CN116290373A - Steel frame assembled house system of trapezoid concrete filled steel tubular column and construction method - Google Patents
Steel frame assembled house system of trapezoid concrete filled steel tubular column and construction method Download PDFInfo
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- CN116290373A CN116290373A CN202211578740.4A CN202211578740A CN116290373A CN 116290373 A CN116290373 A CN 116290373A CN 202211578740 A CN202211578740 A CN 202211578740A CN 116290373 A CN116290373 A CN 116290373A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 393
- 239000010959 steel Substances 0.000 title claims abstract description 393
- 239000004567 concrete Substances 0.000 title claims abstract description 240
- 238000010276 construction Methods 0.000 title claims abstract description 56
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 137
- 239000011229 interlayer Substances 0.000 claims abstract description 74
- 239000010410 layer Substances 0.000 claims abstract description 50
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 238000009417 prefabrication Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000011372 high-strength concrete Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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- 238000000638 solvent extraction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 1
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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
- E04B1/30—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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building 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
- 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
- E04B5/17—Floor structures partly formed in situ
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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
- 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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The invention discloses a trapezoid concrete filled steel tubular column steel frame assembled house system and a construction method, wherein the trapezoid concrete filled steel tubular column comprises trapezoid concrete filled steel tubular columns, floor common steel beams, first connecting nodes, second connecting nodes, floors and light walls; the trapezoid concrete filled steel tube column comprises two or three concrete filled steel tube end columns, wherein adjacent concrete filled steel tube end columns are connected through an inner reinforcing beam and an interlayer reinforcing beam to form a trapezoid concrete filled steel tube column structure; along the width and length directions of the house, the trapezoid concrete filled steel tube column is connected with the floor common steel beam at the layer height position as a whole through a first connecting node, and the floor is fixed on the interlayer reinforcing beam and the floor common steel beam; the upper layer steel bar of the floor slab passes through the neutral position of the trapezoid steel tube concrete column; the connected concrete filled steel tube end posts are connected through a second connecting node along the height direction of the house; the light wall body is welded and connected with the trapezoid steel tube concrete column and the steel beam through the U-shaped steel clamp.
Description
Technical Field
The invention belongs to the field of steel structure building structures, and particularly relates to a trapezoid steel tube concrete column steel frame assembled house system and a construction method.
Background
Compared with the traditional concrete building, the steel structure building has the advantages that steel plates or section steel are used for replacing reinforced concrete, the strength is higher, the shock resistance is better, the steel structure building is applied to a plurality of buildings, the steel structure building is widely applied to the residential field, for example, as early as in patent CN200310122950.3, a steel structure house is disclosed, the steel structure building comprises steel pipe concrete columns, steel beams, supports, beam-column connection nodes between the steel beams and the steel pipe concrete columns, connection nodes between the supports and the beam columns, floors and walls, the floors are paved on the steel beams, the walls are arranged between the columns, wherein the columns adopt rectangular steel pipes with high-strength concrete, the beams are H-shaped steel beams, the floors adopt self-supporting concrete floors, and the walls adopt cast-in-situ integral light walls; for another example, in patent CN202010212095.9, an assembled steel-reinforced concrete column steel frame-beam column wall residential system is disclosed, which comprises a column body with a rectangular section, an H-shaped steel beam, a beam column wall, a floor slab, a base layer inner wall body and a containment outer wall; the patent CN201920406669.9 discloses a detachable steel beam-steel tube concrete column core-penetrating type connecting node, which comprises a steel tube concrete column, H-shaped steel beams and a node domain, wherein one end of the steel tube concrete column is provided with a flange ring plate, the node domain comprises a steel tube and a vertical connecting plate penetrating through the steel tube, reinforcing ring plates are arranged above and below the steel tube, the vertical connecting plate and the reinforcing ring plates are all fixed through welding, ultra-high performance concrete is poured in the steel tube, the flange ring plate is connected with the reinforcing ring plates, and four H-shaped steel beams are fixed on the node domain in a cross shape;
however, the concrete filled steel tubular columns adopted in the above patent are basically rectangular columns with larger sizes, and when the section size of the rectangular concrete filled steel tubular columns is larger, the restraint effect of the side wall of the steel tube on the concrete is poorer, if the expected restraint effect is achieved, relevant constructional measures are required to be adopted or the thickness of the steel plate is increased, so that the material consumption or the processing and manufacturing difficulty is increased, and the overall manufacturing cost is increased. When the section of the concrete filled steel tube column is larger, the composite stress performance of the poured concrete is reduced due to the separation between the poured concrete and the steel tube caused by shrinkage due to the different material properties of the concrete and the steel. If multi-cavity steel pipe concrete or multi-cavity steel plate shear walls are adopted in houses, the concrete consumption and the steel consumption are increased, and the dead weight is increased, so that the horizontal earthquake force is increased. And the pillars with larger sizes can protrude out of the building wall, so that inconvenience in appearance or use is caused, and the building use requirement is not easy to meet. Concrete filled steel tubular columns with larger cross sections cannot be used in building wall spaces such as houses where specific living requirements are present.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a trapezoid steel tube concrete column steel frame assembled house system and a construction method, wherein the rigidity of a steel frame is increased, components are simple to connect, industrial production is convenient, construction is convenient and quick, the section size of a rigid frame member is small, the self weight is light, the requirements on transportation and hoisting equipment are low, and the applicability to building functions is high.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a trapezoid concrete filled steel tubular column steel frame assembled house system, which comprises trapezoid concrete filled steel tubular columns, floor common steel beams, first connecting nodes, second connecting nodes, floors and light walls;
the trapezoid concrete filled steel tube column comprises two or three concrete filled steel tube end columns, wherein adjacent concrete filled steel tube end columns are connected through an inner reinforcing beam and an interlayer reinforcing beam to form a trapezoid concrete filled steel tube column structure;
along the width and length directions of the house, the trapezoid concrete filled steel tube column is connected with the floor common steel beam at the layer height position as a whole through a first connecting node, and the floor is fixed on the interlayer reinforcing beam and the floor common steel beam; the upper layer steel bars of the floor slab pass through the gaps of the trapezoid steel tube concrete column (the gaps refer to the gaps formed by gaps between the interlayer reinforcing beams and the adjacent inner reinforcing beams and the gaps formed by gaps between the upper and lower adjacent inner reinforcing beams);
the connected concrete filled steel tube end posts are connected through a second connecting node along the height direction of the house;
the light wall body is welded and connected with the trapezoid steel tube concrete column and the steel beam through the U-shaped steel clamp.
