CN107245953A - The bent device and crossed construction method of a kind of multilayer bridge structure - Google Patents
The bent device and crossed construction method of a kind of multilayer bridge structure Download PDFInfo
- Publication number
- CN107245953A CN107245953A CN201710574228.5A CN201710574228A CN107245953A CN 107245953 A CN107245953 A CN 107245953A CN 201710574228 A CN201710574228 A CN 201710574228A CN 107245953 A CN107245953 A CN 107245953A
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- bridge
- framed bent
- bailey beam
- main line
- girder
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/04—Road crossings on different levels; Interconnections between roads on different levels
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of bent device of multilayer bridge structure and crossed construction method, it sets up the full hall bowl button framed bent of handing-over pier in irregular box-girder handing-over pier stud position；Set up branch pagoda of bowls button framed bent and door opening bowl button framed bent in the middle of Bailey beam respectively on the width bridge floor of main line bridge two；Set steel pipe column support respectively in the every width both sides in main line bridge bridge bottom, and above steel pipe column support connection along bridge to Bailey beam, along bridge to above Bailey beam across direction across bridge Bailey beam；Set beam lower supporter to connect with irregular box-girder beam bottom mother plate in direction across bridge Bailey beam, both avoided middle building, bearing capacity and the stability requirement of overall framed bent have been met again, so as to ensure that construction safety and construction speed；Corresponding framed bent is set according to diverse location respectively, therefore, it is possible to save construction cost；Simultaneously because on main deck door opening bowl button framed bent setting, the requirement that has a good transport and communication network is disclosure satisfy that again.
Description
Technical field
The present invention relates to engineering construction technology field, filled more particularly, to a kind of framed bent for multilayer bridge structure
Put and crossed construction technology.
Background technology
With the development of the society, transportation network also goes from strength to strength.Because space is limited, the bridge structure number of plies of design is more next
It is more, height also more and more higher.And in the work progress of multilayer bridge structure, the concrete frame for supporting bridge structure
The selection of form and position are particularly important, it will directly influence the construction safety of multilayer bridge structure, construction speed,
Construction cost, have a good transport and communication network.
Exist for main line bridge centre position needs above building structure (such as station, exhibition center, theater), and building structure
The multilayer bridge structure for setting irregular box-girder to be connected the car of four direction, the construction of irregular box-girder is led
The influence of building structure in the middle of line bridge and main line bridge, selection and the position of its framed bent form it is also contemplated that it is limited because
Element.
Existing framed bent form has following three kinds of forms：Full hall bowl fastening type framed bent, full hall disk mouthful formula framed bent, steel pipe column combination shellfish
Lei Liang.
The based process scope of full hall bowl fastening type framed bent therein is big, causes framed bent to set up position and main line bridge centre position
The construction speed of building structure in the middle of the building structure conflict of presence, influence main line bridge.
Due to the presence of middle building structure, full hall disk button framed bent therein can not be attached with contiguous structure thing,
Full hall disk button framed bent code requirement is unsatisfactory for, the resistance to overturning of the full hall disk button framed bent is difficult to ensure that；And framed bent is taken
It is located on main line bridge, construction road can be blocked, is unsatisfactory for that the road is clear and requires.
For steel pipe column combination Bailey beam construction method, for the headroom that guarantee main line bridge vehicle is current, Bailey beam can not be adopted
With Bailey beam is strengthened, so its deflection value can exceed code requirement, be unsatisfactory for security requirement.
It can be seen that, existing any box beam framed bent form can not meet whole constructions of above-mentioned multilayer bridge structure situation
It is required that, be easily caused can not on time, safety, smooth construction and the demand having a good transport and communication network.
The content of the invention
The purpose of the present invention is many there is provided one kind the problem of being unsatisfactory for multilayer bridge structure construction requirement for framed bent form
The bent device and crossed construction method of layer bridge structure, it ensure that duration, safety, the construction requirement of the coast is clear.
