CN112211088A - Single-span integral seamless bridge structure adopting steel box combination beam and construction method - Google Patents
Single-span integral seamless bridge structure adopting steel box combination beam and construction method Download PDFInfo
- Publication number
- CN112211088A CN112211088A CN202011199123.4A CN202011199123A CN112211088A CN 112211088 A CN112211088 A CN 112211088A CN 202011199123 A CN202011199123 A CN 202011199123A CN 112211088 A CN112211088 A CN 112211088A
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- box girder
- abutment
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 110
- 239000010959 steel Substances 0.000 title claims abstract description 110
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
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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
- 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
-
- 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
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种采用钢箱组合梁的单跨整体式无缝桥梁结构及施工方法，包括钢箱梁、混凝土桥面板、柔性桩基础、桥台和台后结构，钢箱梁的顶板通过桥面板连接系统与混凝土桥面板连接成整体，所述钢箱梁桥台连接系统伸入桥台内并与桥台浇筑为一体；所述台后结构一端与桥台浇筑连接，另一侧填埋于土中。除了具有传统无缝桥梁的优点，本发明采用钢箱组合梁既减轻了结构自重，从而使桥梁具有更好的抗震性能，可以使桥梁适用跨径进一步增大，同时又降低了结构高度，增加了桥下净空。桥台连接系统受力合理，能有效保证主梁与桥台的无缝连接。施工方面，钢箱组合梁架设速度快，成桥精度高，不影响桥下既有交通，特别适用于跨线桥。
The invention discloses a single-span integral seamless bridge structure and a construction method using steel box composite beams. The bridge deck connection system is connected with the concrete bridge deck as a whole, and the steel box girder abutment connection system extends into the abutment and is poured into the bridge abutment; one end of the abutment structure is connected with the bridge abutment for pouring, and the other side is filled with Buried in the soil. In addition to the advantages of traditional seamless bridges, the use of steel box composite beams in the present invention not only reduces the self-weight of the structure, so that the bridge has better seismic performance, can further increase the applicable span of the bridge, and at the same time reduces the height of the structure. Clearance under the bridge. The abutment connection system has reasonable stress, which can effectively ensure the seamless connection between the main beam and the abutment. In terms of construction, the steel box composite girder is fast in erection, and the bridge is completed with high precision, which does not affect the existing traffic under the bridge, and is especially suitable for flyover bridges.
Description
Technical Field
The invention belongs to the technical field of traffic engineering, relates to highway, municipal road, railway and rail traffic engineering, and particularly relates to a single-span integral seamless bridge structure adopting a steel box composite beam and a construction method.
Background
In the traditional design of highway and railway bridges, the bridge body is generally simply supported on an abutment and a pier through a support, and is provided with expansion joints so as to adapt to the expansion change of the length of the bridge body caused by day and night and seasonal temperature changes. However, these supports and expansion joints are susceptible to corrosion damage and plugging, require frequent repair and maintenance, and are increasingly of high concern for their disadvantages.
The seamless bridge is a new bridge type, and the integral seamless bridge is the most important structural form, and the bridge body, the abutment and the bridge pier are cast in place rigidly into a whole, so that the support and the expansion joint in the traditional bridge design are eliminated, the maintenance and repair problems caused by the support and the expansion joint in the long-term operation stage are fundamentally avoided, and the whole life cycle cost of the bridge can be obviously reduced. Because the seamless bridge has the advantages, the seamless bridge is greatly valued and popularized in the United states and Europe in the last two decades, and is also applied to the maintenance and reinforcement of new bridges and old bridges in China.
The traditional integral seamless bridge adopts a reinforced concrete girder, and the girder has great weight, high beam height and long construction period, so that the span and application range of the traditional seamless bridge are limited particularly for a strong earthquake area and a bridge spanning the existing line, and therefore the seamless bridge with better earthquake resistance, larger bridge span and larger gap under the bridge is necessary.
Disclosure of Invention
The invention provides a single-span integral seamless bridge structure adopting a steel box composite beam and a construction method. The main beam of the structure adopts the steel box composite beam, so that the dead weight of the structure is reduced, the bridge has better anti-seismic performance, the applicable span of the bridge is further increased, the structure height is reduced, the clearance under the bridge is increased, the bridge forming precision is high, and the existing traffic under the bridge is not influenced.
