Reinforced concrete shock insulation column with L-shaped section

Abstract

The utility model relates to the technical field of buildings, in particular to a reinforced concrete shock insulation column with an L-shaped section, which comprises a reinforced concrete foundation, a shock insulation support and a reinforced concrete column, the reinforced concrete foundation is poured through concrete, and one side of the reinforced concrete foundation is fixedly connected with the shock insulation support; the face, away from the reinforced concrete foundation, of the shock insulation support is connected with the shock insulation support. The cross section of the reinforced concrete column is of an L-shaped structure, a plurality of steel bars are arranged in the reinforced concrete column in the length direction, a connecting steel plate is arranged on the bottom face of the reinforced concrete column, one face of the connecting steel plate is welded to the steel bars, and the other face of the connecting steel plate is connected with the shock insulation support. The reinforced concrete shock insulation column with the L-shaped section can effectively absorb vibration energy of a building, has high shock resistance, and has the effect that the possibility that the reinforced concrete column and a concrete foundation are damaged after being vibrated is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a reinforced concrete L-shaped cross-section seismic isolation column. Background Technology

[0002] With the acceleration of urbanization and the frequent occurrence of earthquakes, the seismic performance of buildings is receiving increasing attention. Some cities in my country are located on seismic zones, and the safety of building structures and transportation infrastructure under the influence of strong destructive earthquakes and their secondary disasters cannot be ignored. The primary requirement for reinforced concrete structures is structural safety, and the safety of structures under seismic loads is a key focus for scholars and engineers both domestically and internationally.

[0003] Compared to traditional rectangular columns, L-shaped reinforced concrete columns offer significant improvements in strength and stiffness, greatly mitigating the impact of protruding columns on building functionality. They also better accommodate irregular structures, increase usable floor space, and allow for more flexible layouts. L-shaped reinforced concrete columns utilize intersecting reinforcement bars at intersections to strengthen structural constraints, protecting internal corners and enhancing the column's vertical bearing capacity, ductility, and energy dissipation. However, L-shaped reinforced concrete columns are primarily used at building corners, where the stress conditions are complex and the loads are substantial. Under seismic loads, these columns are prone to shear failure, losing their compressive strength and potentially leading to structural collapse. Furthermore, traditional seismic-resistant columns are connected to the foundation only by a few reinforcing bars, resulting in low bond strength and susceptibility to separation from the foundation during vibrations, leading to column collapse. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a reinforced concrete L-shaped cross-section seismic isolation column, which can effectively absorb the vibration energy of buildings and has strong seismic resistance, thereby reducing the possibility of damage to reinforced concrete columns and concrete foundations after vibration.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A reinforced concrete L-shaped section seismic isolation column includes a reinforced concrete foundation, seismic isolation bearings, and a reinforced concrete column.

[0007] The reinforced concrete foundation is constructed by pouring concrete, and one side of the reinforced concrete foundation is fixedly connected to the seismic isolation bearing.

[0008] The side of the seismic isolation bearing away from the reinforced concrete foundation is connected to the seismic isolation bearing;

[0009] The reinforced concrete column has an L-shaped cross-section. Several steel bars are arranged along the length of the column, and the steel bars are evenly arranged around the perimeter of the column. A connecting steel plate is provided on the bottom surface of the column. One side of the connecting steel plate is welded to the steel bars, and the other side is connected to the seismic isolation support.

[0010] Furthermore, the seismic isolation bearing includes a lower connecting plate, an upper connecting plate, and a seismic isolation layer, with both sides of the seismic isolation layer being fixedly connected to the lower connecting plate and the upper connecting plate, respectively.

[0011] The reinforced concrete foundation has a first sleeve embedded in it, and the lower connecting plate is provided with a first high-strength bolt. The first high-strength bolt passes through the lower connecting plate and is then threaded into the first sleeve.

[0012] The reinforced concrete column is pre-embedded with a second sleeve, and the upper connecting plate is provided with a second high-strength bolt. The second high-strength bolt is sequentially passed through the lower connecting plate and the connecting steel plate and then threaded into the second sleeve.