As a further technical scheme, the light wallboard is embedded in the space formed by the inner reinforcing beam, the interlayer reinforcing beam and the steel pipe concrete end column.
As a further technical scheme, flange plates are welded at the top and/or the bottom of the concrete filled steel tube end posts, bolt holes are formed in the flange plates, and the upper and lower adjacent concrete filled steel tube end posts are connected through the flange plates and connecting pieces.
As a further technical scheme, the outward extending diaphragm plates are welded on the flange in an outward extending manner and are connected with the interlayer reinforcing cross beam through the web plate.
As a further technical scheme, the interlayer reinforcing beams and the inner reinforcing beams are H-shaped steel, I-shaped steel or rectangular steel pipes.
As a further technical scheme, the common floor steel beam is H-shaped steel or I-shaped steel, and rectangular steel beams can be adopted according to calculation requirements.
As a further technical scheme, the bending rigidity of the floor common steel beam is larger than that of the interlayer reinforcing beam, and the bending rigidity of the interlayer reinforcing beam is larger than that of the interlayer reinforcing beam.
As a further technical scheme, the material strength of the floor common steel beam is greater than that of the interlayer reinforcing beam, and the material strength of the interlayer reinforcing beam is greater than that of the interlayer reinforcing beam.
As a further technical scheme, the cross section height of the floor common steel beam is larger than that of the interlayer reinforcing beam, and the cross section height of the interlayer reinforcing beam is larger than that of the interlayer reinforcing beam.
As a further technical scheme, the floor slab adopts a self-supporting template concrete floor slab, and the self-supporting template comprises a steel bar truss and a profiled steel sheet, wherein the steel bar truss is fixedly connected with the profiled steel sheet.
As a further technical scheme, the light wall body is an assembled wall board and is prefabricated in a factory.
In a second aspect, the invention further provides a construction method based on the trapezoid concrete filled steel tube column steel frame assembled house system, which comprises the following steps:
step 1: performing foundation construction;
step 2: prefabricating and processing the trapezoid concrete filled steel tube column in a factory in advance, or carrying out the prefabrication and processing simultaneously with the foundation construction of the step 1; during processing and manufacturing, lofting is carried out according to a construction drawing or a processing drawing, and a steel beam and an end post are cut; each section of trapezoid steel tube concrete column is connected with an interlayer reinforcing cross beam, and whether a reinforcing cross diaphragm is arranged at the column position of the upper flange and the lower flange of the beam or a reinforcing annular plate is arranged outside the column is determined according to the design in the column; then, welding connection or bolt connection of the inner reinforcing beam and the end column is carried out, concrete is poured into the steel pipe, a horizontal pouring method can be adopted, and meanwhile, a plurality of sections of trapezoid steel pipe concrete columns can be poured together;
step 3: transporting, hoisting and splicing the trapezoid concrete filled steel tube column and the common concrete column;
step 4: connecting floor common steel beams between the trapezoid concrete filled steel tube columns and the common concrete columns;
step 5: hoisting and connecting the prefabricated stairway;
step 6: laying a self-bearing composite floor slab or placing an integral prefabricated large plate; after the floor bottom plate is lifted, installing electromechanical pre-buried pipelines on the construction operation surface, and binding reinforcing steel bars of the floor support;
step 7: pouring floor slab concrete;
step 8: performing the masonry operation of the light inner wall; the neutral position of the trapezoid steel tube concrete column is also used for installing aerated concrete blocks or aerated concrete prefabricated wallboards at the same time;
step 9: installing a light composite external wall panel;
step 10: and performing non-main construction to form a complete residential building system.
The trapezoid steel structure frame assembled house system and the construction method have the advantages that:
1. according to the invention, one concrete filled steel tube column in the prior art is designed into the trapezoid concrete filled steel tube column, and the trapezoid concrete filled steel tube column specifically comprises two or three concrete filled steel tube end columns, wherein adjacent concrete filled steel tube end columns are connected through interlayer reinforcing beams and interlayer reinforcing beams to form a trapezoid column structure; compared with the original single large-size concrete filled steel tube column, the structural rigidity is increased, the anti-seismic performance is good, the component connection is simple, the construction is convenient, and the construction period is shortened; meanwhile, the bottom template of the floor slab is placed on the interlayer reinforcing beam and the floor common steel beam, the shearing force of the floor slab is transmitted through the studs arranged on the interlayer reinforcing beam and the floor common steel beam, the upper layer steel bar of the floor slab can pass through the neutral position of the trapezoid steel tube concrete column or bypass other vertical members, the problems of bar planting and the like do not exist, namely, the steel bar of the floor slab can avoid the vertical stress members, the complex connection treatment on site is almost avoided, and then the arrangement of the site pipeline or the pouring of concrete are carried out. The floor slab can also be laid on the interlayer reinforcing cross beam and the interlayer reinforcing cross beam positioned at the top of the concrete filled steel tube end column by adopting a prefabricated large plate, and then pouring of a plate seam of the roof beam is carried out.
