CN209741642U - Assembled continuous steel box girder bridge - Google Patents
Assembled continuous steel box girder bridge Download PDFInfo
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- CN209741642U CN209741642U CN201821949277.9U CN201821949277U CN209741642U CN 209741642 U CN209741642 U CN 209741642U CN 201821949277 U CN201821949277 U CN 201821949277U CN 209741642 U CN209741642 U CN 209741642U
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Abstract
The invention provides an assembled continuous steel box girder bridge, which comprises a main girder, a transverse connecting beam and a cantilever beam, wherein the main girder, the transverse connecting beam and the cantilever beam are fixedly connected; the girder is provided with a plurality of groups, each group is formed by connecting a plurality of girder segments along the bridge direction, each girder segment comprises a girder top plate, a girder bottom plate, a girder web plate, a girder diaphragm plate and a girder stiffening rib, the girder web plate is fixed between the girder top plate and the girder bottom plate, the girder diaphragm plate is fixed between the girder top plate, the girder web plate and the girder bottom plate, and the girder stiffening rib is fixed on the girder top plate, the girder bottom plate and the girder web plate; the transverse connecting beams are arranged between the two adjacent groups of main beams, each transverse connecting beam is fixedly connected between the two adjacent groups of main beams, and the cantilever beams are fixedly connected with two groups of outer main beams in the plurality of groups of main beams.
Description
Technical Field
The utility model relates to a girder bridge field especially relates to an assembled continuous steel box girder bridge.
Background
in decades after the reform is opened, with the acceleration of the modern urbanization process of China, the bridge construction technology of China is rapidly developed, and the bridge industry has a certain scale. In the midspan bridge in China, most of the concrete beam bridges are, the concrete material is considered to be the preferable structural material with good durability and low price, and the concrete beam bridges are developed in China for decades and are most applied. However, the structure is affected by the factors such as the change of the use condition, the environmental erosion and the like, and the improper design and construction cause the structure to be damaged in different degrees, so that the bridge is damaged, the structure performance is degraded, the use function is gradually reduced or even completely lost, and the characteristic is particularly prominent in the mid-span bridge. With the development of national economy and the promotion of industrialization, for a plurality of midspan radial girder bridges, the prefabrication and assembly technology is more applied in the bridge industrialization process, the original design and construction process with low efficiency is simplified into the production and assembly process of standard components, and on the premise of ensuring the quality of bridge products, the bridge construction time is greatly shortened, namely the bridge rapid construction technology. Different from the traditional concrete beam prefabrication and assembly technology, the steel box girder bridge rapid construction technology has better industrialized foundation and industrialization potential, is more environment-friendly, is quicker to construct, and can better meet the requirement of light large span. According to the arrangement form division of the main beam, more steel box girders are adopted at present in the forms of single box, multiple chambers, multiple boxes and single chamber, etc.
The upper part of the steel box girder bridge mainly comprises a main girder, a transverse connection system and a bridge deck system, and a longitudinal connection system can be omitted because the transverse rigidity of the steel box girder bridge is very high. The single box bearing capacity of the steel box girder is large, the structural forms of single box, double box and multi-box can be adopted, and the overall arrangement is flexible. The single-box steel beam bridge usually adopts a single-box single-chamber structure form. The middle web plate of the single-box multi-chamber structure does not greatly contribute to the torsional rigidity of the box girder, the effective working width is not clear, and the steel consumption is increased, so the adoption is less, and the adoption is difficult when the girder height is limited. The bridge width is great, or the single case structural dimension is too big and is had the difficulty in preparation, transportation and installation and erect, or the single case effective width is very little, when uneconomical, it is comparatively reasonable to adopt two case structures.
The arrangement of the multi-box steel beam bridge is basically the same as that of the double-box steel beam bridge. Because the steel consumption of the multi-box structure is large, the multi-box structure is only used when the span is small and the bridge width is large, and in order to ensure that all main beams are uniformly stressed and improve the stress of a bridge deck, the main beams of the multi-box steel beam bridge are arranged at equal intervals as far as possible.
for a steel beam bridge with a double-box or multi-box structure, in order to enable all main beams to bear uniform stress and support longitudinal beams and bridge decks, a middle cross beam is often arranged between the box beams. The beam end or the middle support is provided with the beam, so that the integral torsion resistance of the bridge can be effectively improved, and the counter force of the pivot can be dispersed.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem among the prior art, this disclosure provides an assembled continuous steel box girder bridge with novel structure, realizes through following technical scheme.
