CN110714401A - FRP pipe sea water sea sand concrete-reinforced concrete composite beam - Google Patents
FRP pipe sea water sea sand concrete-reinforced concrete composite beam Download PDFInfo
- Publication number
- CN110714401A CN110714401A CN201911092328.XA CN201911092328A CN110714401A CN 110714401 A CN110714401 A CN 110714401A CN 201911092328 A CN201911092328 A CN 201911092328A CN 110714401 A CN110714401 A CN 110714401A
- Authority
- CN
- China
- Prior art keywords
- sea sand
- frp pipe
- concrete
- seawater sea
- sand concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 139
- 239000013535 sea water Substances 0.000 title claims abstract description 137
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 239000004567 concrete Substances 0.000 claims abstract description 155
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 83
- 239000010959 steel Substances 0.000 claims abstract description 83
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 24
- 238000010276 construction Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 235000014653 Carica parviflora Nutrition 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 241000243321 Cnidaria Species 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 132
- 239000011151 fibre-reinforced plastic Substances 0.000 description 132
- 238000010586 diagram Methods 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009440 infrastructure construction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000242757 Anthozoa Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- 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
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The FRP pipe seawater sea sand concrete-reinforced concrete composite beam is composed of common concrete, an FRP pipe, seawater sea sand concrete, tensioned longitudinal steel bars, stirrups and structural steel bars, wherein the seawater sea sand concrete is filled in the cross section of the FRP pipe to form an FRP pipe seawater sea sand concrete member, more than one FRP pipe seawater sea sand concrete member is arranged in the upper 3/5 range of the whole cross section, the tensioned longitudinal steel bars are positioned in the lower 2/5 range of the whole cross section, the FRP pipe seawater sea sand concrete member is arranged in the space of a steel bar framework, and the tensioned longitudinal steel bars, the stirrups, the structural steel bars and the FRP pipe seawater sea sand concrete member are solidified into a whole by pouring the common concrete. The invention realizes the resource utilization of seawater and sea sand concrete, and is beneficial to resource saving and sustainable development.
Description
Technical Field
The invention belongs to the field of civil engineering, relates to a reinforced concrete beam component, and particularly relates to an FRP (fiber reinforced plastic) pipe seawater sea sand concrete-reinforced concrete composite beam.
Background
The reinforced concrete beam is the most basic load-bearing member in engineering structures such as house buildings, bridge buildings and the like, and has a wide application range. Along with economic development and social progress, people have higher and higher requirements on the stress performance of the reinforced concrete beam, and meanwhile, large-scale infrastructure construction has huge requirements on raw materials, so that resources such as river sand and the like are in more and more shortage, the mechanical performance of the reinforced concrete beam is improved on the premise of green conservation, economy and environmental protection, and the resource utilization of the infrastructure construction can be continuously the focus of research of people.
At present, the reinforced concrete beam is reinforced mainly by using high-strength concrete materials, increasing the using amount of reinforcing steel bars and constructing a combined structure, for example, the chinese patent "201721417476.0" discloses a combined reinforced concrete beam, which comprises a concrete main body, bent reinforcing steel bars, stirrups and erection bars. The presence of various reinforcing bars improves the load bearing capacity, stiffness and ductility of the reinforced concrete beam. However, the arrangement of various types of steel bars increases the steel bar consumption and material cost, and increases the construction complexity; for another example, chinese patent "201821938910.4" discloses a reinforced concrete beam reinforcing member, including a concrete slab and a reinforced concrete beam, wherein one or more layers of aluminum alloy reinforcements are disposed in the concrete slab, and the concrete slab is adhered to the bottom of the concrete beam, so that the structural strength is improved, and the reinforced concrete beam reinforcing member has good ductility, fire resistance and corrosion resistance, but the combined structure increases the cross-sectional area of the beam body, is not favorable for fully utilizing space, and is used in a narrow space to affect the beauty; for another example, chinese patent "201811523132.7" discloses a high-strength reinforced concrete beam, which includes a concrete main body and a high-strength steel bar, wherein the concrete main body includes a common concrete layer and a high-toughness fiber-reinforced cement composite layer.