The invention is realized by the following technical scheme:
a single-span integral seamless bridge structure adopting a steel box composite beam comprises the steel box beam, a concrete bridge deck, an abutment, a post-abutment structure and a flexible pile foundation, wherein the steel box beam is arranged between the abutments, the flexible pile foundation is connected below the abutment, the post-abutment structure is arranged on the abutment, and the concrete bridge deck is connected on the steel box beam; the steel box girder consists of a stressed member, a stiffening system and a connecting system, wherein the stressed member comprises a steel box girder top plate, a steel box girder bottom plate and a steel box girder web plate, the steel box girder top plate and the steel box girder bottom plate are connected through the steel box girder web plate, the stiffening system comprises a steel box girder diaphragm plate, a steel box girder bottom plate stiffening rib and a steel box girder web plate stiffening rib, the connecting system comprises a bridge deck connecting system and a bridge abutment connecting system, the bridge deck connecting system is a shear nail connecting piece longitudinally arranged on the steel box girder top plate, and the bridge abutment connecting system comprises a shear nail connecting piece vertically arranged on the steel box girder web plate, a shear nail connecting piece transversely arranged on the steel box girder bottom plate, a steel plate connecting piece with a hole formed in the bottom of the steel box girder and a steel plate connecting piece with a hole formed in the end part; the steel box girder top plate is connected with the concrete bridge deck plate into a whole through a bridge deck plate connecting system, and the bridge abutment connecting system extends into the bridge abutment and is integrally cast with the bridge abutment; one end of the abutment rear structure is connected with the abutment in a pouring mode, and the other side of the abutment rear structure is buried in soil.
Furthermore, the steel box girder is an open or closed steel box girder, and the number of the steel box girders is one or more than one according to the actual bridge width.
Furthermore, the steel box girder adopts a side height girder, and the height of the girder changes according to a quadratic parabola.
Further, the concrete bridge deck is a prefabricated member or a cast-in-place member.
Furthermore, one end of the abutment rear structure is connected with the abutment through cast-in-place pouring.
The invention also provides a construction method applying the structure, which comprises the following steps:
(1) preprocessing a steel box girder in a factory;
(2) constructing a flexible pile foundation;
(3) binding the pile cap reinforcement cage, and pouring pile cap concrete;
(4) installing a steel main beam;
(5) binding a bridge abutment reinforcement framework, and pouring bridge abutment concrete;
(6) and pouring bridge deck concrete.
Compared with the prior art, the invention has the following advantages:
(1) the steel box composite beam structure is adopted, so that the self weight is small, and the anti-seismic performance is good;
(2) the steel box composite beam structure is adopted, the building height is low, and the steel box composite beam structure is suitable for a working point with clearance requirement under a bridge;
(3) the steel box composite beam structure is adopted, the forming precision is high, the construction is simple, convenient and quick, the traffic under the bridge is not interfered, and the steel box composite beam structure is suitable for the overpass bridge.
Drawings
FIG. 1 is a schematic view of the internal structure of a steel box girder according to the present invention;
FIG. 2 is a detailed structural view of the bridge end abutment connection system of the present invention;
FIG. 3 is a detail view of a bridge end section of the present invention;
FIG. 4 is an elevation view of a bridge of the present invention;
FIG. 5 is a cross-sectional view of a bridge of the present invention.
The labels in the figures are: 1-steel box girder web; 2-steel box girder top plate; 3-steel box girder bottom plate; 4-steel box girder bottom plate stiffening rib; 5, reinforcing ribs of a steel box girder web plate; 6, shear nail connecting pieces longitudinally arranged on the top plate of the steel box girder; 7-steel box girder diaphragm plate; 8-bridge deck concrete; 9-stiffening plates at the end parts of the steel box girder web plates; 10-a steel box girder web end bearing plate; 11-a shear nail connecting piece vertically arranged on a steel box girder web plate; 12-a steel plate connecting piece with a hole at the bottom of the steel box girder; 13-opening a steel plate connecting piece at the end part of the steel box girder; 14, shear nail connecting pieces which are transversely arranged on a bottom plate of the steel box girder; 15-abutment concrete; 21-steel box girder; 22-concrete deck slab; 23-an abutment; 24-a post-stage structure; 25-flexible pile foundation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the present invention is a single span integrated seamless bridge structure using a steel box composite beam. The main components of the structure are as follows: steel box girder 21, concrete bridge deck 22, abutment 23, post-abutment structure 24 and flexible pile foundation 25. The flexible pile foundation 25 is positioned below the abutment 23 and is cast with the abutment 23 into a whole; the steel box girder 21 mainly comprises main atress component, stiffening system, connected system triplex, main atress component includes steel box girder roof 2, steel box girder bottom plate 3 and steel box girder web 1, stiffening system includes steel box girder diaphragm 7, steel box girder bottom plate stiffening rib 4 and steel box girder web stiffening rib 5, connected system includes decking connected system and abutment connected system two parts, decking connected system is the shear force nail connecting piece 6 of steel box girder roof longitudinal arrangement, abutment connected system includes the shear force nail connecting piece 11 of steel box girder web vertical arrangement, the shear force nail connecting piece 14 and the steel box girder bottom trompil steel sheet connecting piece 12 of steel box girder bottom plate transverse arrangement, steel box girder tip trompil steel sheet connecting piece 13 two parts. The steel box girder top plate 2 is connected with the concrete bridge deck 22 into a whole through a bridge deck connecting system, and the bridge abutment connecting system extends into the bridge abutment 23 and is poured into a whole with the bridge abutment 23; one end of the abutment structure 24 is connected with the abutment 23 in a pouring manner, and the other end of the abutment structure is buried in soil.
