CN103194964B - Novel seamless bridge structure adopting swing beam and construction method for novel seamless bridge structure - Google Patents
Novel seamless bridge structure adopting swing beam and construction method for novel seamless bridge structure Download PDFInfo
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- CN103194964B CN103194964B CN201310149773.1A CN201310149773A CN103194964B CN 103194964 B CN103194964 B CN 103194964B CN 201310149773 A CN201310149773 A CN 201310149773A CN 103194964 B CN103194964 B CN 103194964B
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- balance arm
- terminal plate
- attachment strap
- seamless bridge
- swing beam
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Abstract
The invention relates to a novel seamless bridge structure adopting a swing beam. The novel seamless bridge structure adopting the swing beam comprises a main beam, a butt strap, the swing beam and a wiring board, wherein the butt strap, the swing beam and the wiring board form an integrally-poured Z-shaped reinforced concrete structure; the main beam and the butt strap are integrally connected via a connecting steel bar; the butt strap is arranged on a base layer; expansion joints convenient for the swing beam to swing to the left and right are arranged at the both sides of the swing beam respectively; the base layer is arranged at the upper side of the wiring board; a cushion layer is arranged at the lower side of the wiring board; and surface layers are paved on the main beam, the butt strap, the swing beam and the base layer. The invention further relates to a construction method for the novel seamless bridge structure adopting the swing beam. The novel seamless bridge structure adopting the swing beam disclosed by the invention is used for realizing the longitudinal deformation of the body of a bridge by virtue of the free swing of the swing beam, and ensuring the gradual rigidity change of a driving road from the body, the butt strap and the wiring board to a roadbed, thus improving driving comfort; and the novel seamless bridge structure adopting the swing beam is especially suitable for integrated-type or semi-integrated-type seamless bridges with middle or small spans.
Description
Technical field
The present invention relates to technical field of civil, especially a kind of seamless bridge neotectonics and construction method thereof adopting balance arm.
Background technology
The jumping car that bridge expanssion joint brings and bring because shrinkage joint damages secondary adverse effect (as structure additional internal force, leak to the corrosion etc. of structure) thorny problem that to be current domestic and abroad bridge often can run in reality operation.The bumping at bridge-head that end of the bridge causes due to stretching device not only causes very large percussion to bridge and road surface, but also can reduce the driving comfort level of driver and passenger.In addition, along with the increase day by day of the magnitude of traffic flow, with replacing, serious interruption of communication is often caused to the maintenance of expansion gap device, and then produces huge economic loss.As can be seen here, the series of problems that solution bridge expanssion joint brings has been imperative.
Dealt with problems in shrinkage joint at present, usually have following two kinds of thinkings: one is improvement stretching device.Current stretching device type is a lot, and its application life is generally within 5 years, but improvement stretching device, thoroughly do not eliminate maintenance and the problem of replacing of stretching device, so improvement stretching device is cured the symptoms, not the disease.Two is the problems fundamentally solving stretching device, by reducing deck expansion installation or cancelling bridge extension joint.For large, jackshaft, the general method adopting minimizing stretching device, increases the continuous length of spanning; For in, foot bridge, then the method by fully phasing out stretching device realize bridge completely without seam.
Seamless bridge is a kind of structure by adopting the overall and mode such as semi-monolithic abutment, continuous print spanning to eliminate the whole stretching device of bridge, and the road and bridge seam construction after stroke dependence monolithic (or the semi-monolithic formula) abutment that beam body produces due to temperature deformation and platform is absorbed.Compare with general band shrinkage joint bridge, seamless bridge can reduce construction and the maintenance cost of bridge, simplifies the construction of bridge, improves the rideability of bridge, improves durability and the anti-seismic performance of bridge.
Summary of the invention
The present invention is directed to above-mentioned prior art Problems existing and make improvement, namely technical problem to be solved by this invention is to provide a kind of seamless bridge neotectonics and the construction method thereof that adopt balance arm.
In order to solve the problems of the technologies described above, technical scheme one of the present invention is: a kind of seamless bridge neotectonics adopting balance arm, comprise girder, attachment strap, balance arm and terminal plate, described attachment strap, balance arm and terminal plate are the Z bar tendon concrete structure of a monobloc cast, linked into an integrated entity by connecting reinforcement between described girder and attachment strap, described attachment strap is arranged in basic unit, described balance arm both sides are respectively arranged with the expansion joint (E.J.) be convenient to balance arm together and swung, basic unit is provided with on the upside of described terminal plate, bed course is provided with on the downside of described terminal plate, described girder, attachment strap, balance arm and basic unit are equipped with surface layer.
In order to solve the problems of the technologies described above, technical scheme two of the present invention is: a kind of construction method adopting the seamless bridge neotectonics of balance arm, carries out according to the following steps:
(1) construction bridges superstructure, ensures that its curing time must not lower than 15 days to make bridge beam body concrete early-age shrinkage and completing of creeping;
(2) soil body after excavation abutment;
(3) basic unit on the downside of attachment strap and the bed course on the downside of terminal plate is laid;
(4) reinforcing bar of colligation attachment strap, balance arm and terminal plate, and by integrally welded for the vertical muscle of the connecting reinforcement of girder and attachment strap, then build the concrete of attachment strap, balance arm and terminal plate simultaneously, make attachment strap, balance arm, terminal plate and girder form an entirety, the expansion joint (E.J.) be convenient to balance arm together and swung is set respectively in balance arm both sides;
(5) basic unit on the upside of terminal plate is laid;
(6) overall laying surface layer, completes full-bridge construction.
