construction on the city. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the connection structure between the PVC-FRP tube concrete column and the foundation in an embodiment of the present invention;

[0020] Figure 2 This is a schematic top view of the connection structure between the PVC-FRP tube concrete column and the foundation in an embodiment of the present invention;

[0021] Among them, 1. PVC-FRP tube concrete column; 2. Foundation; 3. Sliding sleeve; 4. Damper; 5. Mounting tube; 6. Base plate; 7. Reinforced web; 8. Anchor floor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide a connection structure between a PVC-FRP tube concrete column and a foundation to solve the problems existing in the prior art. Through the design of a sliding sleeve and a damper, the energy dissipation and earthquake resistance effect are improved, and the PVC-FRP tube reinforced concrete column has better durability.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Please refer to Figure 1 、 Figure 2As shown, a connection structure of a PVC-FRP tube concrete column 1 and a foundation 2 is provided, comprising a sliding sleeve 3 and a damper 4. The inner wall of the sliding sleeve 3 matches the outer wall of the PVC-FRP tube concrete column 1. The sliding sleeve 3 is sleeved on the PVC-FRP tube concrete column 1. A plurality of dampers 4 are distributed along the circumference of the sliding sleeve 3. One end of the damper 4 is hinged to the sliding sleeve 3, and the other end is hinged to the foundation 2. When the vibration of the earthquake load or other vibration load is transmitted to the PVC-FRP tube concrete column 1, causing the PVC-FRP tube concrete column 1 to vibrate, the damper 4 can consume the displacement caused by the vibration of the PVC-FRP tube concrete column 1. The PVC-FRP pipe concrete column 1 is easy to install and can withstand loads as well as displacement, which has a good energy dissipation and earthquake resistance effect. At the same time, it can reduce the damage of external loads to the PVC-FRP pipe concrete column 1, effectively protect the integrity of the PVC-FRP pipe concrete column 1, not only prevent the collapse of the building, improve its bearing capacity, but also make the PVC-FRP pipe reinforced concrete column have better durability; at the same time, the overall structure is simple and reliable, which can effectively improve the connection speed and quality, reduce the construction difficulty, reduce the amount of on-site work, speed up construction efficiency, shorten the construction period, and have good economy. At the same time, the damper 4 has a small demand for the construction working surface, which makes the construction working surface of the connection structure small, effectively reducing the impact on the city during construction.

[0026] The damper 4 can be a viscous damper or a gas spring support rod.

[0027] In this embodiment, four dampers 4 are evenly arranged on the sliding sleeve 3. In other embodiments, three, five or more dampers 4 may also be evenly arranged.

[0028] The connection structure between the PVC-FRP tube concrete column 1 and the foundation 2 also includes a bottom connecting piece fixedly connected to the foundation 2. The bottom connecting piece is provided with a groove matching the PVC-FRP tube concrete column 1. The bottom of the PVC-FRP tube concrete column 1 is inserted into the groove. The insertion connection method can further increase the connection speed and improve construction efficiency.

[0029] In this embodiment, the bottom connecting member includes a mounting tube 5 and a base plate 6. The mounting tube 5 is fixedly arranged on the base plate 6. The mounting tube 5 and the base plate 6 are surrounded to form a groove. The base plate 6 and the foundation 2 are fixedly connected by high-strength bolts. The mounting tube 5 and the base plate 6 can be arranged as one piece or separately. When they are arranged separately, the welding of the two can be completed during the actual construction process. In other embodiments, the bottom connecting member can be a block structure embedded in the foundation 2, on which a groove is provided for inserting the PVC-FRP pipe concrete column 1.

[0030] A reinforcing web 7 is arranged between the mounting tube 5 and the base plate 6. The reinforcing web 7 has a triangular plate structure and is arranged vertically. One side is welded to the mounting tube 5 and the other side is welded to the base plate 6 to improve the structural strength. The number of reinforcing webs 7 can be one or more. In this embodiment, four reinforcing webs 7 are arranged in the circumference of the mounting tube 5, and the reinforcing webs 7 correspond to the damper 4 above and below.

[0031] An anchor floor 8 is hingedly provided at one end of the damper 4 away from the sliding sleeve 3. The anchor floor 8 is fixedly connected to the foundation 2 by high-strength bolts. During actual construction, the high-strength bolts can be directly connected. Compared with hingedly connecting the damper 4 to the foundation 2 during construction, it can save construction time and improve construction efficiency.

