CN201598746U - Composite three-dimensional seismic isolation bearing - Google Patents

Abstract

A composite three-dimensional shock-isolation support, including a horizontal shock-isolation support, a vertical shock isolator on the horizontal shock-isolation support, the vertical shock isolator includes a base, and a vertical lead extrusion damping is arranged on the base The horizontal lead extrusion damper and the symmetrically arranged horizontal lead extrusion damper, and the setting position of the vertical lead extrusion damper is higher than that of the horizontal lead extrusion damper; the horizontal lead extrusion damper includes a horizontal compartment on the base. The compartment is horizontally slidably connected with an A-shaped protruding shaft and filled with damping material; the vertical lead extrusion damper includes a vertical compartment on the base, and the compartment is vertically slidably connected with a B Type protruding shaft and filled with damping material in the vertical compartment, there is a transmission link between the A-type protruding shaft and B-type protruding shaft, and the two ends of the transmission connecting rod are respectively connected to one end of the A-type protruding shaft and the B-type protruding shaft. One end of the type protruding shaft is rotationally connected, and the butterfly spring group is concentrically matched on the vertical lead extrusion damper. The butterfly spring group is provided with an upper connecting plate and the upper connecting plate is connected with the other end of the B-shaped protruding shaft.

Description

Composite three-dimensional seismic isolation bearing

technical field

The utility model relates to a structural measure for a three-way building shock-isolation support, which solves the vertical shock-isolation problem that cannot be effectively solved by ordinary shock-isolation supports at present, and relates to a composite three-dimensional shock-isolation support.

Background technique

Seismic isolation bearing is a kind of energy dissipation and shock absorption (vibration) technology developed in recent years for the bottom of building structures. Horizontal vibrations thus effectively protect the superstructure. The existing products include lead-core rubber shock-isolating bearings, which are formed by alternately laminating multiple layers of thin steel plates and rubber sheets through thermal vulcanization, and pressing a lead rod into the center hole. A wide variety of seismic isolation bearing products have been widely used in the seismic isolation of multi-level and high-rise structures. Although some breakthroughs have been made in the study of multi-dimensional earthquakes (three translational degrees of freedom and three rotational degrees of freedom), they are rarely used in practice; currently, the theoretical level that is relatively mature and applied to actual engineering structure earthquake calculation and analysis has reached the three-dimensional (three translational degrees of freedom), so the seismic isolation research for structural three-dimensional earthquake is particularly important. Under the three-dimensional earthquake, due to the conflict between the vertical stiffness requirements of the building structure and the vertical isolation, there are currently few devices for vertical isolation, and the current research and tests are mostly limited to seismic isolation in two horizontal directions. . The utility model constructs a composite support that can be used for three-dimensional seismic isolation on the basis of the traditional horizontal seismic isolation support, which is an effective way to solve the problem of vertical seismic isolation of structures.

Utility model content

The utility model provides a composite three-dimensional shock-isolation support which has a compact structure and can reduce the height of the shock-isolation support and improve the shock-isolation effect.

A composite three-dimensional shock-isolation support, comprising: a horizontal shock-isolation support, a vertical shock isolator is arranged on the horizontal shock-isolation support, and the vertical shock isolator includes: a base, on which a The vertical lead extrusion damper and the symmetrically arranged horizontal lead extrusion damper, and the setting position of the vertical lead extrusion damper is higher than the horizontal lead extrusion damper; the horizontal lead extrusion damper includes The horizontal compartment on the seat is horizontally slidably connected with an A-shaped protruding shaft and filled with damping material in the compartment; the vertical lead extrusion damper includes a vertical compartment arranged on the base, A B-type protruding shaft is vertically slidably connected to the compartment and damping material is filled in the vertical compartment; a transmission link is arranged between the A-type protruding shaft and the B-type protruding shaft, and the two ends of the transmission link Rotately connected with one end of the A-type protruding shaft and one end of the B-type protruding shaft respectively; the butterfly spring group is concentrically matched on the vertical lead extrusion damper, and the butterfly spring group is provided with an upper connecting plate and the upper connecting plate is connected to the B The other end of the type protruding shaft is connected.