2. The in-layer reinforcing cross beams are only arranged between the end posts and are transversely arranged, so that the influence on the arrangement of building holes is small, the reservation and the pre-embedding of equipment pipelines are facilitated, and the applicability to building functions is strong;
3. the steel pipe concrete end column provided by the invention forms a space stress system with larger rigidity through rigid connection of the interlayer reinforcing cross beam and the interlayer reinforcing cross beam, can resist larger bending moment and axial force, and reduces column top deformation under the action of horizontal force by improving the linear rigidity of the steel pipe concrete end column; the overall stress performance is improved through the interlayer reinforcing beams and the in-layer reinforcing beams, the trapezoidal steel pipe concrete column is a stress mode of the laminated space truss, and the rigidity is greatly improved compared with the rigidity of the existing steel frame structure.
4. According to the invention, based on the concept of saving construction cost, an optimal design scheme is provided by analyzing the stress of each beam, namely the bending rigidity of the floor common steel beam is larger than that of the interlayer reinforcing beam, and the bending rigidity of the interlayer reinforcing beam is larger than that of the interlayer reinforcing beam; the material strength of the floor common steel beam is greater than that of the interlayer reinforcing beam, and the material strength of the interlayer reinforcing beam is greater than that of the interlayer reinforcing beam; the cross section height of the floor common steel beam is larger than that of the interlayer reinforcing beam, and the cross section height of the interlayer reinforcing beam is larger than that of the in-layer reinforcing beam.
5. The self weight of the trapezoid steel tube concrete column component is lighter than that of the prefabricated shear wall, the large steel tube concrete column and the like, the matched hoisting equipment, the matched transportation equipment and the like are smaller in specification, and the construction and installation cost is saved. For the integral residential building, the integral weight is reduced, and the engineering cost of foundation treatment is saved.
6. The column bottom bending moment born by the trapezoid concrete filled steel tube column is much smaller than that of a column with a common frame structure according to calculation and analysis, meanwhile, the adopted concrete filled steel tube column is smaller in sub-section, and column foot arrangement, corresponding embedded parts and the like are saved. The self weight is light, the horizontal force is small, the bending moment of the column bottom is small, and the cost of the arranged column foundation is low.
7. The included angle of the interlayer reinforcing beam, the interlayer reinforcing beam and the end column is 90 degrees, the light concrete wall and the building blocks do not need to be subjected to construction by cutting oblique angles during masonry, and the construction of the wall is more convenient compared with an inclined strut structure.
8. Compared with a residential system of a steel plate shear wall or a precast concrete shear wall, the construction that the stress steel bars of the upper support around the floor are not required to be planted with bars or perforated holes is facilitated, and binding of hogging moment steel bars is facilitated.
9. Because the light building blocks or the light wall plates with lower strength are built in the trapezoid steel tube concrete column, the trapezoid steel tube concrete column is easy to open slots on site relative to a steel plate shear wall or a precast concrete shear wall so as to install electromechanical pipelines.
10. Because the trapezoid concrete filled steel tubular column of the system does not need to cast concrete on site, node connection does not need wet concrete operation, the trapezoid concrete filled steel tubular column on site is lifted and spliced and then is installed with steel beams and other follow-up works, excessive concrete and steel structure working procedure cross operation is not needed, and the construction period is shortened. The corresponding construction measures are also low in cost compared with other structural systems.
Drawings
FIG. 1 is a schematic diagram of a prior art frame column construction;
fig. 2 is a schematic view of a frame column structure according to the present invention;
FIG. 3 is a schematic diagram of a prior art frame column structure stress analysis;
fig. 4 is a schematic diagram of a frame column structure stress analysis proposed by the present invention;
FIG. 5 is a block diagram of the connection joint of the welded short beam, flange weld, web stud of the present invention between the column and steel beam;
FIG. 6 is a block diagram of the connection node of the flange weld and web stud of the post and steel beam of the present invention;
FIG. 7 is a block diagram of a connecting node of the invention in which the post is connected to the overhanging diaphragm of the steel beam;
FIG. 8 is an isometric view of a trapezoidal concrete filled steel tubular column of the present invention;
FIG. 9 is a view showing the construction of the connecting nodes of adjacent layers of the trapezoid concrete filled steel tubular column of the present invention;
FIG. 10 is an isometric view of a self-supporting form of the present invention;
FIG. 11 is a block diagram of a connection node of the wall panel and steel structural beam of the present invention;
FIG. 12 is an elevation view of a lightweight wall according to the invention;
FIG. 13 is a schematic plan view of the general structure of the present invention;
FIG. 14 is a schematic diagram of the overall system of the present invention in force conditions;
fig. 15 is a schematic diagram of the stress situation of a conventional frame system.
In the figure: the concrete filled steel tube comprises a 1 trapezoid concrete filled steel tube column, a 1-1 concrete filled steel tube end column, a 1-2 inner reinforcing beam, a 1-3 inner reinforcing beam, a 2-floor common steel beam, a 3-beam web connecting plate, a 4-overhanging reinforcing annular plate, a 5-welded short beam, a 6-overhanging diaphragm plate, an 8-flange plate, a 9-steel bar truss, a 10-profiled steel plate, an 11-light wall body, a 12U-shaped steel clip and a 13 floor.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular forms also are intended to include the plural forms unless the present invention clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
example 1
Referring to the drawings, the embodiment discloses a trapezoid concrete filled steel tube column steel frame residential structure system, the overall structure is shown in fig. 13, the structure system comprises a trapezoid concrete filled steel tube column 1, a floor common steel beam 2, beam column nodes of the trapezoid concrete filled steel tube column 1 and the floor common steel beam 2, a floor 13 and a light wall 11, the floor 13 is paved on the floor common steel beam 2 and the upper trapezoid concrete filled steel tube column 1, and the light wall 11 is arranged between the trapezoid concrete filled steel tube column 1 and the floor common steel beam 2.