The purpose of the present invention is achieved through the following technical solutions：
The present invention provides a kind of bent device of multilayer bridge structure, and it includes：
Join branch pagoda of bowls button framed bent in the middle of the full hall bowl button framed bent of pier, Bailey beam, door opening bowl button framed bent, steel pipe column support, shellfish
Lei Liang and beam lower supporter；
The full hall bowl button framed bent of handing-over pier is located at four handing-over pier stud positions of irregular box-girder；The full hall bowl button of handing-over pier
Thick pillar connection is carried out using section bar between framed bent and adjacent pier stud；
Branch pagoda of bowls button framed bent is located at the centre position on a main line bridge wherein width bridge floor in the middle of the Bailey beam；The door opening
Bowl button framed bent is located on another width bridge floor of main line bridge；
The steel pipe column supports totally four row, respectively positioned at the both sides of the every width bridge floor of main line bridge, and often in the support of row's steel pipe column,
It is welded as a whole between adjacent steel string supports using shaped steel；
The Bailey beam includes suitable bridge to Bailey beam and direction across bridge Bailey beam；It is described to be fixedly connected on institute to Bailey beam along bridge
Steel pipe column support top is stated, the pier stud at irregular box-girder two ends is extended to direction along bridge；The direction across bridge Bailey beam is across institute
State along bridge to the top of branch pagoda of bowls button framed bent in the middle of Bailey beam, Bailey beam and door opening bowl button framed bent, direction across bridge direction extends to different
The pier stud at shape box beam two ends；
The beam lower supporter is located at below the top of direction across bridge Bailey beam, irregular box-girder beam bottom mother plate.
It is highly preferred that the beam lower supporter includes：
Beam bottom bowl button framed bent or the lumps of wood；
When direction across bridge Bailey beam is more than setting height threshold value away from irregular box-girder bottom girder end template distance, the beam bottom is set
Bowl button framed bent is located at below the top of direction across bridge Bailey beam, irregular box-girder beam bottom mother plate, and using full hall bowl button rack form；
It is square described in pad when direction across bridge Bailey beam away from irregular box-girder bottom girder end template apart from setting height threshold value is less than constantly
Wood is below the top of direction across bridge Bailey beam, irregular box-girder beam bottom mother plate.
It is highly preferred that placing plank between the full hall bowl button framed bent of handing-over pier and its basis.
It is highly preferred that in the middle of the Bailey beam before the bottom of branch pagoda of bowls button framed bent and main line bridge between place steel plate；
And/or,
Door opening bowl button framed bent bottom and main line bridge before between place steel plate.
It is highly preferred that laying observation station in the direction across bridge Bailey beam.
It is highly preferred that a kind of bent device of described multilayer bridge structure also includes：
The full hall bowl button framed bent set in the ring road pars basilaris pontis joined with main line bridge.
It is highly preferred that branch pagoda of bowls button framed bent and door opening bowl detain row in the middle of the full hall bowl button framed bent of the handing-over pier, Bailey beam
In frame, vertical rod horizontal spacing is not less than horizontal spacing threshold, and longitudinal pitch is not less than to indulge spacing threshold, and step pitch is not less than step pitch threshold
Value；Along short transverse, one of horizontal cross brace is then set at interval of the first interval threshold.
The present invention also provides a kind of crossed construction method of multilayer bridge, and it includes：
Step S101, sets up main line bridge box beam, and carry out main line bridge bridge deck concrete pavement based on main line bridge box beam；
Step S102, the pier stud positioned at the center of irregular box-girder is constructed；
All steel pipe column brace foundations at main line bridge bridge bottom respectively positioned at the every width both sides of main line bridge are constructed by step S103
And the assembly of steel pipe column support；Fabric structure in the middle of main line bridge is constructed simultaneously；
Step S104, sets up suitable bridge to Bailey beam above steel pipe column support；Then set up along bridge to above Bailey beam
Direction across bridge Bailey beam；Fabric structure in the middle of main line bridge is constructed simultaneously；
Step S105, full hall bowl button bent foundation construction；Based on the full hall bowl button bent foundation, friendship is set up in handing-over Dun Chu
Connect the full hall bowl button framed bent of pier；Set up on the side bridge floor of main line bridge on branch pagoda of bowls button framed bent in the middle of Bailey beam, opposite side bridge floor
Set up door opening bowl button framed bent；Beam lower supporter is set up on direction across bridge Bailey beam；Fabric structure in the middle of main line bridge is entered simultaneously
Row construction；
Step S106, special-shaped box girder construction, and suspend during special-shaped box girder construction to fabric structure in the middle of main line bridge
Construction.
