CN114045983B - Split column assembly capable of quickly restoring function - Google Patents
Split column assembly capable of quickly restoring function Download PDFInfo
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- CN114045983B CN114045983B CN202111361123.4A CN202111361123A CN114045983B CN 114045983 B CN114045983 B CN 114045983B CN 202111361123 A CN202111361123 A CN 202111361123A CN 114045983 B CN114045983 B CN 114045983B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
Abstract
The application provides a split column assembly capable of quickly restoring functions. The split column assembly capable of rapidly recovering functions comprises a main column, a subsidiary column, a column head, a column base and a sleeve. The main column comprises a super-elastic shape memory alloy bar. The sub-column comprises sub-column reinforcing steel bars, the column cap comprises column cap reinforcing steel bars, and the column base comprises column base reinforcing steel bars. The sub-column reinforcement is connected to the column-head reinforcement and the column-foot reinforcement through the sleeve such that the sub-column is disposed between the column head and the column foot. The superelastic shape memory alloy rod is attached to the column head reinforcing steel and the column foot reinforcing steel at locations thereof such that the main column is disposed between the column head and the column foot. The main column and the sub-columns are arranged side by side.
Description
Technical Field
The application belongs to the technical field of building structure, especially relates to a components of a whole that can function recovery fast post subassembly.
Background
The urbanization process is developed at a high speed, and the urban diseases such as land resource shortage, traffic jam, environmental deterioration and the like caused by the rapid expansion of super-large cities are very prominent. The development and utilization of urban underground space is an effective way for solving the urban development problem, is a necessary means for improving urban livability and improving the living standard of people, and the engineering construction gradually enters into deep underground space of 40-100 m along with the new pattern of large-scale, intensive, three-dimensional and deep-layer presented by underground engineering.
Deep geological environment is complex and changeable, and deep underground structure damage has large degree of correlation between geological environment and functional system, so that deep underground structure damage is difficult to recover and has huge influence.
The life line engineering which mainly maintains the urban survival function and has great influence on the national civilian life is also an important part for ensuring the safety of the whole structure and quickly recovering when the building structure is damaged so as to facilitate the normal recovery and use of the engineering.
Therefore, the research and development of a structural system and a structural member which can quickly recover functions and are suitable for deep geological environment and lifeline engineering, and a design and construction theory and a method which are suitable for the structural system and the structural member are necessary preconditions for developing and utilizing deep underground space, enhancing urban toughness and guaranteeing normal production and life of people, and are one of technical supports for sustainable development of super-large cities.
Disclosure of Invention
In order to solve the technical problem that building components are difficult to repair, the application provides a split column component capable of quickly restoring functions.
This but quick function recovery's components of a whole that can function independently post includes:
a main column comprising a superelastic shape memory alloy rod;
a sub-column comprising sub-column reinforcing steel;
a stud including stud reinforcement;
a column shoe comprising a column shoe rebar; and
a sleeve, the sub-column reinforcement being connected to the column-head reinforcement and the column-foot reinforcement by the sleeve at a position thereof such that the sub-column is disposed between the column head and the column foot,
the superelastic shape memory alloy rod is attached to the column head reinforcing steel and the column foot reinforcing steel at locations thereof such that the main column is disposed between the column head and the column foot, the main column and the sub-column being disposed side by side.
In at least one embodiment, the main column and the sub-column have a gap therebetween, the gap having a spacer layer disposed therein, the spacer layer comprising at least one of bamboo plywood, asphalt, rubber, or other energy dissipating material.
In at least one embodiment, the cross section of the main column is rectangular, and the side-by-side arrangement of the main column and the sub-column is embodied in that two sub-columns are arranged on two sides of the main column; or
The cross section of the main column is circular, and the main column and the sub-columns are arranged side by side and are characterized in that two or more sub-columns are spliced into a cylindrical shape and surround the radial outer side of the main column.
In at least one embodiment, the main column includes a central zone of rebar disposed in a central region of the main column and a superelastic shape memory alloy rod disposed in an end region of the main column.
In at least one embodiment, the center region reinforcement bar is configured to be coupled to the superelastic shape memory alloy bar by the sleeve.
In at least one embodiment, the sub-column reinforcement extends in a longitudinal direction,
the column cap reinforcing steel bar comprises a transverse column cap reinforcing steel bar which is embedded into the column cap along the transverse direction and a longitudinal column cap reinforcing steel bar which extends along the longitudinal direction, the transverse column cap reinforcing steel bar and the longitudinal column cap reinforcing steel bar are formed by bending the column cap reinforcing steel bar,
the column base reinforcing steel bars comprise transverse column base reinforcing steel bars embedded into the column base along the transverse direction and longitudinal column base reinforcing steel bars extending along the longitudinal direction, the transverse column base reinforcing steel bars and the longitudinal column base reinforcing steel bars are formed by bending the column base reinforcing steel bars,
the column cap with the perpendicular line direction of column foot is vertical, with vertical perpendicular direction is horizontal.
