CN110512739B - Steel-concrete-FRP combined structure and construction method thereof - Google Patents
Steel-concrete-FRP combined structure and construction method thereof Download PDFInfo
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- CN110512739B CN110512739B CN201910936386.XA CN201910936386A CN110512739B CN 110512739 B CN110512739 B CN 110512739B CN 201910936386 A CN201910936386 A CN 201910936386A CN 110512739 B CN110512739 B CN 110512739B
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 321
- 239000010959 steel Substances 0.000 claims abstract description 321
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims description 96
- 238000012946 outsourcing Methods 0.000 claims description 22
- 238000004873 anchoring Methods 0.000 claims description 18
- 239000011440 grout Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 5
- 239000011376 self-consolidating concrete Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—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
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention provides a steel-concrete-FRP combined structure and a construction method thereof, wherein the steel-concrete-FRP combined structure comprises an I-shaped steel column, a pair of inner side steel beams and a pair of outer side steel beams are circumferentially fixed on the I-shaped steel column, a pair of roof outer steel beams are fixed on the upper parts of the inner side steel beams and the outer side steel beams, the roof outer steel beams are oppositely arranged, the tops and the sides of the roof outer steel beams are fixed on flange plates and webs of the inner side steel beams or the outer side steel beams, FRP cloth is adhered to the lower surfaces of the outer side steel beams and the flange plates at the lower part of the inner side steel beams.
Description
Technical Field
The invention relates to a steel-concrete-FRP composite structure and a construction method thereof.
Background
The steel structure has high strength, light weight and good anti-seismic performance, and is widely used in high-rise, large-span and heavy-load building structures and also widely used in bridge structures. However, the steel structure also has the following disadvantages: 1) Because the steel is directly exposed in the air, the cost of rust prevention and fire prevention is high, and once the steel is damaged, the reinforcement cost is also high; 2) The rigidity of the steel structure is low, and a larger second-order bending moment is easy to generate under the action of transverse load, so that the overall stability of the steel structure is poor; 3) The steel structural members are all formed by combining steel plates, the local stability of the steel plates is poor, and compared with the solid members, the steel structural members are easier to locally flex.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is that the existing steel structure has poor rigidity, large steel consumption and high rust and fire prevention cost.
The specific embodiments of the invention are: the utility model provides a steel-concrete-FRP integrated configuration, includes the I-steel post of vertical setting, the I-steel post is fixed with a pair of inboard girder steel and a pair of outside girder steel along circumference, the inboard end and the web of I-steel post of inboard girder steel are connected, the inboard end and the flange plate of I-steel post of outside girder steel are connected, inboard girder steel and outside girder steel are the I-steel, and the upper portion of each inboard girder steel and outside girder steel is fixed with a pair of roof beam outer cover angle steel, roof beam outer cover angle steel sets up in opposite directions and roof beam outer cover angle steel's top and lateral part are fixed in flange plate and the web of inboard girder steel or outside girder steel, and roof beam outer cover angle steel forms first pouring chamber with flange plate and the web of inboard girder steel or outside girder steel, roof beam outer cover angle steel has the first concrete grouting hole and the concrete grout outlet of intercommunication first pouring chamber, the flange lower surface adhesion of outside girder steel and inboard girder steel lower part has FRP cloth.
Further, the inner steel beam and the outer steel beam are vertically arranged, and the outer steel beam is equal in height to the upper end face and the lower end face of the inner steel beam.
Further, beam column node area outsourcing angle steel buckled in I-shaped steel column four corners is fixed with between adjacent outside girder steel and the inboard girder steel, the outside end of beam column node area outsourcing angle steel is fixed in the web of adjacent outside girder steel and inboard girder steel, the top and the bottom of beam column node area outsourcing angle steel are sealed to be fixed in outside girder steel and its upper portion of inboard girder steel and lower part flange plate, the upper portion and the lower part flange plate of I-shaped steel column, beam column node area outsourcing angle steel and outside girder steel and inboard girder steel, outside girder steel and the web of inboard girder steel constitute confined second and pour the chamber, the upper portion flange plate of outside girder steel and inboard girder steel, the flange plate that inboard girder steel is located upper portion has the concrete pouring hole that the second was pour the chamber.
