CN105421213B - Construction method for main span structure of rigid frame bridge - Google Patents
Construction method for main span structure of rigid frame bridge Download PDFInfo
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- CN105421213B CN105421213B CN201510844316.3A CN201510844316A CN105421213B CN 105421213 B CN105421213 B CN 105421213B CN 201510844316 A CN201510844316 A CN 201510844316A CN 105421213 B CN105421213 B CN 105421213B
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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
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
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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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Abstract
The invention discloses a construction method for a main span structure of a rigid frame bridge. The main span structure of the rigid frame bridge comprises a truss girder section, a left-side prestressed concrete box girder section and a right-side prestressed concrete box girder section, wherein the left-side prestressed concrete box girder section is connected with the left end of the truss girder section through a left-side reinforced concrete connection section; the right-side prestressed concrete box girder section is connected with the right end of the truss girder section through a right-side reinforced concrete connection section. The method comprises the steps that the left-side reinforced concrete connection section and the right-side reinforced concrete connection section are constructed at the same time, then truss girders are constructed on the left-side reinforced concrete connection section and the right-side reinforced concrete connection section at the same time section by section, and finally splicing of the truss girder section is finished. The construction method is easy and convenient to operate, and construction of the main span structure of the rigid frame bridge can be rapidly finished.
Description
Technical field
The invention belongs to bridge technology field, is specifically related to a kind of construction method of rigid frame bridge main span structure.
Background technology
Rigid frame bridge has the advantages that span ability is larger, driving is smoothed out, anti-seismic performance is good, better economy, extensively
It is applied in the bridge constructions of landform such as various leap rivers, mountain valley.Large span rigid frame bridge generally adopts prestressed concrete box
Type section, with the growth of bridge Years Of Service, generally there are the diseases such as span centre concrete cracking, downwarp in the rigid frame bridge of large span
Evil, has had a strong impact on safety and the durability of bridge.Due to the universality of large span rigid frame bridge middle span deflexion, and this kind of disease
It is difficult to repair, China's rigid frame bridge of the no longer newly-built main span length in more than 200m.The cracking of Prestressed concrete rigid-frame bridge
And middle span deflexion is caused by many-sided reason, wherein, the shrinkage and creep of concrete, the lax of presstressed reinforcing steel may all cause
The cracking of rigid frame bridge.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency of the prior art, there is provided a kind of rigid frame bridge main span structure.This is firm
Structure bridge main span structure can effectively overcome middle span deflexion, the problem of cracking, effectively increase the safety of bridge structure and resistance to
Long property.
For achieving the above object, the technical scheme of rigid frame bridge main span structure employing of the present invention is：Rigid frame bridge main span structure, its
It is characterised by：Including truss beam section, be arranged on left side bridge pier on left side prestressed concrete box girder section and be arranged on right side bridge
Right side prestressed concrete box girder section on pier, the left side prestressed concrete box girder section are connected by left side armored concrete
Section is connected with the left end of the truss beam section, and the right side prestressed concrete box girder section is connected by right side armored concrete
Section is connected with the right-hand member of the truss beam section, the truss beam section, left side prestressed concrete box girder section, left side reinforced concrete
Concrete slab is provided with native linkage section, right side armored concrete linkage section and right side prestressed concrete box girder section.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：The left side armored concrete linkage section includes left side reinforcing bar
Concrete body and the multiple left side longitudinal directions steel plate being fixedly connected with the left end of the truss beam section, multiple left side longitudinal direction steel
Plate is laid along the bearing of trend of concrete slab, and multiple left side longitudinal direction steel plates stretch into the left side armored concrete
Body, offers through hole on multiple left side longitudinal direction steel plates, multiple left side longitudinal direction steel plates are by through the through hole
Left side transverse steel be connected, the mutual colligation of cage bar or weldering of the left side transverse steel and left side armored concrete linkage section
Connect.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：Two neighboring left side longitudinal direction steel plate passes through the horizontal steel plate in left side
It is connected, offers left side prestressed anchor hole on the horizontal steel plate in the left side, in the left side prestressed concrete box girder section
Left side prestressing tendon be anchored on the horizontal steel plate in the left side by the left side prestressed anchor hole.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：The right side armored concrete linkage section includes right side reinforcing bar
Concrete body and the multiple right side longitudinal directions steel plate being fixedly connected with the truss beam section right-hand member, multiple right side longitudinal direction steel plates
Bearing of trend along concrete slab is laid, and multiple right side longitudinal direction steel plates stretch into the right side armored concrete sheet
Body, offers through hole on multiple right side longitudinal direction steel plates, multiple right side longitudinal direction steel plates are by through the through hole
Right side transverse steel is connected, the mutual colligation of cage bar or weldering of the right side transverse steel and right side armored concrete linkage section
Connect.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：Two neighboring right side longitudinal direction steel plate passes through the horizontal steel plate in right side
It is connected, offers right side prestressed anchor hole on the horizontal steel plate in the right side, in the right side prestressed concrete box girder section