[0013] Furthermore, the vibration isolation layer includes a lead core, a lower sealing plate, an upper sealing plate, and a protective outer layer.

[0014] The lead cores are fitted with vibration isolation pads, each vibration isolation pad comprising an inner steel plate and an inner rubber, with the inner steel plate and the inner rubber being stacked alternately. The two ends of the lead cores are respectively fixedly connected to the lower sealing plate and the upper sealing plate. The lower sealing plate is fixedly connected to the lower connecting plate, and the upper sealing plate is fixedly connected to the upper connecting plate. The protective outer layer covers the vibration isolation pads and is fixedly connected to the outer walls of the inner steel plate and the inner rubber of the lower sealing plate and the upper sealing plate, respectively.

[0015] Furthermore, both sides of the vibration isolation pad are made of inner rubber, and both the lower connecting plate and the upper connecting plate are provided with connecting bolts. The connecting bolts of the lower connecting plate pass through the lower connecting plate and the lower sealing plate in sequence and are then threaded into the inner rubber. The connecting bolts of the upper connecting plate pass through the upper connecting plate and the upper sealing plate in sequence and are then threaded into the inner rubber.

[0016] Furthermore, a first anchoring bar is fixedly provided at the end of the first sleeve away from the first high-strength bolt, and a second anchoring bar is fixedly provided at the end of the second sleeve away from the second high-strength bolt, and both the first anchoring bar and the second anchoring bar are L-shaped structures.

[0017] Furthermore, a steel reinforcement cage is provided inside the reinforced concrete column, and the steel reinforcement cage is fitted over the steel bars.

[0018] The beneficial effects of this utility model are:

[0019] 1. By installing connecting steel plates at the bottom of reinforced concrete columns, with one side of the connecting steel plates welded to pre-embedded steel bars in the reinforced concrete columns, the bonding strength between the reinforced concrete columns and seismic isolation bearings is increased, preventing the reinforced concrete columns from separating from the seismic isolation bearings during vibrations and thus avoiding the collapse of the reinforced concrete columns. By installing seismic isolation bearings in the building structure, the flexible deformation of the seismic isolation bearings is used to extend the natural vibration period of the structure and to dissipate seismic energy through damping, thereby significantly reducing the seismic response of the superstructure and improving structural safety. Simultaneously, it effectively reduces the transmission of seismic energy and lowers the building's vibration response, thus solving the problem of the insignificant seismic isolation effect of traditional seismic columns. This utility model can effectively absorb the vibration energy of buildings, has strong seismic resistance, and reduces the possibility of damage to reinforced concrete columns and concrete foundations after vibrations. It also reduces the acceleration of the structural response, thereby reducing damage to the superstructure, maintaining the building's usability after an earthquake, protecting internal equipment, and reducing earthquake disaster losses.

[0020] 2. By pre-embedding the first sleeve in the reinforced concrete foundation and the second sleeve in the reinforced concrete column, and connecting them with high-strength bolts, the connection strength between the seismic isolation bearing and the reinforced concrete foundation and column is increased, effectively preventing separation of the reinforced concrete foundation and column during vibration. Pre-embedding anchor bars in the first and second sleeves further increases the connection strength between the seismic isolation bearing and the reinforced concrete foundation and column, and enhances seismic resistance. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a reinforced concrete L-shaped cross-section seismic isolation column according to a preferred embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the reinforced concrete foundation structure of a reinforced concrete L-shaped cross-section seismic isolation column according to a preferred embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of a reinforced concrete column structure of a reinforced concrete L-shaped cross-section seismic isolation column according to a preferred embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the seismic isolation support structure of a reinforced concrete L-shaped section seismic isolation column according to a preferred embodiment of the present invention.