In conclusion, the existing reinforced concrete beam reinforcing method uses a large amount of high-strength materials, is high in cost and is not beneficial to environmental protection and green development; meanwhile, the reinforcing steel bars used in the reinforced concrete beam are difficult to solve the problem of chloride ion corrosion, and the used coarse aggregate and fine aggregate have strict limitation on the content of chloride ions, so that the sustainable utilization of rich resources such as river sand and the like is difficult to realize. Therefore, the reinforced concrete beam member which is environment-friendly, uses green materials and can effectively improve the stress performance has obvious practical significance for the construction of infrastructure.
Disclosure of Invention
The invention aims to provide an FRP pipe seawater sea sand concrete-reinforced concrete composite beam, which comprises common concrete, an FRP pipe, seawater sea sand concrete, tensile longitudinal steel bars, stirrups and structural steel bars, wherein the seawater sea sand concrete is filled in the cross section of the FRP pipe to form an FRP pipe seawater sea sand concrete member, the FRP pipe seawater sea sand concrete member is configured at the upper compression area of the whole cross section to bear compression stress, the tensile longitudinal steel bars and the structural steel bars are arranged along the axial direction of the beam, the stirrups are vertical to the tensile longitudinal steel bars, the stirrups, the tensile longitudinal steel bars and the structural steel bars form a steel bar framework, the FRP pipe seawater sea sand concrete member is arranged in the space of the steel bar framework and is cast and cured to form a whole body by the common concrete, the FRP pipe isolates the common concrete from the seawater sea sand concrete to provide protection for resisting chlorine ion corrosion and provide possibility for configuring the steel bars in the external common concrete, the FRP pipe is formed by combining transverse fibers and longitudinal fibers, the content of the transverse fibers accounts for more than 80%, or the fiber direction and the cross section direction are arranged at an angle of 0-60 degrees, transverse restraint is effectively provided for seawater sea sand concrete, the stress performance of the seawater sea concrete is enhanced, meanwhile, the FRP pipe provides a pouring template for the seawater sea sand concrete, the resource utilization of the seawater sea sand concrete is realized, and the characteristics of traditional reinforced concrete are not changed in the whole structure.
The technical scheme of the invention is as follows: the invention provides an FRP pipe seawater sea sand concrete-reinforced concrete composite beam, which is characterized by comprising common concrete, FRP pipes, seawater sea sand concrete, tensile longitudinal steel bars, stirrups and structural steel bars, wherein the seawater sea sand concrete is filled in the cross sections of the FRP pipes to form FRP pipe seawater sea sand concrete members, more than one FRP pipe seawater sea sand concrete members are arranged in the range of 3/5 on the upper part of the whole cross section, the tensile longitudinal steel bars and the structural steel bars are arranged along the axial direction of the beam, the tensile longitudinal steel bars are arranged in the range of 2/5 on the lower part of the whole cross section, the stirrups are arranged in the direction vertical to the axial direction of the tensile longitudinal steel bars, the structural steel bars and the FRP pipe seawater sea sand concrete members, the stirrups, the tensile longitudinal steel bars and the structural steel bars form a steel bar framework, and the FRP pipe seawater sea sand concrete members are arranged in the space of the steel bar framework, the common concrete is poured and cured into a whole by the tension longitudinal steel bar, the stirrup, the structural steel bar and the FRP pipe seawater sea sand concrete member.
The FRP pipe seawater sea sand concrete member is provided with a connecting system with a rectangular convex structure, an arc convex structure and a winding structure along the axis direction, the FRP pipe seawater sea sand concrete member part and a common concrete part work together, the rectangular convex structure and the arc convex structure are formed by FRP pipe outer wall components, the FRP pipe seawater sea sand concrete member part is linear or discrete point-shaped in the circumferential direction, and the winding structure is a winding attachment of the FRP pipe outer wall and can be manufactured by fiber dipping.
