CN106677073A - Construction method for semi-integral jointless bridge structure adaptive to soft soil foundation - Google Patents
Construction method for semi-integral jointless bridge structure adaptive to soft soil foundation Download PDFInfo
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- CN106677073A CN106677073A CN201710077762.5A CN201710077762A CN106677073A CN 106677073 A CN106677073 A CN 106677073A CN 201710077762 A CN201710077762 A CN 201710077762A CN 106677073 A CN106677073 A CN 106677073A
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- tension
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- construction method
- soft soil
- soil foundation
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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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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for a semi-integral jointless bridge structure adaptive to a soft soil foundation. The construction method for the semi-integral jointless bridge structure adaptive to the soft soil foundation comprises the following steps of first, erecting a precast beam, arranging a permanent support and a temporary cushion block under the precast beam; arranging the temporary cushion block at the end part of the precast beam to support the precast beam; and then binding a reinforcement in a beam-end cast-in-situ section, embedding an embedded part of a tension-compression combined member in the beam-end cast-in-situ section, and pouring the beam-end cast-in-situ section, which is positioned above the permanent support, at the end part of the precast beam; and finally, pouring a pavement; mounting a tensile top plate, on which a PBL shear resistant perforated plate is welded, a perforated reinforcement, a reinforcing reinforcement and a pavement reinforcement above the embedded part of the tension-compression combined member; and pouring a concrete leveling course and an asphalt concrete surface course. According to the construction method for the semi-integral jointless bridge structure adaptive to the soft soil foundation, the mounting accuracy is greatly improved, tension-compression combined expected effect can be synchronously achieved, and the mounting and pouring angles of a tension-compression rod can be adjusted according to on-the-spot erecting situations to ensure that a tension rod is closely attached to the beam top and a compression rod is closely attached to the beam end.
Description
Technical field
The present invention relates to technical field of bridge construction, more particularly to a kind of semi-monolithic formula seamless bridge for adapting to soft soil foundation
Construction method.
Background technology
In the prior art, (partly) integral bridge due to eliminating the retractor device of Abutment, by bridge two ends
Expansion joint moves to attachment strap end, and the temperature deformation of girder is transferred to attachment strap and road joining place, stretches so as to become bridge by attachment strap
Contracting seam is road seam, simplifies seam construction, improves the performance of bridge, reduces maintenance costs.
For the semi-monolithic formula seamless bridge in soft soil foundation region, when for accelerating construction progress, using the prefabricated beam body of freely-supported
During the continuous construction method of rotation structure, a kind of semi-monolithic formula seamless bridge construction of the precast assembly of adaptation soft soil foundation can be adopted
(will girder, attachment strap structure separate, and between girder, between girder and attachment strap arrange tension and compression combined member, that is, be arranged on master
The continuous composite bridges face of beam and attachment strap top surface forms pull bar, and the setting of side girder upper limb end is trapezoidal to convex to form depression bar, realizes
The vertical bridge that the deformation of adjacent girder beam body is produced at bridge floor continuous structure to stretcher strain, buckle and stabilize and increase its anticorrosive property
Can), with the additional internal force for overcoming traditional semi-monolithic formula seamless bridge to produce because structure is continuous it is big, material usage is high, construction is multiple
Miscellaneous the problems such as.
But for prefabricated beam section, the pre-buried rod member of the tension and compression combined member is same with girder in factory according to traditional method
Step is prefabricated to be completed, then there is problems with：
(1) construction quality is difficult to ensure：
After live main beam supporting is installed, because the factors such as road vertical and horizontal gradient, bridge oblique angles and construction error affect,
Precast main beam, attachment strap top surface each other is hardly formed a plane, is easily caused pull bar installation difficulty, depression bar and beam-ends not close
Patch, it is impossible to the synchronous predictive role for reaching tension and compression combination.
(2) it is easily caused concrete cracking when steel plate is welded：
Pull bar is installed when adopting traditional method Site Welding on pre-embedded steel slab, is welded the high temperature for producing and is easily caused pre-buried steel
The concrete cracking of plate periphery.
(3) structure tension performance and poor durability：
1st, installation accuracy is low, and additional internal force is easily produced in the structure, reduces the stress performance of structure；Can cause when serious
The structural deterioration, affects normally using during operation.