The assembled continuous steel box girder bridge comprises a main girder, a transverse connecting beam and a cantilever beam, wherein the main girder, the transverse connecting beam and the cantilever beam are fixedly connected;
The girder is provided with a plurality of groups, each group is formed by connecting a plurality of girder segments along the bridge direction, each girder segment comprises a girder top plate, a girder bottom plate, a girder web plate, a girder diaphragm plate and a girder stiffening rib, the girder web plate is fixed between the girder top plate and the girder bottom plate, the girder diaphragm plate is fixed between the girder top plate, the girder web plate and the girder bottom plate, and the girder stiffening rib is fixed on the girder top plate, the girder bottom plate and the girder web plate;
a plurality of transverse connecting beams are arranged between the two adjacent main beams, and each transverse connecting beam is fixedly connected between the two adjacent main beams;
The transverse connecting beam comprises a transverse connecting beam top plate, a transverse connecting beam stiffening rib and a solid web type diaphragm plate, and the solid web type diaphragm plate is fixedly connected between the transverse connecting beam top plate and the transverse connecting beam stiffening rib;
The cantilever beam comprises a plurality of cantilever beam sections configured along the bridge direction, each cantilever beam section comprises a cantilever beam top plate, a cantilever beam web plate, a cantilever beam diaphragm plate and a cantilever beam stiffening rib, and the cantilever beam diaphragm plate is fixedly connected among the cantilever beam top plate, the cantilever beam web plate and the cantilever beam stiffening rib;
The cantilever beam is fixedly connected with two groups of outer main beams in the plurality of groups of main beams.
According to at least one embodiment of this disclosure, the cantilever beam roof is along horizontal bridge to and girder roof fixed connection, the cantilever beam cross slab and the girder cross slab fixed connection of two sets of outside girders in the multiunit girder.
According to at least one embodiment of the present disclosure, the solid-web type diaphragm includes a solid-web type long diaphragm and a solid-web type short diaphragm, the solid-web type long diaphragm is disposed on the abutment top of the girder bridge, the solid-web type long diaphragm is disposed in the midspan position of the bridge span, and the solid-web type short diaphragm is disposed between the abutment top of the girder bridge and the bridge span.
According to at least one embodiment of the present disclosure, the main beam stiffening ribs include three types of stiffening ribs, namely, a main beam flat rib, a main beam unequal-thickness U-shaped rib, and a main beam T-shaped rib, and upper ends of the main beam flat rib are fixedly connected to a main beam top plate, a main beam bottom plate, a main beam web plate, and a main beam diaphragm; the upper ends of the unequal-thickness U-shaped ribs of the main beam are fixedly connected with the top plate, and the T-shaped ribs of the main beam are connected with the transverse clapboard of the main beam.
According to at least one embodiment of the present disclosure, the solid web type short diaphragm plate is connected with the main beam diaphragm plate through a bolt, and the solid web type long diaphragm plate is connected with the main beam diaphragm plate through a bolt.
According to at least one embodiment of the present disclosure, the solid-web type diaphragms include solid-web type short diaphragm T-shaped ribs and solid-web type long diaphragm T-shaped ribs, the solid-web type short diaphragm T-shaped ribs being welded to the main beam web; the solid web type long diaphragm plate T-shaped rib is connected with the main beam bottom plate through a bolt.
according to at least one embodiment of the present disclosure, the transverse tie beam stiffener comprises a transverse tie beam flat rib, a transverse tie beam unequal thickness U-shaped rib and a transverse tie beam T-shaped rib, the transverse tie beam flat rib is fixedly connected with the transverse tie beam top plate; the T-shaped rib of the transverse connecting beam is fixedly connected with the solid web type diaphragm plate; the transverse connecting beam is fixed on the transverse connecting beam top plate through the U-shaped ribs with different thicknesses.
according to at least one embodiment of the present disclosure, the transverse connecting beam flat rib and the transverse connecting beam unequal-thickness U-shaped rib are arranged at intervals along the transverse bridge direction.
