CN105803922A - High embankment filling bridgehead sedimentation preventing structure - Google Patents
High embankment filling bridgehead sedimentation preventing structure Download PDFInfo
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- CN105803922A CN105803922A CN201410857434.3A CN201410857434A CN105803922A CN 105803922 A CN105803922 A CN 105803922A CN 201410857434 A CN201410857434 A CN 201410857434A CN 105803922 A CN105803922 A CN 105803922A
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- attachment strap
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- high embankment
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Abstract
The invention relates to a high embankment filling bridgehead sedimentation preventing structure which comprises a bridge abutment, a pile foundation structure (12), a pavement structure layer (1), an approach slab structure layer (2) and a roadbed layer (5). The pavement structure layer (1) is laid on the approach slab structure layer (2). The high embankment filling bridgehead sedimentation preventing structure is characterized in that one end of the approach slab structure layer (2) is built on a bridge abutment bracket (11), the pile foundation structure (12) is arranged below the approach slab structure layer (2), the approach slab structure layer (2) and the pile top of the pile foundation structure (12) are connected to form a two-span or multi-span cast-in-place continuous plate structure, a plain concrete layer (3) and a broken stone hardcore (4) are sequentially arranged below the approach slab structure layer (2), and the broken stone hardcore (4) is laid on the roadbed layer (5). Compared with the prior art, the high embankment filling bridgehead sedimentation preventing structure has the advantages that transition between a road and a bridge is smooth, and bridgehead sedimentation preventing performance is excellent.
Description
Technical field
The present invention relates to a kind of end of the bridge anti-settling structure, especially relate to a kind of high embankment filled soil end of the bridge anti-settling structure.
Background technology
At present, in bridge construction, road would generally cause the relative settlement on road surface and bridge floor from end of the bridge phase cohesive position because the soil rigidity of subgrade and pavement Yu bridge structure is different, thus causing driving uncomfortable, even causes security incident.In prior art, usual employing arranges transition slab at bridge head and prevents end of the bridge from settling, and this technology can rotate along with the sedimentation banketed between adopting concrete slab to be shelved on abutment end and banket.
Chinese patent ZL201220025591.4 discloses a kind and prevents the bridgehead structures of sedimentation, including for support girder end of the bridge pedestal, be located at the roadbed away from girder side of this end of the bridge pedestal, this bridgehead structures also includes the attachment strap for supporting road surface being located in roadbed, one end of this attachment strap is overlapped on the top of described end of the bridge pedestal, and the other end of this attachment strap is overlapped on roadbed bearing plate set in described roadbed.Chinese patent ZL201320144372.2 discloses a kind of anti-settling end of the bridge ramp structure, including abutment, Qiao Di, bridge pier, roadbed stone, strengthen slope, supercrust, described slope of strengthening is welded and fused by the pre-buried exposed steel bar head on bridge dike and the longitudinal reinforcement strengthening bridge slope, and and the integral structure of concrete casting.Above-mentioned patent is by adopting the structure of transition slab at bridge head, obtain certain end of the bridge anti-settling effect, but when after platform, the depth of fill is higher, due to settlement of foundation, Roadbed Soil runs off, Roadbed Soil does not reach the problems such as compactness, attachment strap structure and Roadbed Soil is caused to come to nothing, thus causing that the situations such as knuckle fracture occurs in attachment strap structure, so, even if may often be such that being provided with attachment strap still has vehicle bump at bridge ends to occur.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of high embankment filled soil end of the bridge anti-settling structure is provided.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of high embankment filled soil end of the bridge anti-settling structure, including abutment, piling strtucture, road surface structare layer, attachment strap structure sheaf and base course, described road surface structare layer is laid on attachment strap structure sheaf, it is characterized in that, the head of described attachment strap structure sheaf rides upon on the abutment bracket of abutment, attachment strap structure sheaf is arranged below piling strtucture, and be connected with the stake top of piling strtucture formed two across or the in-situ continuous slab structure of multispan, setting gradually plain concrete layer, blotter under described attachment strap structure sheaf, described blotter is laid on base course.
Described attachment strap structure sheaf includes attachment strap, is provided with longitudinal reinforcement and transverse steel in this attachment strap, and the head of described attachment strap rides upon on abutment bracket, and below attachment strap, interval arranges piling strtucture, and is positioned at the part above piling strtucture in attachment strap and is provided with diagonal bar.
Reserved plastic flexible pipe in described attachment strap, the bearing-surface of described abutment bracket arranges asphalt felt bed course, makes attachment strap structure sheaf and end of the bridge be articulated and connected by joint bar through plastic flexible pipe and asphalt felt bed course, and described joint bar is embedded in Abutment Back.
