CN103194949B - Structure and method for repairing cracks of oblique prestressed cement concrete pavement - Google Patents
Structure and method for repairing cracks of oblique prestressed cement concrete pavement Download PDFInfo
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- CN103194949B CN103194949B CN201310115758.5A CN201310115758A CN103194949B CN 103194949 B CN103194949 B CN 103194949B CN 201310115758 A CN201310115758 A CN 201310115758A CN 103194949 B CN103194949 B CN 103194949B
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Abstract
The invention relates to a technology for repairing cracks of an oblique prestressed cement concrete pavement, and discloses a structure and a method for repairing cracks of an oblique prestressed cement concrete pavement. The oblique prestressed cement concrete pavement comprises a prestressed reinforcement and a sliding layer, and is characterized in that the upper part of the prestressed reinforcement is provided with a cracking groove formed along the crack, the bottom of the cracking groove is provided with a plurality of drill holes communicated with the sliding layer at intervals along the crack, the cracking groove is internally provided with a horizontal reinforcement cage, each drill hole is internally provided with a vertical reinforcement cage, and the cracking groove and the drill holes are internally filled with a shrinking-free grouting material. The method comprises the following steps of: drilling in a cracking way, previously grouting and grouting by means of rebar binding, so that the transverse cracks generated on the oblique prestressed cement concrete pavement can be quickly repaired; and therefore, the method is simple and high in reliability.
Description
Technical field
The present invention relates to cement concrete cracks repairing technique, particularly one oblique prestressing force cement concrete cracks preparing structure and method for repairing and mending.
Background technology
In recent years, along with the development of communications and transportation, when heavy burden Heavy Traffic and pitch price are high, the new opplication research of cement pavement enters a brand-new stage.Cement concrete pavement has advantageous advantage, and its pavement strength is high, good stability, long service life, but road surface easily exists a large amount of shrinkage joint, cause often occurring squeezing broken, arch upward, the disease such as faulting of slab ends, purt mud; Meanwhile, a large amount of shrinkage joint also can increase road rumble, the comfortableness of impact driving.Prestressed concrete pavement can adopt little transverse joint to reach surfacing and eliminate the requirement in crack.
Prestressed concrete pavement has that bearing capacity is high, non-deformability is strong, and the features such as pavement durability is high, road-ability is good, nineteen forties possesses some special knowledge abroad and develops.Use is the earliest in France, and Britain and other European countries successively used it on pavement of road or airfield pavement afterwards.The country such as the U.S., Japan and the former Soviet Union has also all built prestressed concrete pavement and the airfield pavement of some.These road surface prestressed reinforcements are longitudinal laying, and long construction period, and construction is complicated, and the longitudinal direction that the applying of longitudinal prestressing substantially increases road surface holds lotus ability, but on laterally almost without affecting.
Oblique prestressing force cement concrete pavement is a kind of novel cement concrete pavement structure pattern, this road structure arranges two-layer oblique prestressed reinforcement on road surface, the horizontal and vertical generation prestressing force on road surface, the supporting capacity on road surface increases substantially, and increase its application life, improve road-ability.
But oblique prestressing force cement concrete pavement due to concrete slab longer, under variations in temperature, the frictional resistance stress of concrete slab bottom surface may cause generation crack, road surface, crack place easily produces and peels off, and water enters from crack, cause sub-surface to destroy, thus cause the destruction of road structure.
Summary of the invention
The object of the present invention is to provide a kind of oblique prestressing force cement concrete cracks preparing structure and method for repairing and mending, the transverse crack that oblique prestressing force cement concrete pavement can be made to produce carries out Rapid-Repair, and method is simple, and reliability is strong.
For achieving the above object, the present invention is achieved by the following technical solutions.