The FRP pipe seawater sea sand concrete member is provided with connecting pin bolts distributed along the axis direction, connecting grids and a shear force transmission structure of the connecting plate, the connecting pin bolts, the connecting grids and the root of the connecting plate are implanted into the seawater sea sand concrete, the exposed end part is poured into a whole with common concrete, the connecting pin bolts, the connecting grids and the connecting plate are arranged discretely, the connecting pin bolts, the connecting grids and the connecting plate are made of corrosion-resistant metal materials or FRP materials, the shear force transmission structure is arranged, the FRP pipe seawater sea sand concrete member and the common concrete interface can be prevented from sliding horizontally and separating from each other, and the FRP pipe seawater sea sand concrete member and the common concrete interface can work integrally and jointly.
The cross section shapes and sizes of the plurality of FRP pipe seawater sea sand concrete members are arbitrary, and the mutual position relation is not limited, so that the seawater sea sand concrete members can be flexibly designed according to the needs in the actual engineering conveniently.
The FRP pipe is one or more of carbon fiber, basalt fiber, glass fiber and aramid fiber.
The seawater sea sand concrete is prepared from seawater, sea sand and broken stones or coral, the FRP pipe isolates common concrete from the seawater sea sand concrete, can prevent the corrosion of harmful chloride ions in the seawater sea sand, and provides possibility for configuring reinforcing steel bars in the common concrete.
The FRP pipe seawater sea sand concrete component is cast in place or prefabricated in advance, and if the FRP pipe seawater sea sand concrete component is prefabricated in advance, the FRP pipe seawater sea sand concrete component is buried in common concrete as a prefabricated component, so that the on-site concrete pouring workload is reduced.
The invention has the following remarkable advantages:
(1) the FRP pipe provides protection for resisting chloride ion corrosion, provides an isolation barrier between seawater sea sand concrete and common concrete, and provides possibility for configuring reinforcing steel bars in external common concrete.
(2) The FRP pipe provides restraint for seawater and sea sand concrete, and the stress performance of the FRP pipe can be effectively improved.
(3) The FRP pipe seawater sea sand concrete member is cast in place or prefabricated in advance, and is favorable for the assembly development of the structure.
(4) The aggregate adopted by the common concrete is the primary aggregate or the recycled aggregate or the mixture of the primary aggregate and the recycled aggregate, and the effect of saving resources is further improved by adopting the recycled aggregate.
(5) The FRP pipe seawater sea sand concrete member is provided with the rectangular convex structure, the arc convex structure and the winding structure along the axis direction, and the shear force transmission structure is arranged at the same time, so that the horizontal mutual sliding and separation of the FRP pipe seawater sea sand concrete member and the common concrete at the joint surface can be prevented, and the integrity of the structure is enhanced.
The invention adopts the environment-friendly seawater and sea sand concrete, and is beneficial to resource saving and sustainable development. At present, the demand of important raw material sand for concrete is higher and higher, the supply is more and more tense, the coast line of China is long, the reserve amount of seawater and sea sand is large, the seawater and the sea sand are prepared into concrete for use, the concrete meets the resource saving and environment-friendly development route of China, and has a far-reaching prospect.
Drawings
FIG. 1: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural cross section schematic diagram is shown when a circular FRP pipe is arranged in common concrete in a single form;
FIG. 2: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural longitudinal section schematic diagram is shown when a circular FRP pipe is arranged in common concrete in a single form;
FIG. 3: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural cross section schematic diagram is shown when a plurality of round FRP pipes are arranged in common concrete;
FIG. 4: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural longitudinal section schematic diagram is shown when a plurality of round FRP pipes are arranged in common concrete;
FIG. 5: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural cross section schematic diagram is shown when rectangular FRP pipes are arranged in common concrete in a single form;
FIG. 6: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural longitudinal section schematic diagram is shown when a rectangular FRP pipe is arranged in common concrete in a single form;
FIG. 7: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural cross section schematic diagram is shown when rectangular FRP pipes are arranged in common concrete in a plurality of forms;
FIG. 8: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural longitudinal section schematic diagram is shown when rectangular FRP pipes are arranged in common concrete in a multi-root mode;
FIG. 9: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a circular FRP pipe is arranged in common concrete in a single form, and a structural longitudinal section schematic diagram is provided along an axis direction when a connecting pin bolt is arranged;
FIG. 10: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a circular FRP pipe is arranged in common concrete in a single form, and a structural longitudinal section schematic diagram is shown when a connecting plate is arranged along an axis direction;
FIG. 11: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a circular FRP pipe is arranged in common concrete in a single form, and a structural longitudinal section schematic diagram is arranged along an axis direction when a connecting grid is arranged;
FIG. 12: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a circular FRP pipe is arranged in common concrete in a single form, and a structural longitudinal section schematic diagram is provided along an axis direction when a rectangular convex structure is arranged;
FIG. 13: a circular FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a structural longitudinal section schematic diagram is formed when a circular FRP pipe is arranged in common concrete in a single form and is provided with an arc-shaped bulge structure along the axis direction;
FIG. 14: a FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized in that a circular FRP pipe is arranged in common concrete in a single form, and a schematic structural longitudinal section is arranged along the axial direction;
in the drawings, 1 is ordinary concrete; 2 is FRP pipe; 20 is an FRP pipe seawater sea sand concrete member; 201 is a rectangular convex structure; 202 is an arc convex structure; 203 is a wound type configuration; 206 is a connecting pin; 207 is a connection grid; 208 is a connecting plate; 3 is seawater sea sand concrete; 4 is a tensile longitudinal steel bar; 5 is a stirrup; and 6, constructing steel bars.