It is highly preferred that the crossed construction method of the multilayer bridge also includes：
Step S100 before step S101, i.e., set full hall bowl button row in the ring road pars basilaris pontis joined with main line bridge
Frame.
It is highly preferred that the crossed construction method of the multilayer bridge also includes：
After the completion of Bailey beam erection, observation station is laid in direction across bridge Bailey beam, and observation is laid in the observation station
Equipment；
During step S106 carries out special-shaped box girder construction, Bailey beam amount of deflection is monitored by the scope and sunk
Value, such as occurs the excessive abnormal conditions of amount of deflection, suspends follow-up irregular box-girder construction.
The present invention has the following technical effect that it can be seen from the technical scheme of the invention described above：
The full hall bowl button framed bent of handing-over pier is set up in four handing-over pier stud positions of irregular box-girder；In the width opposite direction of main line bridge two
Bridge floor on set up branch pagoda of bowls button framed bent and door opening bowl button framed bent in the middle of Bailey beam respectively；In the both sides of the every width bridge floor of main line bridge point
Row's steel pipe column support is not set up, and is fixedly connected with suitable bridge to Bailey beam above steel pipe column support and is extended to along bridge to direction
The pier stud at irregular box-girder two ends, along bridge to above Bailey beam across direction across bridge Bailey beam and direction across bridge direction extends to irregular box
The pier stud at beam two ends；Set beam lower supporter to connect with irregular box-girder beam bottom mother plate above direction across bridge Bailey beam, both avoid centre
Building, meets bearing capacity and the stability requirement of overall framed bent, so as to ensure that construction safety and construction speed again；Due to
Corresponding framed bent is set according to diverse location respectively, therefore, it is possible to save construction cost；Simultaneously because door opening bowl button on main deck
The setting of framed bent, disclosure satisfy that the requirement that has a good transport and communication network again.
Brief description of the drawings
A kind of applicable multilayer bridge structure schematic diagram of the bent device for multilayer bridge structure that Fig. 1 provides for the present invention；
A kind of elevation of the bent device for multilayer bridge structure that Fig. 2 provides for the present invention；
A kind of plan of the bent device for multilayer bridge structure that Fig. 3 provides for the present invention；
A kind of construction process figure of the crossed construction method for multilayer bridge structure that Fig. 4 provides for the present invention；
In accompanying drawing：
Join branch pagoda of bowls button framed bent 2 in the middle of the full hall bowl button framed bent 1 of pier, Bailey beam, door opening bowl button framed bent 3, steel pipe column support
4, Bailey beam 5, beam bottom bowl button framed bent 6, the lumps of wood 7；Along bridge to Bailey beam 5-1 and direction across bridge Bailey beam 5-2.
Embodiment
The present invention is described in further details below with reference to accompanying drawing.
Embodiment one：
The embodiment of the present invention one provides a kind of bent device of multilayer bridge structure, and it is applied to multilayer as shown in Figure 1
Bridge structure, the multilayer bridge structure is from top to bottom total to four-layer structure：First layer is irregular box-girder structure, probably in cross,
The car of four direction is connected, structure type is cast-in-place prestressed reinforced concrete structure, the four of irregular box-girder structure
Pier stud is respectively provided with below individual angle, numbering is respectively B1P10, B1P8, B2-1P6, B2-2P0, the centre position of irregular box-girder structure
B1P9 pier studs are set；B1P8 pier studs are located at irregular box-girder east side, and the vehicle of east side bridge is connected with irregular box-girder；B1P10 piers
Post is located at irregular box-girder west side, and the vehicle of west side bridge is connected with irregular box-girder；B2-1P6 pier studs are located at irregular box-girder north side,
The vehicle of north side bridge is connected with irregular box-girder；B2-2P0 pier studs be located at irregular box-girder southern side, by the vehicle of southern side bridge with
Irregular box-girder is connected.The second layer is station, below irregular box-girder, and structure type is reinforced concrete frame structure；Third layer is
Main line bridge east width and western width, respectively positioned at station thing both sides, structure type is precast prestressed box beam；4th layer is and main line
The S2 ramp bridges that bridge connects, positioned at station north side, come in and go out from the eastern width of main line bridge and western width and are bypassed along camber line from station north side, and
The ramp bridge bridge floor is located at below main line bridge, and structure type is cast-in-place prestressed reinforced concrete structure.