[0032] Both ends of the damper 4 can be hinged to the sliding sleeve 3 and the anchor floor 8 respectively through a steel ball joint or other hinged manner.

[0033] The inner walls of the mounting tube 5 and the sliding sleeve 3 are both provided with a lubricating layer. The lubricating layer can be formed by applying lubricating oil or lubricating paint. By setting the lubricating layer, the friction between the PVC-FRP tube concrete column 1 and the PVC-FRP tube concrete column 1 can be reduced, thereby improving the protection effect of the PVC-FRP tube concrete column 1 and preventing friction from damaging the outer wall of the PVC-FRP tube concrete column 1.

[0034] The mounting tube 5, the sliding sleeve 3, the base plate 6 and the anchor floor 8 are all made of steel structures to ensure their service life and structural strength.

[0035] In actual use, the prefabricated PVC-FRP tube concrete column 1, sliding sleeve 3, damper 4, installation tube 5, base plate 6 and reinforced web 7 are transported to the construction area (the installation tube 5, base plate 6 and reinforced web 7 can be connected in the factory, and the damper 4, sliding sleeve 3 and anchor plate 8 can also be connected in the factory). The bolt holes on the base plate 6 are aligned with the reserved bolt holes on the foundation 2 and connected using high-strength bolts. The sliding sleeve 3 is installed on the prefabricated PVC-FRP tube concrete column 1, and the PVC-F The RP tube concrete column 1 is inserted into the installation tube 5, and the bolt holes on the anchor floor 8 are aligned with the reserved bolt holes on the foundation 2 and connected using high-strength bolts. At this time, the assembly is completed; if the damper 4, sliding sleeve 3 and anchor floor 8 are transported separately to the construction area, it is necessary to insert the PVC-FRP tube concrete column 1 into the installation tube 5, then hinge the two ends of the damper 4 to the sliding sleeve 3 and the anchor floor 8, and then align the bolt holes on the anchor floor 8 with the reserved bolt holes on the foundation 2 and connect them using high-strength bolts to complete the assembly work.

[0036] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0037] It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0038] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A connection structure between a PVC-FRP tube concrete column and a foundation, characterized in that: It includes a sliding sleeve and a damper. The inner wall of the sliding sleeve matches the outer wall of the PVC-FRP tube concrete column. The sliding sleeve is sleeved on the PVC-FRP tube concrete column. A plurality of dampers are distributed along the circumference of the sliding sleeve. One end of the damper is hinged to the sliding sleeve, and the other end is hinged to the foundation.

2. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 1, characterized in that: The connection structure between the PVC-FRP tube concrete column and the foundation also includes a bottom connecting piece fixedly connected to the foundation. The bottom connecting piece is provided with a groove matching the PVC-FRP tube concrete column, and the bottom of the PVC-FRP tube concrete column is inserted into the groove.

3. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 2, characterized in that: The bottom connecting member includes a mounting tube and a bottom plate. The mounting tube is fixedly arranged on the bottom plate. The mounting tube and the bottom plate are surrounded to form the groove. The bottom plate is fixedly connected to the foundation.

4. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 3, characterized in that: The installation cylinder is a steel installation cylinder, and the bottom plate is a steel bottom plate.

5. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 3, characterized in that: A reinforcing web is provided between the mounting tube and the bottom plate.

6. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 3, characterized in that: The inner wall of the mounting cylinder is provided with a lubricating layer.

7. The connection structure between a PVC-FRP tube concrete column and a foundation according to claim 1, characterized in that: An anchor floor is hingedly provided at one end of the damper away from the sliding sleeve, and the anchor floor is fixedly connected to the foundation.

8. The connection structure between the PVC-FRP tube concrete column and the foundation according to claim 7, characterized in that: The anchor floor is a steel anchor floor.

9. The connection structure between a PVC-FRP tube concrete column and a foundation according to claim 1, characterized in that: The inner wall of the sliding sleeve is provided with a lubricating layer.

10. The connection structure between a PVC-FRP tube concrete column and a foundation according to claim 1, characterized in that: The sliding sleeve is a steel sliding sleeve.

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