Low-cost shearing-rolling rubber shock insulation support

Abstract

The utility model discloses a low-cost shearing-rolling rubber shock insulation support which comprises an inner support body, an outer support body, an upper bolt and a lower bolt, the upper bolt and the lower bolt are embedded in an upper buttress and a lower buttress respectively, when a small earthquake occurs, the upper bolt and the lower bolt drive the support body to be subjected to shearing deformation to consume earthquake energy, and when a large earthquake occurs, the upper bolt and the lower bolt drive the support body to be subjected to rolling deformation to consume earthquake energy. The support can roll to a certain extent besides shear deformation, the horizontal rigidity of the shock insulation layer is further reduced, the earthquake action is reduced, and therefore the aim of effectively isolating or weakening the earthquake action in stages under the two mechanisms is achieved, and the structure is protected against earthquake damage is achieved. The shearing-rolling rubber shock insulation support can meet the requirements for reliability, stability and safety of low houses in villages and towns under the action of earthquakes; the utility model has the characteristics of simple structure, short production cycle, low cost, lightness and convenience, is convenient to construct and transport, and has wide application prospect.

Description

Technical Field

[0001] The utility model relates to a low-cost shear-rolling rubber seismic isolation support, belonging to the technical field of building engineering seismic isolation. Background Art

[0002] Seismic isolation technology is an effective way to improve building safety, reduce building damage, avoid casualties and secondary disasters, and reduce direct and indirect losses caused by earthquake disasters. Rubber seismic isolation technology has become mature and has been widely used in new buildings (especially hospitals and schools) and reinforcement and renovation of existing buildings in China. In recent years, with the increasing frequency of earthquakes, especially in rural areas, the collapse and damage of buildings and the degree of casualties are much more serious than in cities, and the phenomenon of "small earthquakes and big disasters" has occurred from time to time. In the Wenchuan, Lushan, and Yushu earthquakes, the houses that were damaged and collapsed were basically rural buildings, except for urban buildings that were built a long time ago, had not been seismically reinforced, or had major problems with construction quality. Among them, masonry structures in rural buildings were severely damaged by earthquakes, causing a large proportion of casualties. Therefore, the overall seismic performance of rural building structures directly affects the overall ability of earthquake resistance and disaster prevention.

[0003] At present, the high cost of traditional seismic isolation rubber bearings, relatively complex construction, and high transportation costs have increased the cost of rural housing construction to a certain extent, limiting its application in rural construction. Therefore, further research on low-cost rubber seismic isolation bearings has become an urgent problem to be solved. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a low-cost shear-rolling rubber seismic isolation bearing, which consumes and isolates seismic energy when an earthquake occurs, thereby improving the seismic safety of buildings.

[0005] The utility model adopts the following technical solutions:

[0006] A novel low-cost shear-rolling rubber seismic isolation bearing comprises an inner bearing and an outer bearing. A through hole is arranged at the center of the outer bearing, and the inner bearing is placed in the through hole at the center of the outer bearing. The inner bearing comprises an upper sealing plate, a lower sealing plate, a multi-layer steel plate, and a multi-layer rubber I. After the multi-layer steel plate and the multi-layer rubber I are alternately stacked, an upper sealing plate is arranged on the topmost layer of rubber, and a lower sealing plate is arranged at the bottom of the bottommost layer of rubber; the outer bearing comprises a multi-layer curtain cloth and a multi-layer rubber II. The curtain cloth and the rubber II are alternately stacked, and the inner bearing and the outer bearing are vulcanized as a whole. The rubber I is firmly bonded to the steel plate, the upper sealing plate, the lower sealing plate and the conventional seismic isolation bearing, the curtain cloth and the rubber II are also firmly bonded to each other, and the inner bearing and the outer bearing are firmly bonded to each other.

[0007] The novel low-cost shear-rolling rubber seismic isolation bearing also includes an upper bolt and a lower bolt. A bolt hole is arranged at the center of the upper cover plate at the top of the inner bearing, and the upper bolt is drilled into the bolt hole. A bolt hole is arranged at the center of the bottom of the lower cover plate at the bottom of the inner bearing, and the lower bolt is drilled into the bolt hole. The shear-rolling rubber seismic isolation bearing is connected with the lower pier and the upper pier through the upper bolt and the lower bolt to form a seismic isolation system. One end of the nut of the upper bolt and the lower bolt is inserted into the building structure to fix the installation of the rubber seismic isolation bearing.

