CN106522055A - Construction method of widening roadbed of road - Google Patents
Construction method of widening roadbed of road Download PDFInfo
- Publication number
- CN106522055A CN106522055A CN201610986336.9A CN201610986336A CN106522055A CN 106522055 A CN106522055 A CN 106522055A CN 201610986336 A CN201610986336 A CN 201610986336A CN 106522055 A CN106522055 A CN 106522055A
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- roadbed
- platform
- construction method
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- domatic
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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
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a construction method of widening a roadbed of a road. Slopes with the gradient identical as an original roadbed are manufactured on the original roadbed stage by stage; then wood piles playing a role in supporting are driven into gravel soil layers in a crossing mode, specifically, the gravel soil layers are compacted one by one; and geogrids used for achieving fixation and improving firmness of junction of the new roadbed and the original roadbed are laid on the surface of each layer. Thus, the widened roadbed and the original roadbed are tightly combined, the degree of settling of the widened roadbed is effectively reduced, cracks between the new roadbed and the original roadbed are avoided, and therefore the service life of the widened road is prolonged.
Description
Technical field
The present invention relates to road construction field, more particularly to a kind of construction method of highway broadening roadbed.
Background technology
With developing rapidly for Chinese society economy, present most of highway function can not meet society and day by day increase
Transport need, for this purpose, it is imperative to carry out upgrading to original highway.Roadbed Widening is either designed or is applied
Work, is all the key of improvement project.And highway, Jing after many years be open to traffic, subgrade settlement has been basically completed, widening of subgrade section by
In the differential settlement of new-old concrete bond, necessarily lead to the crack with longitudinal cracks as representative, so that destruction is produced to highway.For
This, it is necessary to strengthen design optimization and construction quality during Roadbed Widening, settling amount is kept at least, to ensure the matter of highway
Amount.
The content of the invention
The present invention is directed to the above-mentioned problems in the prior art, there is provided a kind of construction method of highway broadening roadbed, energy
Enough settling amounts for effectively reducing widening road bed, prevent the generation in crack between new-old concrete bond.
For achieving the above object with some other purposes, the present invention is adopted the following technical scheme that：
A kind of construction method of highway broadening roadbed, mainly includes the following steps that：
Step 1.1, position need to be widened to former roadbed measure setting-out, mark and need to widen position, along the former roadbed side
Angle of slope is dug step by step and puts domatic, and the platform of domatic at different levels is successively decreased to lower width step by step by road surface, the domatic vertical height
Spend for 1-2 rice；
Step 1.2, on underlying platform along with the domatic parallel direction and with the domatic vertical direction difference
Squeeze into and the domatic length identical timber, until the top surface of the timber is concordant with the underlying platform；
Step 1.3, lay GSZ on the underlying platform；
Step 1.4, the GSZ higher slice lay gravelly soil, often lay 25-35 cm thicks gravelly soil it is laggard
Row compacting, until it reaches concordant with upper level platform surface；
Timber is squeezed into as described in step 1.2 on step 1.5, the platform described in step 1.4；
GSZ is laid on step 1.6, the platform described in step 1.4；
Step 1.7, repeat step 1.4-1.6, until pressure real surface is less than 5-10 centimetre of the former road bed；
Step 1.8, pressure real surface on lay stone fragment, be then densified to concordant with the former road bed.
Preferably, in the construction method of described highway broadening roadbed, the GSZ is fixed on institute by rivet
State on platforms at different levels.
Preferably, in the construction method of described highway broadening roadbed, the rivet is the GSZ contact
One end be provided with hook so that after the rivet hammers into platform by hook the GSZ is fixed.
Preferably, in the construction method of described highway broadening roadbed, the rivet hammers into the timber in the platform
In.
Preferably, in the construction method of described highway broadening roadbed, in the step 1.4, often it is compacted one layer of rubble
After soil, the loosened soil and residue of the pressure real surface are cleared up.
Preferably, in the construction method of described highway broadening roadbed, the GSZ is steel plastic geogrid.
