CN111172867A - Unit type bridge expansion device and installation method thereof - Google Patents
Unit type bridge expansion device and installation method thereof Download PDFInfo
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- CN111172867A CN111172867A CN202010194476.9A CN202010194476A CN111172867A CN 111172867 A CN111172867 A CN 111172867A CN 202010194476 A CN202010194476 A CN 202010194476A CN 111172867 A CN111172867 A CN 111172867A
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- expansion joint
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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Abstract
The invention provides a unit type bridge expansion device, which comprises a plurality of sections of bridge main body structures, wherein a plurality of sections of expansion joints are arranged between adjacent bridge main body structures, an embedded steel plate is horizontally arranged in each bridge column body structure, a plurality of embedded steel bars are arranged below the embedded steel plates, an expansion device is arranged above the side, close to the expansion joints, of the embedded steel plates, the expansion device comprises special-shaped steel, embedded bolts penetrating through the special-shaped steel and the embedded steel plates are arranged above the special-shaped steel, a rubber water stop strip is arranged between the two special-shaped steel, an expansion joint reserved groove is arranged on each special-shaped steel, and a high-strength low-shrinkage concrete layer is filled in each expansion joint reserved groove.
Description
Technical Field
The invention relates to a unit bridge expansion device and an installation method thereof.
Background
The bridge expansion device is a weak link of bridge engineering, the service life of the bridge expansion device is greatly shorter than the design life of a bridge structure, and the bridge expansion device is a part frequently maintained in the bridge engineering. Research shows that the occurrence of diseases at the expansion joints of the bridge is mainly caused by poor construction quality, and comprises the following steps:
(1) the number of embedded steel bars at the expansion joint is large, the structure is unreasonable, and the binding is difficult, so that the binding of the steel bars does not meet the standard requirement;
(2) the concrete at the expansion joint is not compacted by vibration, and the concrete strength cannot meet the design requirement. When the expansion joint of the bridge is partially damaged, the whole expansion joint needs to be replaced, so that the economical efficiency is poor and the traffic is influenced.
Disclosure of Invention
The invention improves the problems, namely the invention aims to provide a unit type bridge expansion device and an installation method thereof, and the unit type bridge expansion device is simple in structure and high in strength.
The specific embodiment of the invention is as follows: the utility model provides a unit-type bridge telescoping device, includes multistage bridge major structure, is provided with the multistage expansion joint between the adjacent bridge major structure, and the inside level of every bridge column structure is provided with pre-buried steel sheet, pre-buried steel sheet below is provided with the pre-buried reinforcing bar of a plurality of, and the pre-buried steel sheet is close to the side top at expansion joint and is provided with the telescoping device, the telescoping device includes the deformed steel, the deformed steel top is provided with the pre-buried bolt that runs through deformed steel and pre-buried steel sheet, is equipped with the rubber waterstop between two deformed steel, is equipped with the expansion joint reserve tank on every deformed steel, the expansion joint reserve tank intussusepti.
Furthermore, a groove for installing and fixing the rubber water stop is arranged at the upper side part of each special-shaped steel.
Furthermore, the special-shaped steel is provided with a plurality of stiffening plates at intervals along the length direction of the special-shaped steel, and the stiffening plates are arranged in the expansion joint reserved groove.
Furthermore, a plurality of studs are uniformly arranged above the embedded steel plate.
Furthermore, protruding positions of four corners of the rubber water stop respectively extend into grooves of the two special-shaped steels on two sides, and two cavities are further formed in the rubber water stop so that the bridge can stretch out and draw back.
