CN103924501A - Reinforcing construction method in partial failure repairing of rural cement pavement - Google Patents

Reinforcing construction method in partial failure repairing of rural cement pavement Download PDF

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Publication number
CN103924501A
CN103924501A CN201410185593.3A CN201410185593A CN103924501A CN 103924501 A CN103924501 A CN 103924501A CN 201410185593 A CN201410185593 A CN 201410185593A CN 103924501 A CN103924501 A CN 103924501A
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China
Prior art keywords
concrete
road
old
wire cloth
gauze wire
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CN201410185593.3A
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Chinese (zh)
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CN103924501B (en
Inventor
马强
朱健
肖衡林
李丽华
何俊
王玉
王靖
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湖北工业大学
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Priority to CN201410185593.3A priority Critical patent/CN103924501B/en
Publication of CN103924501A publication Critical patent/CN103924501A/en
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Publication of CN103924501B publication Critical patent/CN103924501B/en

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Abstract

The invention provides a reinforcing construction method in partial failure repairing of a rural cement pavement. The reinforcing construction method comprises the following steps: excavating an old concrete pavement needing to be repaired to the top surface of a roadbed and cleaning; cutting the excavated old concrete pavement and thus cutting the pavement into an inclined plane along the thickness direction of the road surface; respectively paving one layer of steel wire net on each of the bottom and the middle pat of the inclined section; paving thread steel bars and extending to a road surface region needing to be newly poured; pouring concrete into an excavated region of the old road surface to form a new concrete road surface. The invention aims to solve the road surface crushing problem in old cement road surface diseases of rural highways and useful resources including steel wires, steel bars and the like which are usual in villages can be effectively utilized; the engineering cost is saved and a repairing technology is simple, so as to provide a simple, economical and effective method for repairing the road surfaces of rural roads.

