Fabricated concrete-filled steel tube seismic isolation column with hollow interlayer
The modular design of prefabricated hollow steel tube concrete isolation columns solves the problems of insufficient energy dispersion, adaptability and durability of existing isolation columns, and achieves efficient seismic protection and economical construction.
Patent Information
- Application Number
- CN202520153404.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing seismic isolation columns are inadequate in terms of energy dispersion, adaptability, and durability, and are also costly.
The prefabricated hollow steel tube concrete structure includes a concrete base, rubber seismic isolation bearings, and hollow steel tube concrete columns, which are connected by bolts and pre-embedded anchor bars to form a modular design suitable for various environments and terrains.
It improves load-bearing capacity and seismic performance, reduces structural self-weight and construction costs, extends service life, is highly adaptable, has a fast construction speed, and is easy to maintain and repair.
Smart Images
Figure CN223867531U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seismic isolation column technology, and in particular to a prefabricated hollow sandwich steel tube concrete seismic isolation column. Background Technology
[0002] Seismic isolation columns are important components widely used in building engineering and other fields. They are mainly used to isolate or reduce the transmission of seismic energy to the upper structure by installing seismic isolation devices between the foundation and the superstructure. Common types of seismic isolation columns include rubber seismic isolation columns and sliding seismic isolation columns. Although these types of seismic isolation columns improve the seismic performance of building structures to a certain extent, they still have many shortcomings in terms of energy dispersion capacity, adaptability, economy, and durability.
[0003] Hollow-core steel-concrete composite columns are a novel building structure. Their outermost and innermost layers are steel tubes, with concrete filling the space between them. A hollow section is formed between the outer and inner steel tubes, into which concrete is poured, creating the hollow-core steel-concrete composite column. While ensuring sufficient load-bearing capacity, hollow-core steel-concrete composite columns reduce their weight. Compared to solid concrete columns, the hollow-core design can save materials and reduce costs, while also exhibiting better performance in energy dissipation, adaptability, and durability.
[0004] If hollow-core steel-concrete composite columns are combined with seismic isolation devices and designed to form seismic isolation columns, the problems of poor energy dispersion capacity, adaptability, economy, and durability of existing seismic isolation columns can be effectively solved. However, no relevant technology has been found in the prior art. Therefore, this application proposes a prefabricated hollow-core steel-concrete composite seismic isolation column. Utility Model Content
[0005] This invention proposes a prefabricated hollow-core steel-concrete composite seismic isolation column to solve the problems of poor energy dispersion capacity, adaptability, economy and durability of existing seismic isolation columns.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A prefabricated hollow-core steel-tube concrete seismic isolation column, comprising:
[0008] Concrete base, horizontally installed;
[0009] Rubber seismic isolation bearings are detachably installed on the top surface of the concrete base;
[0010] A hollow steel-tube concrete column, detachably installed on the top surface of the rubber seismic isolation bearing, includes a vertically arranged outer steel tube, an inner steel tube disposed inside the outer steel tube, and a concrete layer filled between the inner steel tube and the outer steel tube.
[0011] Furthermore, the rubber seismic isolation bearing is connected to the concrete base via a first connecting assembly, the first connecting assembly including a plurality of first bolts.
[0012] Furthermore, the first connecting assembly also includes a plurality of first pre-embedded anchor bars, a plurality of first straight threaded sleeves, and a first connecting plate; the plurality of first pre-embedded anchor bars are vertically arranged in the concrete base and connected to the first connecting plate through the plurality of first straight threaded sleeves; the first connecting plate is located on the top surface of the concrete base, the rubber seismic isolation bearing is placed on the top surface of the first connecting plate, and the plurality of first bolts are movably passed through the bottom of the rubber seismic isolation bearing and the first connecting plate, and are threadedly connected to the plurality of first straight threaded sleeves respectively.
[0013] Furthermore, several of the first bolts are arranged around the centerline of the rubber seismic isolation bearing.
