CN110593413A - Detachable and replaceable reinforced concrete column-column connection structure and method based on flange connection - Google Patents
Detachable and replaceable reinforced concrete column-column connection structure and method based on flange connection Download PDFInfo
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- CN110593413A CN110593413A CN201910951204.6A CN201910951204A CN110593413A CN 110593413 A CN110593413 A CN 110593413A CN 201910951204 A CN201910951204 A CN 201910951204A CN 110593413 A CN110593413 A CN 110593413A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 199
- 238000000034 method Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 239000004567 concrete Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34326—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by longitudinal elements
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- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a flange connection-based detachable and replaceable reinforced concrete column-column connection structure and a flange connection-based detachable and replaceable reinforced concrete column-column connection method, wherein the flange connection-based detachable and replaceable reinforced concrete column-column connection structure comprises an upper section of reinforced concrete column, a lower section of reinforced concrete column and a detachable and replaceable reinforced concrete column between the two sections of reinforced concrete columns, flanges are arranged at two ends of the detachable and replaceable reinforced concrete column, flanges with outward extending plates are arranged at two ends of the upper section of reinforced concrete column and the lower section of reinforced concrete column, shear connectors are pre-embedded in the upper section; the flange plates are connected between the upper section of reinforced concrete column and the lower section of reinforced concrete column through high-strength bolts, and the lifting jacks are used between the outer extending plates of the upper flange plate and the lower flange plate to detach and replace the reinforced concrete columns. The invention has simple structure and construction form, convenient processing and manufacturing and clear force transmission path, realizes the detachability and the replaceability of the reinforced concrete column in the whole life cycle and lays a foundation for the detachability and the replaceability of the structure system in the whole life cycle.
Description
Technical Field
The invention relates to the field of column-column connection in a full-life-cycle detachable and replaceable structure system, in particular to a flange connection-based detachable and replaceable reinforced concrete column-column connection structure and a flange connection-based detachable and replaceable reinforced concrete column-column connection method.
Background
The full-life-cycle detachable and replaceable structural system is a brand-new structural system concept and is in accordance with the aseismic design concept of green buildings and sustainable development. Namely, the structure can be disassembled into single components after the structure is in a normal use state or is out of service, so that the components are recycled or reused; the structure can be damaged according to an expected mode under the action of an earthquake, and a damaged detachable and replaceable component is detached and replaced, so that the quick recovery of the structural function after the earthquake is realized; when the service function of the original structure is changed, the detachable and replaceable component is detached and updated, so that the service function of the structure is rapidly updated.
At present, scholars at home and abroad research detachable structures mainly from the angle of prefabricated assembly of structural members and removal of the structural members after the service period expires, aim at generating no or only a small amount of construction waste after the structure is removed, and recycle the removed structural members. The limitations of the detachable structure are mainly reflected in two aspects: firstly, the whole structure can be dismantled from top to bottom only after the service period expires, but the structural member cannot be dismantled or replaced locally during the service period; and secondly, the problem of rapid recovery of the use function of the structure after the earthquake action is not solved.
The full-life-cycle detachable and replaceable structure system organically integrates two functions of 'detachable' and 'replaceable', so that the structure can be detached and replaced for original components which do not meet functional requirements due to the change of the use function during service, and the use function of the structure can be rapidly updated; the components can be disassembled, recycled and reused after the structure is in service; can also dismantle the change to the impaired removable interchangeable component of structure after the earthquake effect, realize the quick recovery of the structure service function after the shake.
The invention provides a flange connection-based detachable and replaceable reinforced concrete column-column connection structure, which is not well applicable to the proposed full-life cycle detachable and replaceable structure system. The invention is an important component of a full-life-cycle detachable and replaceable structural system, and is an important support for realizing the concept of the detachable and replaceable structural system. The invention is not only suitable for the detachable and replaceable structure system in the whole life cycle, but also well suitable for the existing assembly type structure system.
