CN110593409A - Full-life-cycle detachable and replaceable frame structure system and installation and replacement method - Google Patents
Full-life-cycle detachable and replaceable frame structure system and installation and replacement method Download PDFInfo
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- CN110593409A CN110593409A CN201910950421.3A CN201910950421A CN110593409A CN 110593409 A CN110593409 A CN 110593409A CN 201910950421 A CN201910950421 A CN 201910950421A CN 110593409 A CN110593409 A CN 110593409A
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- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 28
- 239000002356 single layer Substances 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims description 27
- 238000010276 construction Methods 0.000 claims description 13
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims 1
- 238000009432 framing Methods 0.000 claims 1
- -1 friction damper Inorganic materials 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 6
- 230000007123 defense Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008439 repair process Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different 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
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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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
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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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- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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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
- E04H9/025—Structures with concrete columns
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a full life cycle detachable and replaceable frame structure system and an installation and replacement method, wherein the system comprises a single-layer single-frame structure unit which is formed by a detachable reinforced concrete column, a detachable steel beam, a node area and a detachable floor slab; the upper part and the lower part of the detachable reinforced concrete columns of the single-layer single-truss structural unit are respectively connected with a detachable steel beam through a node area, the detachable floor slab is connected on the detachable steel beam, and a replacing device is arranged on the node area between the detachable steel beams; the upper and lower layers of the detachable reinforced concrete columns are connected through node areas, and the bottom layer columns of the single-layer single-truss structural units are connected with the foundation through column feet; and (3) repeatedly constructing the single-layer single-frame structural unit to form a multi-layer or high-rise framework structural system with a detachable and replaceable whole life cycle. The structural body can be disassembled into single components after the normal use state or the service period expires, the recycling of the components is realized, and after an earthquake, the structural body can be repaired after the earthquake by disassembling and replacing the damaged components.
Description
Technical Field
The invention relates to the field of structural engineering and earthquake prevention and disaster reduction, in particular to a full-life-cycle detachable and replaceable frame structure system and an installation and replacement method.
Background
Detachability and replaceability, two new concepts of structure design are accepted by scholars at home and abroad. The detachable structure can realize the prefabrication of all structural members, has the detachability of the whole life cycle, has high construction speed and low cost, does not generate or only generates a small amount of building rubbish when being detached, and can recycle the structural members. However, the limitation of "detachable" is mainly embodied in two aspects: firstly, the whole structure can be sequentially dismantled from top to bottom only after the service period expires, and the structural member cannot be locally dismantled or replaced during the service period; secondly, the problem of rapid recovery of the structure after the earthquake damage is not solved.
The recoverable functional structure, namely the structure that can recover the use function without repairing or slightly repairing after earthquake, mainly comprises: self-resetting structures, swinging wall structures and structures with replaceable components. The structure with the replaceable component dissipates earthquake energy mainly through elastic-plastic deformation of the replaceable component under the action of an earthquake, protects the main body structure from being damaged or only slightly damaged, and the structural function can be recovered by replacing the energy-consuming component after the earthquake action.
Disclosure of Invention
In order to overcome the problems of the prior art, the invention aims to provide a full-life-cycle detachable and replaceable frame structure system and an installation and replacement method, which are a structure system simultaneously having full-life-cycle detachability and replaceability of damaged components after earthquake; the structure system is not only beneficial to solving the environmental problems of building rubbish, atmospheric pollution and the like, but also can quickly recover the use function of the building after earthquake disasters, and has remarkable economic and social benefits.
In order to achieve the purpose, the invention adopts the technical scheme that:
a full life cycle detachable and replaceable frame structure system comprises a single-layer single-truss structure unit formed by a detachable reinforced concrete column, a detachable and replaceable steel beam, a node area and a detachable and replaceable floor slab; the upper part and the lower part of the detachable reinforced concrete columns of the single-layer single-truss structural unit are respectively connected with a detachable steel beam through a node area, the detachable floor slab is connected on the detachable steel beam, and a replacing device is arranged on the node area between the detachable steel beams; the upper and lower layers of the detachable reinforced concrete columns are connected through node areas, and the bottom layer columns of the single-layer single-truss structural units are connected with the foundation through column feet; and the single-layer single-frame structure unit is repeatedly constructed to form a multi-layer or high-rise framework structure system with a detachable and replaceable whole life cycle.