[0014] Furthermore, the rubber seismic isolation bearing is connected to the hollow sandwich steel tube concrete column through a second connecting assembly, the second connecting assembly including a plurality of second bolts.
[0015] Furthermore, the second connecting assembly also includes a plurality of second pre-embedded anchor bars, a plurality of second straight threaded sleeves, and a second connecting plate; the plurality of second pre-embedded anchor bars are located in the concrete layer above the rubber seismic isolation bearing, and their bottoms are connected to the second connecting plate through a plurality of second straight threaded sleeves, the second connecting plate being placed on the top surface of the rubber seismic isolation bearing; a plurality of second bolts movably pass through the top of the rubber seismic isolation bearing and the second connecting plate, and are respectively threadedly connected to a plurality of second straight threaded sleeves; the bottoms of the outer steel pipe and the inner steel pipe are both welded to the second connecting plate, and the concrete layer fills the space formed by the outer steel pipe, the inner steel pipe, and the second connecting plate.
[0016] Furthermore, several second bolts are arranged around the centerline of the rubber seismic isolation bearing.
[0017] Furthermore, both the first bolt and the second bolt are high-strength bolts, and correspondingly, both the first straight-threaded sleeve and the second straight-threaded sleeve are high-strength straight-threaded sleeves.
[0018] Furthermore, both the first and second pre-embedded anchor bars are L-shaped.
[0019] Furthermore, both the inner and outer steel pipes are square pipes.
[0020] By adopting the above technical solution, this utility model has the following beneficial effects:
[0021] 1. The column of this utility model adopts a hollow sandwich design, which has a strong load-bearing capacity. The steel tube restrains the internal concrete, improving the compressive strength of the concrete. At the same time, the concrete prevents local buckling of the steel tube. The two work together to withstand large vertical and horizontal loads, improving the stiffness, ductility, and fire resistance of the column structure. Compared with existing solid seismic isolation columns, this utility model has better durability and a longer service life.
[0022] 2. The column of this utility model adopts a hollow sandwich design. The hollow part can absorb seismic energy, which has a good seismic resistance effect, reduces the vibration amplitude of the building, and thus effectively protects the safety of the building.
[0023] 3. The column of this utility model adopts a hollow sandwich design, which reduces the structural weight, facilitates transportation and hoisting, reduces foundation settlement, saves concrete usage, and reduces construction costs.
[0024] 4. This utility model adopts a prefabricated structure, which simplifies the construction process. It can adopt modular design, and the on-site construction speed is fast, which helps to shorten the overall construction cycle and reduce the overall construction cost.
[0025] 5. This utility model adopts a prefabricated structure, which is suitable for various environmental and terrain conditions and can be flexibly adjusted according to different design requirements, thus having strong adaptability.
[0026] 6. This utility model adopts a prefabricated structure, which can be repaired by quickly replacing the parts when the components are damaged, reducing maintenance costs and avoiding the waste of resources caused by demolition and reconstruction. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model;
[0028] Figure 2 This is a schematic diagram showing the arrangement of the first connecting component and the second connecting component of this utility model;
[0029] The components in the attached diagram are labeled as follows: 1-concrete base, 2-rubber vibration isolation bearing, 3-outer steel pipe, 4-inner steel pipe, 5-concrete layer, 6-first pre-embedded anchor bar, 7-first straight threaded sleeve, 8-first connecting plate, 9-first bolt, 10-second pre-embedded anchor bar, 11-second straight threaded sleeve, 12-second connecting plate, 13-second bolt. Detailed Implementation
[0030] 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.
[0031] Example 1
[0032] like Figure 1-2 As shown, a prefabricated hollow steel tube concrete isolation column includes a concrete base 1, a rubber isolation bearing 2, and a hollow steel tube concrete column.
