CN108104263B - Novel assembled steel-recycled concrete mixed frame structure system - Google Patents
Novel assembled steel-recycled concrete mixed frame structure system Download PDFInfo
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- CN108104263B CN108104263B CN201711465078.0A CN201711465078A CN108104263B CN 108104263 B CN108104263 B CN 108104263B CN 201711465078 A CN201711465078 A CN 201711465078A CN 108104263 B CN108104263 B CN 108104263B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 239000002131 composite material Substances 0.000 claims abstract description 32
- 238000010276 construction Methods 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 11
- 238000011161 development Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- E04B1/19—Three-dimensional framework structures
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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
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
-
- 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
- E04B1/38—Connections for building structures in general
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
- E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a novel assembled steel-recycled concrete mixed frame structure system, which belongs to the field of structural engineering and is characterized in that a steel pipe recycled concrete column is adopted as a frame column of the mixed frame structure system, a profiled steel sheet-part recycled concrete composite floor slab is adopted as a floor slab, namely recycled concrete is adopted as a tensile area concrete, and single-side high-strength bolt end plates are adopted as beam column nodes to connect the nodes, so that the assembled and detachable structure is realized. The structure system has light dead weight, fully exerts the working characteristics of steel and recycled concrete, has simple node structure, high structural assembly rate and simple and convenient construction, and has good stress performance and economic benefit. Meanwhile, the recycled concrete is effectively applied to a building frame structure system with wide engineering application, so that the effective recycling of the building rubbish can be realized, and the development concept of sustainable civil engineering can be fully embodied. The invention is applied to structural forms such as frames, frame shear walls and the like, and is suitable for a main body structure system of a multilayer or high-rise structure.
Description
Technical Field
The invention relates to the technical field of civil engineering structures, in particular to a novel fabricated steel-recycled concrete mixed frame structure system.
Background
The frame structure has the advantages of light dead weight, flexible space division and the like, can be used as a main structure system of a multi-layer or high-layer structure, and is one of the most widely applied structural forms in building construction. Common framework systems are concrete framework systems, steel framework systems and steel-concrete hybrid framework systems. The concrete frame structure is a cast-in-place concrete frame, has strong integrity, low assembly rate, low construction speed and high energy consumption, and is not suitable for the guidance opinion of the national 'strongly developed assembly type building'; the steel frame structure system has high assembly rate and high construction speed, but has the defects of poor fire resistance and durability, high construction cost and high later maintenance cost; the steel-concrete mixed frame structure system is applied to steel-concrete composite members such as steel pipe concrete members and steel skeleton concrete members, the working characteristics of steel and concrete are fully exerted, the assembly rate is high, but the problems of complex node area structure, high construction difficulty and the like exist. Meanwhile, as the building market scale of China increases year by year, the yield of building rubbish is gradually increased, and how to effectively treat the building rubbish becomes a prominent problem of development of China. The birth and development of the recycled concrete technology provides an effective way for recycling the waste concrete, but the defects and defects of the recycled concrete performance limit the application of the recycled concrete in practical construction engineering.
Therefore, a novel structural system which has high assembly rate, simple construction, good stress performance and economic benefit and can effectively utilize recycled concrete is urgently needed, so that the requirements of sustainable development of construction waste recycling, construction assembly and industrialization are met.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the novel assembled steel-recycled concrete mixed frame structure system is high in assembly rate, simple and convenient to construct, and good in stress performance and economic benefit.
