CN213653172U - Novel cable-stayed rigid frame combined bridge - Google Patents
Novel cable-stayed rigid frame combined bridge Download PDFInfo
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- CN213653172U CN213653172U CN202021925178.4U CN202021925178U CN213653172U CN 213653172 U CN213653172 U CN 213653172U CN 202021925178 U CN202021925178 U CN 202021925178U CN 213653172 U CN213653172 U CN 213653172U
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Abstract
The utility model discloses a novel cable-stay rigid frame composite bridge, including the main bridge, the main bridge includes pier, bridge, and the bridge includes cable-stay bridge and continuous rigid frame roof beam, and the cable-stay bridge includes suspension cable and body of the tower, steel construction girder, and the one end of suspension cable is fixed the body of the tower, the other end are fixed at the steel construction girder, and suspension cable bridge steel construction girder and continuous rigid frame roof beam connect into a whole. The utility model discloses a novel draw rigid frame composite bridge to one side has solved the problem that cable-stay bridge strides across rational arrangement, curve and arranges greatly, solves and strides across the problem.
Description
Technical Field
The utility model relates to a bridge structures especially relates to a novel draw rigid frame combination bridge to one side.
Background
With the vigorous development of the capital construction in China, the design concept of a bridge is continuously promoted, the construction process is matured day by day, the form of the bridge is more and more, wherein, for a typical representative of a large-span bridge, namely a cable-stayed bridge or a rigid frame bridge, the cable-stayed bridge is suitable for a straight line section or a limited curve section due to the structural characteristics of the cable-stayed bridge, the application range is limited, the span of the rigid frame bridge is smaller than that of the cable-stayed bridge and is not suitable for an environment requiring a larger span, the economic span of the rigid frame bridge is 70-250 m, the economic span of the cable-stayed bridge is 200-700 m, the arrangement beyond the economic span is uneconomical, when the bridge needs to span more than 250m and is arranged with a curved line, the cable-stayed bridge or the rigid frame bridge is not economical regardless of being used alone, and the economy is low.
Disclosure of Invention
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that cable-stay bridge is applicable to the straightway, and application scope is limited, and rigid frame bridge is applicable to and strides the footpath greatly, but prestressing force economic nature is not high. The stay cables of the cable-stayed bridge are equivalent to external prestress, and the prestress of the rigid frame bridge is arranged in the rigid frame structure. The purpose of the pre-stressing is to overcome gravity and live loads, both vertically down with lead. Compared with a stay cable, the prestress economic performance of the rigid frame bridge is not high, and the capability of overcoming gravity and live load is not strong.
In order to achieve the above object, the utility model provides a novel cable-stayed rigid frame composite bridge, including the main bridge, the main bridge includes pier, bridge, and the bridge includes cable-stay bridge and continuous rigid frame roof beam, and the cable-stay bridge includes suspension cable, body of the tower and steel construction girder, and the one end of suspension cable is fixed the body of the tower, the other end are fixed steel construction girder, steel construction girder and continuous rigid frame roof beam are connected and become a whole. The steel structure girder of the cable-stayed bridge is set as a steel box girder, one end of a stay cable is fixed on the tower body, and the other end of the stay cable is fixed on the steel box girder. The continuous rigid frame beam portion is provided as a prestressed concrete beam.
Further, 84 stay cables are provided.
Furthermore, the main bridge is positioned on 1.5 percent of the unidirectional longitudinal slopes, and the transverse bridge is provided with bidirectional 1.5 percent of the transverse slopes.
And furthermore, one end of the main bridge is folded and spliced with the continuous rigid frame beam.
Further, the stiffening beam is also included.
Furthermore, vertical supports, longitudinal sliding supports, transverse wind-resistant supports and longitudinal dampers are arranged at two ends of the stiffening beam.
Furthermore, the method is suitable for the large-span bridge with the curve section.
Technical effects
The utility model discloses a novel cable-stay rigid frame composite bridge be applicable to multiple application scene, solve and stride footpath, curve scheduling problem greatly, solve the leap problem of striding across footpath greatly, make original single cable-stay bridge, continuous rigid frame bridge system combination, the two advantage of full play reaches economic nature's effect. The utility model discloses a draw steel to one side and construct combination bridge and cause cost reduction.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic view of a novel cable-stayed rigid frame composite bridge according to a preferred embodiment of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a novel cable-stayed rigid frame composite bridge, including the main bridge, the main bridge includes pier 1, bridge, and the bridge includes cable-stay bridge and continuous steel structure roof beam, and the cable-stay bridge includes suspension cable 3, body of a tower 2 and steel construction girder, and the one end of suspension cable 3 is fixed at body of a tower 2, and the other end is fixed at the steel construction girder, and the steel construction girder is connected with continuous rigid frame roof beam and becomes a whole 4. The steel construction girder sets up to the steel box girder, and continuous rigid frame roof beam sets up to prestressed concrete roof beam, and wherein, body of the tower 2 is H type bridge tower, and the standard interval of suspension cable is equidistant on body of the tower 2 and the steel box girder, has 2 kinds of standard intervals on the roof beam: 4m and 12 m.
The number of the stay cables 3 is 84.
The main bridge is positioned on 1.5 percent of the unidirectional longitudinal slopes, and the transverse bridge is provided with bidirectional 1.5 percent of the transverse slopes. One end of the main bridge is folded and spliced with the continuous rigid frame beam.
Vertical supports, longitudinal sliding supports, transverse wind-resistant supports and longitudinal dampers are arranged at two ends of the whole body formed by connecting the steel box girder and the continuous steel structure girder.
The present invention will be described with reference to a specific example, which is a novel cable-stayed rigid frame composite bridge.