[0033] A concrete base 1 is horizontally positioned. A rubber seismic isolation bearing 2 is detachably installed on the top surface of the concrete base 1. A hollow sandwich steel tube concrete column is detachably installed on the top surface of the rubber seismic isolation bearing 2. The column includes a vertically positioned outer steel tube 3, an inner steel tube 4 located inside the outer steel tube 3, and a concrete layer 5 filling the space between the inner steel tube 4 and the outer steel tube 3. In this embodiment, both the inner steel tube 4 and the outer steel tube 3 are square tubes.
[0034] The rubber seismic isolation bearing 2 is connected to the concrete base 1 via a first connecting assembly. This first connecting assembly includes several first bolts 9, several first embedded anchor bars 6, several first threaded sleeves 7, and a first connecting plate 8. The first embedded anchor bars 6 are vertically arranged within the concrete base 1 and connected to the first connecting plate 8 via the first threaded sleeves 7. Specifically, the first threaded sleeves 7 are welded to the first embedded anchor bars 6 and the first connecting plate 8. The first connecting plate 8 is located on the top surface of the concrete base 1, and the rubber seismic isolation bearing 2 is placed on top of the first connecting plate 8. The first bolts 9 movably pass through the bottom of the rubber seismic isolation bearing and the first connecting plate 8, and are threadedly connected to the first threaded sleeves 7 respectively. The first bolts 9 are arranged around the centerline of the rubber seismic isolation bearing 2.
[0035] The rubber seismic isolation bearing 2 is connected to the hollow steel-concrete composite column via a second connecting assembly. The second connecting assembly includes several second bolts 13, several second embedded anchor bars 10, several second threaded sleeves 11, and a second connecting plate 12. The second embedded anchor bars 10 are located within the concrete layer 5 above the rubber seismic isolation bearing 2, and their bottoms are connected to the second connecting plate 12 via several second threaded sleeves 11. Specifically, the second threaded sleeves 11 are welded to the second embedded anchor bars 10 and the second connecting plate 12. The second connecting plate 12 is placed on the top surface of the rubber seismic isolation bearing 2. Several second bolts 13 movably pass through the top of the rubber seismic isolation bearing and the second connecting plate 12, and are threadedly connected to several second threaded sleeves 11 respectively. The several second bolts 13 are arranged around the centerline of the rubber seismic isolation bearing 2. The bottoms of the outer steel pipe 3 and the inner steel pipe 4 are welded to the second connecting plate 12, and the concrete layer 5 fills the space formed by the outer steel pipe 3, the inner steel pipe 4, and the second connecting plate 12.
[0036] In this embodiment, both the first bolt 9 and the second bolt 13 are high-strength bolts, both the first straight-threaded sleeve 7 and the second straight-threaded sleeve 11 are high-strength straight-threaded sleeves, and both the first embedded anchor bar 6 and the second embedded anchor bar 10 are L-shaped. There are eight of each: the first bolt 9, the second bolt 13, the first straight-threaded sleeve 7, the second straight-threaded sleeve 11, the first embedded anchor bar 6, and the second embedded anchor bar 10. The bottom and top surfaces of the rubber vibration isolation bearing 2, the first connecting plate 8, and the second connecting plate 12 are all square, with two through holes for bolts to pass through at each corner of the square. Two first embedded anchor bars 6 located on the same side of the square are arranged opposite each other, and two second embedded anchor bars 10 located on the same side of the square are arranged opposite each other.
[0037] The rubber seismic isolation bearing 2 of this utility model is detachably connected to the concrete base 1 and the hollow sandwich steel pipe concrete column by bolts, which has the advantage of convenient assembly and disassembly. By setting pre-embedded anchor bars and straight threaded sleeves in the concrete, the stability of the connection can be effectively improved.
