Lead core seam-reserved type laminated rubber support device

Abstract

The utility model discloses a lead core seam reserving type laminated rubber support device. The horizontal gap is formed in the top of the lead core, so that the vertical dynamic stiffness of the support is reduced to a certain extent, the vertical vibration response is effectively improved, and the vertical vibration reduction requirement of a high-requirement building is met. And the vertical dynamic stiffness is reduced, meanwhile, the horizontal bearing capacity and the energy dissipation capacity of the support are kept, and it is ensured that the horizontal seismic isolation effect is excellent. According to the improvement, only the structural size is simply adjusted, and good economical efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building shock absorption technical field more specifically, the utility model relates to a kind of lead core gap type laminated rubber bearing device. BACKGROUND

[0002] Laminated lead rubber bearing is widely used in seismic design of building structure, which can significantly reduce the influence of horizontal seismic force on building structure. It realizes horizontal flexibility and vertical bearing through the superposition of rubber layer and steel plate layer, and the lead core provides damping energy dissipation.

[0003] In traditional design, lead core participates in vertical force transmission of bearing, which significantly improves the vertical dynamic stiffness of bearing, thereby adversely affecting vertical micro-vibration control. In the case of strong environmental vibration such as rail transit, excessive vertical dynamic stiffness may cause amplification of structure vibration, affecting the service life of structure and the comfort of personnel.

[0004] The prior art mainly focuses on reducing the vertical dynamic stiffness of the bearing. Some studies attempt to achieve this goal by adjusting the diameter of the lead core or increasing the thickness of the rubber layer, but these methods often affect the horizontal seismic performance of the bearing, increasing the difficulty of bearing design. Some other studies focus on adding additional structures or components, but these methods not only complicate the overall design of the bearing, but also significantly increase the cost. SUMMARY

[0005] The utility model overcomes the deficiency of high cost in improving vertical vibration control performance in the prior art, and provides a lead core gap type laminated rubber bearing device, in order to solve the above problems.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A lead core gap type laminated rubber bearing device, comprising an upper sealing plate, a rubber layer, a steel plate layer, a lead core, and a lower sealing plate.

[0008] The rubber layer and the steel plate layer are provided with mounting holes matching the shape of the lead core. The rubber layer and the steel plate layer have multiple layers and are alternately stacked on the lower sealing plate. The lead core is pressed into the mounting hole.

[0009] The upper sealing plate is installed on the upper part of the rubber layer and the steel plate layer. The upper sealing plate is provided with a groove matching the cross-sectional shape of the lead core. The lead core is partially inserted into the groove, but the top part maintains a certain distance from the bottom of the groove, forming a horizontal gap.

[0010] The rubber layer and the steel plate layer are alternately stacked to form the main structure of the bearing. The rubber layer provides horizontal elastic deformation capacity and restoring force, as well as vertical support capacity. The steel plate layer provides vertical bearing capacity and constrains the rubber layer.

[0011] The lead core is located in the center of the support and provides plastic energy dissipation capacity in the horizontal deformation process, while providing necessary horizontal stiffness for the support;

[0012] The upper sealing plate and the lower sealing plate are fixedly connected with the rubber layer and the steel plate layer, and are mainly used for bearing and transmitting vertical pressure;

[0013] The lead core horizontal gap ensures that the lead core does not directly contact the upper sealing plate under vertical micro-vibration working conditions, so that the vertical dynamic stiffness of the support is reduced to a certain extent, and the vertical vibration control capacity of the support is improved.

[0014] By arranging the lead core horizontal gap between the lead core and the upper sealing plate, the vertical dynamic stiffness of the support is reduced, so that the vertical vibration control performance is improved, and excellent horizontal mechanical performance is maintained. The vertical vibration isolation performance of the existing laminated lead core rubber support is improved through simple structure. In the ordinary laminated lead core rubber support, the vertical dynamic stiffness can be reduced by about 15%; in the thick laminated lead core rubber support, the vertical dynamic stiffness can be reduced by about 20%-30%.

[0015] Further, the rubber support device further comprises a flexible buffer layer.

[0016] The flexible buffer layer is arranged in the recess of the upper sealing plate, and the thickness of the flexible buffer layer is less than the height of the horizontal gap.

[0017] The flexible buffer layer is used to reduce the impact force generated when the lead core directly contacts the upper sealing plate under vertical large vibration working conditions, but the horizontal gap must be retained.

[0018] Further, the rubber support device further comprises a connecting plate.

[0019] The connecting plate is arranged above the upper sealing plate and below the lower sealing plate.

[0020] The connecting plate is provided with a connecting device.

[0021] The connecting plate is used for connecting the support device and the building structure.

[0022] Further, the connecting device is an anchor bolt.

[0023] Compared with the prior art, the utility model has at least the following beneficial effects: the utility model discloses a horizontal gap arranged at the top of the lead core, which reduces the vertical dynamic stiffness of the support to a certain extent, effectively improves the vertical vibration response, and meets the vertical vibration reduction demand of high requirement buildings. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall appearance view of the utility model;

[0025] Figure 2 It is the cross section structure schematic view of the utility model;

[0026] Figure 3 It is the cross section structure schematic view of the lead core part in one embodiment of the utility model;

[0027] Figure 4 It is the cross section structure schematic view of the lead core part in another embodiment of the utility model.

