CN102839595A - Method for treating bump at bridge-head - Google Patents
Method for treating bump at bridge-head Download PDFInfo
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- CN102839595A CN102839595A CN2012103666000A CN201210366600A CN102839595A CN 102839595 A CN102839595 A CN 102839595A CN 2012103666000 A CN2012103666000 A CN 2012103666000A CN 201210366600 A CN201210366600 A CN 201210366600A CN 102839595 A CN102839595 A CN 102839595A
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- shrinkage joint
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Abstract
The invention discloses a method for treating bump at bridge-head. The method comprises the steps of road handling, expansion joints handling, asphalt filling and paving, expansion joints excavation and expansion joints recovery. According to the method for treating bump at bridge-head, with the adoption of novel anti-excavation technique, the paving and rolling compaction conditions of asphalt concrete close to the expansion joints are improved through road compaction and secondary excavation and recovery of the expansion joints, the compaction degree can be ensured, the height difference caused by secondary compaction of vehicle action can be reduced, and therefore, the condition of bump at bridge-head can be effectively improved.
Description
Technical field
The invention belongs to the highway maintenance technology, be specifically related to a kind of method that adopts anti-excavation technology punishment bumping at bridge-head.
Background technology
Highway communication is occupied extremely important status in national economy and people's lives, be the important symbol of weighing a national economic strength and modernization level.Along with improving constantly of road quality classification, the shared proportion of highway structures such as bridge, culvert is increasing.According to statistics, bridges and culverts only, on average about 3/kilometer of high-grade highway.But the high-grade highway operation situation from having come into operation at present exists some to go into the people's will part not to the utmost, especially is embodied in the phenomenon of these structure back filling behind abutment place ubiquities " bumping at bridge-head ".So-called " bumping at bridge-head " is meant bridge structure thing and platform back of the body road structure because sedimentation differs, and causes the vehicle of running at high speed to produce the phenomenon of jolting and jumping through the platform back of the body and place, shrinkage joint.Bumping at bridge-head is one of disease common in the present highway maintenance; Had a strong impact on road-ability; Having reduced the travel speed of vehicle and the traffic capacity of road, is one of important hidden danger of traffic safety, has damaged the social benefit and the economic benefit of high-grade highway construction.
In general, bumping at bridge-head sinks mainly due to platform back of the body subgrade soil and pavement asphalt compound secondary compaction causes.For the highway in the operation process; The sedimentation of end of the bridge subgrade soils tends towards stability basically; Therefore the subject matter that in the highway maintenance process, is faced is how to improve end of the bridge Compaction of Asphalt Concrete Pavement condition, the settling amount that elimination or minimizing cause owing to distortion under traffic effect after the punishment.To this type of situation; Existing bumping at bridge-head punishment common practices mainly comprises two kinds: one of which is that milling is heavily spread along connecing; Be that near the asphalt concrete pavement of vehicle bridge head is jumped in milling; Heavily spread new bituminous concrete then, make it to flush along connecing, reduce to eliminate the discrepancy in elevation between shrinkage joint and the road surface with the deck expansion joint position; It two is the shrinkage joint of reforming, and promptly the absolute altitude according to the end of the bridge asphalt concrete pavement cuts whole shrinkage joint, performs again.
Produce principle from bumping at bridge-head; There is following drawback in above way: 1, heavily spread along fetching for milling; Because the shrinkage joint is a concrete structure; Can not obtain compacting preferably with the bituminous mixture of its connecting position, after the compacting of hot-short driving process medium pitch concrete secondary, produce the discrepancy in elevation once more.Therefore; This method can not solve the compaction problems of position, shrinkage joint bituminous mixture at all; And it is not enough owing to compacting usually with shrinkage joint connecting position bituminous mixture; Under later stage vehicle repeat function, further produce loose, new disease such as peel off, thereby influence rideability and security performance; 2, for the shrinkage joint of reforming, owing to need all cut the shrinkage joint, and its construction technology is comparatively complicated; And construction period is longer, traffic is disturbed greatly, simultaneously because the characteristic of shrinkage joint construction technology; It unavoidably can cause certain loss to the structural performance of end of the bridge structure in transformation process, also can bring new jumping car problem in addition, i.e. the difference of shrinkage joint absolute altitude and deck paving absolute altitude; In addition, it is relatively poor to perform the economy of shrinkage joint technical scheme again.In conjunction with existing case history and effect thereof, very limited according to the bumping at bridge-head punishment effect that aforesaid way carries out, and durability is not strong.