Further, the below of each inboard girder steel and outside girder steel is fixed with the channel-section steel of buckling in the flange board both sides of I-steel post, the upper end of channel-section steel is buckled and is had the anchor steel sheet that the level set up, anchor steel sheet and the lower terminal surface fixed connection of inboard girder steel and outside girder steel lower flange board, the both sides portion of channel-section steel has the knot limit that extends to I-steel post direction, detain limit and the flange board fixed connection of I-steel post, I-steel post and channel-section steel enclose and close and form the third and pour the chamber, the flange board that inboard girder steel and outside girder steel are located the lower part has the concrete grouting intercommunicating pore that the chamber was pour in UNICOM, the concrete grouting intercommunicating pore makes the second pour the chamber and pour the chamber with the third, the lower part of channel-section steel has the second concrete grouting hole that the chamber was pour to the intercommunication third.
Further, the anchoring steel plate is fixedly connected with the inner steel beam and the outer steel beam through bolts.
Further, the end part of the FRP cloth is positioned between the anchoring steel plate and the flange plate of the lower part of the inner side steel beam and the outer side steel beam.
Further, the first concrete grouting holes and the concrete grout outlet holes are respectively formed in two ends of the beam top outer wrapping angle steel, and the concrete grout outlet holes are formed in the upper portions of the first concrete grouting holes.
Further, light concrete is poured into the first pouring cavity, and self-compacting concrete is poured into the second pouring cavity and the third pouring cavity.
The invention also comprises a construction method for realizing the steel-concrete-FRP composite structure, which specifically comprises the following steps:
1) Fixedly connecting an inner steel beam and an outer steel beam on the periphery of the I-shaped steel column;
2) FRP cloth anchoring bolt holes are respectively formed in the lower flange plates of the inner steel beam and the outer steel beam and are used for connecting anchoring steel plates at the top of the channel steel; concrete pouring holes are respectively formed in the upper flange plate and the lower flange plate of the inner side steel beam;
3) Welding four beam column node areas on the periphery of the I-shaped steel column, and wrapping angle steel outside the beam column node areas to form a closed cavity beam column node; welding two beam top outsourcing angle steels below the upper flanges of the inner steel beam and the outer steel beam to form a double-cavity rectangular steel pipe;
4) Bonding FRP cloth at the bottoms of the inner steel beam and the outer steel beam; a concrete grouting hole is formed in the lower part of the channel steel, and the concrete grouting hole is welded on two sides of the I-shaped steel column; installing FRP anchor bolts;
5) Pouring self-compaction concrete at the second concrete grouting hole by using a jacking method until the concrete is filled in the column cavity and overflows from the concrete pouring hole, so as to form a double-cavity steel tube concrete column and steel-concrete combined node;
6) Pouring light concrete at a first concrete grouting hole at one end of the steel angle of the outer wrapping beam top by a jacking method until the light concrete overflows from a concrete grout outlet at the other end, so that double-cavity steel pipe concrete is formed at the tops of the inner steel beam and the outer steel beam;
7) After the construction of the layer of combined structure is completed, the construction of the next layer of combined structure can be completed by repeating the steps.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, concrete is poured into the first pouring cavity formed by the steel angle outside the roof of the beam and the inner steel beam or the outer steel beam, and the bearing capacity, the rigidity and the fire resistance of the composite beam are greatly improved by adding FRP cloth. In the embodiment, the anchoring steel plate at the top of the channel steel can play a role in anchoring FRP cloth, reinforcing a compression zone at the bottom of the beam end and reinforcing the connection strength of the beam column. Simultaneously, the compression resistance, bending resistance and shearing resistance bearing capacity of the column and the beam-column joint can be greatly improved by pouring concrete in the second pouring cavity and the third pouring cavity. In addition, in the embodiment, two channel steel with an anchoring steel plate at the top is fixed outside the I-shaped steel column, and self-compaction concrete is poured in the double-cavity steel pipe column to form a double-cavity steel pipe concrete column, so that the bearing capacity of the column and the beam-column joint is improved. The FRP cloth at the bottom of the beam can be anchored by utilizing the anchoring steel plate with the channel steel, and the bearing capacity of the node can be improved.
Drawings
FIG. 1 is a schematic view of a steel structural frame of the present invention.
Fig. 2 is a schematic view of the structure of the i-beam column, the outer steel beam and the inner steel beam according to the present invention.
FIG. 3 is an exploded view of the assembly of the present invention.
Fig. 4 is a schematic view showing an assembled state structure of the present invention.
The reference numerals in the figures illustrate: 1-I-shaped steel column, 2-inner side steel beam, 3-outer side steel beam, 4-concrete pouring hole, 41-concrete grouting communication hole, 5-FRP cloth anchor bolt hole, 6-beam column node area outsourcing angle steel, 7-beam top outsourcing angle steel, 8-FRP cloth, 9-channel steel, 91-anchor steel plate, 92 fastening edge, 93-second concrete pouring hole, 10-FRP cloth anchor bolt, 11-first concrete pouring hole, 12-concrete grout outlet hole.