The traditional seismic isolation bearing only plays the role of seismic isolation in the horizontal direction, but its vertical stiffness is very large due to the self-weight of the bearing structure, which cannot isolate the vertical effect of the earthquake on the structure. The vertical vibration is converted into horizontal vibration through the structural conversion device, and corresponding damping components are installed to solve the problem that the traditional support cannot be vertically isolated. The device has clear principle and stable performance, and can be widely used in three-dimensional seismic isolation of structures.

Under the action of three-dimensional seismic load, the two acting components in the horizontal direction pass through the relative displacement in the horizontal direction between the upper and lower connecting plates of the support, so as to isolate most of the dynamic load transmitted to the superstructure in the horizontal direction. The Belleville springs are deformed due to vertical earthquake action. On the one hand, some energy is stored in the form of elastic potential energy; on the other hand, studies have shown that the Belleville springs can also consume a certain amount of energy through the friction of the contact surface. At present, the vertical energy dissipation device of the three-dimensional shock-isolation bearing only relies on the deformation of the butterfly spring group to dissipate energy. Obviously, its vertical energy dissipation capacity is relatively limited. On this basis, the utility model adds A-type protruding shaft and B-type The energy consumption of the relative motion between the protruding shaft and the damping material consumes part of the vertical vibration energy. The transmission link converts the vertical motion component of the B-type protruding shaft into the horizontal motion of the A-type protruding shaft: on the one hand, the reciprocating relative motion between the vertical and damping material of the B-type protruding shaft can consume energy; on the other hand, the two A The reciprocating relative movement of the protruding shaft and the damping material in the horizontal direction consumes energy.

The utility model provides a three-dimensional shock-isolation support with a simple structure, which is a way to effectively solve the problem of vertical shock-isolation in the current structure by adding vertical-horizontal conversion measures and additional damping devices to the traditional horizontal shock-isolation support . Through the conversion of vertical-horizontal displacement connecting rods in the orthogonal direction, the vertical reciprocating motion is converted into horizontal motion, which has the characteristics of compact structure and good stability: on the one hand, it can effectively use horizontal repeated displacement to increase energy consumption devices; on the other hand, it adopts The energy-dissipating device placed horizontally can effectively reduce the overall height of the shock-isolation support, which is conducive to improving the stability of the support. The support can be widely used in three-dimensional seismic isolation of multi-story and high-rise building structures, and has good economy.

Description of drawings

The utility model is further described below in conjunction with accompanying drawings and embodiments.

Figure 1 is the section of the composite three-dimensional seismic isolation bearing;

Figure 2 (a) is the elevation of the base;

Figure 2(b) is a plan view of the base;

Fig. 2 (c) is three views of the base;

Figure 3 is a schematic diagram of the assembly of the protruding shaft and the transmission connecting rod;

Fig. 4 is a schematic diagram of the upper connecting plate;

Figure 5 is a schematic diagram of the A-type protruding shaft;

Figure 6 is a B-type protruding axis diagram;

Fig. 7 is a schematic diagram of the transmission connecting rod;

The above figure includes: horizontal shock-isolation support 1, A-type protruding shaft 2, base 3, butterfly spring group 4, transmission connecting rod 5, B-type protruding shaft 6, upper connecting plate 7, protective cover 8, damping Filling material 9 , horizontal damper 10 , vertical damper 11 , horizontal compartment 12 , vertical compartment 13 , flange 14 .

