CN111749112B - Large-span integral bridge suitable for strong earthquake area and construction method - Google Patents
Large-span integral bridge suitable for strong earthquake area and construction method Download PDFInfo
- Publication number
- CN111749112B CN111749112B CN202010749755.7A CN202010749755A CN111749112B CN 111749112 B CN111749112 B CN 111749112B CN 202010749755 A CN202010749755 A CN 202010749755A CN 111749112 B CN111749112 B CN 111749112B
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- Prior art keywords
- abutment
- bridge
- bridge abutment
- top beam
- lapping plate
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- 238000010276 construction Methods 0.000 title claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract 4
- 230000035939 shock Effects 0.000 claims description 17
- 241001669679 Eleotris Species 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding 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
- E01D1/00—Bridges in general
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a large-span integral bridge suitable for a strong earthquake area and a construction method thereof, the large-span integral bridge comprises a frame-shaped bridge abutment, wherein the frame-shaped bridge abutment comprises a front bridge abutment, a rear bridge abutment, a top beam, a ground beam and a spherical mass block, the lower ends of the front bridge abutment and the rear bridge abutment are connected through the ground beam, the lower ends of the front bridge abutment and the rear bridge abutment are supported through pile foundations, the upper ends of the front bridge abutment and the rear bridge abutment are connected through the top beam, the front bridge abutment, the rear bridge abutment, the top beam and the ground beam enclose a damping section, the spherical mass block is suspended in the middle of the lower side surface of the top beam through a connecting rod, the upper end of the connecting rod is connected with the top beam, and rubber elastic layers are arranged on the front side wall and the rear side wall of the damping section.
Description
Technical Field
The invention belongs to the field of bridge engineering, and relates to a large-span integral bridge suitable for a strong earthquake region and a construction method.
Background
Along with the development of economy and social progress, the requirements of people on the construction of traffic infrastructures are higher, bridges are taken as key links of the infrastructures, the important roles in national production and living are played, the design technology of the bridges is continuously developed along with the times, and the requirements of people on the bridges are silently changed from the original 'open-circuit when meeting mountain and bridging when meeting water', which are only limited to meet the requirements of daily traffic and transportation, and the requirements in the aspects of economy, durability, comfort, attractive appearance and the like are more emphasized. The expansion joint of the traditional bridge is the most easily damaged part in the bridge structure due to the severe use environment and long-term exposure to the atmosphere. Meanwhile, the expansion joint is difficult to repair after being damaged, the maintenance cost is very expensive, and the requirements of people on economy and durability of the bridge structure are difficult to meet. Meanwhile, the existence of the expansion joint is also one of important factors affecting the travelling comfort. Integral bridge bridges have been developed for the above reasons. How to improve the shock resistance of a large-span integral bridge and the deformability is needed to be researched.
Disclosure of Invention
The invention provides a large-span integral bridge suitable for a strong earthquake region and a construction method.
The invention solves the technical problem by adopting a scheme that the large-span integral bridge suitable for the strong shock area comprises a frame-shaped bridge abutment, wherein the frame-shaped bridge abutment comprises a front bridge abutment, a rear bridge abutment, a top beam, a ground beam and a spherical mass block, the lower ends of the front bridge abutment and the rear bridge abutment are connected through the ground beam, the lower ends of the front bridge abutment and the rear bridge abutment are supported by pile foundations, the upper ends of the front bridge abutment and the rear bridge abutment are connected through the top beam, the front bridge abutment, the rear bridge abutment, the top beam and the ground beam enclose a shock absorption section, the spherical mass block is suspended in the middle of the lower side surface of the top beam through a connecting rod, the upper end of the connecting rod is connected with the top beam, and rubber elastic layers are arranged on the front side wall and the rear side wall of the shock absorption section.
Further, the frame-shaped bridge abutment is a concrete square frame bridge abutment.
Further, the rear abutment rear side is provided with the girder, is provided with the decking on the girder, girder front end and rear abutment overlap joint, and the girder downside is supported through a plurality of piers that follow girder length direction interval set up, and the pier lower extreme is provided with the pile foundation, and rear abutment front side is provided with interior access panel, and interior access panel front side is provided with outer access panel, and interior access panel rear end and front abutment overlap joint are provided with the expansion joint between outer access panel and the interior access panel on the sleeper beam to outer access panel rear end, interior access panel front end overlap joint.
Further, the upper side surfaces of the front bridge abutment, the rear bridge abutment, the top beam, the inner access board, the outer access board and the bridge deck are flush.
Further, paving layers are paved on the front bridge abutment and the rear bridge abutment as well as the top beam, the inner butt strap, the outer butt strap and the bridge deck, and the paving layers between the inner butt strap and the outer butt strap are separated through expansion joints.
Furthermore, the rear bridge abutment adopts a thick-wall structure, and the front bridge abutment adopts a flexible thin-wall structure.