In at least one embodiment, the sub-column reinforcement is configured to be coupled to the longitudinal column head reinforcement and the longitudinal column foot reinforcement through the sleeve.
In at least one embodiment, the shear-to-span ratio of both the main column and the sub-column is greater than 2.
In at least one embodiment, the split column assembly capable of rapid functional recovery further comprises a spherical hinge ball provided at both ends of the sub-column in a state where the sub-column is fitted between the column head and the column foot.
In at least one embodiment, spherical grooves are provided in the stud, the stub and the sub-stud, against which the articulation ball abuts.
The split type shaft structure that main column and sub-column are constituteed can form multichannel antidetonation defence line, compares that monomer formula shaft structure among the prior art has better mechanical properties. The sub-column is connected with the column head and the column foot through the sleeve, so that the sub-column is easy to install and replace, and the function of the column assembly can be quickly recovered.
Drawings
Fig. 1 shows a schematic structural view of a split column assembly capable of rapid functional recovery according to an embodiment of the present application.
Fig. 2 shows a cross-sectional view of fig. 1.
Description of the reference numerals
1, a main column; 11 main column reinforcing material; 12 main column concrete; 111 center section rebar; 112 superelastic shape memory alloy rod material; 13 a central region; 14 end regions;
2, a subsidiary column; 21 sub-column steel bars; 22 sub-column concrete;
3, column cap; 31 column cap reinforcing steel bars; 311 transverse stud reinforcement; 312 longitudinal stud rebar;
4, column base; 41 column base steel bars; 411 transverse column base steel bars; 412 longitudinal stub steel;
5, a column body;
6 a separation layer;
7, a sleeve;
8, hinging the ball;
9 spherical grooves.
Detailed Description
Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the present application, and is not intended to be exhaustive or to limit the scope of the application.
As shown in fig. 1 and 2, the present application provides a split post assembly that can be quickly functionally restored. The split column assembly comprises a main column 1, a sub-column 2, a column head 3 and a column foot 4. The column body 5 formed by combining the main column 1 and the sub-column 2 can be arranged between the column head 3 and the column foot 4 to bear load. The stud 3 may be an upper floor, a structural beam or a separate connector (e.g. a cap) for connection with an upper floor, a structural beam, etc. The column foot 4 can be a lower floor, a bearing platform, a foundation and the like. In this application, the perpendicular direction of column cap 3 and column foot 4 is vertical. The direction perpendicular to the longitudinal direction is the transverse direction.
The main column 1 comprises a main column reinforcement material 11 extending in the longitudinal direction and main column concrete 12. The cross-section of the main column 1 may be circular or rectangular.
The main column reinforcement material 11 may extend in the longitudinal direction. The main column reinforcement material 11 includes a central region reinforcement 111 located at the central region 13 of the main column 1 and a superelastic shape memory alloy bar 112 located at the end regions 14 of the main column 1. The center section bars 111 may be conventional hot rolled bars or cold drawn bars. The superelastic shape memory alloy rod 112 includes a superelastic Shape Memory Alloy (SMA) material, such as nitinol. The center section bar 111 and the superelastic shape memory alloy rod 112 may be connected by a sleeve 7 (described later) having an internal thread. After a strong shock occurs, the end region 14 of the main column 1 can form a plastic hinge, the shape memory alloy can exert the self-resetting characteristic, and the quick functional recovery of the main column 1 can be realized only by repairing the concrete in the plastic hinge region (the end region 14). The material class of the shape memory alloy is not limited in this application.
The main column concrete 12 is preferably Ultra High Performance Concrete (UHPC), which can greatly improve the strength of the concrete, has a greater vertical bearing capacity, and reduces the axial compression ratio. Of course, the main column concrete 12 may also be normal strength concrete, and the specific category of the main column concrete 12 is not limited in this application.
The sub-column 2 may be arranged side by side with the main column 1. In one embodiment of the present application, as shown in fig. 1, a main column 1 has a rectangular cross section, and two sub-columns 2 having the same rectangular cross section are disposed side by side on both sides of the main column 1. Preferably, the ratio of the thicknesses of the main pillar 1 and the sub-pillar 2 may be the sub-pillar: main column: sub-column =1:2:1 or 1:3:1. the thickness direction is shown in fig. 1 and 2. In another embodiment of the present application (not shown in the figures), the main column 1 has a circular cross section, and two or more sub-columns 2 are arranged side by side in the form of a plurality of sub-columns 2 spliced into a cylindrical structure, which surrounds the main column 1 radially outside. It is to be understood that the cross-sectional shape of the main column 1 is not limited in this application.