[0028] In the figure, 1 - rubber layer, 2 - steel plate layer, 3 - lead core, 4 - upper sealing plate, 5 - lower sealing plate, 6 - connecting plate, 7 - lead core horizontal gap, 8 - flexible buffer layer, 9 - connecting bolt, 10 - anchoring bolt. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and embodiments.It should be understood that the specific embodiments described here are only used to explain the utility model and not used to limit the utility model.

[0030] A lead core 3 gap type laminated rubber support device, see Figure 1 、 Figure 2 , comprising, upper sealing plate 4, rubber layer 1, steel plate layer 2, lead core 3, lower sealing plate 5, connecting plate 6;

[0031] The rubber layer 1, steel plate layer 2 is provided with the mounting hole matched with the shape of lead core 3, and the rubber layer 1, steel plate layer 2 has multiple layers, which are alternately overlapped on the lower sealing plate 5, and the lead core 3 is pressed into the mounting hole;

[0032] It should be noted that the material, thickness and quantity of the rubber layer 1 and the steel plate layer 2 can be designed according to the actual needs of the project to obtain different support horizontal bearing capacity and deformation capacity;

[0033] The cross-sectional size of the lead core 3 can also be designed to obtain different support horizontal stiffness and energy dissipation capacity.

[0034] The upper sealing plate 4 is installed on the upper part of the rubber layer 1 and the steel plate layer 2, and the upper sealing plate 4 is provided with a groove matched with the cross-sectional shape of the lead core 3, see Figure 3 , and the lead core 3 is partially inserted into the groove but the top part keeps a certain distance from the bottom of the groove to form a horizontal gap.

[0035] The connecting plate 6 is installed above the upper sealing plate 4 and below the lower sealing plate 5.

[0036] The connecting device is arranged on the connecting plate 6.

[0037] In the embodiment, the connecting device is an anchor bolt 10, and a threaded hole is arranged on the connecting plate 6, and the anchor bolt 10 is fixed through the threaded hole.

[0038] The connecting plate 6 is provided with a threaded hole corresponding in position to the upper sealing plate 4 and the lower sealing plate 5, and the connecting plate 6 is connected with the upper sealing plate 4 and the lower sealing plate 5 by using a connecting bolt 9.

[0039] In the preferred embodiment, referring to Figure 4 The flexible buffer layer 8 is arranged in the groove of the upper sealing plate 4, and the thickness of the flexible buffer layer 8 is less than the height of the horizontal gap.

[0040] In use, the laminated rubber bearing device has been assembled, and is transported to the construction site for installation.

[0041] The construction process includes lower pier (column) concrete construction, lower embedded plate installation, isolation bearing installation, upper embedded plate installation and isolation layer concrete construction. The lower pier (column) concrete is poured or grouted twice to ensure the accurate positioning and installation of the lower embedded plate. The lower embedded plate installation is positioned and adjusted by measuring instruments to calibrate the level and elevation, and the concrete compactness is strengthened during the secondary construction.

[0042] After the concrete reaches the design strength, the bearing is placed at the predetermined position of the foundation according to the design drawing by using a lifting tool, the anchor bolt 10 of the bearing and the lower embedded plate is tightened, and the torque is ensured to meet the standard.

[0043] After the bearing is installed, the upper embedded plate is hoisted and placed on the top surface of the bearing, the anchor bolt 10 of the bearing and the upper embedded plate is tightened, and the torque is ensured to meet the standard. After the upper embedded plate is installed, the isolation layer concrete construction including the upper pier (column) is carried out.

[0044] Although the utility model has been described herein with reference to the explanatory embodiments thereof, it should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the disclosure. More specifically, many variations and modifications of the components and / or layout of the subject combination layout can be made within the scope of the disclosure. In addition to the variations and modifications of the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A lead core gap type laminated rubber bearing device, characterized by, It comprises an upper sealing plate, a rubber layer, a steel plate layer, a lead core and a lower sealing plate. The rubber layer and the steel plate layer are provided with mounting holes matching the shape of the lead core, and the rubber layer and the steel plate layer are alternately stacked on the lower sealing plate, and the lead core is pressed into the mounting hole. The upper sealing plate is installed on the upper part of the rubber layer and the steel plate layer, and the upper sealing plate is provided with a groove matching the cross-sectional shape of the lead core, and the lead core is partially inserted into the groove but the top part keeps a certain distance from the bottom of the groove to form a horizontal gap.

2. A lead core caulked laminated rubber bearing device according to claim 1, wherein It further comprises a flexible buffer layer. The flexible buffer layer is arranged in the groove of the upper sealing plate, and the thickness of the flexible buffer layer is less than the height of the horizontal gap.

3. A lead core caulked laminated rubber bearing device according to claim 1, wherein It further comprises a connecting plate. The connecting plate is installed above the upper sealing plate and below the lower sealing plate. The connecting plate is provided with a connecting device.

4. A lead and cured rubber lami nated bearing device according to claim 3, wherein The connecting device is an anchor bolt.

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