CN215947844U - Large-span steel structure arch bridge - Google Patents
Large-span steel structure arch bridge Download PDFInfo
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- CN215947844U CN215947844U CN202120017772.1U CN202120017772U CN215947844U CN 215947844 U CN215947844 U CN 215947844U CN 202120017772 U CN202120017772 U CN 202120017772U CN 215947844 U CN215947844 U CN 215947844U
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Abstract
The application discloses long-span steel construction arched bridge, including bridge floor, side arch rib, middle arch rib, the below both sides of bridge floor are equipped with the transition pier stud, middle arch rib, side arch rib are located the both sides of bridge floor, the both ends of middle arch rib with the side arch rib is connected, the other end of side arch rib with the transition pier stud is connected, middle arch rib, side arch rib junction are equipped with middle triangular space structure, the side arch rib is equipped with the side triangular space structure with transition pier stud junction. Through set up the triangle district structure between rib and hunch seat, not only can connect adjacent rib, increase overall stability, can also offset a part horizontal component through the rib, and increase a vertical direction's component for the hunch seat, further optimize the overall stability of hunch seat. And two adjacent arch ribs with larger fluctuation are connected through the side upper limb arch and the middle upper limb arch, so that the smoothness and the aesthetic feeling of the curve are improved.
Description
Technical Field
The application relates to the field of highway engineering bridges, in particular to a long-span steel structure arch bridge.
Background
With the continuous development of arch bridge technology in China, the span and the number of multiple arches of the arch bridge are gradually increased in order to provide the spanning capability of the steel structure arch bridge. The traditional half-through steel structure arch bridge structure is shown in the following figures, the stress of the arch rib is counteracted and transmitted through the arch seat structure, and the defects are as follows:
(1) along with the increase of the span of the arch bridge, the load on the arch abutment is larger and larger, the transverse horizontal component force generated by the arch rib can only be counteracted through the arch abutment, and mass diseases are easily generated when the stress on the arch abutment is too large.
(2) Each arch rib project is independent, and the overall stability is poor.
(3) The linear up-and-down fluctuation of the arch seat is too large, and certain aesthetic feeling is lacked.
SUMMERY OF THE UTILITY MODEL
The main objective of this application provides a long span steel construction arched bridge, through being connected it with neighbouring arch rib and hunch seat, increases bridge overall stability.
The main aim at of this application provides a long span steel construction arched bridge, including bridge floor, side arch rib, middle arch rib, the below both sides of bridge floor are equipped with the transition pier stud, middle arch rib, side arch rib are located the both sides of bridge floor, the both ends of middle arch rib with the side arch rib is connected, the other end of side arch rib with the transition pier stud is connected, middle arch rib, side arch rib junction are equipped with middle triumph district structure, the side arch rib is equipped with the triumph district structure with transition pier stud junction.
Preferably, the middle triangular space structure comprises a middle upper limb arch connected with the arch springing of the side arch rib and the arch springing of the middle arch rib, a side reinforcing rib is further connected between the middle upper limb arch and the arch springing, and a middle reinforcing rib is arranged between the middle upper limb arch and the arch base.
Preferably, the lateral triangular space structure comprises a lateral upper limb arch connected with an arch foot and a lower limb arch of the lateral arch rib, a lateral reinforcing rib is further connected between the middle upper limb arch and the arch foot, and a middle reinforcing rib is arranged between the lateral upper limb arch and the arch base.
Preferably, the middle upper limb arch is in a concave arc shape, and the side upper limb arches are in a slope shape.
Preferably, a plurality of arch seats are arranged below the bridge floor, and the lower limb arch and the arch springing are connected with the arch seats.
Preferably, a plurality of suspension rods are arranged between the bridge deck and the middle arch rib and between the bridge deck and the side arch ribs, and the suspension rods are composed of galvanized parallel steel wire bundles.
Preferably, a cast-in-place pile foundation is arranged below the transition pier stud and the arch support, and the arch support is a convex solid pier.