(1) a kind of preparing structure of oblique prestressing force cement concrete cracks, wherein, described oblique prestressing force cement concrete pavement comprises prestressed reinforcement and sliding layer, it is characterized in that, the top of described prestressed reinforcement is provided with the slot driller offered along crack, be interval with the multiple borings being communicated with described sliding layer along fractuer direction bottom slot driller, horizontal reinforcement cage is provided with in described slot driller, be provided with vertical reinforcing steel bar cage in described boring, described slot driller and the interior grouting of described boring have contraction-free grouting concrete.
Feature and further improvement of the technical program are:
The reinforcing steel bar cage of described horizontal reinforcement cage to be cross section be rectangle, comprises four horizontal tectonics reinforcing bars be arranged in parallel and along the spaced rectangle hoop in described horizontal tectonics reinforcing bar direction.
Described vertical reinforcing steel bar cage is column reinforcing steel bar cage, the ring-shaped stirrup comprising at least three vertical distributing bars circumferentially axially arranged outside and arrange along described vertical distributing bar direction.
The end face of described vertical reinforcing steel bar cage and the end face of described horizontal reinforcement cage are in same level and lower than pavement-height, the end face of described vertical reinforcing steel bar cage and the end face of described horizontal reinforcement cage are interconnected.
(2) method for repairing and mending for oblique prestressing force cement concrete cracks, wherein, described oblique prestressing force cement concrete pavement comprises prestressed reinforcement and sliding layer, it is characterized in that, comprises the following steps:
A () is cracked boring: offering a width along crack is the slot driller of W, slot driller bottom surface is positioned at more than prestressed reinforcement, W is the minimum repairing width of transverse crack, bottom slot driller, be then drilled with the multiple borings being communicated with described sliding layer along fractuer direction interval.
(b) pregrouting: rinse slot driller and boring, contraction-free grouting concrete is added water and mixes to evenly without caking, stir again after slaking, and be grouted in boring, then with pneumatic mortar machine pressurization in boring, the slurries in boring are flowed in the space at sliding layer top around.Feature and further improvement of the technical program are:
Described contraction-free grouting concrete is the general contraction-free grouting concrete of boss's glue NS60, and it is 25:4.4 with the mixed weight ratio of water.
C () pricks muscle grouting: be first arranged in boring by vertical reinforcing steel bar cage, pour into contraction-free grouting concrete in boring; Then, horizontal reinforcement cage is placed in slot driller, the end face level of its end face and vertical reinforcing steel bar cage, and mutually after overlap joint, carries out watering, plugging and pounding with contraction-free grouting concrete, make the road surface of newly building and the smooth connection of adjacent old pavement.Feature and further improvement of the technical program are:
Described contraction-free grouting concrete is the mixture of boss's glue NS60, rubble (diameter is 10-20mm) and water, and wherein the weight ratio of boss's glue NS60 and rubble is 7:3 ~ 6:4, and the weight ratio of water and boss's glue NS60 is 0.18.
One of the present invention oblique prestressing force cement concrete cracks preparing structure and method for repairing and mending, crack for oblique prestressing force cement concrete pavement gives concrete repairing measures and method, carry out boring at prestressed reinforcement layer to repair, fill up with boss's glue simultaneously, intensity is comparatively large, and the contraction-free grouting concrete of use affects little by environment temperature etc., can reach smooth seamless repairing with old road surface, method for repairing and mending is simple, and reliability is strong.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Fig. 1 is longitudinal elevation of a kind of oblique prestressing force cement concrete cracks preparing structure of the present invention and method for repairing and mending;
The cross section elevation that Fig. 2 is the oblique prestressing force cement concrete cracks preparing structure shown in Fig. 1 and method for repairing and mending;
The plan view of the horizontal reinforcement cage that Fig. 3 is the oblique prestressing force cement concrete cracks preparing structure shown in Fig. 1 and method for repairing and mending;
The plan view of the vertical reinforcing steel bar cage that Fig. 4 is the oblique prestressing force cement concrete cracks preparing structure shown in Fig. 1 and method for repairing and mending.