Further, the installation method of the unit type bridge expansion device comprises the following steps: (1) firstly, welding embedded steel bars below an embedded steel plate, and welding studs and embedded bolts on the upper surface of the embedded steel plate to form an integral body; (2) before the concrete of the main bridge structure is initially set, inserting the embedded steel bars on the embedded steel plates into the concrete of the main bridge structure downwards; (3) installing a multi-section telescopic device on an embedded steel plate, namely, sleeving the openings on the multi-section special-shaped steel in alignment with embedded bolts, and locking nuts to fix the special-shaped steel above the embedded steel plate; (4) filling a high-strength low-shrinkage concrete layer in the expansion joint reserved groove; (5) the rubber waterstop is arranged at the expansion joint between the two special-shaped steels, the four-corner bulges of the rubber waterstop respectively extend into the grooves on the side parts of the special-shaped steels on the two sides, and the middle part of the rubber waterstop is provided with a cavity so that the bridge can stretch out and draw back.
Compared with the prior art, the invention has the following beneficial effects: this device simple structure, reasonable in design, the construction is simple and convenient, convenient change, and intensity is high, and construction quality is good, and the economical strong and reduction traffic influence has the practicality.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of an embodiment of the present invention.
In the figure: the method comprises the following steps of 1-bridge main body structure, 2-embedded steel bars, 3-embedded steel plates, 4-expansion devices, 41-deformed steel bars, 5-studs, 6-embedded bolts, 61-nuts, 7-high-strength low-shrinkage concrete layer, 8-rubber waterstops, 9-expansion joints, 10-stiffening plates and 11-expansion joint reserved grooves.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): as shown in fig. 1-2, a unit-type bridge telescoping device is provided, including multistage bridge major structure 1, be provided with expansion joint 9 between the adjacent bridge major structure, the inside level of every bridge column structure is provided with pre-buried steel sheet 3, pre-buried steel sheet 3 below is provided with a plurality of embedded steel bar 2 perpendicularly, and pre-buried steel sheet 3 is close to the side top at expansion joint and is provided with telescoping device 4, telescoping device 4 includes deformed steel 41, the 41 top of deformed steel is provided with the buried bolt 6 that runs through deformed steel and pre-buried steel sheet, is equipped with rubber waterstop 8 between two deformed steel 41, and every deformed steel top is equipped with expansion joint reserve tank 11, the expansion joint reserve tank intussuseption is filled with high strength low shrinkage concrete layer 7.
In this embodiment, adjacent multistage bridge major structure and telescoping device, pre-buried steel sheet, pre-buried reinforcing bar symmetry set up.
In this embodiment, buried bolt 6 can also weld in buried steel plate upper surface in advance, has the trompil that is used for wearing to establish buried bolt in advance on the dysmorphism steel, and the trompil size is a bit bigger than buried bolt in advance size, aligns and embolias buried bolt in the trompil of dysmorphism steel, and reuse nut locking fixes the dysmorphism steel on buried steel plate in advance.
In this embodiment, the cross section of the deformed steel may be L-shaped.
In this embodiment, a groove for installing and fixing the rubber water stop is provided on the upper side of each deformed steel 41.
In this embodiment, the special-shaped steel 41 is provided with a plurality of stiffening plates 10 at intervals along the length direction of the special-shaped steel, and the stiffening plates are arranged in the expansion joint reserved groove.
In this embodiment, a plurality of studs 10 are uniformly arranged above the embedded steel plate.
In this embodiment, 8 four corners protruding positions of rubber waterstop stretch into the recess of two special-shaped steels of both sides respectively in, rubber waterstop inside still is equipped with two cavitys to the bridge is flexible.