According to at least one embodiment of the present disclosure, the cantilever diaphragm is configured with a cantilever diaphragm stiffening rib, the cantilever diaphragm stiffening rib being fixedly connected with the main beam diaphragm stiffening rib.
According to at least one embodiment of the present disclosure, the cantilever beam stiffening ribs include two types of stiffening ribs, namely a cantilever beam flat rib and a cantilever beam T-shaped rib, and the upper end of the cantilever beam flat rib is fixedly connected with the cantilever beam top plate; the cantilever beam T-shaped rib is fixedly connected with the cantilever beam diaphragm.
The assembled continuous steel box girder bridge adopts a 'girder-transverse connecting beam-cantilever beam splicing system', namely, the transverse connecting beam is arranged in the middle of the girder to increase the connection between the girders. The advantages of this solution are: the structural form is between the form of double girders and the form of multi-girder (dense girder system), the added transverse connecting girder partially meets the stress requirement of the girders, and meanwhile, the steel consumption of the girders is greatly saved and the steel consumption of the girders is also saved. Meanwhile, compared with the traditional multi-box steel box girder welded on site, the assembled steel main girder segment is formed by welding each steel plate in a factory by workers in advance, and the non-welding seam of the site top plate removing position is realized. Each steel beam segment is assembled one by one on site through high-strength bolts to form a whole, the integrity and the permanence of the structure are guaranteed, and therefore the construction quality is guaranteed, and the difficulty of site operation is reduced.
Drawings
the accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a schematic representation of a forward-to-bridge structure of a main beam of an assembled continuous steel box girder bridge according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-bridge structure of a main girder of the assembled continuous steel box girder bridge according to the embodiment of the present disclosure;
FIG. 3 is a schematic view of a solid web long diaphragm construction of a transverse link beam of an assembled continuous steel box girder bridge according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of a solid web short bulkhead structure of a transverse link beam of an assembled continuous steel box girder bridge according to an embodiment of the present disclosure;
Fig. 5 is a schematic cross-sectional view of a cantilever beam of an assembled continuous steel box girder bridge according to an embodiment of the present disclosure.
Detailed Description
The present disclosure is described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant disclosure and not restrictive of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that, in the present disclosure, the embodiments and features of the embodiments may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-5, the assembled continuous steel box girder bridge comprises a main girder, a transverse connecting beam and a cantilever beam, wherein the main girder, the transverse connecting beam and the cantilever beam are fixedly connected; the girder is provided with a plurality of groups, each group is formed by connecting a plurality of girder segments along the bridge direction, each girder segment comprises a girder top plate 11, a girder bottom plate 12, a girder web plate 13, a girder diaphragm plate 14 and a girder stiffening rib 15, the girder web plate 13 is fixed between the girder top plate 11 and the girder bottom plate 12, the girder diaphragm plate 14 is fixed between the girder top plate 11, the girder web plate 13 and the girder bottom plate 12, and the girder stiffening rib 15 is fixed on the girder top plate 11, the girder bottom plate 12 and the girder web plate 13; a plurality of transverse connecting beams are arranged between the two adjacent main beams, and each transverse connecting beam is fixedly connected between the two adjacent main beams; the transverse connecting beam comprises a transverse connecting beam top plate 21, a transverse connecting beam stiffening rib 22 and a solid web type diaphragm plate, and the solid web type diaphragm plate is fixedly connected between the transverse connecting beam top plate 21 and the transverse connecting beam stiffening rib 22; the cantilever beam comprises a plurality of cantilever beam sections configured along the bridge direction, each cantilever beam section comprises a cantilever beam top plate 31, a cantilever beam web 32, a cantilever beam diaphragm plate 33 and a cantilever beam stiffening rib, and the cantilever beam diaphragm plate 33 is fixedly connected among the cantilever beam top plate 31, the cantilever beam web 32 and the cantilever beam stiffening rib; the cantilever beam is fixedly connected with two groups of outer main beams in the plurality of groups of main beams.
in at least one embodiment of the present disclosure, the cantilever top plate 31 is fixedly connected to the main beam top plate 11 along the transverse direction, and the cantilever diaphragm 33 is fixedly connected to the main beam diaphragms 14 of two outer main beams of the plurality of groups of main beams.
in at least one embodiment of the present disclosure, the solid-web type diaphragm includes a solid-web type long diaphragm 23 and a solid-web type short diaphragm 24, the solid-web type long diaphragm 23 is disposed on the abutment top of the girder bridge, the solid-web type long diaphragm 23 is disposed in the midspan position, and the solid-web type short diaphragm 24 is disposed between the abutment top of the girder bridge and the midspan position.