In figure: 1, horizontal reinforcement cage; 2, vertical reinforcing steel bar cage; 3, hole; 4, horizontal tectonics reinforcing bar; 5, rectangle hoop; 6, ring-shaped stirrup; 7, vertical distributing bar.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, be longitudinal elevation and the cross section elevation of a kind of oblique prestressing force cement concrete cracks preparing structure of the present invention and method for repairing and mending.Wherein, if the width of this oblique prestressing force cement concrete pavement is B, the height of cement concrete slab is h, slot driller is cut with along pavement crack cutting machine, the minimum repairing width in the width of slot driller to be W, W be crack (when crack and road surface x wire is into θ angle spend time, W=B*tg θ), slot driller bottom surface is positioned at more than prestressed reinforcement, is h/2.Bottom prestressed reinforcement, be drilled with the boring 3 that diameter is 10cm with electric drill, boring 3 is at interval of 20cm arrangement, and drilling depth is h/2, and boring 3 is communicated with sliding layer.Be provided with horizontal reinforcement cage 1 in slot driller, in boring 3, be provided with vertical reinforcing steel bar cage 2.
With reference to Fig. 3, Fig. 4, be the oblique prestressing force cement concrete cracks preparing structure shown in Fig. 1 and the horizontal reinforcement cage of method for repairing and mending and the plan view of vertical reinforcing steel bar cage.Horizontal reinforcement cage 1 cross section is the reinforcing steel bar cage of rectangle, comprise four horizontal tectonics reinforcing bars 4 be arranged in parallel and along the spaced rectangle hoop 5 in horizontal tectonics reinforcing bar 4 direction, between rectangle hoop 5, interval 20cm is arranged, the diameter of horizontal tectonics reinforcing bar 4 is 8mm, the diameter of rectangle hoop 5 is 6mm, the width of rectangle hoop 5 is (W-6) cm, and length is (B-10) cm, height for after installing lower than pavement-height 3cm; Vertical reinforcing steel bar cage 2 is column reinforcing steel bar cage, the ring-shaped stirrup 6 comprising at least three vertical distributing bars 7 circumferentially axially arranged outside and arrange along vertical distributing bar 7 direction, the diameter of vertical distributing bar 7 is 8mm, the diameter of ring-shaped stirrup 6 is 6mm, and the diameter of vertical reinforcing steel bar cage 2 is 5cm; The end face of vertical reinforcing steel bar cage 2 and the end face of horizontal reinforcement cage 1 are in same level and lower than pavement-height 3cm, the end face of vertical reinforcing steel bar cage 2 and the end face of horizontal reinforcement cage 1 are interconnected.
The method for repairing and mending step of oblique prestressing force cement concrete cracks of the present invention is as follows:
A () is cracked boring: offering a width along crack is the slot driller of W, slot driller bottom surface is positioned at more than prestressed reinforcement, namely the degree of depth of slot driller is h/2, W is the minimum repairing width of transverse crack, then bottom slot driller, be drilled with along fractuer direction interval electric drill the multiple borings 3 being communicated with sliding layer, the diameter of boring 3 is 10cm, and boring 3 is at interval of 20cm arrangement, and the degree of depth of boring 3 is h/2.
(b) pregrouting: rinse slot driller and boring 3 with giant, the general contraction-free grouting concrete of boss's glue NS60 is added water to be mixed to evenly without caking (the general contraction-free grouting concrete of boss's glue NS60 is 25:4.4 with the mixed weight ratio of water), stir again after slaking, and be grouted in boring 3, arrive the half height of boring 3, then pressurize in boring 3 with pneumatic mortar machine, the slurries in boring are flowed in the space at sliding layer top around.
C () pricks muscle grouting: be first arranged in boring 3 by vertical reinforcing steel bar cage 2, pours into special contraction-free grouting concrete in boring 3; Then, horizontal reinforcement cage 1 is placed in slot driller, the end face level (lower than pavement-height 3cm) of its end face and vertical reinforcing steel bar cage, and after mutually overlapping, carry out watering, plugging and pounding with special contraction-free grouting concrete, make the road surface of newly building and the smooth connection of adjacent old pavement.Special contraction-free grouting concrete preparation method is as follows: boss's glue NS60 and rubble (diameter is 10-20mm) weight ratio are 7:3 ~ 6:4, and the weight ratio of water and boss's glue NS60 is 0.18 to be uniformly mixed.