The present invention also has a further preferable embodiment with respect to the above-described technical solution.
Preferably, the removable reinforced concrete column is connected with the node area through a flange plate and a high-strength bolt; the detachable steel beam is connected with the node area through a high-strength bolt; the removable floor slab is connected with the removable steel beam through the shear-resistant studs.
Preferably, a plurality of energy dissipation devices are arranged between the node domain and the replaceable section steel beam, and the energy dissipation devices are arranged at positions, close to the node domain, of the replaceable section steel beam.
Preferably, the node domain comprises a node core region enclosure frame and flanges at the upper end and the lower end of the node core region enclosure frame, and cantilever beam sections extending outwards are connected along the periphery of the node core region enclosure frame; the four cantilever beam sections penetrate through webs of the node core area enclosure frame to be continuously connected to form a cross structure, the upper flange and the lower flange of the I-steel of the cantilever beam sections in the node core area enclosure frame are cut off, and the cutting angles from two sides of the flange of the steel beam to the center are 30-60 degrees.
Preferably, the removable reinforced concrete column comprises a concrete column body and concrete column flanges connected to the peripheries of upper and lower end columns of the concrete column body, the concrete column body is internally provided with in-column longitudinal ribs and stirrups, and the in-column longitudinal ribs are welded with the flanges; the concrete column flange is connected with the flange in the node area through high-strength bolts in a dry connection mode.
Preferably, the energy dissipation device is energy dissipation angle steel, a friction damper, a soft steel damper or a lead extrusion damper.
Preferably, the replacement device is a hydraulic jack.
Preferably, the bottom layer column base embedded rectangular steel plate and the foundation top surface embedded rectangular steel plate are connected through embedded high-strength bolts in a dry connection mode.
Preferably, the junction of removable reinforced concrete post and node area, the junction of bottom layer post and basis are provided with the stiffening rib.
Preferably, the removable reinforced concrete column can be replaced by a steel reinforced concrete column or a steel pipe concrete column.
The invention correspondingly provides a method for installing and replacing a full-life-cycle detachable and replaceable frame structure system, which comprises the following steps:
A. structural system installation
1) Standing the bottom layer column on a foundation; the foundation embedded high-strength bolt penetrates through the flange plate bolt hole embedded in the bottom layer column, and the bolt is aligned and screwed;
2) connecting the node area with a reinforced concrete column through a concrete column flange plate; further connecting the detachable steel beam with the node area through a high-strength bolt; further penetrating shear-resistant studs pre-embedded in the detachable floor slab through the reserved bolt holes of the section steel beams to form a single-layer structure unit;
3) the single-layer structure unit is repeatedly constructed to form a multi-layer or high-rise structure system;
B. structural system replacement
Supporting a hydraulic jack of the replacing device at the outward extending position of a flange plate of a node area, transferring axial force by the hydraulic jack, taking out the damaged reinforced concrete column, and further installing a new reinforced concrete column;
the ring flange hides in floor surface layer and ceiling in the construction, when changing removable reinforced concrete post, chisels open floor surface layer, can expose the ring flange, accomplishes whole change process.
Compared with the prior art, the invention has the beneficial effects that:
(1) all components can be prefabricated in factories and constructed in an on-site assembly mode, wet operation is not needed, construction efficiency is improved, and construction dust and construction waste can be reduced.
(2) The detachable full-life cycle structure has the characteristic of detachable full-life cycle, and the whole structure can be detached into a single component during or after the service period is expired, so that the recycling is convenient, and the economic and social benefits are remarkable.