The structure of embodiment one as shown in Figures 2 and 3, including such as lower component：
Join branch pagoda of bowls button framed bent 2 in the middle of the full hall bowl button framed bent 1 of pier, Bailey beam, door opening bowl button framed bent 3, steel pipe column support
4, Bailey beam 5, beam bottom bowl button framed bent 6, the lumps of wood 7.Wherein Bailey beam 5 includes suitable bridge to Bailey beam 5-1 and direction across bridge Bailey beam 5-
2。
Join the full hall bowl button framed bent 1 of pier and be located at four handing-over pier stud positions of irregular box-girder, due to irregular box-girder be located at this four
The part box beam of top is solid in the individual handing-over pier stud band of position, and concrete load is larger, therefore the handing-over pier stud position area
Domain can increase reaction of bearing and integrally-built stability, while can reduce shellfish using the full structure of hall bowl button framed bent 1 of handing-over pier
Thunder beam section span, increases security.Join and carried out between the full hall bowl button framed bent 1 of pier and adjacent pier stud using section bar (such as steel pipe)
Thick pillar is connected, and is the vertical spacing threshold (such as 4m) not less than thick pillar section bar for the vertical spacing of section bar that thick pillar is connected；Handing-over
Vertical rod horizontal spacing in the full hall bowl button framed bent 1 of pier is not less than horizontal spacing threshold value (such as 0.6m), and it is vertical that longitudinal pitch, which is not less than,
To spacing threshold (0.6m), step pitch is not less than step pitch spacing threshold (such as 0.6m)；Along short transverse, at interval of the first interval threshold
Value (2.4m) then sets one of horizontal cross brace.Join the outside of the full hall bowl button framed bent 1 of pier at interval of the second interval threshold (such as
Vertical bridging together 4.2m) is set, and the brace and ground angle of bridging are between 45 °~60 °, and surrounding is continuous from bottom to top
Set.In order to uniformly transfer the stress of the full hall bowl button framed bent 1 of handing-over pier to main line bridge bridge floor, in the full hall bowl button row of the handing-over pier
Plank is placed between frame 1 and its basis.
Branch pagoda of bowls button framed bent 2 is located at the centre position on the eastern width bridge floor of main line bridge in the middle of Bailey beam.Due to main line bridge east
The deflection deformation of middle position spandrel girder on width bridge floor is maximum, so in the centre position using branch pagoda of bowls in the middle of Bailey beam
Detain framed bent 2 and support top is carried out to the irregular box-girder on top, middle position spandrel girder on the eastern width bridge floor of main line bridge can be reduced
Amount of deflection so that the deflection value of the middle position spandrel girder on the width bridge floor of main line bridge east is in prescribed limit, while can increase
The contact area of branch pagoda of bowls button framed bent 2 and main line bridge bridge floor, the load that top is transmitted is changed into linearly in the middle of Bailey beam
Load, bridge floor will not be subject to crushing.In the middle of the Bailey beam in branch pagoda of bowls button framed bent 2, vertical rod horizontal spacing is not less than horizontal spacing threshold
(such as 0.6m), longitudinal pitch is not less than to indulge spacing threshold (0.6m), and step pitch is not less than step pitch threshold value (such as 0.6m)；Along height
Direction, one of horizontal cross brace is then set at interval of the first interval threshold (2.4m).
To increase the contact area in the middle of Bailey beam between branch pagoda of bowls button framed bent 2 and the eastern width bridge floor of main line bridge, in Bailey beam
Place steel plate in the bottom of middle branch pagoda of bowls button framed bent 2.