Preferably, a rectangular bearing platform is arranged between the arch support and the cast-in-place pile foundation, the diameter of the arch support is 9-10m, the diameter of the rectangular bearing platform is 11m-13m, and the thickness of the rectangular bearing platform is 4-5 m.
The beneficial effect of this application is: through set up the triangle district structure between rib and hunch seat, not only can connect adjacent rib, increase overall stability, can also offset a part horizontal component through the rib, and increase a vertical direction's component for the hunch seat, further optimize the overall stability of hunch seat. And two adjacent arch ribs with larger fluctuation are connected through the side upper limb arch and the middle upper limb arch, so that the smoothness and the aesthetic feeling of the curve are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a front view of a large-span steel arch bridge according to an embodiment of the present application;
FIG. 2 is a schematic side triangle of FIG. 1;
fig. 3 is a schematic view of the middle triangle of fig. 1.
In the figure: 1-side arch rib, 2-middle arch rib, 3-middle upper limb arch, 4-side upper limb arch, 5-lower limb arch, 6-arch foot, 7-arch base, 8-transition pier stud, 9-cast-in-place pile foundation, 10-suspender, 11-middle reinforcing rib, 12-bridge deck, 13-expansion joint, 14-side reinforcing rib and 71-rectangular bearing platform.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Please refer to fig. 1-3, the application provides a long span steel structure arch bridge, including bridge floor 12, side arch rib 1, middle arch rib 2, the below both sides of bridge floor 12 are equipped with transition pier stud 8, middle arch rib 2, side arch rib 1 are located the both sides of bridge floor 12, the both ends of middle arch rib 2 with side arch rib 1 is connected, the other end of side arch rib 1 with transition pier stud 8 is connected, middle arch rib 2, side arch rib 1 junction are equipped with middle triangular space structure, side arch rib 1 is equipped with side triangular space structure with transition pier stud 8 junction.
In this embodiment, the middle triangular space structure includes a middle upper limb arch 3 connected with the arch springing 6 of the side arch rib 1 and the arch springing of the middle arch rib 2, a side reinforcing rib 14 is further connected between the middle upper limb arch 3 and the arch springing 6, and a middle reinforcing rib 11 is arranged between the middle upper limb arch 3 and the arch base 7.
In this embodiment, the lateral triangle structure includes a lateral upper limb arch 4 connected to the arch springing 6 and the lower limb arch 5 of the lateral arch rib 1, a lateral reinforcing rib 14 is further connected between the middle upper limb arch 3 and the arch springing 6, and a middle reinforcing rib 11 is provided between the lateral upper limb arch 4 and the arch base 7.
In this embodiment, the middle upper limb arch 3 is in the shape of a concave arc, and the side upper limb arches 4 are in the shape of slopes.
In this embodiment, a plurality of arch seats 7 are arranged below the bridge deck 12, and the lower limb arch 5 and the arch springing 6 are connected with the arch seats 7.
In this embodiment, a plurality of suspension rods 10 are arranged between the bridge deck 12 and the middle arch rib 2 and the side arch rib 1, and the suspension rods 10 are composed of galvanized parallel steel wire bundles.
In this embodiment, a cast-in-place pile foundation 9 is arranged below the transition pier stud 8 and the arch support 7, and the arch support 7 is a convex solid pier.
In this embodiment, a rectangular bearing platform 71 is arranged between the arch base 7 and the cast-in-place pile foundation 9, the diameter of the arch base 7 is 9-10m, the diameter of the rectangular bearing platform 71 is 11m-13m, and the thickness of the rectangular bearing platform 71 is 4-5 m.
The construction steps of the arch bridge comprise: and (3) arch support steel-concrete combined section construction: when the concrete of the arch center is poured, pre-embedded plates connected with the arch center, the side arch ribs and the middle arch ribs and edge-covering plates connected with the upper limb arch are pre-embedded in place and are accurately positioned.
