Fabricated friction type combined support with vertical uplift resistance function

Abstract

This invention discloses a prefabricated friction-type composite support with vertical pull-out resistance. The slide plate support includes a pad, an upper friction plate, a smooth plate, and an upper pull-out resistance track. A middle slider is disposed between the arc surfaces of the bottom and top slide plates. The bottom and top slide plates are respectively disposed on the arc surfaces of the base plate and the top seat plate. The pad is disposed on the top surface of the top seat plate. The upper friction plate is disposed on the pad. The smooth plate is disposed on the upper friction plate. The upper pull-out resistance track is disposed on both sides of the bottom surface of the smooth plate. Under vertical compressive loads, the support transmits the load through the sliders, slide plates, and seat plate, while the pull-out resistance tracks are unaffected, thus ensuring that the horizontal frictional hysteresis performance is unaffected by the pull-out resistance tracks, simplifying force analysis. Under vertical tensile loads, the support transmits the load through a layered nesting mechanism of the ear plates and pull-out resistance tracks, resulting in higher overall stability.

Description

Technical Field

[0001] This invention belongs to the technical field of seismic isolation and damping devices for bridges and building structures, specifically a prefabricated friction-type combined bearing with vertical pull-out resistance. Background Technology

[0002] Seismic bearings are crucial components in the seismic isolation and mitigation design of bridges and buildings, especially for long-span bridges. Friction pendulum bearings and sliding bearings can provide significant horizontal deformation space to dissipate seismic energy. However, existing friction pendulum bearings and sliding bearings lack vertical uplift resistance and cannot withstand the heaving effect of vertical seismic motions. Furthermore, due to the inherent characteristics of the structure and the differences in horizontal seismic motion components, the seismic response of the structure in the two horizontal directions is not equal. Therefore, there is an urgent need for a three-dimensional seismic isolation bearing that can provide both vertical uplift resistance and meet the different deformation requirements in the two horizontal directions. In view of this, this invention proposes a prefabricated friction-type composite bearing with vertical uplift resistance to solve the aforementioned technical problems. Summary of the Invention

[0003] This invention relates to an assembled friction-type combined support with vertical pull-out resistance, comprising a lower friction pendulum support and an upper sliding plate support. The friction pendulum support includes a middle slider, a bottom sliding plate, a top sliding plate, a base plate, a top seat plate, a first friction plate, a second friction plate, a first track, and a second track. The sliding plate support includes a pad, an upper friction plate, a smooth plate, and an upper pull-out resistance track. The middle slider is disposed between the arc surfaces of the bottom and top sliding plates. The bottom and top sliding plates are respectively disposed on the arc surfaces of the base plate and the top seat plate. The pad is disposed on the top surface of the top seat plate. The upper friction plate is disposed on the pad. The smooth plate is disposed on the upper friction plate. The upper pull-out resistance track is disposed on both sides of the bottom surface of the smooth plate.

[0004] The slider includes a hexahedral slider and four first ear plates; the top and bottom faces of the hexahedral slider are relatively symmetrical arc surfaces, and the vertical projection of the arc surfaces is rectangular; the front, back, left, and right faces of the hexahedral slider are planes; the first ear plates are curved plates with a square cross-section and a fan-shaped longitudinal section; the first ear plates are disposed on the front and back faces of the hexahedral slider; the outer arc surface of the first ear plate is coplanar with the arc surface of the hexahedral slider, and the arc surface radii are equal;

[0005] The bottom and top sliding plates are arc-shaped plates of equal thickness, with the upper and lower arc surfaces parallel to each other, and the vertical projection of the arc surfaces is rectangular; the front, back, left, and right sides of the bottom and top sliding plates are flat; the left and right ends of the bottom and top sliding plates are provided with first stops; the front and back ends of the bottom and top sliding plates are provided with second ear plates; the second ear plates are curved plates with a square cross-section and a fan-shaped longitudinal section; the bottom and top sliding plates are identical in shape and size.

[0006] The arc surfaces of the base plate and the top plate are sliding surfaces with equal radii, and the vertical projection of the arc surfaces is rectangular; the left and right ends of the base plate and the top plate are provided with second stops; the base plate is provided with a lower connecting plate around its perimeter; the left and right sides of the top plate are provided with third ear plates; the third ear plates are straight plates with a square cross-section.