Compared with prior art, the present invention has following beneficial effect: the seamless bridge neotectonics of this employing balance arm utilizes the longitudinal strain freely swinging to realize bridge beam body of balance arm, its build-in by terminal plate not only can ensure the anchorage effect of terminal plate to balance arm, but also attachment strap and balance arm can be eliminated on the impact of follow-up prevailing roadway, ensure carriage way by beam body, attachment strap, terminal plate to the rigidity gradual change of roadbed, improve driving comfort, be specially adapted to Mid and minor spans monolithic or semi-monolithic formula seamless bridge.
Accompanying drawing explanation
Fig. 1 is the organigram of the embodiment of the present invention.
In figure: 1-girder, 2-abutment, 3-attachment strap, 4-balance arm, 5-terminal plate, 6-basic unit, 7-bed course, 8-expansion joint (E.J.), 9-connecting reinforcement, 10-surface layer.
Detailed description of the invention
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.
As shown in Figure 1, a kind of seamless bridge neotectonics adopting balance arm, comprise girder 1, attachment strap 3, balance arm 4 and terminal plate 5, described attachment strap 3, balance arm 4 and terminal plate 5 are the Z bar tendon concrete structure of a monobloc cast, namely the upper end of balance arm 4 is connected with attachment strap 3, lower end is connected with terminal plate 5, linked into an integrated entity by connecting reinforcement 9 between described girder 1 and attachment strap 3, described attachment strap 3 is arranged in basic unit 6, described balance arm 4 both sides are respectively arranged with the expansion joint (E.J.) 8 be convenient to balance arm 4 together and swung, basic unit 6 is provided with on the upside of described terminal plate 5, bed course 7 is provided with on the downside of described terminal plate 5, described girder 1, attachment strap 3, balance arm 4 and basic unit 6 are equipped with surface layer 10.
In the present embodiment, the seamless bridge neotectonics of this employing balance arm by being covered with bed course 7 for 5 times at terminal plate, being pressed with the build-in that basic unit 6 can ensure terminal plate 5 on terminal plate 5, thus realizes the anchorage effect of terminal plate 5 pairs of balance arms 4.
In the present embodiment, described balance arm 4 is rods structure, and described balance arm 4 only arranges in its kernel of section place configuration one muscle of being advocated; Bitumastic and oil immersion fiberboard etc. is filled with in described expansion joint (E.J.) 8; Described surface layer 10 is asphalt concrete layer.
As shown in Figure 1, a kind of construction method adopting the seamless bridge neotectonics of balance arm, carry out according to the following steps:
(1) construction bridges superstructure (structure namely more than abutment more than 2 or girder 1 bottom line), ensures that its curing time must not lower than 15 days to make bridge beam body concrete early-age shrinkage and completing of creeping;
(2) the rear soil body of abutment 2 is excavated;
(3) basic unit 6 on the downside of attachment strap 3 and the bed course 7 on the downside of terminal plate 5 is laid;
(4) reinforcing bar of colligation attachment strap 3, balance arm 4 and terminal plate 5, and by integrally welded with the vertical muscle of attachment strap 3 for the connecting reinforcement 9 of girder 1, then build the concrete of attachment strap 3, balance arm 4 and terminal plate 5 simultaneously, make attachment strap 3, balance arm 4, terminal plate 5 form an entirety with girder 1, the expansion joint (E.J.) 8 be convenient to balance arm 4 together and swung is set respectively in balance arm 4 both sides;
(5) basic unit 6 on the upside of terminal plate 5 is laid;
(6) overall (i.e. full-bridge face and road pavement) lays surface layer 10, completes full-bridge construction.
In step (4), described balance arm 4 is rods structure, and described balance arm 4 only arranges in its kernel of section place configuration one muscle of being advocated; Bitumastic and oil immersion fiberboard is filled with in described expansion joint (E.J.) 8.In step (6), described surface layer 10 is asphalt concrete layer.
The present invention does not limit to above-mentioned preferred forms, and anyone can draw the seamless bridge neotectonics of other various forms of employing balance arms under enlightenment of the present invention.All equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. one kind adopts the seamless bridge neotectonics of balance arm, it is characterized in that: comprise girder, attachment strap, balance arm and terminal plate, described attachment strap, balance arm and terminal plate are the Z bar tendon concrete structure of a monobloc cast, described balance arm is rods structure, described balance arm only arranges in its kernel of section place configuration one muscle of being advocated, linked into an integrated entity by connecting reinforcement between described girder and attachment strap, described attachment strap is arranged in basic unit, described balance arm both sides are respectively arranged with the expansion joint (E.J.) be convenient to balance arm together and swung, basic unit is provided with on the upside of described terminal plate, bed course is provided with on the downside of described terminal plate, described girder, attachment strap, balance arm and basic unit are equipped with surface layer.
