CN107386031B - The processing method of Expressway Extension Project engaging portion - Google Patents
The processing method of Expressway Extension Project engaging portion Download PDFInfo
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- CN107386031B CN107386031B CN201710784087.XA CN201710784087A CN107386031B CN 107386031 B CN107386031 B CN 107386031B CN 201710784087 A CN201710784087 A CN 201710784087A CN 107386031 B CN107386031 B CN 107386031B
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- 238000003672 processing method Methods 0.000 title claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 46
- 239000004575 stone Substances 0.000 claims abstract description 45
- 239000002689 soil Substances 0.000 claims description 31
- 238000005553 drilling Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004062 sedimentation Methods 0.000 abstract description 7
- 238000005056 compaction Methods 0.000 abstract description 3
- 230000008521 reorganization Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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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
- E01C2201/00—Paving elements
- E01C2201/16—Elements joined together
- E01C2201/167—Elements joined together by reinforcement or mesh
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of processing methods of Expressway Extension Project engaging portion, by using the side slope angle of former roadbed, slope surface is built step by step, and the inclined-plane for being set as being tilted down to former roadbed center position from the former shoulder by slope surface, then it is laid with TGXG in every grade of slope surface, and reinforcing rib is set, and compaction in layers obtains new roadbed, realize the effect that new-old concrete bond is enable effectively to resist longitudinal force, the inhomogeneities of new-old concrete bond sedimentation is balanced, so as to avoid the generation of pavement crack.By setting broken stone pile in new-old concrete bond seam both sides, and broken stone pile and supporting beam, retainer plate are used cooperatively, effectively reduced between new-old concrete bond because of the possibility in horizontal force generation crack.Widening road bed and the settling amount on road surface, prevent the generation in crack between new-old pavement, improve the construction quality of reorganization and expansion highway, increase service life during so as to effectively reduce highway extension project.
Description
Technical field
The present invention relates to road construction field more particularly to a kind of processing sides of Expressway Extension Project engaging portion
Method.
Background technology
With the rapid development of Chinese society economy, automobile is had become as the essential vehicles of human society at present,
And it is increasing with vehicle, existing major part highway cannot meet the growing transport need of society,
For this purpose, it is imperative to carry out upgrading to original highway.Wherein widen either design also to express highway roadbed
It is construction, is all the key that improvement project.And highway, after being open to traffic for many years, subgrade settlement has been basically completed, roadbed
Widened section necessarily leads to the crack using longitudinal crack as representative, so as to highway due to the differential settlement of new-old concrete bond
Generate destruction.For that purpose it is necessary to strengthen the Treatment Design optimization of engaging portion during to highway extension project and the improvement of method, make to sink
Drop amount is kept at least, to ensure the quality of highway.While new and old embankment differential subsidence is reduced, new-old pavement difference is reduced
Property sedimentation, new and old Embankment Settlements, new-old pavement disease etc. can be reduced, to Expressway Extension Project have great meaning
Justice.
Invention content
The present invention provides a kind of Expressway Extension Project engaging portion for the above-mentioned problems in the prior art
Processing method, widening road bed and the settling amount on road surface when can effectively reduce highway extension project are prevented between new-old pavement
The generation in crack.