[0007] There are four first tracks and four second tracks, all of which are curved tracks with a U-shaped cross-section and a fan-shaped longitudinal section. Two of the first tracks are fixed to the arc surface of the bottom slide plate, and the other two are fixed to the arc surface of the top slide plate. Two of the second tracks are fixed to the arc surface of the base plate, and the other two are fixed to the arc surface of the top plate. The fixing method uses high-strength bolts for connection. The first tracks and the first ear plates are nested together. The second tracks and the second ear plates are nested together. The four first tracks are identical in shape and size, and their length is less than the arc length of the bottom slide plate and the top slide plate. The four second tracks are identical in shape and size, and their length is less than the arc length of the base plate and the top plate.

[0008] The first friction plate and the second friction plate each consist of two pieces, both being curved rectangular thin plates. The two first friction plates are respectively fixed to the arc surfaces of the bottom sliding plate and the top sliding plate, located between two first tracks on the same arc surface. The two second friction plates are respectively fixed to the arc surfaces of the base plate and the top plate, located between two second tracks on the same arc surface. The friction coefficients of the two first friction plates are equal. The friction coefficients of the two second friction plates are equal. The friction coefficient of the second friction plate is 2 to 3 times that of the first friction plate. The middle slider runs along the length of the first track between the two first friction plates. Simultaneously, relative frictional sliding occurs on the upper and lower surfaces, with a sliding displacement capacity equal to twice the initial horizontal distance between the middle slider and the first stop; this is the first sliding stage. The bottom and top sliding plates simultaneously undergo relative frictional sliding along the length of the second track on the two second friction plates, with a sliding displacement capacity equal to twice the initial horizontal distance between the bottom and top sliding plates and the second stop; this is the second sliding stage. The displacement capacity of the second sliding stage is 2 to 3 times that of the first sliding stage. The horizontal sliding capacity of the lower friction pendulum support is the sum of the displacements of the first and second sliding stages.

[0009] The pad is a circular thin plate, fixed to the top surface of the top seat plate; the center of the bottom surface of the pad coincides with the center of the top surface of the top seat plate; the plane diameter of the pad is smaller than the side length of the top surface of the top seat plate; the upper friction plate is a circular thin plate with the same plane dimensions as the pad; the upper friction plate is fixed to the top surface of the pad and keeps them overlapping; the friction coefficient of the upper friction plate is equal to the friction coefficient of the second friction plate; the smoothing plate is placed on top of the top seat plate and is separated by the overlapping pad and the upper friction plate; two third blocks are provided on the central axis of the bottom surface of the smoothing plate; the two third blocks are strip-shaped and located on both sides of the pad; the height of the third blocks is less than the overlap of the pad and the upper friction plate. The upper plate has a height of [missing information]; a fourth stop block of equal length and parallel to the third stop block is set on the front and rear sides of the top plate, with two blocks on each side, and is installed using high-strength bolts; a gap is left between the third stop block and the top surface of the top plate; a gap is left between the fourth stop block and the bottom surface of the smooth plate; an upper connecting plate is provided around the smooth plate; upper anti-pull-out rails are provided on both sides of the bottom surface of the smooth plate; the upper anti-pull-out rails are straight rails with an L-shaped cross-section, nested with the third ear plate of the top plate; the smooth plate slides relative to the upper friction plate along the length direction of the upper anti-pull-out rails; the horizontal sliding capacity of the upper sliding plate support is the initial horizontal distance between the third stop block and the fourth stop block;

[0010] The effective radii of all arc surfaces in the lower friction pendulum support are equal; all arc surfaces include the arc surfaces of the slider, bottom slide, top slide, base plate, top seat plate, first friction plate, second friction plate, first track, and second track in the component; the effective radius = the actual radius of the arc surface of the component - the normal distance from the center of gravity of the middle slider to the arc surface; the middle slider is nested with the bottom slide and top slide through four first ear plates and four first tracks; the bottom slide and top slide are nested with the base plate and top seat plate through four second ear plates and four second tracks; the smooth plate is nested with the top seat plate through two third ear plates and two upper pull-out resistance tracks; the vertical pull-out resistance of the support is provided by the layered nesting mechanism between the first ear plates and the first track, the second ear plates and the second track, and the third ear plates and the upper pull-out resistance tracks; gaps are left between the nested components; the initial positions of each component of the support before sliding are symmetrical about the elevation of the bottom centerline of the base plate.

