WO2011147194A1 - Poutre tubulaire combinée à paroi double de stratifié-verre-béton-acier et structure combinée poutre-plaque l'utilisant - Google Patents

Poutre tubulaire combinée à paroi double de stratifié-verre-béton-acier et structure combinée poutre-plaque l'utilisant Download PDF

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Publication number
WO2011147194A1
WO2011147194A1 PCT/CN2011/000880 CN2011000880W WO2011147194A1 WO 2011147194 A1 WO2011147194 A1 WO 2011147194A1 CN 2011000880 W CN2011000880 W CN 2011000880W WO 2011147194 A1 WO2011147194 A1 WO 2011147194A1
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WO
WIPO (PCT)
Prior art keywords
pipe
double
frp
concrete
steel inner
Prior art date
Application number
PCT/CN2011/000880
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English (en)
Chinese (zh)
Inventor
滕锦光
余涛
黄玉龙
Original Assignee
香港理工大学
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Application filed by 香港理工大学 filed Critical 香港理工大学
Publication of WO2011147194A1 publication Critical patent/WO2011147194A1/fr

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Classifications

    • 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
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/026—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of plastic
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/046—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed with distance from another
    • 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

Definitions

  • the present invention relates to a force member in a structure such as a bridge, a building, etc., and more particularly, to a
  • beam members commonly used in engineering structures such as bridges and buildings include Reinforced Concrete (RC) beams and steel beams. Both of these beam members are poor in corrosion resistance and are prone to corrosion and degradation in harsh environments such as the wild, coastal or wetlands.
  • RC Reinforced Concrete
  • FRP fiber-reinforced polymer
  • Various existing beam members using FRP include: (a) Full FRP beams (hereinafter referred to as Type I beams), which generally have a similar shape to steel beams (eg, I-shaped or box type). (b) composite beams of FRP and concrete, including FRP reinforced concrete beams, composite beams composed of tensioned FRP profiles and pressed concrete layers cast on them, and FRP pipe concrete beams (hereinafter referred to as Type II beam, Type III beam, and Type IV beam).
  • FRP is used as the main longitudinal force-bearing material, and the amount is usually large, which leads to high cost of the beam member.
  • the deformation of the beam member is often caused by insufficient rigidity of the member, and the bearing capacity becomes the control factor of the design.
  • the components are also less ductile due to the brittleness of the FRP material. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a novel FRP-concrete-steel double-wall composite pipe beam and a beam-plate composite combination using the composite pipe beam in view of the above-mentioned defects of the prior art. Structure.
  • a double-walled composite pipe beam which comprises an FRP outer pipe, a steel inner pipe, and concrete filled between the FRP outer pipe and the steel inner pipe, And a plurality of shear connectors are arranged on the consolidated concrete side of the steel inner tube to ensure that they work together with the concrete.
  • the plurality of shear connectors are distributed along the circumferential and longitudinal directions of the inner steel tube.
  • the inner steel tube is eccentrically disposed relative to the FRP outer tube toward the tension side of the composite tube beam.
  • the cross-sectional shape of the double-walled composite tube beam is a circular, square, rectangular or other suitable shape of an FRP outer tube and a circular, square, rectangular or other suitable shape of steel. Any combination between the inner tubes.
  • the double wall composite tube beam has the same cross-sectional shape along the length.
  • the inner steel tube is inclined with respect to the FRP outer tube in the longitudinal direction, near the lower portion of the beam cross section in the positive bending moment region, and near the upper portion of the beam cross section in the negative bending moment region.
  • the FRP outer tube can be fabricated by a winding forming process; the direction of the fibers in the FRP outer tube can be designed according to the structure requirements, and in most applications, the fibers are mainly arranged in the tube ring direction or Close to the ring.
  • the present invention also provides a beam-and-plate composite structure comprising a beam and a panel disposed thereon, the beam being a double-walled composite pipe beam, including an FRP outer pipe, a steel inner pipe, and a steel pipe filled in the FRP
  • the concrete between the inner tubes and the consolidated concrete side of the steel inner tube are provided with a plurality of shear connectors to ensure that they work together with the concrete.
