Fabricated concrete-filled steel tube friction pendulum shock insulation column

Abstract

The invention discloses a fabricated concrete-filled steel tube friction pendulum shock insulation column which comprises a friction pendulum shock insulation support, shock insulation column bodies are arranged at the upper end and the lower end of the friction pendulum shock insulation support, the shock insulation column bodies are formed by pouring and prefabricating external steel tube confined concrete, and a supporting structure is coaxially arranged in an external steel tube; a plurality of connecting sleeves are arranged on the outer wall of the end, close to the friction pendulum shock insulation support, of the supporting structure in the circumferential direction at equal intervals. The ends, close to the friction pendulum shock insulation support, of the shock insulation columns are fixedly connected with positioning plates, the positioning plates are provided with through holes corresponding to the connecting sleeves, the friction pendulum shock insulation support is provided with a plurality of connecting assemblies, and the two ends of the friction pendulum shock insulation support are fixedly connected with the two shock insulation columns through the connecting assemblies. The construction speed of the shock insulation column is increased, the buttress is made of the steel pipe concrete, the bearing capacity is higher, ductility is better, construction is more convenient, and the defect that the pouring and curing quality of the buttress is affected due to the fact that reinforcing steel bars of a traditional reinforced concrete buttress are too dense and too many embedded parts are arranged is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of building seismic isolation, and in particular to an assembled steel tube concrete friction pendulum seismic isolation column. Background Art

[0002] Earthquake action is one of the most serious disasters faced by building structures, posing a serious threat to human life and property. The seismic isolation bearing has a simple structure and a clear principle, and is a safe and efficient seismic isolation element. The traditional friction pendulum seismic isolation bearing is generally composed of upper and lower seat plates, upper and lower sliding surfaces, and a spherical crown. The components are generally made of steel plates or cast steel parts.

[0003] Traditional piers are generally cast in situ. Due to the special stress state of the piers, the large number of steel bars and limited anchoring, casting is difficult. In addition, on-site casting and maintenance of piers are time-consuming, highly dependent on the environment, and it is difficult to ensure construction quality.

[0004] Therefore, it is urgent to provide a prefabricated steel tube concrete friction pendulum seismic isolation column to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a prefabricated steel tube concrete friction pendulum seismic isolation column to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides an assembled steel tube concrete friction pendulum seismic isolation column, including a friction pendulum seismic isolation bearing, wherein seismic isolation columns are arranged at both upper and lower ends of the friction pendulum seismic isolation bearing, and the seismic isolation column is prefabricated by pouring concrete constrained by an external steel tube, and a support structure is coaxially arranged inside the external steel tube, and a plurality of connecting sleeves are arranged at equal intervals along the circumferential direction on the outer wall of one end of the support structure close to the friction pendulum seismic isolation bearing; a positioning plate is fixedly connected to one end of the seismic isolation column close to the friction pendulum seismic isolation bearing, and a through hole corresponding to the connecting sleeve is opened on the positioning plate, and a plurality of connecting components are arranged on the friction pendulum seismic isolation bearing, and both ends of the friction pendulum seismic isolation bearing are connected and fixed to the two seismic isolation columns through the connecting components.

[0007] Preferably, the length of the external steel pipe is equal to the length of the supporting structure, and the external steel pipe and the supporting structure are both fixedly connected with an embedded plate at one end close to the friction pendulum seismic isolation bearing, and the embedded plate is provided with a pouring hole for pouring concrete; the positioning plate is fixedly connected to a side of the embedded plate away from the supporting structure, and the embedded plate is provided with a hole corresponding to the connecting sleeve.

[0008] Preferably, the connecting assembly includes a connecting plate, which is a U-shaped structure, with threaded holes formed at both ends of the connecting plate, and connecting rods are threadedly connected to the threaded holes. The base plates at both ends of the friction pendulum seismic isolation bearing are connected and fixed via the connecting plate and the connecting rod, and the base plates at both ends of the friction pendulum seismic isolation bearing are respectively connected and fixed to the two seismic isolation columns via the connecting rods.

[0009] Preferably, the connecting rod includes a threaded section provided with a nut and a deformation section provided with a rigid spring-opening plate, a constraint sleeve is provided on the sliding sleeve of the deformation section, and the threaded section is threadedly connected to the friction pendulum seismic isolation support; the deformation section is inserted into the connecting sleeve; a step groove is provided on the inner wall of the connecting sleeve, and the deformation section is limitedly matched with the connecting sleeve through the step groove.