The embodiment of the invention relates to a novel fabricated steel-recycled concrete mixed frame structure system, which comprises frame columns, composite floor slabs and beam column nodes, wherein:
the frame column is a steel tube recycled concrete column and comprises a hollow steel tube and internally filled recycled concrete; each frame column extends along the vertical direction, and a plurality of frame columns are arranged in a plurality of rows in the transverse direction and a plurality of columns in the longitudinal direction;
the composite floor slab is a profiled steel sheet-part recycled concrete composite floor slab, is supported on the frame columns and comprises frame beams and a plate body, wherein the plate body comprises the profiled steel sheet, a recycled concrete layer, a common concrete layer, shear connectors and distribution steel bars; the frame beam is an I-shaped section steel beam and consists of an upper flange, a web plate and a lower flange; the frame beam is connected with the profiled steel sheet and the shear connector through welding; the profiled steel sheet is connected with the recycled concrete layer and the common concrete layer by adopting a shear connector; the concrete part of the combined floor slab, which is positioned below the shaft, adopts a regenerated concrete layer, and reinforcement is arranged according to the structure; the middle part and the upper part of the shaft of the composite floor slab adopt a common concrete layer and are provided with distributed steel bars;
the beam column joint is a unilateral high-strength bolt end plate connecting joint and comprises a frame column, a frame beam, an end plate and a unilateral high-strength bolt; the frame beam is welded with a triangle at the upper flange and the lower flange of the end part connected with the end plate; the frame beam and the end plate are welded by double-sided fillet weld; the hollow steel pipe of the frame column is penetrated up and down at the joint, bolt holes are correspondingly formed in the pipe wall of the hollow steel pipe and the end plate, single-side high-strength bolts penetrate through the reserved bolt holes in the end plate and the pipe wall of the hollow steel pipe from outside to inside, and single-side high-strength bolts are screwed from the outer side of the hollow steel pipe to connect the end plate and the frame column; and pouring recycled concrete into the hollow steel pipes of the frame columns after the frame beams are installed.
According to one embodiment of the invention, the cross section of the hollow steel tube in the frame column is circular, square or rectangular.
According to another embodiment of the invention, the cross-sectional form of the frame beam is a rolled or welded i-section; the frame beam end flange welding set square, the set square is along the width direction of top flange with the width direction of the upper end of end plate is unanimous, the set square is along the width direction of bottom flange with the width direction of the lower extreme of end plate is unanimous.
According to another embodiment of the invention, the end plates of the nodes are overhanging end plates, the cross section shapes of the end plates are circular arc-shaped and rectangular, and the cross section shapes of the end plates correspond to the round steel tube recycled concrete column and the square steel tube recycled concrete column respectively; the length of the end plate along the circumferential direction of the frame column is less than or equal to 1/4 of the outer circumference of the frame column.
According to a further example of the invention, the single-sided high strength bolt of the node is a special high strength bolt that can be tightened and secured on one side with a wrench or other installation tool.
According to still another embodiment of the present invention, the profiled steel sheet of the composite floor slab has a sectional form of an open type, a closed type or a reduced type; the shear connector of the composite floor slab is a stud; the concrete part of the composite floor slab is prefabricated or cast-in-situ in a factory, the neutralization shaft is determined according to calculation, when concrete is poured, a regenerated concrete layer is poured first, and when the regenerated concrete layer reaches a certain strength, a common concrete layer is poured.
In some embodiments, the recycled concrete used in the frame columns and the recycled concrete layer used in the composite floor slab have a recycled substitution rate of not more than 50%, and the strength grade is RC 30-RC 60.
In some embodiments, the steel materials used for the hollow steel pipes in the frame columns, the frame beams and the profiled steel sheets in the composite floor slab are Q235, Q345, Q420 or Q490.
The beneficial effects of the invention are as follows:
(1) Compared with the current common concrete frame structure, the method has the advantages of high assembly rate, high construction speed, low energy consumption and the like; compared with the current common steel frame structure, the steel frame structure has the advantages of high bearing capacity, strong fire resistance and durability, good economic benefit and the like; compared with the conventional steel-concrete mixed frame structure, the structure has the advantages of simple node structure, high construction speed, high resource utilization rate and the like.
(2) The frame adopts unilateral high strength bolt end plate connection node to realize the connection of steel tube recycled concrete column and girder steel, need not on-the-spot welding, realizes that can assemble, can dismantle, and node simple structure passes power definitely, the installation accuracy is high, makes the structure have higher assembly rate and efficiency of construction.