(3) The anti-seismic defense line is provided with a plurality of anti-seismic defense lines; the beam section energy consumption device is used as a first anti-seismic defense line, has good ductility and can dissipate most energy; the detachable and replaceable section steel beam serves as a second anti-seismic defense line, so that energy can be further dissipated, and a node area is protected from being damaged; removable interchangeable reinforced concrete post is as third antidetonation defence line, and the bearing capacity is high, can prevent that the structure from collapsing under the big effect of shaking.
(4) The single damaged component is replaceable, and the repairability of the whole structure can be realized by replacing the damaged component after the earthquake.
On the basis of the basic full-life-cycle detachable and replaceable frame structure system, the detachable and replaceable reinforced concrete columns can be replaced by profile steel concrete columns, steel pipe concrete columns and the like, and a full-life-cycle detachable and replaceable mixed frame and combined frame system is further formed. The connection form of the central column and the node area is consistent with that of the reinforced concrete column, namely, the central column and the node area are connected through a flange plate and a high-strength bolt which are welded at the column end.
Overall, the removable interchangeable frame construction system of full life cycle compares with traditional frame construction, and the prefabricated assembly rate is high, and construction speed is fast, can satisfy full life cycle's dismantlement and shake the damaged component after removable simultaneously, accords with green building's theory, and has realized the target of multichannel antidetonation fortification. Therefore, the full-life-cycle detachable and replaceable frame structure system has great engineering practical significance in deep research and popularization and application.
Drawings
FIG. 1 is an elevation view of a full lifecycle removable and replaceable framework architecture;
FIG. 2 is an elevational view of a single level single frame structural unit of FIG. 1;
FIG. 3 is a plan view of the single-level single-frame structural unit of FIG. 2;
FIG. 4 is a schematic view of installation and post-earthquake repair of a single-layer single-frame structural unit in FIG. 1;
FIG. 5 is a detailed view of a node domain;
FIG. 6 is a schematic view of a removable and replaceable steel concrete column (steel concrete column );
FIG. 7 is a schematic view of a basic installation;
fig. 8 is a schematic view of a composite beam.
In the figure: 1. a reinforced concrete column; 1-1, concrete column body; 1-9, a concrete column flange plate; 1', a bottom layer column; 2. a removable section steel beam; 3. a node domain; 3-1, a node core area; 3-2, a cantilever beam section; 3-9, a node domain flange plate; 4. the floor can be disassembled and replaced; 5. replacing the device; 6. an energy consuming device; 7. shear resistant studs; 8. a high-strength bolt; 9. a flange plate; 10. a foundation; 10-8, embedding high-strength bolts; 10-9 of rectangular steel plates; 11. a single-layer single-frame structural unit.
Detailed Description
The following describes the construction method of the present invention in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the full life cycle detachable and replaceable frame structure system of the present invention is a vertical view of an actual project, and includes a detachable reinforced concrete column 1, a detachable steel beam 2, a detachable floor slab 4 and a foundation 10. The structural unit of a single-layer single frame will be described in detail below.
As shown in fig. 2 and fig. 3, the vertical and the plan views are respectively a single-layer single-truss structural unit, and include a removable reinforced concrete column 1, a removable steel beam 2, a node area 3, a removable floor slab 4, a replacing device 5, an energy consumption device 6, a shear stud 7, a high-strength bolt 8 and a flange 9.
The detachable reinforced concrete columns 1 are respectively connected with detachable section steel beams 2 up and down through node areas 3, detachable floor slabs 4 in each layer are connected with the detachable section steel beams 2, the replacing device 5 is arranged in a plurality of the detachable reinforced concrete columns 1 by adopting a hydraulic jack, the detachable reinforced concrete columns 1 between the upper layer and the lower layer are connected through the node areas 3, and bottom layer columns 1' of single-layer single-truss structural units 11 are connected with a foundation 10 through column feet; the detachable reinforced concrete column 1 is connected with the node area 3 through a flange plate 9 and a high-strength bolt 8; the removable section steel beam 2 is connected with the node area 3 through high-strength bolts 8. Be equipped with a plurality of power consumption device 6 between node territory 3 and the removable shaped steel roof beam 2, power consumption device 6 arranges in the position that removable shaped steel roof beam 2 is close to node territory 3. The detachable and replaceable reinforced concrete column 1, the detachable and replaceable steel beam 2, the node area 3 and the detachable and replaceable floor slab 4 form a single-layer and single-pin structural unit 11; the single-layer single-frame structure unit 11 is repeatedly constructed to form a multi-layer or high-rise frame structure system with a detachable and replaceable whole life cycle.