[0008] The curtain fabric can be replaced by materials such as carbon fiber, glass fiber, etc.

[0009] The outer diameter of the inner support is circular or square, and the outer diameter of the outer support is circular or square.

[0010] The working principle of the low-cost shear-rolling rubber seismic isolation bearing of the utility model is as follows: when subjected to an earthquake, the seismic energy is transmitted to the rubber seismic isolation bearing, and the rubber seismic isolation bearing starts to work, and deforms horizontally with the action of the earthquake to consume the seismic energy, which can effectively isolate or weaken the transmission of the earthquake to the upward structure and protect the safety of the building structure.

[0011] The outer support of the utility model is made of alternately stacked curtain cloth and rubber. The curtain cloth can be flexibly replaced with carbon fiber, glass fiber and other materials. The curtain cloth, carbon fiber, glass fiber and other materials are highly flexible and lighter in weight, and have more advantages in consuming seismic force.

[0012] The rubber seismic isolation support of the utility model is connected to the building structure by bolts, which makes installation easier; the bolt cap is inserted into the building structure, so that the connection ability between the seismic isolation support and the structure is stronger.

[0013] The inner support of the utility model is formed by stacking steel plates and rubber, which can provide greater shear resistance, consume energy by displacing in the horizontal direction with the horizontal earthquake action, play the role of reducing the earthquake response horizontally and protect the safety of the structure.

[0014] The rubber seismic isolation bearing of the utility model has a simple structure, stable performance, convenient production and simple construction. The bearing specifications can be flexibly adjusted in design according to the use requirements of the building, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the low-cost shear-rolling rubber seismic isolation bearing (square) of the utility model;

[0016] Figure 2 This is a cross-sectional view of the low-cost shear-rolling rubber seismic isolation bearing (square) of the utility model;

[0017] Figure 3 This is an exploded view of the low-cost shear-roll rubber seismic isolation bearing (square) of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model after the low-cost shear-rolling rubber seismic isolation bearing (square) is installed;

[0019] Figure 5 It is a three-dimensional schematic diagram of the low-cost shear-rolling rubber seismic isolation bearing (circular) of the utility model;

[0020] Figure 6 This is an exploded view of the low-cost shear-rolling rubber seismic isolation bearing (circular) of the utility model;

[0021] In the figure: 1-upper bolt, 2-lower bolt, 3-rubber I, 4-curtain cloth, 5-upper sealing plate, 6-lower sealing plate, 7-steel plate, 8-lower pier, 9-upper pier, 10-rubber II. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1

[0024] A low-cost square shear-rolling rubber isolation bearing, such as Figure 1 , 2 As shown in , 3, and 4, it includes an inner support and an outer support. The inner support and the outer support have equal heights. The outer diameters of the inner support and the outer support are both square. A through hole is set in the center of the outer support. The through hole is a square hole. The inner support is placed in the central through hole of the outer support. The inner support includes an upper sealing plate 5, a lower sealing plate 6, a multi-layer steel plate 7, and a multi-layer rubber Ⅰ3. After the multi-layer steel plate 7 and the rubber Ⅰ3 are alternately stacked, an upper sealing plate 5 is set on the top layer of rubber, and a lower sealing plate 6 is set at the bottom of the bottom layer of rubber; the outer support includes a multi-layer cord 4 and a multi-layer rubber Ⅱ10. Multiple layers of cord 4 and rubber II 10 are alternately stacked; the inner support and the outer support are integrally vulcanized, and the rubber I3, the steel plate, the upper sealing plate and the lower sealing plate are firmly bonded to each other after vulcanization, just like the conventional seismic isolation support, the cord and the rubber II 10 are also firmly bonded to each other after vulcanization, and the inner support and the outer support are also firmly bonded to each other; when vulcanizing, first fill the lower sealing plate, the multiple layers of steel plates, the multiple layers of rubber I 3 and the upper sealing plate of the inner support according to the structure, and then fill the multiple layers of cord and the multiple layers of rubber II 10 of the outer support, and then vulcanize;

[0025] A bolt hole is set at the center of the upper cover plate 5 on the top of the inner support, and the upper bolt 1 is drilled into the bolt hole; a bolt hole is set at the center of the bottom of the lower cover plate 6 at the bottom of the inner support, and the lower bolt 2 is drilled into the bolt hole. The shear-rolling rubber seismic isolation bearing is connected with the lower pier 8 and the upper pier 9 through the upper bolt and the lower bolt to form a seismic isolation system. One end of the nut of the upper bolt 1 and the lower bolt 2 is inserted into the building structure to complete the installation and fixation of the shear-rolling rubber seismic isolation bearing.

