A replaceable energy-absorbing and shock-absorbing composite bearing

Abstract

The present invention relates to a replaceable energy-absorbing and shock-absorbing composite bearing, which includes an upper connecting plate, a lower connecting plate, a laminated rubber elastomer, a disc spring combination element and a mild steel energy-absorbing rod; the two ends of the laminated rubber elastomer are respectively connected to the upper and lower connecting plates, and a cylindrical center hole is provided in the center of the laminated rubber elastomer; the disc spring combination element is placed in the center hole of the laminated rubber elastomer; and a mild steel energy-absorbing rod is installed in the center of the disc spring combination element. The vertical compressive strength of the bearing of this patent is jointly borne by the laminated rubber elastomer and the disc spring combination element, and the disc spring combination element has good buffering and vibration absorption capabilities; the horizontal bearing capacity is borne by the laminated rubber elastomer; the mild steel energy-absorbing rod provides sufficient tensile strength for the bearing, and also plays a role in dissipating seismic energy. The bearing of this patent has strong tensile and compressive strength, significant energy-absorbing and shock-absorbing effects, strong fatigue resistance, and great promotion value.

Description

Technical Field

[0001] The invention belongs to the field of energy dissipation and shock absorption control of building structures, and in particular relates to a replaceable energy dissipation and shock absorption composite support. Background Art

[0002] In recent years, shock-absorbing and seismic isolation bearings have been widely used in high-rise building structures, bridge structures and large-span space structures. It is a relatively mature vibration control measure to reduce the seismic response of the structure by installing shock-absorbing and seismic isolation devices at the base or other parts of the building structure.

[0003] As the most common seismic isolation bearing, laminated rubber bearing is widely used in the vibration control mechanism of the structure. The bearing can not only bear the constant load of the building, but also has good horizontal deformation capacity and damping energy dissipation capacity, so it can effectively isolate the building from the horizontal action of the earthquake. However, the tensile capacity of the existing laminated rubber seismic isolation bearing is relatively poor, and the earthquake itself has multi-dimensional characteristics, especially for large-span and high-rise buildings, vertical tensile stress occurs under the action of a large earthquake. Therefore, the vertical stiffness of the bearing should be reasonably designed, that is, to meet the requirements of vertical bearing capacity, and to have a significant energy dissipation and shock absorption effect to reduce the seismic response. Summary of the invention

[0004] Technical problem: In view of the shortcomings of the prior art, the purpose of the present invention is to provide a replaceable energy-absorbing and shock-absorbing composite bearing to improve the tensile strength and energy-absorbing capacity of the traditional laminated rubber bearing.

[0005] Technical solution: A replaceable energy-absorbing and shock-absorbing composite bearing, which includes an upper connecting plate, a lower connecting plate, a laminated rubber elastomer, a disc spring combination element and a mild steel energy-absorbing rod, characterized in that: a cylindrical center hole is provided on the center line of the laminated rubber elastomer, and is bolted together with the upper and lower connecting plates through upper and lower inner sealing steel plates; a disc spring combination element is arranged in the cylindrical center hole, and the height of the disc spring combination element is the same as that of the laminated rubber elastomer; the mild steel energy-absorbing rod is placed in the center hole of the disc spring combination element, and is fixed to the upper and lower connecting plates by welding or bolting.

[0006] The laminated rubber body is cylindrical and has a cylindrical center hole along the center line. The laminated rubber elastic body includes upper and lower inner sealing steel plates, a rubber layer and a thin steel plate layer. The rubber layer and the thin steel plate layer are alternately stacked to form a laminated layer. The laminated layer is vulcanized together with the upper and lower inner sealing steel plates, and a rubber protective layer is provided on the outside.

[0007] The disc spring combination element is a disc spring connected by overlapping and matching, which provides sufficient bearing capacity and deformation capacity for the support. The disc spring has good buffering and vibration absorption capabilities, and the disc spring is used to provide restoring force.