Detailed ways

A composite three-dimensional shock-isolation support, comprising: a horizontal shock-isolation support 1, a vertical shock-isolator on the horizontal shock-isolation support 1, and the vertical shock-isolator includes: a base 3, on the base 3 A vertical lead extrusion damper 11 and a symmetrically arranged horizontal lead extrusion damper 10 are provided, and the setting position of the vertical lead extrusion damper 11 is higher than the horizontal lead extrusion damper 10, the horizontal lead extrusion The damper 10 includes a horizontal compartment 12 arranged on the base 3, on which the A-shaped protruding shaft 2 is horizontally slidably connected and filled with a damping material 9, the vertical lead extrusion damping The device 11 includes a vertical compartment 13 arranged on the base 3, on which the B-type protruding shaft 6 is vertically slidably connected and filled with damping material in the vertical compartment 13, and on the A-type protruding shaft 2 There is a transmission connecting rod 5 between the B-type protruding shaft 6, and the two ends of the transmission connecting rod 5 are respectively connected to one end of the A-type protruding shaft 2 and one end of the B-type protruding shaft 6, and the vertical lead extrusion damping Concentric matching disc spring group 4 on the device 11, the upper connecting plate 7 is provided on the disc spring group 4 and the upper connecting plate 7 is connected with the other end of the B-type protruding shaft 6; the described B-type protruding shaft 6 is provided There is a flange which can limit the position of the B-type protruding shaft 6, and the B-type protruding shaft 6 is connected in rotation with the transmission link through the flange.

As shown in Figure 1, the base 3 is located directly above the horizontal shock-isolation support 1 and is connected to its top plate by bolts; the A-type protruding shaft 2 is assembled into the limit hole of the horizontal compartment 12; the B-type protruding shaft 6 is assembled to the vertical Compartment 11 limit hole; horizontal compartment 12 and vertical compartment are filled with damping material 9; A-type protruding shaft 2 and B-type protruding shaft 6 are respectively pin-connected to the end of transmission connecting rod 5, as shown in Figure 3 As shown; the vertical damper 11 on the upper part of the base 3 is concentrically matched with the butterfly spring group 4; the butterfly spring group 4 is formed by stacking a plurality of butterfly springs in a certain form. It is tightly contacted with the upper connecting plate 7; the lower circumference of the protective cover 8 is welded to the outer edge of the base 3; the central hole of the upper connecting plate 7 is matched with the top of the B-shaped protruding shaft 6 and fixed by welding.

The stiffness, quantity and stacking form of the butterfly spring group 4 shall be selected according to the design requirements of the vertical bearing capacity of the support; The design of relevant regulations can generally be carried out directly by using the relatively mature design method of lead rubber shock-isolation bearings at present. The design of the A-type protruding shaft 2 and the B-type protruding shaft 6 is based on the requirements for vertical damping output force and the strength and stiffness requirements of related components.

Claims (2)

1. compound three-dimensional shock isolation support, comprise: horizontal shock isolating pedestal (1), it is characterized in that, go up the vertical earthquake isolating device at horizontal shock isolating pedestal (1), described vertical earthquake isolating device comprises: pedestal (3), on pedestal (3), be provided with the horizontal lead extrusion damper (10) of vertical lead extrusion damper (11) and symmetric arrangement, and the position that is provided with of vertical lead extrusion damper (11) is higher than horizontal lead extrusion damper (10), described horizontal lead extrusion damper (10) comprises the horizontal compartment (12) that is located on the pedestal (3), going up horizontal slip at compartment (12) is connected with the prominent axle of A type (2) and is filled with damping material (9) in compartment (12), described vertical lead extrusion damper (11) comprises the vertical compartment (13) that is located on the pedestal (3), vertically slidely connect the prominent axle of Type B (6) on the compartment (13) and in vertical compartment (13), be filled with damping material, between prominent axle of A type (2) and the prominent axle of Type B (6), be provided with kinematic link (5), and the two ends of kinematic link (5) are rotationally connected with an end of the prominent axle of A type (2) and an end of the prominent axle of Type B (6) respectively, go up coupling butterfly spring group (4) with one heart at vertical lead extrusion damper (11), be provided with upper connective plate (7) and upper connective plate (7) is connected with the other end of Type B prominent spool (6) in butterfly spring group (4).

2. compound three-dimensional shock isolation support according to claim 1 is characterized in that, be provided with to have concurrently the prominent axle of Type B (6) spacing flange (14) on the prominent axle of Type B (6), and the prominent axle of Type B (6) is realized being rotationally connected by flange (14) and kinematic link (5).

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