The construction method of the single-span integral seamless bridge structure provided by the embodiment of the invention comprises the following steps:
firstly, preprocessing a steel box girder in a factory;
secondly, constructing a flexible pile foundation;
thirdly, binding a pile cap reinforcement framework, and pouring pile cap concrete;
fourthly, mounting a steel main beam;
binding the bridge abutment reinforcement cage, and pouring bridge abutment concrete;
and sixthly, pouring bridge deck concrete.
The single-span integral seamless bridge structure provided by the invention has the advantages of the traditional seamless bridge, and the steel box combination beam is adopted, so that the self weight of the structure is reduced, the bridge has better anti-seismic performance, the applicable span of the bridge is further increased, the structure height is reduced, and the under-bridge clearance is increased. The bridge abutment connecting system is reasonable in stress, and seamless connection of the main beam and the bridge abutment can be effectively guaranteed. In the aspect of construction, the steel box composite beam is high in erection speed and high in bridge forming precision, existing traffic under a bridge is not affected, and the steel box composite beam is particularly suitable for a overpass bridge.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides an adopt single integral seamless bridge structures of striding of steel case composite beam which characterized in that: the steel box girder bridge comprises steel box girders (21), concrete bridge decks (22), bridge abutments (23), a post-abutment structure (24) and flexible pile foundations (25), wherein the steel box girders (21) are installed between the bridge abutments (23), the flexible pile foundations (25) are connected below the bridge abutments (23), the post-abutment structure (24) is arranged on the bridge abutments (23), and the concrete bridge decks (22) are connected on the steel box girders (21); the steel box girder (21) consists of a stressed member, a stiffening system and a connecting system, wherein the stressed member comprises a steel box girder top plate (2), a steel box girder bottom plate (3) and a steel box girder web plate (1), and the steel box girder top plate (2) and the steel box girder bottom plate (3) are connected through the steel box girder web plate (1); the stiffening system comprises a steel box girder diaphragm (7), a steel box girder bottom plate stiffening rib (4) and a steel box girder web stiffening rib (5); the connecting system comprises two parts, namely a bridge deck connecting system and an abutment connecting system, wherein the bridge deck connecting system is a shear nail connecting piece (6) longitudinally arranged on a top plate of the steel box girder, and the abutment connecting system comprises two parts, namely a shear nail connecting piece (11) vertically arranged on a web plate of the steel box girder, a shear nail connecting piece (14) transversely arranged on a bottom plate of the steel box girder, a steel plate connecting piece (12) with a hole formed in the bottom of the steel box girder and a steel plate connecting piece (13) with a hole formed in the end part of the steel box girder; the steel box girder top plate (2) is connected with the concrete bridge deck (22) into a whole through a bridge deck connecting system, and the bridge deck connecting system extends into the bridge deck (23) and is poured with the bridge deck (23) into a whole; one end of the abutment rear structure (24) is connected with the abutment (23) in a pouring mode, and the other end of the abutment rear structure is buried in soil.
2. The single-span monolithic seamless bridge construction of claim 1, wherein: the steel box girder (21) is an open or closed steel box girder (21), and the number of the steel box girders (21) is one or more than one according to the actual bridge width.
3. The single-span monolithic seamless bridge construction of claim 1, wherein: the steel box girder (21) adopts a side height girder, and the height of the girder changes according to a quadratic parabola.
4. The single-span monolithic seamless bridge construction of claim 1, wherein: the concrete bridge deck (22) is a prefabricated member or a cast-in-place member.
5. The single-span monolithic seamless bridge construction of claim 1, wherein: one end of the abutment rear structure (24) is connected with the abutment (23) by cast-in-place pouring.
6. The construction method of the single-span integral type seamless bridge structure using the steel box composite beam as set forth in any one of claims 1 to 5, wherein: the method comprises the following steps:
preprocessing a steel box girder in a factory;
constructing a flexible pile foundation;
binding the pile cap reinforcement cage, and pouring pile cap concrete;
installing a steel main beam;
binding a bridge abutment reinforcement framework, and pouring bridge abutment concrete;
and pouring bridge deck concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199123.4A CN112211088A (en) | 2020-11-01 | 2020-11-01 | Single-span integral seamless bridge structure adopting steel box combination beam and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011199123.4A CN112211088A (en) | 2020-11-01 | 2020-11-01 | Single-span integral seamless bridge structure adopting steel box combination beam and construction method |
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| CN112211088A true CN112211088A (en) | 2021-01-12 |
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| CN202011199123.4A Pending CN112211088A (en) | 2020-11-01 | 2020-11-01 | Single-span integral seamless bridge structure adopting steel box combination beam and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351572A (en) * | 2022-01-26 | 2022-04-15 | 山东省交通规划设计院集团有限公司 | Bridge system for small-angle crossing of operation road without interrupting traffic construction |
| CN115491940A (en) * | 2022-08-22 | 2022-12-20 | 中交第一公路勘察设计研究院有限公司 | Steel-concrete combined structure roadbed for freeway in frozen soil area and construction method |
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