CN115478468B - Assembled reinforced concrete T-shaped beam bridge - Google Patents
Assembled reinforced concrete T-shaped beam bridge Download PDFInfo
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- CN115478468B CN115478468B CN202211368100.0A CN202211368100A CN115478468B CN 115478468 B CN115478468 B CN 115478468B CN 202211368100 A CN202211368100 A CN 202211368100A CN 115478468 B CN115478468 B CN 115478468B
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- span
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- prefabricated
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 31
- 230000007704 transition Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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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
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
-
- 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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an assembled reinforced concrete T-shaped beam bridge, which comprises a plurality of spans, wherein each span comprises a plurality of prefabricated members, adjacent prefabricated members on the same span are connected through first ripple connecting edges, adjacent prefabricated members on the adjacent spans are connected through second ripple connecting edges, the first ripple connecting edges on the adjacent spans are in smooth transition, and the second ripple connecting edges on the adjacent prefabricated members are in smooth transition; the first ripple connecting edge and the second ripple connecting edge are respectively provided with a cushion pad, and the cushion pads are fixedly connected through connecting pieces. The assembled reinforced concrete T-shaped bridge can solve the problem that dislocation is easy to occur between prefabricated members of the existing assembled bridge, and the service life of the bridge is influenced.
Description
Technical Field
The invention relates to the technical field of T-shaped beam bridges, in particular to an assembled reinforced concrete T-shaped beam bridge.
Background
The T-shaped beam bridge takes the T-shaped beam as the beam upper bridge of the main bearing structure, when the load on the bridge acts to generate positive bending moment, the Liang Zuocheng T shape with big upper part and small lower part and the reinforcement at the lower edge fully utilize the high compressive strength of concrete and the high tensile strength of the reinforcement, thereby saving materials and reducing dead weight compared with the rectangular beam bridge. But is not suitable for the situation that the load can generate a large negative bending moment, and the torsional rigidity stability is low.
Chinese patent CN114808659a discloses a small and medium-sized span self-balancing assembled reinforced concrete emergency bridge and application, including the upper arch bridge and the lower arch bridge that set up relatively, the both ends of upper arch bridge and lower arch bridge all are provided with connecting portion, go up the arch bridge and include a plurality of curved prefab, assemble through mortise and tenon structure between the prefab and form the upper arch bridge, lower arch bridge includes a plurality of curved prefab, assembles through mortise and tenon structure between the prefab and forms the lower arch bridge. In this patent, the prefab is assembled through mortise and tenon structure, is rigid contact between the prefab, influences the transmission of power for dislocation takes place easily between the adjacent prefab, influences the life of bridge.
Disclosure of Invention
The invention aims to provide an assembled reinforced concrete T-shaped bridge, which solves the problem that the prior assembled bridge prefabricated members are easy to misplace and influence the service life of the bridge.
In order to achieve the above purpose, the invention provides an assembled reinforced concrete T-shaped beam bridge, which comprises a plurality of spans, wherein each span comprises a plurality of prefabricated members, adjacent prefabricated members on the same span are connected through first ripple connecting edges, adjacent prefabricated members on the adjacent spans are connected through second ripple connecting edges, the first ripple connecting edges on the adjacent spans are in smooth transition, and the second ripple connecting edges on the adjacent prefabricated members are in smooth transition; the first ripple connecting edge and the second ripple connecting edge are respectively provided with a cushion pad, and the cushion pads are fixedly connected through connecting pieces.
Preferably, six spans are provided, and the spans are a first span, a second span, a third span, a fourth span, a fifth span and a sixth span which are equal in width and length in sequence.
Preferably, eight prefabricated parts are arranged on each span, and the eight prefabricated parts are a first prefabricated part, a second prefabricated part, a third prefabricated part, a fourth prefabricated part, a fifth prefabricated part, a sixth prefabricated part, a seventh prefabricated part and an eighth prefabricated part which are equal in width and length in sequence.
Preferably, the arc length radius of the first corrugated connecting edge is 1000mm-1100mm.
Preferably, the arc length radius of the second corrugated connecting edge is 100mm-150mm.
Preferably, the cushion pad is a rubber cushion pad, and the cushion pad is fixedly arranged on the first ripple connecting edge and the second ripple connecting edge of each prefabricated part and is tightly attached to the first ripple connecting edge and the second ripple connecting edge.
Preferably, the thickness of the buffer pad on the first corrugated connecting edge is 80mm-120mm; the thickness of the cushion pad on the second corrugated connecting edge is 40mm-60mm.