[0025] In the diagram, 1-reinforced concrete foundation, 101-first sleeve, 2-seismic isolation bearing, 21-lower connecting plate, 22-upper connecting plate, 23-seismic isolation layer, 231-lead core, 232-lower sealing plate, 233-upper sealing plate, 234-protective outer layer, 235-inner steel plate, 236-inner rubber, 3-reinforced concrete column, 301-second sleeve, 31-steel bar, 4-connecting steel plate, 51-first high-strength bolt, 52-second high-strength bolt, 61-first anchor bar, 62-second anchor bar, 7-reinforcement cage. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please also see Figures 1 to 4 A preferred embodiment of the present invention is a reinforced concrete L-shaped section seismic isolation column, comprising a reinforced concrete foundation 1, a seismic isolation support 2, and a reinforced concrete column 3.

[0030] The reinforced concrete foundation 1 is constructed by pouring concrete, and one side of the reinforced concrete foundation 1 is fixedly connected to the seismic isolation bearing 2.

[0031] The side of the seismic isolation bearing 2 away from the reinforced concrete foundation 1 is connected to the seismic isolation bearing 2.

[0032] The reinforced concrete column 3 has an L-shaped cross-section. Several steel bars 31 are arranged along the length of the reinforced concrete column 3, and the steel bars 31 are evenly arranged around the perimeter of the reinforced concrete column 3. A connecting steel plate 4 is provided on the bottom surface of the reinforced concrete column 3. One side of the connecting steel plate 4 is welded to the steel bars 31, and the other side is connected to the seismic isolation bearing 2.

[0033] like Figure 1 As shown, in this embodiment, a steel reinforcement cage 7 is provided inside the reinforced concrete column 3, and the steel reinforcement cage 7 is fitted over the steel bars 31. Under the action of the steel reinforcement cage 7, the structural strength and stiffness of the reinforced concrete column 3 are increased.

[0034] The reinforced concrete column 3 in this embodiment can be prefabricated and manufactured in a factory, which can achieve high construction precision, improve construction efficiency, and enhance the safety of the building structure.

[0035] In this embodiment, the addition of seismic isolation bearings 2 ensures a flexible connection between the superstructure and the reinforced concrete foundation 1, giving it the dual functions of load-bearing and seismic isolation. Simultaneously, the L-shaped cross-section of the reinforced concrete column 3 provides it with sufficient strength and stiffness to resist seismic forces; the addition of seismic isolation bearings 2 further enhances the seismic performance of the connection point.

[0036] In this embodiment, by setting a connecting steel plate 4 at the bottom of the reinforced concrete column 3, and welding one side of the connecting steel plate 4 to the steel strip 31 pre-embedded in the reinforced concrete column 3, the bonding strength between the reinforced concrete column 3 and the seismic isolation bearing 2 is increased, preventing the reinforced concrete column 3 from separating from the seismic isolation bearing 2 when subjected to vibration, thus avoiding the collapse of the reinforced concrete column 3. By setting the seismic isolation bearing 2 in the building structure, the flexible deformation of the seismic isolation bearing 2 is used to extend the natural vibration period of the structure, and the seismic energy is consumed through damping, thereby significantly reducing the seismic response of the superstructure, improving the safety of the structure, and effectively reducing the transmission of seismic energy and reducing the vibration response of the building, thus solving the problem of the insignificant seismic isolation effect of traditional seismic columns. This utility model can effectively absorb the vibration energy of the building, has strong seismic resistance, and reduces the possibility of damage to the reinforced concrete column and concrete foundation after vibration. At the same time, it reduces the acceleration of the structural response, thereby reducing the damage to the superstructure, maintaining the building's usability after an earthquake, protecting internal equipment, and reducing earthquake disaster losses.

[0037] like Figure 2 and Figure 4 As shown, the seismic isolation bearing 2 includes a lower connecting plate 21, an upper connecting plate 22 and a seismic isolation layer 23, with the two sides of the seismic isolation layer 23 being fixedly connected to the lower connecting plate 21 and the upper connecting plate 22 respectively.

[0038] The reinforced concrete foundation 1 is pre-embedded with a first sleeve 101, and the lower connecting plate 21 is provided with a first high-strength bolt 51. The first high-strength bolt 51 passes through the lower connecting plate 21 and is then threaded into the first sleeve 101.

