CN112252184A - FRP-UHPC combined bridge deck with opening stiffening ribs - Google Patents
FRP-UHPC combined bridge deck with opening stiffening ribs Download PDFInfo
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- CN112252184A CN112252184A CN202011120787.7A CN202011120787A CN112252184A CN 112252184 A CN112252184 A CN 112252184A CN 202011120787 A CN202011120787 A CN 202011120787A CN 112252184 A CN112252184 A CN 112252184A
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- frp
- uhpc
- transverse plate
- length direction
- stiffening ribs
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- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- 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
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an FRP-UHPC combined bridge deck with opening stiffening ribs, which can be used as a bridge deck for driving and a bridge deck for a pedestrian bridge. An FRP-UHPC combined bridge deck with opening stiffening ribs comprises FRP profiles and UHPC layers. The FRP section bar includes FRP opening stiffening rib, FRP trompil board and FRP diaphragm, and the upper surface of FRP diaphragm is connected with a plurality of FRP trompil boards, and the lower surface is connected with a plurality of FRP opening stiffening rib, and UHPC forms the UHPC layer is pour to the upper surface of FRP diaphragm, and a plurality of FRP trompil boards and a plurality of rib that run through are located the UHPC in situ. The invention solves the problems of cracking, corrosion, fatigue and the like of the traditional material; meanwhile, the bridge deck has the advantages of simple structure, convenient construction and manufacture, clear stress and popularization potential.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an FRP-UHPC combined bridge deck with open stiffening ribs.
Background
The existing bridge is mostly made of concrete bridge deck slab or orthotropic steel bridge deck slab. The orthotropic steel bridge deck with large medium rigidity and low cost has the defects of easy cracking, heavy self-weight and long field construction period, and the orthotropic steel bridge deck with light self-weight and short construction period has the problems of easy fatigue cracking, easy corrosion and the like. The fiber reinforced composite (FRP) is used as a material with high strength, light weight, good corrosion resistance and fatigue resistance, and the bridge deck made of the fiber reinforced composite can effectively avoid the problems of the two bridge decks.
However, the FRP also has the disadvantages of low elastic modulus, high cost, etc., and the full FRP bridge deck has low rigidity and low material utilization rate, so that it is difficult to obtain general popularization.
Therefore, it is necessary to reasonably combine FRP and ultra high performance concrete (hereinafter abbreviated as UHPC) and develop a novel FRP-UHPC composite deck slab.
Disclosure of Invention
The invention aims to provide an FRP-UHPC combined bridge deck with opening stiffening ribs.
The technical scheme adopted for achieving the purpose of the invention is that the FRP-UHPC combined bridge deck with the opening stiffening ribs is a unidirectional plate and comprises FRP sectional materials and UHPC layers.
The FRP section comprises FRP opening stiffening ribs, an FRP perforated plate and an FRP transverse plate, and the FRP transverse plate is a rectangular plate horizontally arranged.
The upper surface of FRP diaphragm is arranged with a plurality of FRP trompil boards, and a plurality of FRP trompil boards are arranged along the width direction of FRP diaphragm equidistant, and the length direction of FRP trompil board is unanimous with the length direction of FRP diaphragm, and the both ends of FRP trompil board length direction flush with FRP diaphragm length direction's both sides edge respectively.
The FRP perforated plate is provided with a plurality of preformed holes for the penetration of the penetrating ribs, and the penetrating ribs penetrate the preformed holes on each FRP perforated plate.
A plurality of FRP opening stiffening ribs are arranged on the lower surface of the FRP transverse plate, the plurality of FRP opening stiffening ribs are arranged at equal intervals along the width direction of the FRP transverse plate, the length direction of the FRP opening stiffening ribs is consistent with the length direction of the FRP transverse plate, and the two ends of the FRP opening stiffening ribs in the length direction are respectively flushed with the edges on the two sides of the FRP transverse plate in the length direction.
UHPC is poured to the upper surface of FRP diaphragm and forms UHPC layer, and a plurality of FRP trompil board and a plurality of muscle that pass through all are located UHPC in situ.
Further, the distance between two adjacent FRP opening stiffening ribs is less than or equal to 0.2 m.
Furthermore, UHPC is poured at both ends of the FRP transverse plate in the length direction, and the UHPC is filled in gaps among the plurality of FRP opening stiffening ribs.
Further, the penetrating rib is an FRP rib or a steel bar.
Furthermore, epoxy resin glue is coated on the contact surface of the UHPC layer and the FRP section.