Along with the continuous sternness of highway maintenance situation, people improve constantly the requirement of road running comfortableness and safety in addition, improve, effect a radical cure the highway bridgehead vehicle jump disease and become one of key task of current highway maintenance.Therefore, how to eliminate bumping at bridge-head effectively and maybe will jump the minimum level that car reduces, become problem demanding prompt solution in the highway maintenance.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, from the basic reason that the bumping at bridge-head disease produces, the bumping at bridge-head disease punishment method of a kind of functional performance excellence, better economy is provided.
In order to achieve the above object, the invention provides a kind of punishment method of bumping at bridge-head, may further comprise the steps:
(1) treatment of road surfaces: milling end of the bridge place asphalt concrete pavement;
(2) handle at the shrinkage joint: cut the shrinkage joint that joins and hold with the road surface; The said degree of depth that cuts is 4～5cm, and identical with the milling degree of depth on road surface in the step (1);
(3) pitch is filled out the shop: get bituminous concrete and fill out the road surface after the milling in shop step (1), and extend the position, shrinkage joint of spreading after cutting to the step (2); Carry out spreading repeatedly to filling out concrete road surface of black top and shrinkage joint then;
(4) shrinkage joint excavation: the bituminous concrete of place, shrinkage joint in the step (3) being filled out the shop excises, and continues to cut the shrinkage joint downwards along this excision face; The degree of depth at the place of cutting, said shrinkage joint is 7～12cm;
(5) recover at the shrinkage joint: the shrinkage joint of heavily spreading excavation in the step (4); Asphalt concrete pavement and deck paving in shrinkage joint behind the said heavy shop and the step (3) after the spreading flush.
Wherein, adopt milling machine that the shrinkage joint is laterally cut in the step (2), cutting width is 25cm.
Step (3) is carried out before bituminous concrete fills out the shop, the face that cuts pad one deck fine grained sand or gunnysack at the shrinkage joint.Specifically realize by following technical scheme:
The place of cutting at shrinkage joint is the skewed slot shape in the step (4), is 12cm near the end degree of depth of said asphalt concrete pavement, and the other end degree of depth is 7cm.
The heavily shop process at shrinkage joint is following in the step (5):
A, bar planting: in said step (4), implant screw-thread steel in the concrete at the place of cutting, shrinkage joint,
B, epoxy resin apply: after the bar planting, and the face that cuts at cleaning shrinkage joint, and on the face of cutting, smear epoxy resin;
C, steel mesh reinforcement are laid: in the groove that the place of cutting forms, lay steel mesh reinforcement;
D, build again: get the C40 concrete at last and build the shrinkage joint again.
The present invention compares prior art and has the following advantages: the present invention adopts anti-excavation novel process; Through the compacting of road pavement and the secondary trenchless rehabilitation at shrinkage joint; That has improved near the bituminous concrete shrinkage joint paves, rolls condition; Can guarantee its degree of compaction, reduce the discrepancy in elevation that vehicle effect secondary compaction causes, and then effectively improve the bumping at bridge-head situation.And the present invention heavily spreads road-surface milling and reforms with the shrinkage joint that both combine, and only need carry out part to the shrinkage joint of shortcut face portion and cut, and has reduced cost, and has had good functional performance.Bumping at bridge-head disease punishment technology provided by the invention can better be improved highway bridge bumping at bridge-head situation, guarantees vehicle ' comfortableness and safety.
Description of drawings
Fig. 1 is end of the bridge shrinkage joint and a road structure sketch map before the bumping at bridge-head punishment;
Fig. 2 is that asphalt concrete pavement and shrinkage joint milling cut sketch map;
Fig. 3 is that bituminous concrete paves, rolls the scope sketch map;
Fig. 4 is the anti-sketch map that excavates in shrinkage joint;
Fig. 5 is that sketch map is recovered at the shrinkage joint.
Among the figure, 1-end of the bridge asphalt concrete pavement, 2-shrinkage joint, 3-shrinkage joint shaped steel; 4-shrinkage joint milling scope, 5-flexible pavement milling scope, 6-particulate layer of sand, the new asphalt concrete structure of 7-; The 8-epoxy resin layer, 9-indented bars, 10-C40 cement concrete layer, 11-steel mesh reinforcement.
The specific embodiment
Below in conjunction with practical implementation technology the present invention is elaborated:
1, preparation of construction
Ground surface material: bituminous concrete, C40 concrete, early strength admixture, fine grained sand (or gunnysack), epoxy resin, indented bars (diameter 16mm), steel mesh reinforcement (diameter 10mm, spacing 10cm);
Plant and instrument: milling machine, pneumatic pick, paver, steel roller, forest extinguishing device.
