CN110173076B - Structural system comprising high-seismic-resistance welding-free concrete filled steel tube column and construction method thereof - Google Patents
Structural system comprising high-seismic-resistance welding-free concrete filled steel tube column and construction method thereof Download PDFInfo
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- CN110173076B CN110173076B CN201910483693.7A CN201910483693A CN110173076B CN 110173076 B CN110173076 B CN 110173076B CN 201910483693 A CN201910483693 A CN 201910483693A CN 110173076 B CN110173076 B CN 110173076B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 284
- 239000010959 steel Substances 0.000 title claims abstract description 284
- 239000004567 concrete Substances 0.000 title claims abstract description 72
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 31
- 210000001503 joint Anatomy 0.000 claims abstract description 14
- 238000005728 strengthening Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 42
- 230000002787 reinforcement Effects 0.000 claims description 39
- 239000011150 reinforced concrete Substances 0.000 claims description 27
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 210000000988 bone and bone Anatomy 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/943—Building elements specially adapted therefor elongated
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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
- E04C3/32—Columns; Pillars; Struts of metal
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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Abstract
The utility model provides a high antidetonation exempts from welded steel core concrete column, structure system and construction method thereof, the cylinder includes outside steel pipe and steel core concrete, still include annular connecting plate, tube coupling stiffening plate and link local strengthening rib, annular connecting plate fixed connection is at the terminal surface of the link of outside steel pipe, the part that annular connecting plate stretches out outside steel pipe outside surface is the bolt portion, link local strengthening rib sets up the link in unit tube coupling one side core district forms one section local spliced pole, the cylinder still includes adjacent and two unit tube coupling of butt joint from top to bottom, be upper tube coupling and lower tube coupling respectively, the structure system is the frame construction that still includes roof beam body and cylinder. The connection mode of the invention is a non-welding full bolting structure under a frame structure, has the characteristics of reproducibility and good fireproof performance, meets the aim of industrialization, and most of the work can be completed by a prefabrication method, so that the construction period is shortened, the construction quality is improved, the environment is protected, and the steel can be recycled.
Description
Technical Field
The invention relates to the field of steel pipe concrete, in particular to a structural system comprising a high-seismic-resistance welding-free steel pipe concrete column and a construction method thereof.
Background
The steel pipe concrete structure is one of important assembly type structural forms, the vertical connection of the steel pipe concrete column at present generally adopts a welding form, the on-site vertical connection welding quantity is large, the welding quality is not easy to control during field operation, particularly under northern cold conditions, the welding operation is more difficult to spread, poor welding quality is easily caused, and the shock resistance of a component is further affected.
How to find a concrete filled steel tube structure which can realize simple and convenient vertical connection and does not need welding on site, and a structural system with the advantages of industrial production, greenness, good fireproof performance and good earthquake resistance becomes an important difficult problem for engineering.
Disclosure of Invention
The invention aims to provide a structural system comprising a high-seismic-resistance welding-free steel pipe concrete column and a construction method thereof, and aims to solve the technical problems that the welding quantity is large, the welding quality is not easy to control during field operation when the conventional steel pipe concrete column is vertically connected, and particularly the welding operation is more difficult to spread under the northern cold condition, poor welding quality is easy to cause, and the seismic capacity of a component is further affected.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The high-vibration-resistance welding-free steel pipe concrete column comprises a unit pipe joint, wherein the unit pipe joint comprises an external steel pipe, steel pipe concrete poured inside the external steel pipe, a horizontal annular connecting plate, a vertical pipe joint stiffening plate and a vertical connecting end local reinforcing rib,
The annular connecting plate is fixedly connected to the end surface of the connecting end of the external steel pipe, the annular inner diameter of the annular connecting plate is smaller than or equal to the inner diameter of the external steel pipe section, the annular outer diameter of the annular connecting plate is larger than the outer diameter of the external steel pipe, the part of the annular connecting plate extending out of the outer side surface of the external steel pipe is a bolting part, a group of connecting holes are formed in the bolting part in a circumferential spacing manner, a pipe section stiffening plate is fixedly connected between the bolting part and the outer side surface of the external steel pipe in the circumferential spacing manner, and the pipe section stiffening plate is arranged in a staggered manner in the positions of the connecting holes;
The local reinforcing rib of the connecting end is arranged at the connecting end of the core area at one side of the unit pipe joint, the local reinforcing rib of the connecting end penetrates through the annular connecting plate and is partially embedded into the steel pipe concrete, a section of local reinforcing column is formed at the connecting end, the steel pipe concrete extending into the connecting end is a reinforcing rib connecting part, the external steel pipe extending out of the connecting end is a reinforcing rib extending part,
The local strengthening rib of link includes local reinforcing bar cage, local reinforcing bar cage is including indulging muscle and stirrup, the stirrup is horizontal stirrup and/or spiral stirrup.