To achieve the above object with some other purposes, the present invention adopts the following technical scheme that：
A kind of processing method of Expressway Extension Project engaging portion, mainly includes the following steps that：
Step 1 need to widen former roadbed position and measure setting-out, and position need to be widened by marking, along the former shoulder
Slope surface is opened up step by step, so that the original shoulder is in step-like, the surface of the step is set as by the former shoulder
The angle of the inclined-plane tilted down to former roadbed center position, the inclined-plane and horizontal plane is 10-15 °, the slope surfaces at different levels
Vertical height is 1-2 meters, and width is 1-2 meters；
Step 2 is laid with the first TGXG that width is 2-3 meters wide, and in the described first geotechnological lattice on floor plane
Gravelly soil is laid on grid, is compacted after being often laid with the gravelly soil of 30-45 cm thicks, until neat with the peak of upper level slope surface
It is flat；
Step 3 is laid with the second geotechnological lattice that width is 2-4 meters on the gravelly soil surface for reaching concordant with upper level slope surface
Grid, and along highway extending direction a reinforcing rib is laid at interval of 3-5 meters in second TGXG；
Wherein, the reinforcing rib, which is set as one end, has the cylindricality of opening, the opening extension along the reinforcing rib side wall
To the middle part of the reinforcing rib, the not opening one end of the reinforcing rib is stretched into the former roadbed, and with the side of the former roadbed
Face is vertical, and the other end is separated from opening to both sides, so that the reinforcing rib forms Y-shaped structure；
Step 4, the casting concrete on the reinforcing rib, and concrete layer is made to cover the reinforcing rib；
Step 5 is laid with gravelly soil according to the method for step 2 on the concrete layer, and repeats step 3 and step 4, directly
It is flushed to last layer concrete layer with the surface of the former roadbed, that is, forms the new roadbed of broadening；
Step 6 drills respectively in the seam both sides of the former roadbed and new roadbed, and a small amount of coagulation is poured into the drilling
Soil, and the cement concrete broken stone pile coordinated with the boring aperture is inserted into the drilling before concrete setting, and make
The broken stone pile protrudes 15-20 centimetres of the former roadbed and new road bed；
Step 7 is laid with supporting beam between two broken stone piles, and is arranged in the broken stone pile to fixed supporting beam
Retainer plate；
Step 8 is laid with road surface, and the upper faying face in the junction of new-old pavement and lower faying face in the supporting beam
Between be laid with Glass Fibre Earth Grid.
Preferably, in the processing method of the Expressway Extension Project engaging portion, first TGXG
It is fixed in the slope surfaces at different levels by geotechnological glue with the second TGXG.
Preferably, in the processing method of the Expressway Extension Project engaging portion, the length of the reinforcing rib
It it is 1.5-2.5 meters, and the reinforcing rib stretches into half of the length of the former roadbed for the reinforcing rib length.
Preferably, in the processing method of the Expressway Extension Project engaging portion, the length of the supporting beam
Distance between the broken stone pile matches, and the both ends of the supporting beam are set as the arc being recessed to the supporting beam central side
Shape so that the both ends of the supporting beam and the side wall of the broken stone pile are mutually supported, is provided at the top of the arc of the supporting beam
Through-hole；The retainer plate is set as the matched annular of outer diameter of internal diameter and the broken stone pile, the side setting of the retainer plate
Have gap, be provided on the gap with the matched bolt of the lead to the hole site so that the retainer plate be inserted in it is described broken
After stone mar, the supporting beam is embedded in the gap, and the bolt is inserted into the through-hole.
Preferably, in the processing method of the Expressway Extension Project engaging portion, the original roadbed or new road
The bore position of base side is symmetrical, and the spacing between the drilling of homonymy is 7-10 meters.
Preferably, in the processing method of the Expressway Extension Project engaging portion, the diameter of the broken stone pile
It it is 0.4-0.6 meters, the spacing on the original roadbed and new roadbed between corresponding two broken stone piles is 2-3 meters.
Preferably, in the processing method of the Expressway Extension Project engaging portion, often it is compacted one layer of gravelly soil
Afterwards, the loosened soil and residue on the surface of the compacting are cleared up.
Preferably, in the processing method of the Expressway Extension Project engaging portion, the TGXG is steel
Mould TGXG.