Disclosure of Invention
The invention provides a flange connection-based detachable and replaceable reinforced concrete column-column connection structure and a flange connection-based detachable and replaceable reinforced concrete column-column connection method, aiming at the problem that the existing reinforced concrete column-column connection structure cannot be well suitable for a full-life-cycle detachable and replaceable structure system. The invention has simple structure and construction form, convenient processing and manufacturing and clear force transmission path, develops a new idea of reinforced concrete column-column connection, realizes the detachability and replaceability of the reinforced concrete column in the whole life cycle and lays a foundation for the detachability and replaceability structure system in the whole life cycle.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a flange connection-based detachable and replaceable reinforced concrete column-column connection structure comprises an upper section of reinforced concrete column, a lower section of reinforced concrete column and a detachable and replaceable reinforced concrete column between the two sections of reinforced concrete columns, wherein the detachable and replaceable reinforced concrete column comprises the reinforced concrete column, flanges, shear connectors and high-strength bolts, the flanges are arranged at two ends of the reinforced concrete column, the shear connectors are pre-buried in the upper section of reinforced concrete column, the middle section of reinforced concrete column and the lower section of reinforced concrete column, the flange with an external extension plate is arranged at the upper end and the two ends of the lower section of reinforced concrete column, the flanges and the flange with the external extension plate are connected through the high-strength bolts, the detachable and replaceable reinforced concrete column is connected to the upper section of reinforced concrete column and the lower section of reinforced concrete column, and the disassembly and the replacement of.
The present invention also has a further preferable embodiment with respect to the above-described technical solution.
Preferably, the shear connector is welded with the flange plate, and the shear connector is a cross shear connector, a # -shaped shear connector, an inner rectangular shear connector or an outer rectangular shear connector.
Preferably, the reinforced concrete column is internally embedded with stirrups and longitudinal bars, the cross-shaped shear connector, the # -shaped shear connector or the inner rectangular shear connector is arranged in the stirrups and the longitudinal bars, and the longitudinal bars are welded with the flange plates.
Preferably, the outer rectangular shear connector is arranged outside the hoop reinforcement and the longitudinal reinforcement, and the outer rectangular shear connector and the longitudinal reinforcement are respectively connected with the flange plate in a welding manner.
Preferably, the hoop reinforcement, the longitudinal reinforcement and the shear connector are arranged in the upper section reinforced concrete column and the lower section reinforced concrete column, the flange plates with the external extension plates are arranged at two ends of the upper section reinforced concrete column and the lower section reinforced concrete column, the shear connector is pre-embedded in the upper section reinforced concrete column and the lower section reinforced concrete column, and the shear connector is in welded connection with the flange plates with the external extension plates.
Preferably, the steel rate of joining in marriage of removable interchangeable reinforced concrete column in upper segment reinforced concrete column, hypomere reinforced concrete column and middle section satisfies:
wherein L is0Is a structural layer height, L1For detachable and replaceable reinforced concrete column length, L2For pre-buried steel column length, A0Is the cross-sectional area of the upper and lower sections of the reinforced concrete column, AS0Is the cross-sectional area of the steel; a. the1For removable interchangeable reinforced concrete column cross-sectional area in the middle section, AS1Is the cross-sectional area of the steel material.
Preferably, the reinforced concrete column is made of C40 concrete; the longitudinal bars adopt HRB500 steel bars; the stirrups adopt HRB400 steel bars; the shear connector material adopts Q420 steel; the flange plate and the flange plate with the external extension plate are made of Q420 steel.
Preferably, the distance from the flange at the upper end of the reinforced concrete column to the beam bottom of the upper section of the reinforced concrete column is not more than 600mm, and the distance from the flange at the lower end to the floor of the lower section of the reinforced concrete column is not more than 600 mm.
The invention correspondingly provides a flange connection-based detachable and replaceable reinforced concrete column-column connection method, which comprises the following steps:
1) all components are processed in a factory, the shear connectors and the longitudinal ribs are welded on the flange plate in a butt welding mode, and the stirrups and the longitudinal ribs are distributed on the periphery or inside of the shear connectors; after the shear connectors, the longitudinal ribs, the stirrups and the flange plates are connected, C40 concrete is poured in a vertical mold to form a detachable and replaceable reinforced concrete column with the flange plates at two ends;
2) butt welding a shear connector and longitudinal ribs on a flange plate with an outward extending plate, wherein the hoop ribs and the longitudinal ribs are distributed around or inside the shear connector; after the shear connectors, the longitudinal ribs, the stirrups and the flange plates of the overhanging plates are connected, C40 concrete is poured in a vertical mold to form an upper section reinforced concrete column and a lower section reinforced concrete column which are provided with the flange plates with the overhanging plates;
3) connecting the flange plate with a flange plate with an external extension plate through a high-strength bolt, and connecting the detachable and replaceable reinforced concrete column between the upper section of reinforced concrete column and the lower section of reinforced concrete column;
4) when the reinforced concrete column needs to be disassembled and replaced, the jack is supported between the outward extending plates of the flange plates of the upper and lower outer extending plates, and the reinforced concrete column is disassembled and replaced through the jack.