Fig. 4 is a schematic view of installation and post-earthquake repair of a single-layer single-frame structural unit.
FIG. 5 is a detailed view of a node domain, wherein the node domain 3 includes a node core region 3-1 enclosing frame and flanges 3-9 at upper and lower ends thereof, and cantilever beam sections 3-2 extending outward are connected along the periphery of the node core region 3-1 enclosing frame; the four cantilever beam sections 3-2 penetrate through webs of the node core area 3-1 enclosure frame to be continuously connected to form a cross structure, the cantilever beam sections 3-2 are cut off from flanges of upper and lower parts of I-steel in the node core area 3-1 enclosure frame, and the cutting-off angle is 30-60 degrees from two sides of the flange of the steel beam to the center.
As shown in fig. 6, which is a detailed view of a reinforced concrete column, a removable reinforced concrete column 1 comprises a concrete column body 1-1 and concrete column flanges 1-9 connected to the peripheries of upper and lower end columns of the concrete column body 1-1, a column inner longitudinal rib and a stirrup are arranged in the concrete column body 1-1, and the column inner longitudinal rib is welded with the flanges 1-9; the flanges 1-9 of the concrete column are connected with the flanges 3-9 of the node area through high-strength bolts 8 in a dry connection mode.
Fig. 7 is a schematic view of the basic installation. The bottom layer column 1' column base embedded rectangular steel plate, the foundation 10 top surface embedded rectangular steel plate 10-9, the two through embedded high strength bolt 10-8 connection, the connection mode is dry connection.
Fig. 8 is a schematic view of a composite beam. The removable floor slab 4 is connected to the removable section beam 2 by shear studs 7.
The energy dissipation device 6 of the structure can be energy dissipation angle steel, a friction damper, a soft steel damper or a lead extrusion damper. The plurality of energy dissipation devices are arranged at positions, close to the node areas, of the removable and replaceable section steel beams, and the node areas are protected from being damaged under the action of earthquakes.
Considering the influence of the floor slab, the bending-resistant bearing force ratio of the removable and replaceable reinforced concrete column and the removable and replaceable section steel beam is recommended to be 1.6-1.8, so that a yield mechanism of 'beam hinge damage' can be basically realized, and the seismic design concept of 'strong column and weak beam' is met.
Furthermore, bending moment and shearing force are jointly borne by the high-strength bolts and the flange plate at the joint of the reinforced concrete column and the node area and the joint of the bottom layer column and the foundation, and the thickness of the flange plate and the number and the specification of the high-strength bolts are determined according to the bearing capacity requirement; and if necessary, a stiffening rib is arranged to improve the rigidity of the joint.
After the normal use state or the service period expires, the high-strength bolt at the joint can be disassembled, and the structure is disassembled into single components from top to bottom, so that the recycling is convenient, and the disassembly of the structure is realized.
And in the structure, the detachable reinforced concrete column 1 can be replaced by a section steel concrete column 1aOr steel pipe concrete column 1b。
When in construction, the bottom layer column is firstly erected on a foundation; the embedded studs of the foundation penetrate through the embedded flange plate bolt holes of the bottom layer column, and the bolts are screwed after the embedded studs are aligned; further connecting the node area part with the reinforced concrete column through a flange plate; further connecting the section steel beam with the node area through a high-strength bolt; further enabling the pre-embedded studs of the floor slab to penetrate through the reserved bolt holes of the section steel beams to form single-layer structural units; and (4) repeatedly constructing the single-layer structure unit to form a multi-layer or high-rise structure system.