The local reinforcement cage is a discontinuous reinforcement cage, and the local reinforcement column is a steel tube reinforced concrete column.
The local reinforcing rib of the connecting end further comprises at least one local reinforcing steel rib arranged in the range of the local reinforcing steel bar cage, and the local reinforcing column is a steel tube steel rib reinforced concrete column.
The high-vibration-resistance welding-free concrete filled steel tube column comprises a column body, wherein the column body comprises two unit pipe sections which are adjacent up and down and are in butt joint, namely an upper pipe section and a lower pipe section,
The annular connecting plate of the upper pipe joint is aligned up and down and tightly propped against the annular connecting plate of the lower pipe joint, and the connecting holes of the upper pipe joint are aligned up and down and are sequentially bolted and/or riveted through steel connecting pieces penetrating through the two holes;
at the junction of the connecting ends of two pipe sections, the overhanging parts of the reinforcing ribs penetrate through the annular connecting plates of the adjacent pipe sections and are buried into the concrete filled steel tube of the connecting ends of the adjacent pipe sections, and a section of local reinforcing column is also formed at the connecting ends of the adjacent pipe sections.
The high-vibration-resistance welding-free concrete filled steel tube column comprises a column body, wherein the column body comprises two unit pipe sections which are adjacent up and down and are in butt joint, namely an upper pipe section and a lower pipe section,
The annular connecting plate of the upper pipe joint is aligned up and down and tightly propped against the annular connecting plate of the lower pipe joint, and the connecting holes of the upper pipe joint are aligned up and down and are sequentially bolted and/or riveted through steel connecting pieces penetrating through the two holes;
Continuous reinforcement cages are arranged in the upper pipe joint and the lower pipe joint in a full length mode to form a full-length steel pipe reinforced concrete column, and the local reinforcing ribs at the connecting ends are local encryption ribs in the continuous reinforcement cages respectively at the connecting positions of the connecting ends of the two pipe joints.
The measures of the local reinforcement are two or more modes of horizontal reinforcement interval encryption, reinforcement limb increase, reinforcement diameter increase, additional local spiral reinforcement, additional local longitudinal reinforcement, additional local horizontal reinforcement or additional local reinforced steel bones.
The structural system comprises a high-seismic welding-free steel tube concrete column, and also comprises a frame structure formed by a beam body fixedly connected with a column body in a beam column connecting node area of the column body, wherein the beam column connecting node area avoids the connecting end joint of two tube joints, the beam body comprises a node area beam section and a site connecting beam section which are directly connected with the column body, the size and the form of the node area beam section and the site connecting beam section are the same, the beam body comprises a beam steel rib,
The inner wall of the external steel pipe is fixedly connected with a column horizontal stiffening plate, a column vertical stiffening plate and a beam web shear plate at positions corresponding to the beam steel bones, the column horizontal stiffening plate is an annular plate, the core area is provided with flowing holes for concrete to flow, the column horizontal stiffening plate is provided with two or more than two channels, the column horizontal stiffening plate is respectively aligned with the upper flange plate and the lower flange plate of the beam steel bones, the column vertical stiffening plate is circumferentially arranged and fixedly connected between the upper column horizontal stiffening plate and the lower column horizontal stiffening plate at intervals, the beam web shear plate is also arranged between the upper column horizontal stiffening plate and the lower column horizontal stiffening plate, the connection mode of the beam web shear plate is the same as that of the column vertical stiffening plate,
Web connection steel plates are tightly attached to two sides of a web joint of the node area beam section and the site connection beam section, and the web connection steel plates on two sides are bolted and/or riveted through steel connectors.
And flange connection steel plates are tightly adhered to the outer sides of the joint seams of the upper flange plate and the lower flange plate of the joint area beam section and the site connection beam section, and are bolted with the corresponding flange plates through steel connectors at four corners.
Grooves are cut at the joint of the node area beam section and the upper and lower flange plates of the field connection beam section, and the node area beam section is welded with the upper and lower flange plates of the field connection beam section through welding seams.
