CN105839489A - New and used pavement splicing structure and construction method for ultrahigh section in highway extension project - Google Patents
New and used pavement splicing structure and construction method for ultrahigh section in highway extension project Download PDFInfo
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- CN105839489A CN105839489A CN201610330962.2A CN201610330962A CN105839489A CN 105839489 A CN105839489 A CN 105839489A CN 201610330962 A CN201610330962 A CN 201610330962A CN 105839489 A CN105839489 A CN 105839489A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
Abstract
The invention discloses a new and used pavement splicing structure and a construction method for an ultrahigh section in a highway extension project, and aims to solve the problem that an asphalt pavement structure layer is damaged because of impeded drainage of a new and used pavement spliced part of an ultrahigh section in a highway extension project. According to a scheme I, a longitudinal macadam sewer is formed in a spliced part of a new and used asphalt concrete pavement of the ultrahigh section; according to a scheme II, a waterproof sealing layer is arranged between a spliced widening structure layer and a base layer contacting an asphalt concrete surface layer; according to a scheme III, a spliced widening side surface is coated with a layer of hot asphalt. Due to adoption of the waterproof sealing layer, water of the asphalt pavement structure layer of a spliced widening section can be prevented from penetrating into the base layer longitudinally; as a side surface of a used widened part is coated with the hot asphalt, water of the asphalt pavement structure layer of the spliced widening section can be prevented from penetrating into a structure layer transversely; due to adoption of the longitudinal macadam sewer, longitudinal and transverse accumulated water of a spliced asphalt pavement structure layer can be collected. Therefore, the problem of water damage on spliced parts of a new pavement and an old pavement of the ultrahigh section in the highway extension project can be effectively solved.
Description
Technical field
This invention relates to the technology neck of Widening of Freeway engineering new-old pavement splicing position water-induced distress preventing and treating
Territory, a kind of comprehensive solution party processing freeboard section new-old pavement splicing position water-induced distress problem
Case.
Background technology
During highway reconstruction, for the treatment measures comparative maturity at new-old concrete bond splicing position,
But a set of comprehensive control measures is not also had for the water-induced distress preventing and treating of splicing position.
Spell the material of wide position new-old pavement due to characteristic and the difference of index, it is easy to form straight joint.This
A little straight joints are the important channel that road table water enters road surface structare layer, in non-superelevation section, typically pass through
Curb end is arranged draining sewer and longitudinal joint infiltration and the road surface infiltration at splicing position is arranged by crown slope
Go out outside pavement structure, but at superelevation high side paragraph, owing to arranging reverse road camber, road surface structare layer
Water can not be discharged outside pavement structure, but directly comes together in the position of new-old pavement splicing, and the time one is long, just
The damage of new-old pavement splicing position pavement structure can be caused, then view picture road surface will be caused through after a while
The damage of structure, thus cause huge economic loss.At present, common waterproof to splicing position both at home and abroad
Treatment measures mainly have following several:
1, draining sewer is set at roadbed end face
Longitudinal rubble french drain is set below the overlapping the slot widening newly-built road roadbed end face, is spaced a spacing
From arranging horizontal rubble french drain, new, old pavement structure sheaf overlap joint straight joint is made to seep water by vertically and horizontally rubble french drain
Discharge.
The shortcoming of this measure is, express highway pavement splicing position the most all carries out digging step and processes, basic unit
Being typically all waterproof basic unit, therefore the infiltration of Pavement mosaic longitudinal joint and the internal infiltration of road surface structare layer are extremely difficult to
Roadbed end face, therefore the water within road surface structare layer can not draining smoothly, thus collect in superelevation height dypass
The splicing position of face structure, accelerates the destruction of splicing position road surface structare layer.
2. dense bitumen compound is set
Prevent from oozing under the table water of road by arranging the surface layer of dense bitumen compound in superelevation high side.
The shortcoming one of this measure is to arrange dense bitumen compound to stop oozing of surface layer splicing longitudinal joint water
Enter；Two be intensive asphalt of joining also be relative closely knit of grating, the water on road surface still can pass through surface layer
Bituminous concrete penetrates into inside road surface structare layer, thus still has substantial amounts of charge for remittance and collect in superelevation high side
The splicing position of pavement structure, accelerates the destruction of splicing position road surface structare layer.