Description

Reinforcement construction method in the cement pavement local failure reparation of a kind of rural area
Technical field
The present invention relates to rigid pavement local failure restorative procedure, the reinforcement construction method in the reparation of a kind of rural area cement pavement local failure specifically.
Background technology
In the development of building in highway in China, cement concrete pavement extensively exists due to its strong basis sake, ageing-resistant, low pollution, the feature such as intensity is high, hardness is large, cost is low, in township road and road, village, is substantially all particularly use cement pavement.But along with the fast development of rural economy, the increase of the traffic volume and vehicle capacity, the destruction of old cement concrete pavement is more and more serious.There is hole groove, roadbed settlement, impeded drainage, large area fragmentation, partial collapse in many sections, repair is also more and more come into one's own, although the restorative procedure of old cement concrete pavement has a lot.But because the fund for Country Road Construction is few, category of roads is low, construction technology a little less than, therefore be applicable to the reconstruction of rural area township road and road, village and the method for repairing also little.
At present, the reparation of Old cement road face be common are to following methods:
(1) Old cement road face overlays asphaltum concrete cover-layer;
(2) former road surface is all rooted out, again overlayed cement concrete or bituminous concrete;
(3) after overlaying the reinforcement material such as geotextiles or geo-grid on former road surface, repave bituminous concrete.
But above technical scheme all exists certain limitation, for example on old cement concrete, overlay after the reinforcement material such as glass fiber grid or geotextiles Paving Bituminous Concrete again, although can strengthen the transformation to rural highway, but in Country Road Construction, utilize the material such as pitch, glass fiber grid cost too high, in rural highway maintenance is used, can not give full play to residual strength and the advantage of this type of reinforcement material.From the viewpoint of the uneconomical practicality such as volume of transport, vehicle capacity, and pitch is to surrounding soil, and groundwater pollution is very large, and much there are river, vegetation in country road side, therefore be difficult for utilizing bituminous concrete; And easily in Old cement road face asphalt overlay, produce reflection crack, although reflection crack itself is little on the functional performance impact of skin coat, but under the effect of extraneous environmental factor (as sleet, dust), usually make crack expand to surrounding rapidly, cause overlay shortening in application life, be difficult to ensure its pavement quality, can not ensure that it is durable for a long time and directly overlay cement concrete.
Summary of the invention
The object of the invention is the pavement breaking occurring in rural highway Old cement road face disease in order to overcome, differential settlement, the hole problem such as groove and propose the reinforcement construction method of a kind of rural area cement pavement local failure in repairing.
The present invention also aims to save the engineering cost in country road maintenance, reduce cost, make full use of the existing useful resources in rural area, for Country Road Construction facilitates.The repair of rural highway Old cement road face is become simply, and can effectively protect the ecological environment in rural area.
A reinforcement construction method in the cement pavement local failure reparation of rural area, comprises the steps:
(1) excavate on the old concrete road surface of needs being repaired, and excavates to roadbed end face; Roadbed after excavating is cleared up and flattened, reach and lay gauze wire cloth and concrete requirement;
(2) utilize cutting machine to cut old concrete road surface section through-thickness, section after cutting is horizontal by 30 °~45 ° angles, remove cement concrete that impact intends perfusion and the impurity of old pavement overlapping part, and water-swellable sealing rod is positioned on the section after cutting with steel nail;
(3) make the gauze wire cloth of plane net trellis;
(4) on the bottom surface after cutting, carry out lower floor's gauze wire cloth laying, and on lower floor's gauze wire cloth making lower floor as placed concrete to 1/3~1/2 place of profile height;
(5) at new, old concrete seam crossing, many longitudinal screw reinforcing bars are set: utilize on the section of auger after cutting, highly beat multiple holes for lower floor's as placed concrete surface, and longitudinal screw reinforcing bar is extended in old concrete sub-surface;
(6) on lower floor's as placed concrete, lay upper strata gauze wire cloth, extend on the section after overlap joint extremely cuts, and described upper strata gauze wire cloth is connected mutually with indented bars;
(7) build upper strata as placed concrete to old concrete road surface sustained height.
Described gauze wire cloth comprises the steel wire that many rhizoplanes are arranged, and adjacent two steel wire Nodes tangle and are wound around once, and welding or colligation are firm, can not produce loosening or displacement under stressing conditions, and the single hole area of described gauze wire cloth is about 0.01m 2.