Preferably, in the construction method of described highway broadening roadbed, in the compacting process, select vibrated roller
Coordinate with 18-20 tons three-roll road roller and be compacted.
The present invention at least includes following beneficial effect：In the construction method of the highway broadening roadbed of the present invention, by using
The side slope angle of former roadbed, is built domatic step by step so that widened section roadbed is successively overlap with former roadbed, strengthens new-old concrete bond
Between contact surface, effectively prevent the generation in crack between new-old concrete bond；By domatic width is from top to bottom set to pass step by step
Subtract so that the width of more deep layer widening road bed is narrower, i.e., soundness is higher step by step, so as to reduce the sedimentation of widening road bed
Amount；Squeezed into and domatic length identical timber by all intersecting on domatic at per grade so that timber is played to the roadbed newly widened
Certain supporting role, reduces the settling amount of roadbed；It is by GSZ is overlayed at per grade domatic, strong using GSZ
Degree is big, deforms little advantage, increased the combination of new-old concrete bond, increases joint portion shear resistance, prevents the sedimentation of new roadbed right
The destruction of old road base, so as to reach the effect of stable new-old concrete bond differential settlement so that the structure of new roadbed is more consolidated, and is entered
One step reduces the settling amount of roadbed；New roadbed is obtained by compaction in layers so that the compactness of roadbed is effectively improved,
In the case where compactness is improved, the settling amount of roadbed also just further reduces.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part will also be by originally
The research of invention and practice and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the structural representation of the construction method of the highway broadening roadbed that the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is elaborated, to make those of ordinary skill in the art refering to energy after this specification
It is enough to implement according to this.
As shown in figure 1, a kind of construction method of highway broadening roadbed, mainly includes the following steps that：
Step 1.1, position need to be widened to former roadbed measure setting-out, mark and need to widen position, along the former roadbed side
Angle of slope is dug the platform 2 put between domatic 1, and at different levels domatic 1 step by step and is successively decreased to lower width step by step by road surface, described domatic 1 hang down
Straight height is 1-2 rice；
Step 1.2, on underlying platform 2 along with the domatic 1 parallel direction and with the domatic 1 vertical direction point
Do not squeeze into and the domatic length identical timber 3, until the top surface of the timber 3 is concordant with the underlying platform 2；
Step 1.3, on the underlying platform 2 lay GSZ 4；
Step 1.4,4 higher slice of the GSZ lay gravelly soil 5, often lay 25-35 cm thicks gravelly soil after
It is compacted, until it reaches with 2 flush of upper level platform；
Timber 3 is squeezed into as described in step 1.2 on step 1.5, the platform 2 described in step 1.4；
GSZ 4 is laid on step 1.6, the platform 2 described in step 1.4；
Step 1.7, repeat step 1.4-1.6, until pressure real surface is less than 5-10 centimetre of the former road bed；
Step 1.8, pressure real surface on lay stone fragment 6, be then densified to concordant with the former road bed.
In the construction method of described highway broadening roadbed, the GSZ 4 is fixed on described at different levels flat by rivet
On platform 2.GSZ 4 is fixed by rivet so that the position of GSZ 4 will not be because of the operation of long-time vehicle
Pressure and be subjected to displacement, so as to improve the steadiness of whole widening road bed, it is to avoid subgrade settlement, affect making for whole highway
With.
In the construction method of described highway broadening roadbed, the rivet is that one end of the contact of the GSZ 4 sets
There is hook, so as to fix the GSZ 4 by hook after the rivet hammers into platform 2.Hook is added on rivet, is entered
One step strengthens fixation of the rivet to GSZ 4, extends the service life of roadbed.
In the construction method of described highway broadening roadbed, the rivet is hammered in the timber 3 in the platform 2.Rivet
Can also hammer in the timber 3 in platform 2, compared to hammering in the crushed stone soil layer that platform 2 has been compacted, alleviate work difficult
Degree, but the length because of timber 3 is identical with domatic 1 length, and timber 3 is squeezed in platform 2 completely, thus rivet can't be affected
The steadiness of fixed GSZ 4.