3. draining sealing is set
By arranging draining sealing on the structure sheaf at new-old pavement splicing position, prevent road surface from seeping water
And splicing longitudinal joint infiltration destroys road surface structare layer.Although this measure can guarantee that Lu Biao and splicing seams penetrate into
Road surface structare layer, but can not be by infiltration from the internal discharge of road surface structare layer, pavement structure stitching section bit length phase
Hydrops also can aggravate the generation of the disease of pavement structure, eventually results in the destruction of pavement structure.
In consideration of it, in order to discharge enlarging Highway Super-elevation high side road surface structare layer splicing position smoothly
Hydrops, extends the service life of enlarging express highway pavement, reduces enlarging and has built at a high speed supporting of rear road surface
Protect cost, need invention one at present badly and can prevent Highway Super-elevation high side road surface structare layer splicing position water from damaging
The Comprehensive Treatment measure destroyed.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of freeboard section road surface of administering to prevent highway
The Comprehensive Treatment measure of superelevation high side road surface structare layer splicing position water-induced distress, is used for solving enlarging the most public
The problem of the pavement destruction that superelevation high side pavement structure splicing position, road impeded drainage causes, such that it is able to extend
The service life of enlarging express highway pavement reduces maintenance maintenance costs in the future simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
Widening of Freeway engineering freeboard section new-old pavement splicing construction, including old pavement and new road surface, wherein,
Road surface is followed successively by roadbed, underlayment, semi-rigid type base and surface layer from bottom to top, and Mian Hexin road surface, old road combines
Place is for spelling pace, it is characterised in that be provided with SBS modification heated bitumen coat spelling at pace, is spelling
At pace, the semi-rigid type base on new road surface it is provided with longitudinally disposed and includes longitudinal flexible porous tube
Longitudinal rubble sewer, has backfill material in described longitudinal rubble sewer, the bottom surface of described backfill material and two gussets with
Composite geo-membrane, the top of described backfill material arranges anti-filter geotextiles；Set in the semi-rigid type base on new road surface
Putting the drain pipe that the horizontal gradient is 2% and outwards inclined downward is arranged, described drain pipe is inner and described soft
Water-permeable pipe is through, and described drain pipe outer end has protection network, the semi-rigid type base on new road surface dispenses and sprays
Priming oil and waterproof sealing.
Widening of Freeway engineering freeboard section new-old pavement concatenation construction method: it is characterized in that, order is carried out
Following steps:
Step one, on old road make spell pace, described spelling pace from bottom to top along roadbed, underlayment,
Semi-rigid type base and surface layer launch, and the most first the joint face of pace is spelled on cleaning old road, uses after cleaning out
SBS modification heated bitumen also uses cold connecting method to brush the new and old facing joint spelling pace surface,
Brushing amount is carried out by 0.3～0.5kg/m2, and interfacial agents brushing is uniform, then carries out underlayment and semi-rigid type base
Laying；
Step 2, dispenses on the new semi-rigid type base laid and sprays priming oil, and wherein, described priming oil is adopted
With slow-breaking emulsified asphalt, the residuals content in emulsified asphalt must not be less than 50%, and spread quantity controls
1.0-1.5L/m2, described priming oil spread is construction waterproof sealing after 3 days and before layer making below, wherein, and institute
State waterproof sealing to be made up of SBS modification heated bitumen and premixed macadam mixing；
Step 3, waterproof sealing after setting completed, is arranged in underlayment position new, old pavement splicing position
Including longitudinal rubble sewer of longitudinal flexible porous tube, the backfill material in longitudinal rubble sewer is by without fines
Open gradation rubble forms, and bottom surface and two gussets of backfill material are arranged instead with composite geo-membrane, the top of backfill material
Filter geotextiles；
Step 4, transversely slots at semi-rigid type base end face, and fluting longitudinal gradient is 2%, arranges horizontal stroke in fluting
To drain pipe, drain pipe is inner through with longitudinal direction flexible porous tube, and drain pipe outer end has protection network；
And after drain pipe sets up, the fluting C20 concrete backfill of Semi-rigid concrete basic unit to semi-rigid base
Layer top, fill concrete should be layered tamping, and every layer thickness cannot be greater than 20cm；
Step 5, finally carries out the laying of new surface layer.
