CN215887894U - Large-span steel truss web reinforced concrete composite beam bridge - Google Patents
Large-span steel truss web reinforced concrete composite beam bridge Download PDFInfo
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- CN215887894U CN215887894U CN202122433420.7U CN202122433420U CN215887894U CN 215887894 U CN215887894 U CN 215887894U CN 202122433420 U CN202122433420 U CN 202122433420U CN 215887894 U CN215887894 U CN 215887894U
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Abstract
The utility model discloses a large-span steel truss web reinforced concrete composite beam bridge, which comprises a plurality of trusses which are parallel to each other, wherein the upper ends and the lower ends of the trusses are respectively connected with an upper transverse link and a lower transverse link, and an inclined strut is arranged between the upper transverse link and the lower transverse link; the truss comprises an upper chord and a lower chord, the upper chord and the lower chord are connected through web members, an upper cross link is connected to the upper chord, and the upper ends of the upper cross link and the upper chord are sequentially provided with a bridge deck system; the upper chord member and the web members are all steel structures. According to the utility model, the upper transverse connection and the lower transverse connection strengthen the transverse connection between the trusses, and the diagonal bracing is arranged to improve the stability of the beam bridge; the upper chord bears tensile force in the using stage of the beam bridge and the construction period of the cantilever, and the lower chord bears compressive force in the using stage of the beam bridge and the construction period of the cantilever, so that the requirements of the top of the beam bridge on tension and the bottom of the beam bridge on compression are met; the upper chord member and the web members are steel structures, so that the factory production is facilitated, the on-site assembling construction is convenient, the construction period is shortened, and the construction cost is reduced.
Description
Technical Field
The utility model relates to the technical field of beam bridges, in particular to a large-span steel truss web reinforced concrete composite beam bridge.
Background
At present, a bridge between 100 meters and 200 meters is mainly a prestressed concrete continuous steel structure beam bridge, but the prestressed concrete continuous steel structure has large dead weight, and usually has structural risks of long-term down-warping across the middle and web cracking, and the injuries and diseases are usually difficult to be well solved after the injuries and diseases appear; and in a long-span prestressed concrete continuous steel structure girder bridge, the top is usually in tension and the bottom is in compression.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a large-span steel truss web reinforced concrete composite girder bridge suitable for large span.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
providing a large-span steel truss web reinforced concrete composite beam bridge, which comprises a plurality of trusses parallel to each other, wherein the upper ends and the lower ends of the trusses are respectively connected with an upper transverse link and a lower transverse link, and an inclined strut is arranged between the upper transverse link and the lower transverse link; the truss comprises an upper chord and a lower chord, the upper chord and the lower chord are connected through web members, an upper cross link is connected to the upper chord, and the upper ends of the upper cross link and the upper chord are sequentially provided with a bridge deck system.
The beneficial effects of adopting the above technical scheme are: the upper transverse connection and the lower transverse connection strengthen the transverse connection between the trusses, and inclined struts are arranged to improve the stability of the beam bridge; the upper chord member is connected with the web member and the bridge deck system, bears tensile force in the using stage of the beam bridge and the construction period of the cantilever and plays a main supporting role for the bridge deck system; the web members are connected with the upper chord member and the lower chord member, so that common stress is realized; the lower chord bears pressure in the using stage of the beam bridge and the construction period of the cantilever; the bridge deck system directly bears the loads of vehicles, crowds and the like and transmits the loads to the upper transverse connection and the upper chord member below.
Furthermore, the lower chord is of a reinforced concrete structure, and the lower cross-bar is connected to the web member.
The beneficial effects of adopting the above technical scheme are: the concrete has good compression resistance, the steel bars also have good compression resistance, and the reinforced concrete structure is firm and has good durability.
Further, the lower chord is of a steel structure, and the lower chord and the lower cross joint are arranged in the concrete bottom plate.
The beneficial effects of adopting the above technical scheme are: the lower chord and the lower cross joint are arranged in the concrete bottom plate, and the compressive property of the concrete is utilized to meet the requirement of the compression of the beam bridge bottom plate.
Further, the upper chord member and the web members are all steel structures.