  • the present invention further provides a beam-and-plate type composite structure, comprising a double-walled composite pipe beam and an FRP-reinforced concrete panel, wherein the upper portion of the double-walled composite pipe beam is integrated into the bottom layer of the FRP-reinforced concrete panel, wherein the
  • the double-walled composite pipe beam comprises an FRP outer pipe, a steel inner pipe, and concrete filled between the FRP outer pipe and the steel inner pipe, and the steel inner pipe is provided with a plurality of shear connectors on the consolidated concrete side To ensure that it works with concrete.
  • a reinforcing rib is embedded in an upper portion of the double-walled composite pipe beam, and the reinforcing rib penetrates the FRP outer pipe and is connected with the bottom FRP rib of the FRP reinforced concrete panel to connect the double wall Group
  • the pipe joint is integrated with the FRP reinforced concrete panel.
  • the present invention has the following advantageous effects:
  • the double wall composite pipe beam of the present invention has the greatest advantage in comparison with reinforced concrete beams and steel beams in that it has very good corrosion resistance.
  • the advantages of the double-walled composite tube beam of the present invention over the Type I to Type IV beams are: (1) This type of beam saves cost due to the use of less FRP material (only one thin FRP outer tube is required); 2) The steel inner tube with better ductility is used as the longitudinal tensile material, so that the combined tube beam has good ductility.
  • the double-walled composite pipe beam is easier to connect with other members than the first type of beam because of the inner steel pipe and concrete; and the FRP outer pipe of the double-walled composite pipe beam is pressurized Concrete provides a good constraint, which is an advantage that Type II and III beams do not have; and, the double-walled composite tube beam is lighter than Type II and IV beams due to the removal of excess tensile concrete.
  • FIG. 1 is a schematic cross-sectional structural view of a first embodiment of a double-walled composite pipe beam of the present invention
  • FIG. 2 is a schematic cross-sectional structural view of a second embodiment of a double-walled composite pipe beam according to the present invention
  • FIG. 3 is a schematic cross-sectional structural view of a third embodiment of a double-walled composite pipe beam according to the present invention.
  • FIG. 4 is a schematic cross-sectional structural view of a first embodiment of a beam-and-plate type composite structure according to the present invention.
  • FIG. 5 is a schematic cross-sectional view showing a second embodiment of the beam-and-plate type combined structure of the present invention. detailed description
  • the double-walled composite pipe beam 10 is a hollow cylindrical beam member including a circular outer pipe 11 made of FRP, a circular inner pipe 12 made of steel, and a pipe 11 filled therein. Concrete 13 between the inner tube 12.
  • the FRP outer tube 11 and the steel inner tube 12 are not arranged concentrically, and the steel inner tube 12 is eccentrically inclined toward the tension side of the combined tube beam 10, so as to better exert the steel tube as ductility. Good longitudinal tensile material.
  • a plurality of shear connectors 14 are provided on the consolidated concrete side of the steel inner tube 12 for ensuring the combined action between the steel inner tube 12 and the concrete 13, and can also be used as an FRP outer tube when pouring concrete.
  • a spacer between 11 and the inner steel tube 12 is to fix the relative positions of the two tubes.
  • the shear connectors 14 are evenly distributed along the circumferential and longitudinal directions (not shown) of the inner tube 12.
  • the shear connectors 14 may be T-ribbed, studs or other suitable form, welded or otherwise secured to the sides of the steel inner tube 12, the depth of which is embedded in the concrete 13 depending on the concrete at the respective locations 13 The thickness and the force requirements of the component.
  • the invention is not limited thereto, and in various embodiments, the shape and distribution of the shear connectors may be different depending on the actual application.
  • the double-walled composite pipe beam 20 is a hollow rectangular columnar beam member having a structure similar to that of the composite pipe beam 10 shown in Fig. 1.
  • the double-walled composite pipe beam 20 includes a rectangular FRP outer pipe 21, a circular steel inner pipe 22, and concrete 23 filled between the outer pipe 21 and the inner pipe 22.
  • the inner steel tube 22 is eccentric with respect to the FRP outer tube 21 toward the tension side of the composite tube beam 20 to better function as a longitudinally stretchable material having better ductility.
