CN104328730A - Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer - Google Patents

Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer Download PDF

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Publication number
CN104328730A
CN104328730A CN201410500774.0A CN201410500774A CN104328730A CN 104328730 A CN104328730 A CN 104328730A CN 201410500774 A CN201410500774 A CN 201410500774A CN 104328730 A CN104328730 A CN 104328730A
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layer
cement concrete
concrete pavement
construction
pavement
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CN201410500774.0A
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CN104328730B (en
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王新泉
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Deda Transportation Construction And Development Group Co ltd
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Hangzhou Jiangrun Technology Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C21/00Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/185Isolating, separating or connecting intermediate layers, e.g. adhesive layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/36Coherent pavings made in situ by subjecting soil to stabilisation

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to a construction method for transforming cement concrete pavement with an embedded reinforced asphalt layer. A basal grouting is arranged in the horizontal direction under an original embankment. More than one geogrid vertical reinforcements are arranged in the vertical direction and are filled with foam concrete light-weight soil. A plate-bottom grouting is arranged above the geogrid vertical reinforcements and under the original cement concrete pavement. Blocking bodies are arranged respectively at the two ends of the plate-bottom grouting and are fixed onto side walls of the original embankment. A well-type connective trough is arranged in the original cement concrete pavement. A lower pavement layer, a stress absorption layer and an upper pavement layer are arranged in the well-type connective trough and on the original cement concrete pavement from bottom to top successively. A later paved asphalt pavement material and the original cement concrete pavement have an excellent connecting performance so that destroy in each structure layer in the pavement can be effectively prevented. The construction method can solve a problem of post-construction settlement and prolongs a service life of a road.