[0011] The beneficial effects of this invention are as follows:

[0012] (1) Modify the traditional friction pendulum support by adding ear plates and anti-pull tracks and nesting them together to realize the vertical anti-pull function of the multi-stage friction pendulum.

[0013] (2) The traditional skateboard support is modified by adding an anti-pull track to realize its vertical anti-pull and horizontal guiding functions, and by adding a stop block to limit its horizontal sliding.

[0014] (3) Arrange the sliding plate support and the friction pendulum support orthogonally on the upper and lower layers respectively. By decoupling the displacement, the upper and lower layers can slide in two horizontally orthogonal directions respectively. This can satisfy the different deformation requirements of the support in the two horizontal directions and also enable the support as a whole to have vertical pull-out resistance.

[0015] (4) Under vertical compressive load, the support transmits the load through each slider, slide plate and seat plate, and each pull-out track is not subjected to force, so that the horizontal friction hysteresis performance is not affected by the pull-out track, and the force analysis is simpler; under vertical tensile load, the support transmits the load through the layer-by-layer nesting mechanism of ear plate and pull-out track, and the overall stability is higher.

[0016] (5) Two prerequisites for the lower friction pendulum support to slide normally are identified: a) the effective radii of all arc surfaces are equal; b) the friction coefficients of the two first friction plates are equal, and the friction coefficients of the two second friction plates are equal.

[0017] (6) The friction force and sliding displacement of the lower friction pendulum support in the two stages are uniform: the displacement capacity of the lower friction pendulum support in the second sliding stage is set to 2 to 3 times that in the first sliding stage, and the friction coefficient of the second friction plate is set to 2 to 3 times that of the first friction plate; the overall horizontal force-displacement hysteresis curve is fuller and the friction energy dissipation capacity is higher.

[0018] (7) The hysteresis energy dissipation capacity of the upper and lower supports is balanced: by setting the friction coefficient of the upper sliding plate support to be equal to that of the lower second friction plate, the hysteresis energy dissipation capacity of the upper sliding plate support can be approximately the same as that of the lower friction pendulum support.

[0019] (8) The components of the support are manufactured in the factory and assembled by high-strength bolts. It is easy to manufacture, has significant functions, and is easy to replace after damage. It can provide a reference for the seismic isolation design of large-span bridges and high-rise buildings. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the assembled friction-type combined support with vertical pull-out resistance of the present invention;

[0021] Figure 2 This is a front view of an embodiment of the assembled friction-type combined support with vertical pull-out resistance of the present invention;

[0022] Figure 3 This is a side view of an embodiment of the assembled friction type combined support with vertical pull-out resistance of the present invention;

[0023] Figure 4 This is a top view of an embodiment of the assembled friction type combined support with vertical pull-out resistance of the present invention;

[0024] Figure 5 This is a diagram showing the internal structure of the lower friction pendulum support in an embodiment of the present invention;

[0025] Figure 6 This is a structural diagram of the lower first track in an embodiment of the present invention;

[0026] Figure 7 This is a structural diagram of the lower second track in an embodiment of the present invention;

[0027] Figure 8 This is a structural diagram of the lower first friction plate in an embodiment of the present invention;

[0028] Figure 9 This is a structural diagram of the lower second friction plate in an embodiment of the present invention;

[0029] Figure 10 This is a structural diagram of the slider in the lower layer in an embodiment of the present invention;

[0030] Figure 11 This is a structural diagram of the lower bottom sliding plate in an embodiment of the present invention;

[0031] Figure 12 This is a structural diagram of the lower top sliding plate in an embodiment of the present invention;

[0032] Figure 13 This is a structural diagram of the lower base plate in an embodiment of the present invention;

[0033] Figure 14 This is a structural diagram of the lower top plate in an embodiment of the present invention;

[0034] Figure 15 This is a diagram showing the internal structure of the upper smooth plate in an embodiment of the present invention.