The present invention includes at least following advantageous effect：
In the processing method of the Expressway Extension Project engaging portion of the present invention, by using the slope angle of former roadbed
Degree, builds slope surface step by step so that widened section roadbed and former roadbed are successively be overlapped, strengthen the contact surface between new-old concrete bond, have
Effect prevents the generation in crack between new-old concrete bond；By being set as slope surface from the former shoulder to former roadbed center position
The inclined-plane tilted down so that new roadbed fill part is more closer to old roadbed side filling gravelly soil, so that new and old
Roadbed cross section bearing capacity significantly increases, and then effectively reduces the settling amount of widening road bed；By on every grade of slope surface upper berth
If TGXG, and reinforcing rib is set, it is big using TGXG intensity, small advantage is deformed, increases the combination of new-old concrete bond,
Increase engaging portion shear resistance, prevent destruction of the sedimentation of new roadbed to old road base, it is uneven so as to reach stable new-old concrete bond
The effect of sedimentation so that the method for new roadbed is more firm, further reduces the settling amount of roadbed, and former roadbed is stretched into one end
Reinforcing rib can also play certain supporting role to new roadbed, and the further inhomogeneities of balance new-old concrete bond sedimentation, from
And avoid the generation of pavement crack；In addition, there is opening, and former roadbed is stretched into the other end by the way that reinforcing rib is set as one end
Afterwards, just the other end of reinforcing rib is opened by opening so that reinforcing rib forms Y-shaped structure, in the second TGXG
The reinforcing rib that opening separates can disperse the active force conducted downwards by road surface upper strata, and then reduce the settling amount of new roadbed, make
It is further balanced to obtain subgrade settlement, reduces the generation of pavement crack；New roadbed is obtained by compaction in layers so that the pressure of roadbed
Solidity is effectively improved, and in the case where compactness improves, the settling amount of roadbed also just further reduces, that is, reduces new
Because longitudinal force generates the possibility in crack between old roadbed.By setting broken stone pile, and by rubble in new-old concrete bond seam both sides
Stake is used cooperatively with supporting beam so that the distance that supporting beam can limit opposite broken stone pile will not reduce, and then reduce new
The generation of the compression fissure of old roadbed seam crossing additionally by the use of cooperation retainer plate, and causes between opposite broken stone pile
Distance will not increase, and then reduce the generation for separating crack between new-old concrete bond, that is, reduce between new-old concrete bond because of transversely acting
Power generates the possibility in crack.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the method schematic diagram of the processing method of Expressway Extension Project engaging portion provided by the invention；
Fig. 2 is structure diagram when reinforcing rib opening of the present invention is opened；
Fig. 3 is the structure diagram of supporting beam of the present invention and retainer plate.
Specific embodiment
It elaborates below in conjunction with the accompanying drawings to the present invention, to enable those of ordinary skill in the art refering to energy after this specification
It is enough to implement according to this.
As depicted in figs. 1 and 2, a kind of processing method of Expressway Extension Project engaging portion, mainly including following step
Suddenly：
Step 1 need to widen position to former roadbed 1 and measure setting-out, and position need to be widened by marking, along former 1 side of roadbed
Edge opens up slope surface 2 step by step, so that 1 edge of the original roadbed is in step-like, the surface of the step is set as by the former roadbed 1
The angle of the inclined-plane that edge is tilted down to former 1 center position of roadbed, the inclined-plane and horizontal plane is 10-15 °, the slopes at different levels
The vertical height in face 2 is 1-2 meters, and width is 1-2 meters.
Step 2 is laid with the first TGXG 3 that width is 2-3 meters wide, and in the described first geotechnological lattice on floor plane
Gravelly soil is laid on grid 3, is compacted after being often laid with the gravelly soil of 30-45 cm thicks, until the peak with upper level slope surface 2
It flushes.
Step 3 is laid with the second geotechnique that width is 2-4 meters on the gravelly soil surface for reaching concordant with upper level slope surface 2
Grid 4, and along highway extending direction a reinforcing rib 5 is laid at interval of 3-5 meters in second TGXG 4.
Wherein, the reinforcing rib 5, which is set as one end, has the cylindricality of opening along 5 side wall of reinforcing rib, and the opening is prolonged
Extend to the middle part of the reinforcing rib 5, the not opening one end of the reinforcing rib 5 is stretched into the former roadbed 1, and with the former roadbed
1 side is vertical, and the other end is separated from opening to both sides, so that the reinforcing rib 5 forms Y-shaped structure.