The intensity of this special contraction-free grouting concrete is as follows:
The compressive strength 49MPa of 7d;
The compressive strength 62.1MPa of 28d;
The rupture strength 6.07MPa of 28d;
The amount of contraction 0.012mm of 3d.
Of the present invention vertically and level be not absolute, be say relative to road surface.The crack that the present invention is directed to oblique prestressing force cement concrete pavement gives concrete preparing structure and method, and method for repairing and mending is simple, and reliability is strong.
Although be below described embodiment of the present invention by reference to the accompanying drawings, the present invention is not limited to above-mentioned specific embodiments, and above-mentioned specific embodiments is only schematic, guiding, instead of restrictive.Those of ordinary skill in the art is under the enlightenment of this manual, and when not departing from the scope that the claims in the present invention are protected, can also make a variety of forms, these all belong to the row of the present invention's protection.
Claims (7)
1. the preparing structure of an oblique prestressing force cement concrete cracks, wherein, described oblique prestressing force cement concrete pavement comprises prestressed reinforcement and sliding layer, it is characterized in that, the top of described prestressed reinforcement is provided with the slot driller offered along crack, be interval with the multiple borings being communicated with described sliding layer along fractuer direction bottom slot driller, horizontal reinforcement cage is provided with in described slot driller, be provided with vertical reinforcing steel bar cage in described boring, described slot driller and the interior grouting of described boring have contraction-free grouting concrete.
2. the preparing structure of oblique prestressing force cement concrete cracks according to claim 1, it is characterized in that, the reinforcing steel bar cage of described horizontal reinforcement cage to be cross section be rectangle, comprises four horizontal tectonics reinforcing bars be arranged in parallel and along the spaced rectangle hoop in described horizontal tectonics reinforcing bar direction.
3. the preparing structure of oblique prestressing force cement concrete cracks according to claim 1, it is characterized in that, described vertical reinforcing steel bar cage is column reinforcing steel bar cage, the ring-shaped stirrup comprising at least three vertical distributing bars circumferentially axially arranged outside and arrange along described vertical distributing bar direction.
4. the preparing structure of oblique prestressing force cement concrete cracks according to claim 1, it is characterized in that, the end face of described vertical reinforcing steel bar cage and the end face of described horizontal reinforcement cage are in same level and lower than pavement-height, the end face of described vertical reinforcing steel bar cage and the end face of described horizontal reinforcement cage are interconnected.
5. a method for repairing and mending for oblique prestressing force cement concrete cracks, wherein, described oblique prestressing force cement concrete pavement comprises prestressed reinforcement and sliding layer, it is characterized in that, comprises the following steps:
(1) to crack boring: offering a width along crack is the slot driller of W, slot driller bottom surface is positioned at more than prestressed reinforcement, W is the minimum repairing width of transverse crack, bottom slot driller, be then drilled with the multiple borings being communicated with described sliding layer along fractuer direction interval;
(2) pregrouting: rinse slot driller and boring, contraction-free grouting concrete is added water and mixes to evenly without caking, stir again after slaking, and be grouted in boring, then with pneumatic mortar machine pressurization in boring, the slurries in boring are made to flow in the space at sliding layer top around;
(3) muscle grouting is pricked: be first arranged in boring by vertical reinforcing steel bar cage, in boring, pour into contraction-free grouting concrete; Then, horizontal reinforcement cage is placed in slot driller, the end face level of its end face and vertical reinforcing steel bar cage, and mutually after overlap joint, carries out watering, plugging and pounding with contraction-free grouting concrete, make the road surface of newly building and the smooth connection of adjacent old pavement.
6. the method for repairing and mending of oblique prestressing force cement concrete cracks according to claim 5, it is characterized in that, contraction-free grouting concrete in described step (2) is the general contraction-free grouting concrete of boss's glue NS60, and it is 25:4.4 with the mixed weight ratio of water.
