CN212641165U - Large-span whole bridge suitable for strong earthquake area - Google Patents
Large-span whole bridge suitable for strong earthquake area Download PDFInfo
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- CN212641165U CN212641165U CN202021544668.XU CN202021544668U CN212641165U CN 212641165 U CN212641165 U CN 212641165U CN 202021544668 U CN202021544668 U CN 202021544668U CN 212641165 U CN212641165 U CN 212641165U
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Abstract
The invention relates to a large-span integral bridge suitable for a strong earthquake area, which comprises a frame-shaped abutment, wherein the frame-shaped abutment comprises a front abutment, a rear abutment, a top beam, a ground beam and a spherical mass block, the lower ends of the front abutment and the rear abutment are connected through the ground beam, the lower ends of the front abutment and the rear abutment are supported through pile foundations, the upper ends of the front abutment and the rear abutment are connected through the top beam, the front abutment, the rear abutment, the top beam and the ground beam enclose a damping area, 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, rubber elastic layers are arranged on the front side wall and the rear side wall of the damping area, compared with the conventional integral bridge, the abutment is more flexible and has stronger deformation capability, the requirement of the large-span integral bridge can be well met, the spherical mass block in the middle of the abutment can greatly dissipate, the application is strong, can be widely applied to the large-span integral bridge construction in strong earthquake areas in bridge engineering.
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.
Background
Along with the development of economy and social progress, the requirements of people on the construction of traffic infrastructures are higher, bridges serve as key links of infrastructures and have a great significance in national production and life, the design technology of bridges is continuously developed along with the times, and the requirements of people on bridges are subtly changed from the original requirements of meeting mountain open roads and water bridges only to meet the requirements of daily traffic and transportation to the requirements of paying more attention to economy, durability, comfort, attractiveness and the like. The expansion joint of the traditional bridge is the most easily damaged part in the bridge structure due to the fact that the use environment is severe and the expansion joint is exposed in the atmosphere for a long time. Meanwhile, the expansion joint is difficult to repair after being damaged, and the maintenance cost is very expensive, so that 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 the important factors influencing the driving comfort. The whole bridge is produced by the transportation of the bridge for the reasons. How to improve the shock resistance of the large-span integral bridge and improve the deformation capability needs to be researched urgently.
Disclosure of Invention
The invention provides a large-span integral bridge suitable for a strong earthquake region.
The invention solves the technical problem by adopting the scheme that a large-span integral bridge suitable for a strong earthquake region comprises a frame-shaped abutment, wherein the frame-shaped abutment comprises a front abutment, a rear abutment, a top beam, a ground beam and a spherical mass block, the lower ends of the front abutment and the rear abutment are connected through the ground beam, the lower ends of the front abutment and the rear abutment are supported by pile foundations, the upper ends of the front abutment and the rear abutment are connected through the top beam, the front abutment, the rear abutment, the top beam and the ground beam enclose a shock absorption region, 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 the front side wall and the rear side wall of the shock absorption region are.
Further, the frame-shaped abutment is a concrete square-shaped frame abutment.
Further, the rear abutment rear side is provided with the girder, be provided with the decking on the girder, girder front end and rear abutment overlap joint, the girder downside supports through a plurality of piers that set up along girder length direction interval, the pier lower extreme is provided with the pile foundation, the rear abutment front side is provided with interior attachment strap, interior attachment strap front side is provided with outer attachment strap, interior attachment strap rear end and front abutment overlap joint, outer attachment strap rear end, interior attachment strap front end overlap joint are provided with the seam that expands between outer attachment strap and the interior attachment strap on the sleeper beam.
Furthermore, the upper side surfaces of the front abutment, the rear abutment, the top beam, the inner butt strap, the outer butt strap and the bridge deck are flush.
Furthermore, the front abutment and the rear abutment are paved with the top beam, the inner butt strap, the outer butt strap and the bridge deck plate, and the paved layers between the inner butt strap and the outer butt strap are separated by the expansion joints.
Furthermore, the rear abutment is of a thick-wall structure, and the front abutment is of a flexible thin-wall structure.
Further, the thickness of the rubber elastic layer is 10 mm.
Compared with the prior art, the invention has the following beneficial effects: compared with the conventional integral bridge, the bridge abutment is more flexible, the deformation capacity is stronger, the requirement of deformation of the large-span integral bridge can be well met, the spherical mass block in the middle of the bridge abutment can greatly dissipate seismic energy, the seismic resistance of the integral bridge is improved, the operability is high, the applicability is strong, and the method can be widely applied to construction of the large-span integral bridge in a strong seismic area in bridge engineering.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a schematic structural diagram of the integral bridge.