In the construction method of described highway broadening roadbed, in the step 1.4, after being often compacted one layer of gravelly soil 5, to institute
The loosened soil and residue for stating pressure real surface is cleared up.To cleaning soil layer surface after one layer of gravelly soil 5 of every compacting, it is to avoid because of void
The impact of soil and residue causes the compaction quality of next layer of crushed stone soil layer to be affected, that is, increase the bonding between crushed stone soil layer
Property, the steadiness of whole widening road bed has been correspondingly improved, the sedimentation of widening road bed has been effectively reduced.
In the construction method of described highway broadening roadbed, the GSZ 4 is steel plastic geogrid.The geotechnological lattice of steel modeling
Grid are made with high tensile steel wire, and intensity is big, the little, creep of deformation is little, corrosion-resistant, life-span length, therefore, steel plastic geogrid can meet
All kinds of permanent works use demand of more than 100 years, and performance is excellent, good stability of the dimension, and convenient and quick construction, cycle
Short, low cost, thus select steel plastic geogrid play good fixation to the roadbed widened, while low cost is applied
Work is convenient.
In the construction method of described highway broadening roadbed, vibrated roller and 18-20 tons in the compacting process, are selected
Three-roll road roller coordinates compacting.Vibrated roller wheelspan is wider and rolling speed is fast relative to three-roll road roller, particularly old road
The linking part of widened section, vibrated roller cannot be pressed onto at all, and this part can cause whole highway in the future to connect along new and old road
Longitudinal cracks at seam, affect the service life of whole highway, thus adopt after vibrated roller compacting, then use three-roll road roller
Roll, the mode for then being cooperated with this vibrated roller of vibrated roller vibroroller cmpacting and three-roll road roller again, it is ensured that
The compactness of per layer of widening road bed, so as to improve the compactness of whole roadbed, it is ensured that the quality of widening road bed.
Although embodiment of the present invention is disclosed as above, which is not restricted to listed by description and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and the legend with description herein shown.
Claims (7)
1. a kind of construction method of highway broadening roadbed, wherein, mainly include the following steps that：
Step 1.1, position need to be widened to former roadbed measure setting-out, mark and need to widen position, along the former roadbed side slope angle
Degree digs step by step and puts domatic, and the platform of domatic at different levels is successively decreased to lower width step by step by road surface, and the domatic vertical height is
1-2 rice；
Step 1.2, on underlying platform along being squeezed into the domatic parallel direction and with the domatic vertical direction respectively
With the domatic length identical timber, until the timber top surface it is concordant with the underlying platform；
Step 1.3, lay GSZ on the underlying platform；
Step 1.4, the GSZ higher slice lay gravelly soil, often lay 25-35 cm thicks gravelly soil after pressed
It is real, until it reaches concordant with upper level platform surface；
Timber is squeezed into as described in step 1.2 on step 1.5, the platform described in step 1.4；
GSZ is laid on step 1.6, the platform described in step 1.4；
Step 1.7, repeat step 1.4-1.6, until pressure real surface is less than 5-10 centimetre of the former road bed；
Step 1.8, pressure real surface on lay stone fragment, be then densified to concordant with the former road bed.
2. the construction method of highway broadening roadbed as claimed in claim 1, wherein, the GSZ is fixed on by rivet
On the platform at different levels.
3. the construction method of highway broadening roadbed as claimed in claim 2, wherein, the rivet is that the GSZ connects
Tactile one end is provided with hook, so as to be fixed the GSZ by hook after the rivet hammers into platform.
4. the construction method of highway broadening roadbed as claimed in claim 1 or 2, wherein, the rivet is hammered in the platform
Timber in.
5. the construction method of highway broadening roadbed as claimed in claim 1, wherein, in the step 1.4, be often compacted one layer it is broken
Shi Tuhou, clears up to the loosened soil and residue of the pressure real surface.