Preferably, the connecting piece is angle steel, the angle steel comprises a first connecting plate and a second connecting plate which are vertically arranged, and a triangular reinforcing plate is arranged between the first connecting plate and the second connecting plate; the first connecting plate is fixedly connected with the buffer cushion through a high-strength bolt, and the second connecting plate is fixedly connected with angle steel on the adjacent prefabricated member through a high-strength bolt.
Preferably, the first connecting plate of the connecting member has a width not greater than that of the cushion pad.
The assembled reinforced concrete T-shaped beam bridge has the advantages and positive effects that:
1. the adjacent prefabricated members of the same span are connected through the first corrugated connecting edges, and the adjacent prefabricated members of the adjacent span are connected through the second corrugated connecting edges, so that the adjacent prefabricated members can be better embedded, load transfer is facilitated, displacement of the prefabricated members is reduced, the anti-seismic performance of the bridge deck is improved, and the stability of the bridge structure is improved.
2. Set up the rubber blotter between adjacent prefab, can cushion the vertical and horizontal impact force between the adjacent T type roof beam for the bearing capacity can be fine transmit between adjacent prefab, lighten the dislocation phenomenon between the prefab, improve the bearing capacity and the life of bridge.
3. The cushion pads on the adjacent prefabricated members are connected through the angle steel, so that the connection strength of the cushion pads of the adjacent prefabricated members is improved, the adjacent cushion pads can be in close contact, the water leakage and seepage problem of the bridge is relieved, and the strength and the service life of the bridge are improved.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an assembled reinforced concrete T-bridge according to the present invention;
FIG. 2 is a schematic illustration of an M1 type precast element of an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 3 is a schematic illustration of an M2-type precast element of an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 4 is a schematic illustration of an M3-type precast element of an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 5 is a schematic illustration of an M4 type preform configuration for an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 6 is a schematic illustration of an M5-type preform structure for an embodiment of an assembled reinforced concrete T-bridge according to the present invention;
FIG. 7 is a schematic illustration of an M6 type preform configuration for an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 8 is a schematic illustration of an M7 type preform configuration of an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 9 is a schematic illustration of an M8-type preform structure for an embodiment of an assembled reinforced concrete T-bridge of the present invention;
FIG. 10 is a schematic side view of a prefabricated member of an embodiment of an assembled reinforced concrete T-bridge according to the present invention;
FIG. 11 is a schematic side view of a connector of an embodiment of a fabricated reinforced concrete T-bridge of the present invention;
fig. 12 is a schematic top view of a connector for an embodiment of an assembled reinforced concrete T-bridge according to the present invention.
Reference numerals
1. A first span; 2. a second span; 3. a third span; 4. a fourth span; 5. a fifth span; 6. a sixth span; 7. a first preform; 8. a second preform; 9. a third preform; 10. a fourth preform; 11. a fifth preform; 12. a sixth preform; 13. a seventh preform; 14. an eighth preform; 15. a first corrugated connecting edge; 16. a second corrugated connecting edge; 17. a cushion pad; 18. angle steel; 19. a first connecting plate; 20. a second connecting plate; 21. a reinforcing plate; 22. and (3) a threaded hole.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Examples
Fig. 1 is a schematic structural diagram of an embodiment of an assembled reinforced concrete T-bridge according to the present invention, and fig. 10 is a schematic structural diagram of a prefabricated member of an embodiment of an assembled reinforced concrete T-bridge according to the present invention in a side view. As shown, an assembled reinforced concrete T-beam bridge includes a plurality of spans. Six spans are arranged in the embodiment, namely a first span 1, a second span 2, a third span 3, a fourth span 4, a fifth span 5 and a sixth span 6 which are equal in width and length in sequence. The total length of the bridge is 32150mm and the length of each span is 5358mm. Each span comprises a number of preforms. In this embodiment, eight preforms are disposed on each span, and the preforms include a first preform 7, a second preform 8, a third preform 9, a fourth preform 10, a fifth preform 11, a sixth preform 12, a seventh preform 13, and an eighth preform 14, which have equal widths and lengths in order. The bridge has a width of 8000mm, each preform has a width of 1000mm, the preforms have a height of 1000mm, the flanges have a thickness of 200mm, and the ribs have a width of 200mm.
Adjacent preforms on the same span are connected by a first corrugated connecting edge 15, and adjacent preforms on the same span are connected by a second corrugated connecting edge 16. The first and second connecting edges 15, 16 on each preform are slightly different such that the first connecting edge 15 on an adjacent span transitions smoothly and the second connecting edge 16 on an adjacent preform transitions smoothly.
