CN104328730B - The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement - Google Patents

The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement Download PDF

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Publication number
CN104328730B
CN104328730B CN201410500774.0A CN201410500774A CN104328730B CN 104328730 B CN104328730 B CN 104328730B CN 201410500774 A CN201410500774 A CN 201410500774A CN 104328730 B CN104328730 B CN 104328730B
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construction
cement concrete
concrete pavement
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former
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CN104328730A (en
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王新泉
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DEZHOU ROAD ENGINEERING CORPORATION
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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

Abstract

The present invention relates to the construction method of a kind of embedded reinforcement bitumen layer transformation cement concrete pavement, substrate injecting cement paste is arranged in former embankment lower horizontal direction, arrange the GSZ vertical reinforced body of more than at vertical direction, in GSZ vertical reinforced body, fill cellular concrete light soil; Above GSZ 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, be sequentially arranged from bottom to up in well formula link slot, on former cement concrete pavement lower supercrust, stress absorbing layer, on supercrust. The asphalt pavement material of rear laying and former concrete road surface have good switching performance, are effectively prevented the destruction of each structure sheaf on road surface, solve settlement after construction problem, extend the service life of highway.

Description

The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement
Technical field
The present invention relates to a kind of control subgrade settlement after reconstruction, structure that protection of pavement crack, the cooperative cement pavement reconstruction of the new road surface of coordination and old roadbed are bituminous paving and construction method, transform cement concrete pavement structure and construction method particularly to a kind of embedded reinforcement bitumen layer.
Background technology
But the continuous growth along with China's economy, the demand of road is also increased therewith, since the nineties in last century, cement pavement is because its long service life, maintenance cost are low and have stronger resistance to compression, bending resistance is drawn and the advantages such as wear-resistant mechanical characteristic, it is widely used, and alleviates the realistic problem of current China cement production capacity surplus. But, along with road pavement ride comfort, the increase using quality and feature of environmental protection demand, cement pavement has spilt some essence defects cruelly, as: driving produces significant shock and noise, road table is easily generated crack, poor flatness, occurs that crack, pit-hole are difficult to maintenance, the dust removal ability that absorbs heat is poor, optical power is easily generated by force visual fatigue etc. For solving an above-mentioned difficult problem, bituminous paving starts progressively to recover to make to be replaced with original cement pavement, is referred to as " changing black in vain ". After adopting bituminous paving to replace original cement pavement, have the advantage that 1) enhance the comfort level of traveling and the use quality 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 is greatly improved processing braking ability in emergency, and vehicle travels safer, more steadily; 5) asphalt pavement maintenance is easy, unlike cement pavement, needs the defects liability period of 15 ~ 30 days after maintenance, it is possible to accomplish that decking and rolling can be open to traffic use.Therefore, road " changing black in vain " has become a kind of trend of China's road construction development.
In " changing black in vain " improvement project, the problem often relating to roadbed settlement Control after reconstruction, protection of pavement crack and new road surface and old roadbed cooperation two aspect. Traditional " changing black in vain " improvement project, frequently with following scheme: 1) directly on cement pavement Laying Asphalt Surface Course, 2) complete or part removes cement pavement and re-lays bituminous paving. But such scheme also exists following problem: the contact force weakness of the appearance of reflection cracking in a pavement, new road surface and old roadbed cannot be stoped, the problem of subgrade settlement sedimentation after reconstructing cannot be solved.
Therefore, need badly seek a kind of effective control reconstruction after post-construction settlement of subgrade, prevent and treat pavement crack, strengthen new road surface and the pavement structure of the collaborative work ability of old roadbed and construction method seem particularly significant.
Summary of the invention
The purpose of the present invention overcomes drawbacks described above exactly, thering is provided a kind of embedded reinforcement bitumen layer transformation cement concrete pavement structure, can effectively prevent and treat sedimentation, the homogeneous state of stress is distributed, strengthen pavement structure bulk strength, it is prevented that the old and new's combining road layer differential settlement and cause crackle.
It is a further object to provide the construction method of a kind of embedded reinforcement bitumen layer transformation cement concrete pavement.
It is an object of the invention 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 GSZ vertical reinforced body of more than at vertical direction, in GSZ vertical reinforced body, fill cellular concrete light soil; Above GSZ 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, be sequentially arranged from bottom to up in well formula link slot, on former cement concrete pavement lower supercrust, stress absorbing layer, on supercrust.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, it is characterised in that arrange monoblock type reinforcing body between former cement concrete pavement and lower supercrust.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, it is characterised in that upper supercrust divides two-layer to lay, 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, monoblock type reinforcing body adopts fiberglass grid, and occluding body is precast concrete block.
Aforesaid embedded reinforcement bitumen layer transformation cement concrete pavement structure, it is characterised in that arrange top layer mud jacking body on former cement concrete pavement.
The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement, comprises the following steps:
(1) former cement concrete pavement processes: after being removed by the damaged part of former cement concrete pavement, and the region of local badly broken is carried out Dispose by grouting formation top layer mud jacking body, and fracture place carries out slip casting filleting, and vertical hole number is more than one;