Door opening bowl button framed bent 3 is located on the western width bridge floor of main line bridge.Keep main bridge passage road unobstructed to meet in work progress
It is required that, the centre position of door opening bowl button framed bent 3 is door opening, and door opening both sides are respectively full hall bowl button framed bent.To prevent on top
Dropped object occurs to be placed with protective plate above security incident, door opening in structure construction procedure.To ensure that vehicle can smoothly lead to
Cross, the width and height of door opening are not less than 5m.In the bowl button framed bent of door opening both sides, vertical rod horizontal spacing is not less than horizontal spacing threshold
(such as 0.6m), longitudinal pitch is not less than to indulge spacing threshold (0.6m), and step pitch is not less than step pitch threshold value (such as 0.6m)；Along height
Direction, one of horizontal cross brace is then set at interval of the first interval threshold (2.4m).For increase door opening bowl button framed bent 3 and main line bridge
Contact area between western width bridge floor, steel plate is placed between the bottom of door opening bowl button framed bent 3 and the western width bridge floor of main line bridge.
Above-mentioned is, as Construction traffic running route, therefore to set door opening bowl to detain in the western width of main line bridge using the selected western width of main line bridge
Framed bent 3.Certainly, if the selected eastern width of main line bridge is Construction traffic running route, door opening bowl can also be set in main line bridge eastern width
Detain framed bent 3.
Totally four row of steel pipe column support 4, respectively positioned at the eastern width both sides of main line bridge and the western width both sides of main line bridge, adjacent steel pipe column branch
The maximum spacing that average headway between support 4 is not more than between the equal spacing threshold of pipe (such as 2.0m), adjacent steel string supports 4 is little
In largest tube spacing threshold (such as 2.2m).
Because steel pipe column support in part is located within the scope of station, frame AT STATION is put into the steel pipe column support 4 of these parts
Beyond setting a roof beam in place, when applying station floor layer, this part steel pipe column supports the floor concrete of 4 positions to pour, and treats top
Irregular box-girder pours completion, segmented dismounting steel pipe column support 4.Floor layer reinforcing bar is attached by code requirement, then pours this
Position floor concrete.Used for convenience of the steel pipe column support 4 removed in the range of steel pipe column support 4, station outside 2m/ sections, station scope
Steel pipe column support 4 using 6m/ save.
Because steel pipe column support 4 is placed to be single, and it can not be connected with pier stud progress thick pillar, therefore adjacent steel string supports
It is welded as a whole between 4 using section bar (such as I-steel), strengthens resistance to overturning, while the steel pipe column support 4 in strip footing
Many high intensity expansion foundation bolts are played in position, by the whole anchor connections of expansion foundation bolt, it is to avoid produced during box girder construction
The accident of raw unstability.
Bailey beam 5 is included along bridge to Bailey beam 5-1 and direction across bridge Bailey beam 5-2, using not reinforced Bailey beam.Along bridge
It is located at the top of steel pipe column support 4 to Bailey beam 5-1, northwards extends to the B2-1P6 pier studs of irregular box-girder north side, extend to southwards
The B2-2P0 pier studs in irregular box-girder southern side；To prevent that unstable phenomenon occurs in work progress, this is along bridge to Bailey beam 5-1 and steel pipe
Firm welding is carried out using U-shaped card between post support 4.Direction across bridge Bailey beam 5-2 is positioned across Yu Shunqiao to Bailey beam 5-1, shellfish
The top of branch pagoda of bowls button framed bent 2 and door opening bowl button framed bent 3, westwards extends to the B1P10 pier studs in irregular box-girder west side in the middle of Lei Liang,
Extend eastward to the B1P8 pier studs in irregular box-girder east side.
Observation station is laid on direction across bridge Bailey beam 5-2, Bailey beam amount of deflection sinking is monitored at any time in work progress, such as sent out
The excessive abnormal conditions of raw amount of deflection, should suspend the construction of irregular box-girder, and take emergency measures, and ensure the safety of construction worker.
Beam bottom bowl button framed bent 6 is located at below direction across bridge Bailey beam 5-2 top, irregular box-girder beam bottom mother plate, using full hall
Bowl button rack form.
For direction across bridge Bailey beam 5-2 away from irregular box-girder bottom girder end template apart from too small region, it is impossible to carry out bowl button and take
If, therefore the beam lower supporter that the region is used no longer is beam bottom bowl button framed bent 6, but the pad lumps of wood 7.
S2 ring roads pars basilaris pontis sets full hall bowl button framed bent.Because S2 ramp bridges are shorter, so direct in its bottom box beam
Full hall bowl button framed bent is set.