Being provided with gap between described attachment strap structure sheaf and Abutment Back, clog sealing material in this gap, described sealing material is Colophonium or Horse hoof fat.
Described attachment strap structure sheaf laterally can arrange polylith attachment strap, and each attachment strap is connected by tension rib.
The thickness of described attachment strap communicates with lane width, is provided with subsiding crack between each attachment strap, filling rubber fastening band in this subsiding crack, and sets power transmission pull bar every 500mm.
The stake top of described piling strtucture is arranged at middle part or the afterbody of attachment strap structure sheaf, and the stake top length of the piling strtucture in the middle part of being wherein positioned at is more than the stake top length of the piling strtucture of afterbody.
Described plain concrete layer and blotter are arranged under attachment strap structure sheaf, and are connected mutually with piling strtucture.
Described base course is filled by compaction in layers of banketing after platform and forms, and adopts 8wt% rendzinas below pavement structure within the scope of 0.6m, its lower employing 6wt% rendzinas.Intensity >=the 0.6Mpa of base course.
Described plain concrete layer is built on blotter, and plain concrete layer both lateral sides width goes out to be positioned at each 100mm of attachment strap structure sheaf of end of the bridge.
Described attachment strap adopts armoured concrete slab, and the thickness of attachment strap changes according to the length of attachment strap and changes, and when attachment strap length is 6m, thickness of slab is 350mm, and when attachment strap length is 12m or more than 12m, thickness of slab is 500mm.
Compared with prior art, the attachment strap structure sheaf length of the present invention is longer, make between road and bridge, to serve good transition, attachment strap structure sheaf connects two-stage or multistage piling strtucture, play the differential settlement of adjustment bridge and roadbed, between attachment strap structure sheaf and base course, set up plain concrete layer and blotter, overcome roadbed dynamic stress below tradition transition slab at bridge head structure big, the situation of the easy disturbance of the soil body, it is possible to eliminate roadbed below attachment strap and come to nothing situation.Stake in being designed by piling strtucture is long, the change in stake footpath, it is achieved the smoothly transition of roadbed and the bridge foundation rigidity of structure, thus solving the generation of the phenomenon of bumping at bridge-head.
Accompanying drawing explanation
Fig. 1 is the facade structures schematic diagram of the present invention；
Fig. 2 is the section structure schematic diagram of the present invention；
Fig. 3 is the schematic diagram of attachment strap junction；
Fig. 4 is the structural reinforcement schematic diagram of the present invention；
In figure, road surface structare layer 1, attachment strap structure sheaf 2, plain concrete layer 3, blotter 4, base course 5, tension rib 6, Abutment Back 7, plastic flexible pipe 8, bearing-surface 9, joint bar 10, abutment bracket 11, piling strtucture 12, diagonal bar 13, longitudinal reinforcement 14, transverse steel 15.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figures 1 to 4, a kind of high embankment filled soil end of the bridge anti-settling structure, including abutment, piling strtucture 12, road surface structare layer 1, attachment strap structure sheaf 2 and base course 5.
Described road surface structare layer 1 designs according to category of roads, it is generally coarse grain formula Colophonium+middle grain formula Colophonium+stone mastic asphalt, may be designed as grain formula bituminous concrete (AC-20C)+40mm stone mastic asphalt SMA-13 in (from bottom to top) 6mm slurry seal+80mm Coarse Graded Bituminous Concrete (AC-25C)+60mm (SBS modifiies).Road surface structare layer 1 is laid on attachment strap structure sheaf 2,
Described attachment strap structure sheaf 2 includes attachment strap, is provided with longitudinal reinforcement 14 and transverse steel 15 in this attachment strap, and to strengthen the intensity of attachment strap, below attachment strap, interval arranges piling strtucture 12, and is positioned at the part above piling strtucture 12 in attachment strap and is provided with diagonal bar 13 reinforcement attachment strap.The head of described attachment strap rides upon on abutment bracket 11, reserved plastic flexible pipe 8 in attachment strap, pre-doweling 10 in Abutment Back, makes attachment strap structure sheaf 2 and end of the bridge be articulated and connected by joint bar 10 through the asphalt felt bed course being arranged on the bearing-surface 9 of abutment bracket 11 and plastic flexible pipe 8.Concrete attachment strap length is distinguished according to the depth of fill and ground situation and is arranged.It is provided with gap between attachment strap structure sheaf 2 and Abutment Back 7, in this gap, clogs the sealing materials such as bitumastic, play the flexible of buffering attachment strap structure sheaf 2 and sealing effect.Attachment strap structure sheaf 2 can arrange polylith attachment strap according to the road surface situation that is open to traffic, and the width of attachment strap is consistent with carriageway width, and direction across bridge such as can be divided at the block plate, each attachment strap is connected by tension rib 6, it is provided with subsiding crack between each attachment strap, filling rubber fastening band in this subsiding crack, and set power transmission pull bar every 500mm.Attachment strap structure adopts armoured concrete slab, and when attachment strap length is 6m, thickness of slab is 350mm, and when attachment strap length is more than 12m, thickness of slab is 500mm；It is provided with in gap and this gap between transition slab at bridge head and Abutment Back and clogs just like sealing materials such as Colophonium Horse hoof fat, so it is adapted to attachment strap structure and expands elongation, avoid abutment parados is produced thrust, can prevent surface gathered water from penetrating into along gap simultaneously, band bankets after walking on stage, it is to avoid coming to nothing occurs in attachment strap lower floor.