[0039] The reinforced concrete column 3 is pre-embedded with a second sleeve 301, and the upper connecting plate 22 is provided with a second high-strength bolt 52. The second high-strength bolt 52 is sequentially passed through the lower connecting plate 21 and the connecting steel plate 4 and then threaded into the second sleeve 301.

[0040] By pre-embedding the first sleeve 101 in the reinforced concrete foundation 1 and the second sleeve 301 in the reinforced concrete column 3, the high-strength bolts are connected to the corresponding first sleeve 101 and second sleeve 301, which increases the connection strength between the seismic isolation bearing 2 and the reinforced concrete foundation 1 and the reinforced concrete column 3, and effectively avoids the situation where the reinforced concrete foundation 1 and the reinforced concrete column 3 are easily separated when subjected to vibration.

[0041] The first sleeve 101 is fixedly provided with a first anchoring bar 61 at the end away from the first high-strength bolt 51, and the second sleeve 301 is fixedly provided with a second anchoring bar 62 at the end away from the second high-strength bolt 52. Both the first anchoring bar 61 and the second anchoring bar 62 are L-shaped structures.

[0042] The pre-embedded anchor bars in the first sleeve 101 and the second sleeve 301 can further increase the connection strength between the seismic isolation bearing 2 and the reinforced concrete foundation 1 and the reinforced concrete column 3 and increase the seismic resistance.

[0043] like Figure 2 and Figure 3 As shown, the vibration isolation layer 23 includes a lead core 231, a lower sealing plate 232, an upper sealing plate 233, and a protective outer layer 234.

[0044] The lead core 231 is fitted with vibration isolation pads in alternating layers. The vibration isolation pads include an inner steel plate 235 and an inner rubber 236, and the inner steel plate 235 and the inner rubber 236 are stacked alternately. The two ends of the lead core 231 are fixedly connected to the lower sealing plate 232 and the upper sealing plate 233, respectively. The lower sealing plate 232 is fixedly connected to the lower connecting plate 21, and the upper sealing plate 233 is fixedly connected to the upper connecting plate 22. The protective outer layer 234 covers the vibration isolation pads, and the protective outer layer 234 is fixedly connected to the outer side walls of the inner steel plate 235 and the inner rubber 236 of the lower sealing plate 232 and the upper sealing plate 233, respectively.

[0045] Both sides of the vibration isolation pad are internal rubber 236. Both the lower connecting plate 21 and the upper connecting plate 22 are provided with connecting bolts 267. The connecting bolts 267 of the lower connecting plate 21 pass through the lower connecting plate 21 and the lower sealing plate 232 in sequence and are then threaded into the internal rubber 236. The connecting bolts 267 of the upper connecting plate 22 pass through the upper connecting plate 22 and the upper sealing plate 233 in sequence and are then threaded into the internal rubber 236.

[0046] The seismic isolation pad consists of multiple layers of alternating internal steel plates 235 and internal rubber 236. The internal steel plates 235 serve as reinforcing materials for the internal rubber 236, changing the characteristic of low vertical stiffness of the rubber body, enabling it to reduce horizontal seismic forces while also bearing large vertical loads.

[0047] The fabrication process of the reinforced concrete L-shaped section seismic isolation column in this embodiment is as follows:

[0048] S1. Weld steel bar 31 onto connecting steel plate 4, and sleeve steel reinforcement cage 7 onto steel bar 31 and weld it to steel bar 31. Weld one end of second sleeve 301 to connecting steel plate 4, and the connecting steel plate 4 has a reserved installation hole communicating with second sleeve 301. Weld the other end of second sleeve 301 to second anchor bar 62. Set connecting steel plate 4 at the bottom of mold, and precast reinforced concrete column 3 by casting the mold.

[0049] S2. A first sleeve 101 and a first anchor bar 61 are pre-embedded in the reinforced concrete foundation 1, and the lower concrete foundation 1 is poured.

[0050] S3. After the first high-strength bolt 51 is inserted through the lower connecting plate 21, it is threaded into the first sleeve 101 to fix the seismic isolation support 2 on the reinforced concrete foundation 1.