In at least one embodiment of the present disclosure, the main beam stiffening ribs include three types of stiffening ribs, namely, a main beam flat rib 151, a main beam unequal thickness U-shaped rib 152 and a main beam T-shaped rib, and the upper end of the main beam flat rib 151 is fixedly connected with the main beam top plate 11, the main beam bottom plate 12, the main beam web plate 13 and the main beam diaphragm plate 14; the upper ends of the unequal-thickness U-shaped ribs 152 of the main beam are fixedly connected with the top plate 11, and the T-shaped ribs of the main beam are connected with the transverse clapboard 14 of the main beam.
The flat ribs of the main beam web plate are fixed on the main beam web plate 13 and continuously pass through the positions of the transverse partition plates 14 (transverse rib plates) of the main beam; the flat ribs of the main beam bottom plate are fixed on the main beam bottom plate 12 and continuously pass through the main beam diaphragm 14. The U-shaped ribs 17 with different thicknesses of the main beam are fixed on the main beam top plate, and the U-shaped ribs of the main beam continuously pass through the positions of the transverse partition plates 14 (transverse rib plates) of the main beam; the main beam T-shaped ribs are connected to the main beam diaphragms 14.
In at least one embodiment of the present disclosure, the solid web short bulkhead 24 is bolted to the main beam bulkhead 14, and the solid web long bulkhead 23 is bolted to the main beam bulkhead 14.
Wherein, the solid web type short transverse clapboard 24 of the transverse connecting beam is connected with the girder top plate 11, the girder transverse clapboard 14 and the girder web plate 13 of the girder segment; the solid web type long diaphragm 23 of the transverse connecting beam is connected with the main beam top plate 11, the main beam diaphragm 14 and the main beam bottom plate 12 of the main beam segment.
In at least one embodiment of the present disclosure, the solid-web diaphragms include solid-web short diaphragm T-ribs and solid-web long diaphragm T-ribs, the solid-web short diaphragm T-ribs being welded to the spar web 13; the solid web type long diaphragm plate T-shaped rib is connected with the main beam bottom plate 12 through a bolt.
in at least one embodiment of the present disclosure, the transverse tie beam stiffener 22 includes a transverse tie beam flat rib 221, a transverse tie beam unequal thickness U-shaped rib 222, and a transverse tie beam T-shaped rib 223, the transverse tie beam flat rib 221 is fixedly connected with the transverse tie beam top plate 21; the T-shaped rib 223 of the transverse connecting beam is fixedly connected with the solid web type diaphragm plate; the transverse tie beam unequal thickness U-shaped rib 222 is fixed on the transverse tie beam top plate 21.
In at least one embodiment of the present disclosure, the transverse link flat rib 221 and the transverse link unequal-thickness U-shaped rib 222 are disposed at intervals in the transverse bridging direction.
In at least one embodiment of the present disclosure, the cantilever diaphragm is configured with a cantilever diaphragm stiffening rib, the cantilever diaphragm stiffening rib being fixedly connected with the main beam diaphragm stiffening rib.
In at least one embodiment of the present disclosure, the outrigger stiffener includes two types of stiffeners, namely an outrigger flat rib 341 and an outrigger T-shaped rib 342, and the upper end of the outrigger flat rib 341 is fixedly connected with the outrigger top plate 31; the outrigger T-shaped rib 342 is fixedly connected to the outrigger diaphragm 33.
