Building seismic mitigation and isolation device

Abstract

The utility model belongs to the technical field of bridge construction, and relates to a building shock absorption and isolation device which comprises a first seat plate and a second seat plate which is parallel to the first seat plate and keeps a gap with the first seat plate, and further comprises a third seat plate which is rotationally connected with the first seat plate and the second seat plate respectively. And the tensile mechanism is arranged in the circumferential direction of the third seat plate, the tensile mechanism comprises a first supporting piece connected with the first seat plate and a second supporting piece connected with the second seat plate, and the first supporting piece and the second supporting piece can axially and / or radially move relative to each other. The utility model has the beneficial effects that the third seat plate and the tensile mechanism which are matched with each other are arranged, and a good tensile structure is established between the first seat plate and the second seat plate, so that the three seat plates can resist larger axial and radial tensile forces, the local stress concentration of the three seat plates is effectively avoided, the firmness and the stability of a building are ensured, and the service life of the building is prolonged. And the service life of the building is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a building shock-absorbing and isolating device. Background Art

[0002] At present, the commonly used seismic isolation bearings mainly include hyperbolic seismic isolation bearings, lead rubber bearings, high damping rubber bearings, metal damping seismic isolation bearings and viscous damping seismic isolation bearings, etc. The above-mentioned seismic isolation bearings have good adaptability to conventional bridge building structures and areas with conventional earthquake intensity, but their functions are slightly single in high-intensity earthquake areas.

[0003] In high-intensity earthquake zones, especially those with magnitude nine or above, bridge and building seismic isolation devices must not only have conventional seismic isolation functions, but also consider vertical earthquake effects, long-period earthquake effects, etc. However, most existing seismic isolation bearings have a single function and often do not have good torsional tensile resistance. In high-intensity earthquake zones, local stress concentration is prone to occur on the upper and lower base plates, making it difficult for existing seismic isolation bearings to meet the actual working conditions in high-intensity earthquake zones. Under actual working conditions in high-intensity earthquake zones, in addition to setting up seismic isolation bearings, it is often necessary to set up additional tensile structures in bridges or building structures to meet the actual working conditions in high-intensity earthquake zones. However, this also makes the seismic-resistant structural system too complicated, which brings many inconveniences to construction and design. Too many additional product structures also lead to problems such as poor economic efficiency and difficult maintenance of bridge construction. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the utility model provides a building seismic isolation device, which has good torsional force tensile resistance function, effectively avoids local stress concentration between the upper seat plate and the lower seat plate, ensures the firmness and stability of the building, and extends the service life of the building.

[0005] The technical solution adopted in the embodiment of the utility model is: a building seismic isolation device, comprising a first seat plate and a second seat plate arranged parallel to the first seat plate and maintaining a gap with the first seat plate, characterized in that: it also includes:

[0006] A third seat plate, rotatably connected to the first seat plate and the second seat plate respectively;

[0007] The tensile mechanism is arranged along the circumference of the third seat plate, and the tensile mechanism includes a first support member connected to the first seat plate and a second support member connected to the second seat plate. The first support member and the second support member can be axially and / or radially displaced with respect to each other.

[0008] Furthermore, a plurality of wheel axles are arranged along the circumference of the first support member, which are connected to support wheels via the wheel axles, and the support wheels are rotatably connected to the second support member.

[0009] Furthermore, the rotation axis of the support wheel is eccentrically arranged relative to the central axis of the first support member.

[0010] Furthermore, a bearing is provided between the supporting wheel and the wheel axle.

[0011] Furthermore, the end of the wheel axle away from the first support member is connected to the limiting plate through a fastener, and the side of the fastener away from the limiting plate abuts against the second support member.

[0012] Furthermore, the side surface of the limiting plate in contact with the wheel axle extends to the supporting wheel.

[0013] Furthermore, the second support member is a cylindrical structure with an opening toward the support wheel, and a plurality of slots are circumferentially provided therein and radially penetrate the side wall of the second support member. The support wheel is inserted into the slot and rotatably connected to the slot, and the side of the fastener away from the limiting plate abuts against the bottom of the slot.

[0014] Furthermore, the outer diameter of the support wheel is smaller than the radial width of the slot in which the support wheel is located.

[0015] Furthermore, the wheel surface of the supporting wheel is an arc surface, which can abut against one side wall of the slot and can roll on the side wall, thereby realizing axial and / or radial displacement between the first supporting member and the second supporting member.

[0016] Furthermore, a first spherical pair and a second spherical pair are respectively provided on both sides of the third seat plate, and the third seat plate is rotationally matched with the first seat plate through the first spherical pair, and is rotationally matched with the second seat plate through the second spherical pair.

[0017] The advantages and positive effects of the utility model are:

[0018] 1) A third seat plate and a tensile mechanism that cooperate with each other are arranged in the space enclosed by the first seat plate and the second seat plate, so that a good tensile structure can be established between the first seat plate and the second seat plate, so that it can resist greater axial and radial tensile forces, effectively avoiding local stress concentration in the three seat plates, ensuring the firmness and stability of the building, extending the service life of the building, and improving the quality of the construction project.