[0035] The attached diagrams and their corresponding names are as follows: 1-Middle slider (slider 1-1, first ear plate 1-2); 2-Bottom slide plate, 3-Top slide plate (first stop 23-1, second ear plate 23-2); 4-Base plate, 5-Top base plate (second stop 45-1, lower connecting plate 4-2, third ear plate 5-2); First friction plate 6-1, second friction plate 6-2; First track 7-1, second track 7-2; 8-Padded block; 9-Upper friction plate; 10-Smooth plate (third stop 10-1, fourth stop 10-2, upper connecting plate 10-3); 11-Upper anti-pull-out track. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1-15As shown, the assembled friction type combined support with vertical pull-out resistance function is divided into upper and lower layers. The lower layer is a friction pendulum support, including a middle slider 1, a bottom slide plate 2, a top slide plate 3, a base plate 4, a top seat plate 5, a first friction plate 6-1, a second friction plate 6-2, a first track 7-1, and a second track 7-2. The upper layer is a slide plate support, including a pad 8, an upper friction plate 9, a smooth plate 10, and an upper pull-out resistance track 11.

[0038] The middle slider 1 is positioned between the curved surfaces of the bottom slide plate 2 and the top slide plate 3, which are respectively positioned on the curved surfaces of the base plate 4 and the top plate 5. The middle slider 1 includes a hexahedral slider 1-1 and four first ear plates 1-2. The top and bottom surfaces of the hexahedral slider 1-1 are relatively symmetrical curved surfaces, and the vertical projection of the curved surfaces is rectangular. The front, back, left, and right sides of the hexahedral slider 1-1 are flat. The first ear plates 1-2 are curved plates with a square cross-section and a fan-shaped longitudinal section. The first ear plates 1-2 are positioned on the front and back surfaces of the hexahedral slider 1-1. The outer curved surface of the first ear plates 1-2 is coplanar with the curved surface of the hexahedral slider 1-1, and the radii of the curved surfaces are equal. The bottom slide plate 2 and the top slide plate 3 are curved plates of equal thickness, with the upper and lower curved surfaces parallel to each other, and the vertical projection of the curved surfaces is rectangular; the front, back, left, and right sides of the bottom slide plate 2 and the top slide plate 3 are flat; the left and right ends of the bottom slide plate 2 and the top slide plate 3 are provided with first stop blocks 23-1; the front and back ends of the bottom slide plate 2 and the top slide plate 3 are provided with second ear plates 23-2; the second ear plates 23-2 are curved plates with a square cross section and a fan-shaped longitudinal section; the bottom slide plate 2 and the top slide plate 3 are exactly the same in shape and size. The curved surfaces of the base plate 4 and the top plate 5 are sliding surfaces with equal radii, and the vertical projection of the curved surfaces is rectangular; the left and right ends of the base plate 4 and the top plate 5 are provided with second stop blocks 45-1; the base plate 4 is provided with lower connecting plates 4-2 around its perimeter; the left and right sides of the top plate 5 are provided with third ear plates 5-2, which are straight plates with a square cross section.

[0039] There are four of each of the first track 7-1 and the second track 7-2, all of which are curved tracks with a U-shaped cross-section and a fan-shaped longitudinal section. Two of the first tracks 7-1 are fixed to the arc surface of the bottom slide plate 2, and the other two are fixed to the arc surface of the top slide plate 3. Two of the second tracks 7-2 are fixed to the arc surface of the base plate 4, and the other two are fixed to the arc surface of the top plate 5. The fixing method is to use high-strength bolts for connection. The first track 7-1 and the first ear plate 1-2 are nested together; the second track 7-2 and the second ear plate 23-2 are nested together. The four first tracks 7-1 are identical in shape and size, and their length is less than the arc length of the bottom slide plate 2 and the top slide plate 3. The four second tracks 7-2 are identical in shape and size, and their length is less than the arc length of the base plate 4 and the top plate 5. There are two first friction plates 6-1 and two second friction plates 6-2, both of which are curved rectangular thin plates. The two first friction plates 6-1 are fixed to the curved surfaces of the bottom sliding plate 2 and the top sliding plate 3, respectively, and are located between two first tracks 7-1 on the same curved surface. The two second friction plates 6-2 are fixed to the curved surfaces of the base plate 4 and the top plate 5, respectively, and are located between two second tracks 7-2 on the same curved surface. The coefficients of friction of the two first friction plates 6-1 are equal; the coefficients of friction of the two second friction plates 6-2 are equal; the coefficient of friction of the second friction plates 6-2 is 2 to 3 times that of the first friction plates 6-1.