Further, the thickness of the rubber elastic layer is 10mm.
A construction method of a large-span integral bridge suitable for a strong shock area comprises the following steps:
step1: prefabricating a top beam, a front bridge abutment, a rear bridge abutment and a ground beam;
step 2: the middle part of the lower side surface of the top beam is connected with a spherical mass block through a connecting rod, and rubber elastic layers are attached to the inner walls of the front abutment and the rear abutment;
step 3: splicing the prefabricated top beam, the front abutment, the rear abutment and the ground beam into a frame-shaped abutment;
step 4: and pouring the girder and the bridge abutment into a whole.
Compared with the prior art, the invention has the following beneficial effects: compared with the prior integral bridge, the bridge abutment is more flexible and stronger in deformability, can well meet the requirement of deformation of the large-span integral bridge, the spherical mass block in the middle of the bridge abutment can greatly dissipate seismic energy, the shock resistance of the integral bridge is improved, the operability is high, the applicability is strong, and the bridge abutment can be widely applied to the construction of the large-span integral bridge in a strong shock area in bridge engineering.
Drawings
The patent of the invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the integral bridge.
In the figure: 1-expanding joint; 2-an inner butt strap; 3-top beam; 4-bridge deck; 5, paving layers; 6-sleeper beams; 7-soil behind the platform; 8-a rear abutment; 9-a ground beam; 10-pile foundation; 11-front abutment; 12-a spherical mass; 13-a rubber elastic layer; 14-main beams; 15-pier.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1, a large-span integral bridge suitable for a strong earthquake area comprises a frame-shaped bridge abutment, wherein the frame-shaped bridge abutment comprises a front bridge abutment 11, a rear bridge abutment 5, a top beam 3, a ground beam 9 and a spherical mass block 12, the front bridge abutment and the lower end of the rear bridge abutment are connected through the ground beam, the front bridge abutment and the rear bridge abutment are connected together through the top beam of the frame-shaped bridge abutment, the lower ends of the front bridge abutment and the rear bridge abutment are respectively provided with a pile foundation 10, the upper ends of the front bridge abutment and the rear bridge abutment are connected through the top beam, the front bridge abutment, the rear bridge abutment, the top beam and the ground beam enclose a shock absorption section, the spherical mass block is hung in the middle of the lower side surface of the top beam through a connecting rod, the upper end of the connecting rod is hung or hinged with the top beam, under high-intensity earthquake excitation, the spherical mass block shakes greatly to dissipate earthquake energy so as to adapt to the environment condition of the strong earthquake area of the integral bridge, and rubber elastic layers 13 are arranged on the front side wall and the rear side wall of the shock absorption section so as to avoid the spherical mass from crashing the front bridge abutment and the concrete block under the condition of large-amplitude shaking condition.
In this embodiment, the frame-shaped abutment is a concrete box-shaped frame abutment.
In this embodiment, the rear abutment rear side is provided with girder 14, is provided with decking 4 on the girder, girder front end and rear abutment overlap joint, and the girder downside is supported through a plurality of piers 15 that set up along girder length direction interval, and the pier lower extreme is provided with the pile foundation, and the rear abutment front side is provided with interior access panel 2, and interior access panel front side is provided with outer access panel, and interior access panel rear end and front abutment overlap joint are provided with expansion joint 1 between outer access panel and the interior access panel on sleeper beam 6 to outer access panel rear end, interior access panel front end overlap joint.
In this embodiment, the upper sides of the front abutment, the rear abutment, the top beam, the inner access panel, the outer access panel and the bridge deck are flush.
In the embodiment, the front bridge abutment and the rear bridge abutment are paved with paving layers 5, and the paving layers between the inner and outer bridge abutment are separated by expansion joints.
In this embodiment, the rear abutment adopts the thick wall structure for retaining soil, and the front abutment adopts flexible thin wall structure to strengthen abutment flexibility, improve the deformability of bridge, adapt to the requirement of whole bridge large-span.
In this embodiment, the thickness of the rubber elastic layer is 10mm.
A construction method of a large-span integral bridge suitable for a strong shock area comprises the following steps:
step1: prefabricating a top beam, a front bridge abutment, a rear bridge abutment and a ground beam;
step 2: the middle part of the lower side surface of the top beam is connected with a spherical mass block through a connecting rod, and rubber elastic layers are attached to the inner walls of the front abutment and the rear abutment;
step 3: splicing the prefabricated top beam, the front abutment, the rear abutment and the ground beam into a frame-shaped abutment;
step 4: and pouring the girder and the bridge abutment into a whole.
If this patent discloses or relates to components or structures that are fixedly connected to each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In the description of this patent, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the patent, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the patent.