  • the consolidated concrete side of the steel inner tube 22 is provided with a plurality of shear connecting members 24 in the circumferential direction for ensuring the combined action between the steel inner tube 22 and the concrete 23, and can also serve as the FRP outer tube 11 when pouring concrete. And a spacer between the steel inner tube 12 to fix the relative positions of the two tubes.
  • the double-walled composite pipe beam 30 is a hollow rectangular columnar beam member having a structure similar to that of the composite pipe beam 10 shown in Fig. 1 and the composite pipe beam 20 shown in Fig. 2.
  • the double-walled composite pipe beam 30 includes a rectangular FRP outer pipe 31, a rectangular steel inner pipe 32, and a concrete 33 filled between the outer pipe 31 and the inner pipe 32.
  • the inner steel tube 32 is eccentric with respect to the FRP outer tube 31 toward the tension side of the composite tube beam 30 to better serve the effect of the steel tube as a longitudinally stretchable material having good ductility.
  • a side of the consolidated concrete of the steel inner tube 32 is provided with a plurality of shear connecting members 34 in the circumferential direction for ensuring the combined action between the inner steel tube 32 and the concrete 33, and can also be used as the FRP outer tube 11 when pouring concrete. And a spacer between the steel inner tube 12 to fix the relative positions of the two tubes.
  • the cross-sectional shape of the double-walled composite tube beam may be a circular, square, rectangular or other suitable shape between the FRP outer tube and a circular, square, rectangular or other suitable shape of the inner steel tube. Any combination.
  • the FRP outer pipe mainly receives circumferential stress, and its function is mainly to confine the concrete and enhance the shear resistance of the composite pipe beam.
  • the FRP outer tube only needs to have a very low load capacity for supporting wet concrete during on-site casting and to avoid tensile cracking under working load.
  • This feature of the composite tube beam has two advantages: (1) the FRP tube can be thin, thereby reducing material costs; (2) the concrete is constrained and the ductility of the beam is enhanced.
  • Such an FRP outer tube can be made by a filament winding technique and the fibers are wound in a direction close to the circumferential direction (for example, 80°) to improve the shear resistance of the composite tube beam and to ensure the constraint on the concrete. effect.
  • the double-walled composite pipe beam of the present invention has excellent corrosion resistance because the FRP outer pipe is highly corrosion-resistant, and the steel inner pipe is protected by the FRP outer pipe and concrete, and is not subjected to corrosion. If necessary, it is also possible to weld steel plates at both ends of the steel inner tube to seal the inside of the composite pipe beam.
  • the double-walled composite pipe beam of the present invention includes: (1) due to the use of a ductile steel inner tube as a longitudinal tensile material, and the concrete is well constrained by the inner and outer tubes, the combined tube The beam has excellent ductility; (2) The hollow section form eliminates a large amount of excess tensile concrete, so the combined tube beam is very light; (3) the inner and outer tubes can be used as permanent templates for pouring concrete, thus The composite pipe beam is very easy to construct, and the presence of the steel inner pipe and concrete makes the composite pipe beam easy to connect with other structural members.
  • the use of steel inner tubes ensures that the composite pipe beam has a large bending stiffness, which eliminates one of the major drawbacks of existing fiberglass FRP reinforced concrete beams, namely the relatively low modulus of elasticity of the glass fiber FRP. , making excessive deflection rather than strength a design control factor.
  • the double-walled composite pipe beam of the present invention is a very economical beam member even from the initial construction cost. Since the FRP outer tube is mainly used as a corrosion-resistant protective layer, a permanent formwork for pouring concrete, and an outer casing that enhances shear resistance and ductility, the fibers in the FRP outer tube are mainly pulled, so a relatively thin FRP tube is sufficient to achieve these. Features. The cost of such a thin FRP outer tube and steel inner tube can be completely offset by the removal of excess tensile concrete and the labor/material cost of saving temporary formwork and reinforcement. Thus, the double wall composite pipe beam of the present invention has substantially the same initial construction cost as existing reinforced concrete beams. In addition, since the former is lighter in weight, the cost required for the support member is further saved. Finally, the excellent corrosion resistance of the double-walled composite pipe beam of the present invention also greatly saves the cost of post-maintenance.