The advantage of the reinforcement construction method in the cement pavement local failure reparation of rural area of the present invention is:
(1) construction method of the present invention takes full advantage of the useful resources such as the existing steel wire in rural area, reinforcing bar, saves the engineering cost in rural highway maintenance, reduces cost, and can make the old cement concrete pavement repair of country road become simple;
(2) indented bars has played tension and shearing resistance effect at new and old cement-concrete road joint place, the differential settlement that can prevent seam crossing to cause due to traffic load or gravity load, and improve the resistance to overturning of new-old pavement joining place.Arranging of two-layer gauze wire cloth can prevent and alleviate due to overweight load, the depression of ground and the road surface differential settlement and the destruction that cause, thus it is stressed to form an overall coordination, has ensured the globality of cement pavement, improves driving comfort level.
(3) construction method of the present invention has effectively reduced the impact of flexible pavement on rural area surrounding soil vegetation and underground water.
Brief description of the drawings
Fig. 1 is the road structure schematic diagram after the reinforcement construction method adopting in the cement pavement local failure reparation of rural area of the present invention.
In figure, 1 is old concrete road surface, and 2 is indented bars, and 3 is as placed concrete road surface, upper strata, and 4 is lower floor's gauze wire cloth, and 5 is upper strata gauze wire cloth, and 7 is water-swellable sealing rod, and 9 is lower floor's as placed concrete road surface.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described: as shown in Figure 1, the reinforcement construction method in a kind of rural area cement pavement local failure reparation, comprises the steps:
1, during the structural destruction of needs being repaired belongs to, the old concrete road surface of heavy degree excavates, and digs to former roadbed design absolute altitude.Its roadbed is carried out to compacting with road roller, until no longer sedimentation of roadbed, and the roadbed after compacting is carried out to planeness processing.Roadbed after cleaning is excavated and old concrete section, remove the material that affects as placed concrete and former roadbed bond strength;
2, utilize cutting machine to the 1 section through-thickness cutting of old concrete road surface, section after cutting is horizontal by 37 ° of angles, remove cement concrete that impact intends perfusion and the impurity of old pavement overlapping part, and water-swellable sealing rod 7 is positioned on the section after cutting with steel nail;
3, meanwhile make the gauze wire cloth 4,5 of plane net trellis;
4, on the bottom surface after cutting, carry out lower floor's gauze wire cloth 4 and lay, and on lower floor's gauze wire cloth 4 making lower floor as placed concrete road surface 9 to 1/3~1/2 place of profile height;
5, after described lower floor's as placed concrete road surface 9 makings complete,, old concrete transverse joint lap-joint new at it arranges many longitudinal screw reinforcing bars 2, the length of described indented bars is about 25cm, utilize on the section of auger after cutting, highly beat some holes for lower floor's as placed concrete surface, and longitudinal screw reinforcing bar 2 is extended to about 10cm in 1 basic unit of old concrete road surface;
6, on lower floor's as placed concrete road surface 9, lay upper strata gauze wire cloth 5, extend on the section after overlap joint extremely cuts, and described upper strata gauze wire cloth 5 and indented bars 2 are connected mutually;
7, making upper strata as placed concrete road surface 3 is to top layer step end face, with old concrete road surface 1 sustained height.
During the structural destruction on the old concrete road surface that described needs are repaired belongs to, heavy degree, road slab badly broken, affects traffic safety.
Described former roadbed is mainly that old earth road surface is directly done roadbed, old earth road surface and widened old & new integrated road bed, the newly-built roadbed that road surface forms.
The described requirement that former roadbed is cleared up is the damaged situation that comprehensively checks basic unit, and road surface and the basic unit of crowded broken, hollowing, protuberance are cleared up, and removes the material of the new cement concrete of impact and former roadbed bond strength.
Described water-swellable waterstop 7 expansion rates are little, and specification is 20 × 50mm, prevent that current from infiltrating distress in concrete, corrosion concrete.
Described indented bars 2 should be straight, must not have crackle, and there is corrosion etc. on surface, ensures that the yield strength of reinforcing bar is more than 335Mpa, and the distance of adjacent two reinforcing bars is 20~30cm, and reinforcing bar length is about 20~30cm, and diameter is about 10mm.
Described arranges indented bars in new-old concrete road surface transverse joint lap-joint, should note first the gap expansive concrete that extends to the reinforcing bar 2 in old concrete road surface 1 being filled to sealing.