, treatment of road surfaces (milling of end of the bridge asphalt concrete pavement)
According to the road gradient requirement, adopt milling machine that end of the bridge asphalt concrete pavement 1 is carried out milling.For guaranteeing the bituminous mixture laying scope of operation, the length of road-surface milling scope 5 should not be less than 20m.
, the shrinkage joint punishes in advance
Adopt milling machine that horizontal milling is carried out at shrinkage joint 2, width 25cm, the degree of depth 5cm of shrinkage joint milling scope 4, the about 20cm of distance of shaped steel 3 apart from the shrinkage joint.Do not meet the demands like milling face, should continue to adopt pneumatic pick to carry out manual work and cut;
Utilize the forest extinguishing device that milling (cutting) face is cleaned out;
Before bituminous concrete paves, be 1cm left and right sides particulate layer of sand 6 at shrinkage joint position pad one layer thickness of milling (cutting), gunnysack also capable of using when condition does not satisfy should the zone be convenient to cutting and remove guaranteeing behind the bituminous concrete that paves.
, bituminous mixture laying and rolling
Get bituminous concrete and fill out milling scope 5 places that pave, and milling scope 4 places to the shrinkage joint that pave;
Adopt steel roller to roll for the bituminous concrete that paves; Near for the position, end of the bridge shrinkage joint end of the bridge asphalt concrete pavement 1 should roll repeatedly; Guarantee that its degree of compaction can reach normal highway section level and requirement, finally form new asphalt concrete structure 7.
, the shrinkage joint is counter excavates
After the bituminous concrete decking and rolling was accomplished, milling scope 4 incised removed at the shrinkage joint with the bituminous concrete at new asphalt concrete structure 7 places;
The sand cushion cleaning of adopting the forest extinguishing device will cut on the face is clean;
Original face of cutting continues to cut the shrinkage joint along the shrinkage joint, and the about 2cm of the degree of depth that the deck paving end continues to cut builds in order to improve the follow-up cement concrete of end of the bridge section simultaneously, vibrates, quality such as health, and the end of the bridge end cuts the about 7cm of the degree of depth.
, the shrinkage joint recovers
Shrinkage joint cement concrete to after cutting carries out bar planting, and the indented bars 9 of diameter 16mm is adopted in bar planting;
After the bar planting, adopt the forest extinguishing device that the cleaning face of cutting is cleaned out, and on the face of cutting, smear epoxy resin, form epoxy resin layer 8, to strengthen the bonding between the new-old concrete;
Lay steel mesh reinforcement 11 (bar diameter 10mm, vertical, horizontal spacing 10cm steel mesh reinforcement) on the face cutting after the cleaning, recover the structural strength at shrinkage joint;
Again build the C40 concrete (satisfying the engineering universal standard) that contains early strength admixture, form the C40 layer of concrete 10 on surface, before the cement concrete initial set, guarantee that the cement concrete of building again is connected smooth-going with road surface, bridge floor.
, open to traffic
The construction area cleaning is clean, treat that cement concrete health (72h) intensity forms the back open to traffic.
, quality acceptance standard
Bumping at bridge-head punishment technical quality is carried out an acceptance inspection, and the result is as shown in table 1 below.
Table 1 construction quality inspection result
Can find out that from last table after the present invention's punishment, through using after a while, asphalt concrete pavement does not have secondary compaction basically, flushes with the shrinkage joint, the bumping at bridge-head situation has obtained obvious improvement.The bumping at bridge-head disease punishment technology that the present invention proposes is mainly based on the anti-excavation method in shrinkage joint; Heavily spread along connecing and reform the shrinkage joint to substitute existing milling; Both solved near the bituminous mixture compaction problems shrinkage joint, and improved the bumping at bridge-head situation, the shrinkage joint method has been practiced thrift overall cost than reforming; Reduced interference to traffic; And facts have proved that this technology has functional performance preferably, and reduced position, shrinkage joint flexible pavement to a certain extent and produced loose, as disease such as to peel off risk.