In the embodiment, during installation, the embedded steel plate 3 and the embedded steel bar 2 positioned below the embedded steel plate are welded, and the stud 5 and the embedded bolt 6 are welded on the upper surface of the embedded steel plate; inserting embedded steel bars before initial setting of the bridge main body structure concrete; sleeving a telescopic device on the embedded steel plate, specifically, sleeving and fixing an opening on the special-shaped steel to align with an embedded bolt, and locking a nut 61; and filling a high-strength low-shrinkage concrete layer 7 in the reserved groove of the expansion joint, and finally installing a rubber water stop 8 at the expansion joint between the two special-shaped steels. The invention has the advantages of simple structure, reasonable design, simple and convenient construction, convenient replacement, high strength, good construction quality, strong economy, reduced traffic influence and practicability.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a unit type bridge telescoping device, a serial communication port, including multistage bridge major structure, be provided with the multistage expansion joint between the adjacent bridge major structure, the inside level of bridge column structure is provided with pre-buried steel sheet, pre-buried steel sheet below is provided with the pre-buried reinforcing bar of a plurality of, and the side top that pre-buried steel sheet is close to the expansion joint is provided with the telescoping device, the telescoping device includes the deformed steel, the deformed steel top is provided with the pre-buried bolt that runs through deformed steel and pre-buried steel sheet, is equipped with the rubber waterstop between two deformed steel, is equipped with the expansion joint reservation groove on every deformed steel, the expansion joint reservation inslot intussusepti.
2. The telescopic device for a unit bridge of claim 1, wherein each of the shaped steel bars has a groove at the upper side for installing and fixing a rubber water stop.
3. The unit type bridge expansion device of claim 2, wherein a plurality of stiffening plates are arranged at intervals along the length direction of the deformed steel, and the stiffening plates are arranged in the expansion joint reserved groove.
4. The unit bridge expansion device of claim 3, wherein a plurality of studs are uniformly arranged above the embedded steel plate.
5. The unit type bridge expansion device of claim 1, wherein the four corners of the rubber water stop are protruded into the two grooves of the two deformed steel bars at two sides, and two cavities are arranged inside the rubber water stop so as to facilitate the expansion of the bridge.
6. A method of installing a modular bridge expansion device according to claim 4, comprising the steps of: (1) firstly, welding embedded steel bars below an embedded steel plate, and welding studs and embedded bolts on the upper surface of the embedded steel plate to form an integral body; (2) before the concrete of the main bridge structure is initially set, inserting the embedded steel bars on the embedded steel plates into the concrete of the main bridge structure downwards; (3) installing a multi-section telescopic device on an embedded steel plate, namely, sleeving the openings on the multi-section special-shaped steel in alignment with embedded bolts, and locking nuts to fix the special-shaped steel above the embedded steel plate; (4) filling a high-strength low-shrinkage concrete layer in the expansion joint reserved groove; (5) the rubber waterstop is arranged at the expansion joint between the two special-shaped steels, the four-corner bulges of the rubber waterstop respectively extend into the grooves on the side parts of the special-shaped steels on the two sides, and the middle part of the rubber waterstop is provided with a cavity so that the bridge can stretch out and draw back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194476.9A CN111172867A (en) | 2020-03-19 | 2020-03-19 | Unit type bridge expansion device and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194476.9A CN111172867A (en) | 2020-03-19 | 2020-03-19 | Unit type bridge expansion device and installation method thereof |
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| CN111172867A true CN111172867A (en) | 2020-05-19 |
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| CN202010194476.9A Pending CN111172867A (en) | 2020-03-19 | 2020-03-19 | Unit type bridge expansion device and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026549A (en) * | 2021-04-09 | 2021-06-25 | 天津桥通科技发展有限公司 | Novel embedded unit type multidirectional displacement bridge expansion device with ultra-long service life |
-
2020
- 2020-03-19 CN CN202010194476.9A patent/CN111172867A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026549A (en) * | 2021-04-09 | 2021-06-25 | 天津桥通科技发展有限公司 | Novel embedded unit type multidirectional displacement bridge expansion device with ultra-long service life |
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Address after: 350108 No.1, Gaoxin Avenue, high tech Zone, Minhou County, Fuzhou City, Fujian Province Applicant after: Fuzhou planning and Design Institute Group Co.,Ltd. Address before: 350108 No.1, Gaoxin Avenue, high tech Zone, Minhou County, Fuzhou City, Fujian Province Applicant before: FUZHOU PLANNING DESIGN & Research Institute |
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