Right side prestressing tendon be anchored on the horizontal steel plate in the right side by the right side prestressed anchor hole.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：The truss beam section is sequentially connected with by more piece girder truss and is constituted,
Often saving girder truss includes the first plane girder and the second plane girder that are parallel to each other, and for connect the first plane girder and
The space truss of the second plane girder, first plane girder include the first top boom and the first lower boom and for connecting
Multiple first vertical web rods of first top boom and the first lower boom, between first top boom and the first vertical web rod and
The first diagonal web member is provided between first lower boom and the first vertical web rod；Second plane girder include the second top boom and
Second lower boom and multiple second vertical web rods for connecting second top boom and the second lower boom, described second winds up
The second diagonal web member is provided between bar and the second vertical web rod and between the second lower boom and the second vertical web rod；The space purlin
Frame includes the multiple cross tubes for connecting the first top boom and the second top boom and for connecting the first lower boom and second
Multiple sheer poles of lower boom, multiple cross tubes are connected by upper vertical bar, and multiple sheer poles pass through lower vertical bar phase
Connection, the first vertical web rod positioned at the first plane girder end and the second straight abdomen positioned at the second plane girder end
Bar is connected by tranverse connecting rod, is provided with vertical connecting rod on the tranverse connecting rod, the upper end of the vertical connecting rod and corresponding thereto upper
Cross bar is connected, and the lower end of the vertical connecting rod is connected with sheer pole corresponding thereto, first top boom and upper vertical bar
Between and the second top boom and upper vertical bar between be provided with hound, between first lower boom and lower vertical bar and
Lower hound is provided between second lower boom and lower vertical bar.
Above-mentioned rigid frame bridge main span structure, it is characterised in that：First top boom and the second top boom are by shearing
Nail is connected with the concrete slab in the truss beam section.
For rigid frame bridge main span structure of fast and effectively constructing, present invention also offers a kind of rigid frame bridge main span structure
Construction method.The technical scheme that the construction method of rigid frame bridge main span structure of the present invention is adopted is：A kind of rigid frame bridge main span structure
Construction method, it is characterised in that comprise the following steps：
Step one, using support cast-in-place method or cast-in-place cantilever method on the left of the construction on the bridge pier of left side prestressed concrete box girder
Section, and while on the bridge pier of right side prestressed concrete box girder section on the right side of construction；
Step 2, on the left of the colligation in the left side prestressed concrete box girder section armored concrete linkage section reinforcing bar
Cage, the steel reinforcement cage of armored concrete linkage section on the right side of the colligation in the right side prestressed concrete box girder section；
Step 3, by multiple longitudinal direction Interal fixations of the left sides with through hole first segment girder truss left end, and using left
Multiple left side longitudinal direction steel plates are connected by side transverse steel；By multiple longitudinal directions of the right sides with through hole Interal fixations second
The right-hand member of section truss, and multiple right side longitudinal direction steel plates are connected using right side transverse steel；
Step 4, lift by crane the first segment truss and be located at reinforcing bar with the left side armored concrete linkage section
The corresponding position of cage, lifts by crane the second section truss and is located at reinforcing bar with the right side armored concrete linkage section
The corresponding position of cage；
Step 5, by the cage bar of the steel reinforcement cage of left side armored concrete linkage section and left side transverse steel phase colligation or
Welding, by the cage bar of the steel reinforcement cage of right side armored concrete linkage section and right side transverse steel phase colligation or welding；
Step 6, by being reserved with the horizontal steel plate in left side in left side prestressed anchor hole by two neighboring left side longitudinal direction steel plate
It is connected；Two neighboring right side longitudinal direction steel plate is connected by being reserved with right side prestressed anchor hole；
Step 7, between the horizontal steel plate in the left side and left side prestressed concrete box girder section formwork casting concrete
To form left side armored concrete linkage section, and left side prestressed concrete is reserved in the left side armored concrete linkage section
The left side prestress pipe that left side prestressing tendon in native box beam section is passed through；On the right side, horizontal steel plate is mixed with right side prestressing force
Formwork casting concrete is to form right side armored concrete linkage section between solidifying soil box beam section, and in the right side reinforced concrete
The right side prestress pipe that the right side prestressing tendon being reserved in native linkage section in the prestressed concrete box girder section of right side is passed through；
Left side prestressed concrete described in step 8, the concrete curing post-stretching in the left side armored concrete linkage section
Left side prestressing tendon in native box beam section, and make one end of the left side prestressing tendon pass through the left side prestressed anchor hole anchor
Gu on the horizontal steel plate in the left side；Described in concrete curing post-stretching in the right side armored concrete linkage section, right side is pre-
Right side prestressing tendon in prestressed concrete box beam section, and make the right side prestressing tendon pass through the right side prestressed anchor hole
It is anchored on the horizontal steel plate in the right side；
Step 9, assembled more piece truss is gradually lifted by crane between the first segment girder truss and the second section girder truss
Beam, until complete the assembly of whole truss beam section；
Step 10, in the truss beam section, left side prestressed concrete box girder section, left side armored concrete linkage section,
Cast-in-place concrete floorings on right side armored concrete linkage section and right side prestressed concrete box girder section, so that complete rigid frame bridge
The construction of main span structure.