Further, as shown in fig. 2 and 8, the structure of the trapezoid concrete filled steel tube column 1 in this embodiment is a trapezoid concrete filled steel tube column, which includes two or three concrete filled steel tube end columns 1-1, and adjacent concrete filled steel tube end columns 1-1 are connected through an intra-layer reinforcing beam 1-2 and an inter-layer reinforcing beam 1-3 to form a trapezoid column structure.
Further, the steel pipe concrete end column 1-1 adopts a rectangular steel pipe column (high-strength concrete is poured into a steel pipe, and the process is completed in a factory); two or three inner reinforcing beams 1-2 are arranged in the column height area of the steel tube concrete end column 1-1, and the inner reinforcing beams 1-2 are welded with the steel tube concrete end column 1-1; the interlayer reinforcing beam 1-3 is arranged at the layer height position of the steel tube concrete end column 1-1, the interlayer reinforcing beam 1-2 and the interlayer reinforcing beam 1-3 are embedded with wallboards, and the process can be completed in a factory or installed on site.
In order to ensure beautiful appearance, the trapezoid concrete filled steel tubular column 1 is preferably equal to the wall of a building, is not suitable for protruding the wall of a residence, and can be 160mm, 180mm, 200mm, 250mm, 300mm and the like in width.
In order to ensure rigidity, the section length of the concrete filled steel tube end column 1-1 of the trapezoid concrete filled steel tube column 1 is at least 200mm, the longest length is 600mm, the distance between two adjacent concrete filled steel tube end columns 1-1 is not excessively large, and the internal clear distance can be a multiple of 300mm, namely the modulus, so that prefabricated wallboards can be conveniently installed in the interior, such as clear distances of 600mm,900mm,1200mm and the like.
In order to improve the restraining capability of the interlayer reinforcing beams and the intra-layer reinforcing beams on the two concrete filled steel tube end posts 1-1, the net distance between the two concrete filled steel tube end posts 1-1 is not more than 1500mm, at least one intra-layer reinforcing beam 1-2 is arranged in the middle of the layer height, and the cross section width of the intra-layer reinforcing beam 1-2 is equal to the thickness of a residential wall, namely, the cross section width is equal to the width of the concrete filled steel tube end posts 1-1, and can be slightly smaller than the column width. The in-layer reinforcing beam 1-2 has the function of reinforcing the connection of the two concrete end posts 1-1, improving the lateral rigidity of the trapezoid steel tube concrete post and forming a lattice steel post with larger rigidity.
If one in-situ reinforcing beam is arranged, the reinforcing beam is arranged at the center of the height of each floor; if two inner reinforcing beams are arranged, the three equal-column-height parts are arranged; after the trapezoid steel tube concrete column frame is assembled on site, the inner space of the trapezoid steel tube concrete column frame is filled with wallboards, the wallboards can be vertical boards or horizontal boards.
Furthermore, as the common floor steel girder mainly bears the vertical load transmitted by the floor, including the dead weight of the floor, the live load in the room and the like, the main stress mode is mainly midspan bending. Therefore, when the section of the common floor steel beam is selected, the selected section is larger than the sections of the interlayer reinforcing cross beam and the interlayer reinforcing cross beam in the trapezoid steel tube concrete column, and the H-shaped steel beam or I-shaped steel which saves steel is preferably selected. If the internal force calculation requirements of shearing force, bending moment, torque and the like are required to be met, rectangular steel beams with good stress performance can be adopted. The section width of the concrete filled steel tube column is larger than the end column width of the trapezoid concrete filled steel tube column. If no building wall is arranged under the beam in the room, the section of the beam is not too high to prevent the influence on the using space under the beam.
The interlayer reinforcing beam at the top of the trapezoid steel tube concrete column, namely the reinforcing beam laid on the floor, can be the same as or slightly different from the section size of the floor common steel beam, and mainly balances the bending moment transmitted by the floor common steel beam to the upper and lower column head joints of the end column of the trapezoid steel tube concrete column, thereby reducing the end bending moment transmitted by the floor common steel beam in the end column of the trapezoid steel tube concrete column. If the width of the building wall is not required by the aesthetic property of the width of the building wall, the section width of the building wall can be larger than the width of the end column of the trapezoid steel tube concrete column. Because the gaps in the ladder columns are masonry wall bodies, the requirements on the height of the using space are avoided, and the height requirements on the using space under the floor common steel beams are different, the section height of the interlayer reinforcing cross beam can be selected to be higher than the section height of the floor common steel beams according to the calculation requirements in principle.
The in-layer reinforcing beam mainly divides the two end posts of the trapezoid steel tube concrete column into a plurality of sections of stress units respectively, so that bending moment generated by the two end posts of the trapezoid steel tube concrete column under the horizontal action is reduced, meanwhile, the calculated length of the end posts in the plane of the trapezoid steel tube concrete column can be reduced, and the slenderness ratio of the end posts in the main bending direction of the trapezoid steel tube concrete column is reduced. In the embodiment, the connection of the two end posts is reinforced by adopting the distributed dense beams, so that a trapezoid steel tube concrete column integral stress unit with higher rigidity is formed, and the section of the in-layer reinforcing beam is smaller than that of the interlayer reinforcing beams at the upper end and the lower end of the end post. Therefore, in section selection, the in-layer reinforcement beam is mainly bent at two ends, unlike the floor common steel beam which is mainly subjected to vertical load under the floor slab mainly bent in midspan. The section of the in-situ reinforcing beam adopts H-shaped steel beams or I-steel with smaller sections and better bending performance, and most of the sections are constructed. If calculation is needed, the in-layer reinforcing beam can also adopt a steel beam with a larger section, but the cross section size of the in-layer reinforcing beam is not suitable to be larger than that of the two end posts. Because of the building requirement, the section width of the reinforced concrete column can not protrude out of the wall surface of the building, namely is not larger than the end column of the trapezoid concrete filled steel tube column, so that the reinforced cross beam in the layer is prevented from protruding out of the wall surface to influence the appearance. The section of the in-situ reinforcing beam is selected to be smaller than the section of a common steel member of a building wall or a trapezoid steel tube concrete column end column, the height direction of the cross section is not limited, but a larger steel beam section is not suitable to be adopted according to the economical principle.