The arc length radius of the first corrugation connection edge 15 is 1000mm-1100mm, preferably 1047mm. The radius of the arc length of the second corrugation connection edge 16 is 100mm-150mm, preferably 125mm.
In this embodiment, there are 48 preforms, and the types of the preforms are 8, and the structures of the preforms in 8 are shown in fig. 2-9 respectively. The corresponding structure types for each preform are shown in the following table:
the first corrugated connecting edge 15 and the second corrugated connecting edge 16 are both provided with a cushion pad 17, the cushion pad 17 is a rubber cushion pad 17, and the cushion pad 17 is fixedly arranged on the first corrugated connecting edge 15 and the second corrugated connecting edge 16 of each prefabricated part and is tightly attached to the first corrugated connecting edge 15 and the second corrugated connecting edge 16. The cushion pad 17 is glued to the first and second corrugation connection edges 15, 16 and covers exactly the whole first and second corrugation connection edges 15, 16. The thickness of the cushioning pad 17 on the first bellows-type joint edge 15 is 80mm-120mm, preferably 100mm. The thickness of the cushioning pad 17 on the second corrugated connecting edge 16 is 40mm-60mm, preferably 50mm.
The rubber buffer cushion 17 is arranged between the adjacent prefabricated members, so that the longitudinal impact force and the transverse impact force between the adjacent T-shaped beams can be buffered, the bearing force can be well transferred between the adjacent prefabricated members, dislocation and dislocation between the prefabricated members are reduced, and the bearing force and the service life of the bridge are improved.
Fig. 11 is a schematic side view of a connection member of an embodiment of an assembled reinforced concrete T-shaped bridge according to the present invention, and fig. 12 is a schematic top view of a connection member of an embodiment of an assembled reinforced concrete T-shaped bridge according to the present invention. As shown, the cushion pads 17 are fixedly connected by connecting members. The connecting piece is angle steel 18, and angle steel 18 includes connecting plate one 19 and connecting plate two 20 that set up perpendicularly, is provided with triangle-shaped reinforcing plate 21 between connecting plate one 19 and the connecting plate two 20, and reinforcing plate 21 is used for strengthening angle steel 18's intensity. Screw holes 22 are formed in the first connecting plate 19 and the second connecting plate 20, the first connecting plate 19 is fixedly connected with the cushion pad 17 through high-strength bolts, and the second connecting plate 20 is fixedly connected with angle steel 18 on the adjacent prefabricated members through high-strength bolts. The width of the first web 19 of the connector is no greater than the width of the cushion 17. The cushion pads 17 on the adjacent prefabricated members are connected through the angle steel 18, so that the connection strength of the cushion pads 17 of the adjacent prefabricated members is improved, the adjacent cushion pads 17 can be in close contact, the water leakage and seepage problem of the bridge is relieved, and the strength and the service life of the bridge are improved.
In this embodiment, the width and height of the connector are 80mm and the length is 100mm.
The number and the size of spans and prefabricated members of the bridge can be adjusted according to the length and the width of the actual bridge, and the radiuses of the first ripple connecting edge and the second ripple connecting edge can also be adjusted according to the actual needs.
Therefore, the assembled reinforced concrete T-shaped bridge can solve the problem that dislocation is easy to occur between prefabricated members of the existing assembled bridge, and the service life of the bridge is influenced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (4)
1. An assembled reinforced concrete T-shaped beam bridge which is characterized in that: the device comprises a plurality of spans, wherein each span comprises a plurality of prefabricated members, adjacent prefabricated members on the same span are connected through first ripple connecting edges, adjacent prefabricated members on the adjacent spans are connected through second ripple connecting edges, the first ripple connecting edges on the adjacent spans are in smooth transition, and the second ripple connecting edges on the adjacent prefabricated members are in smooth transition; the first corrugated connecting edge and the second corrugated connecting edge are respectively provided with a buffer cushion, and the buffer cushions are fixedly connected through connecting pieces; the cushion pad is a rubber cushion pad, is fixedly arranged on the first ripple connecting edge and the second ripple connecting edge of each prefabricated part, and is tightly attached to the first ripple connecting edge and the second ripple connecting edge; the connecting piece is angle steel, the angle steel comprises a first connecting plate and a second connecting plate which are vertically arranged, and a triangular reinforcing plate is arranged between the first connecting plate and the second connecting plate; the first connecting plate is fixedly connected with the buffer cushion through a high-strength bolt, and the second connecting plate is fixedly connected with angle steel on the adjacent prefabricated member through a high-strength bolt;
six spans are arranged, namely a first span, a second span, a third span, a fourth span, a fifth span and a sixth span which are equal in width and length in sequence;
each span is provided with eight prefabricated parts, namely a first prefabricated part, a second prefabricated part, a third prefabricated part, a fourth prefabricated part, a fifth prefabricated part, a sixth prefabricated part, a seventh prefabricated part and an eighth prefabricated part which are equal in width and length in sequence;
the first corrugated connecting edge is horizontally extended in the longitudinal direction of the prefabricated part, and the second corrugated connecting edge is horizontally extended in the transverse direction of the prefabricated part;
the width of the first connecting plate of the connecting piece is not larger than the width of the buffer cushion.
