CN109778629A - A kind of construction for preventing and treating the old and new road surface differential settlement - Google Patents
A kind of construction for preventing and treating the old and new road surface differential settlement Download PDFInfo
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- CN109778629A CN109778629A CN201811599716.2A CN201811599716A CN109778629A CN 109778629 A CN109778629 A CN 109778629A CN 201811599716 A CN201811599716 A CN 201811599716A CN 109778629 A CN109778629 A CN 109778629A
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Abstract
The present invention discloses a kind of construction for preventing and treating the old and new road surface differential settlement, using the structure of sleeper beam and pull rod cooperation, plays the role of underlay pull-up to new old road junction, specifically includes following construction procedure: 1) preparation of construction；2) roadbed is handled；3) sleeper beam, blinding concrete construction；4) old road plate bar planting；5) concrete slab is poured and is conserved.The present invention passes through sleeper beam+pull rod combination, play the role of " underlay pull-up " to the weak part (at least favorable stress) of New-old concrete road surface structare layer handover, ensure entire pavement structure entirety stress, the differential settlement for reducing the old and new's panel, effectively mitigates the appearance of the position top asphalt surface course reflection crack.
Description
Technical field
The present invention relates to a kind of constructions for preventing and treating the old and new road surface differential settlement, belong to concrete pavement construction neck
Domain.
Background technique
As country accelerates polishing town and country people's livelihood infrastructure short slab, major urban arterial highway " morning-night " reconstruction progress is significant,
In municipal old road reconstruction and extension project, former concrete road surface ties up wide construction and is increasingly concerned by people.It is general to use implantation reinforcing steel bar of pull rod
Or it is aided with the form of glass fiber grid, reduce the differential settlement on New-old concrete road surface, reduces top asphalt surface course reflection crack
Generation.Especially in the biggish section of vehicle flowrate, since seam is at least favorable stress, bar planting, glass in practice of construction
The single connectivity for considering the old and new's road deck such as grid and plate body, do not pay attention to the transmitting of power between base, roadbed sufficiently, cause to prevent
It is undesirable to control the old and new road surface differential settlement effect.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of constructions for preventing and treating the old and new road surface differential settlement
Engineering method, it is ensured that entire pavement structure entirety stress reduces the differential settlement of the old and new's panel, it is anti-effectively to mitigate top asphalt surface course
Penetrate the appearance in crack.
To achieve the goals above, a kind of construction for prevention and treatment the old and new road surface differential settlement that the present invention uses, is adopted
With the structure of sleeper beam and pull rod cooperation, plays the role of underlay pull-up to new old road junction, specifically includes following construction procedure:
1) preparation of construction；
2) roadbed is handled；
3) sleeper beam, blinding concrete construction；
4) old road plate bar planting；
5) concrete slab is poured and is conserved.
As an improvement, in the step 1) preparation of construction, check the concrete transport vehicle of investment construction, dump truck, excavator,
Road roller, concrete vibrating equipment, drilling device performance are normal, are able to satisfy normal construction demand；Bar planting reinforcing bar, template are done
Good site acceptance work, reinforcing bar rank, specification meet design requirement, and quality conforms to current standards.
As an improvement, after tying up broadband earth excavation to design altitude, being carried out at roadbed in step 2) the roadbed processing
Reason；The pit-hole occurred during earth excavation is backfilled in time using qualified filler；Roadbed compactness is met the requirements, and unqualified place is adopted
Qualified filler is taken change filling out.
As an improvement, in the construction of the step 3) sleeper beam, blinding concrete, comprising: plane digs sleeper beam pit slot；By plain concrete
Sleeper beam, plain concrete cushion layer pour simultaneously.
As an improvement, the size of the sleeper beam pit slot is 20cm*20cm~50cm*50cm.
As an improvement, the sleeper beam pit slot is set to the lower part of new old road junction, and plain concrete sleeper beam is longitudinally arranged.