Can have certain clearance between main post 1 and the sub-post 2, can set up separate layer 6 in this clearance, separate layer 6 can be for bamboo splint, perhaps energy consumption materials such as pitch, rubber avoid main post 1 and the direct laminating of sub-post 2, reduce the vibration. The thickness of the spacer layer may be less than 20 mm. Through the separation effect of the separation layer 6, the main column 1 and the sub-column 2 not only enable the column body 5 to have different mechanical properties, but also can form a whole, and the excellent mechanical property of the split column assembly is achieved.
This application has set single cylinder structure to main column 1 among the prior art and has had gapped split type shaft 5 with that sub-post 2 constitutes, and when shaft 5 received load, mechanics calculation model had become long post from short column, destroyed the form and has changed the bending type from shearing type into, and ductility has obtained the reinforcing. The split design forms a plurality of anti-seismic defense lines, and the anti-seismic robustness is improved. In a preferred embodiment, the shear-span ratio of both the main column 1 and the sub-column 2 may be greater than 2.
The sub-column 2 includes a sub-column reinforcing bar 21 and a sub-column concrete 22 extending in the longitudinal direction. The sub-column reinforcing bars 21 may be ordinary hot rolled reinforcing bars or cold drawn reinforcing bars. The sub-column concrete 22 may be ultra-high performance concrete, silicate concrete, or the like.
The stud 3 may comprise a body material (e.g. concrete) and stud reinforcement 31 embedded inside the body material (fixedly attached inside the stud 3) and extending towards the shaft 5. The column head reinforcing steel bars 31 can be distributed at a plurality of positions of the column head 3, and the positions of the column head reinforcing steel bars 31 correspond to the positions of the main column reinforcing steel bar materials 11 and the sub-column reinforcing steel bars 21. In one embodiment of the present application, the stud reinforcement 31 may include a transverse stud reinforcement 311 embedded in the stud 3 in a transverse direction and a longitudinal stud reinforcement 312 extending in a longitudinal direction, and the longitudinal stud reinforcement 312 may protrude from a face of the stud 3 facing the shaft 5. The transverse column head reinforcing steel bars 311 and the longitudinal column head reinforcing steel bars 312 can be formed by bending a single column head reinforcing steel bar 31, and the bending design can enable the column head reinforcing steel bars 31 to be more tightly connected with the column head 3.
The column shoe 4 may comprise a body material (e.g. concrete) and a column shoe reinforcement 41 embedded in the body material (fixedly connected to the interior of the column shoe 4) and extending towards the column shaft 5. The column base reinforcing bars 41 may be disposed to be distributed at a plurality of positions of the column base 4, and the positions of the column base reinforcing bars 41 correspond to the positions of the main column reinforcing material 11 and the sub-column reinforcing bars 21. In one embodiment of the present application, the column foot reinforcing bars 41 may include transverse column foot reinforcing bars 411 embedded in the column foot 4 in the transverse direction and longitudinal column foot reinforcing bars 412 extending in the longitudinal direction, and the longitudinal column foot reinforcing bars 412 may protrude from the face of the column foot 4 facing the column shaft 5. The transverse column base reinforcing steel bar 411 and the longitudinal column base reinforcing steel bar 412 can be formed by bending a single column base reinforcing steel bar 41, and the bending design can enable the column base reinforcing steel bar 41 to be connected with the column base 4 more tightly.
As shown in fig. 2, the split column assembly proposed in the present application further comprises a sleeve 7, the sleeve 7 having an internal thread. In particular, the end portion (end extending toward the column shaft 5) of the longitudinal column head reinforcing bar 312, the end portions of the main column reinforcing bar 11, the end portions of the sub-column reinforcing bar 21, and the end portion (end extending toward the column shaft 5) of the longitudinal column base reinforcing bar 412 are externally threaded, and the main column reinforcing bar 11 and the sub-column reinforcing bar 21 can be connected to the column head reinforcing bar 31 and the column base reinforcing bar 41 through the sleeve 7, respectively, and the assembling and positioning are simple. The sleeve 7 may be a straight threaded sleeve or a split sleeve, the application not being limited to a specific type of sleeve.