Above-mentioned construction method, it is characterised in that：In step 8, the cast-in-place concrete floorings in the truss beam section
When, first WELDING STUDS is welded on the top boom of the truss beam section, then in the truss beam section, cast-in-place concrete is formed again
Concrete slab.
Present invention also offers a kind of rigid frame bridge with good safety and durability.The skill that rigid frame bridge of the present invention is adopted
Art scheme is：A kind of rigid frame bridge, it is characterised in that：Including above-mentioned rigid frame bridge main span structure.
The present invention has advantages below compared with prior art：
1st, rigid frame bridge main span structure of the present invention passes through to arrange truss beam section, and passes through left side armored concrete linkage section by purlin
Section of setting a roof beam in place is connected with left side prestressed concrete box girder section, by right side armored concrete linkage section by truss beam section and right side
Prestressed concrete box girder section is connected, so that girder truss section is located at span centre position, due to replacing concrete using steel truss
Box beam section, so that the rigid frame bridge main span structure can effectively overcome middle span deflexion, the problem of cracking, effectively increases bridge
The safety of girder construction and durability, and truss beam section is adopted, the deadweight of main span structure can be mitigated, increase main span structure
Span.
2nd, rigid frame bridge main span structure of the present invention is mixed with effectively connection truss beam section and left side reinforcing bar by left side longitudinal direction steel plate
Solidifying soil linkage section, and while by the left side transverse steel phase on the cage bar of left side armored concrete linkage section and left side longitudinal steel plate
Connection, further increases the bonding strength of truss frame for connecting beam section and left side armored concrete linkage section；In the same manner, it is vertical by right side
To steel plate with effectively connection truss beam section and right side armored concrete linkage section, and while by right side armored concrete linkage section
Cage bar is connected with the right side transverse steel on the steel plate of right side longitudinal direction, further increases truss frame for connecting beam section and right side reinforcing bar is mixed
The bonding strength of solidifying soil linkage section.
3rd, rigid frame bridge main span structure of the present invention is by arranging the horizontal steel plate in left side so that multiple left sides longitudinal direction steel plate is connected as
One entirety, and by the left side prestressing tendon in the prestressed concrete box girder section of left side by left side prestressed concrete box girder
Section, left side armored concrete linkage section and truss beam section are securely attached to together；In the same manner, by arrange right side laterally steel plate with
Multiple right side longitudinal directions steel plate is made to be connected as an entirety, and by the right side prestressing tendon in the prestressed concrete box girder section of right side
Right side prestressed concrete box girder section, right side armored concrete linkage section and truss beam section are securely attached to together.
4th, the construction method of rigid frame bridge main span structure of the present invention, operates very easy, can be rapidly completed the firm structure
The construction operation of bridge main span structure, and girder truss is often saved by lifting section construction, construction speed is accelerated, and is constructed
Truss beam section, additionally it is possible to as construction concrete slab operation platform, facilitate construction.
5th, rigid frame bridge of the present invention, by using above-mentioned rigid frame bridge main span structure so that the rigid frame bridge avoids span centre and opens
Split, the problem of downwarp, enhance service life and the safety of rigid frame bridge.
Below by drawings and Examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 is the structural representation of rigid frame bridge main span structure of the present invention.
Fig. 2 is left side prestressed concrete box girder section and the connection of left side armored concrete in rigid frame bridge main span structure of the present invention
The annexation schematic diagram of section.
Fig. 3 is the A-A sectional drawings in Fig. 2.
Fig. 4 is right side prestressed concrete box girder section and the connection of right side armored concrete in rigid frame bridge main span structure of the present invention
The annexation schematic diagram of section.
Fig. 5 is the B-B sectional drawings in Fig. 4.
Fig. 6 is the C-C sectional drawings in Fig. 4.
Fig. 7 is the enlarged drawing at D in Fig. 6.
Fig. 8 be rigid frame bridge main span structure of the present invention truss beam section in one section girder truss structural representation.Reference
Explanation:
1 left side bridge pier；2 left side prestressed concrete box girder sections；
Prestressing tendon on the left of 2-1；3 left side armored concrete linkage sections；
Armored concrete body on the left of 3-1；Longitudinal steel plate on the left of 3-2；
Horizontal steel plate on the left of 3-3；Prestressed anchor hole on the left of 3-4；
4 truss beam sections；The first plane girders of 4-1；
The first top booms of 4-1-1；The first lower booms of 4-1-2；
The first vertical web rods of 4-1-3；The first diagonal web members of 4-1-4；
The second plane girders of 4-2；The second top booms of 4-2-1；
The second lower booms of 4-2-2；The second vertical web rods of 4-2-3；
The second diagonal web members of 4-2-4；4-3 space trusses；
4-3-1 cross tubes；4-3-2 sheer poles；
4-3-3 upper vertical bars；4-3-4 lower vertical bars；
4-3-5 tranverse connecting rods；4-3-6 vertical connecting rods；
The upper hounds of 4-3-7；Hound under 4-3-8；
5 right side armored concrete linkage sections；Armored concrete body on the right side of 5-1；
Longitudinal steel plate on the right side of 5-2；Horizontal steel plate on the right side of 5-3；
Prestressed anchor hole on the right side of 5-4；6 right side prestressed concrete box girder sections；
Prestressing tendon on the right side of 6-1；7 concrete slabs；
8 right side bridge piers；9 WELDING STUDSs.