(2) cutting well formula link slot: cut out evenly spaced well formula link slot in length and breadth on former cement concrete pavement;
(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 high-pressure rotary jet grouting pile equipment Soft Soil Layer bottom vertical Kong Xiangyuan embankment to form substrate injecting cement paste;
(5) lightweight concrete recharges body construction: vertically drawing in hole placement GSZ vertical reinforced body, and irrigates bubble concrete light soil and form lightweight concrete and recharge body;
(6) occluding body construction: in the location arrangements occluding body of former roadbed side slope both sides respective panels rising pouring slurry and fix, 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, lightweight concrete recharges the top churning of body and forms plate rising pouring slurry;
(8) monoblock type reinforcing body construction: arranging monoblock type reinforcing body in well formula link slot and on former cement concrete pavement, and fix, monoblock type 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) upper supercrust construction: laying supercrust, upper supercrust construction in layer on stress absorbing layer, lay 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, remaining road surface gap is carried out fluting slip casting joint filling, the conventional stickup Anticracking plaster of ratio, can the more effective reflection crack preventing road surface.
2, in well formula link slot and former cement concrete pavement place monoblock type reinforcement material, strengthen tension and the non-deformability of road surface structare layer, improve the ability of the resisting fatigue 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 be distributed, enhance pavement structure bulk strength.
3, laying asphalt pavement structural layer (lower supercrust) on monoblock type reinforcement material, 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, due to the post-construction settlement that road surface overlays and traffic loading increase causes, enhancing overall serviceability and the bearing 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, existing roadbed is had reinforcing effect by the infiltration of serosity, 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 embedded reinforcement bitumen layer transformation cement concrete pavement structure cross-sectional view of the present invention;
Fig. 2 is that lightweight concrete recharges body structural representation;
Fig. 3 is well formula link slot planar 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-GSZ vertical reinforced body; 7-lightweight concrete recharges body; 8-occluding body; 9-spike; 10-plate rising pouring slurry; 11-monoblock type 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 technology requirement 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 lightweight concrete recharge in the present embodiment such as body construction, occluding body construction, the construction of plate rising pouring slurry, monoblock type reinforcing body, the construction of lower supercrust, stress absorbing layer construction, the construction of upper supercrust, 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 embedded reinforcement bitumen layer transformation cement concrete pavement structure cross-sectional view of the present invention, and Fig. 2 is that lightweight concrete recharges body structural representation, and Fig. 3 is well formula link slot planar structure schematic diagram.
With reference to Fig. 1, Fig. 2, shown in Fig. 3, embedded reinforcement bitumen layer transformation cement concrete pavement structure, mainly include former embankment 16, after punching, it is fed into the Soft Soil Layer 17 bottom former embankment 16 forms substrate injecting cement paste 5, it is arranged in the GSZ vertical reinforced body 6 in former embankment 16, backfill lightweight concrete in GSZ vertical reinforced body 6 recharges body 7, it is poured in former cement concrete pavement 1 plate rising pouring slurry 10 below, the closure occluding body 8 at plate rising pouring slurry 10 two ends, it is laid on the lower supercrust 12 above former cement concrete pavement 1 successively, stress absorbing layer 13, upper supercrust 14. laying monoblock type reinforcing body 11 between former cement concrete pavement 1 and lower supercrust 12,14 points of multilamellars of upper supercrust are successively laid, and lay geosynthetics 15 between adjacent layer.
Work progress is: first, former cement concrete pavement 1 is cleared up, the region that local damage on former cement concrete pavement 1 is serious is carried out mud jacking and forms top layer mud jacking body 2, it is cut into 80mm deep at crack place cutting machine, crack slip casting groove 3 wide for 50mm, use pneumatic pick dabbing, the artificial shiny surface hacking that grooving machine is cut through, then with the compression mixed earth chip of air scavenging, 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 sized larger than lateral dimension along embankment longitudinal cross-section, and longitudinal cross-section size Control is at long 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, hole is vertically drawn bottom artesian well formula link slot 4, and adopt high-pressure rotary jet grouting pile equipment to draw hole Soft Soil Layer 17 churning formation substrate injecting cement paste 5 bottom roadbed by this, drawing, GSZ vertical reinforced body 6 is set in hole, GSZ vertical reinforced body 6 selects steel wire grid, specification selects FHGS150-150, mesh size is 50 �� 50mm, then recharges cellular concrete light soil in GSZ vertical reinforced body 6, forms lightweight concrete 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 with former cement concrete pavement 1 and former embankment 16 junction spike 9 in occluding body 8. 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, lightweight concrete recharge body 7 top high-voltage churning formed. Before plate rising pouring slurry 10 does not solidify completely, well formula link slot 4 reserves fixing hole.
Monoblock type 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 monoblock type reinforcing body 11 with U-shaped nail bottom well formula link slot 4.
Lower supercrust 12 is thick formula bituminous concrete in adopting, it is laid in well formula link slot 4 and exceedes more than former cement concrete pavement, can highly adjust the designed elevation of reconstruction roadbed by adjusting the laying of lower supercrust 12, the correlation step such as pave is not detailed with specification herein. Laying stress absorbing layer 13 on lower supercrust 12, stress absorbing layer 13 adopts SBS modified pitch.
Upper supercrust 14 adopts particulate formula bituminous concrete, and THICKNESS CONTROL is between 4��6cm, and 14 points of two-layers of upper supercrust are laid, and arranges geosynthetics 15 between two-layer, and geosynthetics 15 adopts the material such as geotextiles, GSZ.