[0010] Preferably, the rigid pop-up plate is fixedly connected to one end of the connecting rod away from the nut, and after the rigid pop-up plate loses the constraint of the constraint sleeve, the inclination angle of the rigid pop-up plate relative to the central axis of the connecting rod is not less than 5 degrees.

[0011] Preferably, the rigid spring-opening plate is a metal plate.

[0012] Preferably, a plurality of support blocks are fixedly connected between the external steel pipe and the support structure.

[0013] Preferably, the support structure is one of an internal steel pipe or an internal steel section.

[0014] Preferably, one end of the seismic isolation column away from the friction pendulum seismic isolation support is fixedly connected to an end-bearing column foot.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] The assembled steel tube concrete friction pendulum seismic isolation column provided by the present invention has a seismic isolation column body that is prefabricated by pouring concrete constrained by an external steel tube, which solves the problems of more steel bars, limited anchoring and difficult pouring in the existing piers; by arranging a supporting structure inside the external steel tube, the supporting strength of the seismic isolation column can be increased, and it is helpful to position the connecting sleeve and maintain the accurate position of the connecting sleeve; when assembling, the friction pendulum seismic isolation bearing can be quickly installed on the seismic isolation column by cooperating with the connecting sleeve pre-buried in the seismic isolation column body and the connecting assembly, thereby solving the problems in the prior art that piers need to be poured on site, maintenance is time-consuming, the environment is highly dependent, and the construction quality is difficult to ensure; and the provision of the positioning plate can ensure the accurate installation position of the friction pendulum seismic isolation bearing, and avoid the occurrence of dislocation or tilt of the seismic isolation column. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the assembled steel tube concrete friction pendulum seismic isolation column of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the assembled steel tube concrete friction pendulum seismic isolation column of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the connecting rod of the present invention;

[0021] In the figure: 1. Friction pendulum isolation bearing; 2. Isolation column; 21. External steel pipe; 3. Support structure; 4. Connecting sleeve; 41. Step groove; 5. Positioning plate; 6. Embedded plate; 7. Connecting plate; 8. Connecting rod; 81. Nut; 82. Rigid spring-open plate; 83. Constraint sleeve; 9. Support block; 10. End-bearing column base. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] like Figures 1 to 3 As shown, the present invention provides an assembled steel tube concrete friction pendulum seismic isolation column, including a friction pendulum seismic isolation bearing 1, wherein seismic isolation columns 2 are arranged at both upper and lower ends of the friction pendulum seismic isolation bearing 1, and the seismic isolation column 2 is prefabricated by constraining concrete pouring with an external steel pipe 21, and a support structure 3 is coaxially arranged inside the external steel pipe 21, and a plurality of connecting sleeves 4 are arranged at equal intervals along the circumferential direction on the outer wall of one end of the support structure 3 close to the friction pendulum seismic isolation bearing 1; a positioning plate 5 is fixedly connected to one end of the seismic isolation column 2 close to the friction pendulum seismic isolation bearing 1, and a through hole corresponding to the connecting sleeve 4 is opened on the positioning plate 5, and a plurality of connecting components are arranged on the friction pendulum seismic isolation bearing 1, and both ends of the friction pendulum seismic isolation bearing 1 are connected and fixed to the two seismic isolation columns 2 through the connecting components.

[0024] The seismic isolation column 2 of the present invention is prefabricated, and the friction pendulum seismic isolation support 1 is a commercially available part. The specific model and size are selected according to the size of the designed assembled steel tube concrete friction pendulum seismic isolation column.

[0025] The seismic isolation column 2 of the present invention is prefabricated by concrete pouring constrained by an external steel pipe 21, which solves the problems of more steel bars, limited anchoring and difficult pouring in the existing piers; by arranging a supporting structure 3 inside the external steel pipe 21, the supporting strength of the seismic isolation column 2 can be increased, and it is helpful to position the connecting sleeve 4 and maintain the accurate position of the connecting sleeve 4; during assembly, the friction pendulum seismic isolation bearing 1 can be quickly installed on the seismic isolation column 2 by cooperating with the connecting assembly through the connecting sleeve 4 pre-buried in the seismic isolation column 2, thereby solving the problems in the prior art that piers need to be poured on site, maintenance is time-consuming, the environment is highly dependent, and the construction quality is difficult to ensure; and the setting of the positioning plate 5 can ensure the accurate installation position of the friction pendulum seismic isolation bearing 1, and avoid the occurrence of dislocation or tilt of the seismic isolation column.