[0040] A pad 8 is placed on the top surface of the top plate 5, an upper friction plate 9 is placed on the pad 8, a smoothing plate 10 is placed on the upper friction plate 9, and upper anti-pull-out rails 11 are placed on both sides of the bottom surface of the smoothing plate 10. The pad 8 is a circular thin plate, fixed to the top surface of the top plate 5; the center of the bottom surface of the pad 8 coincides with the center of the top surface of the top plate 5; the plane diameter of the pad 8 is smaller than the side length of the top surface of the top plate 5; the upper friction plate 9 is a circular thin plate with the same plane dimensions as the pad 8; the upper friction plate 9 is fixed to the top surface of the pad 8 and remains aligned; the friction coefficient of the upper friction plate 9 is equal to the friction coefficient of the second friction plate 6-2. The smooth plate 10 is separated by overlapping pads 8 and an upper friction plate 9. Two third stops 10-1 are provided on the central axis of the bottom surface of the smooth plate 10. The two third stops 10-1 are strip-shaped and located on both sides of the pads 8. The height of the third stops 10-1 is less than the combined height of the pads 8 and the upper friction plate 9. Fourth stops 10-2, of equal length and parallel to the third stops 10-1, are provided on the front and rear sides of the top plate 5, with two on each side, and are installed using high-strength bolts. A gap is left between the third stops 10-1 and the top surface of the top plate 5; a gap is left between the fourth stops 10-2 and the bottom surface of the smooth plate 10. Upper connecting plates 10-3 are provided around the smooth plate 10, and upper pull-out rails 11 are provided on both sides of the bottom surface. The upper pull-out rails 11 are straight rails with an L-shaped cross-section; the upper pull-out rails 11 and the third ear plates 5-2 of the top plate 5 are nested together.

[0041] The effective radius of all arc surfaces in the lower friction pendulum support is equal. All arc surfaces include the arc surfaces of slider 1, bottom slide 2, top slide 3, base plate 4, top seat plate 5, first friction plate 6-1, second friction plate 6-2, first track 7-1 and second track 7-2 in the part. The effective radius = the actual radius of the arc surface of the part - the normal distance from the center of gravity of the middle slider 1 to the arc surface. The middle slider 1 is nested with the bottom slide plate 2 and the top slide plate 3 via four first ear plates 1-2 and four first tracks 7-1; the bottom slide plate 2 and the top slide plate 3 are nested with the base plate 4 and the top plate 5 via four second ear plates 23-2 and four second tracks 7-2; the smooth plate 10 is nested with the top plate 5 via two third ear plates 5-2 and two upper pull-out resistance tracks 11; the vertical pull-out resistance of the support is provided by the layered nesting mechanism between the first ear plates 1-2 and the first tracks 7-1, the second ear plates 23-2 and the second tracks 7-2, and the third ear plates 5-2 and the upper pull-out resistance tracks 11, with gaps between the nested parts. The initial positions of each part of the support before sliding are symmetrical about the elevation of the bottom centerline of the base plate; in this embodiment, all gaps are 2mm.

[0042] The middle slider 1 slides simultaneously along the length of the first track 7-1 on the two first friction plates 6-1, with a sliding displacement capacity equal to twice the initial horizontal distance between the middle slider 1 and the first stop 23-1. This is the first sliding stage. The bottom slide plate 2 and the top slide plate 3 slide simultaneously along the length of the second track 7-2 on the two second friction plates 6-2, with a sliding displacement capacity equal to twice the initial horizontal distance between the bottom slide plate 2, the top slide plate 3 and the second stop 45-1. This is the second sliding stage. The displacement capacity of the second sliding stage is 2 to 3 times that of the first sliding stage. The horizontal sliding capacity of the lower friction pendulum support is the sum of the displacements of the first and second sliding stages. The smooth plate 10 slides relative to the upper friction plate 9 along the length of the upper anti-pullback track 11. The horizontal sliding capacity of the upper slide plate support is the initial horizontal distance between the third stop 10-1 and the fourth stop 10-2.

