Support with vertical seismic resistance performance to prevent post-void structure failure

Abstract

The utility model discloses a support with vertical anti -seismic performance prevents the structure failure after emptying, including upper support board, the upper support board lower extreme inner recess forms upper ball type groove, the upper support board lower extreme forms horizontal limiting baffle, the horizontal limiting baffle is limited to the ball crown lining board, under the state of horizontal shift or lifting of upper support board, the ball crown lining board is inside the horizontal limiting baffle, avoids the structural failure of vertical earthquake. In high intensity area, when vertical earthquake response is too big, the beam body can produce negative reaction on the support, and the upper plate of the support is lifted with the beam body, the upper support board is provided with limiting baffle and the edge contact of ball crown lining board, forms mechanical jam, prevents the structural failure of ball crown lining board deviation and causes the support, ensures that the support can automatically fall back and reset under the action of gravity after the earthquake, guarantees the overall stability of structure, realizes the function of preventing the structural failure after emptying of support.

Description

Technical Field

[0001] This utility model belongs to the field of bridge bearing technology, specifically relating to a bearing with vertical seismic resistance to prevent structural failure after detachment. Background Technology

[0002] my country has a vast territory and complex geological conditions, with its railway network spanning multiple seismically active zones. Statistics show that approximately 60% of my country's land area lies within seismic intensity zones of 7 degrees or higher. In high-intensity zones (8 degrees and above), railway bridges are particularly vulnerable to severe damage under strong earthquakes, with bridge supports failing, beams shifting, and even beams collapsing. This seriously threatens railway transportation safety and leads to enormous economic losses and social impacts.

[0003] Currently, seismic isolation spherical bearings are widely used due to their excellent self-resetting ability and energy dissipation characteristics. However, with the deepening of engineering practice, their limitations have gradually become apparent. Because they are mainly designed for horizontal earthquakes, under strong earthquakes, vertical seismic acceleration may cause the superstructure to lift instantaneously, causing the bearings to detach, which in turn leads to catastrophic consequences such as bearing failure and beam collapse. Summary of the Invention

[0004] This utility model is proposed to solve the problems existing in the prior art. Its purpose is to provide a support with vertical seismic resistance to prevent structural failure after the structure is detached.

[0005] The technical solution of this utility model is: a support with vertical seismic resistance to prevent structural failure after delamination, including an upper support plate, the lower end of the upper support plate is concave to form an upper spherical groove, and the lower end of the upper support plate forms a horizontal limiting baffle. The horizontal limiting baffle limits the spherical crown liner. When the upper support plate is in a lateral or raised state, the spherical crown liner is inside the horizontal limiting baffle, thus avoiding structural failure during vertical earthquakes.

[0006] Furthermore, the horizontal limiting baffle is located at the opening of the upper spherical groove.

[0007] Furthermore, the lower edge of the horizontal limiting baffle does not contact the upper end of the lower support plate.

[0008] Furthermore, the upper end of the lower support plate is recessed to form a lower spherical groove, and the spherical crown liner is located between the upper spherical groove and the lower spherical groove.

[0009] Furthermore, the distance between the inner walls of the horizontal limiting baffle is less than the width of the lower spherical groove, meaning that the vertical projection of the horizontal limiting baffle falls into the lower spherical groove.

[0010] Furthermore, the spherical crown liner and the upper spherical groove of the upper support plate form an upper friction pair.

[0011] Furthermore, the spherical crown liner and the lower spherical groove of the lower support plate form a lower friction pair.

[0012] Furthermore, the extension line of the horizontal limiting baffle is perpendicular to the upper end face of the upper support plate.

[0013] The beneficial effects of this utility model are as follows: In this invention, a horizontal limiting baffle is provided at the bottom of the upper support plate. The limiting function of the horizontal limiting baffle is used to prevent the spherical crown liner from shifting and causing the support structure to fail when the vertical seismic response is too large and the support becomes detached.

[0014] This utility model is characterized by its simple structure, reliable performance, safety and durability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the support structure of this utility model; Figure 2 This is a schematic diagram of the support state under the horizontal limit displacement of this utility model; Figure 3 This is a schematic diagram of the support state when the upper support is lifted due to a vertical earthquake, according to this utility model. Figure 4 This is a schematic diagram of the contact area between the horizontal limiting baffle and the spherical crown liner of this utility model under horizontal limit displacement. in: 1 Upper support plate 2 Upper friction pair 3. Spherical crown liner 4. Lower friction pair 5 Lower support plate 6 Horizontal limit baffle 7. Support body. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 4 As shown, a support with vertical seismic resistance to prevent structural failure after detachment includes an upper support plate 1. The lower end of the upper support plate 1 is concave to form an upper spherical groove. The lower end of the upper support plate 1 forms a horizontal limiting baffle 6. The horizontal limiting baffle 6 limits the spherical crown liner 3. When the upper support plate 1 is in a lateral or raised state, the spherical crown liner 3 is inside the horizontal limiting baffle 6, thus avoiding structural failure during vertical earthquakes.