The split column assembly provided by the application further comprises a hinge ball 8, the hinge ball 8 can be a solid ball or a hollow ball, and the hinge ball 8 can be made of steel or stainless steel. The column cap 3, the column foot 4 and the sub-column 2 are fixedly provided with spherical grooves 9, and the spherical grooves 9 can be formed by splicing two steel plates with hemispherical grooves. For example, hemispherical recesses are provided at both ends of the sub-column 2, respectively, and the column head 3, the column foot 4 face toward the sub-column 2. The hinge balls 8 are disposed in the spherical recesses 9 in an abutting relationship with the spherical recesses 9 so that the sub-column 2 has the hinge balls 8 at both ends thereof in a state in which the sub-column 2 is fitted between the column cap 3 and the column foot 4.
When the interlayer displacement caused by the earthquake action exceeds the designed interlayer displacement of the sub-column 2, the sub-column reinforcing steel bar 21 is pulled out from the sleeve 7. At the moment, the hinge ball 8 and the spherical groove 9 can enable the sub-column 2 and the column head 3 and the sub-column 2 and the column foot 4 to form a ball hinge structure, the ball hinge structure does not bear bending moment and shearing force, axial force support is continuously provided for a building, and vertical bearing capacity is maintained. Namely, the column end deformation of the sub-column 2 is controllable due to the structure of the sleeve 7 and the sub-column steel bar 21, and the sub-column 2 can continuously bear axial force due to the spherical hinge structure formed by the sub-column 2, the hinge ball 8 and the column head 3 and the spherical hinge structure formed by the sub-column 2, the hinge ball 8 and the column base 4, so that the mechanical property is better. Compared with a hemispherical hinged ball, the whole-ball hinged ball 5 provided by the application can form a hinged structure in all directions, and has better ductility.
The sub-column 2 can be poured into the module for assembly in advance, after disasters such as earthquake occur, damaged sub-column 2 can be replaced quickly, and the supporting and transferring functions of the split column assembly on the vertical and horizontal loads of the structure are restored.
The application provides a but split type post subassembly's of quick function recovery antidetonation performance and function recovery process can embody as, displacement surpasss the design interlaminar displacement back of sub-post 2 at the interlaminar displacement that earthquake action produced, sub-post 2 forms the ball hinge structure, though not undertake moment of flexure, shear force, but sub-post 2 can continue to undertake certain axial force, but the hyperelastic memory alloy rod in principal post 1 can automatic re-setting, sub-post 2 forms multichannel antidetonation defence line with principal post 1 jointly, realize the promotion of antidetonation robustness. After an earthquake, the sub-column 2 can be quickly detached from the split column assembly, concrete in the end area 14 is restored (supplemented), the pre-poured sub-column 2 is arranged between the column head 3 and the column foot 4 through the sleeve 7, and the hinge ball 8 is arranged in the spherical groove 9, so that the integral function recovery of the split column assembly is realized.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the application.
Claims (10)
1. A split column assembly that can be quickly functionally restored, comprising:
a main column (1), wherein the main column (1) comprises a super-elastic shape memory alloy bar (112);
a plurality of sub-columns (2), the sub-columns (2) comprising sub-column rebars (21);
a stud (3), the stud (3) comprising stud reinforcement (31);
a column shoe (4), the column shoe (4) comprising a column shoe reinforcement (41); and
a sleeve (7), the sub-column reinforcement (21) being connected to the column head reinforcement (31) and the column foot reinforcement (41) by the sleeve (7) at a position thereof such that the sub-columns (2) are disposed between the column head (3) and the column foot (4), the sub-columns (2) not being connected to each other,
the superelastic shape memory alloy bar (112) is connected to the column head reinforcing steel (31) and the column foot reinforcing steel (41) at its location such that the main column (1) is disposed between the column head (3) and the column foot (4),
the main column (1) and the sub-columns (2) are arranged side by side.
2. The split post assembly capable of rapid functional recovery of claim 1,
there is the clearance between main post (1) and sub-post (2), be provided with separate layer (6) in the clearance, separate layer (6) include at least one in bamboo splint, pitch, the rubber.
3. The split post assembly capable of rapid functional recovery of claim 1,
the cross section of the main column (1) is rectangular, and the main column (1) and the sub-columns (2) are arranged side by side, namely that the two sub-columns (2) are arranged on two sides of the main column (1); or
The cross section of the main column (1) is circular, and the main column (1) and the sub-columns (2) are arranged side by side to form a cylindrical shape formed by splicing two or more sub-columns (2) and surround the radial outer side of the main column (1).
4. The split post assembly capable of rapid functional recovery of claim 1,
the main column (1) comprises a central region steel bar (111) arranged in a central region (13) of the main column (1) and a superelastic shape memory alloy bar (112) arranged in an end region (14) of the main column (1).