2nd, structure easily seeps water, and reduces the durability of structure.
The content of the invention
In view of the drawbacks described above of prior art, the present invention provides a kind of semi-monolithic formula seamless bridge for adapting to soft soil foundation
One of construction method, purpose of realization are by the Cast-in-Situ Segment in the reserved certain length in the end of precast beam, by strut and tie
Construction install to pour at the scene and complete, pull bar is fixed on girder using high-strength bolt.
For achieving the above object, a kind of semi-monolithic formula seamless bridge construction method for adapting to soft soil foundation, step is such as
Under：
A, erecting beam, and permanent bearing and temporary cushion block are set below the precast beam；The temporary cushion block sets
Put in the prefabricated beam end, for supporting the precast beam；
B, in the end of the precast beam, pour beam-ends Cast-in-Situ Segment, the beam-ends Cast-in-Situ Segment is located on the permanent bearing
Side, when pouring, arranges tension and compression combined member built-in fitting in the beam-ends Cast-in-Situ Segment；
C, pour road surface；After PBL shearing resistance device perforated panels are welded on tension top board, then the tension mounting of roof plate is arrived
Above the tension and compression combined member built-in fitting；Perforation reinforcing bar, PBL shearing resistance device perforated panels are penetrated in the PBL shearing resistances device perforated panel
Main room arrange reinforcing bar of mating formation；Then casting concrete screed-coat, asphalt concrete pavement.
Preferably, the permanent bearing and the temporary cushion block are arranged on bridge pier, and the bridge pier upper end connects respectively two
Precast beam described in root；Arrange tension and compression combined member built-in fitting described in step B to comprise the following steps：
B-1-1, the beam-ends Cast-in-Situ Segment is poured, and before pouring, in the beam-ends Cast-in-Situ Segment of two precast beams respectively
Shallow-layer embedded board, deep layer embedded board, pre-embedded bolt, the reinforcing bar of the trapezoidal raised depression bar of colligation beam-ends are set；After the completion of, remove described
Temporary cushion block, enables precast beam described in the permanent seat supports；
B-1-2, between two shallow-layer embedded boards neoprene plate is laid, arrange anti-on the neoprene plate
Top board is drawn, and the tension top board is anchored on into the pre-embedded bolt and the shallow-layer embedded board with nut, complete tension and compression combination
The installation of component.
Preferably, the permanent bearing and the temporary cushion block are arranged on abutment, and the abutment upper end connects respectively institute
State precast beam and attachment strap；Arrange tension and compression combined member built-in fitting described in step B to comprise the following steps：
B-2-1, the position for corresponding to attachment strap in abutment upper end arrange the thick elastic support band for supporting the attachment strap；
B-2-2, the beam-ends Cast-in-Situ Segment and attachment strap are poured, be respectively provided with the beam-ends Cast-in-Situ Segment and the attachment strap shallow
Layer embedded board, deep layer embedded board, pre-embedded bolt, the reinforcing bar of the trapezoidal raised depression bar of colligation beam-ends；After the completion of, remove the interim pad
Block, enables beam-ends Cast-in-Situ Segment described in the permanent seat supports；
B-2-3, between the shallow-layer embedded board neoprene plate is laid, tension top is set on the neoprene plate
Plate, and the tension top board is anchored on into the pre-embedded bolt and the shallow-layer embedded board with nut, complete tension and compression combined member
Installation.
Preferably, the PBL shearing resistances device perforated panel is integrally welded with the tension top board.
Preferably, the reinforcing bar of mating formation is longitudinally, laterally arranged in a crossed manner in latticed.
Beneficial effects of the present invention：
1st, installation accuracy is drastically increased, can synchronously reaches tension and compression combination predictive role：
Due to using in-site installation built-in fitting and the method for pouring, the peace of strut and tie according to erected on site situation, can be adjusted
Fill and pour angle, it is ensured that pull bar distinguishes closely connected with back, depression bar and beam-ends.
2nd, the stress performance and good endurance of structure：
(1) installation accuracy is high, reduces structure additional internal force.