Further, in step 2, road pavement is answered to clean before construction waterproof sealing, then spread SBS
Modified heated bitumen, spread quantity is 1.2kg/m2To 1.4kg/m2, then dispense 5mm to 10mm asphalt content and be
The premixed macadam of 0.4%, spread quantity is 6-8m3/1000m2。
Further, described groove width is generally 14cm, and described drain pipe is diameter 8cm specification
PVC-U drain pipe.
Further, described protection network is galvanized wire mesh.
Further, the top width of described longitudinal rubble sewer is not less than 30cm.
Further, described composite geo-membrane model is 0M0.3 (TCC6-M0.3)/(PET-PE), is a cloth
One film, weight 300g/m2, thickness 0.3mm.
Further, described anti-filter geotextiles model is FNG-PET-150, weight 150g/m2, equivalent aperture 095
≤ 0.21mm, infiltration coefficient >=0.1cm/s, gradient ratio≤3.
Further, the setting space of described drain pipe is between 10m～20m.
Provide the benefit that:
Can prevent the water spelling broad way section asphalt pavement structural layer from longitudinally oozing by sealing waterproof between surface layer and basic unit
Enter road bed sub-base, by being possible to prevent to spell broad way section asphalt road at side brushing heated bitumen in old road, position wide with spelling
The water of face structure sheaf laterally penetrates into old road surface structare layer, can collect splicing drip by arranging longitudinal drainage sewer
Blue or green road surface structare layer longitudinally, laterally charge for remittance, can discharge road surface by water by spaced transverse drain
Outside structure sheaf.Therefore, by the integrated application of these several measures, can effectively discharge and come together in superelevation height
Side pavement structure spells the charge for remittance at wide position, such that it is able to it is new and old effectively to solve Widening of Freeway engineering freeboard section
The problem of water-induced distress at Pavement mosaic.It is thus possible to reach to extend pavement structure service life, reduce road and build
Maintenance costs after one-tenth.
Accompanying drawing
Fig. 1 excavation superelevation stitching section road surface structare layer drainage plan.
Fig. 2 embankment superelevation stitching section road surface structare layer drainage plan.
Fig. 3 is splicing position drawing.
Fig. 4 is I--I sectional schematic diagram.
Fig. 5 is longitudinal rubble sewer section full-page proof.
Fig. 6 is one of work progress.
Fig. 7 is the two of work progress.
Fig. 8 is the three of work progress.
Fig. 9 is the four of work progress.
In figure, A roadbed, B underlayment, C semi-rigid type base, D surface layer, 1 spells pace, 11 binding materials and anti-
Water material, 21 priming oils, 22 waterproof sealings, 3 longitudinal rubble sewers, 31 backfill material, 32 composite geo-membranes,
33 anti-filter geotextiles, 34 longitudinal flexible porous tubes, 41 drain pipies, 42 protection networks.
Detailed description of the invention
Widening of Freeway engineering superelevation high side is spelled broad way road section surface structure sheaf draining and is described: Widening of Freeway
Engineering new-old pavement is spelled the draining at wide position and is always a problem the most scabrous, due to new-old pavement structure
The difference of material character, often forms longitudinal straight joint at the wide position of spelling, simultaneously because the road camber of superelevation high side
Particular design, make the infiltration of the road table within pavement structure all come together in new-old concrete bond convergence part, if this position
Drainage measure arranges improper, and scheme is unreasonable, it is easy to cause spelling broad way surface large area water-induced distress, finally
Serviceability and the service life of pavement of road will be substantially reduced.
The aggregate measures of spelling broad way section water-induced distress of the present invention are main through the following steps that carry out reality
Execute:
1, making on old road and spell pace 1, step is from bottom to top along roadbed A, underlayment B, semi-rigid
Basic unit C and surface layer D launches, and first the joint face of pace is spelled on cleaning old road, is not allow for loosening what throwing dissipated
Gather materials, accomplish free from dust, pollution-free, step surface should not have interlayer and foreign material that upper strata stays.
Use SBS modification heated bitumen as the binding material of new and old facing joint and waterproof material after cleaning out
11, and use cold connecting method that the new and old facing joint spelling pace surface is brushed, brushing amount is pressed
0.3～0.5kg/m2Carrying out, interfacial agents brushing is wanted uniformly, with reference to Fig. 6.
Then the laying of underlayment and semi-rigid type base is carried out；With reference to Fig. 7.