Because of the requirements of building space, generally, the span of the floor common steel beam is larger, the section is larger, and in order to save steel, higher material strength (such as Q355 grade steel and Q345 grade steel) can be preferentially selected so as to reduce the height of the beam and improve the use height of the space under the beam. If the calculation is carried out, when the cross section of the interlayer common cross beam at certain parts of the building is not large and the stress requirement can be met without higher material strength, Q235 grade steel with lower strength can be adopted for saving the cost.
When the section is selected, the height of the cross section of the floor common steel beam is smaller than or equal to the cross section of the inter-layer reinforcing beam, and the cross section of the inter-layer reinforcing beam is the smallest among the three. In the selection of the section form, H-shaped steel beams or I-steel beams with better bending resistance are preferably selected for saving steel materials, and then rectangular steel tube sections or sections with other shapes are selected.
In the selection of the section processing types of the steel column and the steel beam, the section of the section steel with better economy is preferentially selected, and then a relatively complex welding section is processed, so that the processing and manufacturing cost of the component is reduced.
Further, in this embodiment, the bending stiffness of the floor common steel beam is the largest, the bending stiffness of the inter-layer reinforcing beam is the second smallest, and the bending stiffness of the inter-layer reinforcing beam is the smallest among the three.
Specifically, the floor common steel beam, the interlayer reinforcing beam and the in-layer reinforcing beam are all horizontal beams, but the floor common steel beam is a main component of the trapezoid steel tube concrete column and forms the trapezoid steel tube concrete column together with the interlayer reinforcing beam. After the trapezoid concrete filled steel tube column is formed by processing and mounting in a factory, the trapezoid concrete filled steel tube column is transported to a construction site. The floor common steel beam is a connecting beam between a trapezoid steel tube concrete column and a trapezoid steel tube concrete column, between a common column and a trapezoid steel tube concrete column, and between a common column and a common column, and is used for hoisting and splicing the floor common steel beam after the hoisting and splicing of the on-site column is completed.
The studs are arranged on the interlayer reinforcing beams and the floor common steel beams, the floor slab is placed and installed, and the vertical force on the floor slab is transferred to the beams. The inner reinforcing beam in the trapezoid steel tube concrete column is not provided with a floor slab, and vertical force conducted on the floor slab does not exist. Because the span of the floor common steel beam is large relative to the span of the cross beam between the two end posts of the trapezoid steel tube concrete column, the bending moment generated by the floor dead weight and the vertical load on the floor common steel beam is larger than the bending moment generated in the interlayer reinforcing beam.
And under the stress, after the inner reinforcing cross beam and the interlayer reinforcing cross beam are just connected with the end posts of the trapezoid steel tube concrete column, the bending moment generated in the vertical member by the horizontal force of the whole building is balanced, so that the bending moment in the two end posts of the trapezoid steel tube concrete column is reduced, and the bending moment reduction amplitude is larger compared with that of an independent common post. At this time, the trapezoid steel tube concrete column is a space laminated hollow truss, the inner reinforcing beam is a right-angle web member of the truss, and the trapezoid steel tube concrete column is mainly used for resisting internal force generated by horizontal force (such as wind load or earthquake action) of a building.
The main stress mode of the in-layer reinforcing beam is that when the two end columns are bent under the action of horizontal force, force couples are formed to jointly resist bending moment, and the two end columns are pulled and pressed, so that relative deformation exists. Due to the tendency of relative deformation, there is an end shear of the beam inside the in-layer reinforcing beam, creating a bending moment in the in-layer reinforcing beam. Meanwhile, the deformation of the two end posts of the trapezoid steel tube concrete column is in a shear bending shape under the action of horizontal force, bending corner deformation exists in the middle of the posts, and the inner reinforcing cross beam resists the occurrence of the corner, so that the end bending moment of the cross beam is also formed. For the two reasons, the bending moment mainly borne by the in-layer reinforcing beam is superposed by the same-direction bending moment of the two ends of the beam, and the beam has smaller bending moment at the midspan position and a neutral point.
The floor common steel girder and the interlayer reinforcing beam mainly play a role in bearing the dead weight of the floor slab, the load on the floor slab or the dead weight of the building partition wall body, and the bending moment generated in the floor common steel girder and the interlayer reinforcing beam is larger. The floor common steel beams and the interlayer reinforcing beams bear the load of the vertical load and transmit the internal force generated by the partial load to the vertical components, such as the trapezoid steel tube concrete columns or the common columns. Under vertical load, the bending moment is represented as larger bending moment in the beam span, the supports at the two ends of the beam are different in bending moment and smaller in numerical value, and the bending moment is different from the stress mode of the reinforcing beam in the layer.
Although the in-layer reinforcing cross beam is not provided with a floor slab, light building blocks can be built on the beam or light wall boards can be installed on the beam to form a building wall body, so that the effect of dividing rooms is achieved.
Further, in order to realize connection of the floor common steel beam 2 and the trapezoid steel tube concrete column 1, a short beam 5 is welded on the side face of the steel tube concrete end column 1-1 of the trapezoid steel tube concrete column 1, the floor common steel beam 2 and the welding short beam 5 are fixedly connected through a web plate connecting plate 3, and a column stiffening plate is arranged in the steel tube concrete end column 1-1.