in more detail, in one embodiment, there are 3 groups of main beams, and 3 groups of main beams are arranged on the top of the bridge abutment along the bridge direction in parallel, and each group of main beams is composed of a plurality of main beam sections which are connected. As shown in fig. 1 and 2, each girder segment includes a girder top plate 11, a girder bottom plate 12, a girder web 13, a girder diaphragm 14 (floor), and a girder stiffener 15, the girder web 13 being fixed between the girder top plate 11 and the girder bottom plate 12; a girder diaphragm 14 (a transverse rib plate) is fixed among the girder top plate 11, the girder bottom plate 12 and the girder web 13; the main beam bottom plate 12 and the main beam web 13 are provided with high-strength bolt holes, the main beam bottom plate 12 and the main beam web 13 are connected by high-strength bolts along the bridge direction, the main beam sections are connected together by the high-strength bolts during construction, the main beam diaphragm plate 14 is provided with the high-strength bolt holes, and the main beam and the transverse connecting beam are connected together by the high-strength bolt holes; welding a main beam top plate 11 along the bridge direction; on each main beam segment, there are a plurality of main beam stiffeners 15.
As shown in fig. 1 and 2, the girder stiffening ribs 15 include three types of stiffening ribs, namely, a girder flat rib 151, a girder unequal-thickness U-shaped rib 152, and a girder T-shaped rib, where the girder flat rib 151 includes a girder web flat rib fixed to the girder web 13, the girder web flat rib continuously passes through a girder diaphragm 14 (rib plate) at a position between girder segments in the forward direction, the girder bottom plate flat rib is fixed to the girder bottom plate 12, the girder bottom plate flat rib continuously passes through a girder diaphragm 14 (rib plate) at a position, the girder unequal-thickness U-shaped rib 152 is fixed to the girder top plate 11, and the girder unequal-thickness U-shaped rib 152 continuously passes through a girder diaphragm 14 (rib plate) at a position, which is bolted between girder segments in the forward direction; the T-shaped rib of the main beam is welded with the transverse clapboard 14 of the main beam; the girder top plate 11 and the girder unequal-thickness U-shaped ribs 152 form an orthotropic deck plate.
In the embodiment, according to the stress characteristics of the whole structure of the beam bridge, transverse connecting beams are arranged among the three groups of parallel main beams, and each transverse connecting beam is fixedly connected with the three groups of main beams; the transverse diaphragm of the transverse connecting beam adopts a solid web type transverse diaphragm.
As shown in fig. 3 and 4, the transverse connection beam comprises a top plate 21, a plurality of stiffening ribs 22, a solid web type short transverse partition plate 24 and a solid web type long transverse partition plate 23, the transverse connection beam solid web type long transverse partition plate 23 is shown in fig. 3, and the transverse connection beam solid web type long transverse partition plate 23 is arranged on the top of the bridge abutment; a solid-web type long diaphragm 23 of a transverse connection beam is arranged at the midspan position of the bridge span. Fig. 4 shows a solid web type short transverse partition 24 of the transverse connection beam, and the solid web type short transverse partition 24 of the transverse connection beam is disposed between the abutment top of the girder bridge and the bridge span. The solid web type diaphragm plate of the transverse connecting beam is provided with bolt holes and is connected with the diaphragm plate at the outer side of the main beam by adopting high-strength bolts; the transverse connecting beam top plate 21 is welded with the main beam top plate 11; the diaphragm T-shaped ribs are connected with the main beam web 13 and the main beam bottom plate 12, so that the fixed connection of the transverse connecting beam and the main beam is completed. The transverse tie-beam stiffening rib 22 includes three types of stiffening ribs, namely, a transverse tie-beam flat rib 221, a transverse tie-beam unequal thickness U-shaped rib 222, and a transverse tie-beam T-shaped rib 223, the transverse tie-beam flat rib 221 includes a transverse tie-beam top plate flat rib, a transverse tie-beam long diaphragm flat rib, the transverse tie-beam top plate flat rib is fixed on the transverse tie-beam top plate 21, the transverse tie-beam top plate flat rib passes continuously at the diaphragm position, which is bolted between the forward transverse tie-beam sections, the transverse tie-beam long diaphragm flat rib is welded on the long diaphragm 23, the transverse tie-beam unequal thickness U-shaped rib 222 is fixed on the transverse tie-beam top plate 21, the tie-beam top plate flat rib passes continuously at the diaphragm position, which is bolted between the forward transverse tie-beam sections, the transverse tie-beam unequal thickness U-shaped rib 222 passes continuously at the main beam diaphragm 14, which are bolted between the down-the-bridge main beam sections. The T-shaped rib 223 of the transverse connecting beam is fixed on the transverse partition plate of the transverse connecting beam, the T-shaped rib of the short transverse partition plate is welded with the web plate 13 of the main beam, and the T-shaped rib of the long transverse partition plate is connected with the bottom plate 12 of the main beam through a high-strength bolt.