Compared with the prior art, the invention has the following beneficial effects:
reinforced concrete column uses high-strength bolt to connect through the ring flange, uses jack to dismantle reinforced concrete column between the flange overhanging plate to install new reinforced concrete column, realize the removable interchangeable of reinforced concrete column through flange joint promptly.
The rigidity ratio of the upper, middle and lower reinforced concrete columns is controlled by the steel distribution ratio, the plastic hinge of the structure firstly appears at the middle position of the middle section reinforced concrete column body under the expected load action, and the flange plate joint does not deform or only slightly deforms. A jack is used between the upper flange plate and the lower flange plate to disassemble the damaged reinforced concrete column and install a new reinforced concrete column, so that the quick recovery of the structural function after the earthquake is realized; when original structure service function changes, use the jack to tear open the reinforced concrete column that does not satisfy new service function demand for the reinforced concrete column who satisfies the structural function demand, realize the quick renewal of structure service function.
The flange connection-based detachable and replaceable reinforced concrete column-column connection realizes the detachable and replaceable reinforced concrete column in the whole life cycle, has simple connection structure form and convenient processing and manufacturing, can quickly realize the industrialized manufacturing of structural components, and quickly improves the engineering construction efficiency. The invention is an important component of a full-life-cycle detachable and replaceable structural system, and is an important support for realizing the concept of the detachable and replaceable structural system. The invention is not only suitable for a full life cycle detachable and replaceable structure system, but also well suitable for the existing assembly type structure system, and has great engineering application range and application prospect.
Drawings
FIG. 1 is an overall schematic view of a detachable and replaceable reinforced concrete column-column connection structure based on flange connection;
FIG. 2 is a schematic view of the external appearance structure of the detachable and replaceable reinforced concrete column-column connection structure of the present invention;
FIG. 3 is a schematic view of a removable and replaceable reinforced concrete column member;
FIG. 4 is a schematic view of the internal structure of a removable and replaceable reinforced concrete column member;
FIG. 5 is a top view of a removable and replaceable reinforced concrete column-column connection;
FIG. 6 is a schematic view illustrating a connection structure of an I-shaped section steel column shear connector;
FIG. 7 is a schematic view illustrating a cross-shaped section steel column shear connector connection structure;
FIG. 8 is a schematic view illustrating a connection structure of a shearing connector for a section steel column shaped like a Chinese character jing;
FIG. 9 is a schematic view illustrating a connection structure of a shear connector for an inner rectangular steel column;
FIG. 10 is a schematic view illustrating a connection structure of a shear connector for an external rectangular steel column;
fig. 11 is a schematic view of a removable and replaceable reinforced concrete column being removed and replaced with the aid of a jack device.
Wherein, shown in the figure: the steel reinforced concrete column comprises an upper section steel reinforced concrete column 1, a flange plate 2 with an overhanging plate, a flange plate 3, a steel reinforced concrete column 4, a longitudinal rib 5, an I-shaped shear connector 6, a stirrup 7, a high-strength bolt 8, a lower section steel reinforced concrete column 9, a jack 10, a cross-shaped shear connector 11, a # -shaped shear connector 12, an inner rectangular shear connector 13 and an outer rectangular shear connector 14.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1-3, the flange-connection-based detachable and replaceable reinforced concrete column-column connection structure of the present embodiment includes an upper reinforced concrete column 1, a lower reinforced concrete column 9, and a detachable and replaceable reinforced concrete column between the two reinforced concrete columns, where the detachable and replaceable reinforced concrete column includes a reinforced concrete column 4, a flange 3, a flange 2 with an overhang plate, a shear connector, a jack 10, and a high-strength bolt 8. Shear connectors, stirrups 7 and longitudinal bars 5 are pre-buried in the reinforced concrete column 4, and the shear connectors and the longitudinal bars 5 in the reinforced concrete column 4 are welded with the flange plates 3. The joints of the upper flange and the lower flange of the reinforced concrete column 4 have the same structure, so that the reinforced concrete column with flanges at two ends is formed. Shear connectors, stirrups 7 and longitudinal bars 5 are embedded in the upper section of the reinforced concrete column 1, and the shear connectors and the longitudinal bars 5 in the upper section of the reinforced concrete column 1 are welded with the flange plate 2 with the external extension plate. The structure of the flange joint of the lower section reinforced concrete column 9 is the same as that of the upper section reinforced concrete column 1, so that the reinforced concrete column with the flange plate of the external extension plate is formed. The upper and lower sections of reinforced concrete columns 1 and 9 are connected with the flange 2 of the overhanging plate and the flange 3 at the upper and lower ends of the reinforced concrete column 4 through high-strength bolts, and the detachable and replaceable reinforced concrete column is connected between the upper and lower sections of reinforced concrete columns 1 and 9.