Claims (5)
1. the punishment method of a bumping at bridge-head is characterized in that, may further comprise the steps:
(1) treatment of road surfaces: milling end of the bridge place asphalt concrete pavement;
(2) handle at the shrinkage joint: cut the shrinkage joint that joins and hold with the road surface; The said degree of depth that cuts is 4～5cm, and identical with the milling degree of depth on road surface in the step (1);
(3) pitch is filled out the shop: get bituminous concrete and fill out the road surface after the milling in shop step (1), and extend the position, shrinkage joint of spreading after cutting to the step (2); Carry out spreading repeatedly to filling out concrete road surface of black top and shrinkage joint then;
(4) shrinkage joint excavation: the bituminous concrete of place, shrinkage joint in the step (3) being filled out the shop excises, and continues to cut the shrinkage joint downwards along this excision face; The degree of depth at the place of cutting, said shrinkage joint is 7～12cm;
(5) recover at the shrinkage joint: the shrinkage joint of heavily spreading excavation in the step (4); Asphalt concrete pavement and deck paving in shrinkage joint behind the said heavy shop and the step (3) after the spreading flush.
2. punishment method according to claim 1 is characterized in that, the place of cutting at shrinkage joint is the skewed slot shape in the said step (4), is 12cm near the end degree of depth of said asphalt concrete pavement, and the other end degree of depth is 7cm.
3. punishment method according to claim 1 is characterized in that, the heavily shop process at shrinkage joint is following in the said step (5):
A, bar planting: in said step (4), implant screw-thread steel in the concrete at the place of cutting, shrinkage joint;
B, epoxy resin layer apply: after the bar planting, and the face that cuts at cleaning shrinkage joint, and on the face of cutting, smear epoxy resin;
B, steel mesh reinforcement are laid: in the groove that the place of cutting forms, lay steel mesh reinforcement;
C, build again: get the C40 concrete at last and build the shrinkage joint again.
4. according to the arbitrary described punishment method of claim 1 to 3, it is characterized in that adopt milling machine that the shrinkage joint is laterally cut in the said step (2), cutting width is 25cm.
5. according to the arbitrary described punishment method of claim 1 to 3, it is characterized in that said step (3) is carried out before bituminous concrete fills out the shop, the face that cuts pad one deck fine grained sand or gunnysack at the shrinkage joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210366600.0A CN102839595B (en) | 2012-09-26 | 2012-09-26 | Method for treating bump at bridge-head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210366600.0A CN102839595B (en) | 2012-09-26 | 2012-09-26 | Method for treating bump at bridge-head |
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| Publication Number | Publication Date |
|---|---|
| CN102839595A true CN102839595A (en) | 2012-12-26 |
| CN102839595B CN102839595B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210366600.0A Expired - Fee Related CN102839595B (en) | 2012-09-26 | 2012-09-26 | Method for treating bump at bridge-head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755310A (en) * | 2018-06-11 | 2018-11-06 | 河南省公路工程试验检测中心有限公司 | A kind of quantitative detection of Bridgehead-Jumping Disease and Treatment Methods |
| CN110792009A (en) * | 2019-10-17 | 2020-02-14 | 龙德建设有限公司 | Bridge head bump prevention and control structure based on concrete composite pavement and laying method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105494A (en) * | 1990-12-03 | 1992-04-21 | Highway Construction Bridge Systems, Inc. | Continuously moving highway reconstruction device |
| CN101718075A (en) * | 2009-10-30 | 2010-06-02 | 长安大学 | Repair method of bridge head jump-driving road section surface |
| CN101967794A (en) * | 2010-09-18 | 2011-02-09 | 余闯 | New technology for treating vehicle bump at bridge ends |
| CN102051861A (en) * | 2009-11-02 | 2011-05-11 | 郑州优特基础工程维修有限公司 | Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof |
-
2012
- 2012-09-26 CN CN201210366600.0A patent/CN102839595B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105494A (en) * | 1990-12-03 | 1992-04-21 | Highway Construction Bridge Systems, Inc. | Continuously moving highway reconstruction device |
| CN101718075A (en) * | 2009-10-30 | 2010-06-02 | 长安大学 | Repair method of bridge head jump-driving road section surface |
| CN102051861A (en) * | 2009-11-02 | 2011-05-11 | 郑州优特基础工程维修有限公司 | Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof |
| CN101967794A (en) * | 2010-09-18 | 2011-02-09 | 余闯 | New technology for treating vehicle bump at bridge ends |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755310A (en) * | 2018-06-11 | 2018-11-06 | 河南省公路工程试验检测中心有限公司 | A kind of quantitative detection of Bridgehead-Jumping Disease and Treatment Methods |
| CN108755310B (en) * | 2018-06-11 | 2020-05-12 | 河南省公路工程试验检测中心有限公司 | Quantitative detection and treatment method for bump at bridge head |
| CN110792009A (en) * | 2019-10-17 | 2020-02-14 | 龙德建设有限公司 | Bridge head bump prevention and control structure based on concrete composite pavement and laying method thereof |
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| CN102839595B (en) | 2014-12-10 |
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Granted publication date: 20141210 |