CN212000567U - Precast concrete bridge - Google Patents
Precast concrete bridge Download PDFInfo
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- CN212000567U CN212000567U CN201922061796.2U CN201922061796U CN212000567U CN 212000567 U CN212000567 U CN 212000567U CN 201922061796 U CN201922061796 U CN 201922061796U CN 212000567 U CN212000567 U CN 212000567U
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- precast concrete
- beam body
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 160
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 8
- 238000007788 roughening Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a bridge structures technical field, concretely relates to precast concrete bridge. A precast concrete bridge, comprising: a plurality of precast concrete beam bodies are arranged in parallel at intervals; the precast concrete slabs are arranged in parallel at intervals, at least one end of each precast concrete slab is erected on the supporting surface of the precast concrete beam body, and a gap is reserved between every two adjacent precast concrete slabs; one end of the stirrup is embedded in the precast concrete beam body, and the other end of the stirrup extends into the gap; and the concrete post-pouring layer is filled in the gap between two adjacent precast concrete plates. The split structure of the precast concrete beam body and the precast concrete slab is used for replacing a T-shaped beam, the weight of a single precast block is reduced, the hoisting difficulty of site construction is reduced, and the work efficiency of site construction is improved.
Description
Technical Field
The utility model relates to a bridge structures technical field, concretely relates to precast concrete bridge.
Background
In bridge structures in China and even all over the world, traditional precast concrete T-shaped beams and I-shaped beams are very commonly applied. In the prior art, when the traditional precast concrete beam body bridge is constructed, a method for directly and integrally hoisting the precast concrete beam body is adopted, but the hoisting is difficult due to the fact that the precast concrete beam body is heavy, and the construction efficiency is greatly influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect of the precast concrete roof beam body hoist and mount difficulty when the site operation among the prior art to a precast concrete bridge is provided.
In order to solve the technical problem, the utility model provides a precast concrete bridge, include:
a plurality of precast concrete beam bodies are arranged in parallel at intervals;
the precast concrete slabs are arranged in parallel at intervals, at least one end of each precast concrete slab is erected on the supporting surface of the precast concrete beam body, and a gap is reserved between every two adjacent precast concrete slabs;
one end of the stirrup is embedded in the precast concrete beam body, and the other end of the stirrup extends into the gap;
and the concrete post-pouring layer is filled in the gap between two adjacent precast concrete plates.
Preferably, the opposite surfaces of two adjacent precast concrete plates are provided with slotted holes, and additional steel bars are horizontally arranged in the slotted holes.
Preferably, the slotted hole is provided with an upper end penetrating the upper surface of the precast concrete panel and a lower end not penetrating the lower surface of the precast concrete panel.
Preferably, the concrete post-cast layer covers the precast concrete slab, and the stirrups extend out of the precast concrete beam body, penetrate through the gaps and extend into the concrete post-cast layer.
Preferably, the device further comprises a plurality of longitudinal ribs which are perpendicular to the stirrups.
Preferably, the top surfaces of the precast concrete panels are each formed with a napped structure and are provided with angular shear reinforcements.
Preferably, the top of the precast concrete beam body is extended outwardly toward the concrete flange away from the precast concrete beam body at a position where the top contacts the precast concrete slab.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a precast concrete bridge, precast concrete roof beam body, parallel interval is provided with a plurality ofly; the precast concrete slabs are arranged in parallel at intervals, at least one end of each precast concrete slab is erected on the supporting surface of the precast concrete beam body, and a gap is reserved between every two adjacent precast concrete slabs; one end of the stirrup is embedded in the precast concrete beam body, and the other end of the stirrup extends into the gap; and the concrete post-pouring layer is filled in the gap between two adjacent precast concrete plates. The split structure of the precast concrete beam body and the precast concrete slab is used for replacing a T-shaped beam, the weight of a single precast block is reduced, the hoisting difficulty of site construction is reduced, and the work efficiency of site construction is improved. And precast concrete board and precast concrete beam body have guaranteed holistic intensity through pre-buried in precast concrete beam body and extend to the stirrup between two adjacent precast concrete boards and fill the cooperation on the first concrete post-cast layer in the clearance.
2. The utility model provides a precast concrete bridge has all seted up the slotted hole on two adjacent precast concrete slab's the opposite face to at inslot level arrangement additional steel bar, the transverse connection performance between the reinforcing beam has overcome in traditional precast concrete T type roof beam and the I-beam concrete edge of a wing transverse connection structure difficult problems such as complicated, the construction difficulty, has improved assembled concrete bridge's efficiency of construction by a wide margin.