(2) pull bar is fixed on girder using high-strength bolt, it is to avoid concrete ftractures because of welding.
The technique effect of the design, concrete structure and generation of the present invention is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is illustrated that in one embodiment of the invention on bridge pier the schematic diagram for arranging temporary support.
Fig. 2 is illustrated that two preset beams in one embodiment of the invention start setting up the signal of the built-in fitting of tension and compression combined member
Figure.
Fig. 3 is illustrated that in one embodiment of the invention that two preset beams complete the schematic diagram for arranging tension and compression combined member.
Fig. 4 is illustrated that in one embodiment of the invention that two preset beams complete to arrange and lay showing for road surface after tension and compression combined member
It is intended to.
Fig. 5 is illustrated that in one embodiment of the invention on abutment the schematic diagram for arranging temporary support.
Fig. 6 is illustrated that in one embodiment of the invention between preset beam and attachment strap and starts setting up the pre-buried of tension and compression combined member
The schematic diagram of part.
Fig. 7 is illustrated that in one embodiment of the invention between preset beam and attachment strap the signal for completing to arrange tension and compression combined member
Figure.
Fig. 8 is illustrated that in one embodiment of the invention between preset beam and attachment strap to complete to arrange and lay after tension and compression combined member
The schematic diagram on road surface.
Specific embodiment
Embodiment
As shown in Figures 1 to 8, a kind of semi-monolithic formula seamless bridge construction method for adapting to soft soil foundation, step is such as
Under：
A, erecting beam 2, and permanent bearing 11 and temporary cushion block 12 are set below precast beam 2；Temporary cushion block 12 sets
Put in the end of precast beam 2, for supporting precast beam 2；
B, in the end of precast beam 2, pour beam-ends Cast-in-Situ Segment 22, beam-ends Cast-in-Situ Segment 22 is located at the top of permanent bearing 11,
When pouring, tension and compression combined member built-in fitting is set in beam-ends Cast-in-Situ Segment 22；
C, pour road surface 3；After PBL shearing resistance devices perforated panel 28 is welded on tension top board 27, then tension top board 27 is pacified
It is attached to above tension and compression combined member built-in fitting；Perforation reinforcing bar 21, PBL shearing resistance device perforated panels are penetrated in PBL shearing resistance devices perforated panel 28
28 main room arrange reinforcing bar 32 of mating formation；Then casting concrete screed-coat 33, asphalt concrete pavement 34.
As shown in Figures 1 to 4, permanent bearing 11 and temporary cushion block 12 are arranged on bridge pier 1, and the upper end of bridge pier 1 connects respectively
Two precast beams 2；Arrange tension and compression combined member built-in fitting in step B to comprise the following steps：
As shown in Fig. 2 B-1-1, beam-ends Cast-in-Situ Segment 22 is poured, and before pouring, in the beam-ends Cast-in-Situ Segment 22 of two precast beams 2
Inside it is respectively provided with shallow-layer embedded board 23, deep layer embedded board 24, pre-embedded bolt 25, the reinforcing bar of the trapezoidal raised depression bar of colligation beam-ends；It is complete
Cheng Hou, removes temporary cushion block 12, enables permanent bearing 11 and supports precast beam 2；
As shown in figure 3, B-1-2, the laying neoprene plate 26 between two shallow-layer embedded boards 23, in neoprene plate 26
Upper setting tension top board 27, and tension top board 27 is anchored on into pre-embedded bolt 25 and shallow-layer embedded board 23 with nut, complete tension and compression
The installation of combined member.
As shown in Fig. 5 to Fig. 8, in certain embodiments, permanent bearing 11 and temporary cushion block 12 are arranged on abutment 4, bridge
The upper end of platform 4 connects respectively precast beam 2 and attachment strap 5；Arrange tension and compression combined member built-in fitting in step B to comprise the following steps：
As shown in figure 5, B-2-1, arranging thick elastic support band 14 in the position of the upper end of abutment 4 correspondence attachment strap 5 and being used to support
Attachment strap 5；
As shown in fig. 6, B-2-2, pouring beam-ends Cast-in-Situ Segment 22 and attachment strap 5, set respectively in beam-ends Cast-in-Situ Segment 22 and attachment strap 5
Put shallow-layer embedded board 23, deep layer embedded board 24, pre-embedded bolt 25, the reinforcing bar of the trapezoidal raised depression bar of colligation beam-ends；After the completion of, remove
Temporary cushion block 12, enables permanent bearing 11 and supports beam-ends Cast-in-Situ Segment 22；
As shown in fig. 7, B-2-3, the laying neoprene plate 26 between shallow-layer embedded board 23, set on neoprene plate 26
Tension top board 27 is put, and tension top board 27 is anchored on into pre-embedded bolt 25 and shallow-layer embedded board 23 with nut, complete tension and compression combination
The installation of component.