Claims (2)

1. the reinforcement construction method in rural area cement pavement local failure reparation, is characterized in that comprising the steps:
(1) excavate on the old concrete road surface of needs being repaired, and excavates to roadbed end face; Roadbed after excavating is cleared up and flattened, reach and lay gauze wire cloth and concrete requirement;
(2) utilize cutting machine to cut old concrete road surface section through-thickness, section after cutting is horizontal by 30 °~45 ° angles, remove concrete that impact intends perfusion and the impurity of old pavement overlapping part, and water-swellable sealing rod is positioned on the section after cutting with steel nail;
(3) make the gauze wire cloth of plane net trellis;
(4) on the bottom surface after cutting, carry out lower floor's gauze wire cloth laying, and on lower floor's gauze wire cloth making lower floor as placed concrete to 1/3~1/2 place of profile height;
(5) at new, old concrete seam crossing, many longitudinal screw reinforcing bars are set: utilize on the section of auger after cutting, highly beat multiple holes for lower floor's as placed concrete surface, and longitudinal screw reinforcing bar is extended in old concrete sub-surface;
(6) on lower floor's as placed concrete, lay upper strata gauze wire cloth, extend on the section after overlap joint extremely cuts, and described upper strata gauze wire cloth is connected mutually with indented bars;
(7) build upper strata as placed concrete to old concrete road surface sustained height.
2. the reinforcement construction method in rural area as claimed in claim 1 cement pavement local failure reparation, it is characterized in that: described gauze wire cloth comprises the steel wire that many rhizoplanes are arranged, adjacent two steel wire Nodes tangle and are wound around once, welding or colligation are firm, under stressing conditions, can not produce loosening or displacement, the single hole area of described gauze wire cloth is about 0.01m 2.
CN201410185593.3A 2014-05-05 2014-05-05 Reinforcement construction method in the cement pavement local failure reparation of a kind of rural area CN103924501B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507109A (en) * 2016-01-14 2016-04-20 郑州大学 Damaged concrete pavement panel reinforcing structure and method
CN105507110A (en) * 2016-01-14 2016-04-20 郑州大学 Reinforcing structure and method for damaged concrete pavement panel
CN105926435A (en) * 2016-06-06 2016-09-07 湖南中路华程桥梁科技股份有限公司 Reinforced seam structure of interface of reactive powder concrete layer and conventional concrete layer and construction method of reinforced seam structure
CN105937203A (en) * 2016-06-06 2016-09-14 湖南中路华程桥梁科技股份有限公司 Reinforced joint structure of interface between reactive powder concrete layer and steel structure layer and construction method of reinforced joint structure
CN108221538A (en) * 2018-01-16 2018-06-29 长沙理工大学 The armored concrete plate method for maintaining of continuous reinforcement concrete composite bituminous paving
CN110820466A (en) * 2019-11-29 2020-02-21 中冶南方工程技术有限公司 Quick repairing method for cement concrete pavement

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JPH08100406A (en) * 1994-09-30 1996-04-16 High Frequency Heattreat Co Ltd Continuous high-tension reinforced concrete pavement structure
CN102691245A (en) * 2012-06-16 2012-09-26 山西省交通科学研究院 Method for setting back-implanted cement concrete pavement dowel bar
CN103397592A (en) * 2013-07-29 2013-11-20 华南理工大学 Ellipse steel dowel bar for cement concrete pavement
CN103526678A (en) * 2013-10-30 2014-01-22 中南林业科技大学 Construction method for enhancing structural strength of joint cement concrete pavement

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Publication number Priority date Publication date Assignee Title
JPH08100406A (en) * 1994-09-30 1996-04-16 High Frequency Heattreat Co Ltd Continuous high-tension reinforced concrete pavement structure
CN102691245A (en) * 2012-06-16 2012-09-26 山西省交通科学研究院 Method for setting back-implanted cement concrete pavement dowel bar
CN103397592A (en) * 2013-07-29 2013-11-20 华南理工大学 Ellipse steel dowel bar for cement concrete pavement
CN103526678A (en) * 2013-10-30 2014-01-22 中南林业科技大学 Construction method for enhancing structural strength of joint cement concrete pavement

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507109A (en) * 2016-01-14 2016-04-20 郑州大学 Damaged concrete pavement panel reinforcing structure and method
CN105507110A (en) * 2016-01-14 2016-04-20 郑州大学 Reinforcing structure and method for damaged concrete pavement panel
CN105926435A (en) * 2016-06-06 2016-09-07 湖南中路华程桥梁科技股份有限公司 Reinforced seam structure of interface of reactive powder concrete layer and conventional concrete layer and construction method of reinforced seam structure
CN105937203A (en) * 2016-06-06 2016-09-14 湖南中路华程桥梁科技股份有限公司 Reinforced joint structure of interface between reactive powder concrete layer and steel structure layer and construction method of reinforced joint structure
CN108221538A (en) * 2018-01-16 2018-06-29 长沙理工大学 The armored concrete plate method for maintaining of continuous reinforcement concrete composite bituminous paving
CN110820466A (en) * 2019-11-29 2020-02-21 中冶南方工程技术有限公司 Quick repairing method for cement concrete pavement

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