[0017] The horizontal limiting baffle 6 is located at the opening of the upper spherical groove.

[0018] The lower edge of the horizontal limiting baffle 6 is not in contact with the upper end of the lower support plate 5.

[0019] The lower support plate 5 has an inwardly recessed upper end to form a lower spherical groove, and the spherical crown liner 3 is located between the upper spherical groove and the lower spherical groove.

[0020] The distance between the inner walls of the horizontal limiting baffle 6 is less than the width of the lower spherical groove, that is, the vertical projection of the horizontal limiting baffle 6 falls in the lower spherical groove.

[0021] The spherical crown liner 3 and the upper spherical groove of the upper support plate 1 form an upper friction pair 2.

[0022] The spherical crown liner 3 and the lower spherical groove of the lower support plate 5 form a lower friction pair 4.

[0023] The extension line of the horizontal limiting baffle 6 is perpendicular to the upper end face of the upper support plate 1.

[0024] Specifically, the lower spherical groove is located within the rectangular groove of the lower support plate 5, and the lower spherical groove is connected to the groove wall of the rectangular groove.

[0025] Specifically, the upper friction pair 2 between the upper support plate 1 and the spherical crown liner 3 and the lower friction pair 4 between the lower support plate 5 and the spherical crown liner 3 are both spherical friction pairs.

[0026] More specifically, both the upper friction pair 2 and the lower friction pair 4 are made of stainless steel sliding plates and wear-resistant plates. The wear-resistant plates are made of modified polytetrafluoroethylene plates and modified ultra-high molecular weight polyethylene plates, which have excellent sliding wear resistance, long service life, safe and stable operation, and good economic durability.

[0027] like Figure 2 As shown, when the support body 7 reaches its limit displacement, the horizontal limiting baffle 6 of the upper support plate 1 contacts the spherical crown liner 3, preventing the spherical crown liner 3 from shifting under gravity. The schematic diagram of the contact area between the horizontal limiting baffle 6 and the spherical crown liner 3 is shown below. Figure 4 As shown.

[0028] like Figure 3 As shown, when the support body 7 reaches its maximum design displacement, the vertical seismic action causes the upper support plate 1 to lift upward. Under the limiting action of the horizontal limiting baffle 6, the spherical crown liner 3 and the upper support plate 1 are prevented from horizontally displacing relative to each other, ensuring that the upper support plate 1 is directly above the spherical crown liner 3 when it falls back due to gravity, thus preventing the support structure from failing due to vertical ground motion and playing a role in preventing voiding.

[0029] Specifically, the support body 7 can be a seismic isolation spherical support, a spherical support, or a cylindrical support.

[0030] In this invention, a horizontal limiting baffle is provided at the bottom of the upper support plate. The limiting function of the horizontal limiting baffle is used to prevent the spherical crown liner from shifting and causing the support structure to fail when the vertical seismic response is too large and the support becomes detached.

[0031] This utility model is characterized by its simple structure, reliable performance, safety and durability.

Claims

1. A support with vertical seismic resistance to prevent structural failure after detachment, comprising an upper support plate (1), characterized in that: The lower end of the upper support plate (1) is recessed to form an upper spherical groove, and the lower end of the upper support plate (1) forms a horizontal limiting baffle (6). The horizontal limiting baffle (6) limits the spherical crown liner (3). When the upper support plate (1) is in a lateral or raised state, the spherical crown liner (3) is inside the horizontal limiting baffle (6) to avoid structural failure in vertical earthquakes.

2. The support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 1, is characterized in that: The horizontal limiting baffle (6) is located at the opening of the upper spherical groove.

3. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 2, characterized in that: The lower edge of the horizontal limiting baffle (6) is not in contact with the upper end of the lower support plate (5).

4. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 3, characterized in that: The lower support plate (5) has an inwardly recessed upper end to form a lower spherical groove, and the spherical crown liner (3) is located between the upper spherical groove and the lower spherical groove.

5. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 4, characterized in that: The distance between the inner walls of the horizontal limiting baffle (6) is less than the width of the lower spherical groove, that is, the vertical projection of the horizontal limiting baffle (6) falls in the lower spherical groove.

6. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 4, characterized in that: The spherical crown liner (3) and the upper spherical groove of the upper support plate (1) form an upper friction pair (2).

7. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 4, characterized in that: The spherical crown liner (3) and the lower spherical groove of the lower support plate (5) form a lower friction pair (4).

8. A support with vertical seismic resistance to prevent structural failure after detachment, as described in claim 1, characterized in that: The extension line of the horizontal limiting baffle (6) is perpendicular to the upper end face of the upper support plate (1).

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