(3) In the profiled steel sheet-partially recycled concrete composite floor slab, the profiled steel sheet is used as a permanent formwork of concrete, so that the formwork supporting process in site construction is omitted, the construction speed is greatly improved, and the construction cost is reduced; meanwhile, the composite floor slab is convenient for laying pipelines, so that the structural system has good economical efficiency and applicability.
(4) The application of the recycled concrete in the frame column of the bearing member of the building structure effectively improves the comprehensive utilization rate of the recycled concrete, and belongs to high-level utilization; meanwhile, the application of the recycled concrete in the composite floor slab greatly saves the use of common concrete, reduces the construction cost, and ensures that the structure has higher utilization rate of construction waste resources and economic benefit. The method has the advantages that the recycled concrete is effectively applied to a building frame structure system with wide engineering application, the effective recycling of the building rubbish is realized, and the development concept of sustainable civil engineering is fully embodied.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic illustration of a novel fabricated steel-recycled concrete hybrid framework architecture in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of a connection node of a novel fabricated steel-recycled concrete hybrid frame structural system in accordance with an embodiment of the present invention;
FIG. 3 is a top view of a connection node of a novel fabricated steel-recycled concrete hybrid frame structural system in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a connection node of a new fabricated steel-recycled concrete hybrid frame structural system in accordance with another embodiment of the present invention;
FIG. 5 is a schematic illustration of a composite floor slab of a novel fabricated steel-recycled concrete hybrid framework architecture in accordance with another embodiment of the present invention;
fig. 6 is a cross-sectional view taken along line A-A of fig. 5.
Reference numerals:
100: a novel assembled steel-recycled concrete mixed frame structure system;
10: a frame column;
11: empty steel pipes; 12: recycled concrete;
20: combining floors;
21: a frame beam; 211: an upper flange; 212: a lower flange; 213: a web; 214: a triangle;
22: a plate body; 221: profiled steel sheet; 222: regenerating the concrete layer;
223: a common concrete layer; 224: a shear connector; 225: reinforcing steel bars;
30: beam column joints;
31: an end plate; 32: single-side high-strength bolts.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A novel fabricated steel-recycled concrete hybrid frame structure system 100 according to an embodiment of the present invention is described below with reference to fig. 1-6.
As shown in fig. 1-6, a novel fabricated steel-recycled concrete hybrid frame structure system 100 according to an embodiment of the present invention includes a plurality of frame columns 10, a plurality of composite floor slabs 20, and a plurality of beam-column nodes 30.
Specifically, each frame column 10 extends in the vertical direction, a plurality of frame columns 10 are arranged in a plurality of rows in the lateral direction, and are arranged in a plurality of columns in the longitudinal direction, and composite floor slabs 20 are supported on the frame columns 10.
Further, the composite floor slab 20 includes frame beams 21 and a plate body 22, the plurality of frame beams 21 are distributed in a plurality of different horizontal planes in the vertical direction, each of the plurality of frame beams 21 distributed in the same horizontal plane extends in the lateral direction or the longitudinal direction, and both ends of each frame beam 21 are respectively connected with two adjacent frame columns 10; the slab 22 includes profiled steel sheets 221, recycled concrete layer 222, normal concrete layer 223, shear connectors 224, and rebars 225.
The hollow steel pipe 11 of the frame column 10 is transported to a construction site for installation after the factory prefabrication processing is completed, bolt holes are formed in positions corresponding to the pipe wall of the steel pipe 11 according to a construction drawing, the frame beam 21 is transported to the construction site for installation after the factory prefabrication processing is completed, the cross section of the frame beam 21 can be processed in a rolling or welding mode, and a welding triangular plate 214 is added at the end of the connecting position of the frame beam 21 and the frame column 10 so as to reduce stress concentration, so that a plastic region is far away from a cylindrical surface.