Specific embodiment
A kind of rigid frame bridge main span structure as shown in Figure 1, it is pre- including truss beam section 4, the left side being arranged on the bridge pier 1 of left side
Prestressed concrete box beam section 2 and the right side prestressed concrete box girder section 6 being arranged on the bridge pier 8 of right side, the left side prestressing force
Concrete box beam section 2 is connected with the left end of the truss beam section 4 by left side armored concrete linkage section 3, and the right side is pre-
Prestressed concrete box beam section 6 is connected with the right-hand member of the truss beam section 4 by right side armored concrete linkage section 5, the purlin
Section of setting a roof beam in place 4, left side prestressed concrete box girder section 2, left side armored concrete linkage section 3,5 and of right side armored concrete linkage section
Concrete slab 7 is provided with right side prestressed concrete box girder section 6.
In the present embodiment, the rigid frame bridge main span structure is by arranging truss beam section 4, and is connected by left side armored concrete
Truss beam section 4 is connected by section 3 with left side prestressed concrete box girder section 2, by right side armored concrete linkage section 5 by truss
Beam section 4 is connected with right side prestressed concrete box girder section 6, so that truss beam section 4 is located at span centre position, due to adopting steel truss
Frame replaces concrete box beam section, so that the rigid frame bridge main span structure can effectively overcome middle span deflexion, the problem of cracking,
Safety and the durability of bridge structure is effectively increased, and adopts truss beam section 4, the deadweight of main span structure can be mitigated,
The span of increase main span structure.
As shown in Figures 2 and 3, the left side armored concrete linkage section 3 include left side armored concrete body 3-1 and with
The equal edge of the multiple left sides longitudinal direction steel plate 3-2 that the left end of the truss beam section 4 is fixedly connected, the multiple left side longitudinal direction steel plate 3-2
The bearing of trend of concrete slab 7 is laid, and multiple left side longitudinal direction steel plate 3-2 stretch into the left side armored concrete sheet
Body 3-1, offers through hole on multiple left side longitudinal direction steel plate 3-2, and multiple left side longitudinal direction steel plate 3-2 are by through institute
The left side transverse steel for stating through hole is connected, and the left side transverse steel is mutual with the cage bar of left side armored concrete linkage section 3
Colligation or welding.
In the present embodiment, by stretching into multiple left side longitudinal direction steel plate 3-2 of left side armored concrete body 3-1 to realize a left side
The connection of side armored concrete linkage section 3 and the truss beam section 4, and while by the cage bar of left side armored concrete linkage section 3
With left side transverse steel colligation or welding, furthermore achieved that left side armored concrete linkage section 3 and the girder truss
The connection of section 4, so that reach firmly being rigidly connected for left side armored concrete linkage section 3 and the truss beam section 4.
As shown in Figures 2 and 3, two neighboring left side longitudinal direction steel plate 3-2 is connected by the horizontal steel plate 3-3 in left side, described
Left side prestressed anchor hole 3-4, the left side in the left side prestressed concrete box girder section 2 are offered on the horizontal steel plate 3-3 in left side
Side prestressing tendon 2-1 is anchored on the horizontal steel plate 3-3 in the left side by the left side prestressed anchor hole 3-4.
In the present embodiment, by arrange left side laterally steel plate 3-3 so that multiple left sides longitudinal direction steel plate 3-2 be connected as one it is whole
Body, and by the left side prestressing tendon 2-1 in left side prestressed concrete box girder section 2 by left side prestressed concrete box girder section 2,
Left side armored concrete linkage section 3 and truss beam section 4 are securely attached to together.
As shown in Figure 4 and Figure 5, the right side armored concrete linkage section 5 include right side armored concrete body 5-1 and with
Multiple right side longitudinal direction steel plate 5-2 that 4 right-hand member of truss beam section is fixedly connected, multiple right side longitudinal direction steel plate 5-2 are along mixed
The bearing of trend of solidifying soil floorings 7 is laid, and multiple right side longitudinal direction steel plate 5-2 stretch into the right side armored concrete body
5-1, offers through hole on multiple right side longitudinal direction steel plate 5-2, and multiple right side longitudinal direction steel plate 5-2 are described by passing through
The right side transverse steel of through hole is connected, and the cage bar of the right side transverse steel and right side armored concrete linkage section 5 is mutually tied up
Prick or weld.