The main bridge in the embodiment adopts a novel cable-stayed rigid frame combination, the main bridge comprises a bridge pier, a bridge girder and a thin-wall hollow pier of the bridge pier, the bridge girder comprises a cable-stayed bridge and a continuous rigid frame girder to form the cable-stayed rigid frame combination, the main girder of the cable-stayed bridge adopts a steel structure girder, the steel box girder is adopted in the embodiment, the full width of the steel box girder is 32m, and the height of the steel box girder is 3 m; the tower body of the cable-stayed bridge is H-shaped. The stayed-cable bridge comprises 84 stayed-cable, the stayed-cable is galvanized steel wire, one end of the stayed-cable is anchored on the tower body, and the other end is anchored on the steel box girder. After the construction of the steel box girder of the cable-stayed bridge and the girder part bridge of the continuous rigid frame is finished respectively, a cast-in-place section between the girders is poured, so that the cable-stayed bridge part and the continuous rigid frame girder part are connected to form a whole. Two ends of a main beam of the main bridge (namely, the whole beam body formed by connecting the steel box beam and the continuous steel structure beam and the beam body for bearing vehicles and pedestrians) are provided with a vertical support, a longitudinal sliding support, a transverse wind-resistant support and a longitudinal damper, which are respectively arranged on the side surface or the lower part of the main beam and are used for limiting the displacement or the vibration of the main beam; and auxiliary piers are arranged on the side of the side span of the cable-stayed bridge and used for balancing the loads on two sides of the bridge tower. The slope of the main bridge is set to be 1.5% of unidirectional longitudinal slope, and the transverse bridge is provided with bidirectional 1.5% of transverse slope. In addition, the tower body of the cable-stayed bridge comprises two towers which are connected by adopting a cross beam, and the stiffening beam of the cable-stayed bridge is arranged on a support on the cross beam; two sides of the top surface of the stiffening beam are respectively provided with a stay cable. The stiffening beam is internally provided with a diaphragm plate, and the diaphragm plate is provided with a pipeline hole, a manhole and an anchor hole. The two ends of the diaphragm plate, namely the two sides of the stiffening beam, are connected with the stay cable steel anchor box, and the steel anchor box is arranged to be in the shape of a tuyere. The stiffening beam is provided with 6 longitudinal webs which are uniformly arranged. The size of the stiffening beam and the stiffening ribs are arranged conventionally.
The novel cable-stayed rigid frame combined bridge in the embodiment is arranged in an environment with a curve section, and because the curve section comprises a canyon, a bridge tower is arranged on one side of the bridge in order to span the canyon, and the number and the arrangement distance of the cable-stayed cables are determined according to the self weight of the bridge tower and the bridge and the total span of the bridge. The standard spacing of the stay cables is usually 6m, and in this embodiment, the spacing of the stay cables is 4m by encryption, so as to ensure the cable force balance of the cable-stayed rigid frame composite bridge of this embodiment after the data of the pylons, the self-weight of the bridge and the stay cables are combined. The total span of the main bridge of the cable-stayed rigid frame composite bridge in the embodiment is 645m, wherein the span of the main bridge is 375 m; the economic span of the corresponding rigid frame bridge is 70-250 m, the economic span of the cable-stayed bridge is 200-700 m, the continuous rigid frame bridge cannot be realized in span and economy only, and the cable-stayed bridge cannot completely adapt to the environment of curve arrangement.
The construction scheme of the novel cable-stayed rigid frame composite bridge of the embodiment is as follows: and symmetrically constructing beam sections by adopting a plane structure cantilever assembly method, and installing and tensioning corresponding stay cable assembled rigid frame piers and side piers for construction. And symmetrically and sequentially installing construction templates of all sections, binding reinforcing steel bars, pre-embedding corrugated pipes and pouring concrete. And symmetrically and sequentially installing construction templates of all sections, binding reinforcing steel bars, pre-embedding corrugated pipes and pouring concrete. And constructing a mid-span closure segment by adopting a plane structure cantilever assembly method.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. A novel cable-stayed rigid frame combined bridge is characterized by comprising a main bridge, wherein the main bridge comprises a pier and a bridge, the bridge comprises a cable-stayed bridge and a continuous rigid frame beam, the cable-stayed bridge comprises a cable-stayed cable, a tower body and a steel structure main beam, one end of the cable-stayed cable is fixed on the tower body, the other end of the cable-stayed bridge is fixed on the steel structure main beam, and the steel structure main beam and the continuous rigid frame beam are connected and integrated; the steel structure main beam is set as a steel box beam, and the continuous rigid frame beam is set as a prestressed concrete beam.
2. The novel cable-stayed rigid frame combined bridge as claimed in claim 1, wherein the number of the stay cables is 84.
3. The novel cable-stayed rigid frame combined bridge as claimed in claim 1, wherein the main bridge is positioned on a 1.5% unidirectional longitudinal slope, and the transverse bridge is provided with a bidirectional 1.5% transverse slope.
4. A novel cable-stayed rigid frame combined bridge as claimed in claim 3, wherein one end of the main bridge is folded and spliced with the continuous rigid frame beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925178.4U CN213653172U (en) | 2020-09-07 | 2020-09-07 | Novel cable-stayed rigid frame combined bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925178.4U CN213653172U (en) | 2020-09-07 | 2020-09-07 | Novel cable-stayed rigid frame combined bridge |
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| CN213653172U true CN213653172U (en) | 2021-07-09 |
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| CN202021925178.4U Active CN213653172U (en) | 2020-09-07 | 2020-09-07 | Novel cable-stayed rigid frame combined bridge |
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