The cantilever beam includes a plurality of bridge segments of following the direction of the bridge, a plurality of cantilever beam segments are along following the bridge and to the configuration, every cantilever beam segment includes roof 31, cross slab 33, web 32 and the flat rib 341 of cantilever beam, web 32 fixed connection is between roof 31 and bottom plate, flat rib 341 welding is on roof 31, cantilever beam roof 31 is in the cross bridge to 11 weldings with the girder roof, cantilever beam cross slab 33 passes through high strength bolted connection with girder outside cross slab, cantilever beam cross slab T shape rib 342 opens there is the bolt hole, it has the T shape rib with the girder cross slab to connect through high strength bolt, thereby the cantilever beam connects into the girder wholly with the girder, and cantilever beam roof 31 is 11 on same horizontal plane with the roof of girder.
As shown in fig. 5, the cantilever beam stiffening ribs include two types of stiffening ribs, namely a cantilever beam flat rib 341 and a cantilever beam T-shaped rib 342, the cantilever beam flat rib 341 is a cantilever beam top plate flat rib, the cantilever beam top plate flat rib is welded on the cantilever beam top plate 31, the cantilever beam top plate flat rib continuously passes through the transverse partition plate position, and is bolted between the bridge sections along the bridge direction, the cantilever beam T-shaped rib 342 is fixed on the cantilever beam transverse partition plate 33, the short transverse partition plate T-shaped rib is welded with the main beam web 13, and the long transverse partition plate T-shaped rib is connected with the main beam bottom plate 12 through a high-strength bolt.
And the continuous steel box girder is spliced in a full-bridge manner by welding and connecting the main girder, the transverse connecting girder and the cantilever beam through the high-strength bolt.
The technical scheme disclosed by the invention is particularly suitable for building a mid-span radial girder bridge with moderate width, fully exerts the advantages of prefabricated components and high-performance materials, can simultaneously meet the requirements of economy and structural stress of construction engineering, and has stronger practicability and operability.
The continuous steel box girder in the specific embodiment of the disclosure adopts the designed and welded girder segments which are prefabricated in a factory, and when in use, the girder segments are transported to a construction site and directly assembled, so that the whole construction process is time-saving and labor-saving; aiming at the bridge deck with moderate width, a system of 'multi-girder' + 'transverse connecting beam' + 'cantilever beam' is adopted, so that the stress requirement of the girder can be met, and the construction material can be saved; the pier top and the span are provided with the solid web type long transverse clapboard of the transverse connecting beam, and the other positions are provided with the solid web type short transverse clapboard of the transverse connecting beam, so that the design form is favorable for the stability of the whole structure; the use of light-duty non-prestressed structure and high performance material has simplified the structure, has guaranteed the high-quality of engineering, and standardized design + batch production manufacturing + modularization transportation + assembly erects, has satisfied the requirement of engineering economic nature and structural stress simultaneously.
it will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. The assembled continuous steel box girder bridge is characterized by comprising a main girder, a transverse connecting beam and a cantilever beam, wherein the main girder, the transverse connecting beam and the cantilever beam are fixedly connected;
The girder comprises a plurality of groups of girders, each group of the girders is formed by connecting a plurality of girder sections along the bridge direction, each girder section comprises a girder top plate, a girder bottom plate, a girder web plate, a girder diaphragm plate and a girder stiffening rib, the girder web plate is fixed between the girder top plate and the girder bottom plate, the girder diaphragm plate is fixed between the girder top plate, the girder web plate and the girder bottom plate, and the girder stiffening rib is fixed on the girder top plate, the girder bottom plate and the girder web plate;
The transverse connecting beams are arranged between the two adjacent main beams, and each transverse connecting beam is fixedly connected between the two adjacent main beams;
The transverse connecting beam comprises a transverse connecting beam top plate, a transverse connecting beam stiffening rib and a solid web type diaphragm plate, and the solid web type diaphragm plate is fixedly connected between the transverse connecting beam top plate and the transverse connecting beam stiffening rib;
The cantilever beam comprises a plurality of cantilever beam sections configured along the bridge direction, each cantilever beam section comprises a cantilever beam top plate, a cantilever beam web plate, a cantilever beam diaphragm plate and a cantilever beam stiffening rib, and the cantilever beam diaphragm plate is fixedly connected among the cantilever beam top plate, the cantilever beam web plate and the cantilever beam stiffening rib;
The cantilever beam is fixedly connected with two groups of outer main beams in the plurality of groups of main beams.