Construction of a triangular area structure and a tie bar box: and the girder transporting vehicle drives from the small pile number side into the main bridge installation area, and transports the side span and each block section of the side triangular area to the position right below the gantry crane outside the arch support. And the gantry crane is sequentially provided with bridge block sections from the arch foot position to the arch rib direction. And (5) after the side triangular area is installed, installing arch ribs of the triangular area of the No. 10 pier in the same installation sequence and method.
Installing a bridge deck system: bridge deck system blocks at positions which are not conflicted with the support are symmetrically arranged from two sides to midspan.
Installing arch ribs: after the main arch tie beam (tie bar box) is installed, the support is continuously heightened to the bottom of the arch rib, and the arch rib is symmetrically installed from two sides to the middle in sequence.
Installing the upper limb arch of the triangular area: and finally, welding the upper limb arch, the arch rib and the triangular area into a whole.
Through set up the triangle district structure between rib and hunch seat, not only can connect adjacent rib, increase overall stability, can also offset a part horizontal component through the rib, and increase a vertical direction's component for the hunch seat, further optimize the overall stability of hunch seat. The arch ribs with larger fluctuation are connected through the arch curves of the upper limbs, so that the smoothness and the aesthetic feeling of the curves are improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. The utility model provides a long span steel construction arched bridge, its characterized in that includes bridge floor, side arch rib, middle arch rib, the below both sides of bridge floor are equipped with the transition pier stud, middle arch rib, side arch rib are located the both sides of bridge floor, the both ends of middle arch rib with the side arch rib is connected, the other end of side arch rib with the transition pier stud is connected, middle arch rib, side arch rib junction are equipped with middle triangular space structure, the side arch rib is equipped with side triangular space structure with transition pier stud junction.
2. A long span steel arch bridge of claim 1, wherein the middle triangular space structure includes a middle upper arch connected to the arch springing of the side arch rib and the arch springing of the middle arch rib, and a lateral reinforcement rib is connected between the middle upper arch and the arch springing, and a middle reinforcement rib is provided between the middle upper arch and the arch base.
3. The arch bridge of claim 2, wherein the lateral triangular space structure comprises lateral upper limbs arches connected to the legs and lower limbs arches of the lateral arch rib, and intermediate reinforcing ribs are provided between the lateral upper limbs arches and the arch support.
4. A large span steel arch bridge of claim 3, wherein the middle upper limbs arch is concave arc shaped and the side upper limbs arch is ramp shaped.
5. The arch bridge with the large span steel structure as claimed in claim 4, wherein a plurality of arch seats are arranged under the bridge deck, and the lower limb arch and the arch springing are connected with the arch seats.
6. A large-span steel structure arch bridge as defined in claim 1, wherein a plurality of hanger rods are provided between said bridge deck and said middle and side arch ribs, said hanger rods being made of galvanized parallel steel wire bundles.
7. A large-span steel structure arch bridge of claim 2, wherein the transition pier, the foundation of the cast-in-place pile is arranged under the arch abutment, and the arch abutment is a convex solid pier.
8. The arch bridge with the large span steel structure as claimed in claim 7, wherein a rectangular bearing platform is arranged between the arch support and the cast-in-place pile foundation, the diameter of the arch support is 9-10m, the diameter of the rectangular bearing platform is 11m-13m, and the thickness of the rectangular bearing platform is 4-5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017772.1U CN215947844U (en) | 2021-01-05 | 2021-01-05 | Large-span steel structure arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120017772.1U CN215947844U (en) | 2021-01-05 | 2021-01-05 | Large-span steel structure arch bridge |
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| CN215947844U true CN215947844U (en) | 2022-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878171A (en) * | 2021-01-05 | 2021-06-01 | 中交路桥建设有限公司 | Large-span steel structure arch bridge and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878171A (en) * | 2021-01-05 | 2021-06-01 | 中交路桥建设有限公司 | Large-span steel structure arch bridge and construction method |
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