Embodiment two：
Exist for main line bridge centre position needs above building structure (such as station, exhibition center, theater), and building structure
Three layers of bridge structure situation for setting irregular box-girder to be connected the car of four direction.It is fitted with embodiment one
Situation is compared, and has lacked the S2 ramp bridges joined with main line bridge.In this case, using embodiment two.The embodiment two with
It is in place of the difference of embodiment one, the full hall bowl button framed bent for being arranged on ring road bottom is no longer included in the embodiment two, remaining
It is identical with embodiment one, it is not detailed herein.
Embodiment three：
There is middle building structure (such as station, exhibition center, theater) for main line bridge centre position, and in building structure
Side needs three layers of bridge structure for setting irregular box-girder to be connected the car of four direction, and the present invention also provides a kind of
The crossed construction method of multilayer bridge structure, its construction process is as shown in figure 4, comprise the following steps：
Step S101, sets up main line bridge box beam, and carry out main line bridge bridge deck concrete pavement based on main line bridge box beam.
Prefabricated main line bridge box girder transport is first set up to behind job site；Then carried out based on the main line bridge box beam
Main line bridge bridge deck concrete pavement.
Step S102, positioned at the center B1P9 pier studs construction of irregular box-girder.
Step S103, all steel pipe columns support the assembly of 4 foundation constructions and steel pipe column support 4.
Along bridge to direction, to being located at the eastern width both sides of main line bridge and all steel pipes in western width both sides respectively at main line bridge bridge bottom
Post supports the assembly of 4 foundation constructions and steel pipe column support 4；
The basis of steel pipe column support 4 is strip footing, using C30 reinforced concrete structures, between steel pipe column support 4 and its basis
Using many high-strength expansion bolts, by the whole anchor connections of foundation bolt.
Step S104, Bailey beam is set up.
It will be supported along bridge to Bailey beam 5-1 loaded on steel pipe column above in the of 4, direction across bridge Bailey beam 5-2 is across suitable bridge to shellfish
Above thunder beam 5-1.
After the completion of Bailey beam is set up, observation station is laid on direction across bridge Bailey beam 5-2 and scope is laid.
Step S105, all full hall bowl button bent foundation constructions and full hall bowl button framed bent are set up.
Full hall bowl button bent foundation construction, and set up after carrying out full hall bowl button framed bent after base concrete solidification：In handing-over
Dun Chu sets up the full hall bowl button framed bent 1 of handing-over pier；Branch pagoda of bowls button framed bent 2 in the middle of Bailey beam is set up on the eastern width bridge floor of main line bridge,
Door opening bowl button framed bent 3 is set up on the western width bridge floor of main line bridge；Beam bottom bowl button framed bent 6 or side are set up on direction across bridge Bailey beam 5-2
Wood 7.
Step S106, special-shaped box girder construction.
Abnormal shape of being constructed above beam lower supporter box beam.During irregular box-girder concrete placings, the construction at pause lower section station is treated
After the completion of box beam concrete placings, station of constructing can be continued.Sight during special-shaped box girder construction by being placed in Bailey beam
Measurement equipment monitors Bailey beam amount of deflection sinking at any time, such as occurs the excessive abnormal conditions of amount of deflection, should suspend follow-up irregular box-girder
Construction, and take emergency measures, ensure the safety of construction worker.
Step S107, full hall framed bent dismounting → Bailey beam dismounting → steel pipe column support and basis are removed.
Carry out construction station structure construction simultaneously during step S103~S105, and step S107.
If after step S107 is completed, station structure does not complete also, then continues to construct to the station structure.
Example IV：
The crossed construction side of another multilayer bridge structure is also provided for four layers of bridge structure present invention as shown in Figure 1
In method, four layers of bridge structure, there is building structure (such as station, exhibition center, theater), and building knot in main line bridge centre position
Need to set irregular box-girder to be connected the car of four direction above structure, main line pars basilaris pontis there are S2 ring roads.For this
The crossed construction method for another multilayer bridge structure that inventive embodiments four are provided, on the basis of above-described embodiment three, also
Including：
Step S100 before step S101, i.e., set full hall bowl button row in the ring road pars basilaris pontis joined with main line bridge
Frame.Because S2 ramp bridges are shorter, so directly setting full hall bowl button framed bent in its bottom box beam.