[0019] 2) The design has a simple structure and integrates the tensile mechanism into the shock-absorbing device. It can flexibly adapt to the complex and narrow building environment on site, facilitate construction and subsequent maintenance, and has certain economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front view of an embodiment provided by the utility model;

[0021] Figure 2 A top view of an embodiment provided by the utility model;

[0022] Figure 3 A cross-sectional view of the tensile mechanism of an embodiment provided by the utility model;

[0023] Figure 4 This is a three-dimensional diagram of the tensile mechanism of the embodiment provided by the utility model.

[0024] In the figure:

[0025] 1-first seat plate, 2-second seat plate, 3-third seat plate, 31-first spherical friction pair, 32-second spherical friction pair, 4-first support member, 41-support wheel, 42-axle, 43-bearing, 44-limiting plate, 45-fastener, 5-second support member, 51-slot. DETAILED DESCRIPTION

[0026] 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.

[0027] Reference Figure 1 As shown, the utility model provides a technical solution: a building seismic isolation device, comprising a first seat plate 1, a second seat plate 2, a third seat plate 3 and a tensile mechanism. The third seat plate 3 and the tensile mechanism are hidden in the space surrounded by the first seat plate 1 and the second seat plate 2, can be better embedded in the building, and can resist greater axial radial tensile forces, effectively avoiding local stress concentration in the upper and lower seat plates, ensuring the firmness and stability of the building, extending the service life of the building, and improving the quality of the construction project.

[0028] Specifically, the first seat plate 1 is arranged in parallel with the second seat plate 2, the first seat plate 1 is located above the second seat plate 2, the third seat plate 3 is arranged between the first seat plate 1 and the second seat plate 2, and the third seat plate 3 is circumferentially provided with a tensile mechanism connecting the first seat plate 1 and the second seat plate 2 respectively, so as to maintain a certain gap between the main bodies of the first seat plate 1 and the second seat plate 2. The bottom of the first seat plate 1 is provided with a first groove recessed toward one side of the main body, the top of the second seat plate 2 is provided with a second groove recessed toward one side of its main body, and both sides of the third seat plate 3 are embedded in the first groove and the second groove at the same time, and the upper and lower ends of the third seat plate 3 are both arc surfaces protruding outward, the upper end of the third seat plate 3 is rotationally matched with the first groove through the first spherical friction pair 31, and the lower end of the third seat plate 3 is rotationally matched with the second groove through the second spherical friction pair 32. Correspondingly, the bottom of the first groove is an arc shape that matches the first spherical friction pair 31, and the bottom of the second groove is an arc shape that matches the second spherical friction pair 32, so that there is a certain degree of mutual rotation between the first seat plate 1 and the third seat plate 3, and between the second seat plate 2 and the third seat plate 3. It cooperates with the anti-tensile mechanism to resist greater axial and radial tensile forces, effectively avoiding local stress concentration between the first seat plate 1 and the second seat plate 2 and the third seat plate 3, ensuring the firmness and stability of the building, extending the service life of the building, and improving the quality of the construction project.

[0029] like Figure 2 As shown, the tension mechanism is arranged along the circumference of the third seat plate 3. The upper end of the tension mechanism is connected to the first seat plate 1, and the lower end is connected to the second seat plate 2. Specifically, as Figure 3 As shown, the tensile mechanism includes a first support member 4 and a second support member 5. The first support member 4 is connected to the first seat plate 1, and the second support member 5 is connected to the second seat plate 2. The first support member 4 and the second support member 5 can be axially and / or radially displaced relative to each other.

[0030] Among them, Figure 3 As shown, the first support member 4 is provided with a wheel axle 42 extending toward the second support member 5, and a support wheel 41 is provided on the wheel axle 42. The rotation axis of the support wheel 41 is eccentrically arranged relative to the central axis of the first support member 4, and the rotation axis of the support wheel 41 coincides with the center line of the wheel axle 42 where it is located. The support wheel 41 is arranged at a position close to the edge of the first support member 4. Figure 4 As shown, a slot 51 is provided on the side wall of the second support member 5 toward the second seat plate, and the slots 51 are distributed along the circumference of the second support member 5. The support wheel 41 can extend into the slot 51 along the axial direction, and the diameter of the support wheel 41 is smaller than the width of the slot 51. When the first seat plate 1 or the second seat plate 2 is subjected to a torsional force, the support wheel 41 can abut against one of the two side walls of the slot 51, and roll with the abutting side wall in the radial direction of the second support member 5, thereby reducing the concentrated stress between the first seat plate 1, the second seat plate 2 and the third seat plate 3, which is safer.

[0031] In this embodiment, the first support member 4 is a plate-like structure, and three axles 42 are arranged along the circumference of the first support member 4, and the three support wheels 41 are respectively rotatably mounted on the three axles 42. The second support member 5 is a cylindrical structure, and its opening faces the first support member 4. Correspondingly, three slots 51 are opened on the side wall of the cylindrical structure, and the slots 51 penetrate the side wall in the radial direction, and the slot openings face the support wheels 41 respectively, and the side wall of the slots 51 is a plane.