2. the assembled continuous steel box girder bridge of claim 1, wherein the cantilever beam top plate is fixedly connected to the girder top plates along a transverse direction, and the cantilever beam diaphragms are fixedly connected to girder diaphragms of two outer girders of the plurality of groups of girders.
3. The assembled continuous steel box girder bridge according to claim 1 or 2, wherein the solid web type diaphragms include solid web type long diaphragms and solid web type short diaphragms, the solid web type long diaphragms are disposed on the coping of the girder bridge, the solid web type long diaphragms are disposed at the mid-span position, and the solid web type short diaphragms are disposed between the coping of the girder bridge and the mid-span position.
4. The assembled continuous steel box girder bridge of claim 3, wherein the girder stiffening ribs comprise three types of stiffening ribs, namely a girder flat rib, a girder unequal-thickness U-shaped rib and a girder T-shaped rib, and the upper ends of the girder flat rib are fixedly connected with the girder top plate, the girder bottom plate, the girder web plate and the girder diaphragm; the upper ends of the unequal-thickness U-shaped ribs of the main beam are fixedly connected with the top plate, and the T-shaped ribs of the main beam are connected with the transverse clapboard of the main beam.
5. The assembled continuous steel box girder bridge of claim 3, wherein the solid web type short diaphragm plate is connected with the main girder diaphragm plate through a bolt, and the solid web type long diaphragm plate is connected with the main girder diaphragm plate through a bolt.
6. the assembled continuous steel box girder bridge of claim 3, wherein the solid web diaphragms include solid web short diaphragm T-ribs and solid web long diaphragm T-ribs, the solid web short diaphragm T-ribs being welded to the girder webs; the solid web type long diaphragm plate T-shaped rib is connected with the main beam bottom plate through a bolt.
7. the assembled continuous steel box girder bridge of claim 6, wherein the transverse tie beam stiffening ribs comprise a transverse tie beam flat rib, a transverse tie beam unequal thickness U-shaped rib, and a transverse tie beam T-shaped rib, the transverse tie beam flat rib being fixedly connected to the transverse tie beam top plate; the T-shaped rib of the transverse connecting beam is fixedly connected with the solid web type diaphragm plate; the transverse connecting beam is fixed on the transverse connecting beam top plate through the U-shaped ribs with different thicknesses.
8. The assembled continuous steel box girder bridge of claim 7, wherein the transverse tie beam flat ribs and the transverse tie beam unequal-thickness U-shaped ribs are arranged at intervals in a transverse bridge direction.
9. The assembled continuous steel box girder bridge of claim 2,
The cantilever beam diaphragm plate is provided with a cantilever beam diaphragm plate stiffening rib, and the cantilever beam diaphragm plate stiffening rib is fixedly connected with the girder diaphragm plate stiffening rib.
10. The assembled continuous steel box girder bridge of claim 2, wherein the outrigger stiffeners comprise two types of stiffeners, namely an outrigger flat rib and an outrigger T-shaped rib, and the upper end of the outrigger flat rib is fixedly connected with the outrigger top plate; the cantilever beam T-shaped rib is fixedly connected with the cantilever beam diaphragm.
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| CN201821949277.9U CN209741642U (en) | 2018-11-23 | 2018-11-23 | Assembled continuous steel box girder bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868715A (en) * | 2018-11-23 | 2019-06-11 | 中交公路规划设计院有限公司 | Assembling Steel Continuous Box beam bridge |
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- 2018-11-23 CN CN201821949277.9U patent/CN209741642U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868715A (en) * | 2018-11-23 | 2019-06-11 | 中交公路规划设计院有限公司 | Assembling Steel Continuous Box beam bridge |
| CN109868715B (en) * | 2018-11-23 | 2024-04-09 | 中交公路规划设计院有限公司 | Assembled continuous steel box girder bridge |
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