It is above-mentioned to be illustrated so that building in the middle of main line bridge is station as an example, but the invention is not limited in this,
Middle building can also be other buildings such as exhibition center etc..
The present invention is set up using in four handing-over pier stud positions of irregular box-girder it can be seen from embodiments of the invention described above
Join the full hall bowl button framed bent 1 of pier；Branch pagoda of bowls button in the middle of Bailey beam is set up respectively on the bridge floor of the width opposite direction of main line bridge two to arrange
Frame 2 and door opening bowl buckle framed bent 3；Set up row's steel pipe column support 4 respectively in the both sides of the every width bridge floor of main line bridge, and in steel pipe column branch
The top of support 4 is fixedly connected along bridge to Bailey beam 5-1 and the pier stud at irregular box-girder two ends is extended to direction along bridge, along bridge to shellfish
Thunder beam 5-1 tops extend to the pier stud at irregular box-girder two ends across direction across bridge Bailey beam 5-2 and direction across bridge direction；Direction across bridge shellfish thunder
Set beam lower supporter to connect with irregular box-girder beam bottom mother plate above beam 5-2, both avoided middle building, overall row is met again
The bearing capacity of frame and stability requirement, so as to ensure that construction safety and construction speed；Due to being set respectively according to diverse location
Corresponding framed bent, therefore, it is possible to save construction cost；Simultaneously because on main deck door opening bowl button framed bent setting, disclosure satisfy that again
Have a good transport and communication network requirement.
The present invention passes through combination framed bent that can be with middle fabric structure crossed construction, it is ensured that whole multilayer bridge structure
Construction speed.
Although the present invention is disclosed as above with preferred embodiment, embodiment does not limit the present invention.This hair is not being departed from
Any equivalence changes done in bright spirit and scope or retouching, also belong to the protection domain of the present invention.Therefore it is of the invention
The content that should be defined using claims hereof of protection domain as standard.
Claims (10)
1. a kind of bent device of multilayer bridge structure, it is characterised in that the bent device of the multilayer bridge structure includes：
Join branch pagoda of bowls button framed bent (2), door opening bowl button framed bent (3), steel pipe column branch in the middle of the full hall bowl button framed bent (1) of pier, Bailey beam
Support (4), Bailey beam (5) and beam lower supporter；
The full hall bowl button framed bent (1) of handing-over pier is located at four handing-over pier stud positions of irregular box-girder；The full hall bowl button of handing-over pier
Thick pillar is carried out between framed bent (1) and adjacent pier stud using section bar to be connected；
Branch pagoda of bowls button framed bent (2) is located at the centre position on a main line bridge wherein width bridge floor in the middle of the Bailey beam；The door opening
Bowl button framed bent (3) is located on another width bridge floor of main line bridge；
The steel pipe column supports (4) totally four row, respectively positioned at the both sides of the every width bridge floor of main line bridge, and often row's steel pipe column support (4)
In, adjacent steel string supports are welded as a whole between (4) using shaped steel；
The Bailey beam (5) includes suitable bridge to Bailey beam (5-1) and direction across bridge Bailey beam (5-2)；It is described along bridge to Bailey beam (5-
1) it is fixedly connected on above the steel pipe column support (4), extends to the pier stud at irregular box-girder two ends to direction along bridge；The cross-bridges
The suitable bridge is across to Bailey beam (5-2) to detain to branch pagoda of bowls button framed bent (2) in the middle of Bailey beam (5-1), Bailey beam and door opening bowl
The top of framed bent (3), direction across bridge direction extends to the pier stud at irregular box-girder two ends；
The beam lower supporter is located at below the top of direction across bridge Bailey beam (5-2), irregular box-girder beam bottom mother plate.
2. a kind of bent device of multilayer bridge structure according to claim 1, it is characterised in that the Liang Dizhijiabao
Include：
Beam bottom bowl button framed bent (6) or the lumps of wood (7)；
When direction across bridge Bailey beam (5-2) is more than setting height threshold value away from irregular box-girder bottom girder end template distance, the beam is set
Bottom bowl button framed bent (6) is located at below the top of direction across bridge Bailey beam (5-2), irregular box-girder beam bottom mother plate, and using full hall bowl button
Rack form；
When direction across bridge Bailey beam (5-2) away from irregular box-girder bottom girder end template distance be less than setting height threshold value constantly, described in pad
The lumps of wood (7) is below direction across bridge Bailey beam (5-2) top, irregular box-girder beam bottom mother plate.