Use jack 10 to dismantle reinforced concrete column 4 between the ring flange 2 of upper and lower outband overhanging plate, and then install new reinforced concrete column, realize the removable interchangeable of reinforced concrete column through flange joint promptly. The damaged reinforced concrete column can be disassembled and replaced after the earthquake action, so that the quick recovery of the use function of the structure is realized; when original structure service function changes, tear open the reinforced concrete column that does not satisfy new functional requirement and trade for the reinforced concrete column that satisfies structural function demand, realize the quick renewal of structure service function.
Specifically, in one embodiment, the shear connectors embedded in the upper, middle and lower reinforced concrete columns are i-shaped shear connectors 6, as shown in fig. 4-6, and the i-shaped shear connectors 6 are disposed in the stirrups 7 and the longitudinal bars 5 and are welded to the flange 3.
In another embodiment, the shear connectors pre-embedded in the upper, middle and lower sections of the reinforced concrete column are cross-shaped shear connectors 11, as shown in fig. 7, the cross-shaped shear connectors 11 are arranged in the stirrups 7 and the longitudinal bars 5 and are welded with the flange 3.
In another embodiment, the shear connectors embedded in the upper, middle and lower reinforced concrete columns are groined shear connectors 12, as shown in fig. 8, the groined shear connectors 12 are arranged in the stirrups 7 and the longitudinal bars 5 and are welded with the flange 3.
In another embodiment, the shear connectors embedded in the upper, middle and lower reinforced concrete columns are inner rectangular shear connectors 13, as shown in fig. 9, the inner rectangular shear connectors 13 are disposed in the stirrups 7 and the longitudinal bars 5 and are welded to the flange 3.
In another embodiment, the shear connectors embedded in the upper, middle and lower reinforced concrete columns are outer rectangular shear connectors 14, as shown in fig. 10, the outer rectangular shear connectors 14 are arranged on the peripheries of the stirrups 7 and the longitudinal bars 5 and are welded with the flange 3.
Different shear connectors are pre-embedded in the reinforced concrete to form different I-shaped section steel columns, cross-shaped section steel columns, groined section steel columns, inner rectangular section steel columns or outer rectangular section steel columns, and the requirement of matching and connecting the frame columns in different structural forms can be met.
And, establish stirrup 7, indulge muscle 5 and shear connector in upper segment reinforced concrete column 1, hypomere reinforced concrete column 9, the steel rate relation of joining in marriage of upper segment reinforced concrete column 1, hypomere reinforced concrete column 9 and the removable interchangeable reinforced concrete column in middle section is:
wherein L is0Is a structural layer height, L1For detachable and replaceable reinforced concrete column length, L2For pre-buried steel column length, A0The section areas of the upper and lower sections of the reinforced concrete column 1 are steel section area AS0Is as follows; a. the1The section area of a replaceable reinforced concrete column 4 which is detachable at the middle section is AS1The cross-sectional area of the steel is as follows.
The rigidity ratio of the upper, middle and lower reinforced concrete columns is controlled by the steel distribution ratio, and the plastic hinge of the structure firstly appears at the middle position of the middle section reinforced concrete column body under the expected load action, so that the reinforced concrete column 4 is intensively damaged and consumes energy, and other parts of the structure are protected from being damaged. After the earthquake, the damaged reinforced concrete column 4 is replaced by a new reinforced concrete column, so that the structural function is quickly recovered.
Fig. 11 is a schematic diagram of detachable and replaceable reinforced concrete columns detached and replaced under the assistance of a jack device, and when the detachable and replaceable reinforced concrete columns need to be replaced, the jack 10 is placed between the flange plates 2 with the overhanging plates to support, and the reinforced concrete columns are detached and replaced.