[0026] A further optimization scheme is to prevent the poured concrete from splashing onto the positioning plate 5 and affecting the installation of the friction pendulum seismic isolation bearing 1 when prefabricating the seismic isolation column 2, the length of the external steel pipe 21 is equal to the length of the supporting structure 3, and the external steel pipe 21 and the supporting structure 3 are fixedly connected to one end of the friction pendulum seismic isolation bearing 1 with an embedded plate 6, and the embedded plate 6 is provided with a pouring hole for pouring concrete; the positioning plate 5 is fixedly connected to the side of the embedded plate 6 away from the supporting structure 3, and the embedded plate 6 is provided with a hole corresponding to the connecting sleeve 4.

[0027] By setting the embedded plate 6, the external steel pipe 21 and the supporting structure 3 can be connected as a whole, which can not only enhance the stability of the supporting structure 3, but also reduce the splashing of concrete during the pouring process. After the seismic isolation column 2 is cast and reaches the specified strength, the positioning plate 5 is installed through the embedded plate 6. The positioning plate 5 can be leveled again during the installation process to avoid changes in the level of the positioning plate 5 caused by concrete pouring, thereby ensuring the overall quality of the seismic isolation column.

[0028] A further optimized solution is provided. To facilitate the installation of the friction pendulum isolation bearing 1 on the isolation column 2, the connecting assembly includes a connecting plate 7. The connecting plate 7 is a U-shaped structure. Threaded holes are provided at both ends of the connecting plate 7. Connecting rods 8 are threadedly connected to the threaded holes. The bottom plates at both ends of the friction pendulum isolation bearing 1 are connected and fixed by the connecting plates 7 and the connecting rods 8, and the bottom plates at both ends of the friction pendulum isolation bearing 1 are respectively connected and fixed to the two isolation columns 2 by the connecting rods 8.

[0029] When in use, connecting rods 8 are installed on both ends of the connecting plate 7 in advance, and then the connecting rods 8 are passed through the bottom plates at both ends of the friction pendulum seismic isolation bearing 1 and connected to the connecting sleeve 4 inside the seismic isolation column 2, so that the friction pendulum seismic isolation bearing 1 can be installed on the seismic isolation column 2.

[0030] A further optimized solution is that the connecting rod 8 includes a threaded section provided with a nut 81 and a deformation section provided with a rigid spring-opening plate 82; a constraint sleeve 83 is provided on the sliding sleeve of the deformation section, and the threaded section is threadedly connected to the friction pendulum seismic isolation bearing 1; the deformation section is inserted into the connecting sleeve 4; a stepped groove 41 is provided on the inner wall of the connecting sleeve 4, and the deformation section is limitedly matched with the connecting sleeve 4 through the stepped groove 41.

[0031] During assembly, the connecting rod 8 is installed on the friction pendulum seismic isolation bearing 1 through the connecting plate 7. The setting of the connecting plate 7 can avoid the upper and lower ends of the friction pendulum seismic isolation bearing 1 from being misaligned. At the same time, through the setting of the deformation section of the connecting rod 8, during the process of inserting the connecting rod 8 into the connecting sleeve 4, the positioning plate 5 can be used to push the constraint sleeve 83 to move in the direction of the nut 81. When the connecting rod 8 enters the front half of the connecting sleeve 4, the deformation section loses the constraint effect of the constraint sleeve 83. At this time, the deformation section is constrained by the connecting sleeve 4. When the deformation section enters the step groove 41, the deformation section loses the constraint, and the rigid spring-opening plate 82 springs open, thereby supporting it in the step groove 41, thereby achieving the locking effect of the connecting rod 8 on the friction pendulum seismic isolation bearing 1.

[0032] A further optimization scheme is to ensure that the rigid pop-up plate 82 can be normally engaged in the connecting sleeve 4 after popping up, and the rigid pop-up plate 82 is fixedly connected to the end of the connecting rod 8 away from the nut 81. After the rigid pop-up plate 82 loses the constraint of the constraint sleeve 83, its inclination angle relative to the central axis of the connecting rod 8 is not less than 5 degrees.

[0033] According to a further optimized solution, the rigid spring-opening plate 82 is a metal plate.