Claims (5)

1. the construction method of embedded reinforcement bitumen layer transformation cement concrete pavement, it is characterised in that comprise the following steps:
(1) former cement concrete pavement processes: after being removed by the damaged part of former cement concrete pavement, and the region of local badly broken is carried out Dispose by grouting formation top layer mud jacking body, and fracture place carries out slip casting filleting;
(2) cutting well formula link slot: cut out evenly spaced well formula link slot in length and breadth on former cement concrete pavement;
(3) well formula link slot inner hole: draw vertical hole bottom former embankment bottom artesian well formula link slot;
(4) substrate injecting cement paste: adopt churning in high-pressure rotary jet grouting pile equipment Soft Soil Layer bottom vertical Kong Xiangyuan embankment to form substrate injecting cement paste;
(5) lightweight concrete recharges body construction: vertically drawing in hole placement GSZ vertical reinforced body, and irrigates bubble concrete light soil and form lightweight concrete and recharge body;
(6) occluding body construction: in the location arrangements occluding body of former roadbed both sides side slope respective panels rising pouring slurry and fix;
(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, lightweight concrete recharges the top churning of body and forms plate rising pouring slurry;
(8) monoblock type reinforcing body construction: arrange monoblock type reinforcing body in well formula link slot and on former cement concrete pavement, and fix;
(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) upper supercrust construction: lay supercrust, upper supercrust construction in layer on stress absorbing layer, lay geosynthetics between adjacent layer.
2. the construction method of embedded reinforcement bitumen layer according to claim 1 transformation cement concrete pavement, it is characterised in that be more than one in the vertical hole number drawn bottom well formula link slot.
3. the construction method of embedded reinforcement bitumen layer according to claim 1 transformation cement concrete pavement, it is characterised in that 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.
4. the construction method of embedded reinforcement bitumen layer according to claim 1 transformation cement concrete pavement, it is characterised in that geosynthetics is geotextiles, and monoblock type reinforcing body adopts fiberglass grid, and occluding body is precast concrete block.
5. the construction method of embedded reinforcement bitumen layer according to claim 1 transformation cement concrete pavement, it is characterised in that upper supercrust THICKNESS CONTROL is 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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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
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

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Inventor after: Wang Zhongdong

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