Further, the height of the trapezoid concrete filled steel tubular column 1 is the same as the layer height, and the trapezoid concrete filled steel tubular column can be manufactured in units of each layer in factory processing, or can be manufactured by two layers of through heights. The trapezoid steel tube concrete column 1 can be welded by adopting groove full penetration at the position 1.2 m-1.3 m away from the beam surface.
Further, the floor 13 is a self-supporting template reinforced concrete floor, the self-supporting template comprises a steel bar truss 9 and a profiled steel sheet 10, and the self-supporting template is supported on the inner reinforcing beams at the tops of the floor common steel beam 2 and the trapezoid steel tube concrete column 1, and concrete is poured and rammed on site to form the floor.
Further, the light wall 11 is a prefabricated reinforced concrete wallboard, and the light wall 11 is welded and connected with the trapezoid steel tube concrete column 1 and the floor common steel beam 2 through the U-shaped steel clamps 12.
Furthermore, the connecting node of the floor common steel beam 2 and the concrete filled steel tube end column 1-1 adopts a beam column rigid connection mode of factory welding short beams, field flange welding and web bolting; the inner reinforcing beam 1-2 is directly welded with the concrete filled steel tube end column 1-1 in a factory; the wall boards between the floor common steel beam 2 and the steel pipe concrete end column 1-1 are preassembled in a factory, and can also be installed on site;
further, the upper and lower layers of the concrete filled steel tube end column 1-1 are connected by adopting a flange plate and high-strength bolts as shown in fig. 5 to form rigid connection; the top and/or the bottom of the steel tube concrete end column 1-1 are/is welded with a flange plate 8, the flange plate 8 is provided with bolt holes, and the upper and lower adjacent steel tube concrete end columns are connected through the flange plate 8 and bolts. The connection between the upper layer and the lower layer of the steel pipe concrete end column 1-1 can be realized by adopting a flange plate to connect at the junction of floors or welding at the position 1-1.3 m above the junction of floors.
Further, as shown in fig. 9, an overhanging diaphragm plate 6 is welded on the extension of a flange 8 at the top of the concrete filled steel tube end column 1-1, and the overhanging diaphragm plate 6 is connected with the floor common steel beam 2 through a beam web connecting plate 3.
Furthermore, the connection node of the floor common steel beam 2 and the concrete filled steel tube end column 1-1 can also adopt a beam column rigid connection mode of flange welding and web bolting, a connecting plate is welded on the steel column in a factory, and the web of the steel beam is connected through the connecting plate and a bolt, and the flange is welded on site;
further, as shown in fig. 7, the connection node of the floor common steel beam 2 and the steel pipe concrete end column 1-1 can also adopt an overhanging reinforcing ring plate 4 connection mode, an overhanging reinforcing ring plate 4 is arranged at the beam column node, the overhanging reinforcing ring plate 4 and the steel pipe concrete end column 1-1 are welded in a factory to form a fixed connection, the overhanging reinforcing ring plate 4 and the flange of the floor common steel beam 2 are welded on site, and a web plate is connected with an overhanging riser bolt of the steel pipe concrete end column 1-1; the interlayer reinforcing beam 1-2 is directly welded with the concrete filled steel tube end column 1-1 in a factory.
Furthermore, the light aerated concrete wallboard between the in-layer reinforcing beam 1-2 and the steel tube concrete end column 1-1 can be preassembled in a factory to form a whole; the inner reinforcing beam 1-2, the steel tube concrete end column 1-1 and the lightweight aerated concrete wallboard form a sealed trapezoid steel tube concrete column.
In the embodiment, the bottom template of the floor slab is placed on the interlayer reinforcing beam 1-3 at the top of the concrete filled steel tube end column 1-1 and the floor common steel beam 2, the shearing force of the floor slab is transferred through the studs arranged on the interlayer reinforcing beam 1-3 and the floor common steel beam 2, and the upper layer steel bar of the floor slab can pass through the neutral position of the trapezoid concrete filled steel tube column 1 or bypass other vertical components, so that the problems of bar planting and the like are avoided. The steel bars of the floor slab can avoid the vertical stress members, almost no complex connection treatment is carried out on site, and then the arrangement of the field pipelines or the pouring of concrete are carried out. The floor slab can also be laid on the floor beam by adopting a prefabricated large plate, and then pouring of slab joints of the beam roof is carried out.
Further, fig. 1 shows a frame structure formed by two-span steel pipe concrete columns in the prior art, wherein the steel pipe concrete columns are 500mm by 300mm, and the steel pipe wall thickness 12 is filled with C40 concrete. Fig. 2 shows a two-span trapezoidal concrete filled steel tube column frame proposed in this embodiment, wherein the size of the two end columns of the trapezoidal concrete filled steel tube column is 200mm by 200mm, the wall thickness of the steel tube is 10mm, and the concrete filled with C40 is filled. The same horizontal force is applied to the frame structures shown in fig. 1 and 2, the bending moment is shown in fig. 3 and 4, the bending moment of the trapezoid steel tube concrete column is far smaller than the bending moment in the column of the common frame and is about 1/9-1/8 of the bending moment at the column bottom of the common frame through the diagrams in fig. 3 and 4, the structural system of the trapezoid steel tube concrete column can realize the same stress load of the common frame column by using smaller cross-section members, and the trapezoid steel tube concrete column is proved to save materials and has definite and reasonable stress.