[0032] The wheel surface of the support wheel 41 is an arc surface, which can be a spherical surface or an ellipsoidal surface, and is not specifically limited. When the first seat plate 1 or the second seat plate 2 is subjected to a torsional force, the support wheel 41 can abut against one of the side walls of the slot 51 and can roll on the side wall. In the direction from the bottom of the slot 51 to the slot opening, a certain distance is maintained between the two side walls of the slot 51, so that the support wheel 41 can be easily inserted into the slot 51 along the axial direction.

[0033] The axle 42 is provided with a bearing 43, and the support wheel 41 is provided on the axle 42 via the bearing 43. Figure 3 As shown, a limit plate 44 is provided at the end of the axle 41 away from the first support plate 4, and the limit plate 44 is fixed to the end of the axle 42 by a fastener 45, and the support wheel 41 is located inside the limit plate 44. The fastener 45 is a bolt, and its top is pressed against the bottom of the slot 51, and the bottom of the limit plate 44 extends to the support wheel 41 on both sides, providing a stable rotation condition for the rotation of the support wheel 41. When the first seat plate 1 or the second seat plate 2 is subjected to a torsional force, the support wheel 41 can rotate on the axle 42 and abut against one of the side walls of the slot 51, and roll on the side wall, thereby bearing part of the torsional stress, reducing the torsional stress between the first seat plate 1, the second seat plate 2 and the third seat plate 3, so that the first seat plate 1 and the second seat plate 2 can resist a larger axial radial tensile force, effectively avoiding the local stress concentration of the first seat plate 1 and the second seat plate 2, ensuring the firmness and stability of the building, extending the service life of the building, and improving the quality of the construction project.

[0034] When in use, the above-mentioned device is embedded in a building. Since the tensile mechanism is wrapped in the space enclosed by the first seat plate 1 and the second seat plate 2, the overall footprint is small, and it can adapt to the complex and narrow building environment at the construction site, which is convenient for design, construction and subsequent maintenance, and has certain economy and practicality.

[0035] The advantages and positive effects of the utility model are:

[0036] 1) A third seat plate and a tensile mechanism that cooperate with each other are arranged in the space enclosed by the first seat plate and the second seat plate, so that a good tensile structure can be established between the first seat plate and the second seat plate, so that it can resist greater axial and radial tensile forces, effectively avoiding local stress concentration in the three seat plates, ensuring the firmness and stability of the building, extending the service life of the building, and improving the quality of the construction project.

[0037] 2) The design has a simple structure and integrates the tensile mechanism into the shock-absorbing device. It can flexibly adapt to the complex and narrow building environment on site, facilitate construction and subsequent maintenance, and has certain economic efficiency.

[0038] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A building seismic isolation device, comprising a first seat plate and a second seat plate arranged parallel to the first seat plate and maintaining a gap with the first seat plate, characterized in that: Also includes, A third seat plate is rotatably connected to the first seat plate and the second seat plate respectively; The tensile mechanism is arranged along the circumference of the third seat plate, and the tensile mechanism includes a first support member connected to the first seat plate and a second support member connected to the second seat plate. The first support member and the second support member can be axially and / or radially displaced with respect to each other.

2. The building seismic isolation device according to claim 1, characterized in that: A plurality of wheel axles are arranged along the circumference of the first support member, which are connected to support wheels via the wheel axles, and the support wheels are rotatably connected to the second support member.

3. The building seismic isolation device according to claim 2, characterized in that: The rotation axis of the support wheel is eccentrically arranged relative to the central axis of the first support member.

4. The building seismic isolation device according to claim 2 or 3, characterized in that: A bearing is arranged between the supporting wheel and the wheel axle.

5. The building seismic isolation device according to claim 4, characterized in that: The end of the wheel shaft away from the first support member is connected to the limiting plate through a fastener, and the side of the fastener away from the limiting plate abuts against the second support member.

6. The building seismic isolation device according to claim 5, characterized in that: The side surface of the limiting plate in contact with the wheel axle extends to the supporting wheel.

7. The building seismic isolation device according to claim 5 or 6, characterized in that: The second support member is a cylindrical structure with an opening toward the support wheel, and a plurality of slots are circumferentially provided therein and radially penetrate the side wall of the second support member. The support wheel is inserted into the slot and rotatably connected to the slot, and the side of the fastener away from the limiting plate abuts against the bottom of the slot.

8. The building seismic isolation device according to claim 7, characterized in that: The outer diameter of the supporting wheel is smaller than the radial width of the slot where the supporting wheel is located.

9. The building seismic isolation device according to claim 8, characterized in that: The wheel surface of the supporting wheel is an arc surface, which can abut against one side wall of the slot and can roll on the side wall, thereby realizing axial and / or radial displacement between the first supporting member and the second supporting member.

10. The building seismic isolation device according to any one of claims 1 to 3, 5, 6, 8 and 9, characterized in that: The first spherical pair and the second spherical pair are respectively provided on both sides of the third seat plate, and the third seat plate is rotationally matched with the first seat plate through the first spherical pair, and is rotationally matched with the second seat plate through the second spherical pair.

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