As an improvement, on old road, the side of cement concrete layer opens up bar planting hole in step 4) the old road plate bar planting,
Bar planting hole horizontal spacing is 60cm, and aperture 20-21.5mm injects anchoring adhesive in bar planting hole, then will be through processing of rust removing mistake
Reinforcing bar be put into bar planting hole aperture, unidirectional to screw in, reinforcing bar is rotated to bottom hole；After bar planting adhesive curing is secured, with ZY-30 type digital display
Anchor rod drawing instrument inspects bar planting position by random samples in proportion.
As an improvement, the anchoring adhesive uses epoxy resin: curing agent is mixed to prepare according to the ratio of 100:5.
As an improvement, it is qualified to complete to detect through pulling capacity to bar planting during the step 5) concrete slab pours and conserve
Afterwards, that is, pouring for new road cement concrete layer is carried out.
Compared with prior art, the beneficial effects of the present invention are:
1) construction of the invention overcomes in conventional pav widening treatment, to surface layer structure differential settlement below
Control insufficient disadvantage.
2) technique overcomes in traditional construction, overlays TGXG in concrete slab and anchors requirement height, flatness is not
The shortcomings that preferably controlling.
3) present invention process is used, the disturbance to old road structure sheaf can be reduced to greatest extent, and be not necessarily to the external energy,
Noise is small, and dust is few, energy conservation and environmental protection.
4) present invention process is used, does not need to save equipment depreciation, spare parts consumption using excessive heavy mechanical equipment
And grid electricity fee cost；The technological operation is simple, guarantees to reduce earth excavation and outer abandoning amount, save the cost while quality.
Detailed description of the invention
Fig. 1 is construction process figure of the invention；
Fig. 2 is sleeper beam+drawbar structure diagram in the present invention；
In figure: 1, old road cement concrete layer, 2, reinforcing steel bar of pull rod, 3, new old road junction, 4, asphalt concrete pavement, 5,
New road cement concrete layer, 6, plain concrete cushion layer, 7, roadbed, 8, plain concrete sleeper beam.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention is carried out below further detailed
It describes in detail bright.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, it is not limited to this hair
Bright range.
Unless otherwise defined, all technical terms and scientific terms used herein are led with technology of the invention is belonged to
The normally understood meaning of the technical staff in domain is identical, and term as used herein in the specification of the present invention is intended merely to retouch
State the purpose of specific embodiment, it is not intended that in the limitation present invention.
As shown in Figure 1 and Figure 2, a kind of construction for preventing and treating the old and new road surface differential settlement, is cooperated using sleeper beam and pull rod
Structure, the structure specifically: including old road cement concrete layer 1, the old road cement concrete layer 1 is mounted on roadbed 7,
It further include asphalt concrete pavement 4, new road cement concrete layer 5 and plain concrete cushion layer 6；
The new road cement concrete layer 5 and plain concrete cushion layer 6 are from top to bottom successively laid on roadbed 7, and new road
Cement concrete layer 5 and plain concrete cushion layer 6 are connect with old road cement concrete layer 1；The plain concrete cushion layer 6 and old road
The junction lower part of cement concrete layer 1 is equipped with plain concrete sleeper beam 8, and the plain concrete sleeper beam 8 is located on roadbed 7, and element
Concrete sleeper beam 8 is longitudinally arranged along new old road junction 3；
The reinforcing steel bar of pull rod of lateral arrangement is installed between the old road cement concrete layer 1 and Xin Lu cement concrete layer 5
2, asphalt concrete pavement 4 is installed on the old road cement concrete layer 1 and Xin Lu cement concrete layer 5；
Specifically include following construction procedure:
1) preparation of construction；
2) roadbed is handled；
3) sleeper beam, blinding concrete construction；
4) old road plate bar planting；
5) concrete slab is poured and is conserved.