2. a kind of seamless bridge neotectonics adopting balance arm according to claim 1, is characterized in that: be filled with bitumastic and oil immersion fiberboard in described expansion joint (E.J.).
3. a kind of seamless bridge neotectonics adopting balance arm according to claim 1, is characterized in that: described surface layer is asphalt concrete layer.
4. adopt a construction method for the seamless bridge neotectonics of balance arm, it is characterized in that, carry out according to the following steps:
(1) construction bridges superstructure, ensures that its curing time must not lower than 15 days to make bridge beam body concrete early-age shrinkage and completing of creeping;
(2) soil body after excavation abutment;
(3) basic unit on the downside of attachment strap and the bed course on the downside of terminal plate is laid;
(4) reinforcing bar of colligation attachment strap, balance arm and terminal plate, and by integrally welded for the vertical muscle of the connecting reinforcement of girder and attachment strap, then build the concrete of attachment strap, balance arm and terminal plate simultaneously, make attachment strap, balance arm, terminal plate and girder form an entirety, the expansion joint (E.J.) be convenient to balance arm together and swung is set respectively in balance arm both sides;
(5) basic unit on the upside of terminal plate is laid;
(6) overall laying surface layer, completes full-bridge construction.
5. a kind of construction method adopting the seamless bridge neotectonics of balance arm according to claim 4, it is characterized in that: in step (4), described balance arm is rods structure, and described balance arm only arranges in its kernel of section place configuration one muscle of being advocated.
6. a kind of construction method adopting the seamless bridge neotectonics of balance arm according to claim 4, is characterized in that: in step (4), is filled with bitumastic and oil immersion fiberboard in described expansion joint (E.J.).
7. a kind of construction method adopting the seamless bridge neotectonics of balance arm according to claim 5, it is characterized in that: in step (6), described surface layer is asphalt concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149773.1A CN103194964B (en) | 2013-04-26 | 2013-04-26 | Novel seamless bridge structure adopting swing beam and construction method for novel seamless bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149773.1A CN103194964B (en) | 2013-04-26 | 2013-04-26 | Novel seamless bridge structure adopting swing beam and construction method for novel seamless bridge structure |
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| Publication Number | Publication Date |
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| CN103194964A CN103194964A (en) | 2013-07-10 |
| CN103194964B true CN103194964B (en) | 2015-07-01 |
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| CN201310149773.1A Expired - Fee Related CN103194964B (en) | 2013-04-26 | 2013-04-26 | Novel seamless bridge structure adopting swing beam and construction method for novel seamless bridge structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104878687B (en) * | 2015-06-16 | 2016-06-15 | 厦门理工学院 | Semi-monolithic formula is seamless, and Ramp bridge end of the bridge constructs |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067297A (en) * | 1990-11-20 | 1991-11-26 | Watson Bowman Acme Corp. | Expansion-joint cover assemblies |
| EP0631017A1 (en) * | 1993-06-24 | 1994-12-28 | T.I.S. S.p.A. | Great clearance road joint for bridges and viaducts |
| CN101440602A (en) * | 2008-12-19 | 2009-05-27 | 湖南大学 | Structure of continuously reinforced link road pavement for seamless bridge |
| CN102660922A (en) * | 2012-05-17 | 2012-09-12 | 四川成渝高速公路股份有限公司成仁分公司 | Seamless bridge deck expansion joint structure for road engineering and construction process of seamless bridge deck expansion joint structure |
| CN202450439U (en) * | 2012-05-17 | 2012-09-26 | 四川成渝高速公路股份有限公司成仁分公司 | Expansion joint structure of seamless bridge in road engineering |
| CN203256597U (en) * | 2013-04-26 | 2013-10-30 | 福州大学 | Novel seamless bridge structure comprising swing beam |
-
2013
- 2013-04-26 CN CN201310149773.1A patent/CN103194964B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067297A (en) * | 1990-11-20 | 1991-11-26 | Watson Bowman Acme Corp. | Expansion-joint cover assemblies |
| EP0631017A1 (en) * | 1993-06-24 | 1994-12-28 | T.I.S. S.p.A. | Great clearance road joint for bridges and viaducts |
| CN101440602A (en) * | 2008-12-19 | 2009-05-27 | 湖南大学 | Structure of continuously reinforced link road pavement for seamless bridge |
| CN102660922A (en) * | 2012-05-17 | 2012-09-12 | 四川成渝高速公路股份有限公司成仁分公司 | Seamless bridge deck expansion joint structure for road engineering and construction process of seamless bridge deck expansion joint structure |
| CN202450439U (en) * | 2012-05-17 | 2012-09-26 | 四川成渝高速公路股份有限公司成仁分公司 | Expansion joint structure of seamless bridge in road engineering |
| CN203256597U (en) * | 2013-04-26 | 2013-10-30 | 福州大学 | Novel seamless bridge structure comprising swing beam |
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