[0051] S4. The second high-strength bolt 52 is sequentially inserted through the upper connecting plate 22 and the connecting steel plate 4 and then threaded into the second sleeve 301 to fix the connecting steel plate 4 on the seismic isolation support 2.

Claims

1. A reinforced concrete L-shaped section seismic isolation column, characterized in that, Includes reinforced concrete foundation (1), seismic isolation bearings (2), and reinforced concrete columns (3). The reinforced concrete foundation (1) is constructed by pouring concrete, and one side of the reinforced concrete foundation (1) is fixedly connected to the seismic isolation bearing (2); The side of the seismic isolation bearing (2) away from the reinforced concrete foundation (1) is connected to the seismic isolation bearing (2); The reinforced concrete column (3) has an L-shaped cross-section. Several steel bars (31) are arranged along the length of the reinforced concrete column (3), and the steel bars (31) are evenly arranged around the inside of the reinforced concrete column (3). A connecting steel plate (4) is provided on the bottom surface of the reinforced concrete column (3). One side of the connecting steel plate (4) is welded to the steel bars (31), and the other side is connected to the seismic isolation support (2).

2. A reinforced concrete L-shaped section seismic isolation column according to claim 1, characterized in that: The seismic isolation bearing (2) includes a lower connecting plate (21), an upper connecting plate (22), and a seismic isolation layer (23). The two sides of the seismic isolation layer (23) are fixedly connected to the lower connecting plate (21) and the upper connecting plate (22), respectively. The reinforced concrete foundation (1) is pre-embedded with a first sleeve (101), and the lower connecting plate (21) is provided with a first high-strength bolt (51). The first high-strength bolt (51) passes through the lower connecting plate (21) and is then threaded into the first sleeve (101). The reinforced concrete column (3) is pre-embedded with a second sleeve (301), and the upper connecting plate (22) is provided with a second high-strength bolt (52). The second high-strength bolt (52) is sequentially inserted through the lower connecting plate (21) and the connecting steel plate (4) and then threaded into the second sleeve (301).

3. A reinforced concrete L-shaped section seismic isolation column according to claim 2, characterized in that: The vibration isolation layer (23) includes a lead core (231), a lower sealing plate (232), an upper sealing plate (233), and a protective outer layer (234). The lead core (231) is fitted with vibration isolation pads in alternating layers. Each vibration isolation pad includes an inner steel plate (235) and an inner rubber (236), with the inner steel plate (235) and the inner rubber (236) stacked alternately. Both ends of the lead core (231) are fixedly connected to the lower sealing plate (232) and the upper sealing plate (233), respectively. The lower sealing plate (232) is fixedly connected to the lower connecting plate (21), and the upper sealing plate (233) is fixedly connected to the upper connecting plate (22). The protective outer layer (234) covers the vibration isolation pads and is fixedly connected to the outer walls of the lower sealing plate (232), the upper sealing plate (233), the inner steel plate (235), and the inner rubber (236), respectively.

4. A reinforced concrete L-shaped section seismic isolation column according to claim 3, characterized in that: Both sides of the vibration isolation pad are made of internal rubber (236). The lower connecting plate (21) and the upper connecting plate (22) are both provided with connecting bolts (267). The connecting bolts (267) of the lower connecting plate (21) pass through the lower connecting plate (21) and the lower sealing plate (232) in sequence and are then threaded into the internal rubber (236). The connecting bolts (267) of the upper connecting plate (22) pass through the upper connecting plate (22) and the upper sealing plate (233) in sequence and are then threaded into the internal rubber (236).

5. A reinforced concrete L-shaped section seismic isolation column according to claim 2, characterized in that: The first sleeve (101) is fixedly provided with a first anchor bar (61) at the end away from the first high-strength bolt (51), and the second sleeve (301) is fixedly provided with a second anchor bar (62) at the end away from the second high-strength bolt (52), and both the first anchor bar (61) and the second anchor bar (62) are L-shaped structures.

6. A reinforced concrete L-shaped section seismic isolation column according to claim 1, characterized in that: The reinforced concrete column (3) is provided with a steel reinforcement cage (7), which is fitted over the steel bar (31).

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