Furthermore, the width of the FRP-UHPC combined bridge deck is more than or equal to 600 mm.
The invention has the beneficial effects that:
1. the invention solves the problems of cracking, corrosion, fatigue and the like of the traditional material; meanwhile, the bridge deck has simple structure, convenient construction and manufacture, clear stress and popularization potential;
2. the FRP profile is used as a UHPC casting bottom die, so that the construction speed is accelerated; the use of UHPC can increase the rigidity of the bridge deck and reduce the consumption of FRP; in the using process, the FRP sectional material replaces the bottom steel bar in the steel-concrete combined bridge deck, so that the volume of the tensioned concrete is reduced, the self weight of the structure is light, and the material utilization rate is high;
3. according to the invention, the shear member and other parts of the FRP are integrally formed, so that secondary splicing of the FRP material is avoided, and the reliability of shear connection is improved;
4. the FRP open stiffening rib is adopted to replace a common closed stiffening rib form in other common FRP combined bridge decks, the FRP consumption is reduced, and the structure is simplified;
5. the invention adopts UHPC, which can realize the characteristics of light weight and high strength by matching with FRP to the maximum extent.
Drawings
FIG. 1 is a schematic structural view of an FRP-UHPC composite bridge deck with open stiffeners of the present invention;
FIG. 2 is a schematic structural diagram of an FRP profile;
FIG. 3 is a cross-sectional view of a FRP-UHPC composite deck for open stiffeners in example 1;
FIG. 4 is a cross-sectional view of a FRP-UHPC composite deck slab with open stiffeners of example 2;
FIG. 5 is a cross-sectional view of an FRP-UHPC composite decking support for an open stiffener according to the present invention.
In the figure: FRP opening stiffening rib 1, FRP trompil board 2, preformed hole 201, UHPC layer 3, FRP diaphragm 4 and the muscle 5 that runs through.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses an FRP-UHPC combined bridge deck with opening stiffening ribs, which is a unidirectional plate with the width of more than or equal to 600mm, so as to avoid the increase of the processing and installation workload caused by the excessive number of plates laid on the full-bridge length. An FRP-UHPC combined bridge deck with opening stiffening ribs comprises FRP sectional materials and UHPC layers 3.
The FRP section integrated pultrusion molding refers to 1 or 2, the FRP section comprises an FRP opening stiffening rib 1, an FRP perforated plate 2 and an FRP transverse plate 4, and the FRP transverse plate 4 is a rectangular plate horizontally arranged.
Refer to 1 or 2, the upper surface of FRP diaphragm 4 is connected with a plurality of FRP trompil board 2, and a plurality of FRP trompil board 2 are arranged along the width direction of FRP diaphragm 4 equidistant, and the length direction of FRP trompil board 2 is unanimous with the length direction of FRP diaphragm 4, and the both ends of FRP trompil board 2 length direction flush with the both sides edge of FRP diaphragm 4 length direction respectively.
Referring to fig. 1, a plurality of prepared holes 201 for the penetrating ribs 5 to pass through are formed in the FRP perforated plate 2, and the penetrating ribs 5 pass through the prepared holes 201 in each FRP perforated plate 2. The penetrating ribs 5 are FRP ribs or reinforcing steel bars.
The lower surface of the FRP transverse plate 4 is connected with a plurality of FRP opening stiffening ribs 1, referring to FIG. 3, the FRP opening stiffening ribs 1 are rectangular plates. The FRP opening stiffening ribs 1 are arranged at equal intervals along the width direction of the FRP transverse plate 4, the length direction of the FRP opening stiffening ribs 1 is consistent with the length direction of the FRP transverse plate 4, and two ends of the FRP opening stiffening ribs 1 in the length direction are respectively flush with two side edges of the FRP transverse plate 4 in the length direction. Referring to fig. 1 or 5, UHPCs are poured at both ends of the FRP transverse plate 4 in the length direction, and the UHPCs are filled in gaps among a plurality of FRP opening stiffening ribs 1 to protect the plate support part.
The distance between two adjacent FRP opening stiffening ribs 1 is less than or equal to the width of the wheel load action 0.2m, and the weak part without the FRP opening stiffening ribs under the wheel load action is avoided.
Referring to fig. 1, UHPC is poured on the upper surface of the FRP transverse plate 4 to form a UHPC layer 3, and the FRP perforated plates 2 and the penetrating ribs 5 are located in the UHPC layer 3. And epoxy resin glue is coated on the contact surface of the UHPC layer 3 and the FRP section.
