CN106284053A - A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head - Google Patents
A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head Download PDFInfo
- Publication number
- CN106284053A CN106284053A CN201610636739.0A CN201610636739A CN106284053A CN 106284053 A CN106284053 A CN 106284053A CN 201610636739 A CN201610636739 A CN 201610636739A CN 106284053 A CN106284053 A CN 106284053A
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- Prior art keywords
- bridge
- table shape
- roadbed
- prismatic table
- road
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of road and bridge attachment structure effectively slowing down bumping at bridge-head.This attachment structure includes anti-prismatic table shape structure and filler, it utilizes anti-prismatic table shape structure and is mixed into the stable soil of native waterglass that waterglass processed, formation good integrity, the flexible structural layer that rigidity is bigger, use modulus gradual change principle, consider ground and roadbed two parts settlement factors simultaneously, at road-bridge transition section, anti-prismatic table shape structural strengthening district is set, by adding the stable soil of waterglass in this structural strengthening district, abutment is fixed in flexible structural layer one end, the other end is connected with roadbed, eliminate excessive relative settlement, it is achieved rigidity abutment and the smooth transition of flexible subgrade modulus.The attachment structure of the present invention can reduce bumping at bridge-head effectively and secondary jumps car problem, improves comfortableness and the safety of driving, the most greatly reduces the maintenance costs that end of the bridge processes, remarkable in economical benefits.
Description
Technical field
The invention belongs to road and bridge junction processing technology field, effectively slow down the road and bridge of bumping at bridge-head even particularly to a kind of
Access node structure, can effectively administer bumping at bridge-head and the road and bridge attachment structure of end of the bridge secondary jumping car.
Background technology
Bumping at bridge-head is generally abutment and is drawn from the differential subsidence change caused owing to " hard and soft " degree is different at roadbed
Rising, its generation can affect the comfort level of driving, degree of safety, can cause bigger harm the most on a highway, simultaneously
The maintenance cost of many bridges can be increased.Chinese scholars has been working hard solve this bridge danger disease for many years, existing
Conventional solution generally uses the method for the foundation stabilizations such as GSZ method, cushion, CFG stake, cement mixing pile method.
This type of method achieves reasonable effect really in end of the bridge section in fact, but actually simply foundation stabilization section be slow down difference
Sedimentation, is equivalent to relative settlement position to elapse backward, adds lapping plate and still can produce just at the roadbed of untreated section
Soft uneven excessive settlement and vehicle bump at bridge ends can be formed all the time.Therefore, bumping at bridge-head common fault the most for a long time, anxious
Rational structure and filler is needed to alleviate as early as possible or solve this disease, to reduce the spending that disaster occurs and safeguards.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, according to the principle of " rigid-flexibility transition " punishment bumping at bridge-head,
There is provided a kind of road and bridge attachment structure effectively slowing down bumping at bridge-head, it is possible to effectively reduce bumping at bridge-head and secondary is jumped car and asked
Topic, improves comfortableness and the safety of driving, the most greatly reduces the maintenance costs that end of the bridge processes, remarkable in economical benefits.
Thinking of the present invention: utilize anti-prismatic table shape structure and be mixed into the stable soil of native waterglass that waterglass processed, shape
The flexible structural layer that integral property is good, rigidity is bigger, uses modulus gradual change principle, considers ground and the sedimentation of roadbed two parts simultaneously
Factor, arranges anti-prismatic table shape structural strengthening district at road-bridge transition section, by adding the stable soil of waterglass in this structural strengthening district, soft
Property structure sheaf one end be fixed on abutment, the other end is connected with roadbed, eliminates excessive relative settlement, it is achieved rigidity abutment is with flexible
The smooth transition of subgrade modulus.
The present invention is achieved in that a kind of road and bridge attachment structure effectively slowing down bumping at bridge-head, and this attachment structure is positioned at
Between abutment and roadbed, this attachment structure includes after anti-prismatic table shape structure and filler, one end of anti-prismatic table shape structure and abutment
Bridge-Culvert Platform Back connect, by hazard to bridge's pier excessively to placement in layers district, the other end of anti-prismatic table shape structure is fixed on roadbed, instead
The bottom of prismatic table shape structure is dug flat, forms gentle slope with roadbed, and the gradient, between 30 ° ~ 40 °, constitutes anti-prismatic table shape structure, gentle slope
Effect is the differential settlement slowing down gradual change type, i.e. the sudden change formula on road surface is settled and slows down as gradient type sedimentation, it is possible to effectively subtracts
Slow end of the bridge secondary jumps car phenomenon, makes driving comfort level reach optimal；Anti-prismatic table shape structure while being gentle slope structure, it is with domatic
Contact surface and the whole placement in layers district of contact need to carry out changing filling out, and change the soil that filler uses mixed processing to cross, fill filler and adopt
With the stable soil of waterglass, filling-up thickness fills according to roadbed filling specification thickness；Placement in layers district uses placement in layers method to process,
Every thickness 30cm and all separating with geonet after filling, the effect of geonet is that each layer filler is locked in together, and is formed stably
Plane so that this layer of sedimentation and deformation is effectively reduced and is controlled；Bridge-Culvert Platform Back and the hazard to bridge's pier of subgrade and pavement joint,
It act as rigid-flexibility transition section, it is possible to effectively slow down the road surface of roadbed and the jumping car phenomenon of abutment joint.