In certain embodiments, PBL shearing resistances device perforated panel 27 is integrally welded with tension top board 28.
In certain embodiments, reinforcing bar 32 of mating formation is longitudinally, laterally arranged in a crossed manner in latticed.
The preferred embodiment of the present invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (5)
1. a kind of semi-monolithic formula seamless bridge construction method for adapting to soft soil foundation, step is as follows：
A, erecting beam (2), and permanent bearing (11) and temporary cushion block (12) are set in the precast beam (2) lower section；It is described
Temporary cushion block (12) is arranged on the precast beam (2) end, for supporting the precast beam (2)；
B, in the end of the precast beam (2), pour beam-ends Cast-in-Situ Segment (22), the beam-ends Cast-in-Situ Segment (22) is positioned at described permanent
Bearing (11) top, when pouring, arranges tension and compression combined member built-in fitting in the beam-ends Cast-in-Situ Segment (22)；
C, pour road surface (3)；After PBL shearing resistances device perforated panel (28) is welded on tension top board (27), then by the tension top
Plate (27) is installed to above the tension and compression combined member built-in fitting；Perforation reinforcing bar is penetrated in the PBL shearing resistances device perforated panel (28)
(21), PBL shearing resistances device perforated panel (28) main room arrange reinforcing bar (32) of mating formation；Then casting concrete screed-coat (33), Colophonium are mixed
Solidifying soil surface layer (34).
2. a kind of semi-monolithic formula seamless bridge construction method for adapting to soft soil foundation according to claim 1, it is special
Levy and be, the permanent bearing (11) and the temporary cushion block (12) are arranged on bridge pier (1), bridge pier (1) the upper end difference
Two precast beams (2) of connection；Arrange tension and compression combined member built-in fitting described in step B to comprise the following steps：
B-1-1, the beam-ends Cast-in-Situ Segment (22) is poured, and before pouring, in the beam-ends Cast-in-Situ Segment (22) of two precast beams (2)
Inside it is respectively provided with shallow-layer embedded board (23), deep layer embedded board (24), pre-embedded bolt (25), the steel of the trapezoidal raised depression bar of colligation beam-ends
Muscle；After the completion of, the temporary cushion block (12) is removed, enable the permanent bearing (11) and support the precast beam (2)；
B-1-2, laying neoprene plate (26) between two shallow-layer embedded boards (23), in the neoprene plate (26)
Upper setting tension top board (27), and the tension top board (27) is anchored on into the pre-embedded bolt (25) and the shallow-layer with nut
Embedded board (23), completes the installation of tension and compression combined member.
3. a kind of semi-monolithic formula seamless bridge construction method for adapting to soft soil foundation according to claim 1, it is special
Levy and be, the permanent bearing (11) and the temporary cushion block (12) are arranged on abutment (4), abutment (4) the upper end difference
Connect the precast beam (2) and attachment strap (5)；Arrange tension and compression combined member built-in fitting described in step B to comprise the following steps：
B-2-1, the position setting thick elastic support band (14) in abutment (4) upper end correspondence attachment strap (5) are described for supporting
Attachment strap (5)；
B-2-2, the beam-ends Cast-in-Situ Segment (22) and attachment strap (5) are poured, in the beam-ends Cast-in-Situ Segment (22) and the attachment strap (5)
It is respectively provided with shallow-layer embedded board (23), deep layer embedded board (24), pre-embedded bolt (25), the steel of the trapezoidal raised depression bar of colligation beam-ends
Muscle；After the completion of, the temporary cushion block (12) is removed, enable the permanent bearing (11) and support the beam-ends Cast-in-Situ Segment (22)；
B-2-3, laying neoprene plate (26) between the shallow-layer embedded board (23), set on the neoprene plate (26)
Tension top board (27) is put, and the tension top board (27) is anchored on into the pre-embedded bolt (25) with nut and the shallow-layer is pre-buried
Plate (23), completes the installation of tension and compression combined member.