3. The utility model provides a precast concrete bridge, precast concrete slab's upper surface is run through to bar slotted hole upper end, and the lower extreme does not run through precast concrete slab's lower surface setting, utilizes to fill at the first concrete post-cast layer in the bar slotted hole, and the one side that is equipped with the bar slotted hole to precast concrete slab exerts pressure, reinforces precast concrete slab's stability.
4. The utility model provides a precast concrete bridge, the second concrete post-cast layer cover in precast concrete slab top, and the other end of stirrup passes and extends to the second concrete post-cast layer after the clearance in, utilizes the second concrete post-cast layer to make the whole superimposed sheet structure that forms of bridge, the overall stability of reinforcing bridge.
5. The utility model provides a precast concrete bridge, precast concrete slab's top surface all carries out the napping and handles to install angular form shear reinforcement, with the fastness of guaranteeing to water the interface bonding on layer behind precast concrete slab and the concrete.
6. The utility model provides a precast concrete bridge, precast concrete roof beam body top are equipped with towards keeping away from the flange board that precast concrete roof beam body direction extends with the position of precast concrete slab contact, increase precast concrete roof beam body to precast concrete slab's supporting length, guarantee precast concrete roof beam body to concrete slab's supporting strength.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a precast concrete bridge provided in an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a precast concrete bridge provided in an embodiment of the present invention.
Description of reference numerals: 1. prefabricating a concrete beam body; 2. longitudinal ribs; 3. hooping; 4. post-pouring concrete layer; 5. prefabricating a concrete slab; 6. a slotted hole; 7. adding a steel bar; 8. angular shear reinforcement bars; 9. and (5) napping structure.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
Fig. 1-2 show a specific embodiment of the precast concrete bridge provided in this embodiment, which includes: the precast concrete beam comprises a precast concrete beam body 1, a precast concrete plate 5, stirrups 3 and a concrete post-pouring layer 4.
The precast concrete beam body 1 is provided with two precast concrete beam bodies at parallel intervals, in order to ensure the supporting length of the precast concrete beam body 1 to the precast concrete plate 5, a flange plate which extends away from the precast concrete beam body 1 is arranged at the position where the top of the precast concrete beam body 1 is in contact with the precast concrete plate 5, and the flange plate is not arranged when the thickness of the precast concrete beam body 1 can ensure the supporting length of the precast concrete beam body 5.
The precast concrete beam comprises three precast concrete plates 5 which are arranged in parallel at intervals, wherein one ends of the precast concrete plates 5 at the outer sides of two precast concrete beam bodies 1 are erected on the supporting surfaces of the precast concrete beam bodies 1, and two ends of the precast concrete plates 5 between the two precast concrete beam bodies 1 are respectively erected on the supporting surfaces of the two opposite precast concrete beam bodies 1; all seted up slotted hole 6 on two adjacent precast concrete board 5's the opposite face, the level has arranged additional reinforcing bar 7 in the slotted hole 6. The upper end of the strip-shaped slotted hole 6 penetrates through the upper surface of the precast concrete plate 5, the lower end of the strip-shaped slotted hole is not arranged through the lower surface of the precast concrete plate 5, and the length of the bottom of the strip-shaped slotted hole 6 away from the bottom end of the precast concrete plate 5 is the thickness of a steel bar protection layer in the precast concrete plate 5. The top surfaces of the precast concrete plates 5 are all subjected to roughening treatment to form roughening structures 9, and angular shear steel bars 8 are installed on the roughening structures. A gap is reserved between two adjacent precast concrete plates 5, the additional steel bars 7 transversely penetrate through the gap between the two precast concrete plates 5, the gap is filled with a concrete post-pouring layer 4, the concrete post-pouring layer 4 covers the additional steel bars 7, so that the two precast concrete plates 5 and a precast concrete beam body 1 below the two precast concrete plates are firmly connected through the matching of the additional steel bars 7 and the concrete post-pouring layer 4, the concrete post-pouring layer 4 is poured on the top surfaces of the precast concrete plates 5, and the firmness of the integral connection is further improved.
One end of the stirrup 3 is embedded in the precast concrete beam body 1, and the other end of the stirrup extends into the concrete post-pouring layer 4 of the gap and extends into the concrete post-pouring layer 4 after penetrating through the gap, so that the precast concrete beam body 1 and the precast concrete slab 5 are connected into a whole; still pre-buried many vertical bars 2 that have in precast concrete roof beam body 1, vertical bar 2 all sets up with stirrup 3 is perpendicular, further improves internal connection's fastness.
Utilize precast concrete beam body 1 and precast concrete board 5's components of a whole that can function independently structure to replace traditional large-scale T type roof beam, reduce the weight of single prefabricated section, can greatly reduce the hoist and mount degree of difficulty of site operation for the work efficiency of site operation.