It is 10 ~ 15% that described waterglass stablize soil water glass to mix mass ratio.
The specification of described geonet is material thickness 1.25mm, highly 10cm or 15cm, welds away from 40cm or 47cm, geonet strong
Degree index: hot strength >=25MPa, stretch modulus >=650MPa, weld seam room temperature peel strength >=100Ncm, brittle temperature
≥50℃。
The invention have the benefit that
1. economic benefit.Every year problem of bumping at bridge-head is repaired for highway construction department and substantial contribution need to be put into, subtract
The maintenance costs that little annual end of the bridge processes.
2. social benefit.Effectively reduce Problems of Bump at Highway Bridge Head, improve comfortableness and the safety of driving, produce relatively
Good social benefit.
3. by waterglass being stablized native and anti-prismatic table shape structure, eliminate excessive relative settlement, it is achieved rigidity abutment with
The smooth transition of flexible subgrade modulus, reduces jump shot and jumps car and secondary jumping car problem.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the road and bridge attachment structure effectively slowing down bumping at bridge-head of the present invention.
Labelling in figure: 1-abutment；2-Bridge-Culvert Platform Back；3-hazard to bridge's pier；4-placement in layers district；The former line of slope of 5-；6-water glass
The stable soil of glass；7-geonet；8-roadbed.
Detailed description of the invention
Embodiment:
A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head, this attachment structure between abutment 1 and roadbed 8, this connection
Structure includes that anti-prismatic table shape structure and filler, one end of anti-prismatic table shape structure connect, by bridge with the Bridge-Culvert Platform Back 2 after abutment 1
Platform attachment strap 3 excessively arrives placement in layers district 4, and the other end of anti-prismatic table shape structure is fixed on roadbed 8, the bottom of anti-prismatic table shape structure
Digging flat, form gentle slope with roadbed 8, the gradient, between 30 ° ~ 40 °, constitutes anti-prismatic table shape structure, and the effect on gentle slope is to slow down gradual change
The differential settlement of formula, i.e. settles the sudden change formula on road surface and slows down as gradient type sedimentation, it is possible to effectively slow down end of the bridge secondary and jump car
Phenomenon, makes driving comfort level reach optimal；Anti-prismatic table shape structure while being gentle slope structure, its with the domatic contact surface contacted and
Whole placement in layers district 4 need to carry out changing filling out, and changes the soil that filler uses mixed processing to cross, and fills filler and uses the stable soil of waterglass
6, filling-up thickness fills according to roadbed filling specification thickness；Placement in layers district 4 uses placement in layers method to process, every thickness 30cm and
All separating with geonet 7 after filling, the effect of geonet 7 is that each layer filler is locked in together, and forms stable plane so that
This layer of sedimentation and deformation is effectively reduced and is controlled；Bridge-Culvert Platform Back 2 and the hazard to bridge's pier 3 of joint, roadbed 8 road surface, it act as
Rigid-flexibility transition section, it is possible to effectively slow down the road surface of roadbed 8 and the jumping car phenomenon of abutment 1 joint.
In the stable soil 6 of described waterglass, waterglass mixes mass ratio is 12.5%.
Described geonet 7 specification is that material thickness 1.25mm, highly 10cm, weldering are away from 40cm, the intensity index of geonet 7: stretching
Intensity=25MPa, stretch modulus=650MPa, weld seam room temperature peel strength=100Ncm, brittle temperature=50 DEG C.
The present embodiment effectively slows down the road and bridge attachment structure of bumping at bridge-head and follows the steps below construction:
1. pressure of shaking is flattened
The foundation surface of Bridge-Culvert Platform Back 2 with the transitional region of roadbed 8 carries out leveling shake pressure.
2. the stable soil 6 of waterglass is filled
The stone of the stable soil 6 of waterglass uses the artificial mode combined with machinery, first stirs with hook machine, then with machinery
Filling to void fills out thickness, then uses hand-stuff dead angle, finally flattens.
3. it is compacted
Use vibrated roller compacting filler, then lay geonet 7, make one end of geonet 7 be fixed to Bridge-Culvert Platform Back 2, separately
One end is fixed to roadbed 8.