3. a kind of bent device of multilayer bridge structure according to claim 2, it is characterised in that
Plank is placed between the full hall bowl button framed bent (1) of the handing-over pier and its basis.
4. a kind of bent device of multilayer bridge structure according to claim 2, it is characterised in that
In the middle of the Bailey beam before the bottom of branch pagoda of bowls button framed bent (2) and main line bridge between place steel plate；
And/or,
Door opening bowl button framed bent (3) bottom and main line bridge before between place steel plate.
5. a kind of bent device of multilayer bridge structure according to claim 2, it is characterised in that
Observation station is laid on the direction across bridge Bailey beam (5-2).
6. a kind of a kind of bent device of multilayer bridge structure according to claim 1, it is characterised in that described multilayer
The bent device of bridge structure also includes：
The full hall bowl button framed bent set in the ring road pars basilaris pontis joined with main line bridge.
7. a kind of bent device of multilayer bridge structure according to claim 1, it is characterised in that
In branch pagoda of bowls button framed bent (2) and door opening bowl button framed bent (3) in the middle of the full hall bowl button framed bent (1) of handing-over pier, Bailey beam,
Vertical rod horizontal spacing is not less than horizontal spacing threshold, and longitudinal pitch is not less than to indulge spacing threshold, and step pitch is not less than step pitch threshold value；Edge
Short transverse, one of horizontal cross brace is then set at interval of the first interval threshold.
8. a kind of crossed construction method of multilayer bridge, it is characterised in that the crossed construction method of the multilayer bridge includes：
Step S101, sets up main line bridge box beam, and carry out main line bridge bridge deck concrete pavement based on main line bridge box beam；
Step S102, the pier stud positioned at the center of irregular box-girder is constructed；
All steel pipe columns at main line bridge bridge bottom respectively positioned at the every width both sides of main line bridge are supported (4) foundation construction by step S103
And the assembly of steel pipe column support (4)；Fabric structure in the middle of main line bridge is constructed simultaneously；
Step S104, sets up suitable bridge to Bailey beam (5-1) above steel pipe column support (4)；Then along bridge to Bailey beam (5-1)
Top sets up direction across bridge Bailey beam (5-2)；Fabric structure in the middle of main line bridge is constructed simultaneously；
Step S105, full hall bowl button bent foundation construction；Based on the full hall bowl button bent foundation, handing-over pier is set up in handing-over Dun Chu
Full hall bowl button framed bent (1)；Branch pagoda of bowls button framed bent (2), opposite side bridge floor in the middle of Bailey beam are set up on the side bridge floor of main line bridge
On set up door opening bowl button framed bent (3)；Beam lower supporter is set up on direction across bridge Bailey beam (5-2)；Simultaneously to being built in the middle of main line bridge
Thing structure is built to be constructed；
Step S106, special-shaped box girder construction, and suspend during special-shaped box girder construction fabric structure in the middle of main line bridge is applied
Work.
9. the crossed construction method of a kind of multilayer bridge according to claim 8, it is characterised in that the multilayer bridge
Crossed construction method also includes：
Step S100 before step S101, i.e., set full hall bowl button framed bent in the ring road pars basilaris pontis joined with main line bridge.
10. a kind of crossed construction method of multilayer bridge according to claim 8 or claim 9, it is characterised in that the multilayer bridge
The crossed construction method of beam also includes：
After the completion of Bailey beam erection, observation station is laid in direction across bridge Bailey beam (5-2), and observation is laid in the observation station
Equipment；
During step S106 carries out special-shaped box girder construction, Bailey beam amount of deflection sinking is monitored by the scope, such as
Occur the excessive abnormal conditions of amount of deflection, suspend follow-up irregular box-girder construction.
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| CN111455800B (en) * | 2020-03-12 | 2021-04-27 | 中铁大桥局集团有限公司 | Construction method of double-layer double-width bridge with wide top and narrow bottom |
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| CN107245953B (en) | 2018-12-28 |
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