7. the method for repairing and mending of oblique prestressing force cement concrete cracks according to claim 5, it is characterized in that, contraction-free grouting concrete in described step (3) is boss's glue NS60, diameter is the rubble of 10-20mm and the mixture of water, wherein the weight ratio of boss's glue NS60 and rubble is 7:3 ~ 6:4, and the weight ratio of water and boss's glue NS60 is 0.18.
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| CN201310115758.5A CN103194949B (en) | 2013-04-03 | 2013-04-03 | Structure and method for repairing cracks of oblique prestressed cement concrete pavement |
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| CN201310115758.5A CN103194949B (en) | 2013-04-03 | 2013-04-03 | Structure and method for repairing cracks of oblique prestressed cement concrete pavement |
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| CN103194949B true CN103194949B (en) | 2015-05-20 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032641A (en) * | 2014-01-10 | 2014-09-10 | 江苏鼎泰工程材料有限公司 | Method for prolonging service life of concrete pavement |
| CN104674627B (en) * | 2015-02-13 | 2016-08-17 | 南通大学 | A kind of seam construction method preventing old cement concrete road to add black top reflection crack |
| CN108797292A (en) * | 2017-04-26 | 2018-11-13 | 福建省第公路工程公司 | A kind of cement concrete cracks breakage raggle formula patching |
| CN107447616A (en) * | 2017-09-01 | 2017-12-08 | 西安汉河环保科技有限公司 | A kind of oblique prestressed concrete modularization construction process |
| CN108360352B (en) * | 2018-01-31 | 2021-01-22 | 杨波 | Horizontal prestress grouting repair method for road crack diseases |
| CN110453579B (en) * | 2019-09-09 | 2021-05-18 | 济南通达公路工程有限公司 | Super-curing seal construction method for cement concrete pavement |
| CN113106802A (en) * | 2021-04-19 | 2021-07-13 | 交通运输部公路科学研究所 | Method and equipment for rapidly recovering load transfer capacity of assembled concrete pavement slab |
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|---|---|---|---|---|
| JPH0288803A (en) * | 1988-09-22 | 1990-03-29 | P S Concrete Co Ltd | Jointing of precast concrete pavement slab to existing concrete pavement |
| EP0676505A2 (en) * | 1994-04-08 | 1995-10-11 | Director General Of Otaru Development And Construction Department Of Hokkaido Development Bureau. | Joint structure for coupling precast concrete pavement slabs |
| CN101775772A (en) * | 2010-02-01 | 2010-07-14 | 张东省 | Sloping tensioning method two-way prestressed concrete pavement construction method |
| CN202766943U (en) * | 2012-09-24 | 2013-03-06 | 河南万里路桥集团有限公司 | Filling and sealing structure for cement concrete pavement slit |
| CN203174459U (en) * | 2013-04-03 | 2013-09-04 | 西安公路研究院 | Crack repair structure for slantwise prestressed cement concrete pavement |
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2013
- 2013-04-03 CN CN201310115758.5A patent/CN103194949B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0288803A (en) * | 1988-09-22 | 1990-03-29 | P S Concrete Co Ltd | Jointing of precast concrete pavement slab to existing concrete pavement |
| EP0676505A2 (en) * | 1994-04-08 | 1995-10-11 | Director General Of Otaru Development And Construction Department Of Hokkaido Development Bureau. | Joint structure for coupling precast concrete pavement slabs |
| CN101775772A (en) * | 2010-02-01 | 2010-07-14 | 张东省 | Sloping tensioning method two-way prestressed concrete pavement construction method |
| CN202766943U (en) * | 2012-09-24 | 2013-03-06 | 河南万里路桥集团有限公司 | Filling and sealing structure for cement concrete pavement slit |
| CN203174459U (en) * | 2013-04-03 | 2013-09-04 | 西安公路研究院 | Crack repair structure for slantwise prestressed cement concrete pavement |
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