Described attachment strap structure sheaf sets gradually plain concrete layer 3, blotter 4, plain concrete layer 3 and blotter 4 for 2 times and is connected mutually with piling strtucture 12.Pile crown place attachment strap structure 2 thickness of slab strengthens, and laterally elongated, forms transverse strut.Plain concrete layer 3 is built on blotter 4.Described plain concrete layer 3 both lateral sides is wide to be gone out to be positioned at each 100mm of attachment strap structure sheaf 2 of bridgehead position, plain concrete cushion layer plays the effect of stress spread, can alleviate or eliminate attachment strap far-end secondary and jump the phenomenon of car, and surfacing when making attachment strap structure build, it is simple to attachment strap structure uniformly transfers load to roadbed.Described blotter 4 is laid on base course 5, can play the effect of diffusion-induced stress when soft ground treatment, and can draining, accelerate consolidation and the sedimentation of bottom soil layer.The stake top of described piling strtucture 12 is arranged at middle part or the afterbody of attachment strap structure sheaf 2, and the stake top length of the piling strtucture 12 in the middle part of being wherein positioned at is more than the stake top length of the piling strtucture 12 of afterbody.Described base course is filled by compaction in layers of banketing after platform and forms, and adopts 8wt% rendzinas below pavement structure within the scope of 0.6m, and its lower employing 6wt% rendzinas, the intensity >=0.6Mpa of base course, the compactness banketed after platform should strictly control.
After being processed by said method, the stake soil rigidity of road structure is promoted, and structure arranges from flexibility to rigidity gradual change therefore relative settlement can be made to be weakened, thus solving problem of vehicle bump at bridge head.
Although present disclosure has been made to be discussed in detail already by above preferred embodiment, but it should be appreciated that above example is only in order to illustrate technical scheme and unrestricted.After those skilled in the art has read foregoing description, it is possible in the form and details it is made various amendment and replacement, but protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. one kind high embankment filled soil end of the bridge anti-settling structure, including abutment, piling strtucture (12), road surface structare layer (1), attachment strap structure sheaf (2) and base course (5), described road surface structare layer (1) is laid on attachment strap structure sheaf (2), it is characterized in that, one end of described attachment strap structure sheaf (2) rides upon on the abutment bracket (11) of abutment, attachment strap structure sheaf (2) is arranged below piling strtucture (12), and be connected with the stake top of piling strtucture (12) formed two across or the in-situ continuous slab structure of multispan, plain concrete layer (3) is set gradually under described attachment strap structure sheaf (2), blotter (4), described blotter (4) is laid on base course (5).
2. one according to claim 1 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, described attachment strap structure sheaf (2) includes attachment strap, longitudinal reinforcement (14) and transverse steel (15) it is provided with in this attachment strap, one end of described attachment strap rides upon on abutment bracket (11), below attachment strap, interval arranges piling strtucture (12), and the part being positioned at piling strtucture (12) top in attachment strap is provided with diagonal bar (13).
3. one according to claim 2 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, reserved plastic flexible pipe (8) in described attachment strap, the bearing-surface (9) of described abutment bracket (11) arranges asphalt felt bed course, making attachment strap structure sheaf (2) and end of the bridge be articulated and connected by joint bar (10) through plastic flexible pipe (8) and asphalt felt bed course, described joint bar (10) is embedded in abutment bracket (11).
4. the one high embankment filled soil end of the bridge anti-settling structure stated according to claim 3, it is characterized in that, being provided with gap between described attachment strap structure sheaf (2) and Abutment Back (7), clog sealing material in this gap, described sealing material is bitumastic.
5. one according to claim 2 high embankment filled soil end of the bridge anti-settling structure, it is characterised in that described attachment strap structure sheaf (2) laterally can arrange polylith attachment strap, each attachment strap is connected by tension rib (6).