[0038] This utility model features a hollow-core column design, providing strong load-bearing capacity. The steel tubes restrain the internal concrete, increasing its compressive strength, while the concrete prevents local buckling of the steel tubes. Working together, these two components can withstand significant vertical and horizontal loads, improving the column structure's stiffness, ductility, and fire resistance. Compared to existing solid seismic isolation columns, this utility model offers superior durability and a longer service life. The hollow-core design absorbs seismic energy, providing excellent earthquake resistance and reducing building vibration amplitude, thus effectively protecting the building's safety. The hollow-core design also reduces the structure's self-weight, facilitating transportation and hoisting, minimizing foundation settlement, and saving on concrete usage, thereby lowering construction costs.
[0039] This utility model adopts a prefabricated structure, which simplifies the construction process. Modular design allows for rapid on-site construction, helping to shorten the overall construction cycle and reduce overall construction costs. The prefabricated structure is suitable for various environmental and terrain conditions, and can be flexibly adjusted according to different design requirements, exhibiting strong adaptability. Furthermore, the prefabricated structure allows for quick repair by replacing damaged components, reducing maintenance costs and avoiding the resource waste associated with demolition and reconstruction.
[0040] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.
Claims
1. A prefabricated hollow-core steel-tube concrete seismic isolation column, characterized in that, include: Concrete base, horizontally installed; Rubber seismic isolation bearings are detachably installed on the top surface of the concrete base; A hollow steel-tube concrete column, detachably installed on the top surface of the rubber seismic isolation bearing, includes a vertically arranged outer steel tube, an inner steel tube disposed inside the outer steel tube, and a concrete layer filled between the inner steel tube and the outer steel tube.
2. The prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 1, characterized in that: The rubber seismic isolation bearing is connected to the concrete base through a first connecting assembly, which includes a plurality of first bolts.
3. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 2, characterized in that: The first connecting assembly further includes a plurality of first pre-embedded anchor bars, a plurality of first straight threaded sleeves, and a first connecting plate; the plurality of first pre-embedded anchor bars are vertically arranged in the concrete base and connected to the first connecting plate through the plurality of first straight threaded sleeves; the first connecting plate is located on the top surface of the concrete base, the rubber seismic isolation bearing is placed on the top surface of the first connecting plate, and the plurality of first bolts are movably inserted through the bottom of the rubber seismic isolation bearing and the first connecting plate, and are threadedly connected to the plurality of first straight threaded sleeves respectively.
4. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 3, characterized in that: Several of the first bolts are arranged around the centerline of the rubber seismic isolation bearing.
5. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 4, characterized in that: The rubber seismic isolation bearing is connected to the hollow sandwich steel tube concrete column through a second connecting component, the second connecting component including a number of second bolts.
6. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 5, characterized in that: The second connecting assembly further includes a plurality of second pre-embedded anchor bars, a plurality of second straight threaded sleeves, and a second connecting plate; the plurality of second pre-embedded anchor bars are located in the concrete layer above the rubber seismic isolation bearing, and their bottoms are connected to the second connecting plate through a plurality of second straight threaded sleeves, the second connecting plate being placed on the top surface of the rubber seismic isolation bearing; a plurality of second bolts are movably inserted through the top of the rubber seismic isolation bearing and the second connecting plate, and are respectively threadedly connected to a plurality of second straight threaded sleeves; the bottoms of the outer steel pipe and the inner steel pipe are both welded to the second connecting plate, and the concrete layer fills the space formed by the outer steel pipe, the inner steel pipe, and the second connecting plate.
7. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 6, characterized in that: Several second bolts are arranged around the centerline of the rubber seismic isolation bearing.
8. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 7, characterized in that: Both the first bolt and the second bolt are high-strength bolts, and correspondingly, both the first straight-threaded sleeve and the second straight-threaded sleeve are high-strength straight-threaded sleeves.
9. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 8, characterized in that: Both the first and second pre-embedded anchor bars are L-shaped.
10. A prefabricated hollow-core steel-tube concrete seismic isolation column according to claim 9, characterized in that: Both the inner and outer steel pipes are square tubes.