Description

The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement
Technical field
The present invention relates to and a kind ofly control to reconstruct rear subgrade settlement, protection of pavement crack, the new road surface of coordination and the cooperative cement pavement of old roadbed and reconstruct structure for flexible pavement and construction method, the particularly embedded reinforcement bitumen layer transformation cement concrete pavement structure of one and construction method.
Background technology
But along with the continuous growth of China's economy, the demand of road is also increased thereupon, since the nineties in last century, cement pavement because of its long service life, maintenance cost is low and have stronger resistance to compression, bending resistance draws and the advantages such as wear-resistant mechanical characteristic, be used widely, and alleviate the realistic problem of current China cement production capacity surplus.But, along with the increase of road pavement ride comfort, using character and feature of environmental protection demand, cement pavement has spilt some essential defects cruelly, as: driving produces comparatively big bang and noise, Lu Biaoyi produces crack, poor flatness, occurs crack, hole, hole is difficult to maintenance, poor, the optical power of heat absorption dust removal ability easy generation visual fatigue etc. by force.For solving an above-mentioned difficult problem, flexible pavement starts progressively to recover to use to substitute original cement pavement, is referred to as " changing black in vain ".After employing flexible pavement replaces original cement pavement, tool has the following advantages: 1) enhance the comfort level of traveling and the using character on road surface; 2) noise produced in vehicle travel process is reduced; 3) increase the airborne dust ability in absorption vehicle travel process, improve the air quality of road both sides; 4) relative to original cement concrete pavement, change in vain black after pavement of road and tire between Adhesion enhancement, vehicle process emergency in braking ability greatly improve, vehicle travel get up safer, more steadily; 5) asphalt pavement maintenance is easy, unlike cement pavement, needs the defects liability period of 15 ~ 30 days after maintenance, can accomplish that decking and rolling can be open to traffic use.Therefore, road " changes black " has in vain become a kind of trend of China's road construction development.
In " changing black in vain " improvement project, often relate to the problem of roadbed settlement Control after reconstruction, protection of pavement crack and new road surface and old roadbed co-operation two aspect.Traditional " changing black in vain " improvement project, normal adopts following scheme: 1) direct Laying Asphalt Surface Course, 2 on cement pavement) complete or part removes cement pavement and re-lays flexible pavement.But such scheme also exists following problem: the problem that the contact force of the appearance of reflection cracking in a pavement, newly road surface and old roadbed is weak, cannot solve subgrade settlement sedimentation after reconstructing cannot be stoped.
Therefore, need badly seek a kind of effective control reconstruction after post-construction settlement of subgrade, prevent and treat pavement crack, strengthen the road structure of the collaborative work ability of new road surface and old roadbed and construction method seems very important.
Summary of the invention
Object of the present invention overcomes above-mentioned defect exactly, there is provided a kind of embedded reinforcement bitumen layer transformation cement concrete pavement structure, effectively can prevent and treat sedimentation, the homogeneous state of stress distributes, strengthen road structure bulk strength, prevent the old and new's combining road layer differential settlement and cause crackle.
Another object of the present invention is to provide a kind of construction method of embedded reinforcement bitumen layer transformation cement concrete pavement.
The object of the invention is to be achieved through the following technical solutions:
A kind of embedded reinforcement bitumen layer transformation cement concrete pavement structure, substrate injecting cement paste is arranged in former embankment lower horizontal direction, arrange the geo-grid vertical reinforced body of more than at vertical direction, in geo-grid vertical reinforced body, fill cellular concrete light soil; Above geo-grid vertical reinforced body, former cement concrete pavement arranged beneath plate rising pouring slurry, occluding body is arranged at the two ends of plate rising pouring slurry, and occluding body is fixed on the sidewall of former embankment; In former cement concrete pavement, arrange well formula link slot, in well formula link slot, on former cement concrete pavement from bottom to up successively arrange under supercrust, stress absorbing layer, on supercrust.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, is characterized in that arranging monolithic reinforcing body between former cement concrete pavement and lower supercrust.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, is characterized in that supercrust divides two-layer laying, arranges geosynthetics between two-layer.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, it is characterized in that lower supercrust be in thick formula asphalt concrete layer, stress absorbing layer is SBS modified asphalt layer, geosynthetics is geotextiles, monolithic reinforcing body adopts fiberglass grid, and occluding body is precast concrete block.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, is characterized in that former cement concrete pavement being arranged top layer mud jacking body.
The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement, comprises the following steps:
(1) former cement concrete pavement process: after the damaged part of former cement concrete pavement is removed, carry out Dispose by grouting to the region of local badly broken and form top layer mud jacking body, fracture place carries out slip casting filleting, and vertical hole number is more than one;
(2) well formula link slot is cut: on former cement concrete pavement, cut out evenly spaced well formula link slot in length and breadth;
(3) well formula link slot inner hole: bottom artesian well formula link slot bottom former embankment, draw vertical hole;
(4) substrate injecting cement paste: adopt churning in the Soft Soil Layer of high-pressure rotary jet grouting pile equipment bottom vertical Kong Xiangyuan embankment to form substrate injecting cement paste;
(5) light weight concrete construction recharges body construction: place geo-grid vertical reinforced body vertically drawing in hole, and pours into bubble concrete light soil and form light weight concrete construction and recharge body;
(6) occluding body construction: also fixing in the location arrangements occluding body of former roadbed side slope both sides respective panels rising pouring slurry, occluding body is precast concrete block;
(7) plate rising pouring slurry: by high-pressure rotary jet grouting pile equipment by bottom the vertical Kong Yuan cement concrete pavement bottom well formula link slot, the light weight concrete construction top churning of recharging body forms plate rising pouring slurry;
(8) monolithic reinforcing body construction: arrange monolithic reinforcing body in well formula link slot and on former cement concrete pavement, and fixing, and monolithic reinforcing body adopts fiberglass grid;
(9) supercrust construction under: supercrust is set in well formula link slot and former cement concrete pavement upper berth;
(10) stress absorbing layer construction: lay stress absorbing layer on lower supercrust;
(11) to set out on a journey surface construction: stress absorbing layer lays surface layer of setting out on a journey, and upper supercrust construction in layer, lays geosynthetics between adjacent layer, lower supercrust is thick formula asphalt concrete layer in being; Upper supercrust is particulate formula asphalt concrete layer, and THICKNESS CONTROL is between 4 ~ 6cm; Stress absorbing layer is SBS modified asphalt layer.