2, first dispense on the new semi-rigid type base laid and spray priming oil 21, waterproof sealing is set the most again
22, wherein.Priming oil uses slow-breaking emulsified asphalt, and the residuals content in emulsified asphalt must not be less than 50%,
Spread quantity controls at 1.0-1.5L/m2 (determining after examination is spilt), and priming oil spread is after 3 days and layer below spreads
Build front construction waterproof sealing.Wherein, waterproof sealing 22 is by SBS modification heated bitumen and premixed macadam (Calx
Rock) composition, answer road pavement to clean before construction waterproof sealing, then spread SBS modification heated bitumen, spills
Cloth amount is 1.2-1.4kg/m2(through examination spill after determine), then dispense 5-10mm asphalt content be 0.4% pre-
Mixing rubble (limestone), spread quantity is 6-8m3/1000m2(spread through examination and determine), with reference to Fig. 7.
3, waterproof sealing 22 is after setting completed, and the base layer position setting at new-old pavement splicing position includes vertical
To longitudinal rubble sewer 3 of flexible porous tube 34, wherein, the size of longitudinal rubble sewer should be according to charge for remittance amount
Concrete decision, but from the angle of convenient construction, the top width in gutter is not less than 30cm, thickness and groundwork thickness
W is equal.Backfill material in ditch 31 is made up of the open gradation rubble without fines, the bottom surface of backfill material 31 and
Two gussets, with composite geo-membrane 32, block to prevent the fine grained soil of surface layer structure and splicing longitudinal joint from penetrating into water
Backfill material hole or drain pipe pipe are empty.
Longitudinal rubble sewer top arranges anti-filter geotextiles 33, with reference to Fig. 7.
4, then transversely slotting at semi-rigid type base end face, fluting longitudinal gradient is generally 2%, groove width one
As be 14cm, and D8 horizontal PVC-U drain pipe 41 is set in fluting, drain pipe 41 inner with longitudinally
Soft rock water-permeable pipe 34 is through, and drain pipe outer end has protection network 42, after drain pipe sets up, semi-rigid mixed
The fluting C20 concrete backfill to semi-rigid type base top of solidifying soil matrix layer, fill concrete should be layered tamping,
Every layer thickness cannot be greater than 20cm.Semi-rigid type base end face need to be arranged by certain longitudinal gradient fluting, fluting longitudinal gradient
The relatively big water being conducive to longitudinal sewer is quickly discharged, but semi-rigid type base groove depth can be made the deepest, without
Ji；Fluting longitudinal gradient arranges too small, although semi-rigid type base digs the most deeply but is unfavorable for the row of longitudinal sewer water
Go out.Therefore, considering economy and functional, semi-rigid type base fluting longitudinal gradient is generally 2%, fluting width
Degree generally 14cm.D8 horizontal PVC-U drain pipe is set in box cut, after drain pipe sets up,
The C20 concrete backfill to semi-rigid type base top of the fluting of Semi-rigid concrete basic unit, fill concrete should
Layering tamping, every layer thickness cannot be greater than 20cm.The end application galvanized wire mesh of transverse drain covers,
Form protection network, prevent foreign material entrance, plant intrusion or rodent from nesting, block transverse drain, shadow
Rehearse with musical accompaniment water function.
5, finally carry out the laying of new surface layer.
The structure that the new-old pavement ultimately formed combines is as follows:
In the semi-rigid type base at Highway Super-elevation high side road surface structare layer splicing position, arrange longitudinal rubble ooze
Ditch, and, rubble sewer top arranges anti-filter geotextiles, around parcel composite geo-membrane.
Arranging longitudinal flexible porous tube inside longitudinal rubble sewer, specification is D8 flexible porous tube, and is spaced one
Set a distance arranges horizontal pvc-u pipe, by the water within longitudinal sewer by drain pipe to discharge path face structure sheaf.
The internal rubble of longitudinal rubble sewer be have that certain grating requires can be with the rubble of draining.
The composite geo-membrane model that longitudinal rubble sewer peripheral (on side and three faces of lower surface) wraps up is
0M0.3 (TCC6-M0.3)/(PET-PE), is cloth one film, weight 300g/m2, thickness 0.3mm, composite earth
Work film is possible to prevent the water within sewer to immerse to the basic unit being in contact with it, and destroys basic unit.