4. repeat step 2. and 3. fill the stable soil 6 of waterglass and be compacted lay geonet 7, until the top layer of abutment 1, i.e.
Complete the construction of attachment structure.
Claims (1)
1. effectively slowing down a road and bridge attachment structure for bumping at bridge-head, this attachment structure is positioned between abutment (1) and roadbed (8),
This attachment structure includes anti-prismatic table shape structure and filler, one end of anti-prismatic table shape structure and abutment (1) Bridge-Culvert Platform Back (2) below
Connecting, by hazard to bridge's pier (3) excessively to placement in layers district (4), the other end of anti-prismatic table shape structure is fixed on roadbed (8), instead
The bottom of prismatic table shape structure is dug flat, forms gentle slope with roadbed (8), and the gradient, between 30 ° ~ 40 °, constitutes anti-prismatic table shape structure, slow
The effect on slope is the differential settlement slowing down gradual change type, i.e. the sudden change formula on road surface is settled and slows down as gradient type sedimentation, it is possible to has
Effect slows down end of the bridge secondary and jumps car phenomenon, makes driving comfort level reach optimal；Anti-prismatic table shape structure while being gentle slope structure, its with
The contact surface of domatic contact and whole placement in layers district (4) need to carry out changing filling out, and change the soil that filler uses mixed processing to cross, fill
Filler uses the stable soil (6) of waterglass, and filling-up thickness fills according to roadbed filling specification thickness；Placement in layers district (4) uses and divides
Layer fills method and processes, every thickness 30cm and all use geonet (7) to separate after filling, and the effect of geonet (7) is each layer filler
It is locked in together, forms stable plane so that this layer of sedimentation and deformation is effectively reduced and control；Bridge-Culvert Platform Back (2) and road
The hazard to bridge's pier (3) of base (8) joint, road surface, it act as rigid-flexibility transition section, it is possible to effectively slow down road surface and the bridge of roadbed (8)
The jumping car phenomenon of platform (1) joint；
In the stable soil (6) of described waterglass, waterglass mixes mass ratio is 10 ~ 15%；
The specification of described geonet (7) is material thickness 1.25mm, highly 10cm or 15cm, welds away from 40cm or 47cm, geonet (7)
Intensity index: hot strength >=25MPa, stretch modulus >=650MPa, weld seam room temperature peel strength >=100Ncm, low temperature brittleness temperature
Spend >=50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610636739.0A CN106284053A (en) | 2016-08-06 | 2016-08-06 | A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610636739.0A CN106284053A (en) | 2016-08-06 | 2016-08-06 | A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head |
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|---|---|
| CN106284053A true CN106284053A (en) | 2017-01-04 |
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| CN201610636739.0A Pending CN106284053A (en) | 2016-08-06 | 2016-08-06 | A kind of road and bridge attachment structure effectively slowing down bumping at bridge-head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110258367A (en) * | 2019-06-24 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | Transition structure is contained on a kind of culvert and road |
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| CN2627055Y (en) * | 2003-05-30 | 2004-07-21 | 长安大学 | U-form abutment soft patch |
| KR20040086653A (en) * | 2003-04-03 | 2004-10-12 | 주식회사 용마엔지니어링 | bridge and construction process with integral pier-type mixed abutment |
| CN102041759A (en) * | 2010-11-26 | 2011-05-04 | 合肥工业大学科教开发部 | Transition roadway for managing bumping at bridge-head |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN102635104A (en) * | 2012-04-11 | 2012-08-15 | 华南理工大学 | Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof |
| CN105401530A (en) * | 2015-12-18 | 2016-03-16 | 江苏兆通工程技术有限公司 | Structural layer of bridge abutment back and construction process thereof |
-
2016
- 2016-08-06 CN CN201610636739.0A patent/CN106284053A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040086653A (en) * | 2003-04-03 | 2004-10-12 | 주식회사 용마엔지니어링 | bridge and construction process with integral pier-type mixed abutment |
| CN2627055Y (en) * | 2003-05-30 | 2004-07-21 | 长安大学 | U-form abutment soft patch |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN102041759A (en) * | 2010-11-26 | 2011-05-04 | 合肥工业大学科教开发部 | Transition roadway for managing bumping at bridge-head |
| CN102635104A (en) * | 2012-04-11 | 2012-08-15 | 华南理工大学 | Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof |
| CN105401530A (en) * | 2015-12-18 | 2016-03-16 | 江苏兆通工程技术有限公司 | Structural layer of bridge abutment back and construction process thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106835956B (en) * | 2017-03-28 | 2018-08-31 | 交通运输部公路科学研究所 | Abutment Back bankets embedded rigid porous disc |
| CN110258367A (en) * | 2019-06-24 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | Transition structure is contained on a kind of culvert and road |
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Application publication date: 20170104 |
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