6. the construction method of highway broadening roadbed as claimed in claim 1, wherein, the GSZ is that steel moulds geotechnological lattice
Grid.
7. the construction method of highway broadening roadbed as claimed in claim 1, wherein, from vibration pressure road in the compacting process
Machine and 18-20 tons three-roll road roller coordinate compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986336.9A CN106522055B (en) | 2016-11-09 | 2016-11-09 | The construction method of highway broadening roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986336.9A CN106522055B (en) | 2016-11-09 | 2016-11-09 | The construction method of highway broadening roadbed |
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| CN106522055A true CN106522055A (en) | 2017-03-22 |
| CN106522055B CN106522055B (en) | 2017-11-17 |
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| CN201610986336.9A Expired - Fee Related CN106522055B (en) | 2016-11-09 | 2016-11-09 | The construction method of highway broadening roadbed |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648868A (en) * | 2016-02-02 | 2016-06-08 | 上海建工集团股份有限公司 | Splicing-widening construction method for road base |
| CN107386031A (en) * | 2017-09-04 | 2017-11-24 | 崔宇鹏 | The processing method of Expressway Extension Project joint portion |
| CN108316077A (en) * | 2018-02-08 | 2018-07-24 | 中交第二公路勘察设计研究院有限公司 | One kind underlies shallow embedding cave dwelling roadbed treatment structures and method |
| CN109024125A (en) * | 2018-08-29 | 2018-12-18 | 武钦培 | Permafrost area road widening of subgrade construction method |
| CN110846965A (en) * | 2019-10-15 | 2020-02-28 | 中国科学院武汉岩土力学研究所 | Method for reinforcing and widening roadbed of geocell based on conductive polymer |
| CN111910481A (en) * | 2020-08-22 | 2020-11-10 | 安徽祺泰建设工程有限公司 | Construction method for widening roadbed of highway |
| CN113355983A (en) * | 2021-06-29 | 2021-09-07 | 中国十九冶集团有限公司 | Compacting method and compacting equipment for new and old road lapped roadbeds |
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| FR2643402A1 (en) * | 1989-02-21 | 1990-08-24 | Perrin Jacques | Method for producing, from compacted household waste, a filling for filling in a pothole, and filling obtained |
| CN102619150A (en) * | 2012-04-26 | 2012-08-01 | 石家庄铁道大学 | Anchored roadbed widening method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648868A (en) * | 2016-02-02 | 2016-06-08 | 上海建工集团股份有限公司 | Splicing-widening construction method for road base |
| CN105648868B (en) * | 2016-02-02 | 2018-07-17 | 上海建工集团股份有限公司 | A kind of spelling width construction method of road base layer |
| CN107386031A (en) * | 2017-09-04 | 2017-11-24 | 崔宇鹏 | The processing method of Expressway Extension Project joint portion |
| CN108316077A (en) * | 2018-02-08 | 2018-07-24 | 中交第二公路勘察设计研究院有限公司 | One kind underlies shallow embedding cave dwelling roadbed treatment structures and method |
| CN109024125A (en) * | 2018-08-29 | 2018-12-18 | 武钦培 | Permafrost area road widening of subgrade construction method |
| CN109024125B (en) * | 2018-08-29 | 2020-11-24 | 五河县智凯环保科技有限公司 | Construction method for widening highway subgrade in frozen soil area |
| CN110846965A (en) * | 2019-10-15 | 2020-02-28 | 中国科学院武汉岩土力学研究所 | Method for reinforcing and widening roadbed of geocell based on conductive polymer |
| CN111910481A (en) * | 2020-08-22 | 2020-11-10 | 安徽祺泰建设工程有限公司 | Construction method for widening roadbed of highway |
| CN113355983A (en) * | 2021-06-29 | 2021-09-07 | 中国十九冶集团有限公司 | Compacting method and compacting equipment for new and old road lapped roadbeds |
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| Publication number | Publication date |
|---|---|
| CN106522055B (en) | 2017-11-17 |
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