The deformation of the two systems is compared, and as shown in fig. 14 and 15, under the action of the same horizontal force, the deformation of the right common frame is larger, and the deformation of the left trapezoid concrete filled steel tubular column frame system is smaller. It is well known that deformation is inversely proportional to the lateral stiffness, and it can be illustrated from fig. 14 and 15 that the stiffness of the left-side ladder-shaped steel tube concrete column frame is greater than the lateral stiffness of the right-side common frame system, and the novel ladder-shaped steel tube concrete column frame structure system has good mechanical properties against horizontal forces.
The building method of the residence system comprises the following steps:
the first step: after the foundation is excavated, the foundation bed layer is placed on a prefabricated building foundation in a factory, and a cast-in-situ foundation can be adopted. When the prefabricated foundation is adopted, a section of concrete filled steel tube column is pre-embedded in a concrete bottom plate or a concrete bearing platform in a factory, and the concrete filled steel tube column comprising column feet and the like can be manufactured in the factory. The section height of the reserved steel tube concrete column is about 1 meter away from the top surface of the raft plate on the upper part of the foundation. If the cast-in-situ foundation is adopted, the foundation manufactured by factory processing is placed at a good position in advance, and then concrete is poured.
And a second step of: the prefabricated machining of the trapezoid concrete filled steel tubular column and other components in the factory is performed in advance or almost simultaneously with the foundation construction. During processing and manufacturing, lofting is carried out according to a construction drawing or a processing drawing, and the beam, the column and other dimensions are cut. For convenient transportation and hoisting, 2-3 layers can be used as a section of member. And (3) processing the whole trapezoid steel tube concrete column in a factory, connecting the transverse stiffening beams between the layers, and determining whether to arrange a stiffening diaphragm plate or a stiffening ring plate outside the column at the positions of the upper flange and the lower flange of the beam according to the design in the column. And then, carrying out welding connection or bolting of the inner reinforcing beams and the end posts, and if a plurality of inner reinforcing beams exist, adopting the sequence of welding the middle and the two sides, and symmetrically processing to prevent the deformation of the end post steel pipes.
And then casting concrete in the steel pipe, wherein a horizontal casting method can be adopted, namely, the column is not required to be cast vertically, and the casting method is different from the on-site casting method of the steel pipe concrete. Meanwhile, the multi-section trapezoid concrete filled steel tube column can be poured together, so that the same batch of concrete can be ensured. Maintenance in factories is easier to ensure construction quality compared with on-site construction, and meanwhile, the production of batch members is convenient.
And a third step of: and transporting, hoisting and splicing vertical members such as a trapezoid concrete filled steel tube column or other concrete filled steel tube columns. And (5) splicing and connecting the vertical members in a welding or bolting mode according to the design. The steel structural members are reasonably arranged on site, so that excessive construction working surfaces are prevented from being occupied, and the waste of the site is prevented.
Fourth step: and connecting the floor common steel beams between the trapezoid concrete filled steel tube columns and the common concrete columns, and adopting a bolt connection or welding mode according to the design. The connection sequence of the common floor steel beams suggests that the steel beams at the middle part of the floor plane are firstly connected, and after a stable integral frame is formed, the steel beams are installed around. The secondary stress generated in the structure after the splicing connection of the beams is completed can be reduced by installing the beams from the middle to the two ends of the floor. When the steel beam is hoisted and installed, the upper layer and the lower layer or several layers at the same position can be hoisted or installed simultaneously, so that the construction period is saved, and the construction efficiency is improved. When the floor surface length is not large, one end of the floor surface can be hoisted and spliced in advance to form stable integral operation, and then the floor surface is constructed to the other end in sequence. If a plurality of tower cranes are hoisted simultaneously, the construction area range can be defined in the floor plane in a partitioning mode, and after each section is connected, the common floor steel beams between the areas are connected at the same time.
Fifth step: the hoisting and connection of the prefabricated staircase are completed, so that the subsequent operation of going upstairs and downstairs of construction workers can be facilitated, the construction efficiency is improved, and a vertical pedestrian path is provided for multi-procedure cross construction.
Sixth step: laying a self-bearing composite floor slab or placing an integral prefabricated large plate. The bottom plates of the multi-layer floor slabs at the same plane position can be hoisted and paved at the same time. In the construction sequence, the floor construction from the lower floor to the high place is performed in height, and the floor can be hoisted from one end of the floor to the other end in sequence.
Seventh step: after the floor bottom plate is lifted, the construction operation surface is provided with electromechanical pre-buried pipelines, and the floor support steel bars are bound. Because the system does not have components such as precast concrete walls or steel plate walls and the like, which are difficult to pass through by floor support steel bars, the construction in the step is relatively quick.
Eighth step: and pouring floor slab concrete can be performed in several layers at the same time, so that the construction period is saved. When the floor is paved, the electromechanical pipeline is installed and concrete is poured, the construction such as hoisting, connecting and the like of the multi-layer steel structure beam column at the upper part of the part floor can be simultaneously carried out, and the working procedures are not mutually influenced.
Ninth step: after the floor is manufactured, the light inner wall can be built by several layers at the same time. The hollow space of the trapezoid steel tube concrete column can be used for installing aerated concrete blocks or aerated concrete prefabricated wallboards at the same time.
Tenth step: and installing the light composite external wall panel. The window, heat preservation and the like can be processed and manufactured together in a factory and then transported to the site for hoisting connection.
Eleventh step: and (3) the pre-buried installation of the electromechanical pipeline, such as pipeline grooving, threading and other procedures, are completed. The process does not affect other construction processes of the upper floor, and the problem of cross construction does not exist.
Twelfth step: and (3) the non-main construction procedures of floor surface layer manufacturing, interior wall plastering, roof plastering and the like are performed, and finally a complete residential building system is formed.