While the foregoing is directed to the preferred embodiment, other and further embodiments of the invention will be apparent to those skilled in the art from the following description, wherein the invention is described, by way of illustration and example only, and it is intended that the invention not be limited to the specific embodiments illustrated and described, but that the invention is to be limited to the specific embodiments illustrated and described.
Claims (6)
1. The utility model provides a whole bridge of large-span suitable for strong shock district, includes frame shape abutment, its characterized in that: the frame-shaped bridge abutment comprises a front bridge abutment, a rear bridge abutment, a top beam, a ground beam and a spherical mass block, wherein the lower ends of the front bridge abutment and the rear bridge abutment are connected through the ground beam, pile foundations are arranged at the lower ends of the front bridge abutment and the rear bridge abutment, the upper ends of the front bridge abutment and the rear bridge abutment are connected through the top beam, the front bridge abutment, the rear bridge abutment, the top beam and the ground beam enclose a damping section, the spherical mass block is suspended at the middle part of the lower side surface of the top beam through a connecting rod, the upper end of the connecting rod is connected with the top beam, and rubber elastic layers are arranged on the front side wall and the rear side wall of the damping section; the frame-shaped bridge abutment is a concrete square frame bridge abutment; the bridge comprises a main beam, wherein a rear abutment is arranged on the main beam, a bridge deck is arranged on the main beam, the front end of the main beam is overlapped with the rear abutment, the lower side of the main beam is supported by a plurality of bridge piers arranged at intervals along the length direction of the main beam, pile foundations are arranged at the lower end of the bridge piers, an inner lapping plate is arranged on the front side of the rear abutment, an outer lapping plate is arranged on the front side of the inner lapping plate, the rear end of the inner lapping plate is overlapped with the front abutment, the rear end of the outer lapping plate and the front end of the inner lapping plate are overlapped on a sleeper beam, and an expansion joint is arranged between the outer lapping plate and the inner lapping plate.
2. The large span integral bridge suitable for use in a high shock area of claim 1, wherein: the upper side surfaces of the front bridge abutment, the rear bridge abutment, the top beam, the inner access board, the outer access board and the bridge deck are flush.
3. The large span integral bridge suitable for use in a high shock area according to claim 2, wherein: paving layers are paved on the front bridge abutment and the rear bridge abutment, the top beam, the inner butt strap, the outer butt strap and the bridge deck, and the paving layers between the inner butt strap and the outer butt strap are separated through expansion joints.
4. The large span integral bridge suitable for use in a high shock area of claim 1, wherein: the rear bridge abutment adopts a thick-wall structure, and the front bridge abutment adopts a flexible thin-wall structure.
5. The large span integral bridge suitable for use in a high shock area of claim 1, wherein: the thickness of the rubber elastic layer is 10mm.
6. A construction method of a large-span integral bridge suitable for a strong shock area, adopting the large-span integral bridge suitable for the strong shock area according to claim 1, characterized by comprising the following steps:
step1: prefabricating a top beam, a front bridge abutment, a rear bridge abutment and a ground beam;
step 2: the middle part of the lower side surface of the top beam is connected with a spherical mass block through a connecting rod, and rubber elastic layers are attached to the inner walls of the front abutment and the rear abutment;
step 3: splicing the prefabricated top beam, the front abutment, the rear abutment and the ground beam into a frame-shaped abutment;
step 4: and pouring the girder and the bridge abutment into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749755.7A CN111749112B (en) | 2020-07-30 | 2020-07-30 | Large-span integral bridge suitable for strong earthquake area and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749755.7A CN111749112B (en) | 2020-07-30 | 2020-07-30 | Large-span integral bridge suitable for strong earthquake area and construction method |
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| Publication Number | Publication Date |
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| CN111749112A CN111749112A (en) | 2020-10-09 |
| CN111749112B true CN111749112B (en) | 2024-09-06 |
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| CN202010749755.7A Active CN111749112B (en) | 2020-07-30 | 2020-07-30 | Large-span integral bridge suitable for strong earthquake area and construction method |
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| CN112112058B (en) * | 2020-10-19 | 2024-05-31 | 福州大学 | Assembled square frame steel bridge abutment and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212641165U (en) * | 2020-07-30 | 2021-03-02 | 福州大学 | Large-span monolithic bridges suitable for strong earthquakes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108103927B (en) * | 2017-12-30 | 2019-06-14 | 北京工业大学 | Fully prefabricated double-layer frame pier structure system with recoverable function after earthquake |
| CN211080540U (en) * | 2019-10-11 | 2020-07-24 | 廖敏 | Swing type reinforced concrete anti-seismic frame structure |
| CN110886195B (en) * | 2019-12-12 | 2024-05-31 | 福州大学 | Shock insulation structure suitable for bridge abutment rigid frame bridge and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212641165U (en) * | 2020-07-30 | 2021-03-02 | 福州大学 | Large-span monolithic bridges suitable for strong earthquakes |
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| CN111749112A (en) | 2020-10-09 |
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