Another structural system of the high-shock-resistance welding-free steel tube concrete column also comprises a floor slab and a side force-resistant wallboard,
The floor is bolted with the beam rigid bone of the beam body through a steel connecting piece, the beam body and/or the column body are fixedly connected with the side force resisting wallboard through a steel connecting piece, wherein the steel connecting piece is welded on the beam body or the column body, the side force resisting wallboard is fixedly connected with the steel connecting piece, and the fixed connection is bolted, welded or riveted.
The structural system of the high-seismic welding-free steel tube concrete column is characterized in that the joint of the beam body and the column body is fixedly connected with the support and/or the energy dissipation support through a gusset plate.
A construction method of a high-anti-seismic welding-free steel pipe concrete column comprises the following steps,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
step two, cutting the steel plate to manufacture an annular connecting plate and a pipe joint stiffening plate, and welding the annular connecting plate and the pipe joint stiffening plate on the steel pipe to form an external steel pipe;
Welding the annular connecting plate and the pipe joint stiffening plate at corresponding positions on the external steel pipe;
step four, manufacturing local reinforcing ribs at the connecting ends;
step five, fixedly connecting the local reinforcing ribs at the connecting end with the steel pipe into a whole;
Step six, hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes, and connecting the outer steel pipes of the upper pipe joint and the lower pipe joint into a whole through a connecting piece;
And seventh, pouring concrete filled steel tube in the outer steel tube and curing to reach preset strength.
The construction method of the high-seismic welding-free concrete filled steel tube column comprises the following steps,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
step two, cutting the steel plate to manufacture an annular connecting plate and a pipe joint stiffening plate, and welding the annular connecting plate and the pipe joint stiffening plate on the steel pipe to form an external steel pipe;
Welding the annular connecting plate and the pipe joint stiffening plate at corresponding positions on the external steel pipe;
step four, manufacturing a continuous reinforcement cage and a local encryption reinforcement;
step five, fixedly connecting the continuous reinforcement cage and the local encryption ribs with the steel pipes into a whole;
Step six, hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes, and connecting the outer steel pipes of the upper pipe joint and the lower pipe joint into a whole through a connecting piece;
And seventh, pouring concrete filled steel tube in the outer steel tube and curing to reach preset strength.
And moving the fourth step and the fifth step to the sixth step and then to the seventh step.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
The high-seismic welding-free steel pipe concrete column adopts a full-bolting connection mode, is free of welding construction, can ensure construction quality and mechanical properties of the connection parts in winter and alpine regions, and ensures all-weather construction.
The high-seismic welding-free steel pipe concrete column has high site construction speed, the horizontal shearing resistance of the joint of the steel pipe concrete column connected by the bolts is far smaller than the shearing resistance bearing capacity of the non-joint, and the high-seismic welding-free steel pipe concrete column is reinforced in the joint area, so that the shearing resistance and bending resistance safety of the vertical connection can be effectively ensured.
The high-seismic welding-free concrete filled steel tube column adopts the locally reinforced concrete column, and the locally reinforced concrete column and the bolts or rivets at the joint are jointly sheared, so that the shearing bearing capacity under the stretch bending effect is effectively improved, a combined section is formed at the joint, and the bending bearing capacity at the joint is further improved.
The local reinforcing steel bar cage is a discontinuous steel bar cage, and the local reinforcing column is a steel tube reinforced concrete column, so that the construction is easy to implement.
The invention can be additionally provided with local reinforced steel ribs, and the local reinforced column becomes a steel tube steel rib reinforced concrete column. After the steel bones are added, the shearing resistance and the bending resistance bearing capacity of the connecting nodes are higher, and the requirements of higher-strength nodes can be met.
When two unit pipe joints of the column body which are adjacent up and down and are in butt joint, continuous reinforcement cages are arranged in the upper pipe joint and the lower pipe joint in a through length mode to form a through length steel pipe reinforced concrete column, and fire resistance, earthquake resistance and ductility of the column can be improved. The local reinforcement of the connecting end can realize the strong node connection of the steel tube reinforced concrete column.