[0008] The soft steel energy dissipation rods are low yield point soft steel rods, which can be of equal cross-section or variable cross-section, and can also be arranged in an array form as needed; the soft steel energy dissipation rods can provide sufficient tension for the bearings, overcoming the disadvantage of low tensile strength of traditional bearings, and relative to the main structure, the soft steel with a low yield point can enter the yield state earlier, dissipate seismic energy, and avoid premature damage to the main structure.

[0009] The upper connecting plate and the lower connecting plate are both of square structure, and the thickness thereof is greater than the thickness of the thin steel plate layer inside the laminated rubber.

[0010] The beneficial effects of the present invention are:

[0011] The replaceable energy-absorbing and shock-absorbing composite bearing described in the present invention is composed of a traditional laminated rubber bearing by adding a disc spring combination element and a soft steel energy-absorbing rod to the laminated rubber elastomer, thereby improving the disadvantage of low tensile strength of the traditional laminated rubber bearing. At the same time, the soft steel energy-absorbing rod has balanced energy absorption capacity in all directions, a large yield area, strong energy absorption capacity, and a simple structure and easy processing. The built-in spring combination element utilizes the variable stiffness characteristics of the disc spring to achieve better energy absorption and shock absorption effects.

[0012] The present invention is applicable to existing and newly-built shear wall structures of high-rise buildings. When damaged after an earthquake, the shear wall structure can be directly replaced, which is convenient and quick, and can quickly restore the use function, thus having a high promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a specific implementation structure of a replaceable energy-absorbing and shock-absorbing composite bearing;

[0014] Figure 2 A top view of a replaceable energy-absorbing and shock-absorbing composite bearing;

[0015] Figure 3 It is an AA cross-sectional view of a replaceable energy-absorbing and shock-absorbing composite bearing;

[0016] In the figure, 1-upper connecting plate, 2-lower connecting plate, 3-laminated rubber elastomer, 301-rubber layer, 302-thin steel plate layer, 303-upper inner sealing steel plate, 304-lower inner sealing steel plate, 305-rubber protective layer, 4-disc spring combination element, 5-mild steel energy dissipation rod, 6-upper connecting plate countersunk bolts, 7-lower connecting plate countersunk bolts, 8-reserved holes, 9-bolt connection or welding. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings so that the public can better grasp the implementation means of the present invention and fully understand the beneficial effects of the present invention.

[0018] See also Figures 1 to 3The replaceable energy-absorbing and shock-absorbing composite bearing described in the present invention is composed of an upper connecting plate (1), a lower connecting plate (2), a laminated rubber elastic body (3), a disc spring assembly element (4) and a mild steel energy-absorbing rod (5), wherein the laminated rubber elastic body (3), the disc spring assembly element (4) and the mild steel energy-absorbing rod (5) are clamped between the upper connecting plate (1) and the lower connecting plate (2). The laminated rubber body clamped between the upper connecting plate (1) and the lower connecting plate (2) is composed of a rubber layer (301) and a thin steel plate layer (302) alternately stacked and then molded and vulcanized, and then vulcanized together with an upper inner sealing steel plate (303) and a lower inner sealing steel plate (304), and a rubber protective layer (305) is provided on the outside. A cylindrical central hole is provided in the center of the laminated rubber elastic body, and the hole diameter is larger than the outer diameter of the disc spring assembly element (4). The disc spring assembly element (4) is placed in the central columnar hole of the laminated rubber elastic body (3). The disc springs are stacked together in a superimposed and matched form and fixed in the middle with a copper tube. The inner diameter of the disc spring is slightly larger than the outer diameter of the copper tube. In this way, the chamfers of the upper and lower disc springs are used and fixed with a special mold and a hydraulic press. This disc spring assembly method improves the utilization efficiency of the disc spring assembly element and also plays a guiding role. The height of the disc spring assembly element (4) should be the same as the height of the laminated rubber elastic body (3). The disc spring assembly element provides sufficient bearing capacity and deformation through superposition and matching. According to the specific design load, the height of the two can be coordinated by adjusting the thickness of the inner sealing plate in the laminated rubber elastic body. The soft steel energy dissipation rod (5) is made of low yield point soft steel and can be of equal cross-section or variable cross-section. The number of arrangements depends on the tensile strength of the entire support. The soft steel rod and the upper and lower connecting plates can be fixed by bolting or welding.