The specific implementation mode is as follows:
in order to more clearly understand the technical features, objects, and effects of the present invention, a detailed description of embodiments of the present invention will be given with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-2, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam comprises ordinary concrete 1, FRP pipes 2, seawater sea sand concrete 3, tensile longitudinal steel bars 4, stirrups 5 and structural steel bars 6. The 1 round FRP pipes 2 are hollow, seawater sea sand concrete 3 is filled in the FRP pipes 2 and is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and construction steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the ordinary concrete 1 is poured and maintained.
Example 2:
as shown in fig. 3-4, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam comprises ordinary concrete 1, FRP pipes 2, seawater sea sand concrete 3, tensile longitudinal steel bars 4, stirrups 5 and structural steel bars 6. The 4 round FRP pipes 2 are hollow and have two major diameters and two minor diameters, seawater sea sand concrete 3 is filled in the FRP pipes 2 and is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and constructional steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of the common concrete 1 are completed.
Example 3:
as shown in fig. 5-6, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam comprises ordinary concrete 1, FRP pipes 2, seawater sea sand concrete 3, tensile longitudinal steel bars 4, stirrups 5 and structural steel bars 6. The FRP pipe 2 with 1 rectangle is hollow, seawater sea sand concrete 3 is filled in the FRP pipe 2, the FRP pipe is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and construction steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of the common concrete 1 are completed.
Example 4:
as shown in fig. 7-8, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam comprises ordinary concrete 1, FRP pipes 2, seawater sea sand concrete 3, tensile longitudinal steel bars 4, stirrups 5 and structural steel bars 6. The 4 rectangular FRP pipes 2 are hollow and have the same diameter, seawater sea sand concrete 3 is filled in the FRP pipes 2 and is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and construction steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the ordinary concrete 1 is poured and cured.
Example 5:
as shown in fig. 9, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam includes ordinary concrete 1, FRP pipe 2, seawater sea sand concrete 3, tensile longitudinal steel bar 4, stirrup 5, and structural steel bar 6. The 1 round FRP pipe 2 is hollow, the connecting pins 206 are distributed along the axis direction on the periphery, the FRP pipe 2 is filled with seawater sea sand concrete 3 and is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and constructional steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of the common concrete 1 are completed.
Example 6:
as shown in fig. 10, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam includes ordinary concrete 1, FRP pipe 2, seawater sea sand concrete 3, tensile longitudinal steel bar 4, stirrup 5, and structural steel bar 6. The 1 round FRP pipes 2 are hollow, the periphery of the FRP pipes are provided with connecting plates 208 along the axial direction, the FRP pipes 2 are filled with seawater sea sand concrete 3, the seawater sea sand concrete is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and constructional steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of the common concrete 1 are finished.