The connection mode of the structural system is a non-welding full-bolting structure under a frame structure, the non-welding full-bolting structure has the advantages that the non-welding full-bolting structure is renewable, a steel pipe concrete structural system with a side force member is formed after the side force resisting wallboard is additionally arranged, the frame displacement is reduced, the repair can be completed only by replacing a damaged steel plate shear wall or an energy consumption support after a major earthquake or a huge earthquake, meanwhile, the non-welding full-bolting structure has the characteristic of good fireproof performance, the fire resistance of the steel pipe reinforced concrete column is far superior to that of a common steel structure, and good conditions are provided for people to escape in a fire disaster.
The structure system of the invention is a full bolting structure, meets the aim of industrialization, can finish most of work by a prefabrication method, shortens the construction period, improves the construction quality, is green, energy-saving and environment-friendly, and can recycle steel materials.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a column according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of the partial reinforcement column of fig. 1.
Fig. 3 is a schematic cross-sectional view of the non-reinforced region of fig. 1.
Fig. 4 is a schematic structural diagram of a second column according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of the partial reinforcement column of fig. 4.
Fig. 6 is a schematic view of a three-column structure according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a four-column body according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of a five-column body according to an embodiment of the present invention.
FIG. 9 is a schematic diagram of a first embodiment of the architecture of the present invention.
FIG. 10 is a schematic diagram of a second embodiment of the architecture of the present invention.
Reference numerals: 1-external steel pipes, 2-steel pipe concrete, 3-annular connecting plates, 4-pipe joint stiffening plates, 5-connecting holes, 6-local reinforcing steel cages, 61-longitudinal ribs, 62-stirrups, 7-local reinforcing columns, 8-local reinforcing steel bones, 9-steel connectors, 10-node section beam sections, 11-site connection beam sections, 12-column horizontal stiffening plates, 13-column vertical stiffening plates, 14-beam web shear plates, 15-web connection steel plates, 16-flange connection steel plates, 17-continuous steel cages and 171-local encryption ribs.
Detailed Description
1-3, A high-seismic-resistance welding-free steel pipe concrete column comprises unit pipe joints, wherein each unit pipe joint comprises an external steel pipe 1, steel pipe concrete 2 poured inside the external steel pipe 1, a horizontal annular connecting plate 3, a vertical pipe joint stiffening plate 4 and a vertical connecting end local reinforcing rib.
The annular connecting plate 3 is fixedly connected to the end surface of the connecting end of the outer steel pipe 1, the annular inner diameter of the annular connecting plate 3 is smaller than or equal to the inner diameter of the section of the outer steel pipe 1, the annular outer diameter of the annular connecting plate 3 is larger than the outer diameter of the outer steel pipe 1, the part of the annular connecting plate 3 extending out of the outer surface of the outer steel pipe 1 is a bolting part, a group of connecting holes 5 are circumferentially spaced apart from the bolting part, a pipe section stiffening plate 4 is fixedly connected between the bolting part and the outer surface of the outer steel pipe 1 along the circumferential spacing, and the pipe section stiffening plate 4 is arranged at the position of the staggered connecting holes 5.
The local strengthening rib of link sets up the link in unit tube coupling one side core district, and the local strengthening rib of link passes annular connecting plate 3, partly buries in steel pipe concrete 2, and this department link forms one section local spliced pole 7, and the local strengthening rib of link stretches into steel pipe concrete 2 and is the strengthening rib connecting portion, and the local strengthening rib of link stretches out the overhanging portion for the strengthening rib of outside steel pipe 1 link.
The local reinforcing ribs of the connecting end comprise local reinforcing steel bar cages 6, the local reinforcing steel bar cages 6 comprise longitudinal ribs 61 and stirrups 62, and the stirrups 62 are horizontal stirrups and/or spiral stirrups.
The local reinforcement cage is a discontinuous reinforcement cage, and the local reinforcement column 7 is a steel tube reinforced concrete column.
Embodiment two referring to fig. 4-5, unlike embodiment one, the local reinforcing rib of the connection end further comprises at least one local reinforcing steel rib 8 arranged in the range of the local reinforcing steel reinforcement cage 6, and the local reinforcing column 7 is a steel tube steel rib reinforced concrete column. In this embodiment, the local reinforcing steel bar is i-steel.
The third embodiment is shown in fig. 6, and the high anti-seismic welding-free concrete filled steel tube column comprises a column body, wherein the column body comprises two unit pipe sections which are adjacent up and down and are in butt joint, the two unit pipe sections are respectively an upper pipe section and a lower pipe section, an annular connecting plate 3 of the upper pipe section is vertically aligned with an annular connecting plate 3 of the lower pipe section and is tightly propped up, and a connecting hole 5 of the upper pipe section is vertically aligned with a connecting hole 5 of the lower pipe section and is sequentially bolted and/or riveted through a steel connecting piece 9 penetrating through the two holes. Wherein the steel connection 9 may be a bolt or a rivet.