Step 4, the casting concrete on the reinforcing rib 5, and concrete layer 6 is made to cover the reinforcing rib 5.
Step 5 is laid with gravelly soil according to the method for step 2 on the concrete layer 6, and repeats step 3 and step 4,
Until last layer concrete layer 6 is flushed with the surface of the former roadbed 1, that is, form the new roadbed of broadening.
Step 6 drills respectively in the seam both sides of the former roadbed 1 and new roadbed, is poured into the drilling a small amount of mixed
Solidifying soil, and the cement concrete broken stone pile 7 coordinated with the boring aperture is inserted into the drilling before concrete setting, and
The broken stone pile 7 is made to protrude 15-20 centimetres of the former roadbed 1 and new road bed.
Step 7 is laid with supporting beam 8 between two broken stone piles 7, and is arranged in the broken stone pile 8 to fixed branch
Support the retainer plate 9 of beam 8.
Step 8 is laid with road surface, and the upper faying face in the junction of new-old pavement and lower combination in the supporting beam 8
Glass Fibre Earth Grid 10 is laid between face.
Be 10-15 ° in slope surface angle by testing repeatedly and analysis is found in said program, slope surfaces at different levels it is vertical
It is highly 1-2 meters, it is best for roadbed subsidence control effect when slope surface width is 1-2 meters, and convenient for construction.By in each layer
The surface of slope surface is laid with concrete layer, on the one hand can play the role of fixing and supporting to reinforcing rib, on the other hand using mixed
The intensity of soil is coagulated, the sedimentation of new pavement is reduced, so as to control the generation of pavement crack.Cement concrete broken stone pile has certain
Intensity, while the bearing capacity collective effect of inter-pile soil can be made full use of, and can transmit in load to deep foundation base, have compared with
Good technical performance, can effectively control the generation in crack at pavement joint, while the broken stone pile is cheap, can drop
Low construction cost.By being laid with Glass Fibre Earth Grid, glass soil between the upper faying face of new-old pavement junction and lower faying face
Work grid intensity is big, modulus is high, has very high wearability and to cold, while without long-term creep, and thermal stability is good, thus
The anti-shear performance of new-old pavement junction can be significantly improved, so as to further prevent the generation of pavement crack.
In one preferred embodiment, 3 and second TGXG 4 of the first TGXG is fixed on institutes at different levels by geotechnological glue
It states in slope surface 2.
In said program, the first TGXG and the second TGXG are fixed in slope surfaces at different levels by geotechnological glue,
So that TGXG will not be displaced in the construction process, so as to ensure that construction quality.
In one preferred embodiment, the length of the reinforcing rib 5 is 1.5-2.5 meters, and the reinforcing rib 5 stretches into the former road
The length of base 1 is the half of 5 length of reinforcing rib.
In said program, by being tested repeatedly with practice of construction it has been observed that the length of reinforcing rib is arranged on 1.5-2.5
Meter Jian, and the half of reinforcing rib is arranged on inside former roadbed so that the other half reinforcing rib is in above slope surface, between new-old concrete bond
Equally distributed reinforcing rib can be good at balancing the differential settlement of new-old concrete bond, and then play good support to new roadbed
Effect, the effective generation for reducing pavement crack.
As shown in figure 3, in a preferred embodiment, the distance between the length of the supporting beam 8 and the broken stone pile 7 matches
It closes, and the both ends of the supporting beam 8 are set as the arc being recessed to 8 central side of supporting beam, so that the two of the supporting beam 8
The side wall with the broken stone pile 7 is held mutually to support, through-hole 11 is provided at the top of the arc of the supporting beam 8；The retainer plate 9 is set
The matched annular of outer diameter of internal diameter and the broken stone pile 7 is set to, the side of the retainer plate 9 is provided with gap 12, described to slit
Be provided on mouthfuls 12 with the matched bolt 13 in 11 position of through-hole so that the retainer plate 9 is being inserted in the broken stone pile 7
Afterwards, the supporting beam 8 is embedded in the gap 12, and the bolt 13 is inserted into the through-hole 11.