6. one according to claim 5 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, the thickness of described attachment strap communicates with lane width, is provided with subsiding crack between each attachment strap, filling rubber fastening band in this subsiding crack, and set tension rib (6) every 500mm.
7. one according to claim 1 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, the stake top of described piling strtucture (12) is arranged at middle part or the afterbody of attachment strap structure sheaf (2), and the stake top length of the piling strtucture in the middle part of being wherein positioned at is more than the stake top length of the piling strtucture of afterbody.
8. one according to claim 1 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, described plain concrete layer (3) and blotter (4) are arranged under attachment strap structure sheaf (2), and are connected mutually with piling strtucture (12).
9. one according to claim 1 high embankment filled soil end of the bridge anti-settling structure, it is characterized in that, described base course (5) is filled by compaction in layers of banketing after platform and forms, and adopts 8wt% rendzinas below pavement structure within the scope of 0.6m, its lower employing 6wt% rendzinas.
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| CN201410857434.3A CN105803922B (en) | 2014-12-30 | 2014-12-30 | A kind of high embankment filled soil end of the bridge anti-settling structure |
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| CN201410857434.3A CN105803922B (en) | 2014-12-30 | 2014-12-30 | A kind of high embankment filled soil end of the bridge anti-settling structure |
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| CN105803922A true CN105803922A (en) | 2016-07-27 |
| CN105803922B CN105803922B (en) | 2018-04-17 |
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Cited By (8)
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| CN106835956A (en) * | 2017-03-28 | 2017-06-13 | 交通运输部公路科学研究所 | Abutment Back bankets embedded rigid porous disc |
| CN107740339A (en) * | 2017-10-23 | 2018-02-27 | 浙江交通职业技术学院 | It is a kind of to be used to run the reinforced bridgehead structures of rigidity and construction method that highway administers bumping at bridge-head |
| CN110670436A (en) * | 2019-09-26 | 2020-01-10 | 华蓝设计（集团）有限公司 | Structure for preventing urban road subgrade from non-uniform settlement and construction method thereof |
| CN110735390A (en) * | 2019-11-15 | 2020-01-31 | 上海公路桥梁（集团）有限公司 | Support assembly for preventing and treating bump at bridge head and construction method thereof |
| CN110952441A (en) * | 2019-12-27 | 2020-04-03 | 昆山市交通工程质量监督站 | Prefabricated hinged type bridge head butt plate and bridge head structure suitable for deep soft soil foundation and construction method of prefabricated hinged type bridge head butt plate and bridge head structure |
| CN111827087A (en) * | 2020-07-06 | 2020-10-27 | 上海崇明水利工程有限公司 | Bridgehead butt strap structure for hydraulic engineering |
| CN112144340A (en) * | 2020-10-13 | 2020-12-29 | 福建中设工程咨询有限公司 | Prevention and control structure for vehicle bump at bridge head of highway and construction method |
| CN113550187A (en) * | 2021-06-26 | 2021-10-26 | 山东昆嵛路桥工程有限公司 | Concrete reinforcing structure and construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107740339A (en) * | 2017-10-23 | 2018-02-27 | 浙江交通职业技术学院 | It is a kind of to be used to run the reinforced bridgehead structures of rigidity and construction method that highway administers bumping at bridge-head |
| CN107740339B (en) * | 2017-10-23 | 2023-10-20 | 浙江交通职业技术学院 | Rigidity-enhanced bridge head structure for managing bridge head jumping of operation road and construction method |
| CN110670436A (en) * | 2019-09-26 | 2020-01-10 | 华蓝设计（集团）有限公司 | Structure for preventing urban road subgrade from non-uniform settlement and construction method thereof |
| CN110735390A (en) * | 2019-11-15 | 2020-01-31 | 上海公路桥梁（集团）有限公司 | Support assembly for preventing and treating bump at bridge head and construction method thereof |
| CN110952441A (en) * | 2019-12-27 | 2020-04-03 | 昆山市交通工程质量监督站 | Prefabricated hinged type bridge head butt plate and bridge head structure suitable for deep soft soil foundation and construction method of prefabricated hinged type bridge head butt plate and bridge head structure |
| CN111827087A (en) * | 2020-07-06 | 2020-10-27 | 上海崇明水利工程有限公司 | Bridgehead butt strap structure for hydraulic engineering |
| CN112144340A (en) * | 2020-10-13 | 2020-12-29 | 福建中设工程咨询有限公司 | Prevention and control structure for vehicle bump at bridge head of highway and construction method |
| CN113550187A (en) * | 2021-06-26 | 2021-10-26 | 山东昆嵛路桥工程有限公司 | Concrete reinforcing structure and construction method |
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