the present invention has following feature and beneficial effect:
1, fluting slip casting joint filling is carried out to the road surface gap of remnants, than stickup Anticracking plaster in the past, can the more effective reflection crack preventing road surface.
2, in well formula link slot and former cement concrete pavement holding integrated formula reinforcement material, strengthen tension and the non-deformability of road surface structare layer, improve the ability of the antifatigue cracking of road surface structare layer, high temperature resistant rut and anti-low-temperature shrink cracking simultaneously.Effectively preventing the old and new joint portion differential settlement and cause crackle, and suppress sedimentation, the homogeneous state of stress distributes, and enhances road structure bulk strength.
3, on monolithic reinforcement material, lay asphalt pavement structural layer (lower supercrust), conjugation is high, increases the frictional resistance between road surface structare layer, further enhances resistance to deformation and the resistance to tension on road surface.
4, the setting of substrate injecting cement paste can effectively prevent from, because road surface overlay and traffic loading increase the post-construction settlement caused, enhancing overall functional performance and the supporting capacity of highway.
5, bottom well formula link slot, hole is vertically drawn to substrate, and backfill with light material, while there is good load transmission effects, the infiltration of slurries has reinforcing effect to existing roadbed, part road surface load can be offset simultaneously, enhance the integrated carrying performance of highway, extend the service life of highway.
Accompanying drawing explanation
Fig. 1 is the present invention's embedded reinforcement bitumen layer transformation cement concrete pavement structure cross-sectional drawing;
Fig. 2 is that light weight concrete construction recharges body structure schematic diagram;
Fig. 3 is well formula link slot plane structure schematic diagram;
In figure: the former cement concrete pavement of 1-; 2-top layer mud jacking body; 3-crack slip casting groove; 4-well formula link slot; 5-substrate injecting cement paste; 6-geo-grid vertical reinforced body; 7-light weight concrete construction recharges body; 8-occluding body; 9-spike; 10-plate rising pouring slurry; 11-monolithic reinforcing body; Supercrust under 12-; 13-stress absorbing layer; The upper supercrust of 14-; 15-geosynthetics; The former embankment of 16-; 17-Soft Soil Layer.
Detailed description of the invention
The technical requirements of the cleaning of present embodiment Central Plains cement concrete pavement, cutting well formula link slot, well formula link slot inner hole, substrate slip casting, body light weight concrete construction recharge in the present embodiment such as body construction, occluding body construction, the construction of plate rising pouring slurry, monolithic reinforcing body, the construction of lower supercrust, stress absorbing layer construction, surface construction of setting out on a journey, successive projects construction requirement and are not repeated, and emphasis sets forth the embodiment that the present invention relates to structure.
Fig. 1 is the present invention's embedded reinforcement bitumen layer transformation cement concrete pavement structure cross-sectional drawing, and Fig. 2 is that light weight concrete construction recharges body structure schematic diagram, and Fig. 3 is well formula link slot plane structure schematic diagram.
With reference to Fig. 1, Fig. 2, shown in Fig. 3, embedded reinforcement bitumen layer transformation cement concrete pavement structure, mainly comprise former embankment 16, after punching, the Soft Soil Layer 17 be fed into bottom former embankment 16 forms substrate injecting cement paste 5, be arranged in the geo-grid vertical reinforced body 6 in former embankment 16, the light weight concrete construction of backfill in geo-grid vertical reinforced body 6 recharges body 7, be poured in the plate rising pouring slurry 10 below former cement concrete pavement 1, shutoff is in the occluding body 8 at plate rising pouring slurry 10 two ends, be laid on the lower supercrust 12 above former cement concrete pavement 1 successively, stress absorbing layer 13, upper supercrust 14.Lay monolithic reinforcing body 11 between former cement concrete pavement 1 and lower supercrust 12, upper supercrust 14 points of multilayers are successively laid, and lay geosynthetics 15 between adjacent layer.
Work progress is: first, former cement concrete pavement 1 is cleared up, the region serious to local damage on former cement concrete pavement 1 is carried out mud jacking and is formed top layer mud jacking body 2, be cut into 80mm at crack place cutting machine dark, the crack slip casting groove 3 that 50mm is wide, uses pneumatic pick dabbing, the artificial shiny surface hacking that joint cutter is cut through, then blow down mixed earth chip with compressed air, injection HGM100 ungauged regions epoxy grouting material crack slip casting groove 3 in, and vibrate, compacting, floating.
Well formula link slot 4 cuts out with cutting machine on former cement concrete pavement 1, and well formula link slot is greater than lateral dimension along embankment longitudinal cross-section size, and longitudinal cross-section size Control is growing 40 ~ 50cm, between interval width 80 ~ 120cm; Lateral cross-sectional dimension controls at long 30 ~ 40cm, between interval width 70 ~ 100cm.Bottom former embankment 16, vertically hole is drawn bottom artesian well formula link slot 4, and adopt high-pressure rotary jet grouting pile equipment to draw the Soft Soil Layer 17 churning formation substrate injecting cement paste 5 of hole bottom roadbed by this, geo-grid vertical reinforced body 6 is set drawing in hole, geo-grid vertical reinforced body 6 selects steel wire grid, specification selects FHGS150-150, mesh size is 50 × 50mm, then recharges cellular concrete light soil in geo-grid vertical reinforced body 6, forms light weight concrete construction and recharges body 7.
Occluding body 8 adopts the precast concrete block of label C30, is placed in the interior two ends for plugging plate rising pouring slurry 10 of groove that roadbed side slope two side roof part excavates in advance, is fixed in occluding body 8 and former cement concrete pavement 1 and former embankment 16 junction spike 9.Plate rising pouring slurry 10 is after occluding body 8 has been constructed, by high-pressure rotary-spray equipment through well formula link slot 4 draw bottom Kong Yuan cement concrete pavement 1, light weight concrete construction recharge the churning of body 7 top high-voltage formed.Before plate rising pouring slurry 10 does not solidify completely, well formula link slot 4 reserves fixing hole.
Monolithic reinforcing body 11 is laid in well formula link slot 4 and the surface of former cement concrete pavement 1, and is fixed in reserved fixing hole by monolithic reinforcing body 11 with U-shaped nail bottom well formula link slot 4.
Thick formula bituminous concrete during lower supercrust 12 adopts, to be laid in well formula link slot 4 and to exceed more than former cement concrete pavement, laying by adjusting lower supercrust 12 highly adjusts the design elevation of reconstruction roadbed, and the correlation step such as to pave and specification do not describe in detail herein.Lower supercrust 12 lays stress absorbing layer 13, and stress absorbing layer 13 adopts SBS modified bitumen.
Upper supercrust 14 adopts particulate formula bituminous concrete, and THICKNESS CONTROL is between 4 ~ 6cm, and the 14 points of two-layer layings of upper supercrust, arrange geosynthetics 15 between two-layer, geosynthetics 15 adopts the material such as geotextiles, geo-grid.