Example 2
The embodiment provides a specific implementation mode of a construction method of a precast concrete bridge, and the method comprises the following steps:
finishing the processing of the precast concrete beam body 1 in a factory, and in order to ensure the supporting length of the precast concrete beam body 1 to the precast concrete plate 5, arranging a flange plate extending towards the direction far away from the precast concrete beam body 1 at the position where the top of the precast concrete beam body 1 is contacted with the precast concrete plate 5, wherein the flange plate can be precast and molded together with the precast concrete beam body 1, and the flange plate only has a certain supporting function and does not need to be arranged too wide; if the thickness of the precast concrete girder body 1 can secure its supporting length for the precast concrete panel 5, the flange plate may not be provided. The precast concrete beam is characterized in that a stirrup 3 is arranged in the precast concrete beam body 1, and the other end of the stirrup 3 extends out of the top end of the precast concrete beam body 1.
Finishing the precast concrete plate 5 in a factory, performing a roughening treatment on the upper surface of the precast concrete plate 5 to form a roughened structure 9, and installing an angular shear reinforcement 8.
Hoisting and positioning the two precast concrete beam bodies 1 to a preset position, erecting the end parts of the precast concrete plates 5 on the supporting surface of the precast concrete beam bodies 1, and reserving a gap between every two adjacent precast concrete plates 5; horizontally arranging additional steel bars 7 in the slotted holes 6 on the opposite surfaces of the precast concrete plates 5; and binding and installing stressed steel bars on the top surface of the precast concrete plate 5.
And filling concrete into the gap between two adjacent precast concrete plates 5 to form a concrete post-cast layer 4. And pouring concrete on the top surface of the precast concrete plate 5 to form a concrete post-pouring layer 4.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. A precast concrete bridge, comprising:
a plurality of precast concrete beam bodies (1) are arranged in parallel at intervals;
the precast concrete beam comprises precast concrete plates (5), wherein a plurality of precast concrete plates (5) are arranged in parallel at intervals, at least one end of each precast concrete plate (5) is erected on a supporting surface of the precast concrete beam body (1), and a gap is reserved between every two adjacent precast concrete plates (5);
one end of the stirrup (3) is embedded in the precast concrete beam body (1), and the other end of the stirrup extends into the gap;
and the concrete post-pouring layer (4) is filled in the gap between two adjacent precast concrete plates (5).
2. The precast concrete bridge according to claim 1, characterized in that the opposite faces of two adjacent precast concrete plates (5) are provided with slotted holes (6), and additional steel bars (7) are horizontally arranged in the slotted holes (6).
3. Precast concrete bridge according to claim 2, characterized in that the slotted hole (6) is provided with an upper end penetrating the upper surface of the precast concrete plate (5) and a lower end not penetrating the lower surface of the precast concrete plate (5).
4. The precast concrete bridge according to claim 3, wherein a concrete post-cast layer (4) is covered above the precast concrete plate (5), and the stirrups (3) extend out of the precast concrete beam body (1) through the gap and into the concrete post-cast layer (4).
5. Precast concrete bridge according to claim 4, characterized in that it further comprises a plurality of longitudinal bars (2) arranged perpendicular to the stirrups (3).
6. Precast concrete bridge according to claim 5, characterized in that the top surface of the precast concrete slab (5) is formed with a napped structure (9) and is fitted with angular shear reinforcement (8).
7. The precast concrete bridge according to any one of claims 1 to 6, wherein a position where the top of the precast concrete beam body (1) is in contact with the precast concrete plate (5) is outwardly extended toward a concrete flange away from the precast concrete beam body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922061796.2U CN212000567U (en) | 2019-11-25 | 2019-11-25 | Precast concrete bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922061796.2U CN212000567U (en) | 2019-11-25 | 2019-11-25 | Precast concrete bridge |
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| Publication Number | Publication Date |
|---|---|
| CN212000567U true CN212000567U (en) | 2020-11-24 |
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| CN201922061796.2U Active CN212000567U (en) | 2019-11-25 | 2019-11-25 | Precast concrete bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886181A (en) * | 2019-11-25 | 2020-03-17 | 清华大学 | Precast concrete bridge and construction method thereof |
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2019
- 2019-11-25 CN CN201922061796.2U patent/CN212000567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886181A (en) * | 2019-11-25 | 2020-03-17 | 清华大学 | Precast concrete bridge and construction method thereof |
| CN110886181B (en) * | 2019-11-25 | 2024-08-06 | 清华大学 | Precast concrete bridge and construction method thereof |
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