In the present embodiment, by stretching into multiple right side longitudinal direction steel plate 5-2 of right side armored concrete body 5-1 to realize the right side
The connection of side armored concrete linkage section 5 and the truss beam section 4, and while by the cage bar of right side armored concrete linkage section 5
With right side transverse steel colligation or welding, furthermore achieved that right side armored concrete linkage section 5 and the girder truss
The connection of section 4, so that reach firmly being rigidly connected for right side armored concrete linkage section 5 and the truss beam section 4.
As shown in Figure 4 and Figure 5, two neighboring right side longitudinal direction steel plate 5-2 is connected by the horizontal steel plate 5-3 in right side, described
Right side prestressed anchor hole 5-4, the right side in the right side prestressed concrete box girder section 6 are offered on the horizontal steel plate 5-3 in right side
Side prestressing tendon 6-1 is anchored on the horizontal steel plate 5-3 in the right side by the right side prestressed anchor hole 5-4.
In the present embodiment, by arrange right side laterally steel plate 5-3 so that multiple right sides longitudinal direction steel plate 5-2 be connected as one it is whole
Body, and by the right side prestressing tendon 6-1 in right side prestressed concrete box girder section 6 by right side prestressed concrete box girder section 6,
Right side armored concrete linkage section 5 and truss beam section 4 are securely attached to together.
As shown in Figure 6 and Figure 7, the first top boom 4-1-1 and the second top boom 4-2-1 pass through WELDING STUDS 9 and institute
The concrete slab 7 stated in truss beam section 4 is connected.
Truss beam section 4 is sequentially connected with by more piece girder truss and is constituted as described in Figure 8, often save that girder truss includes being parallel to each other the
One plane girder 4-1 and the second plane girder 4-2, and for connecting the first plane girder 4-1's and the second plane girder 4-2
Space truss 4-3, the first plane girder 4-1 include the first top boom 4-1-1 and the first lower boom 4-1-2 and for connecting
Meet multiple first vertical web rod 4-1-3 of the first top boom 4-1-1 and the first lower boom 4-1-2, the first top boom 4-
First is provided between 1-1 and the first vertical web rod 4-1-3 and between the first lower boom 4-1-2 and the first vertical web rod 4-1-3
Diagonal web member 4-1-4；The second plane girder 4-2 includes the second top boom 4-2-1 and the second lower boom 4-2-2 and for connecting
Meet multiple second vertical web rod 4-2-3 of the second top boom 4-2-1 and the second lower boom 4-2-2, the second top boom 4-
Second is provided between 2-1 and the second vertical web rod 4-2-3 and between the second lower boom 4-2-2 and the second vertical web rod 4-2-3
Diagonal web member 4-2-4；The space truss 4-3 is included for connecting the multiple of the first top boom 4-1-1 and the second top boom 4-2-1
The cross tube 4-3-1 and multiple sheer pole 4-3-2 for connecting the first lower boom 4-1-2 and the second lower boom 4-2-2, it is multiple
The cross tube 4-3-1 is connected by upper vertical bar 4-3-3, and multiple sheer pole 4-3-2 are connected by lower vertical bar 4-3-4
Connect, positioned at the first vertical web rod 4-1-3 of the first plane girder 4-1 ends and positioned at the second plane girder 4-2 ends
The second vertical web rod 4-2-3 be connected by tranverse connecting rod 4-3-5, be provided with vertical connecting rod 4-3-6, institute on the tranverse connecting rod 4-3-5
The upper end for stating vertical connecting rod 4-3-6 is connected with cross tube 4-3-1 corresponding thereto, the lower end of the vertical connecting rod 4-3-6 and with
Its corresponding sheer pole 4-3-2 is connected, and between the first top boom 4-1-1 and upper vertical bar 4-3-3 and second winds up
Hound 4-3-7, the first lower boom 4-1-2 and lower vertical bar 4-3- is provided between bar 4-2-1 and upper vertical bar 4-3-3
Lower hound 4-3-8 is provided between 4 and between the second lower boom 4-2-2 and lower vertical bar 4-3-4.
In the present embodiment, the often section girder truss in the truss beam section 4 is by the first plane girder 4-1, the second plane girder
4-2 and the space truss 4-3 connections for connecting the first plane girder 4-1 and the second plane girder 4-2, and the first plane purlin
Frame 4-1, the second plane girder 4-2 and space truss 4-3 are the load-carrying members of stiff super, by space truss 4-3 by
One plane girder 4-1 and the second plane girder 4-2 are connected to form bending resistance, torsional rigidity greatly, and then by more piece girder truss sequentially
The big truss beam section 4 of bending resistance, torsional rigidity is connected and composed, such that it is able to effectively overcome the bridge defect of middle span deflexion.
In the present embodiment, a kind of rigid frame bridge, including above-mentioned rigid frame bridge main span structure.By using above-mentioned rigid frame bridge master
Across structure so that the rigid frame bridge avoids span centre cracking, the problem of downwarp, enhances the service life and safety of the rigid frame bridge
Property.