Claims (5)

1. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement, is characterized in that comprising the following steps:
(1) former cement concrete pavement process: after the damaged part of former cement concrete pavement is removed, carry out Dispose by grouting to the region of local badly broken and form top layer mud jacking body, fracture place carries out slip casting filleting;
(2) well formula link slot is cut: on former cement concrete pavement, cut out evenly spaced well formula link slot in length and breadth;
(3) well formula link slot inner hole: draw vertical hole bottom artesian well formula link slot bottom former embankment;
(4) substrate injecting cement paste: adopt churning in the Soft Soil Layer of high-pressure rotary jet grouting pile equipment bottom vertical Kong Xiangyuan embankment to form substrate injecting cement paste;
(5) light weight concrete construction recharges body construction: place geo-grid vertical reinforced body vertically drawing in hole, and pours into bubble concrete light soil and form light weight concrete construction and recharge body;
(6) occluding body construction: also fixing in the location arrangements occluding body of former roadbed side slope both sides respective panels rising pouring slurry;
(7) plate rising pouring slurry: by high-pressure rotary jet grouting pile equipment by bottom the vertical Kong Yuan cement concrete pavement bottom well formula link slot, the light weight concrete construction top churning of recharging body forms plate rising pouring slurry;
(8) monolithic reinforcing body construction: arrange monolithic reinforcing body in well formula link slot and on former cement concrete pavement, and fixing;
(9) supercrust construction under: supercrust is set in well formula link slot and former cement concrete pavement upper berth;
(10) stress absorbing layer construction: lay stress absorbing layer on lower supercrust;
(11) to set out on a journey surface construction: stress absorbing layer lays surface layer of setting out on a journey, and upper supercrust construction in layer, lays geosynthetics between adjacent layer.
2. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement according to claim 1, is characterized in that the vertical hole number drawing bottom well formula link slot is more than one.
3. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement according to claim 1, it is characterized in that lower supercrust be in thick formula asphalt concrete layer; Upper supercrust is particulate formula asphalt concrete layer, and THICKNESS CONTROL is between 4 ~ 6cm; Stress absorbing layer is SBS modified asphalt layer.
4. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement according to claim 1, it is characterized in that geosynthetics is geotextiles, monolithic reinforcing body adopts fiberglass grid, and occluding body is precast concrete block.
5. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement according to claim 1, the surface thickness that it is characterized in that setting out on a journey controls between 4 ~ 6cm.
CN201410500774.0A 2014-09-26 2014-09-26 The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement Active CN104328730B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105133598A (en) * 2015-08-26 2015-12-09 水利部交通运输部国家能源局南京水利科学研究院 Cement mixing pile structure reinforced through geosynthetic materials and construction method thereof
CN105569159A (en) * 2015-12-14 2016-05-11 路金铭 Water seepage structure and method
CN107165017A (en) * 2017-07-24 2017-09-15 上海市市政规划设计研究院 The permanent composite pavement structure transformed for old asphalt pavement
CN110029549A (en) * 2019-03-22 2019-07-19 安徽省交通规划设计研究总院股份有限公司 A kind of rock-filling embankment comes to nothing the Treatment Methods of cracking
CN111335098A (en) * 2020-03-16 2020-06-26 章丘市金通路桥有限公司 Cement concrete pavement reformed by embedded reinforced asphalt layer and construction method thereof
CN111402701A (en) * 2020-03-26 2020-07-10 中铁二院工程集团有限责任公司 Equal-load replacement light roadbed bearing detection simulation device and implementation method
CN115506195A (en) * 2022-09-29 2022-12-23 黑龙江达融建筑工程技术咨询有限公司 Rigid-elastic composite board, preparation method thereof and method for preventing and treating reflection cracks