At the joint of the connecting ends of two pipe sections, the overhanging parts of the reinforcing ribs penetrate through the annular connecting plates 3 of the adjacent pipe sections and are buried into the concrete filled steel tube 2 at the connecting ends of the adjacent pipe sections, and local reinforcing columns 7 are formed at the connecting ends of the adjacent pipe sections together. Wherein the local reinforcement cage is a discontinuous reinforcement cage, and the local reinforcement column 7 is a steel tube reinforced concrete column.
Fourth embodiment referring to fig. 7, unlike the third embodiment, a local reinforcing steel bar 8 is further provided in the local reinforcing steel bar cage. The local reinforcing column 7 is a steel tube reinforced concrete column.
The construction method of the high-seismic welding-free concrete filled steel tubular column comprises the following steps,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
Step two, manufacturing an annular connecting plate 3 and a pipe joint stiffening plate 4 by cutting a steel plate, and welding the annular connecting plate and the pipe joint stiffening plate on a steel pipe to form an external steel pipe 1;
Step three, welding the annular connecting plate 3 and the pipe joint stiffening plate 4 at corresponding positions on the external steel pipe 1;
step four, manufacturing local reinforcing ribs at the connecting ends;
Step five, fixedly connecting the local reinforcing ribs at the connecting end with the external steel pipe 1 into a whole;
Step six, hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes 5, and connecting the upper pipe joint and the outer steel pipe 1 of the lower pipe joint into a whole through a connecting piece;
And seventh, pouring steel pipe concrete 2 in the outer steel pipe 1 and curing to the preset strength.
The fifth embodiment is shown in fig. 8, and the high anti-seismic welding-free concrete filled steel tube column comprises a column body, wherein the column body comprises two unit pipe sections which are adjacent up and down and are in butt joint, the two unit pipe sections are respectively an upper pipe section and a lower pipe section, an annular connecting plate 3 of the upper pipe section is aligned up and down and is tightly propped against an annular connecting plate 3 of the lower pipe section, a connecting hole 5 of the upper pipe section is aligned up and down with a connecting hole 5 of the lower pipe section, and the upper pipe section and the lower pipe section are sequentially bolted and/or riveted through a steel connecting piece 9 penetrating through the two holes; continuous reinforcement cages 17 are arranged in the upper pipe joint and the lower pipe joint in a full length mode to form a full-length steel pipe reinforced concrete column, and the local reinforcing ribs at the connecting ends are local encryption ribs 63 in the continuous reinforcement cages respectively at the connecting positions of the connecting ends of the two pipe joints.
The measures of the local encryption rib 171 are two or more modes of horizontal stirrup interval encryption, increase of the number of stirrup limbs, increase of the stirrup diameter, addition of local spiral stirrups, addition of local longitudinal ribs, addition of local horizontal stirrups or addition of local reinforced steel bones. In this embodiment, the combination of horizontal stirrup spacing encryption and increased number of stirrup limbs is used.
The construction method of the high-seismic welding-free concrete filled steel tubular column comprises the following steps,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
Step two, manufacturing an annular connecting plate 3 and a pipe joint stiffening plate 4 by cutting a steel plate, and welding the annular connecting plate and the pipe joint stiffening plate on a steel pipe to form an external steel pipe 1;
Step three, welding the annular connecting plate 3 and the pipe joint stiffening plate 4 at corresponding positions on the external steel pipe 1;
step four, manufacturing a continuous reinforcement cage 17 and local encryption ribs;
Step five, fixedly connecting the continuous reinforcement cage and the local encryption ribs with an external steel pipe into a whole;
Step six, hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes 5, and connecting the upper pipe joint and the outer steel pipe 1 of the lower pipe joint into a whole through a connecting piece;
And seventh, pouring steel pipe concrete 2 in the outer steel pipe 1 and curing to the preset strength.
And moving the fourth step and the fifth step to the sixth step and then to the seventh step.
Embodiment referring to fig. 9, a structural system including a high-seismic-resistance welding-free concrete filled steel tubular column further includes a frame structure formed by a beam body fixedly connected with a column body at a beam column connection node area of the column body, the beam column connection node area avoids a connection end connection position of two pipe joints, the beam body includes a node area beam section 10 directly connected with the column body and a site connection beam section 11, the node area beam section 10 has the same size and form as the site connection beam section 11, and the beam body includes a beam steel rib.