  • the present invention has been described above in connection with the embodiment shown in FIGS. 1 to 3 for a double-walled composite pipe beam having the same cross-section along the length of the beam, which is particularly suitable for use as a simply supported beam.
  • the steel inner tube of the combined tube beam may be placed obliquely along the length direction, that is, the steel inner tube is disposed near the lower portion of the cross section in the positive bending moment region, and is close to the horizontal portion in the negative bending moment region. With the upper part of the section, such a double-walled composite pipe beam can be used as a continuous beam.
  • the double-walled composite pipe beam of the present invention can be used for the main beam of a bridge, a beam/board structure of a bridge, or a curved member (such as a beam and a panel) of other structures in a corrosive/harsh environment.
  • the two applications of the double-walled composite pipe beam of the present invention for beam-and-plate composite structures are described below in conjunction with Figures 4 and 5.
  • the beam-and-plate composite structure 40 is composed of a double-walled composite pipe beam 41 according to an embodiment of the present invention and a panel 42 disposed thereon to form a beam-and-plate deck system.
  • the double-walled composite pipe beam 41 is a hollow rectangular columnar beam member having the cross-sectional form shown in Fig. 2 described above. Specifically, as shown in FIG.
  • the double-walled composite pipe beam 41 includes a rectangular FRP outer pipe 411, a circular steel inner pipe 412, and a concrete 413 filled therebetween, and on the consolidated concrete side of the steel inner pipe 412 A plurality of shear connectors 414 are provided to enhance the combined action of the inner steel tube 412 and the concrete 413.
  • Panel 42 can be made of FRP composite, aluminum, or other suitable material that is lightweight and corrosion resistant.
  • the panel 42 can also be an FRP-concrete composite panel, such as a composite panel obtained by pouring a layer of concrete onto an FRP profile.
  • the panel 42 may be adhesively bonded to the double-walled composite tube beam 41 by an adhesive layer 43, or the composite tube beam 41 may be joined to the panel 42 using a connector such as a shear button.
  • the beam-and-plate composite structure 50 is comprised of a double-wall composite pipe beam 51 and an FRP reinforced concrete panel 52 in accordance with an embodiment of the present invention to form a deck or floor system.
  • the FRP reinforced concrete panel 52 is provided with a plurality of FRP ribs, such as the FRP ribs 521 and 522 shown in the figure, and the longitudinal FRP ribs for controlling the crack at the bottom of the panel 52 are not shown for the sake of clarity.
  • the double-walled composite pipe beam 51 is a hollow cylindrical beam member having a cross-sectional form similar to that of the embodiment shown in Fig.
  • a circular FRP outer tube 511 including a circular FRP outer tube 511, a circular steel inner tube 512, and a concrete filled therebetween 513, and a plurality of first shear connectors 514 are provided on the consolidated concrete side of the steel inner tube 512 to reinforce the steel inner tube 512 and the concrete 513 The combined effect.
  • a reinforcing rib 515 is also embedded in the upper portion of the composite pipe beam 51 in advance. The rib 515 protrudes through the wall of the FRP outer tube 511 and is connected to the bottom FRP rib 521 of the concrete panel 52 through the mechanical joint 523, thereby integrating the composite tube beam 51 with the concrete panel 52.
  • the composite pipe beam 51 may also be provided with other suitable forms of the second shear connection 516 penetrating the FRP outer pipe 511 into the concrete panel 52 to ensure a space between the composite pipe beam 51 and the concrete panel 52.
  • the ribs 515 and the second shear connectors 516 can be made of stainless steel, polymer coated steel, or other materials having excellent corrosion resistance. Since the fibers of the FRP outer tube 511 are nearly circumferentially wound, the penetration of the stiffener 515 and the second shear connector 516 through the FRP outer tube 511 does not significantly affect the overall performance of the outer tube. Thus, such a beam-and-plate composite structure 50 retains all of the advantages of the double-walled composite tube beam previously described.
  • the double wall composite pipe beam according to the present invention and the beam and slab combination structure using such a composite pipe beam are very competitive alternatives to existing beam members and deck/floor systems.
  • the present invention provides a durable, ductile, and economical solution to overcome the corrosion and degradation problems of infrastructure throughout the world.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