The beneficial effects of adopting the above technical scheme are: the upper chord member and the web members are of steel structures, so that the industrial production is facilitated, the on-site assembly construction is convenient, the construction period is shortened, and the construction cost is reduced; in addition, the tensile property of the steel structure is utilized to meet the requirement that the upper chord is pulled; meanwhile, the web member of the steel structure has good ductility and is not easy to crack; in addition, the steel structure can effectively reduce the dead weight of the beam bridge, and the construction of the beam bridge with larger span is facilitated.
Further, the bridge deck system is a steel-concrete combined bridge deck structure or an orthotropic steel bridge deck structure.
The beneficial effects of adopting the above technical scheme are: the reinforced concrete combined bridge deck structure comprises a concrete bridge deck, and prestress can be applied to the concrete bridge deck according to stress requirements.
Furthermore, two or three trusses are arranged between the upper cross-link and the lower cross-link.
The beneficial effects of adopting the above technical scheme are: when the trusses are arranged into two pieces, the trusses form two truss bridges; when the truss is set to be three pieces, the truss is a three-truss bridge.
The utility model has the beneficial effects that: the upper transverse connection and the lower transverse connection strengthen the transverse connection between the trusses, and inclined struts are arranged to improve the stability of the beam bridge; the upper chord bears tensile force in the using stage of the bridge and the construction period of the cantilever, and the lower chord bears compressive force in the using stage of the bridge and the construction period of the cantilever, so that the requirements of the top of the bridge to be pulled and the bottom of the bridge to be compressed are met.
Drawings
FIG. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic structural diagram according to a first embodiment;
FIG. 3 is a schematic structural diagram according to a second embodiment;
FIG. 4 is a schematic structural diagram of the third embodiment;
FIG. 5 is a schematic structural diagram according to a fourth embodiment;
the bridge comprises 1 web members, 2 bridge deck systems, 3 bridge piers, 4 pile foundations, 5 upper chords, 6 upper cross ties, 7 diagonal braces, 8 lower cross ties, 9 lower chords, 10 concrete bottom plates.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all changes that come within the meaning and range of equivalency of the claims are to be embraced therein.
As shown in fig. 1 and 2, the large-span steel truss web reinforced concrete composite girder bridge is arranged on a pier 3, the lower end of the pier 3 is provided with a pile foundation 4 which comprises a plurality of trusses parallel to each other, the upper end and the lower end of each truss are respectively connected with an upper cross link 6 and a lower cross link 8, and an inclined strut 7 is arranged between the upper cross link 6 and the lower cross link 8; the truss includes top chord 5 and lower chord 9, and top chord 5 and lower chord 9 pass through web member 1 and connect, and last cross-member 6 is connected on top chord 5, and the upper end of going up cross-member 6 and top chord 5 has set gradually bridge floor system 2, and bridge floor system 2 includes bridge deck pavement, decking, longeron, crossbeam, pavement etc..
The upper transverse connection 6 and the lower transverse connection 8 strengthen the transverse connection between the trusses, and the inclined strut 7 is arranged to improve the stability of the beam bridge; the upper chord member 5 is connected with the web member 1 and the bridge deck system 2, bears tensile force in the using stage of the beam bridge and the construction period of the cantilever and plays a main supporting role for the bridge deck system 2; the web member 1 is connected with the upper chord 5 and the lower chord 9, so that common stress is realized; the lower chord 9 is subjected to pressure during the use stage of the bridge and during the construction of the cantilever; the bridge deck system 2 directly bears the loads of vehicles, crowds and the like and transmits the loads to the upper cross ties 6 and the upper chords 5 below.
As an alternative embodiment, the lower chord 9 is of a reinforced concrete structure, and the lower cross tie 8 is connected to the web member 1; the concrete has good compression resistance, the steel bars also have good compression resistance, and the reinforced concrete structure is firm and has good durability; and may be pre-stressed by force requirements across the span.
As an optional implementation mode, the lower chord 9 is of a steel structure, the lower cross link 8 can be connected to the lower chord 9, the lower chord 9 and the lower cross link 8 are arranged in the concrete bottom plate 10, and the requirement of compression of the bottom plate of the beam bridge is met by the aid of compression resistance of concrete.