2. A fabricated reinforced concrete T-beam bridge as claimed in claim 1, wherein: the arc length radius of the first ripple connecting edge is 1000mm-1100mm.
3. A fabricated reinforced concrete T-beam bridge as claimed in claim 1, wherein: the arc length radius of the second ripple connecting edge is 100mm-150mm.
4. A fabricated reinforced concrete T-beam bridge as claimed in claim 1, wherein: the thickness of the buffer pad on the first corrugated connecting edge is 80mm-120mm; the thickness of the cushion pad on the second corrugated connecting edge is 40mm-60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368100.0A CN115478468B (en) | 2022-11-03 | 2022-11-03 | Assembled reinforced concrete T-shaped beam bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368100.0A CN115478468B (en) | 2022-11-03 | 2022-11-03 | Assembled reinforced concrete T-shaped beam bridge |
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| Publication Number | Publication Date |
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| CN115478468A CN115478468A (en) | 2022-12-16 |
| CN115478468B true CN115478468B (en) | 2024-01-19 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063805A (en) * | 2006-09-07 | 2008-03-21 | Takenaka Komuten Co Ltd | Connection structure of full precast concrete slab |
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN104358215A (en) * | 2014-11-28 | 2015-02-18 | 中煤建筑安装工程集团有限公司 | Fabrication and assembly process of integrally prestressed total-assembled box type modular trestle |
| CN107190880A (en) * | 2017-06-26 | 2017-09-22 | 东南大学 | A kind of fabricated shear wall vertical abutment joint Alveolus type power consumption attachment means |
| CN107938495A (en) * | 2018-01-10 | 2018-04-20 | 李国栋 | A kind of novel fabricated prestressing force steel reinforced concrete bridge span structure |
| CN209760027U (en) * | 2019-02-18 | 2019-12-10 | 杨继承 | hollow core slab structure |
| CN214459538U (en) * | 2021-02-04 | 2021-10-22 | 长安大学 | Solid-web arch bridge system assembled by UHPC prefabricated corrugated plate segments |
| CN215714630U (en) * | 2021-09-14 | 2022-02-01 | 福州大学 | Prefabricated UHPC board-wave type steel superposed bridge floor connecting structure |
-
2022
- 2022-11-03 CN CN202211368100.0A patent/CN115478468B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008063805A (en) * | 2006-09-07 | 2008-03-21 | Takenaka Komuten Co Ltd | Connection structure of full precast concrete slab |
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN104358215A (en) * | 2014-11-28 | 2015-02-18 | 中煤建筑安装工程集团有限公司 | Fabrication and assembly process of integrally prestressed total-assembled box type modular trestle |
| CN107190880A (en) * | 2017-06-26 | 2017-09-22 | 东南大学 | A kind of fabricated shear wall vertical abutment joint Alveolus type power consumption attachment means |
| CN107938495A (en) * | 2018-01-10 | 2018-04-20 | 李国栋 | A kind of novel fabricated prestressing force steel reinforced concrete bridge span structure |
| CN209760027U (en) * | 2019-02-18 | 2019-12-10 | 杨继承 | hollow core slab structure |
| CN214459538U (en) * | 2021-02-04 | 2021-10-22 | 长安大学 | Solid-web arch bridge system assembled by UHPC prefabricated corrugated plate segments |
| CN215714630U (en) * | 2021-09-14 | 2022-02-01 | 福州大学 | Prefabricated UHPC board-wave type steel superposed bridge floor connecting structure |
Non-Patent Citations (1)
| Title |
|---|
| 李宏江 ; 李万恒 ; 赵尚传 ; 张劲泉 ; 杨昀 ; .混凝土梁式桥纵向连接构造研究进展.中外公路.2014,(06),第126-130页. * |
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| CN115478468A (en) | 2022-12-16 |
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