The inner wall of the external steel pipe 1 is fixedly connected with a column horizontal stiffening plate 12, a column vertical stiffening plate 13 and a beam web shear plate 14 at positions corresponding to the beam steel bones, the column horizontal stiffening plate 12 is an annular plate, a core area is provided with flowing holes for concrete to flow, the column horizontal stiffening plate 12 is provided with two or more than two paths of holes, the upper flange plate 111 and the lower flange plate 112 of the beam steel bones are respectively aligned, the column vertical stiffening plate 13 is arranged and fixedly connected along the circumferential interval between the upper column horizontal stiffening plate 12 and the lower column horizontal stiffening plate 12, the beam web shear plate 14 is also arranged between the upper column horizontal stiffening plate 12 and the lower column horizontal stiffening plate 12, and the connection mode is the same as that of the column horizontal stiffening plate 13 and aligned or not aligned with the web 113 of the beam steel bones.
Web connecting steel plates 15 are tightly adhered to two sides of the joint seam of the node area beam section 10 and the web of the site connecting beam section 11, and the web connecting steel plates on the two sides are bolted and/or riveted through steel connectors 9. The outer sides of the joint seams of the node area beam section 10 and the upper and lower flange plates of the site connecting beam section 11 are also tightly attached with flange connecting steel plates 16, and the flange connecting steel plates 16 and the corresponding flange plates are bolted through steel connecting pieces 9 at four corners.
In the second embodiment, as shown in fig. 10, unlike in the first embodiment, grooves are cut at the joints of the upper and lower flanges of the node area beam section 10 and the field connection beam section 11, and the node area beam section 10 is welded to the upper and lower flanges of the field connection beam section 11 by welding. At this time, only a frame welded by the transverse beam can be formed, and the construction difficulty of connecting the steel beams later can be reduced.
The beam body is a steel beam, a steel reinforced concrete beam or a variable-rigidity steel reinforced concrete beam.
The utility model provides a high antidetonation exempts from to weld steel core concrete column's structure system still includes basis, floor and anti side force wallboard, the girder rigid frame of the floor and the roof beam body passes through steel connecting piece bolt, the roof beam body and/or cylinder pass through steel connecting piece and anti side force wallboard fixed connection, wherein steel connecting piece welds on the roof beam body or cylinder, anti side force wallboard and steel connecting piece fixed connection, fixed connection is bolt, welding or riveting.
The side force resisting wallboard can be a steel plate, an out-of-plane constraint steel plate shear wall wallboard, a reinforced concrete prefabricated wallboard or a steel plate reinforced concrete prefabricated wallboard, the steel plate of the wallboard can be provided with stiffening ribs or can be provided with no stiffening ribs, and the steel plate can be provided with holes or seams. The floor slab is a precast reinforced concrete floor slab, or a reinforced truss floor slab, or a profiled steel sheet cast-in-situ reinforced concrete floor slab. The foundation is a reinforced concrete foundation, and the reinforced concrete foundation is an independent foundation, a raft foundation, a beam foundation and a box foundation.
The structural system of the high-seismic welding-free steel tube concrete column is characterized in that the joint of the beam body and the column body is fixedly connected with the support and/or the energy dissipation support through a gusset plate.
The concrete-filled steel tube and the floor slab concrete related to the invention can be ordinary concrete, recycled concrete or high fly ash concrete. The connection between the steel bars of the steel tube reinforced concrete column can be lap joint, welding and mechanical connection. The steel pipe can be internally provided with a peg. The steel connection 9 may be a bolt or a rivet.