The end of the frame beam 21 is welded with the end plate 31 through double-sided fillet welds, the end plate 31 is provided with bolt holes at corresponding positions according to a construction drawing, the column body 10 is connected with the frame beam 21 through single-sided high-strength bolts 32, the single-sided high-strength bolts 32 sequentially penetrate through the end plate 31 and the pipe wall of the hollow steel pipe 11 from outside to inside, the single-sided high-strength bolts 32 are screwed from the outer side of the steel pipe 11, and after the single-sided high-strength bolts 32 are installed, the regenerated concrete 12 is poured into the hollow steel pipe 11 of the frame column 10.
When the composite floor slab 20 is constructed in a cast-in-situ mode, after the hollow steel pipe and the frame beam 21 are installed, the profiled steel sheet 221 is installed, plug welding connection is adopted between the profiled steel sheet 221 and the frame beam 21, and whether the profiled steel sheet 221 needs to be added for temporary support is judged according to a calculation result. After the profiled steel sheet 221 is laid, the shear connectors 224 are positioned on the frame beams 21 according to the construction drawing, the shear connectors 224 can be studs, the shear connectors 224 are connected with the frame beams 21 through welding, after the shear connectors 224 are installed, the reinforcing steel bars 225 are bound, the recycled concrete 222 is poured first, and after the recycled concrete 222 reaches a certain strength, the common concrete 223 is poured. When the composite floor slab 20 adopts prefabricated slabs, the arrangement of the shear connectors 224, the pouring of the recycled concrete layer 222 and the ordinary concrete layer 223 are all completed in a factory, and the installation of the composite floor slab 20 is completed at a construction site.
Other constructions and operations of a novel fabricated steel-recycled concrete hybrid frame structure system 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. Novel assembled steel-recycled concrete mixed frame structure system, which is characterized by comprising frame columns (10), composite floor slabs (20) and beam column nodes (30), wherein:
the frame column (10) is a steel tube recycled concrete column and comprises a hollow steel tube (11) and an internally filled recycled concrete (12); each frame column (10) extends along the vertical direction, and a plurality of frame columns (10) are arranged in a plurality of rows in the transverse direction and in a plurality of columns in the longitudinal direction;
the composite floor slab (20) is a profiled steel sheet-partially recycled concrete composite floor slab (20), the composite floor slab (20) is supported on the frame columns (10) and comprises frame beams (21) and a plate body (22), and the plate body (22) comprises a profiled steel sheet (221), a recycled concrete layer (222), a common concrete layer (223), shear connectors (224) and distribution steel bars (225); the frame beam (21) is an I-shaped section steel beam and consists of an upper flange (211), a web (213) and a lower flange (212); the frame beam (21) is connected with the profiled steel sheet (221) and the shear connector (224) through welding; the profiled steel sheet (221) is connected with the recycled concrete layer (222) and the common concrete layer (223) by adopting the shear connector (224); the recycled concrete layer (222) is adopted in the concrete part below the central and axial parts of the composite floor slab (20), and reinforcement is constructed according to the construction; the common concrete layer (223) is adopted in the middle and upper parts of the shafts of the composite floor slab (20) and the rebars (225) are distributed in a configuration mode;
the beam column node (30) is a unilateral high-strength bolt end plate connecting node (30), and comprises the frame column (10), the frame beam (21), an end plate (31) and a unilateral high-strength bolt (32); the frame beam (21) is welded with a triangle (214) at the upper flange (211) and the lower flange (212) at the end part connected with the end plate (31); the frame beam (21) and the end plate (31) are welded by double-sided fillet weld; the hollow steel pipe (11) of the frame column (10) is vertically penetrated at the joint (30), bolt holes are correspondingly formed in the pipe wall of the hollow steel pipe (11) and the end plate (31), the unilateral high-strength bolts (32) penetrate through the bolt holes reserved in the end plate (31) and the pipe wall of the hollow steel pipe (11) from outside to inside, and the unilateral high-strength bolts (32) are screwed from the outer side of the hollow steel pipe (11) to connect the end plate (31) with the frame column (10); and after the frame beam (21) is installed, pouring the recycled concrete (12) into the empty steel pipes (11) of the frame column (10).