L'invention concerne une poutre tubulaire combinée à paroi double de stratifié-verre-béton-acier et une structure combinée poutre-plaque l'utilisant. La poutre tubulaire combinée à paroi double (10) comprend un tuyau externe en stratifié-verre (11), un tuyau interne en acier (12) et une partie de béton (13) chargée entre le tuyau externe en stratifié-verre (11) et le tuyau interne en acier (12), et de multiples connecteurs (14) sont agencés sur le tuyau interne en acier (12) du côté en regard de la partie en béton. Le tuyau interne en acier (12) peut être installé excentriquement vers un côté de tension de la poutre tubulaire combinée (10) par rapport au tuyau externe en stratifié-verre (11). La structure combinée poutre-plaque comprend : une structure combinée poutre-plaque (40) formée par la poutre tubulaire combinée à paroi double (10) combinée avec une plaque de surface légère et résistante à la corrosion (42) ; ou une structure combinée poutre-plaque (50) formée par la poutre tubulaire combinée à paroi double (10) combinée avec une plaque de surface en béton à barre de stratifié-verre (52), la partie supérieure de la poutre tubulaire combinée à paroi double (10) étant solidairement combinée dans la partie inférieure de la plaque de surface en béton à barre de stratifié-verre (52).
PCT/CN2011/000880 2010-05-24 2011-05-23 Poutre tubulaire combinée à paroi double de stratifié-verre-béton-acier et structure combinée poutre-plaque l'utilisant WO2011147194A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010180716.6 2010-05-24
CN201010180716.6A CN102261164B (zh) 2010-05-24 2010-05-24 Frp-混凝土-钢双壁组合管梁及采用该梁的梁板式组合结构

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WO2011147194A1 true WO2011147194A1 (fr) 2011-12-01

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US (1) US20120124937A1 (fr)
CN (1) CN102261164B (fr)
WO (1) WO2011147194A1 (fr)

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CN105696728A (zh) * 2016-01-29 2016-06-22 广东工业大学 内置纤维增强复合管约束金属骨架混凝土的组合剪力墙

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CN111733986B (zh) * 2020-07-13 2021-04-20 青岛理工大学 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法
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CN114861254B (zh) * 2022-03-30 2023-05-16 中铁二院工程集团有限责任公司 一种桥梁用钢管钢纤维混凝土结构抗弯刚度的计算方法
CN115162358B (zh) * 2022-08-02 2023-12-01 中国建筑第七工程局有限公司 一种基坑工程装配式钢混组合支撑体系及施工方法
CN115370073A (zh) * 2022-08-15 2022-11-22 中国建筑第八工程局有限公司 一种用于锚固碳纤维筋的夹片-粘结复合式锚具

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