[0019] See also Figures 1 to 3 The upper connecting plate (1) is connected to the upper inner sealing steel plate (303) in the laminated rubber elastic body (3) through countersunk bolts (6); and the lower connecting plate (2) is connected to the lower inner sealing steel plate (304) in the laminated rubber elastic body (3) through countersunk bolts (7).

[0020] See also Figures 1 to 3 The upper connecting plate (1) and the lower connecting plate (2) are provided with reserved holes (8) around them, and are connected to the main building by inserting high-strength bolts into the reserved holes. Usually, an internal threaded sleeve is embedded when the main building is cast, and then the support is connected to the main building with high-strength bolts. This connection method is convenient for replacing the support.

[0021] See also Figures 1 to 3 The soft steel energy dissipation rod (5) can be connected to the upper connecting plate (1) and the lower connecting plate (2) by countersunk bolts. When bolt connection is adopted, attention should be paid to ensuring the anchoring length of the soft steel rod, and the thickness of the upper and lower connecting plates should be considered in combination with the anchoring length. Welding can also be adopted, using the perforated plug welding technology, and attention should be paid to meeting the structural requirements of welding.

[0022] The above description is only an engineering example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A replaceable energy-absorbing and shock-absorbing composite bearing, comprising an upper connecting plate (1), a lower connecting plate (2), a laminated rubber elastic body (3), a disc spring assembly element (4) and a mild steel energy-absorbing rod (5), characterized in that: The laminated rubber elastic body (3) is provided with a cylindrical central hole on the center line, and is fixed together with the upper connecting plate (1) and the lower connecting plate (2) by bolts through the upper inner sealing steel plate (303) and the lower inner sealing steel plate (304); a disc spring assembly element (4) is arranged in the cylindrical central hole, and the height of the disc spring assembly element (4) is the same as that of the laminated rubber elastic body (3); the soft steel energy dissipation rod (5) is placed in the central hole of the disc spring assembly element (4), and is fixed to the upper connecting plate (1) and the lower connecting plate (2) by welding or bolting; the laminated rubber elastic body (3) is cylindrical and has a central hole along the center line. A cylindrical central hole is provided on the upper surface, and the laminated rubber elastic body (3) includes an upper inner sealing steel plate (303) and a lower inner sealing steel plate (304), a rubber layer (301) and a thin steel plate layer (302). The rubber layer (301) and the thin steel plate layer (302) are alternately laminated to form a laminated layer, and the laminated layer is vulcanized together with the upper inner sealing steel plate (303) and the lower inner sealing steel plate (304), and a rubber protective layer (305) is provided on the outside; the disc spring combination element (4) is a disc spring connected by overlapping and matching, providing bearing capacity and deformation for the support, and the disc spring has a buffering and vibration absorbing capability, and the disc spring is used to provide a restoring force.

2. The replaceable energy dissipation and shock absorbing composite bearing according to claim 1 is characterized in that: The soft steel energy dissipation rods (5) are low yield point soft steel rods, arranged with equal cross-section or variable cross-section, and arranged in an array form as required; the soft steel energy dissipation rods (5) can provide tension for the support, overcoming the disadvantage of low tensile strength of traditional supports, and relative to the main structure, the soft steel with a low yield point can enter the yield state earlier, dissipate earthquake energy, and avoid premature damage to the main structure.

3. The replaceable energy dissipation and shock absorbing composite bearing according to claim 1 is characterized in that: The upper connecting plate (1) and the lower connecting plate (2) are both square structures, and their thickness is greater than the thickness of the thin steel plate layer (302) inside the laminated rubber.

Images