At longitudinal rubble sewer top, the counter of laying considers geotextiles, and the anti-filter geotextiles model of its middle and upper part is
FNG-PET-150, weight 150g/m2, equivalent aperture 095≤ 0.21mm, infiltration coefficient >=0.1cm/s, gradient ratio
GR≤3, anti-filter geotextiles can make the water of top course flow into sewer smoothly, be possible to prevent fine grained soil simultaneously
Penetrate into sewer thus block sewer and affect the longitudinal drainage function of sewer.
Composite geo-membrane and anti-filter geotextiles have organized a structure preventing infiltration jointly, due to highway road
Wide degree difference is spelled in face, and therefore superelevation high side road surface structare layer is the most different, therefore in the charge for remittance amount at splicing position
The height of longitudinal drainage sewer and the spacing of drain pipe can be adjusted according to concrete charge for remittance amount, and draining is oozed
The height of ditch is generally the thickness W of basic unit, and the setting space of drain pipe is typically between 10～20m.
The basic unit top spelling wide section in Highway Super-elevation high side arranges waterproof sealing, and waterproof sealing should be in permeable layers
Oil spread is constructed after 3 days and before layer making below, answers road pavement to clean, then spread SBS before construction
Modified heated bitumen, spread quantity is 1.2-1.4kg/m2(determining after examination is spilt), then dispense 5-10mm Colophonium use
Amount is the premixed macadam (limestone) of 0.4%, and spread quantity is 6-8m3/1000m2(spread through examination and determine).Draining
The setting of sealing is possible to prevent oozing under water of pavement surface structure, by superelevation horizontal wall inscription, by pavement surface structure
Water all come together in Pavement mosaic position, the beneficially collection of the internal infiltration of longitudinal drainage sewer road surface structare layer.
One layer of heated bitumen of structure sheaf side brushing at the new and old facing joint of Highway Super-elevation high side, heat drip
Blue or green employing SBS is modified, and brushing amount presses 0.3～0.5kg/m2Carrying out, on the one hand brushing heated bitumen can make the old and new drip
Blue or green road surface structare layer preferably combines, and on the other hand can prevent the water spelling wide road section surface structure sheaf from laterally penetrating into
In the road surface structare layer of old road, the beneficially collection of the internal infiltration of longitudinal drainage sewer road surface structare layer.
Claims (9)
1. Widening of Freeway engineering freeboard section new-old pavement splicing construction, including old pavement and new road surface,
Wherein, road surface is followed successively by roadbed, underlayment, semi-rigid type base and surface layer from bottom to top, and face, old road is with new
Junction, road surface is for spelling pace, it is characterised in that be provided with SBS modification heat in described spelling pace lap-joint
Colophonium coat, is provided with at pace longitudinally disposed spelling and includes in the semi-rigid type base on new road surface
Longitudinal rubble sewer of longitudinal flexible porous tube, has backfill material, described backfill material in described longitudinal rubble sewer
Bottom surface and two gussets with composite geo-membrane, the top of described backfill material, anti-filter geotextiles is set；On new road surface
Semi-rigid type base in the drain pipe that the horizontal gradient is 2% and outwards inclined downward is arranged, described draining are set
Inner and the described flexible porous tube of pipe is through, and described drain pipe outer end has protection network, and the half of new road surface is just
Property basic unit on dispense and spray priming oil and waterproof sealing.