4. the semi-monolithic formula seamless bridge construction method of a kind of adaptation soft soil foundation according to claim 3 or 4, its
It is characterised by, the PBL shearing resistances device perforated panel (27) is integrally welded with the tension top board (28).
5. the semi-monolithic formula seamless bridge construction method of a kind of adaptation soft soil foundation according to claim 3 or 4, its
It is characterised by, the reinforcing bar of mating formation (32) is longitudinally, laterally arranged in a crossed manner in latticed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330745A (en) * | 2018-02-09 | 2018-07-27 | 上海市城市建设设计研究总院（集团）有限公司 | The implementation of soft clay area tramcar assembled sub-rail foundation |
| CN115404762A (en) * | 2022-10-10 | 2022-11-29 | 上海市政工程设计研究总院（集团）有限公司 | Pier top longitudinal continuous structure of assembled beam bridge and construction method thereof |
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| JPH09296459A (en) * | 1996-04-30 | 1997-11-18 | Masumi Yamada | Steel encased reinforced concrete |
| CN101538851A (en) * | 2009-04-13 | 2009-09-23 | 上海市城市建设设计研究院 | Construction technology for reinforcing soft soil foundation by transverse pressurization and dedicated aeration zone press-in device |
| CN101736749A (en) * | 2008-11-06 | 2010-06-16 | 上海市城市建设设计研究院 | Method for constructing soft soil foundation continuous caisson |
| CN102433872A (en) * | 2011-09-26 | 2012-05-02 | 上海市城市建设设计研究总院 | Large-diameter concrete prefabricated segment pile of soft soil foundation |
| CN203373772U (en) * | 2013-08-01 | 2014-01-01 | 上海市城市建设设计研究总院 | Foundation structure of reinforced concrete drainage pipeline under condition of soft soil foundation |
| CN204491388U (en) * | 2015-01-28 | 2015-07-22 | 福州大学 | A kind of outsourcing semi-integral bridge abutment bridge construction |
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2017
- 2017-02-14 CN CN201710077762.5A patent/CN106677073B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09296459A (en) * | 1996-04-30 | 1997-11-18 | Masumi Yamada | Steel encased reinforced concrete |
| CN101736749A (en) * | 2008-11-06 | 2010-06-16 | 上海市城市建设设计研究院 | Method for constructing soft soil foundation continuous caisson |
| CN101538851A (en) * | 2009-04-13 | 2009-09-23 | 上海市城市建设设计研究院 | Construction technology for reinforcing soft soil foundation by transverse pressurization and dedicated aeration zone press-in device |
| CN102433872A (en) * | 2011-09-26 | 2012-05-02 | 上海市城市建设设计研究总院 | Large-diameter concrete prefabricated segment pile of soft soil foundation |
| CN203373772U (en) * | 2013-08-01 | 2014-01-01 | 上海市城市建设设计研究总院 | Foundation structure of reinforced concrete drainage pipeline under condition of soft soil foundation |
| CN204491388U (en) * | 2015-01-28 | 2015-07-22 | 福州大学 | A kind of outsourcing semi-integral bridge abutment bridge construction |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330745A (en) * | 2018-02-09 | 2018-07-27 | 上海市城市建设设计研究总院（集团）有限公司 | The implementation of soft clay area tramcar assembled sub-rail foundation |
| CN108330745B (en) * | 2018-02-09 | 2020-06-09 | 上海市城市建设设计研究总院（集团）有限公司 | Implementation method of tramcar assembled under-rail foundation in soft soil area |
| CN115404762A (en) * | 2022-10-10 | 2022-11-29 | 上海市政工程设计研究总院（集团）有限公司 | Pier top longitudinal continuous structure of assembled beam bridge and construction method thereof |
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| CN106677073B (en) | 2018-03-06 |
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