[0043] like Figures 1-15 As shown, the specific manufacturing steps of the assembled friction type combined bearing with vertical pull-out resistance are as follows:

[0044] The first step is to prefabricate the various parts of the support.

[0045] According to the support structure, characteristics and size requirements described in this invention, each part is prefabricated in the factory. Each support includes a middle slider 1, a bottom slide plate 2, a top slide plate 3, a base plate 4, a top seat plate 5, two first friction plates 6-1, two second friction plates 6-2, four first tracks 7-1, four second tracks 7-2, a pad block 8, an upper friction plate 9, a smooth plate 10 and two upper pull-out tracks 11; the number and size of the parts are checked, and assembly is awaited.

[0046] The second step is to assemble the lower friction pendulum support.

[0047] Step 2.1) Attach the upper / lower friction plates: Attach the two first friction plates 6-1 to the arc sliding areas of the bottom slide plate 2 and the top slide plate 3 respectively; attach the two second friction plates 6-2 to the arc sliding areas of the base plate 4 and the top plate 5 respectively; attach the upper friction plate 9 to the pad 8 on the top surface of the top plate 5.

[0048] Step 2.2) Install the sliding assembly: Place the middle slider 1 on the bottom slide plate 2, with the bottom arc surface of the middle slider 1 coinciding with the first friction plate 6-1 on the bottom slide plate 2; nest the two first tracks 7-1 on the first ear plate 1-2 at the bottom of the middle slider 1, and bolt the first tracks 7-1 to the bottom slide plate 2 with high-strength bolts; place the top slide plate 3 on the middle slider 1, with the top arc surface of the middle slider 1 coinciding with the first friction plate 6-1 on the top slide plate 3; nest the other two first tracks 7-1 on the first ear plate 1-2 at the top of the middle slider 1, and bolt the first tracks 7-1 to the top slide plate 3 with high-strength bolts (if there is insufficient internal space at this time, affecting normal installation, the top slide plate 3 and the middle slider 1 can be slid away from the bottom slide plate 2, and bolted together after a certain amount of space is available. After connection, reset the three components to their initial positions).

[0049] At this point, the middle slide block 1, the bottom slide block 2, and the top slide block 3 form a sliding assembly; the bottom slide block 2 and the top slide block 3 are temporarily fixed (with additional locking buckles) to prevent them from misaligning;

[0050] Step 2.3) Install the bottom / top plate: Place the base plate 4 at the bottom (concave side up), place the sliding assembly from Step 2.2 on the base plate 4, with the bottom arc surface of the bottom slide plate 2 in the sliding assembly coinciding with the second friction plate 6-2 on the base plate 4; nest the two second tracks 7-2 on the second ear plate 23-2 of the bottom slide plate 2, and bolt the second tracks 7-2 to the base plate 4 with high-strength bolts; place the top plate 5 on the sliding assembly, with the top arc surface of the top slide plate 3 in the sliding assembly coinciding with the second friction plate 6-2 on the top plate 5; nest the other two second tracks 7-2 on the second ear plate 23-2 of the top slide plate 3, and bolt the second tracks 7-2 to the top plate 5 with high-strength bolts;

[0051] At this point, the lower friction pendulum support is installed; the base plate 4 and the top plate 5 are temporarily fixed (with additional locking buckles) to prevent misalignment.

[0052] The third step is to assemble the upper slide support.

[0053] Step 3.1) Install the smooth plate: Pass the smooth plate 10 through the top plate 5, press the bottom surface of the smooth plate 10 onto the upper friction plate 9, and nest the upper anti-pull track 11 of the smooth plate 10 with the third ear plate 5-2 of the top plate 5.

[0054] Step 3.2) Install the limit block: Fix the fourth block 10-2 to the front and rear sides of the top plate 5 with high-strength bolts;

[0055] At this point, the upper slide plate support is installed; the smooth plate 10 and the top plate 5 are temporarily fixed (with additional locking buckles) to prevent misalignment.