Description of the embodiments
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 4, a steel-concrete-FRP composite structure includes a vertically arranged i-beam column 1, wherein a pair of inner side steel beams 2 and a pair of outer side steel beams 3 are fixed to the i-beam column along the circumferential direction, the inner side ends of the inner side steel beams are connected with webs of the i-beam column, the inner side ends of the outer side steel beams are connected with flange plates of the i-beam column, in this embodiment, the inner side steel beams and the outer side steel beams are vertically arranged, and the outer side steel beams are equal in height with the upper end surfaces and the lower end surfaces of the inner side steel beams.
The upper portion of each inboard girder steel and outside girder steel is fixed with a pair of roof beam outsourcing angle steel 7, roof beam top outsourcing angle steel 7 sets up in opposite directions and roof beam top outsourcing angle steel's top and lateral part are fixed in flange plate and the web of inboard girder steel or outside girder steel, and roof beam top outsourcing angle steel 7 forms first pouring chamber with flange plate and the web of inboard girder steel or outside girder steel, roof beam top outsourcing angle steel has the first concrete grouting hole 11 and the concrete grout outlet 12 of the first pouring chamber of intercommunication, the flange plate lower surface adhesion that is located the lower part of outside girder steel and inboard girder steel has FRP cloth 8.
The FRP cloth is the fiber reinforced composite cloth.
The first concrete grouting holes and the concrete grout outlet holes are respectively arranged at two ends of the top-wrapping angle steel, and the concrete grout outlet holes are arranged at the upper parts of the first concrete grouting holes. Pouring light concrete at a first concrete grouting hole 11 at one end of the beam top outer-cover angle steel 7 by a jacking method until the light concrete overflows from a concrete grout outlet hole 12 at the other end, so that double-cavity steel pipe concrete is formed at the tops of the inner steel beam 2 and the outer steel beam 3; by pouring light concrete into the first concrete pouring holes 11 during construction, the bearing capacity, rigidity and fire resistance of the beam are greatly improved.
In this embodiment, be fixed with between adjacent outside girder steel 3 and the inboard girder steel 2 detain in the beam column node district outsourcing angle steel 6 in I-steel column 1 four corners, the outside end of beam column node district outsourcing angle steel is fixed in the web of adjacent outside girder steel and inboard girder steel, the top and the bottom of beam column node district outsourcing angle steel are sealed and are fixed in outside girder steel 3 and inboard girder steel 2 its upper portion and lower part flange plate, I-steel column 1, beam column node district outsourcing angle steel 6 and outside girder steel 3 and the upper portion and the lower part flange plate of inboard girder steel 2, outside girder steel and the web of inboard girder steel constitute confined second and pour the chamber, the flange plate that inboard girder steel is located the upper portion has the concrete pouring hole 4 that the second of intercommunication was pour the chamber.
In this embodiment, the below of each inboard girder steel 2 and outside girder steel 3 is fixed with the channel-section steel 9 of buckling in its flange board both sides of I-steel post, the upper end of channel-section steel is buckled and is had the anchor steel sheet 91 of level setting, anchor steel sheet and the lower terminal surface fixed connection of inboard girder steel and outside girder steel lower flange board, the both sides portion of channel-section steel has the knot limit 92 that extends to I-steel post direction, detain limit and I-steel post's flange board fixed connection, detain the limit has guaranteed I-steel post 1 and channel-section steel 9 enclose and form the third and pour the chamber, the flange board that inboard girder steel and outside girder steel are located the lower part has the concrete grouting communication hole 41 of intercommunication third and pours the chamber and communicate with the third, the second concrete grouting communication hole 93 of lower part of channel-section steel.
During construction, self-compaction concrete is poured at the second concrete grouting holes 93 by a jacking method until the column cavity is filled with the concrete and overflows from the concrete pouring holes 4 of the second pouring cavity, so that a double-cavity steel tube concrete column and a steel-concrete combined node is formed.
The flange plates at the lower parts of the inner steel beam and the outer steel beam are provided with FRP cloth anchoring bolt holes 5, the anchoring steel plate 91 is fixed through FRP cloth anchoring bolts penetrating through the FRP cloth anchoring bolt holes 5, and the FRP cloth is fixed between the anchoring steel plate and the flange plates at the lower parts of the inner steel beam and the outer steel beam. The first pouring cavity is filled with light concrete, and the second pouring cavity and the third pouring cavity are filled with self-compacting concrete.