The concrete examples of the removable and replaceable reinforced concrete column of the present invention are further described below.
In one embodiment, the reinforced concrete column 4 has a 400 × 400 cross-sectional size and a height of 2000mm, and is made of C40 concrete; the longitudinal bar 5 adopts HRB 500; the stirrup 7 adopts HRB 400; the cross section size of the shear connector for the I-shaped section steel column is HW200 multiplied by 15, the height is 600mm, and Q420 steel is adopted as the material; the flange 3 is provided with 12 bolt connecting holes, the section size is 600 multiplied by 600, the thickness is 20mm, and the material is Q420 steel; the section size of the flange plate 2 with the overhanging plate is 600 multiplied by 1000, the thickness is 20mm, the section size of the overhanging plate is 600 multiplied by 200, the thickness is 20mm, and the material is Q420 steel; the high-strength bolt is an M27 high-strength bolt. The distance from the position of the flange 3 at the upper end of the reinforced concrete column 4 to the bottom of the beam is 600mm, and the distance from the position of the flange at the lower end to the floor slab is 600 mm.
In the above example, all the components are processed in the factory, the flange 3 is a square steel plate with 12 bolt connection holes, and the flange 2 with the external extension plate is a rectangular steel plate, and is cut according to the whole size. The shear connector 6 and the longitudinal ribs 5 are butt welded on the flange plate 3, and the stirrups 7 and the longitudinal ribs 5 are distributed around the shear connector. And C40 concrete is poured in a vertical mold after the shear connector, the longitudinal ribs 5, the stirrups 7 and the flange plates 3 are connected, so that the detachable and replaceable reinforced concrete column with the flange plates at two ends is formed. The flange plates of the upper and lower sections of reinforced concrete columns connected with the detachable and replaceable reinforced concrete columns are provided with overhanging plates for later use of jacks to detach and replace reinforced concrete column components.
The detachable and replaceable reinforced concrete column 4 is connected with the upper section reinforced concrete column 1 and the lower section reinforced concrete column 9 through flanges respectively by high-strength bolts. When original structure service function changes, reinforced concrete column can not satisfy the new function demand of structure, can dismantle the reinforced concrete column and change for the reinforced concrete column that satisfies the structure function demand, realizes overall structure service function's quick renewal. Or after the earthquake, the flange joint of the reinforced concrete column does not deform or only slightly deforms under the expected load action. A jack is used between the upper flange plate and the lower flange plate, and damaged reinforced concrete column members are disassembled and replaced, so that the structural function is quickly recovered. When the original structure service function changes, the reinforced concrete column that does not satisfy the new functional requirement of structure is changed into the reinforced concrete column that satisfies the service function demand with the jack, realizes overall structure service function's quick renewal.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications within the technical scope of the present invention or according to the present invention, which are obvious to those skilled in the art, are encompassed by the present invention.
Claims (9)
1. A flange connection-based detachable and replaceable reinforced concrete column-column connection structure is characterized by comprising an upper reinforced concrete column (1), a lower reinforced concrete column (9) and a detachable and replaceable reinforced concrete column between the two reinforced concrete columns, wherein the detachable and replaceable reinforced concrete column comprises a reinforced concrete column (4), flanges (3), shear connectors and high-strength bolts (8), the flanges (3) are arranged at two ends of the reinforced concrete column (4), the shear connectors are pre-buried in the upper, middle and lower reinforced concrete columns, the flanges (2) with outward extending plates are arranged at two ends of the upper and lower reinforced concrete columns, the flanges (3) are connected with the flanges (2) with the outward extending plates through the high-strength bolts (8), the detachable and replaceable reinforced concrete column is connected between the upper and lower reinforced concrete columns (1 and 9), the reinforced concrete column is disassembled and replaced by supporting the jack (10) between the flange plates (2) with the upper and lower extension plates.
2. A flange-based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 1, wherein the shear connectors are welded to the flange plate (3), and the shear connectors are cross-shaped shear connectors (11), groined-shaped shear connectors (12), inner rectangular shear connectors (13) or outer rectangular shear connectors (14).