The joint of the reinforced concrete column and the node area, the joint of the bottom column and the foundation, the bending moment and the shearing force are jointly borne by the high-strength bolts and the flange plate, and the thickness of the flange plate and the number and the specification of the high-strength bolts are determined according to the bearing capacity requirement; if the rigidity of the joint does not meet the condition, stiffening ribs can be arranged, the size and the number of the stiffening ribs are obtained through calculation, and the rigidity of the joint is improved.
The removable and replaceable reinforced concrete column, the removable and replaceable section steel beam, the removable and replaceable floor slab and the energy consumption device can be replaced after being damaged by an earthquake, and the removable and replaceable section steel beam can be replaced by detaching the high-strength bolt connected with the node area if being locally damaged under the action of the earthquake; if the detachable and replaceable reinforced concrete column is locally damaged, the shaft force can be transmitted by supporting the flange plates in the upper node area and the lower node area through the replacing device, the high-strength bolt connected to the flange plates is disassembled, the damaged reinforced concrete column is taken down, a new reinforced concrete column is installed, and the single component can be replaced after the earthquake.
The specific adjustment mode is as follows:
under the action of small shock, the structural system is in an elastic state; under the action of a medium earthquake, by a design method of a strong column and a weak beam, namely, controlling the bearing capacity ratio of the column and the beam, realizing that the energy consumption device and the section steel beam are used as a first anti-earthquake defense line and a second anti-earthquake defense line to consume energy and yield successively, protecting a node area and a column from being damaged, and replacing the energy consumption device and the section steel beam by disassembling high-strength bolts connected with the node area and the section steel beam after the earthquake to repair the structure; under the effect of a large earthquake, plastic hinges are formed at the beam end and the column end, the section steel beam and the reinforced concrete column are replaced after the earthquake, the section steel beam is replaced in the above mode, when the reinforced concrete column is replaced, the hydraulic jack is supported at the outward extending position of the flange plate in the node area, the hydraulic jack transmits axial force, the damaged reinforced concrete column is taken out, a new reinforced concrete column is further installed, and the whole replacement process is completed.
Therefore, compared with the prior art, the full-life-cycle detachable and replaceable frame structure system formed by the invention realizes the detachable and replaceable structure in the full life cycle, is beneficial to installation and repair after earthquake, realizes the design concept of 'not bad due to small earthquake, repairable due to medium earthquake and repairable due to large earthquake', and has the advantages of high construction efficiency, low construction cost and small environmental pollution.
Claims (10)
1. A full life cycle detachable and replaceable frame structure system is characterized by comprising a single-layer single-frame structural unit (11) formed by a detachable reinforced concrete column (1), a detachable steel beam (2), a node area (3) and a detachable floor slab (4); the upper part and the lower part of a detachable reinforced concrete column (1) of a single-layer single-frame structural unit (11) are respectively connected with a detachable section steel beam (2) through a node area (3), a detachable floor slab (4) is connected on the detachable section steel beam (2), and a replacing device (5) is arranged on the node area (3) between the detachable section steel beams (2); the upper and lower removable reinforced concrete columns (1) are connected through a node area (3), and the bottom layer column (1') of the single-layer single-frame structural unit (11) is connected with a foundation (10) through a column base; the single-layer single-frame structure unit (11) is repeatedly constructed to form a multi-layer or high-layer framework structure system with a detachable and replaceable whole life cycle.
2. A full life cycle demountable and replaceable frame structure system according to claim 1, wherein said demountable column of reinforced concrete (1) is connected to said node area (3) by flanges (9) and high strength bolts (8); the detachable section steel beam (2) is connected with the node area (3) through a high-strength bolt (8); the detachable floor slab (4) is connected with the detachable section steel beam (2) through shear-resistant studs (7).
3. A full life cycle demountable and replaceable frame structure system according to claim 1, wherein a plurality of energy dissipation devices (6) are provided between the node areas (3) and the demountable steel beams (2), the energy dissipation devices (6) being arranged at positions of the demountable steel beams (2) near the node areas (3).