Example 7:
as shown in fig. 11, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam includes ordinary concrete 1, FRP pipe 2, seawater sea sand concrete 3, tensile longitudinal steel bar 4, stirrup 5, and structural steel bar 6. The 1 round FRP pipes 2 are hollow, the connection grids 207 are distributed along the axis direction on the periphery, seawater sea sand concrete 3 is filled in the FRP pipes 2 and is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and constructional steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of the common concrete 1 are completed.
Example 8:
as shown in fig. 12, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam includes ordinary concrete 1, FRP pipe 2, seawater sea sand concrete 3, tensile longitudinal steel bar 4, stirrup 5, and structural steel bar 6. The FRP pipe comprises 1 round FRP pipe 2, rectangular protruding structures 201 are distributed around the FRP pipe 2 along the axis direction, seawater sea sand concrete 3 is filled in the FRP pipe 2, the FRP pipe is arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and structural steel bars 6, the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of common concrete 1 are completed.
Example 9:
as shown in fig. 13, an FRP pipe seawater sea sand concrete-reinforced concrete composite beam includes ordinary concrete 1, FRP pipe 2, seawater sea sand concrete 3, tensile longitudinal steel bar 4, stirrup 5, and structural steel bar 6. The FRP pipe comprises 1 round FRP pipe 2, arc-shaped protruding structures 202 distributed along the axis direction on the periphery, seawater sea sand concrete 3 filled in the FRP pipe 2 and arranged in a steel bar framework space formed by stirrups 5, tensioned longitudinal steel bars 4 and structural steel bars 6, wherein the stirrups 5 are arranged perpendicular to the tensioned longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of common concrete 1 are completed.
Example 10:
as shown in fig. 14, the FRP pipe seawater sea sand concrete-reinforced concrete composite beam comprises ordinary concrete 1, FRP pipes 2, seawater sea sand concrete 3, tensile longitudinal steel bars 4, stirrups 5 and structural steel bars 6. The FRP pipe comprises 1 round FRP pipe 2, winding structures 203 are distributed around the FRP pipe in the axis direction, seawater sea sand concrete 3 is filled in the FRP pipe 2 and is arranged in a steel bar framework space formed by stirrups 5, tension longitudinal steel bars 4 and construction steel bars 6, the stirrups 5 are arranged perpendicular to the tension longitudinal steel bars 4, and the FRP pipe seawater sea sand concrete-reinforced concrete composite beam is formed after the pouring and maintenance of common concrete 1 are completed.
In the implemented structure, the FRP pipe is one or more of carbon fiber, basalt fiber, glass fiber and aramid fiber.
The seawater sea sand concrete is prepared by adopting seawater, sea sand and broken stones or corals, and the FRP pipe isolates common concrete from the seawater sea sand concrete.
The FRP pipe seawater sea sand concrete member is cast in place or prefabricated in advance.
Claims (7)
1. An FRP pipe seawater sea sand concrete-reinforced concrete composite beam is characterized by comprising common concrete (1), an FRP pipe (2), seawater sea sand concrete (3), tension longitudinal steel bars (4), stirrups (5) and construction steel bars (6), wherein the seawater sea sand concrete (3) is filled in the interior of the section of the FRP pipe (2) to form an FRP pipe seawater sea sand concrete member (20), more than one FRP pipe seawater sea sand concrete member (20) is arranged in the range of the upper part 3/5 of the whole section, the tension longitudinal steel bars (4) and the construction steel bars (6) are arranged along the axial direction of the beam, the tension longitudinal steel bars (4) are positioned in the range of the lower part 2/5 of the whole section, and the stirrups (5) are arranged in the axial direction of the tension longitudinal steel bars (4), the construction steel bars (6) and the FRP pipe seawater sea sand concrete member (20), the stirrups (5), the tensioned longitudinal steel bars (4) and the structural steel bars (6) form a steel bar framework, the FRP pipe seawater sea sand concrete member (20) is placed in the space of the steel bar framework, and the tensioned longitudinal steel bars (4), the stirrups (5), the structural steel bars (6) and the FRP pipe seawater sea sand concrete member (20) are poured and cured into a whole by common concrete (1).
2. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the FRP pipe seawater sea sand concrete member (20) is provided with a connection system of a rectangular convex structure (201), an arc convex structure (202) and a winding type structure (203) along the axial direction, the rectangular convex structure (201) and the arc convex structure (202) are the outer wall components of the FRP pipe, and are in a linear shape or a discrete point shape in the circumferential direction, and the winding type structure (203) is the winding attachment of the outer wall of the FRP pipe.
3. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the shear force transmission structure of the connecting pin bolts (206), the connecting grids (207) and the connecting plates (208) is distributed around the FRP pipe seawater sea sand concrete member (20) along the axial direction, the roots of the connecting pin bolts (206), the connecting grids (207) and the connecting plates (208) are embedded in the seawater sea sand concrete (3), the exposed ends are cast with the common concrete (1) into a whole, and the connecting pin bolts (206), the connecting grids (207) and the connecting plates (208) are distributed discretely.
4. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the cross-sectional shape and size of the plurality of FRP pipe seawater sea sand concrete members (20) are arbitrary, and the mutual positional relationship is not limited.
5. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the FRP pipe (2) is one or more of carbon fiber, basalt fiber, glass fiber and aramid fiber.
6. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the seawater sea sand concrete (3) is configured by seawater, sea sand and crushed stone or coral, and the FRP pipe (2) isolates the common concrete (1) from the seawater sea sand concrete (3).
7. The FRP pipe seawater sea sand concrete-reinforced concrete composite beam as claimed in claim 1, wherein the FRP pipe seawater sea sand concrete member (20) is cast in place or prefabricated in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911092328.XA CN110714401A (en) | 2019-11-08 | 2019-11-08 | FRP pipe sea water sea sand concrete-reinforced concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911092328.XA CN110714401A (en) | 2019-11-08 | 2019-11-08 | FRP pipe sea water sea sand concrete-reinforced concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110714401A true CN110714401A (en) | 2020-01-21 |
Family
ID=69215796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911092328.XA Pending CN110714401A (en) | 2019-11-08 | 2019-11-08 | FRP pipe sea water sea sand concrete-reinforced concrete composite beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110714401A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070020820A (en) * | 2005-08-17 | 2007-02-22 | 고려대학교 산학협력단 | A reinforced concrete column with internally confined hollow and the construction method |
| CN102261164A (en) * | 2010-05-24 | 2011-11-30 | 香港理工大学 | FRP (fibre-reinforced polymer)-concrete-steel double-wall combined tubular beam and beam-slab combined structure adopting same |
| CN202544235U (en) * | 2012-03-15 | 2012-11-21 | 东莞理工学院 | Fiber reinforced plastic (FRP) outer pack pipe FRP geosynthetic sea sand fiber reinforced concrete bending member |
| CN202884281U (en) * | 2012-11-04 | 2013-04-17 | 新疆亚通新材料科技有限公司 | Plastic composite pipe |
| CN203939180U (en) * | 2014-05-04 | 2014-11-12 | 广东工业大学 | Marine sand concrete flexural member |
| CN106337532A (en) * | 2016-08-25 | 2017-01-18 | 广东工业大学 | Double-toothed-connection-component inner double-walled pipe combination member and manufacturing method thereof |
| CN107217786A (en) * | 2017-05-05 | 2017-09-29 | 广东工业大学 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
| CN107386533A (en) * | 2016-02-18 | 2017-11-24 | 香港理工大学 | Reinforcement feature and its manufacture method, complex coagulation earth pillar |
| CN110318497A (en) * | 2019-07-18 | 2019-10-11 | 广东工业大学 | A kind of armored concrete-FRP pipe constraint seawater sea sand regeneration concrete coupled column |
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| CN211113134U (en) * | 2019-11-08 | 2020-07-28 | 南京林业大学 | FRP pipe sea water sand concrete core reinforced concrete beam |