The working procedures can be properly adjusted and reasonably arranged according to site construction conditions, so that different working procedures can be carried out in the same time period, the equipment use efficiency and the construction efficiency of site workers are improved, the construction period is saved, and the aim of rapid construction is fulfilled. Meanwhile, the reasonable arrangement of working procedures and the division of construction working surfaces are also beneficial to reducing the mutual influence among different working procedures, so that the time cost waste caused by the delay of the construction period is avoided.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The steel frame assembled house system of the trapezoid steel pipe concrete column is characterized by comprising the trapezoid steel pipe concrete column, a floor common steel beam, a first connecting node, a second connecting node, a floor slab and a light wall body;
the trapezoid concrete filled steel tube column comprises two or three concrete filled steel tube end columns, wherein adjacent concrete filled steel tube end columns are connected through an inner reinforcing beam and an interlayer reinforcing beam to form a trapezoid concrete filled steel tube column structure;
along the width and length directions of the house, the trapezoid concrete filled steel tube column is connected with the floor common steel beam at the layer height position as a whole through a first connecting node, and the floor is fixed on the interlayer reinforcing beam and the floor common steel beam; the upper layer steel bar of the floor slab passes through the neutral position of the trapezoid steel tube concrete column;
the connected concrete filled steel tube end posts are connected through a second connecting node along the height direction of the house;
the light wall body is welded and connected with the trapezoid steel tube concrete column and the steel beam through the U-shaped steel clamp.
2. The fabricated residential system of the trapezoid concrete filled steel tube column steel frame of claim 1, wherein the bending stiffness of the floor common steel beam is greater than the bending stiffness of the interlayer reinforcing beam, and the bending stiffness of the interlayer reinforcing beam is greater than the bending stiffness of the interlayer reinforcing beam.
3. The prefabricated house system of the trapezoid concrete filled steel tube column steel frame, according to claim 2, wherein the material strength of the floor common steel beam is larger than that of the interlayer reinforcing beam, and the material strength of the interlayer reinforcing beam is larger than that of the interlayer reinforcing beam.
4. A trapezoidal concrete filled steel tubular column steel frame fabricated residential system as claimed in any one of claims 1 to 3 wherein the cross-sectional height of said common floor beam is greater than the cross-sectional height of the inter-deck reinforcement beam, and the cross-sectional height of the inter-deck reinforcement beam is greater than the cross-sectional height of the intra-deck reinforcement beam.
5. The prefabricated house system of trapezoid concrete filled steel tube column steel frame according to claim 1, wherein light wall boards are embedded in the space formed by the inner reinforcing cross beams, the interlayer reinforcing cross beams and the concrete filled steel tube end columns.
6. The trapezoid concrete filled steel tube column steel frame assembled house system of claim 1, wherein flanges are welded on the top and/or the bottom of the concrete filled steel tube end columns, bolt holes are arranged on the flanges, and the upper and lower adjacent concrete filled steel tube end columns are connected through the flanges and connecting pieces.
7. The trapezoidal concrete filled steel tubular column steel frame fabricated residential system as claimed in claim 1, wherein the flange is epitaxially welded with overhanging diaphragms connected to the interlaminar reinforcing beams by web connection plates.
8. The trapezoidal concrete filled steel tube column steel frame fabricated residential system as claimed in claim 1, wherein the interlayer reinforcing beams, the inner reinforcing beams and the floor common steel beams are H-shaped steel, I-shaped steel or rectangular steel pipes.
9. The trapezoidal concrete filled steel tubular column steel frame fabricated residential system as claimed in claim 1, wherein said floor slab is a self-supporting form concrete floor slab, and said lightweight wall is a prefabricated wall panel.
10. A method of constructing a trapezoidal concrete filled steel tubular column steel frame fabricated residential system as claimed in any one of claims 1 to 9, comprising the steps of:
step 1: performing foundation construction;
step 2: prefabricating and processing the trapezoid concrete filled steel tube column in a factory in advance, or carrying out the prefabrication and processing simultaneously with the foundation construction of the step 1; during processing and manufacturing, lofting is carried out according to a construction drawing or a processing drawing, and a steel beam and an end post are cut; each section of trapezoid steel tube concrete column is connected with an interlayer reinforcing cross beam, and whether a reinforcing cross diaphragm is arranged at the column position of the upper flange and the lower flange of the beam or a reinforcing annular plate is arranged outside the column is determined according to the design in the column; then, welding connection or bolt connection of the inner reinforcing beam and the end column is carried out, concrete is poured into the steel pipe, a horizontal pouring method can be adopted, and meanwhile, a plurality of sections of trapezoid steel pipe concrete columns can be poured together;
step 3: transporting, hoisting and splicing the trapezoid concrete filled steel tube column and the common concrete column;
step 4: connecting floor common steel beams between the trapezoid concrete filled steel tube columns and the common concrete columns;
step 5: hoisting and connecting the prefabricated stairway;
step 6: laying a self-bearing composite floor slab or placing an integral prefabricated large plate; after the floor bottom plate is lifted, installing electromechanical pre-buried pipelines on the construction operation surface, and binding reinforcing steel bars of the floor support;
step 7: pouring floor slab concrete;
step 8: performing the masonry operation of the light inner wall; the neutral position of the trapezoid steel tube concrete column is also used for installing aerated concrete blocks or aerated concrete prefabricated wallboards at the same time;
step 9: installing a light composite external wall panel;
step 10: and performing non-main construction to form a complete residential building system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211578740.4A CN116290373B (en) | 2022-12-06 | Steel frame assembled house system of trapezoid concrete filled steel tubular column and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211578740.4A CN116290373B (en) | 2022-12-06 | Steel frame assembled house system of trapezoid concrete filled steel tubular column and construction method |
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| Publication Number | Publication Date |
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| CN116290373A true CN116290373A (en) | 2023-06-23 |
| CN116290373B CN116290373B (en) | 2024-04-26 |
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