2. the construction of the Widening of Freeway engineering freeboard section new-old pavement splicing construction described in claim 1
Method: it is characterized in that, order follows the steps below:
Step one, makes on old pavement and spells pace, and described spelling pace is from bottom to top along roadbed, base
Layer, semi-rigid type base and surface layer launch, and the most first cleaning old pavement spells the joint face of pace, cleans out
Rear use SBS modification heated bitumen also uses cold connecting method to enter the new and old facing joint spelling pace surface
Row brushing, brushing amount is carried out by 0.3～0.5kg/m2, and interfacial agents brushing is uniform, then carries out underlayment and half
The laying of rigid base；
Step 2, dispenses on the new semi-rigid type base laid and sprays priming oil, and wherein, described priming oil is adopted
With slow-breaking emulsified asphalt, the residuals content in emulsified asphalt must not be less than 50%, and spread quantity controls
1.0-1.5L/m2, described priming oil spread is construction waterproof sealing after 3 days and before layer making below, wherein, and institute
State waterproof sealing to be made up of SBS modification heated bitumen and premixed macadam mixing；
Step 3, waterproof sealing after setting completed, is arranged in underlayment position new, old pavement splicing position
Including longitudinal rubble sewer of longitudinal flexible porous tube, the backfill material in longitudinal rubble sewer is by without fines
Open gradation rubble forms, and bottom surface and two gussets of backfill material are arranged instead with composite geo-membrane, the top of backfill material
Filter geotextiles；
Step 4, transversely slots at semi-rigid type base end face, and fluting longitudinal gradient is 2%, arranges horizontal stroke in fluting
To drain pipe, drain pipe is inner through with longitudinal direction flexible porous tube, and drain pipe outer end has protection network；
And after drain pipe sets up, the fluting C20 concrete backfill of Semi-rigid concrete basic unit to semi-rigid base
Layer top, fill concrete should be layered tamping, and every layer thickness cannot be greater than 20cm；
Step 5, finally carries out the laying of new surface layer.
Construction method the most according to claim 2, it is characterised in that in step 2, construction is anti-
Answering road pavement to clean before water seal layer, then spread SBS modification heated bitumen, spread quantity is 1.2kg/m2Extremely
1.4kg/m2, then dispensing the premixed macadam that 5mm to 10mm asphalt content is 0.4%, spread quantity is
6-8m3/1000m2。
Construction method the most according to claim 2, it is characterised in that described groove width is generally
14cm, described drain pipe is the PVC-U drain pipe of diameter 8cm specification.
Construction method the most according to claim 2, it is characterised in that described protection network is galvanized iron
Silk screen.
Construction method the most according to claim 2, it is characterised in that described longitudinal rubble sewer
Top width is not less than 30cm.
Construction method the most according to claim 2, it is characterised in that described composite geo-membrane model
For 0M0.3 (TCC6-M0.3)/(PET-PE), it is cloth one film, weight 300g/m2, thickness 0.3mm.
Construction method the most according to claim 2, it is characterised in that described anti-filter geotextiles model
For FNG-PET-150, weight 150g/m2, equivalent aperture 095≤ 0.21mm, infiltration coefficient >=0.1cm/s, gradient
Than GR≤3.
Construction method the most according to claim 2, it is characterised in that between the setting of described drain pipe
Away between 10m～20m.
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| CN201610330962.2A CN105839489B (en) | 2016-05-18 | 2016-05-18 | Widening of Freeway engineering freeboard section new-old pavement splicing construction and construction method |
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| CN201610330962.2A CN105839489B (en) | 2016-05-18 | 2016-05-18 | Widening of Freeway engineering freeboard section new-old pavement splicing construction and construction method |
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| CN106758644A (en) * | 2017-01-22 | 2017-05-31 | 苏谦 | Light-weight foamed concrete road surface structure and its construction method |
| CN107740323A (en) * | 2017-11-02 | 2018-02-27 | 崔宇鹏 | Semi-rigid and semi-flexible highway extension splicing structure and construction method |
| CN108457150A (en) * | 2018-03-21 | 2018-08-28 | 中国冶集团有限公司 | A kind of road widening project anticracking crack structure and its construction method |
| CN108951335A (en) * | 2018-09-06 | 2018-12-07 | 四川省交通运输厅公路规划勘察设计研究院 | A kind of light-duty escarpment road structure |
| CN110258238A (en) * | 2019-05-09 | 2019-09-20 | 昆山市交通航务工程有限公司 | A kind of laying method of new-old concrete bond intersection |
| CN110644324A (en) * | 2019-10-11 | 2020-01-03 | 中交路桥北方工程有限公司 | Splicing construction method for reconstructing and expanding new road and old road |
| CN110700036A (en) * | 2019-10-18 | 2020-01-17 | 齐钊 | New old road surface mosaic structure of super high section of highway extension project |
| CN114395954A (en) * | 2021-12-31 | 2022-04-26 | 池州市交通规划设计院 | Splicing structure and construction method for new and old road surfaces at ultrahigh section of highway |
| CN114960900A (en) * | 2022-08-01 | 2022-08-30 | 四川省亚通工程咨询有限公司 | Drainage pipeline for highway reconstruction and extension project |
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