A kind of construction method of the rigid frame bridge main span structure in the present embodiment, comprises the following steps：
Step one, using support cast-in-place method or cast-in-place cantilever method on the left of the construction on left side bridge pier 1 prestressed concrete box
Beam section 2, and while on the right side bridge pier 8 prestressed concrete box girder section 6 on the right side of construction；
Step 2, on the left of the colligation in the left side prestressed concrete box girder section 2 armored concrete linkage section 3 reinforcing bar
Cage, the steel reinforcement cage of armored concrete linkage section 5 on the right side of the colligation in the right side prestressed concrete box girder section 6；
Step 3, the left end that the multiple longitudinal direction of the left side with through hole steel plate 3-2 are fixed on first segment girder truss, and adopt
Multiple left side longitudinal direction steel plate 3-2 are connected by left side transverse steel；Will be the multiple longitudinal direction of the right side with through hole steel plate 5-2 solid
The right-hand member of second section truss is scheduled on, and multiple right side longitudinal direction steel plate 5-2 is connected using right side transverse steel；
Step 4, lift by crane the first segment truss and be located at steel with the left side armored concrete linkage section 3
The corresponding position of muscle cage, lifts by crane the second section truss and is located at and the right side armored concrete linkage section 5
The corresponding position of steel reinforcement cage；
Step 5, by the cage bar of the steel reinforcement cage of left side armored concrete linkage section 3 and the left side transverse steel phase colligation
Or welding, by the cage bar of the steel reinforcement cage of right side armored concrete linkage section 5 and right side transverse steel phase colligation or welding；
Step 6, by be reserved with left side prestressed anchor hole 3-4 the horizontal steel plate 3-3 in left side two neighboring left side is indulged
It is connected to steel plate 3-2；Two neighboring right side longitudinal direction steel plate 5-2 is connected by being reserved with right side prestressed anchor hole 5-4；
Step 7, formwork pour mixed between the horizontal steel plate 3-3 in the left side and left side prestressed concrete box girder section 2
Solidifying soil is with armored concrete linkage section 3 on the left of being formed, and in advance should on the left of being reserved in the left side armored concrete linkage section 3
The left side prestress pipe that left side prestressing tendon 2-1 in power concrete box beam section 2 is passed through；In the horizontal steel plate 4-3 in the right side
Formwork casting concrete to be to form right side armored concrete linkage section 5 between right side prestressed concrete box girder section 6, and
Right side prestressing tendon 6-1 on the right side of being reserved in the right side armored concrete linkage section 5 in prestressed concrete box girder section 6 wears
The right side prestress pipe crossed；
Described in step 8, the concrete curing post-stretching in the left side armored concrete linkage section 3, left side prestressing force is mixed
Left side prestressing tendon 2-1 in solidifying soil box beam section 2, and make one end of the left side prestressing tendon 2-1 in advance should by the left side
Power anchorage hole 3-4 is anchored on the horizontal steel plate 3-3 in the left side；Support in the concrete of the right side armored concrete linkage section 5
Right side prestressing tendon 6-1 in right side prestressed concrete box girder section 6 described in raw post-stretching, and make the right side prestressing tendon 6-
1 is anchored on the horizontal steel plate 5-3 in the right side by the right side prestressed anchor hole 5-4；
Step 9, assembled more piece truss is gradually lifted by crane between the first segment girder truss and the second section girder truss
Beam, until complete the assembly of whole truss beam section 4；
Step 10, in the truss beam section 4, the prestressed concrete box girder section 2, left side armored concrete linkage section of left side
3rd, cast-in-place concrete floorings 7 in right side armored concrete linkage section 5 and right side prestressed concrete box girder section 6, so as to complete
The construction of rigid frame bridge main span structure.
In the present embodiment, the construction method of the rigid frame bridge main span structure is by left side armored concrete linkage section of constructing simultaneously
3 and right side armored concrete linkage section 5, then the girder truss while on the right side of being constructed on left side armored concrete linkage section 3 section by section
Side armored concrete linkage section 5 is constructed girder truss section by section, finally completes the assembly of truss beam section 4.Which is easy to operate, same from both sides
When construct to span centre, can be rapidly completed the construction operation of the rigid frame bridge main span structure, and often save girder truss by lifting point
Section construction, accelerates construction speed, and the truss beam section 4 constructed, additionally it is possible to used as the construction of construction concrete slab 7
Platform, facilitates construction.
In the present embodiment, eight the step of the construction method of the rigid frame bridge main span structure in, it is cast-in-place in the truss beam section 4
During concrete slab 7, first WELDING STUDS 9 is welded on the top boom of the truss beam section 4, then again in the truss beam section 4
Upper cast-in-place concrete forms concrete slab 7.By arranging WELDING STUDS 9, truss beam section 4 and concrete bridge is further increased
The bonding strength of panel 7.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure transformation that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (4)
1. a kind of construction method of rigid frame bridge main span structure, rigid frame bridge main span structure include truss beam section (4), are arranged on left side bridge
Left side prestressed concrete box girder section (2) and the right side prestressed concrete box girder being arranged on right side bridge pier (8) on pier (1)
Section (6), described left side prestressed concrete box girder section (2) pass through left side armored concrete linkage section (3) and the truss beam section
(4) left end is connected, and described right side prestressed concrete box girder section (6) pass through right side armored concrete linkage section (5) and institute
The right-hand member for stating truss beam section (4) is connected, truss beam section (4), left side prestressed concrete box girder section (2), left side reinforcing bar
It is provided with concrete linkage section (3), right side armored concrete linkage section (5) and right side prestressed concrete box girder section (6)
Concrete slab (7)；Described left side armored concrete linkage section (3) include left side armored concrete body (3-1) and with institute
State multiple left sides longitudinal direction steel plate (3-2) that the left end of truss beam section (4) is fixedly connected, multiple left sides longitudinal direction steel plate (3-2)
Bearing of trend along concrete slab (7) is laid, and multiple left sides longitudinal direction steel plate (3-2) stretch into the left side reinforcing bar
Concrete body (3-1), offers through hole, multiple left side longitudinal direction steel plates on multiple left sides longitudinal direction steel plate (3-2)
(3-2) it is connected by the left side transverse steel through the through hole, the left side transverse steel is connected with left side armored concrete
Connect the mutual colligation of cage bar or welding of section (3)；Two neighboring left side longitudinal direction steel plate (3-2) passes through left side horizontal steel plate (3-3) phase
Connection, offers left side prestressed anchor hole (3-4), the left side prestressed concrete on left side horizontal steel plate (3-3)
It is horizontal that left side prestressing tendon (2-1) in box beam section (2) is anchored at the left side by left side prestressed anchor hole (3-4)
On steel plate (3-3)；Described right side armored concrete linkage section (5) include right side armored concrete body (5-1) and with the purlin
Multiple right sides longitudinal direction steel plate (5-2) that section of setting a roof beam in place (4) right-hand member is fixedly connected, multiple right sides longitudinal direction steel plate (5-2) are along mixed
The bearing of trend of solidifying soil floorings (7) is laid, and multiple right sides longitudinal direction steel plate (5-2) stretch into the right side armored concrete
Body (5-1), offers through hole on multiple right sides longitudinal direction steel plate (5-2), multiple right sides longitudinal direction steel plate (5-2) are led to
The right side transverse steel crossed through the through hole is connected, the right side transverse steel and right side armored concrete linkage section (5)
The mutual colligation of cage bar or welding；Two neighboring right side longitudinal direction steel plate (5-2) is connected by right side horizontal steel plate (5-3), institute
State right side prestressed anchor hole (5-4), the right side prestressed concrete box girder section is offered on the horizontal steel plate (5-3) in right side
(6) the right side prestressing tendon (6-1) in is anchored at the horizontal steel plate in the right side by right side prestressed anchor hole (5-4)
(5-3) on；
Characterized in that, the construction method of rigid frame bridge main span structure is comprised the following steps：
Step one, left side prestressed concrete box girder of being constructed on left side bridge pier (1) using support cast-in-place method or cast-in-place cantilever method
Section (2), and while construction right side prestressed concrete box girder section (6) on right side bridge pier (8)；
Step 2, on the left of the colligation on left side prestressed concrete box girder section (2) armored concrete linkage section (3) reinforcing bar
Cage, the steel reinforcement cage of armored concrete linkage section (5) on the right side of the colligation on right side prestressed concrete box girder section (6)；
Step 3, the left end that multiple longitudinal direction steel plate of left sides with through hole (3-2) are fixed on first segment girder truss, and using left
Multiple left sides longitudinal direction steel plate (3-2) are connected by side transverse steel；By multiple longitudinal direction steel plate of right sides with through hole (5-2)
The right-hand member of second section truss is fixed on, and multiple right sides longitudinal direction steel plate (5-2) is connected using right side transverse steel；
Step 4, lift by crane the first segment truss and be located at reinforcing bar with left side armored concrete linkage section (3)
The corresponding position of cage, lifts by crane the second section truss and is located at and right side armored concrete linkage section (5)
The corresponding position of steel reinforcement cage；
Step 5, by the cage bar of the steel reinforcement cage in left side armored concrete linkage section (3) and left side transverse steel phase colligation or
Welding, by the cage bar of the steel reinforcement cage on right side armored concrete linkage section (5) and right side transverse steel phase colligation or welding；
Step 6, by be reserved with left side prestressed anchor hole (3-4) left side horizontal steel plate (3-3) two neighboring left side is indulged
It is connected to steel plate (3-2)；By being reserved with right side prestressed anchor hole (5-4) by two neighboring right side longitudinal direction steel plate (5-2)
It is connected；
Step 7, formwork pour mixed between the horizontal steel plate in the left side (3-3) and left side prestressed concrete box girder section (2)
Solidifying soil is to form left side armored concrete linkage section (3), and is reserved for left side in left side armored concrete linkage section (3)
The left side prestress pipe that left side prestressing tendon (2-1) in prestressed concrete box girder section (2) is passed through；It is horizontal on the right side
Between steel plate (4-3) and right side prestressed concrete box girder section (6), formwork casting concrete are forming right side armored concrete
Linkage section (5), and be reserved in right side armored concrete linkage section (5) in right side prestressed concrete box girder section (6)
The right side prestress pipe that passes through of right side prestressing tendon (6-1)；
Left side prestressed concrete described in step 8, the concrete curing post-stretching in left side armored concrete linkage section (3)
Left side prestressing tendon (2-1) in native box beam section (2), and make the one end of left side prestressing tendon (2-1) pass through the left side
Prestressed anchor hole (3-4) is anchored on the horizontal steel plate in the left side (3-3)；In right side armored concrete linkage section (5)
Concrete curing post-stretching described in right side prestressing tendon (6-1) in right side prestressed concrete box girder section (6), and make described
Right side prestressing tendon (6-1) is anchored on the horizontal steel plate in the right side (5-3) by right side prestressed anchor hole (5-4)；
Step 9, gradually lift by crane assembled more piece girder truss between the first segment girder truss and the second section girder truss, directly
To the assembly for completing whole truss beam section (4)；
Step 10, on truss beam section (4), left side prestressed concrete box girder section (2), left side armored concrete linkage section
(3), cast-in-place concrete floorings (7) on right side armored concrete linkage section (5) and right side prestressed concrete box girder section (6),
So as to complete the construction of rigid frame bridge main span structure.
2. the construction method of a kind of rigid frame bridge main span structure according to claim 1, it is characterised in that：The truss beam section
(4) it is sequentially connected with by more piece girder truss and is constituted, often saving girder truss includes the first plane girder (4-1) for being parallel to each other and second flat
Face truss (4-2), and for connecting the space truss (4- of the first plane girder (4-1) and the second plane girder (4-2)
3), the first plane girder (4-1) includes the first top boom (4-1-1) and the first lower boom (4-1-2) and for connecting
Multiple first vertical web rod (4-1-3) of the first top boom (4-1-1) and the first lower boom (4-1-2), described first winds up
Between bar (4-1-1) and the first vertical web rod (4-1-3) and between the first lower boom (4-1-2) and the first vertical web rod (4-1-3)
It is provided with the first diagonal web member (4-1-4)；Second plane girder (4-2) is included under the second top boom (4-2-1) and second
Chord member (4-2-2) and the multiple second straight abdomens for connecting the second top boom (4-2-1) and the second lower boom (4-2-2)
Bar (4-2-3), between the second top boom (4-2-1) and the second vertical web rod (4-2-3) and the second lower boom (4-2-2) and
The second diagonal web member (4-2-4) is provided between second vertical web rod (4-2-3)；Space truss (4-3) is included for connecting
Multiple cross tubes (4-3-1) of the first top boom (4-1-1) and the second top boom (4-2-1) and for connect the first lower boom
(4-1-2) multiple sheer poles (4-3-2) of He the second lower boom (4-2-2), multiple cross tube (4-3-1) pass through upper vertical bar
(4-3-3) it is connected, multiple sheer pole (4-3-2) are connected by lower vertical bar (4-3-4), positioned at the first plane purlin
First vertical web rod (4-1-3) of frame (4-1) end and the second vertical web rod (4- positioned at the second plane girder (4-2) end
2-3) it is connected by tranverse connecting rod (4-3-5), on tranverse connecting rod (4-3-5), is provided with vertical connecting rod (4-3-6), the vertical connecting rod
(4-3-6) upper end is connected with cross tube (4-3-1) corresponding thereto, the lower end of vertical connecting rod (4-3-6) and and its
Corresponding sheer pole (4-3-2) is connected, between the first top boom (4-1-1) and upper vertical bar (4-3-3) and second
Hound (4-3-7), the first lower boom (4-1-2) is provided between top boom (4-2-1) and upper vertical bar (4-3-3)
Lower hound is provided with and lower vertical bar (4-3-4) between and between the second lower boom (4-2-2) and lower vertical bar (4-3-4)
(4-3-8)。
3. the construction method of a kind of rigid frame bridge main span structure according to claim 2, it is characterised in that：Described first winds up
Bar (4-1-1) and the second top boom (4-2-1) are by the concrete slab on WELDING STUDS (9) and truss beam section (4)
(7) it is connected.
4. the construction method of a kind of rigid frame bridge main span structure according to claim 1, it is characterised in that：In step 8,
On truss beam section (4) during cast-in-place concrete floorings (7), first on the top boom of truss beam section (4), welding is sheared
Nail (9), then on truss beam section (4), cast-in-place concrete forms concrete slab (7) again.
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| JP4765965B2 (en) * | 2007-03-12 | 2011-09-07 | Ｊｆｅエンジニアリング株式会社 | Revetment integrated ramen bridge and its construction method |
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| CN102561172A (en) * | 2010-12-22 | 2012-07-11 | 中交公路规划设计院有限公司 | Celled hybrid beam junction with composite connectors |
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