2. A new fabricated steel-recycled concrete mixed frame structure system according to claim 1, characterized in that the cross section of the hollow steel tube (11) in the frame column (10) is circular, square or rectangular.
3. A new fabricated steel-recycled concrete hybrid frame structure system according to claim 1, characterized in that the cross-sectional form of the frame beams (21) is a rolled or welded i-section; the end flange of the frame beam (21) is welded with the triangular plate (214), the triangular plate (214) is consistent with the width direction of the upper end of the end plate (31) along the width direction of the upper flange (211), and the triangular plate (214) is consistent with the width direction of the lower end of the end plate (31) along the width direction of the lower flange (212).
4. The novel fabricated steel-recycled concrete mixed frame structure system according to claim 1, wherein the end plates (31) of the nodes (30) are overhanging end plates (31), the cross section shapes of which are circular arc-shaped and rectangular, and correspond to the round steel tube recycled concrete column and the square steel tube recycled concrete column respectively; the length of the end plate (31) along the circumferential direction of the frame column (10) is 1/4 or less of the outer circumference of the frame column (10).
5. The novel fabricated steel-recycled concrete mixed frame structure system of claim 1, wherein the single-sided high-strength bolts (32) of the node (30) are special high-strength bolts that can be screwed and fixed on one side with a wrench or other installation tool.
6. The novel fabricated steel-recycled concrete mixed frame structure system according to claim 1, wherein the profiled steel sheet (211) of the composite floor slab (20) has a cross-sectional form of an open type, a closed type or a reduced type; the shear connector (224) of the composite floor slab (20) is a stud; the concrete part of the composite floor slab (20) is prefabricated or cast-in-situ in a factory, the neutralization shaft is determined according to calculation, when concrete is poured, the recycled concrete layer (222) is poured first, and when the recycled concrete layer (222) reaches a certain strength, the common concrete layer (223) is poured.
7. The novel fabricated steel-recycled concrete mixed frame structure system according to claim 1, wherein the recycled concrete (12) used in the frame column (10) and the recycled concrete layer (222) used in the composite floor slab (20) have a recycled substitution rate of not more than 50%, and the strength grade is RC 30-RC 60.
8. The novel fabricated steel-recycled concrete mixed frame structure system according to claim 1, wherein the steel materials used for the hollow steel pipes (11) in the frame columns (10), the frame beams (21) and the profiled steel sheets (221) in the composite floor slab (20) are of the types Q235, Q345, Q420 or Q490.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465078.0A CN108104263B (en) | 2017-12-28 | 2017-12-28 | Novel assembled steel-recycled concrete mixed frame structure system |
| PCT/CN2018/114871 WO2019128492A1 (en) | 2017-12-28 | 2018-11-09 | Novel prefabricated frame structure system combining steel and recycled concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711465078.0A CN108104263B (en) | 2017-12-28 | 2017-12-28 | Novel assembled steel-recycled concrete mixed frame structure system |
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| CN108104263A CN108104263A (en) | 2018-06-01 |
| CN108104263B true CN108104263B (en) | 2023-12-29 |
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| WO2019128492A1 (en) * | 2017-12-28 | 2019-07-04 | 清华大学 | Novel prefabricated frame structure system combining steel and recycled concrete |
| CN110016984B (en) * | 2019-04-29 | 2020-11-20 | 华北水利水电大学 | H-shaped steel and construction method of building with H-shaped steel structure |
| CN113338491B (en) * | 2021-06-09 | 2022-04-05 | 中铁建工集团有限公司 | Assembled circular steel tube bundle corrugated plate combined wall column beam structure system |
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