As the improvement of embodiment, in the step 1) preparation of construction, concrete transport vehicle, the self-unloading vapour of investment construction are checked
Vehicle, excavator, road roller, concrete vibrating equipment, drilling device performance are normal, are able to satisfy normal construction demand；Bar planting is used
Reinforcing bar, template carry out site acceptance work, and reinforcing bar rank, specification meet design requirement, and quality conforms to current standards.
As the improvement of embodiment, in step 2) the roadbed processing, after tying up broadband earth excavation to design altitude, into
The processing of walking along the street bed；The pit-hole occurred during earth excavation is backfilled in time using qualified filler；Roadbed compactness should be met the requirements,
Qualified filler is taken change filling out in unqualified place.
As the improvement of embodiment, in the step 3) sleeper beam, blinding concrete construction, comprising: plane digs sleeper beam pit slot；It will
Plain concrete sleeper beam, plain concrete cushion layer pour simultaneously.
As the improvement of embodiment, the size (wide * high) of the sleeper beam pit slot is 20cm*20cm~50cm*50cm.
As the improvement of embodiment, the sleeper beam pit slot is set to the lower part of new old road junction 3, and plain concrete sleeper beam 8
It is longitudinally arranged.
As the improvement of embodiment, in step 4) the old road plate bar planting, on old road, the side of cement concrete layer 1 is opened
If bar planting hole, bar planting hole horizontal spacing is 60cm, and aperture 20-21.5mm injects anchoring adhesive in bar planting hole, then will be through removing
The processed reinforcing bar that becomes rusty is put into bar planting hole aperture, unidirectional to screw in, and reinforcing bar is rotated to bottom hole；After bar planting adhesive curing is secured, ZY- is used
30 type digital display anchor rod drawing instruments inspect bar planting position by random samples in proportion.
As the improvement of embodiment, the anchoring adhesive uses epoxy resin: curing agent mixes system according to the ratio of 100:5
?.
As the improvement of embodiment, during the step 5) concrete slab is poured and conserved, complete to bar planting through pulling capacity
After detection is qualified, that is, carry out new road cement concrete layer 5, asphalt concrete pavement 4 pours.
Embodiment 1
A kind of construction for preventing and treating the old and new road surface differential settlement, specifically includes following construction procedure:
1) preparation of construction:
1.1) according to on-site actual situations, implementation arrangement and method for construction is worked out, worker is pacified according to the scheme after approval
It confides a technological secret entirely；
1.2) concrete transport vehicle, dump truck, excavator, the road roller, concrete vibrating equipment, drilling of investment construction are checked
The performances such as equipment are normal, are able to satisfy normal construction demand；
1.3) site acceptance work is carried out to materials such as bar planting reinforcing bar, templates, reinforcing bar rank, specification have to comply with design
It is required that quality conforms to current standards.Rebar surface should keep cleaning, non-corroding and greasy dirt；
2) roadbed is handled:
2.1) after tying up broadband earth excavation to design altitude, necessary roadbed processing is carried out, it is ensured that roadbed compactness, carrying
Power；
2.2) surface dust on roadbed, sundries are all removed, and the obvious pit-hole occurred during earth excavation is filled out using qualification
Material backfill in time；
2.3) roadbed compactness meet design and code requirement, unqualified place take it is necessary change the measure of filling out, change and fill out qualification
Filler；
3) sleeper beam, blinding concrete construction:
3.1) roadbed processing meet design and code requirement after, by design drawing requirement (generally 20cm*20cm~
50cm*50cm) plane digs sleeper beam pit slot, takes the small artificial plane of digging cooperation to dig, control is excavated linear；
3.2) it repetition measurement groove dimensions and applies for checking and examination, carries out next process construction after qualified, to guarantee sleeper beam concrete vibrating
Sufficiently, it is ensured that the connection of compactness and sleeper beam and old road concrete floor, simultaneously by plain concrete sleeper beam 8, plain concrete cushion layer 6