| CN211775115U (en) * | 2019-11-08 | 2020-10-27 | 南京林业大学 | Steel pipe mixed concrete composite structure |
-
2019
- 2019-11-08 CN CN201911092328.XA patent/CN110714401A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070020820A (en) * | 2005-08-17 | 2007-02-22 | 고려대학교 산학협력단 | A reinforced concrete column with internally confined hollow and the construction method |
| CN102261164A (en) * | 2010-05-24 | 2011-11-30 | 香港理工大学 | FRP (fibre-reinforced polymer)-concrete-steel double-wall combined tubular beam and beam-slab combined structure adopting same |
| CN202544235U (en) * | 2012-03-15 | 2012-11-21 | 东莞理工学院 | Fiber reinforced plastic (FRP) outer pack pipe FRP geosynthetic sea sand fiber reinforced concrete bending member |
| CN202884281U (en) * | 2012-11-04 | 2013-04-17 | 新疆亚通新材料科技有限公司 | Plastic composite pipe |
| CN203939180U (en) * | 2014-05-04 | 2014-11-12 | 广东工业大学 | Marine sand concrete flexural member |
| CN107386533A (en) * | 2016-02-18 | 2017-11-24 | 香港理工大学 | Reinforcement feature and its manufacture method, complex coagulation earth pillar |
| CN106337532A (en) * | 2016-08-25 | 2017-01-18 | 广东工业大学 | Double-toothed-connection-component inner double-walled pipe combination member and manufacturing method thereof |
| CN107217786A (en) * | 2017-05-05 | 2017-09-29 | 广东工业大学 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
| CN110318497A (en) * | 2019-07-18 | 2019-10-11 | 广东工业大学 | A kind of armored concrete-FRP pipe constraint seawater sea sand regeneration concrete coupled column |
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| CN211113134U (en) * | 2019-11-08 | 2020-07-28 | 南京林业大学 | FRP pipe sea water sand concrete core reinforced concrete beam |
| CN211775115U (en) * | 2019-11-08 | 2020-10-27 | 南京林业大学 | Steel pipe mixed concrete composite structure |
Non-Patent Citations (1)
| Title |
|---|
| 曹旗;王晓峰;王吉忠;仲伟秋;: "CFRP外包膨胀混凝土组合梁的抗弯性能", 水利与建筑工程学报, no. 02, 15 April 2016 (2016-04-15) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100386487C (en) | Multi-rib structure system and its connection construction method | |
| CN110714577A (en) | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete | |
| CN104805767A (en) | Prefabricated assembly FRP-reinforcing steel-bar-concrete combined bridge deck and construction method | |
| CN105442864A (en) | Local reinforcing method of circular reinforced concrete column | |
| CN211775115U (en) | Steel pipe mixed concrete composite structure | |
| CN201043326Y (en) | Composite fibre hollow grouting anchoring-bolt | |
| CN208533868U (en) | A kind of novel arrangement of reinforcement hollow steel pipe high-strength concrete column | |
| CN204589815U (en) | Prefabricated assembled FRP-steel-concrete combined bridge deck | |
| CN208718220U (en) | A kind of profile steel concrete column using GFRP tendons | |
| CN211113134U (en) | FRP pipe sea water sand concrete core reinforced concrete beam | |
| CN212336419U (en) | Assembled composite wall based on steel pipe | |
| CN113047511A (en) | Assembled FRP-gradient sea sand concrete combined wallboard | |
| CN110056117B (en) | Corrugated surface hollow FRP profile sea sand concrete slab structure | |
| CN103306431B (en) | Concrete reinforced pipe lattice column | |
| CN208857717U (en) | A kind of underwater pillarwork of aluminum alloy coiled materials reinforcement bridge | |
| CN211850370U (en) | Sea sand fiber recycled concrete combined column with built-in FRP framework, hollow interlayer and stainless steel tube | |
| CN110714401A (en) | FRP pipe sea water sea sand concrete-reinforced concrete composite beam | |
| CN215483730U (en) | Prefabricated high-durability composite wallboard | |
| CN212802272U (en) | Sleeve reinforced concrete-seawater sea sand concrete superposed structure | |
| CN212836086U (en) | Assembled composite wall based on H shaped steel | |
| CN210288886U (en) | FRP restraint CFST bundle combination column | |
| CN103541478B (en) | Lattice superposed beam and plate and construction method thereof | |
| CN102134891A (en) | Novel dual-hollow superimposed structural member | |
| CN207177096U (en) | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column | |
| CN207003738U (en) | A kind of prefabricated steel faced wall with stirrup |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |