CN108560402A - A kind of prefabricated assembled bent cap and its construction method - Google Patents
A kind of prefabricated assembled bent cap and its construction method Download PDFInfo
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- CN108560402A CN108560402A CN201810785193.4A CN201810785193A CN108560402A CN 108560402 A CN108560402 A CN 108560402A CN 201810785193 A CN201810785193 A CN 201810785193A CN 108560402 A CN108560402 A CN 108560402A
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- bent cap
- segment
- prefabricated assembled
- spiral
- splice
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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
- E01D19/00—Structural or constructional details of bridges
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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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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
This application discloses a kind of prefabricated assembled bent cap and its construction methods, wherein prefabricated assembled bent cap includes：Multiple bent cap segments are embedded with multiple spirals in each bent cap segment, splice assembly between bent cap segment, and the position that the splice ends of each two adjacent bent cap segment correspond to spiral is provided with operation slot；The spiral of screw steel bar connector, each two adjacent bent cap segment is spliced by screw steel bar connector, and screw steel bar connector is contained in operation slot.The prefabricated assembled bent cap with it is existing so that three-stage structure is connected integral bent cap using deformed bar and slip casting compared with, spiral, screw steel bar connector are standardized product, it is not required to special equipment and customization is processed, simplify construction, construction cost is reduced, and using mechanical connection, after the completion of bent cap assembly, subsequent construction can be carried out on bent cap without waiting, shortens the construction period.
Description
Technical field
The present invention relates to technical field of bridge construction, more particularly to a kind of prefabricated assembled bent cap.The invention further relates to one
The construction method of the prefabricated assembled bent cap of kind.
Background technology
Prefabricated assembled bridge owner will include precast assembly girder and precast assembly bridge pier.The spelling of precast assembly girder
Industry is pretended usually to carry out at dead of night, other than night occupies part track assembling construction temporarily, construction period ground track base
Originally it remains unchanged.Not only the influence to atmospheric environment and road traffic had been reduced, but also has mitigated the interference caused by civil plantation.Bent cap is adopted
It can significantly be accelerated construction progress, and effectively reduced to existing road traffic without setting up holder with prefabricated assembled construction
Interference.
A kind of existing construction method of bent cap is three sections of liftings of bent cap point, specially：Bent cap is divided three sections respectively in work
Factory is prefabricated, after the completion of waiting for live pier column construction, will be segmented prefabricated bent cap and transports to scene, and segmental hoisting sets up bent cap,
Wear put and tensioned prestressing bar make three-stage structure connection it is integral, complete prestressed pore passage slip casting closing and sealing off and covering anchorage.But it is this
Construction method of bent cap keeps three-stage structure connection integral, dedicated prestressed stretch-draw is needed to set using deformed bar and slip casting
Standby and grouting equipment, cost is higher, and must etc. slurry intensities reach and can be carried out on bent cap after requirement (about 3~7 days) subsequently
Construction, duration are longer.
In conclusion how to solve the problems, such as that Coping Construction cost is high, long in time limit, become those skilled in the art urgently
It solves the problems, such as.
Invention content
In view of this, the purpose of the present invention is to provide a kind of prefabricated assembled bent cap, to reduce construction cost, shortening is applied
The work duration.
It is another object of the present invention to provide a kind of construction methods of prefabricated assembled bent cap, are made with reducing construction
Valence shortens the construction period.
In order to achieve the above objectives, the present invention provides following technical scheme：
A kind of prefabricated assembled bent cap, including：
Multiple bent cap segments are embedded with multiple spirals in each bent cap segment, splice between the bent cap segment
Assembly, the position that the splicing position of each two adjacent bent cap segment corresponds to the spiral are provided with operation slot；
The spiral of screw steel bar connector, each two adjacent bent cap segment passes through the spiral
Connector splices, and the screw steel bar connector is contained in the operation slot.
Preferably, in above-mentioned prefabricated assembled bent cap, after the bent cap segment splicing assembly, in the operation slot
Filled with concrete.
Preferably, in above-mentioned prefabricated assembled bent cap, the structural strength for the concrete filled in the operation slot
Structural strength grade of the grade higher than the concrete of the bent cap segment.
Preferably, in above-mentioned prefabricated assembled bent cap, between the splice ends of each two adjacent bent cap segment
It is provided with epoxy glue layer.
Preferably, in above-mentioned prefabricated assembled bent cap, the splice ends of bent cap segment described in each two are additionally provided with that
This groove bulge-structure being fitted and fixed with.
Preferably, in above-mentioned prefabricated assembled bent cap, the groove bulge-structure is along the prefabricated assembled bent cap
Lateral direction penetrating extend.
Preferably, in above-mentioned prefabricated assembled bent cap, the end of the spiral of each bent cap segment
Concordant with the end face of the splice ends of bent cap segment described in this, the splice ends of each bent cap segment correspond to the spiral
Position is both provided with the operation slot, and the end of the spiral is located in the operation slot.
Preferably, in above-mentioned prefabricated assembled bent cap, the bent cap segment is divided into bent cap root segment, bent cap standard
Segment, bent cap span centre close up segment and bent cap cantilever end segment；Bent cap root segment, bent cap standard segment and bent cap span centre
The both ends for closing up segment are splice ends, and one end of bent cap cantilever end segment is splice ends；Bent cap root segment be used for
Splice respectively with two adjacent bent cap standard segments at the both ends of precast pier assembly connection, bent cap root segment；
The both ends that bent cap span centre closes up segment are respectively used to splice with one end of two adjacent bent cap standard segments；The bent cap
The splice ends of cantilever end segment are used to splice with one end of bent cap standard segment.
Preferably, in above-mentioned prefabricated assembled bent cap, the both ends of bent cap root segment are both provided with groove；Institute
The one end for stating bent cap standard segment is provided with the protrusion being fitted and fixed with the groove, and the other end of bent cap standard segment is set
It is equipped with the groove；The both ends that the bent cap span centre closes up segment are both provided with the protrusion, bent cap cantilever end segment
One end is provided with protrusion.
The present invention also provides a kind of construction method of prefabricated assembled bent cap, step includes：
S100, be by both ends splice ends bent cap segment correspond to be lifted at least one precast pier and connect；
S200, it lifts remaining bent cap segment successively respectively in the both sides of the precast pier, and is connected by spiral
It connects device and connects the spiral of each two adjacent cover girder segment in the operation slot of bent cap segment, until completing prefabricated assembled
The splicing of bent cap.
Preferably, further include step after the step S200 in the construction method of above-mentioned prefabricated assembled bent cap
S300：Using the high concrete of the concrete structural strength grade than bent cap segment by the splicing of the two neighboring bent cap segment
The operation slot at end clog smooth.
Preferably, in the construction method of above-mentioned prefabricated assembled bent cap, in the step S200, two neighboring
Before bent cap segment is spliced, first smeared in the splice ends of one or two of each two adjacent cover girder segment bent cap segment
Epoxy glue layer.
Compared with prior art, the beneficial effects of the invention are as follows：
Prefabricated assembled bent cap provided by the invention includes multiple bent cap segments, is embedded in each bent cap segment multiple
Spiral splices assembly between bent cap segment, and the splicing position of each two adjacent bent cap segment corresponds to the position of spiral
It installs and is equipped with operation slot；The spiral of each two adjacent bent cap segment is spliced by screw steel bar connector, and screw thread
Reinforcing bar connector is contained in handle hole.The prefabricated assembled bent cap is spliced by multiple bent cap segments, and passes through screw-thread steel
The assembly of bent cap can be completed in the spiral being directly connected in two neighboring bent cap segment in operating slot for muscle connector, with
It is existing to make three-stage structure connect integral bent cap using deformed bar and slip casting to compare, do not need dedicated prestressing force
Draw equipment and grouting equipment, spiral, screw steel bar connector are standardized product used in bent cap segment, are not required to special
Equipment and customization are processed, and are simplified construction, are reduced construction cost, and slurry intensities need not be waited to reach requirement (about 3~7 days)
After could carry out subsequent construction on bent cap, this bent cap segment is using mechanical connection, after the completion of bent cap assembly, without waiting for i.e.
Subsequent construction can be carried out on bent cap, shorten the construction period.
In the construction method of prefabricated assembled bent cap provided by the invention, using the bent cap segment in the present invention, first by two
End is that the bent cap segment correspondence of splice ends is lifted at least one precast pier and connects；Distinguish in the both sides of precast pier
Remaining bent cap segment is lifted successively, and each two phase is connected in the operation slot of bent cap segment by screw steel bar connector
The spiral of adjacent bent cap segment, until completing the splicing of prefabricated assembled bent cap.Deformed bar and note are used with existing
Starching, which makes three-stage structure connect integral bent cap, compares, does not need dedicated prestress tensioning equipment and grouting equipment, reduce
Construction cost, and subsequent construction could be carried out on bent cap after slurry intensities need not be waited to reach requirement (about 3~7 days), shorten
Construction period.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of longitudinal cross-section schematic diagram of the bent cap segment of prefabricated assembled bent cap provided in an embodiment of the present invention；
Fig. 2 is the longitudinal cross-section schematic diagram of second of bent cap provided in an embodiment of the present invention segment；
Fig. 3 is the longitudinal cross-section schematic diagram of the third bent cap segment provided in an embodiment of the present invention；
Fig. 4 is the longitudinal cross-section schematic diagram of the 4th kind of bent cap segment provided in an embodiment of the present invention；
Fig. 5 is a kind of end structure illustration of the splice ends of bent cap segment provided in an embodiment of the present invention；
Fig. 6 is the end structure illustration of the splice ends of another bent cap segment provided in an embodiment of the present invention；
Fig. 7 is structural schematic diagram of the bent cap segment provided in an embodiment of the present invention after the completion of precast pier hangs oneself dress；
Fig. 8 is the structural schematic diagram after the completion of the bent cap segment lifting of precast pier both sides provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram after the completion of prefabricated assembled bent cap assembly provided in an embodiment of the present invention.
Wherein, 1 it is bent cap segment, 2 be spiral, 3 be operation slot, 4 be groove, 5 be protrusion, 6 is spiral
Connector, 7 are precast pier；
101 it is bent cap root segment, 102 be bent cap standard segment, 103 is that bent cap span centre closes up segment, 104 is that bent cap is outstanding
Arm end segment section, 201 be the first spiral, 202 be the second spiral, 203 be third spiral, 204 be the 4th screw thread
Reinforcing bar.
Specific implementation mode
Core of the invention reduces construction cost, shortens the construction period there is provided a kind of prefabricated assembled bent cap.
The present invention also provides a kind of construction methods of prefabricated assembled bent cap, reduce construction cost, shorten construction
Duration.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- Fig. 9 is please referred to Fig.1, an embodiment of the present invention provides a kind of prefabricated assembled bent caps, including multiple bent cap segments 1
With screw steel bar connector 6, wherein multiple spirals 2 are embedded in each bent cap segment 1, in each bent cap segment 1
The quantity of spiral 2 is identical and position corresponds, and assembly, each two adjacent bent cap segment 1 are spliced between bent cap segment 1
Splicing position correspond to the position of spiral 2 and be provided with operation slot 3, the end of spiral 2 is located in operation slot 3,
Operation slot 3 is connected to outside；The spiral 2 of each two adjacent bent cap segment 1 is spelled by 6 screw thread of screw steel bar connector
It connects, and screw steel bar connector 6 is contained in operation slot 3, the cross dimensions of operation slot 3 is slightly larger than screw steel bar connector
6 cross dimensions, to provide installation tool operating space when assembled connection.Each pair of spiral 2 being connected is by one
A screw steel bar connector 6 connects.
The prefabricated assembled bent cap is spliced by multiple bent cap segments 1, and by screw steel bar connector 6 in operating groove
The assembly of bent cap can be completed in the spiral 2 being directly connected in hole 3 in two neighboring bent cap segment 1, with existing using pre-
Stress reinforcing bar and slip casting make three-stage structure connect integral bent cap to compare, do not need dedicated prestress tensioning equipment and grouting
Equipment, spiral 2, screw steel bar connector 6 are standardized product used in bent cap segment 1, are not required to special equipment and fixed
System processing, simplifies construction, reduces construction cost, and could be after slurry intensities need not be waited to reach requirement (about 3~7 days)
Subsequent construction is carried out on bent cap, this bent cap segment 1 after the completion of bent cap assembly, can covered without waiting using mechanical connection
Subsequent construction is carried out on beam, shortens the construction period.In addition, the prefabricated assembled bent cap in the present invention is usually more than three by quantity
A bent cap segment 1 is spliced, therefore the length of each bent cap segment 1 is far smaller than the bent cap of existing three-stage structure, because
This, the weight of bent cap segment 1 is smaller, realizes the construction lightness of prefabricated assembled bent cap, convenience in transport and lifting.
In order to protect screw steel bar connector 6, it is avoided to be externally exposed, while screw steel bar connector 6 being avoided to loosen,
The corrosion resistance and endurance quality of junction are improved, in the present embodiment, after the splicing assembly of bent cap segment 1, is operated in slot 3
Filled with concrete, to seal up for safekeeping screw steel bar connector 6 and the spiral 2 exposed in operating slot 3.
Further, in the present embodiment, the structural strength grade for operating the concrete filled in slot 3 is higher than bent cap section
The structural strength grade of concrete used in section 1.More than a usual high grade, to further improve operation slot 3
In concrete structural strength, improve protective value.
In the present embodiment, it is provided with epoxy glue layer between the splice ends of each two adjacent bent cap segment 1.Pass through
The bent cap segment 1 mutually spliced is bonded by epoxy glue layer, further increases splicing intensity, while connecting portion being avoided to occur
Internal structure is protected in gap.
As Figure 1-Figure 8, the splice ends of each two bent cap segment 1 are additionally provided with the groove protrusion knot being fitted and fixed with each other
Structure, that is, if fluted, another bent cap being connected with the splice ends is arranged in a splice ends of a bent cap segment 1
The splice ends of segment 1 are provided with protrusion, and protrusion is embedded in groove, the splicing intensity to two bent cap segments 1 of raising and positioning
Precision.
As shown in Figure 5 and Figure 6, further, in the present embodiment, cross of the groove bulge-structure along prefabricated assembled bent cap
Extend to perforation, i.e., the length of groove bulge-structure is identical as the lateral dimension of prefabricated assembled bent cap, facilitates two bent cap sections
The splicing installation of section 1.Two bent cap segments 1 after longitudinal register, it is only necessary to by the groove protrusion of one of bent cap segment 1
Side open end insertion and transverse shifting of the structure from the groove bulge-structure of another bent cap segment 1, can realize two
The alignment of a bent cap segment 1.And two bent cap segments 1 are realized in vertical side by the groove bulge-structure that lateral direction penetrating extends
To positioning.
As Figure 1-Figure 4, in the present embodiment, the end of the spiral 2 of each bent cap segment 1 and the bent cap segment
The end face of 1 splice ends is concordant, and the position that the splice ends of each bent cap segment 1 correspond to spiral 2 is both provided with operation slot
3, the end of spiral 2 is located in operation slot 3.So set, standardization and the versatility of bent cap segment 1 may be implemented,
After two bent cap segments 1 are spliced, each pair of spiral 2 of two bent cap segments 1 docks, and interface is located at two splice ends
End face in.
Certainly, the spiral 2 for two bent cap segments 1 being connected can not also splice in the end face of splice ends, and
It is to operate to realize docking in slot 3 at wherein one, i.e. splicing is stretched out in one end of the spiral 2 of one of bent cap segment 1
One end of the end face at end, the spiral 2 of another bent cap segment 1 is located in the operation slot 3 within splice ends, as long as ensureing
After the splice ends docking of two bent cap segments 1, two spirals 2 equally realize docking.At this point, one of bent cap section
The splice ends of section 1 can be not provided with operation slot 3.Only this connection type is inconvenient to process and realize general.
As shown in Fig. 1-Fig. 4, Fig. 7-Fig. 9, in the present embodiment, the bent cap segment 1 in a prefabricated assembled bent cap is divided
It is four kinds, is that bent cap root segment 101, bent cap standard segment 102, bent cap span centre close up segment 103 and bent cap cantilever end respectively
Segment 104；Wherein, the both ends that bent cap root segment 101, bent cap standard segment 102 and bent cap span centre close up segment 103 are to spell
End is connect, one end of bent cap cantilever end segment 104 is splice ends；Bent cap root segment 101 is used for and precast pier assembly connection, lid
Splice respectively with two adjacent bent cap standard segments 102 at the both ends of beam root segment 101；Bent cap span centre closes up segment 103
Both ends are respectively used to splice with one end of two adjacent bent cap standard segments 102；The splice ends of bent cap cantilever end segment 104 are used
Splice in one end of bent cap standard segment 102.
Specifically, as shown in Figure 1, pre-buried multiple the first elongated spirals 201 in bent cap root segment 101, and
One spiral 201 is identical as the length of bent cap root segment 101, and the both ends of bent cap root segment 101 are along the first spiral
201 offer operation slot 3.
As shown in Fig. 2, pre-buried multiple the second elongated spirals 202 in bent cap standard segment 102, and the second screw-thread steel
Muscle 202 is identical as the length of bent cap standard segment 102, and the both ends of bent cap standard segment 102 are offered along the second spiral 202
Slot 3 is operated, the both ends of bent cap standard segment 102 are splice ends, one end and the bent cap root segment of bent cap standard segment 102
101 one end splicing, the other end and the bent cap span centre of bent cap standard segment 102 close up segment 103 or bent cap cantilever end segment 104
One end splicing；Preferably, second spiral of the one end being connect with bent cap root segment 101 on bent cap standard segment 102
Screw steel bar connector 6 is installed in advance, the outer end face of screw steel bar connector 6 is concordant with the end face of splice ends, and covers on 202
Close up the second spiral of one end 202 of segment 103 or bent cap cantilever end segment 104 on beam standard segment 102 with bent cap span centre
On screw steel bar connector 6 is not installed in advance.
As shown in figure 3, bent cap span centre closes up pre-buried multiple elongated third spirals 203 in segment 103, and third spiral shell
The length that line reinforcing bar 203 closes up segment 103 with bent cap span centre is identical, and bent cap span centre closes up the both ends of segment 103 along third screw thread
Reinforcing bar 203 offers operation slot 3, and the both ends that bent cap span centre closes up segment 103 are splice ends, and both ends are respectively used to and phase
One end splicing of two adjacent bent cap standard segments 102；Preferably, bent cap span centre closes up the both ends third screw-thread steel of segment 103
Screw steel bar connector 6 is installed in advance, the outer end face of screw steel bar connector 6 is concordant with the end face of splice ends on muscle 203.
As shown in figure 4, the only one end of bent cap cantilever end segment 104 is splice ends, it is pre-buried multiple in bent cap cantilever end segment 104
4th spiral 204, and one end of the 4th spiral 204 is concordant with the splice ends of bent cap cantilever end segment 104, bent cap is outstanding
The splice ends of arm end segment section 104 offer operation slot 3, the splice ends of bent cap cantilever end segment 104 along the 4th spiral 204
For splicing with one end of bent cap standard segment 102, and screw thread is installed in advance on the 4th spiral 204 in the splice ends
Reinforcing bar connector 6, the outer end face of screw steel bar connector 6 are concordant with the end face of splice ends.
In actual use, pre-processed above four kinds of bent cap segments 1, are transported to after scene, according to specific assembly
It carries out in proper order assembled.
Further, in the present embodiment, the splice ends of above four kinds of bent cap segments 1 are both provided with groove bulge-structure,
Specifically, the both ends of bent cap root segment 101 are both provided with groove 4；One end of bent cap standard segment 102 is provided with and bent cap root
The protrusion 5 that the groove 4 of portion segment 101 is fitted and fixed with, the other end setting fluted 4 of bent cap standard segment 102；Bent cap span centre closes
The both ends for holding together segment 103 are both provided with the protrusion 5 being fitted and fixed with the groove 4 of bent cap standard segment 102, bent cap cantilever end segment
104 one end is provided with the protrusion 5 being fitted and fixed with the groove 4 of bent cap standard segment 102.Certainly, groove 4 and protrusion 5 may be used also
With reversing of position, it is fitted and fixed with as long as can realize.
In the present embodiment, spiral 2 is finish rolling deformed bar, and structural strength is high.Finish rolling deformed bar often uses diameter
For 18mm, 25mm, 32mm, 40mm, connection method of the invention is all applicable in.Spiral 2 is preferably provided in bent cap segment 1
By the position of proximal edge, be arranged one week, the quantity of spiral 2 is decided according to the actual requirements, and does not limit herein.
Based on prefabricated assembled bent cap described in any of the above embodiment, the embodiment of the present invention additionally provides a kind of prefabricated
The construction method of assembled bent cap, includes the following steps：
Be prefabricated in the factory bent cap segment 1, by the transport of multiple bent cap segments 1 to construction site, live pier column 7 at this time
It has constructed completion, has carried out following construction later：
Step S100, as shown in fig. 7, the bent cap segment 1 that both ends are splice ends is lifted at least one correspondingly
On a precast pier 7 and connect.A bent cap segment 1 is fixed in lifting i.e. on each precast pier 7, and the two of the bent cap segment 1
End is splice ends, is specifically as follows bent cap root segment 101.The quantity of precast pier 7 is depending on actual conditions, Ke Yiwei
One, two, three or more.
Step S200 lifts remaining bent cap segment 1 in the both sides of precast pier 7, and passes through spiral successively respectively
The spiral 2 of the connection each two adjacent cover girder segment 1 in the operation slot 3 of bent cap segment 1 of connector 6, until completing pre-
The splicing of assembled bent cap processed.
As shown in Figure 8 and Figure 9, by taking two precast piers 7 as an example, the Specific construction process of step S200 is：
Step S201 lifts bent cap standard knot section 102 in the both sides of each precast pier 7, makes bent cap standard segment respectively
102 splice ends are aligned with the splice ends of bent cap root segment 101, and screw the screw-thread steel in bent cap standard segment 102
Muscle connector 6 makes the half length of screw steel bar connector 6 screw on the first spiral 201 of bent cap root segment 101,
Realize that the both ends of bent cap root segment 101 are spliced with bent cap standard segment 102 respectively.
Step S202 distinguishes lifting lid girder cantilever end segment section in the outside of two bent cap standard segments 102 positioned at both ends
104, after alignment, the screw steel bar connector 6 in bent cap cantilever end segment 104 is screwed, the one of screw steel bar connector 6 is made
Half length is screwed on the second spiral 202 of bent cap standard segment 102, realizes bent cap cantilever end segment 104 and bent cap standard
Splice segment 102.At the same time, close up segment in the lifting lid girder span between two intermediate bent cap standard segments 102
103, after alignment, the screw steel bar connector 6 closed up positioned at bent cap span centre in segment 103 is screwed, screw steel bar connector 6 is made
Half length is screwed on the second spiral 202 of bent cap standard segment 102, realizes that bent cap span centre closes up the both ends of segment 103
Splice respectively with bent cap standard segment 102, completes closing up for the bent cap on two precast piers 7.
Certainly, the quantity of the required bent cap segment of a prefabricated assembled bent cap 1 can be more, it is not limited to
Number amount and type cited by the present embodiment, as long as using the catenation principle in the present invention.
In order to protect screw steel bar connector 6, the corrosion resistance and endurance quality of junction are improved, in the present embodiment
In, further include step S300 after the step S200 in construction method：Using concrete by the splicing of two neighboring bent cap segment 1
The operation slot 3 at end clog it is smooth, and operate slot 3 used in concrete structural strength grade than bent cap segment
The structural strength grade of concrete used in 1 is high, more than general high level-one.
Further, in the present embodiment, in step s 200, before two neighboring bent cap segment 1 is spliced, first
Splice ends in one or two of each two adjacent cover girder segment 1 bent cap segment 1 smear epoxy glue layer.Pass through smearing
Epoxy glue layer realizes being adhesively fixed for two neighboring bent cap segment 1, and to avoid existing between the two gap, protection is internal
Structure.
The construction method with it is existing so that three-stage structure is connected integral bent cap using deformed bar and slip casting compared with,
Do not need dedicated prestress tensioning equipment and grouting equipment, by the standard components such as spiral 2 and screw steel bar connector 6 into
Row is connected and fixed, and need not customize or special equipment produces, simplify construction technology, reduce construction cost, and need not wait
Slurry intensity could carry out subsequent construction after reaching requirement (about 3~7 days) on bent cap, efficient and convenient using mechanical connection, no
It needs to wait for that subsequent construction can be carried out on bent cap, shortens the construction period.In addition, the prefabricated assembled bent cap in the present invention is logical
Often the bent cap segment by quantity more than three is spliced, therefore the length of each bent cap segment 1 is far smaller than existing three sections
The bent cap of structure, therefore, the weight of bent cap segment 1 are smaller, realize the construction lightness of prefabricated assembled bent cap, convenience in transport
And lifting.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (12)
1. a kind of prefabricated assembled bent cap, which is characterized in that including：
Multiple bent cap segments (1) are each embedded with multiple spirals (2), the bent cap segment in the bent cap segment (1)
(1) splice assembly between, the splicing position of each two adjacent bent cap segment (1) corresponds to the position of the spiral (2)
It installs and is equipped with operation slot (3)；
The spiral (2) of screw steel bar connector (6), each two adjacent bent cap segment (1) passes through the spiral shell
Line reinforcing bar connector (6) splices, and the screw steel bar connector (6) is contained in the operation slot (3).
2. prefabricated assembled bent cap according to claim 1, which is characterized in that after bent cap segment (1) the splicing assembly,
Concrete is filled in the operation slot (3).
3. prefabricated assembled bent cap according to claim 2, which is characterized in that is filled in the operation slot (3) is mixed
Coagulate structural strength grade of the native structural strength grade higher than the concrete of the bent cap segment (1).
4. prefabricated assembled bent cap according to claim 1, which is characterized in that each two adjacent bent cap segment
(1) epoxy glue layer is provided between splice ends.
5. according to the prefabricated assembled bent cap of claim 1-4 any one of them, which is characterized in that bent cap segment described in each two
(1) splice ends are additionally provided with the groove bulge-structure being fitted and fixed with each other.
6. prefabricated assembled bent cap according to claim 5, which is characterized in that the groove bulge-structure is along described prefabricated
The lateral direction penetrating of assembled bent cap extends.
7. according to the prefabricated assembled bent cap of claim 1-4 any one of them, which is characterized in that each bent cap segment
(1) end of the spiral (2) is concordant with the end face of splice ends of bent cap segment (1) described in this, each bent cap
The position that the splice ends of segment (1) correspond to the spiral (2) is both provided with the operation slot (3), the spiral
(2) end is located in the operation slot (3).
8. according to the prefabricated assembled bent cap of claim 1-4 any one of them, which is characterized in that the bent cap segment (1) point
Close up segment (103) and bent cap cantilever end segment for bent cap root segment (101), bent cap standard segment (102), bent cap span centre
(104)；The both ends that bent cap root segment (101), bent cap standard segment (102) and bent cap span centre close up segment (103) are equal
One end for splice ends, bent cap cantilever end segment (104) is splice ends；Bent cap root segment (101) is used for and prefabricated bridge
Pier (7) assembly connection, the both ends of bent cap root segment (101) respectively with two adjacent bent cap standard segments
(102) splice；The both ends that bent cap span centre closes up segment (103) are respectively used to and two adjacent bent cap standard segments
(102) one end splicing；The splice ends of bent cap cantilever end segment (104) are used for and bent cap standard segment (102)
Splice one end.
9. prefabricated assembled bent cap according to claim 8, which is characterized in that the two of bent cap root segment (101)
End is both provided with groove (4)；One end of bent cap standard segment (102) be provided be fitted and fixed with the groove (4) it is convex
It rises (5), the other end of bent cap standard segment (102) is provided with the groove (4)；The bent cap span centre closes up segment
(103) both ends are both provided with raised (5), and one end of bent cap cantilever end segment (104) is provided with the protrusion
(5)。
10. a kind of construction method of prefabricated assembled bent cap, which is characterized in that step includes：
S100, it is that the bent cap segments (1) of splice ends is lifted at least one precast pier (7) simultaneously correspondingly by both ends
Connection；
S200, it lifts remaining bent cap segment (1) successively respectively in the both sides of the precast pier (7), and passes through spiral
The spiral (2) of connector (6) connection each two adjacent cover girder segment (1) in the operation slot (3) of bent cap segment (1),
Until completing the splicing of prefabricated assembled bent cap.
11. the construction method of prefabricated assembled bent cap according to claim 10, which is characterized in that the step S200 it
After further include step S300：Using the concrete higher than the concrete structural strength grade of bent cap segment (1) by two neighboring institute
State the splice ends of bent cap segment (1) operation slot (3) clog it is smooth.
12. the construction method of the prefabricated assembled bent cap according to claim 10 or 11, which is characterized in that in the step
In S200, before two neighboring bent cap segment (1) is spliced, first one in each two adjacent cover girder segment (1) or
The splice ends of two bent cap segments (1) smear epoxy glue layer.
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