3. The flange connection-based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 2, wherein the stirrups (7) and the longitudinal ribs (5) are embedded in the reinforced concrete column (4), the cross-shaped shear connectors (11), the # -shaped shear connectors (12) or the internal rectangular shear connectors (13) are arranged in the stirrups (7) and the longitudinal ribs (5), and the longitudinal ribs (5) are welded to the flange plate (3).
4. A flange connection based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 3, wherein the outer rectangular shear connectors (14) are arranged outside the stirrups (7) and the longitudinal ribs (5), and the outer rectangular shear connectors (14) and the longitudinal ribs (5) are respectively welded with the flange plate (3).
5. The flange-connection-based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 3 or 4, wherein the hoop reinforcement (7), the longitudinal reinforcement (5) and the shear connector are arranged in the upper reinforced concrete column (1) and the lower reinforced concrete column (9), the flange plates (2) with the extension plates are arranged at two ends of the upper reinforced concrete column and the lower reinforced concrete column, the shear connector is embedded in the upper reinforced concrete column and the lower reinforced concrete column, and the shear connector is welded with the flange plates (2) with the extension plates.
6. The flange-connection-based detachable and replaceable reinforced concrete column-column connection structure of claim 1, wherein the steel distribution rate of the upper reinforced concrete column (1), the lower reinforced concrete column (9) and the middle detachable and replaceable reinforced concrete column is satisfied:
wherein L is0Is a structural layer height, L1For detachable and replaceable reinforced concrete column length, L2For pre-buried steel column length, A0Is the cross-sectional area of the upper and lower sections of the reinforced concrete column, AS0Is the cross-sectional area of the steel; a. the1For removable interchangeable reinforced concrete column cross-sectional area in the middle section, AS1Is the cross-sectional area of the steel material.
7. A flange-connection-based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 3, wherein the reinforced concrete column (4) is made of C40 concrete; the longitudinal bars (5) adopt HRB500 steel bars; the stirrups (7) adopt HRB400 steel bars; the shear connector material adopts Q420 steel; the flange plate (3) and the flange plate (2) with the overhanging plate are made of Q420 steel.
8. A flange-connection-based detachable and replaceable reinforced concrete column-column connection structure as claimed in claim 1, wherein the distance from the flange (3) at the upper end of the reinforced concrete column (4) to the bottom of the upper section reinforced concrete column (1) is not more than 600mm, and the distance from the flange at the lower end of the reinforced concrete column (9) to the floor of the lower section reinforced concrete column is not more than 600 mm.
9. A flange-based detachable and replaceable reinforced concrete column-column connection method of a structure according to any one of claims 1 to 8, characterized by comprising the following steps:
1) all components are processed in a factory, the shear connectors (6) and the longitudinal ribs (5) are butt-welded on the flange plate (3), and the stirrups (7) and the longitudinal ribs (5) are distributed around or inside the shear connectors; c40 concrete is poured in a vertical mold after the shear connectors, the longitudinal ribs (5), the stirrups (7) and the flange plates (3) are connected, and a detachable and replaceable reinforced concrete column (4) with flange plates at two ends is formed;
2) butt welding a shear connector (6) and longitudinal ribs (5) on a flange plate (2) with an outward extending plate, wherein the hoop ribs (7) and the longitudinal ribs (5) are distributed around or inside the shear connector; after the shear connectors, the longitudinal ribs (5), the stirrups (7) and the flange plates (2) of the overhanging plates are connected, C40 concrete is poured in a vertical mold to form an upper section reinforced concrete column (1) and a lower section reinforced concrete column (9) with the flange plates of the overhanging plates;
3) the flange (3) is connected with the flange (2) with the outward extending plate through a high-strength bolt, and the detachable and replaceable reinforced concrete column (4) is connected between the upper section of reinforced concrete column (1) and the lower section of reinforced concrete column (9);
4) when the reinforced concrete column (4) needs to be disassembled and replaced, the jack (10) is supported between the outward extending plates of the flange plates (2) with the outward extending plates at the upper part and the lower part, and the reinforced concrete column (4) is disassembled and replaced through the jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951204.6A CN110593413A (en) | 2019-10-08 | 2019-10-08 | Detachable and replaceable reinforced concrete column-column connection structure and method based on flange connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951204.6A CN110593413A (en) | 2019-10-08 | 2019-10-08 | Detachable and replaceable reinforced concrete column-column connection structure and method based on flange connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110593413A true CN110593413A (en) | 2019-12-20 |
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