As an optional implementation mode, the upper chord 5 and the web members 1 are both steel structures, which is beneficial to industrial production and convenient for on-site assembly construction, thereby shortening the construction period and reducing the construction cost; in addition, the tensile property of the steel structure is utilized to meet the requirement that the upper chord 5 is pulled; meanwhile, the web member 1 of the steel structure has good ductility and is not easy to crack; in addition, the steel structure can effectively reduce the dead weight of the beam bridge, and the construction of the beam bridge with larger span is facilitated.
As an alternative embodiment, the bridge deck system 2 is a steel-concrete composite bridge deck structure or an orthotropic steel bridge deck structure, and the steel-concrete composite bridge deck structure includes a concrete bridge deck slab, and a prestress can be applied in the concrete bridge deck slab according to the stress requirement.
As an optional implementation mode, two or three trusses are arranged between the upper cross link 6 and the lower cross link 8, and when the trusses are arranged into two pieces, two truss bridges are formed; when the truss is set to be three pieces, the truss is a three-truss bridge.
In the first embodiment shown in fig. 2, the lower chord 9 is of a reinforced concrete structure, the lower cross member 8 is connected to the web member 1, and the trusses are arranged in two pieces, and the long-span steel truss-web reinforced concrete composite beam bridge is a split lower chord type two-truss bridge.
In the second embodiment shown in fig. 3, the lower chord 9 is a steel structure, the lower chord 9 and the lower cross-bar 8 are arranged in the concrete bottom plate 10, and the trusses are arranged in two pieces, so that the long-span steel truss web reinforced concrete composite girder bridge is an integral lower chord type two-truss girder bridge.
In the third embodiment shown in fig. 4, the lower chord 9 is of a reinforced concrete structure, the lower cross-member 8 is connected to the web member 1, and the trusses are arranged in three pieces, and the long-span steel truss web reinforced concrete composite beam bridge is a split lower chord type three-truss beam bridge.
In the fourth embodiment shown in fig. 5, the lower chord 9 is a steel structure, the lower chord 9 and the lower cross-bar 8 are arranged in the concrete bottom plate 10, and the trusses are arranged into three pieces, so that the long-span steel truss web reinforced concrete composite girder bridge is an integral lower chord type three-truss girder bridge.
Claims (6)
1. The large-span steel truss web reinforced concrete composite girder bridge is characterized by comprising a plurality of trusses which are parallel to each other, wherein the upper ends and the lower ends of the trusses are respectively connected with an upper transverse connection (6) and a lower transverse connection (8), and an inclined strut (7) is arranged between the upper transverse connection (6) and the lower transverse connection (8); the truss comprises an upper chord (5) and a lower chord (9), the upper chord (5) and the lower chord (9) are connected through a web member (1), an upper cross link (6) is connected to the upper chord (5), and a bridge deck system (2) is sequentially arranged at the upper ends of the upper chord (5) and the upper cross link (6).
2. The long-span steel truss web reinforced concrete composite beam bridge as claimed in claim 1, wherein the lower chord (9) is of reinforced concrete structure, and the lower cross-member (8) is connected to the web member (1).
3. The long-span steel truss web reinforced concrete composite girder bridge according to claim 1, wherein the lower chord (9) is a steel structure, and the lower chord (9) and the lower cross-member (8) are disposed in a concrete bottom plate (10).
4. The long-span steel truss web reinforced concrete composite girder bridge according to claim 1, wherein the upper chord member (5) and the web member (1) are both steel structures.
5. The long-span steel truss web steel-concrete composite girder bridge according to claim 1, wherein the bridge deck system (2) is a steel-concrete composite bridge deck structure or an orthotropic steel deck structure.
6. The long-span steel truss web reinforced concrete composite girder bridge according to claim 1, wherein two or three trusses are arranged between the upper cross-link (6) and the lower cross-link (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433420.7U CN215887894U (en) | 2021-10-09 | 2021-10-09 | Large-span steel truss web reinforced concrete composite beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122433420.7U CN215887894U (en) | 2021-10-09 | 2021-10-09 | Large-span steel truss web reinforced concrete composite beam bridge |
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| Publication Number | Publication Date |
|---|---|
| CN215887894U true CN215887894U (en) | 2022-02-22 |
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| CN202122433420.7U Active CN215887894U (en) | 2021-10-09 | 2021-10-09 | Large-span steel truss web reinforced concrete composite beam bridge |
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2021
- 2021-10-09 CN CN202122433420.7U patent/CN215887894U/en active Active
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