In said program, by setting supporting beam between broken stone pile, and specific retainer plate is configured so that supporting beam
Distance the broken stone pile of new-old concrete bond both sides can be limited, so that the broken stone pile positioned at roadbed both sides can support
The effect of lateral pull between anti-new-old concrete bond, so as to avoid the generation of the pavement crack caused by horizontal force.
In one preferred embodiment, the bore position of the original roadbed 1 or new roadbed side is symmetrical, and positioned at the drilling of homonymy
Between spacing be 7-10 meters.
In said program, spacing is set as between 7-10 meters between drilling, you can resists the lateral pull between roadbed well.
It is a diameter of 0.4-0.6 meters of the broken stone pile 7, corresponding on the original roadbed 1 and new roadbed in one preferred embodiment
Two broken stone piles 7 between spacing be 2-3 meters.
In said program, when the spacing between broken stone pile is 5 times or so of broken stone pile diameter, the collaboration between two broken stone piles
Active force is most strong, thus the active force for the seam crossing being more highly resistant between new-old concrete bond.
In one preferred embodiment, after being often compacted one layer of gravelly soil, loosened soil and residue to the surface of the compacting carry out clear
Reason.
In said program, to cleaning soil layer surface after one layer of gravelly soil of every compacting, the shadow because of loosened soil and residue is avoided
It rings and the compaction quality of next layer of crushed stone soil layer is affected, that is, increase the adhesiveness between crushed stone soil layer, be correspondingly improved
The stability of entire widening road bed, effectively reduces the sedimentation of widening road bed.
In one preferred embodiment, the TGXG is steel plastic geogrid.
In said program, steel plastic geogrid is made with high tensile steel wire, intensity is big, deformation is small, creep is small, it is corrosion-resistant,
Long lifespan, therefore, steel plastic geogrid can meet the use demand of all kinds of permanent works 100 years or more, and performance is excellent, ruler
Very little stability is good, and convenient and quick construction, period are short, at low cost, thus selects steel plastic geogrid can be to the roadbed widened
Good fixed function is played, while construction at low cost is convenient.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and the legend herein shown with description.
Claims (8)
1. a kind of processing method of Expressway Extension Project engaging portion, including：
Step 1 need to widen former roadbed position and measure setting-out, and position need to be widened by marking, along the former shoulder step by step
Slope surface is opened up, so that the original shoulder is in step-like；
Step 2 is laid with the first TGXG on floor plane, and is laid with gravelly soil in first TGXG, often spreads
If being compacted after one layer of gravelly soil, until being flushed with the peak of upper level slope surface；
Step 3 is laid with the second TGXG on the gravelly soil surface for reaching concordant with upper level slope surface；
Wherein, it is further comprising the steps of：
Step 4, the casting concrete on the reinforcing rib, and concrete layer is made to cover the reinforcing rib；
Step 5 is laid with gravelly soil according to the method for step 2 on the concrete layer, and repeats step 3 and step 4, until most
Later layer concrete layer is flushed with the surface of the former roadbed, that is, forms the new roadbed of broadening；
Step 6 drills respectively in the seam both sides of the former roadbed and new roadbed, and a small amount of concrete is poured into the drilling,
And the cement concrete broken stone pile coordinated with the boring aperture is inserted into the drilling before concrete setting, and make described
15-20 centimetres of the broken stone pile protrusion former roadbed and new road bed；
Step 7 is laid with supporting beam between two broken stone piles, and consolidating to fixed supporting beam is arranged in the broken stone pile
Fixed circle；
Step 8 is laid with road surface in the supporting beam, and is spread between the upper faying face and lower faying face of the junction of new-old pavement
If Glass Fibre Earth Grid；
In addition, in the step 1, the surface of the step be set as from the former shoulder to former roadbed center position to
Under inclined inclined-plane, the angle of the inclined-plane and horizontal plane is 10-15 °, and the vertical height of the slope surfaces at different levels is 1-2 meters, wide
Spend is 1-2 meters；
In the step 2, the width of first TGXG is 2-3 meters；The laying depth of every layer of gravelly soil is 30-
45 centimetres；
In the step 3, the width of second TGXG is 2-4 meters；And along highway extending direction in the described second soil
At interval of a piece reinforcing rib of 3-5 meters of layings on work grid；
Wherein, the reinforcing rib, which is set as one end, has the cylindricality of opening along the reinforcing rib side wall, and the opening extends to institute
The middle part of reinforcing rib is stated, the not opening one end of the reinforcing rib is stretched into the former roadbed, and is hung down with the side of the former roadbed
Directly, the other end is separated from opening to both sides, so that the reinforcing rib forms Y-shaped structure.
2. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the described first geotechnological lattice
Grid and the second TGXG are fixed on by geotechnological glue in the slope surfaces at different levels.
3. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the length of the reinforcing rib
It is 1.5-2.5 meters to spend, and the reinforcing rib stretches into half of the length of the former roadbed for the reinforcing rib length.
4. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the length of the supporting beam
Degree matches, and the both ends of the supporting beam are set as what is be recessed to the supporting beam central side with the distance between the broken stone pile
Arc, so that the both ends of the supporting beam and the side wall of the broken stone pile are mutually supported, the top setting of the arc of the supporting beam
There is through-hole；The retainer plate is set as the matched annular of outer diameter of internal diameter and the broken stone pile, and the side of the retainer plate is set
Be equipped with gap, be provided on the gap with the matched bolt of the lead to the hole site so that the retainer plate be inserted in it is described
After broken stone pile, the supporting beam is embedded in the gap, and the bolt is inserted into the through-hole.
5. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the original roadbed or new
The bore position of roadbed side is symmetrical, and the spacing between the drilling of homonymy is 7-10 meters.
6. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the broken stone pile it is straight
Diameter is 0.4-0.6 meters, and the spacing on the original roadbed and new roadbed between corresponding two broken stone piles is 2-3 meters.
7. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, often it is compacted one layer of rubble
After soil, the loosened soil and residue on the surface of the compacting are cleared up.
8. the processing method of Expressway Extension Project engaging portion as described in claim 1, wherein, the TGXG is
Steel plastic geogrid.
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| CN108661060B (en) * | 2018-05-22 | 2020-05-08 | 宁夏路桥工程股份有限公司 | Method for reinforcing road expansion construction excavation slope |
| CN109098058B (en) * | 2018-08-21 | 2023-09-26 | 宁波交通工程建设集团有限公司 | Traffic load vibration reduction structure and construction method |
| CN110528347B (en) * | 2019-09-09 | 2021-08-24 | 中国建设基础设施有限公司 | Permeable embankment structure applied to gully section and construction method thereof |
| CN110820455A (en) * | 2019-11-27 | 2020-02-21 | 江西省公路桥梁工程有限公司 | Construction process for lapping and expanding roadbed of asphalt concrete highway |
| CN111827033A (en) * | 2020-07-21 | 2020-10-27 | 湖南长株高速公路开发有限责任公司 | Construction method for widening and filling solidified soil of expressway intercommunicating ramp roadbed |
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| WO2008131480A1 (en) * | 2007-04-26 | 2008-11-06 | Paul Camilleri | Method of constructing building slabs and pavements and storing water |
| CN102619150A (en) * | 2012-04-26 | 2012-08-01 | 石家庄铁道大学 | Anchored roadbed widening method |
| CN205501749U (en) * | 2016-03-28 | 2016-08-24 | 重庆建工市政交通工程有限责任公司 | Structure is widened to highway subgrade |
| CN106120501B (en) * | 2016-08-10 | 2018-01-09 | 浙江大学城市学院 | Existing barricade section roadbed spells width and increases structure and construction method |
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