In the figure: 1-expansion joint; 2-inner butt strap; 3-top beam; 4-a bridge deck; 5, paving a layer; 6-corbel; 7-cutting soil; 8-rear abutment; 9-a ground beam; 10-pile foundation; 11-a front abutment; 12-a spherical mass; 13-a rubber elastic layer; 14-a main beam; 15-pier.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in figure 1, a large-span whole bridge suitable for a strong earthquake area comprises a frame-shaped abutment, wherein the frame-shaped abutment comprises a front abutment 11, a rear abutment 5, a top beam 3, a ground beam 9 and spherical mass blocks 12, the lower ends of the front abutment and the rear abutment are connected through the ground beam, the top beam and the ground beam of the frame-shaped abutment connect the front abutment and the rear abutment together to ensure the integrity of the abutment, the lower ends of the front abutment and the rear abutment are respectively provided with a pile foundation 10, the upper ends of the front abutment and the rear abutment are connected through the top beam, the front abutment, the rear abutment, the top beam and the ground beam enclose a shock absorption area, the spherical mass blocks are hung in the middle of the lower side surface through connecting rods, the upper ends of the connecting rods are hung or hinged with the top beam, under the excitation of a high-intensity earthquake, the spherical mass blocks greatly shake to dissipate the earthquake energy to adapt to the environmental conditions of the strong earthquake area of the whole bridge, the, so as to avoid the damage caused by the collision and breakage of the front and rear abutment concrete under the condition of large-amplitude shaking of the spherical mass block.
In this embodiment, the frame-shaped abutment is a concrete frame abutment shaped like a Chinese character kou.
In this embodiment, the rear abutment rear side is provided with girder 14, be provided with decking 4 on the girder, girder front end and rear abutment overlap joint, the girder downside supports through a plurality of piers 15 along girder length direction interval setting, the pier lower extreme is provided with the pile foundation, the rear abutment front side is provided with interior access panel 2, interior access panel front side is provided with outer access panel, interior access panel rear end and front abutment overlap joint, outer access panel rear end, interior access panel front end overlap joint is on sleeper beam 6, be provided with expansion joint 1 between outer access panel and the interior access panel.
In the embodiment, the upper sides of the front abutment, the rear abutment, the top beam, the inner butt strap, the outer butt strap and the bridge deck are flush.
In the embodiment, the front abutment and the rear abutment are paved with the top beam, the inner butt strap, the outer butt strap and the bridge deck by the paving layer 5, and the paving layers between the inner butt strap and the outer butt strap are separated by the expansion joint.
In this embodiment, the rear abutment adopts a thick-wall structure for retaining soil, and the front abutment adopts a flexible thin-wall structure for enhancing the flexibility of the abutment, improving the deformability of the bridge and adapting to the requirement of large span of the whole bridge.
In this embodiment, the thickness of the rubber elastic layer is 10 mm.
The construction steps are as follows:
step 1: prefabricating a top beam, a front abutment, a rear 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;
and step 3: splicing the prefabricated top beam, the front abutment, the rear abutment and the ground beam into a frame-shaped abutment;
and 4, step 4: and pouring the main beam and the bridge abutment into a whole.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: 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 the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a large-span whole bridge suitable for strong earthquake district, includes frame shape abutment, its characterized in that: frame-shaped abutment includes front abutment, rear abutment, back timber, grade beam, spherical quality piece, front abutment, rear abutment lower extreme are connected through the grade beam, front abutment, rear abutment lower extreme all are provided with the pile foundation, front abutment, rear abutment upper end are connected through the back timber, front abutment, rear abutment, back timber, a shock attenuation interval in ground beam enclosure, spherical quality piece hangs back timber downside middle part through the connecting rod, the connecting rod upper end is connected with the back timber, all be provided with the rubber elastic layer on the lateral wall around the shock attenuation interval.
2. The large-span integral bridge suitable for severe earthquake areas according to claim 1, wherein: the frame-shaped abutment is a concrete square-shaped frame abutment.
3. The large-span integral bridge suitable for severe earthquake areas according to claim 1, wherein: the utility model discloses a bridge, including back abutment, girder front end and back abutment overlap joint, the girder downside is supported through a plurality of piers along girder length direction interval setting, the pier lower extreme is provided with the pile foundation, back abutment front side is provided with interior attachment strap, interior attachment strap front side is provided with outer attachment strap, interior attachment strap rear end and front abutment overlap joint, outer attachment strap rear end, interior attachment strap front end overlap joint is on the sleeper beam, be provided with the expansion joint between outer attachment strap and the interior attachment strap.
4. The large-span integral bridge suitable for severe earthquake areas according to claim 3, wherein: the upper side surfaces of the front abutment, the rear abutment, the top beam, the inner butt strap, the outer butt strap and the bridge deck are flush.
5. The large-span integral bridge suitable for severe earthquake areas according to claim 4, wherein: the front abutment and the rear abutment are paved with the top beam, the inner butt strap, the outer butt strap and the bridge deck plate, and the paving layers between the inner butt strap and the outer butt strap are separated by expansion joints.
6. The large-span integral bridge suitable for severe earthquake areas according to claim 1, wherein: the rear abutment is of a thick-wall structure, and the front abutment is of a flexible thin-wall structure.
7. The large-span integral bridge suitable for severe earthquake areas according to claim 1, wherein: the thickness of the rubber elastic layer is 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021544668.XU CN212641165U (en) | 2020-07-30 | 2020-07-30 | Large-span whole bridge suitable for strong earthquake area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021544668.XU CN212641165U (en) | 2020-07-30 | 2020-07-30 | Large-span whole bridge suitable for strong earthquake area |
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| Publication Number | Publication Date |
|---|---|
| CN212641165U true CN212641165U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021544668.XU Active CN212641165U (en) | 2020-07-30 | 2020-07-30 | Large-span whole bridge suitable for strong earthquake area |
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| CN (1) | CN212641165U (en) |
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2020
- 2020-07-30 CN CN202021544668.XU patent/CN212641165U/en active Active
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