[0056] At this point, the entire support assembly is complete; the temporary fixing latches can only be opened after the support is installed on the structure.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A prefabricated friction-type composite support with vertical pull-out resistance, comprising a lower friction pendulum support and an upper sliding plate support, characterized in that: The friction pendulum support includes: a middle slider (1), a bottom slide plate (2), a top slide plate (3), a base plate (4), a top seat plate (5), a first friction plate (6-1), a second friction plate (6-2), a first track (7-1), and a second track (7-2); the slide plate support includes: a pad (8), an upper friction plate (9), a smooth plate (10), and an upper pull-out track (11); the middle slider (1) is disposed between the arc surfaces of the bottom slide plate (2) and the top slide plate (3); the bottom slide plate (2) and the top slide plate (3) are respectively disposed on the arc surfaces of the base plate (4) and the top seat plate (5); the pad (8) is disposed on the top surface of the top seat plate (5); the upper friction plate (9) is disposed on the pad (8); the smooth plate (10) is disposed on the upper friction plate (9); the upper pull-out track (11) is disposed on both sides of the bottom surface of the smooth plate (10); The middle slider (1) includes a hexahedral slider (1-1) and four first ear plates (1-2); the upper and lower surfaces of the hexahedral slider (1-1) are relatively symmetrical arc surfaces, and the vertical projection of the arc surface is rectangular; the front, back, left and right sides of the hexahedral slider (1-1) are planes; the first ear plate (1-2) is a curved plate with a square cross section and a fan-shaped longitudinal section; the first ear plate (1-2) is set on the front and back surfaces of the hexahedral slider (1-1); the outer arc surface of the first ear plate (1-2) is coplanar with the arc surface of the hexahedral slider (1-1), and the arc surface radii are equal; The bottom slide plate (2) and the top slide plate (3) are arc-shaped plates of equal thickness, with the upper and lower arc surfaces parallel to each other, and the vertical projection of the arc surfaces is rectangular; the front, back, left and right sides of the bottom slide plate (2) and the top slide plate (3) are flat; the left and right ends of the bottom slide plate (2) and the top slide plate (3) are provided with first stop blocks (23-1); the front and back ends of the bottom slide plate (2) and the top slide plate (3) are provided with second ear plates (23-2); the second ear plates (23-2) are curved plates with a square cross section and a fan-shaped longitudinal section; the bottom slide plate (2) and the top slide plate (3) have the same shape and size; The arc surfaces of the base plate (4) and the top plate (5) are sliding surfaces with equal radii and rectangular vertical projections. The left and right ends of the base plate (4) and the top plate (5) are provided with second stops (45-1). The base plate (4) is provided with a lower connecting plate (4-2) around its perimeter. The left and right sides of the top plate (5) are provided with third ear plates (5-2). The third ear plates (5-2) are straight plates with a square cross-section. There are four of each of the first track (7-1) and the second track (7-2), all of which are curved tracks with a Γ-shaped cross section and a fan-shaped longitudinal section; two of the first tracks (7-1) are fixed to the arc surface of the bottom slide plate (2), and the other two are fixed to the arc surface of the top slide plate (3); two of the second tracks (7-2) are fixed to the arc surface of the base plate (4), and the other two are fixed to the arc surface of the top seat plate (5); the fixing method adopts high-strength bolt connection; the first track (7-1) and the first ear plate (1-2) are nested together; the second track (7-2) and the second ear plate (23-2) are nested together; the four first tracks (7-1) have the same shape and size, and their length is less than the arc length of the bottom slide plate (2) and the top slide plate (3); the four second tracks (7-2) have the same shape and size, and their length is less than the arc length of the base plate (4) and the top seat plate (5); The first friction plate (6-1) and the second friction plate (6-2) each consist of two pieces, both of which are curved rectangular thin plates; the two first friction plates (6-1) are respectively fixed to the arc surfaces of the bottom sliding plate (2) and the top sliding plate (3); the two second friction plates (6-2) are respectively fixed to the arc surfaces of the base plate (4) and the top plate (5); the friction coefficients of the two first friction plates (6-1) are equal; the friction coefficients of the two second friction plates (6-2) are equal; the friction coefficient of the second friction plate (6-2) is 2 to 3 times that of the first friction plate (6-1); The middle slider (1) slides relative to each other on the two first friction plates (6-1) along the length of the first track (7-1). The sliding displacement capacity is equal to twice the initial horizontal distance between the middle slider (1) and the first stop (23-1). This is the first sliding stage. The bottom slide plate (2) and the top slide plate (3) slide relative to each other on the two second friction plates (6-2) along the length of the second track (7-2). The sliding displacement capacity is equal to twice the initial horizontal distance between the bottom slide plate (2) and the top slide plate (3) and the second stop (45-1). This is the second sliding stage. The displacement capacity of the second sliding stage is 2 to 3 times that of the first sliding stage. The horizontal sliding capacity of the lower friction pendulum support is the sum of the displacements of the first and second sliding stages. The pad (8) is a circular thin plate, fixed on the top surface of the top plate (5); the center of the bottom surface of the pad (8) coincides with the center of the top surface of the top plate (5); the plane diameter of the pad (8) is smaller than the side length of the top surface of the top plate (5); the upper friction plate (9) is a circular thin plate with the same plane dimensions as the pad (8); the upper friction plate (9) is fixed on the top surface of the pad (8) and keeps them overlapping; the friction coefficient of the upper friction plate (9) is equal to that of the second friction plate (6-2); The smooth plate (10) is set on top of the top plate (5) and is separated by overlapping pads (8) and upper friction plate (9); two third blocks (10-1) are provided on the central axis of the bottom surface of the smooth plate (10); the two third blocks (10-1) are strip-shaped and located on both sides of the pads (8); the height of the third blocks (10-1) is less than the overlapping height of the pads (8) and the upper friction plate (9); a fourth block (10-2) of the same length as the third blocks (10-1) and parallel to them is set on the front and rear sides of the top plate (5), with two on each side, and is installed with high-strength bolts; an upper connecting plate (10-3) is provided around the smooth plate (10); an upper pull-out rail (11) is provided on both sides of the bottom surface of the smooth plate (10); the upper pull-out rail (11) is a straight rail with an L-shaped cross section, nested with the third ear plate (5-2) of the top plate (5); The smooth plate (10) slides relative to the upper friction plate (9) along the length of the upper anti-pull track (11); the horizontal sliding capacity of the upper slide plate support is the initial horizontal distance between the third stop (10-1) and the fourth stop (10-2).

2. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The effective radii of all the arc surfaces in the lower friction pendulum support are equal; all the arc surfaces include the arc surfaces of the slider (1), bottom slide (2), top slide (3), base plate (4), top seat plate (5), first friction plate (6-1), second friction plate (6-2), first track (7-1) and second track (7-2) in the part; the effective radius = the actual radius of the arc surface of the part - the normal distance from the center of gravity of the slider (1) to the arc surface.

3. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The lower friction pendulum support and the upper sliding plate support each slide in two horizontally orthogonal directions.

4. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The first friction plate (6-1) is positioned between two first tracks (7-1) located on the same arc surface; the second friction plate (6-2) is positioned between two second tracks (7-2) located on the same arc surface.

5. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The middle slider (1) is nested with the bottom slide plate (2) and the top slide plate (3) via four first ear plates (1-2) and four first tracks (7-1).

6. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The bottom slide plate (2) and the top slide plate (3) are nested together with the base plate (4) and the top plate (5) via four second ear plates (23-2) and four second tracks (7-2).

7. The assembled friction-type combined support with vertical pull-out resistance function according to claim 1, characterized in that: The smooth plate (10) is nested with the top plate (5) via two third ear plates (5-2) and two upper pull-out rails (11).

8. The assembled friction-type combined support with vertical pull-out resistance according to any one of claims 1 to 7, characterized in that: The vertical pull-out resistance of the support is provided by the nesting mechanism between the first ear plate (1-2) and the first track (7-1), the second ear plate (23-2) and the second track (7-2), the third ear plate (5-2) and the upper pull-out track (11); gaps are left between the nested parts.

9. The assembled friction-type combined support with vertical pull-out resistance according to any one of claims 1 to 7, characterized in that: A gap is left between the third stop (10-1) and the top surface of the top plate (5); a gap is left between the fourth stop (10-2) and the bottom surface of the smooth plate (10).

10. The assembled friction-type combined support with vertical pull-out resistance according to claim 1, characterized in that: The initial positions of each component before sliding are symmetrical about the vertical plane containing the central axis of the bottom surface of the base plate (4).

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