In the solid bridge, the FRP-UHPC combined bridge deck is transversely arranged between adjacent main beams and is continuously arranged along the longitudinal direction of the bridge. The shear pieces provided by the UHPC filled at the plate support and the main beam are connected between the main beam and the plate. The plate can be installed to the girder after pouring upper surface UHPC, also can transversely arrange whole bridge FRP section bar after unified upper surface UHPC of pouring.
The FRP section is a section with equal section, and is suitable for being produced by adopting a pultrusion process, thereby being convenient for industrial production and ensuring the FRP quality.
Example 2:
the embodiment discloses an FRP-UHPC combined bridge deck with opening stiffening ribs, which is a unidirectional plate and comprises FRP profiles and UHPC layers 3.
Referring to 1 or 2, the FRP section includes FRP opening stiffening rib 1, FRP perforated plate 2 and FRP transverse plate 4, and FRP transverse plate 4 is the rectangular plate of level setting.
Refer to 1 or 2, the upper surface of FRP diaphragm 4 is connected with a plurality of FRP trompil board 2, and a plurality of FRP trompil board 2 are arranged along the width direction of FRP diaphragm 4 equidistant, and the length direction of FRP trompil board 2 is unanimous with the length direction of FRP diaphragm 4, and the both ends of FRP trompil board 2 length direction flush with the both sides edge of FRP diaphragm 4 length direction respectively.
Referring to fig. 1, a plurality of prepared holes 201 for the penetrating ribs 5 to pass through are formed in the FRP perforated plate 2, and the penetrating ribs 5 pass through the prepared holes 201 in each FRP perforated plate 2.
The lower surface of the FRP transverse plate 4 is connected with a plurality of FRP opening stiffening ribs 1, referring to FIG. 4, the cross section of the FRP opening stiffening rib 1 is in an inverted T shape. The FRP opening stiffening ribs 1 are arranged at equal intervals along the width direction of the FRP transverse plate 4, the length direction of the FRP opening stiffening ribs 1 is consistent with the length direction of the FRP transverse plate 4, and two ends of the FRP opening stiffening ribs 1 in the length direction are respectively flush with two side edges of the FRP transverse plate 4 in the length direction.
Referring to fig. 1, UHPC is poured on the upper surface of the FRP transverse plate 4 to form a UHPC layer 3, and the FRP perforated plates 2 and the penetrating ribs 5 are located in the UHPC layer 3.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, the distance between two adjacent FRP opening stiffeners 1 is less than or equal to 0.2 m.
Example 4:
in the same structure as embodiment 3, further, referring to fig. 1 or 5, UHPCs are poured at both ends of the FRP transverse plate 4 in the length direction, and the UHPCs are filled between gaps of the plurality of FRP opening stiffening ribs 1 to protect the plate support.
Example 5:
the main structure of this embodiment is the same as that of embodiment 4, and further, the penetrating rib 5 is an FRP rib or a reinforcing steel bar.
Example 6:
the main structure of this embodiment is the same as that of embodiment 5, and further, an epoxy resin adhesive is coated on the contact surface of the UHPC layer 3 and the FRP profile.
Example 7:
the main structure of this embodiment is the same as that of embodiment 6, and further, the FRP-UHPC composite bridge deck is a unidirectional slab with a width of 600mm or more.
Claims (6)
1. An FRP-UHPC combined bridge deck with opening stiffening ribs is characterized in that: the panel is a unidirectional plate and comprises the FRP profile and a UHPC layer (3);
the FRP sectional material comprises an FRP opening stiffening rib (1), an FRP perforated plate (2) and an FRP transverse plate (4), and the FRP transverse plate (4) is a horizontally arranged rectangular plate;
the upper surface of the FRP transverse plate (4) is provided with a plurality of FRP perforated plates (2), the plurality of FRP perforated plates (2) are arranged at equal intervals along the width direction of the FRP transverse plate (4), the length direction of the FRP perforated plates (2) is consistent with that of the FRP transverse plate (4), and two ends of the FRP perforated plates (2) in the length direction are respectively flush with two side edges of the FRP transverse plate (4) in the length direction;
the FRP perforated plate (2) is provided with a plurality of preformed holes (201) for the penetrating ribs (5) to penetrate through, and the penetrating ribs (5) penetrate through the preformed holes (201) on each FRP perforated plate (2);
the lower surface of the FRP transverse plate (4) is provided with a plurality of FRP opening stiffening ribs (1), the plurality of FRP opening stiffening ribs (1) are arranged at equal intervals along the width direction of the FRP transverse plate (4), the length direction of the FRP opening stiffening ribs (1) is consistent with the length direction of the FRP transverse plate (4), and two ends of the FRP opening stiffening ribs (1) in the length direction are respectively flush with two side edges of the FRP transverse plate (4) in the length direction;
UHPC is poured on the upper surface of the FRP transverse plate (4) to form an UHPC layer (3), and the plurality of FRP perforated plates (2) and the plurality of penetrating ribs (5) are positioned in the UHPC layer (3).