The concrete construction method comprises the following steps:
the construction method comprises the following steps:
1) An inner steel beam 2 and an outer steel beam 3 are fixedly connected to the periphery of the I-shaped steel column 1;
2) FRP cloth anchor bolt holes 5 are respectively formed in the lower flange plates of the inner steel beam 2 and the outer steel beam 3 and are used for connecting an anchor steel plate 91 at the top of the channel steel; the upper and lower flange plates of the inner steel beam 2 are respectively provided with a concrete pouring hole 4 and a concrete communicating hole 41; welding four beam column node areas around the I-shaped steel column, and wrapping angle steel 6 outside the beam column node areas to form a closed cavity beam column node;
3) Two beam top outsourcing angle steels 7 are welded below the upper flanges of the inner steel beam 2 and the outer steel beam 3 to form a double-cavity rectangular steel pipe;
4) The FRP cloth 8 is adhered to the bottoms of the inner steel beam 2 and the outer steel beam 3; a second concrete grouting hole 93 is formed in the lower part of the channel steel 9 and welded on two sides of the I-shaped steel column 1; then installing FRP cloth anchoring bolts 10;
5) Pouring self-compaction concrete at the second concrete grouting holes 93 by using a jacking method until the column cavity is filled with concrete and overflows from the concrete pouring holes 4 to form a double-cavity steel tube concrete column and steel-concrete combined node;
6) Pouring light concrete at a first concrete grouting hole 11 at one end of the beam top outer-cover angle steel 7 by a jacking method until the light concrete overflows from a concrete grout outlet hole 12 at the other end, so that double-cavity steel pipe concrete is formed at the tops of the inner steel beam 2 and the outer steel beam 3;
7) After the construction of the layer of combined structure is completed, the construction of the next layer of combined structure can be completed by repeating the steps.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
Meanwhile, if the above invention discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (5)
1. The steel-concrete-FRP combined structure is characterized by comprising an I-shaped steel column which is vertically arranged, wherein a pair of inner side steel beams and a pair of outer side steel beams are fixed on the I-shaped steel column along the circumferential direction, the inner side ends of the inner side steel beams are connected with webs of the I-shaped steel column, the inner side ends of the outer side steel beams are connected with flange plates of the I-shaped steel column, the inner side steel beams and the outer side steel beams are I-shaped steel, a pair of beam top outer cover angle steels are fixed on the upper parts of the inner side steel beams and the outer side steel beams respectively, the top and the side parts of the beam top outer cover angle steels are fixed on flange plates and webs of the inner side steel beams or the outer side steel beams respectively, a first pouring cavity is formed by the beam top outer cover angle steels and the flange plates of the inner side steel beams or the outer side steel beams respectively, first concrete grouting holes and concrete grout outlet holes are formed in communication with the flange plates of the upper parts of the inner side steel beams and the outer side steel beams, and the flange plates of the inner side steel beams are adhered with FRP cloth;
the beam column node area outsourcing angle steels buckled at four corners of the I-shaped steel column are fixed between the adjacent outer side steel beam and the inner side steel beam, the outer side ends of the beam column node area outsourcing angle steels are fixed on webs of the adjacent outer side steel beam and inner side steel beam, the top and the bottom of the beam column node area outsourcing angle steels are fixed on upper and lower flange plates of the outer side steel beam and the inner side steel beam in a sealing manner, the I-shaped steel column, the beam column node area outsourcing angle steels, the upper and lower flange plates of the outer side steel beam and the inner side steel beam, the webs of the outer side steel beam and the inner side steel beam form a sealed second pouring cavity, and the flange plate of the inner side steel beam positioned at the upper part is provided with a concrete pouring hole communicated with the second pouring cavity;
the lower parts of the inner side steel beams and the outer side steel beams are fixedly provided with channel steel buckled on two sides of the flange plates of the I-shaped steel columns, the upper ends of the channel steel are bent with anchoring steel plates which are horizontally arranged, the anchoring steel plates are fixedly connected with the lower end surfaces of the lower flange plates of the inner side steel beams and the outer side steel beams, the two side parts of the channel steel are provided with buckling edges which extend towards the direction of the I-shaped steel columns, the buckling edges are fixedly connected with the flange plates of the I-shaped steel columns, the I-shaped steel columns and the channel steel are enclosed to form a third pouring cavity, the flange plates of the inner side steel beams and the outer side steel beams at the lower parts are provided with concrete grouting communication holes communicated with the third pouring cavity, and the lower parts of the channel steel are provided with second concrete grouting holes communicated with the third pouring cavity;
the first concrete grouting holes and the concrete grout outlet holes are respectively arranged at two ends of the outer-wrapping angle steel at the top of the beam, and the concrete grout outlet holes are arranged at the upper parts of the first concrete grouting holes;
the first pouring cavity is filled with light concrete, and the second pouring cavity and the third pouring cavity are filled with self-compacting concrete.
2. The steel-concrete-FRP composite structure of claim 1, characterized in that the inner steel beams and the outer steel beams are vertically arranged, and the outer steel beams are at the same height as the upper and lower end surfaces of the inner steel beams.
3. The steel-concrete-FRP composite structure of claim 2, characterized in that the anchor steel plate is fixedly connected to the inner steel beam and the outer steel beam via bolts.
4. A steel-concrete-FRP composite structure according to claim 3, characterized in that the ends of the FRP cloth are located between the anchor steel plate and the flange plates of the inner and outer steel beams at the lower part.
5. A construction method for realizing the steel-concrete-FRP composite structure of claim 4, comprising the steps of:
1) Fixedly connecting an inner steel beam and an outer steel beam on the periphery of the I-shaped steel column;
2) FRP cloth anchoring bolt holes are respectively formed in the lower flange plates of the inner steel beam and the outer steel beam and are used for connecting anchoring steel plates at the top of the channel steel; concrete pouring holes are respectively formed in the upper flange plate and the lower flange plate of the inner side steel beam;
3) Welding four beam column node areas on the periphery of the I-shaped steel column, and wrapping angle steel outside the beam column node areas to form a closed cavity beam column node; welding two beam top outsourcing angle steels below the upper flanges of the inner steel beam and the outer steel beam to form a double-cavity rectangular steel pipe;
4) Bonding FRP cloth at the bottoms of the inner steel beam and the outer steel beam; a concrete grouting hole is formed in the lower part of the channel steel, and the concrete grouting hole is welded on two sides of the I-shaped steel column; installing FRP anchor bolts;
5) Pouring self-compaction concrete at the second concrete grouting hole by using a jacking method until the concrete is filled in the column cavity and overflows from the concrete pouring hole, so as to form a double-cavity steel tube concrete column and steel-concrete combined node;
6) Pouring light concrete at a first concrete grouting hole at one end of the steel angle of the outer wrapping beam top by a jacking method until the light concrete overflows from a concrete grout outlet at the other end, so that double-cavity steel pipe concrete is formed at the tops of the inner steel beam and the outer steel beam;
7) After the construction of the layer of combined structure is completed, the construction of the next layer of combined structure can be completed by repeating the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910936386.XA CN110512739B (en) | 2019-09-29 | 2019-09-29 | Steel-concrete-FRP combined structure and construction method thereof |
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| CN201910936386.XA CN110512739B (en) | 2019-09-29 | 2019-09-29 | Steel-concrete-FRP combined structure and construction method thereof |
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| CN110512739A CN110512739A (en) | 2019-11-29 |
| CN110512739B true CN110512739B (en) | 2024-02-06 |
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| CN113431187B (en) * | 2021-06-28 | 2023-03-03 | 四川省佳宇建设集团有限公司 | Layered assembly type beam column node |
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| CN201372486Y (en) * | 2008-12-30 | 2009-12-30 | 上海勘测设计研究院 | Combination member for strengthening concrete frame |
| CN102747781A (en) * | 2012-07-31 | 2012-10-24 | 东北石油大学 | Fiber reinforce plastic (FRP) combination structure frame where integral type node is adopted and construction method thereof |
| JP2016098586A (en) * | 2014-11-23 | 2016-05-30 | 株式会社安藤・間 | Reinforced concrete column-steel beam joint member and manufacturing method thereof and building construction method |
| CN105507426A (en) * | 2015-11-30 | 2016-04-20 | 北方工业大学 | Half-through bracket haunching type compound steel pipe concrete column-steel beam joint |
| CN109457818A (en) * | 2018-12-19 | 2019-03-12 | 石家庄铁道大学 | A kind of assembled rectangular steel-tube concrete column-reinforced node of girder steel |
| CN211228890U (en) * | 2019-09-29 | 2020-08-11 | 福州大学 | Novel steel-concrete-FRP combined structure |
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| CN110512739A (en) | 2019-11-29 |
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