4. The full-life-cycle removable and replaceable frame structure system as claimed in claim 1, wherein said node domain (3) comprises a node core region (3-1) surrounding frame and flanges (3-9) at upper and lower ends thereof, and cantilever beam sections (3-2) extending outwards are connected along the periphery of the node core region (3-1) surrounding frame; the four cantilever beam sections (3-2) penetrate through webs of the enclosing frame of the node core area (3-1) to be continuously connected to form a cross structure, the cantilever beam sections (3-2) are cut off from flanges of upper and lower parts of I-shaped steel in the enclosing frame of the node core area (3-1), and the cutting-off angle from two sides of the flange of the steel beam to the center is 30-60 degrees.
5. The full-life-cycle detachable and replaceable frame structure system as claimed in claim 4, wherein the detachable and replaceable reinforced concrete column (1) comprises a concrete column body (1-1) and concrete column flanges (1-9) connected to the peripheries of upper and lower end columns of the concrete column body (1-1), longitudinal ribs and stirrups in the column are arranged in the concrete column body (1-1), and the longitudinal ribs in the column are welded with the flanges (1-9); the concrete column flange plates (1-9) are connected with the flange plates (3-9) in the node area through high-strength bolts (8) in a dry connection mode.
6. The full-life cycle dismountable and replaceable frame structure system according to claim 1, wherein said energy dissipation device (6) is energy dissipation angle steel, friction damper, mild steel damper or lead extrusion damper; the replacing device (5) is a hydraulic jack.
7. The full-life-cycle detachable and replaceable frame structure system as claimed in claim 1, wherein the base pillar (1') is embedded with rectangular steel plates, the top surface of the foundation (10) is embedded with rectangular steel plates (10-9), the two are connected through embedded high-strength bolts (10-8), and the connection mode is dry connection.
8. A full life cycle demountable and replaceable frame structure system according to claim 1, wherein said demountable reinforced concrete columns (1) are connected to said node area (3), and said bottom columns (1') are connected to said foundation (10) with stiffening ribs.
9. The full-life-cycle detachable and replaceable frame structure system as claimed in claim 1, wherein the detachable and replaceable reinforced concrete column (1) is replaceable by a steel reinforced concrete column (1)a) Or a steel pipe concrete column (1)b)。
10. A method of installing and replacing a full life cycle removable and replaceable framing structure according to any one of claims 1 to 9, comprising the steps of:
A. structural system installation
1) Standing the bottom layer column (1') on the foundation (10); high-strength bolts (10-8) embedded in the foundation (10) penetrate through flange plate bolt holes embedded in the bottom layer columns, and are aligned and screwed;
2) connecting the node area (3) with a reinforced concrete column (1) through a concrete column flange plate (1-9); further connecting the detachable section steel beam (6) with the node area (3) through a high-strength bolt (8); further penetrating shear-resistant studs (7) pre-embedded in the detachable floor slab (4) through the reserved bolt holes of the section steel beams to form a single-layer structure unit;
3) the single-layer structure unit is repeatedly constructed to form a multi-layer or high-rise structure system;
B. structural system replacement
Supporting a hydraulic jack of the replacing device (5) at the outward extending position of a flange plate (9) of the node area (3), transferring axial force by the hydraulic jack, taking out the damaged reinforced concrete column (1), and further installing a new reinforced concrete column;
during construction, the flange (9) is hidden in a floor surface layer and a ceiling, and when the detachable reinforced concrete column (1) is replaced, the floor surface layer is chiseled open, so that the flange (9) can be exposed, and the whole replacement process is completed.
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| CN115467414A (en) * | 2022-09-26 | 2022-12-13 | 中南大学 | Mechanism and method for determining energy consumption of penetrating combined joint of concrete filled steel tubular column |
| CN116290373A (en) * | 2022-12-06 | 2023-06-23 | 同圆设计集团股份有限公司 | Steel frame assembled house system of trapezoid concrete filled steel tubular column and construction method |
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