[0026] The specific construction of the new shear-rolling rubber isolation bearing in this embodiment is as follows: Figure 5 As shown:

[0027] First, when the concrete of the lower pier 8 is in the initial setting stage, after positioning the center of the location where the seismic isolation bearing needs to be installed, the lower bolt 2 is pre-embedded and inserted, and the plane here is manually leveled to ensure the horizontality of the bearing installation location and the accuracy of the position of the lower bolt 2 and the verticality of the bolt;

[0028] Then, when the concrete curing strength reaches more than 75% of the design strength, the rubber seismic isolation bearing can be installed, and the lower bolts 2 on the lower pier 8 are connected with the bolt holes of the lower sealing plate 6 to complete the fixed connection between the lower pier 8 and the shear-rolling rubber seismic isolation bearing;

[0029] Finally, the upper pier 9 is reinforced with concrete and the upper bolt 1 is poured into the upper pier 9 to complete the installation of the shear-rolling rubber isolation bearing.

[0030] The working principle of the bearing of this embodiment is as follows: when subjected to a smaller earthquake, driven by the upper bolt 1 and the lower bolt 2, shear deformation occurs on the upper and lower sides of the bearing to consume the earthquake energy. When subjected to a larger earthquake, in addition to shear deformation, the outer bearing can also produce a certain rolling due to the absence of a hard steel plate, further reducing the horizontal stiffness of the isolation layer and reducing the earthquake effect. Effective isolation or weakening of the earthquake effect is achieved in stages under two mechanisms, thereby protecting the upper building structure from earthquake damage.

[0031] Example 2

[0032] A low-cost circular shear-rolling rubber isolation bearing, such as Figure 5 , 6 As shown, the outer diameters of the inner and outer supports in Example 1 are changed from square to circular, the through hole in the center of the outer support is also changed to circular, and the curtain cloth is replaced with glass fiber; the other components and positional relationships are the same as those in Example 1, and the construction method is the same as that in Example 1.

[0033] The number of the upper bolts 1 and the lower bolts 2 in Embodiment 1 and Embodiment 2 can be multiple or one. In order to save costs, one bolt can be sufficient.

[0034] The above embodiments in combination with the accompanying drawings have been described in detail the specific implementation methods of the utility model, but the utility model is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the utility model.

Claims

1. A low-cost shear-rolling rubber isolation bearing, characterized in that: It includes an inner support and an outer support. A through hole is set in the center of the outer support. The inner support is placed in the through hole in the center of the outer support. The inner support includes an upper sealing plate, a lower sealing plate, a multi-layer steel plate, and a multi-layer rubber I. After the multi-layer steel plate and the multi-layer rubber I are alternately stacked, an upper sealing plate is set on the top layer of rubber, and a lower sealing plate is set at the bottom of the bottom layer of rubber; the outer support includes multi-layer curtain cloth and multi-layer rubber II. The curtain cloth and rubber II are alternately stacked.

2. The low-cost shear-rolling rubber isolation bearing according to claim 1, characterized in that: It also includes an upper bolt and a lower bolt. A bolt hole is arranged at the center of the upper sealing plate at the top of the inner support, and the upper bolt is drilled into the bolt hole; a bolt hole is arranged at the center of the bottom of the lower sealing plate at the bottom of the inner support, and the lower bolt is drilled into the bolt hole.

3. The low-cost shear-rolling rubber isolation bearing according to claim 1, characterized in that: The cord fabric is replaced with carbon fiber or glass fiber.

4. The low-cost shear-rolling rubber isolation bearing according to claim 1, characterized in that: The outer diameter of the inner support is circular or square, and the outer diameter of the outer support is circular or square.

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