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CN101691736A (en) * 2009-09-23 2010-04-07 中交二公局第六工程有限公司 Construction method for reconstructing old concrete pavement by paving asphalt-concrete surface layer
CN101994284A (en) * 2009-08-27 2011-03-30 王可权 Method for repairing broken asphalt pavement
CN102535299A (en) * 2010-12-31 2012-07-04 安通建设有限公司 Construction method of stress absorbing layer for road repairing
CN202849895U (en) * 2012-09-05 2013-04-03 华中科技大学 Structure for repairing urban asphalt pavements
CN104060513A (en) * 2014-06-27 2014-09-24 南京同安道路工程有限公司 Modified asphalt graded broken stone stress absorption waterproof layer and manufacturing method thereof

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JP2005090183A (en) * 2003-09-19 2005-04-07 Sanwa Kako Co Ltd Construction method for asphalt pavement
CN101994284A (en) * 2009-08-27 2011-03-30 王可权 Method for repairing broken asphalt pavement
CN101691736A (en) * 2009-09-23 2010-04-07 中交二公局第六工程有限公司 Construction method for reconstructing old concrete pavement by paving asphalt-concrete surface layer
CN102535299A (en) * 2010-12-31 2012-07-04 安通建设有限公司 Construction method of stress absorbing layer for road repairing
CN202849895U (en) * 2012-09-05 2013-04-03 华中科技大学 Structure for repairing urban asphalt pavements
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105133598A (en) * 2015-08-26 2015-12-09 水利部交通运输部国家能源局南京水利科学研究院 Cement mixing pile structure reinforced through geosynthetic materials and construction method thereof
CN105569159A (en) * 2015-12-14 2016-05-11 路金铭 Water seepage structure and method
CN107165017A (en) * 2017-07-24 2017-09-15 上海市市政规划设计研究院 The permanent composite pavement structure transformed for old asphalt pavement
CN110029549A (en) * 2019-03-22 2019-07-19 安徽省交通规划设计研究总院股份有限公司 A kind of rock-filling embankment comes to nothing the Treatment Methods of cracking
CN110029549B (en) * 2019-03-22 2021-07-13 安徽省交通规划设计研究总院股份有限公司 Treatment method for rockfill subgrade void cracking
CN111335098A (en) * 2020-03-16 2020-06-26 章丘市金通路桥有限公司 Cement concrete pavement reformed by embedded reinforced asphalt layer and construction method thereof
CN111402701A (en) * 2020-03-26 2020-07-10 中铁二院工程集团有限责任公司 Equal-load replacement light roadbed bearing detection simulation device and implementation method
CN115506195A (en) * 2022-09-29 2022-12-23 黑龙江达融建筑工程技术咨询有限公司 Rigid-elastic composite board, preparation method thereof and method for preventing and treating reflection cracks

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