[0034] To further optimize the solution, in order to ensure the stability between the external steel pipe 21 and the supporting structure 3 , a plurality of supporting blocks 9 are fixedly connected between the external steel pipe 21 and the supporting structure 3 .

[0035] According to a further optimization scheme, the support structure 3 is one of an internal steel pipe or an internal steel section.

[0036] According to a further optimized solution, one end of the seismic isolation column 2 away from the friction pendulum seismic isolation support 1 is fixedly connected with an end-bearing column foot 10 .

[0037] The assembled steel tube concrete friction pendulum seismic isolation column provided by the present invention solves the shortcomings of the existing piers, which are time-consuming, labor-intensive and difficult to ensure quality, and improves the construction speed of the seismic isolation column. The piers are made of steel tube concrete, which has higher bearing capacity, better ductility and more convenient construction, and avoids the shortcomings of traditional reinforced concrete piers, such as too dense steel bars and too many embedded parts, which affect the casting and maintenance quality of the piers.

[0038] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembled steel tube concrete friction pendulum seismic isolation column, comprising a friction pendulum seismic isolation support (1), characterized in that: Seismic isolation columns (2) are provided at both upper and lower ends of the friction pendulum seismic isolation support (1); the seismic isolation column (2) is prefabricated by confining concrete casting with an external steel pipe (21); a support structure (3) is coaxially arranged inside the external steel pipe (21); a plurality of connecting sleeves (4) are arranged at equal intervals along the circumferential direction on the outer wall of one end of the support structure (3) close to the friction pendulum seismic isolation support (1); a positioning plate (5) is fixedly connected to one end of the seismic isolation column (2) close to the friction pendulum seismic isolation support (1); a through hole corresponding to the connecting sleeve (4) is opened on the positioning plate (5); a plurality of connecting components are arranged on the friction pendulum seismic isolation support (1); and both ends of the friction pendulum seismic isolation support (1) are connected and fixed to the two seismic isolation columns (2) through the connecting components.

2. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 1 is characterized in that: The length of the external steel pipe (21) is equal to the length of the support structure (3); the external steel pipe (21) and the end of the support structure (3) close to the friction pendulum isolation support (1) are both fixedly connected to an embedded plate (6); the embedded plate (6) is provided with a pouring hole for pouring concrete; the positioning plate (5) is fixedly connected to a side of the embedded plate (6) away from the support structure (3); the embedded plate (6) is provided with a hole corresponding to the connecting sleeve (4).

3. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 1 is characterized in that: The connection assembly comprises a connection plate (7), the connection plate (7) is a U-shaped structure, threaded holes are provided at both ends of the connection plate (7), a connecting rod (8) is threadedly connected in the threaded hole, the bottom plates at both ends of the friction pendulum seismic isolation support (1) are connected and fixed via the connection plate (7) and the connecting rod (8), and the bottom plates at both ends of the friction pendulum seismic isolation support (1) are respectively connected and fixed to the two seismic isolation columns (2) via the connecting rod (8).

4. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 3 is characterized in that: The connecting rod (8) comprises a threaded section provided with a nut (81) and a deformation section provided with a rigid spring-opening plate (82); a restraining sleeve (83) is slidably sleeved on the deformation section, and the threaded section is threadedly connected to the friction pendulum isolation support (1); the deformation section is inserted into the connecting sleeve (4); a stepped groove (41) is provided on the inner wall of the connecting sleeve (4), and the deformation section is limitedly matched with the connecting sleeve (4) through the stepped groove (41).

5. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 4 is characterized in that: The rigid spring-opening plate (82) is fixedly connected to one end of the connecting rod (8) away from the nut (81), and after the rigid spring-opening plate (82) loses the constraint of the constraint sleeve (83), its inclination angle relative to the central axis of the connecting rod (8) is not less than 5 degrees.

6. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 5, characterized in that: The rigid spring-opening plate (82) is a metal plate.

7. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 1, characterized in that: A plurality of support blocks (9) are fixedly connected between the external steel pipe (21) and the support structure (3).

8. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 1, characterized in that: The supporting structure (3) is one of an internal steel pipe or an internal steel section.

9. The assembled steel tube concrete friction pendulum seismic isolation column according to claim 1, characterized in that: One end of the seismic isolation column (2) away from the friction pendulum seismic isolation support (1) is fixedly connected to an end-bearing column foot (10).

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