5. The split post assembly capable of rapid functional recovery of claim 4,
the central region of reinforcement (111) is arranged to be connected to the superelastic shape memory alloy rod (112) by the sleeve (7).
6. The split post assembly capable of rapid functional recovery of claim 1,
the sub-column reinforcement (21) extends in the longitudinal direction,
the column cap reinforcing steel bars (31) comprise transverse column cap reinforcing steel bars (311) which are transversely embedded into the column cap (3) and longitudinal column cap reinforcing steel bars (312) which extend along the longitudinal direction, the transverse column cap reinforcing steel bars (311) and the longitudinal column cap reinforcing steel bars (312) are formed by bending the column cap reinforcing steel bars (31),
the column base reinforcing steel bars (41) comprise transverse column base reinforcing steel bars (411) embedded into the column base (4) along the transverse direction and longitudinal column base reinforcing steel bars (412) extending along the longitudinal direction, the transverse column base reinforcing steel bars (411) and the longitudinal column base reinforcing steel bars (412) are formed by bending the column base reinforcing steel bars (41),
column cap (3) with the perpendicular line direction of column foot (4) is vertical, with vertical perpendicular direction is horizontal.
7. The split post assembly capable of rapid functional recovery of claim 6,
the sub-column reinforcement (21) is arranged to be connected to the longitudinal column head reinforcement (312) and the longitudinal column foot reinforcement (412) by the sleeve (7).
8. The split post assembly capable of rapid functional recovery of claim 1,
the shear span ratio of the main column (1) and the sub-column (2) is larger than 2.
9. The split post assembly capable of rapid functional recovery according to claim 1,
the split column assembly capable of rapidly recovering functions further comprises spherical hinge balls (8), and the hinge balls (8) are arranged at two ends of the sub-column (2) in a state that the sub-column (2) is arranged between the column head (3) and the column base (4).
10. The split post assembly capable of rapid functional recovery of claim 9,
spherical grooves (9) are arranged in the column head (3), the column foot (4) and the sub-column (2), and the hinge ball (8) is abutted to the spherical grooves (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361123.4A CN114045983B (en) | 2021-11-17 | 2021-11-17 | Split column assembly capable of quickly restoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361123.4A CN114045983B (en) | 2021-11-17 | 2021-11-17 | Split column assembly capable of quickly restoring function |
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| CN114045983A CN114045983A (en) | 2022-02-15 |
| CN114045983B true CN114045983B (en) | 2022-11-25 |
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| CN202111361123.4A Active CN114045983B (en) | 2021-11-17 | 2021-11-17 | Split column assembly capable of quickly restoring function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115030306B (en) * | 2022-04-28 | 2023-06-20 | 湖南大学 | Column assembly with controllable column end deformation and easy column shaft replacement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679714A (en) * | 1992-09-02 | 1994-03-22 | Takenaka Komuten Co Ltd | Concrete-based material having high strength and high damping property |
| CN103882987A (en) * | 2014-04-09 | 2014-06-25 | 上海泛太建筑设计有限公司 | Variable hinged support capable of improving capacity for being adaptive to earth surface deformation of building |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN106499120A (en) * | 2016-10-14 | 2017-03-15 | 北京工业大学 | A kind of underground structure N-shaped that is used for connects Prefabricated spilt post |
| CN209924484U (en) * | 2018-11-09 | 2020-01-10 | 湖南大学 | Device with sleeve prefabricated part for reinforcing damaged reinforced concrete column |
-
2021
- 2021-11-17 CN CN202111361123.4A patent/CN114045983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0679714A (en) * | 1992-09-02 | 1994-03-22 | Takenaka Komuten Co Ltd | Concrete-based material having high strength and high damping property |
| CN103882987A (en) * | 2014-04-09 | 2014-06-25 | 上海泛太建筑设计有限公司 | Variable hinged support capable of improving capacity for being adaptive to earth surface deformation of building |
| CN205443914U (en) * | 2016-01-06 | 2016-08-10 | 上海应用技术学院 | Adopt shape memory alloy reinforcing bar to have prefabricated pin -connected panel pier of runback potential energy power |
| CN106499120A (en) * | 2016-10-14 | 2017-03-15 | 北京工业大学 | A kind of underground structure N-shaped that is used for connects Prefabricated spilt post |
| CN209924484U (en) * | 2018-11-09 | 2020-01-10 | 湖南大学 | Device with sleeve prefabricated part for reinforcing damaged reinforced concrete column |
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| CN114045983A (en) | 2022-02-15 |
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