Claims (12)
1. The utility model provides a structural system including high antidetonation exempts from to weld steel core concrete column which characterized in that: the high-seismic welding-free steel pipe concrete column comprises a unit pipe joint, wherein the unit pipe joint comprises an external steel pipe (1), steel pipe concrete (2) poured inside the external steel pipe (1), a horizontal annular connecting plate (3), a vertical pipe joint stiffening plate (4) and a vertical connecting end local reinforcing rib,
The annular connecting plate (3) is fixedly connected to the end surface of the connecting end of the outer steel pipe (1), the annular inner diameter of the annular connecting plate (3) is smaller than or equal to the inner diameter of a section of the outer steel pipe (1), the annular outer diameter of the annular connecting plate (3) is larger than the outer diameter of the outer steel pipe (1), the part, extending out of the outer surface of the outer steel pipe (1), of the annular connecting plate (3) is a bolting part, a group of connecting holes (5) are formed in the bolting part at intervals along the circumferential direction, a pipe joint stiffening plate (4) is fixedly connected between the bolting part and the outer surface of the outer steel pipe (1) along the circumferential direction at intervals, and the pipe joint stiffening plate (4) is arranged at the positions of the staggered connecting holes (5);
The local reinforcing rib of the connecting end is arranged at the connecting end of the core area at one side of the unit pipe joint, the local reinforcing rib of the connecting end penetrates through the annular connecting plate (3) and is partially embedded into the steel pipe concrete (2), a section of local reinforcing column (7) is formed at the connecting end, the part of the local reinforcing rib of the connecting end, which extends into the steel pipe concrete (2), is a reinforcing rib connecting part, the part of the local reinforcing rib of the connecting end, which extends out of the connecting end of the external steel pipe (1), is a reinforcing rib overhanging part,
The local reinforcing ribs at the connecting ends comprise local reinforcing steel bar cages (6), the local reinforcing steel bar cages (6) comprise longitudinal ribs (61) and stirrups (62), and the stirrups (62) are horizontal stirrups and/or spiral stirrups;
comprises a column body, wherein the column body comprises two unit pipe sections which are adjacent up and down and are in butt joint, an upper pipe section and a lower pipe section are respectively arranged,
The annular connecting plate (3) of the upper pipe joint is aligned up and down and tightly propped against the annular connecting plate (3) of the lower pipe joint, and the connecting hole (5) of the upper pipe joint is aligned up and down with the connecting hole (5) of the lower pipe joint and sequentially bolted and/or riveted through the steel connecting piece (9) penetrating through the two holes; the connecting part of the connecting ends of the two pipe sections is characterized in that the extending part of the reinforcing rib penetrates through the annular connecting plate (3) of the adjacent pipe section and is embedded into the steel pipe concrete (2) of the connecting end of the adjacent pipe section, and a section of local reinforcing column (7) is formed at the connecting end of the adjacent pipe section;
the beam body comprises a node area beam section (10) and a site connection beam section (11) which are directly connected with the column body; the size and the form of the node area beam section (10) are the same as those of the site connection beam section (11), and the beam body comprises a beam steel rib;
The inner wall of the external steel pipe (1) is fixedly connected with a column horizontal stiffening plate (12), a column vertical stiffening plate (13) and a beam web shear plate (14) at the position corresponding to the beam steel bone; the horizontal stiffening plates (12) of the column are annular plates, the core area of the horizontal stiffening plates (12) of the column is provided with flowing holes for concrete to flow, more than two horizontal stiffening plates (12) of the column are arranged together, the upper flange plates (111) and the lower flange plates (112) of the girder steel bones are aligned respectively, the vertical stiffening plates (13) of the column are arranged and fixedly connected along the circumferential interval between the upper horizontal stiffening plates (12) of the column and the lower horizontal stiffening plates (12), the shear plates (14) of the girder web are also arranged between the upper horizontal stiffening plates (12) of the column and the lower horizontal stiffening plates of the column, the connection mode of the shear plates is the same as that of the vertical stiffening plates (13) of the column, web connecting steel plates (15) are tightly attached to two sides of a web joint of a girder section (10) of the node area, and web connecting steel plates on two sides are bolted and/or riveted through steel connectors (9).
2. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 1, wherein: the local reinforcement cage is a discontinuous reinforcement cage, and the local reinforcement column (7) is a steel tube reinforced concrete column.
3. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 2, wherein: the local strengthening rib of link still includes at least one local reinforcing steel rib (8) that set up in local reinforcing steel reinforcement cage (6) scope, and local reinforcing column (7) are steel pipe steel reinforced concrete column.
4. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 1, wherein: continuous reinforcement cages (17) are arranged in the upper pipe joint and the lower pipe joint in a through length mode to form a through-length steel pipe reinforced concrete column, and local reinforcing ribs at the connecting end are local encryption ribs (171) in the continuous reinforcement cages; the local encryption rib (171) is positioned at the joint of the connecting ends of the two pipe sections.
5. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 4, wherein: the implementation measures of the local encryption rib (171) are that the horizontal stirrup interval encryption, the number of stirrup limbs is increased, the diameter of the stirrup is increased, the local spiral stirrup is added, the local longitudinal stirrup is added, the local horizontal stirrup is added or the combination of more than two modes in the local reinforced steel rib is added.
6. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 1, wherein: the outer sides of the joint seam between the node area beam section (10) and the upper and lower flange plates of the site connection beam section (11) are tightly adhered with flange connection steel plates (16), and the flange connection steel plates (16) and the corresponding flange plates are bolted and/or riveted through steel connectors (9) at four corners.
7. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 1, wherein: grooves are cut at the joint of the node area beam section (10) and the upper and lower flange plates of the field connection beam section (11), and the node area beam section (10) is connected with the upper and lower flange plates of the field connection beam section (11) through welding seams.
8. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to any one of claims 1 to 7, wherein: also comprises a floor slab and a side force resisting wallboard,
The floor is bolted with the beam rigid bone of the beam body through a steel connecting piece, the beam body and/or the column body are fixedly connected with the side force resisting wallboard through a steel connecting piece, wherein the steel connecting piece is welded on the beam body or the column body, the side force resisting wallboard is fixedly connected with the steel connecting piece, and the fixed connection is bolted, welded or riveted.
9. A structural system comprising a high vibration resistant weld free concrete filled steel tubular column according to claim 8, wherein:
the joint of the beam body and the column body is fixedly connected with the support through a gusset plate.
10. A construction method of a high-seismic welding-free concrete filled steel tubular column in a structural system according to claim 1, comprising the steps of,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
step two, manufacturing an annular connecting plate (3) and a pipe joint stiffening plate (4) by cutting a steel plate, and welding the annular connecting plate and the pipe joint stiffening plate at corresponding positions on the steel pipe to form an external steel pipe (1);
Step three, manufacturing local reinforcing ribs at the connecting ends;
Step four, fixedly connecting local reinforcing ribs at the connecting end with an external steel pipe (1) into a whole;
Hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes (5), and connecting the upper pipe joint and the outer steel pipe (1) of the lower pipe joint into a whole through a connecting piece;
And step six, pouring steel tube concrete (2) in the outer steel tube (1) and curing to preset strength.
11. A method for constructing a high vibration-resistant welding-free concrete filled steel tubular column in a structural system according to claim 4 or 5, comprising the steps of,
Step one, selecting a steel pipe and a steel plate according to the size of a column body; the steel pipe is a cold-formed steel pipe or a welded steel pipe, and when the welded steel pipe is selected, a wire cutting steel plate is firstly put, and then the steel pipe is welded into the steel pipe;
Step two, manufacturing an annular connecting plate (3) and a pipe joint stiffening plate (4) by cutting a steel plate, and welding the annular connecting plate and the pipe joint stiffening plate at corresponding positions on the steel pipe to form an external steel pipe (1);
step three, manufacturing a continuous reinforcement cage (17) and a local encryption reinforcement;
step four, fixedly connecting the continuous reinforcement cage and the local encryption ribs with an external steel pipe into a whole;
Hoisting the lower pipe joint in place, hoisting the upper pipe joint to the upper side of the lower pipe joint, aligning the connecting holes (5), and connecting the upper pipe joint and the outer steel pipe (1) of the lower pipe joint into a whole through a connecting piece;
And step six, pouring steel tube concrete (2) in the outer steel tube (1) and curing to preset strength.
12. The construction method according to claim 11, wherein: and the third step and the fourth step are moved to the fifth step and then the sixth step.
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| CN112922234A (en) * | 2021-01-27 | 2021-06-08 | 海南大学 | Equivalent steel reinforced concrete prefabricated column and construction method thereof |
| CN113445627A (en) * | 2021-06-23 | 2021-09-28 | 北京建筑大学 | Steel pipe concrete assembly and column structure |
| CN113982109A (en) * | 2021-12-29 | 2022-01-28 | 中铁建设集团有限公司 | Unequal-strength beam column joint based on steel plate hoop constrained concrete superposed short column |
| CN114517560B (en) * | 2022-03-17 | 2023-09-26 | 上海宝冶冶金工程有限公司 | Method for installing reinforced steel rib for structural column |
| CN115288364B (en) * | 2022-07-04 | 2023-08-22 | 华南理工大学 | Concrete filled steel tube column with local Gao Jiangle and built-in stirrups and construction method thereof |
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