2. An FRP-UHPC composite decking of open stiffeners as claimed in claim 1, wherein: the distance between two adjacent FRP opening stiffening ribs (1) is less than or equal to 0.2 m.
3. An FRP-UHPC composite decking of open stiffeners as claimed in claim 1, wherein: UHPC is poured at both ends of the FRP transverse plate (4) in the length direction, and the UHPC is filled in gaps among the FRP opening stiffening ribs (1).
4. An FRP-UHPC composite decking of open stiffeners as claimed in claim 1, wherein: the penetrating ribs (5) are FRP ribs or reinforcing steel bars.
5. An FRP-UHPC composite decking of open stiffeners as claimed in claim 1, wherein: and epoxy resin glue is coated on the contact surface of the UHPC layer (3) and the FRP section.
6. An FRP-UHPC composite decking of open stiffeners as claimed in claim 1, wherein: the width of the panel is more than or equal to 600 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020263550 | 2020-03-06 | ||
| CN2020202635503 | 2020-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112252184A true CN112252184A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011120787.7A Pending CN112252184A (en) | 2020-03-06 | 2020-10-19 | FRP-UHPC combined bridge deck with opening stiffening ribs |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100641607B1 (en) * | 2005-06-02 | 2006-11-02 | 한국건설기술연구원 | Fiber reinforced plastics deck module having integrated shear connector and concrete composite deck using thereof |
| CN101736691A (en) * | 2008-11-25 | 2010-06-16 | 同济大学 | Fiber reinforce plastic (FRP) ribbing folded plate-concrete combined bridge deck |
| CN201962604U (en) * | 2010-12-02 | 2011-09-07 | 西安建筑科技大学 | Fiber reinforce plastic (FRP) combined plate |
| CN103194970A (en) * | 2013-04-23 | 2013-07-10 | 黄海林 | Ribbed FRP (fiber reinforced plastic) component and concrete composite bridge deck |
| CN103194969A (en) * | 2013-04-07 | 2013-07-10 | 山东大学 | FRP (Fiber Reinforce Plastic)-concrete combined bridge deck |
| CN203795307U (en) * | 2014-03-30 | 2014-08-27 | 黄海林 | Ribbed FRP (fiber reinforce plastic) component |
| CN110644362A (en) * | 2019-11-08 | 2020-01-03 | 邹杨 | Combined bridge deck structure adopting hollow ultrahigh-performance concrete slab and construction method |
-
2020
- 2020-10-19 CN CN202011120787.7A patent/CN112252184A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100641607B1 (en) * | 2005-06-02 | 2006-11-02 | 한국건설기술연구원 | Fiber reinforced plastics deck module having integrated shear connector and concrete composite deck using thereof |
| CN101736691A (en) * | 2008-11-25 | 2010-06-16 | 同济大学 | Fiber reinforce plastic (FRP) ribbing folded plate-concrete combined bridge deck |
| CN201962604U (en) * | 2010-12-02 | 2011-09-07 | 西安建筑科技大学 | Fiber reinforce plastic (FRP) combined plate |
| CN103194969A (en) * | 2013-04-07 | 2013-07-10 | 山东大学 | FRP (Fiber Reinforce Plastic)-concrete combined bridge deck |
| CN103194970A (en) * | 2013-04-23 | 2013-07-10 | 黄海林 | Ribbed FRP (fiber reinforced plastic) component and concrete composite bridge deck |
| CN203795307U (en) * | 2014-03-30 | 2014-08-27 | 黄海林 | Ribbed FRP (fiber reinforce plastic) component |
| CN110644362A (en) * | 2019-11-08 | 2020-01-03 | 邹杨 | Combined bridge deck structure adopting hollow ultrahigh-performance concrete slab and construction method |
Non-Patent Citations (2)
| Title |
|---|
| 夏顶顶等: "FRP桁架-UHPC桥面板组合梁桥关键技术及应用研究", 《价值工程》 * |
| 田岛二郎等: "《桥梁》", 31 July 1984 * |
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Application publication date: 20210122 |
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