It pours；
3.3) it is vibrated using plug-in type vibrating stick to the concrete poured, the mobile spacing of vibrating spear is no more than vibrator
1.5 times of operating radius, everywhere, which answers to blow slowly in vibration after vibrating, proposes vibrating head, to each vibration position, vibration
Until the position is closely knit, closely knit mark is that concrete stops sinking, and flat, bleeding is presented in bubble of no longer emerging, surface；
4) old road plate bar planting:
4.1) whether inspection is intact by reinforcement planting concrete surface before bar planting, marks out bar planting hole site, by single long by plant
Muscle is formed with steel bar meter；
4.2) bar planting uses screw-thread steel with reinforcing bar, uses diamond drill machine by design and code requirement aperture according to rebar sizes
Hole machine carries out aperture；
4.3) using floating dust sundries in air compressor machine blowout hole, it is equipped with metal hairbrush, borehole cleaning accomplishes " four, which blow three, sweeps ", it is ensured that hole
It is interior dustless, clean dried；
4.4) the A grade glue that anchoring adhesive is met the requirements using tensile splitting strength, bending strength, compression strength, using injecting glue
Rifle carries out bar planting hole injecting glue, and the bottom in stirring-head insertion hole is started injecting glue when injecting glue, is gradually displaced outwardly, in order to plant reinforcing bar
It is full to enter glue in metapore, and glue cannot be made to outflow, until filling the 2/3 of pore volume；
Wherein, the tensile splitting strength of bar planting glue, bending strength, compression strength meet design requirement such as the following table 1.
The requirement of 1 bar planting glue of table
4.5) reinforcing bar implant part is brushed before bar planting repeatedly with wire brush, rust dirt is removed, after having infused glue in drilling, warp
The reinforcing bar that processing of rust removing is crossed is immediately placed in aperture, then slowly unidirectional to screw in, can not midway inversely invert, reinforcing bar be rotating until
Reinforcing bar protrudes into bottom hole；
4.6) after bar planting adhesive curing is secured, bar planting position is inspected by random samples in proportion with ZY-30 type digital display anchor rod drawing instrument；
5) concrete slab is poured and is conserved:
5.1) bar planting is completed to carry out pouring for new road cement concrete layer 5 after pulling capacity detection is qualified；
5.2) before new road cement concrete layer 5 pours, sundries, the rubbish etc. at 6 top of thorough cleaning plain concrete cushion layer, and
Watering is wet, but must not have ponding；
5.3) concreting is completed to start health after initial set, is covered using geotextiles, sprinkling maintenance, keeps coagulation
Native surface is in moisture state always；
5.4) tissue asphalt concrete pavement 4 is constructed after slab strength reaches design and code requirement.
Quality control in above-mentioned construction is as follows:
Meet the requirement of " urban road engineering construction and inspection of quality specification " (CJJ1-2008)；
Bar planting construction meets the requirement of " building structure strengthening engineering construction quality acceptance specification " (GB 50550-2010)；
Bar planting pulling capacity meets design and code requirement；
Construction concrete properties meet " Standard for quality control of concrete " (GB50164-2011) requirement.
Specific application example
Jingxian County The Peach Blossom Pond Road (sport road to wealth main road) improvement project, west from sport road, to the east of wealth main road, therebetween
Successively intersect with Meteorological Channel, Zhongshan Road, traffic road, the South Road Jia Xiang, Jingchuan main road, Li Cunlu, overall length 2647.07m, designs speed per hour
40km/h.Wherein sport road~traffic road (K0+000~K0+889.971), Jingchuan main road~wealth main road (K1+920~K2+
647.07) it is handled using existing runway " morning-night ", widens two width car lanes.Using " sleeper beam+pull rod " form to the old and new
Road connecting portion is handled, and sleeper beam uses 50cm*50cmC20 plain concrete, and reinforcing steel bar of pull rod is (single using 16 spiral of φ
Long 70cm, implantation depth 30cm), application length 3234m.
It is domestic that G206 (Shucheng County section) reconstruction project project is located at Shucheng County, project to north orientation connect Anhui Province understand Hefei City, to
South to Anqing is Shucheng County and the important carrier of small towns traffic trip along the line, road overall length 23.1km.Wherein create section (K11
+ 900~K23+150) the long 11.25km of route, the long 11.85km of old roads reconstruction section (K23+150~K35+000) route.Old road changes
Duan Caiyong " sleeper beam+pull rod " form to be made to handle new old road connecting portion, sleeper beam uses 30cm*40cmC20 plain concrete,
Reinforcing steel bar of pull rod uses 22 spiral of φ (single long 80cm, implantation depth 40cm), application length 23.7km.
In the old and new's road surface structare layer (base), plain concrete sleeper beam 8 is arranged in connecting portion to the present invention along longitudinal direction below, simultaneously
Cement concrete layer 1 side in old road sets reinforcing steel bar of pull rod 2 using bar planting mode and connect with new road cement concrete layer 5, and sleeper beam is not only
It plays a supportive role, and transmits upper load and cooperatively form a whole important relation point with reinforcing steel bar of pull rod.Pass through " sleeper beam
+ pull rod " combination plays " on underlay the weak part of New-old concrete road surface structare layer handover (at least favorable stress)
Draw " effect, it is ensured that entire pavement structure entirety stress reduces the differential settlement of the old and new's panel, effectively mitigates the position top
The appearance of asphalt surface course reflection crack.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of construction for preventing and treating the old and new road surface differential settlement, which is characterized in that using the knot of sleeper beam and pull rod cooperation
Structure plays the role of underlay pull-up to new old road junction, specifically includes following construction procedure:
1) preparation of construction；
2) roadbed is handled；
3) sleeper beam, blinding concrete construction；
4) old road plate bar planting；
5) concrete slab is poured and is conserved.
2. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 1, which is characterized in that described
In step 1) preparation of construction, check that concrete transport vehicle, dump truck, excavator, road roller, the concrete vibrating of investment construction are set
It is standby, drilling device performance is normal, be able to satisfy normal construction demand；Site acceptance work, reinforcing bar are carried out to bar planting reinforcing bar, template
Rank, specification meet design requirement, and quality conforms to current standards.
3. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 1, which is characterized in that described
Step 2) roadbed processing in, after tying up broadband earth excavation to design altitude, carry out roadbed processing；Occur during earth excavation
Pit-hole backfilled in time using qualified filler；Roadbed compactness is met the requirements, and unqualified place takes qualified filler change filling out.
4. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 1, which is characterized in that described
In step 3) sleeper beam, blinding concrete construction, comprising: plane digs sleeper beam pit slot；Simultaneously by plain concrete sleeper beam, plain concrete cushion layer
It pours.
5. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 4, which is characterized in that described
The size of sleeper beam pit slot is 20cm*20cm~50cm*50cm.
6. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 4 or 5, which is characterized in that
The sleeper beam pit slot is set to the lower part of new old road junction (3), and plain concrete sleeper beam (8) is longitudinally arranged.
7. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 1, which is characterized in that described
In the plate bar planting of step 4) old road, on old road, the side of cement concrete layer (1) opens up bar planting hole, and bar planting hole horizontal spacing is
60cm, aperture 20-21.5mm inject anchoring adhesive in bar planting hole, and the reinforcing bar crossed through processing of rust removing is then put into bar planting hole
Aperture, unidirectional to screw in, reinforcing bar is rotated to bottom hole；After bar planting adhesive curing is secured, with ZY-30 type digital display anchor rod drawing instrument to bar planting
It inspects by random samples in proportion at position.
8. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 7, which is characterized in that described
Anchoring adhesive uses epoxy resin: curing agent is mixed to prepare according to the ratio of 100:5.
9. a kind of construction for preventing and treating the old and new road surface differential settlement according to claim 1, which is characterized in that described
During step 5) concrete slab is poured and conserved, complete to carry out new road coagulating cement after pulling capacity detection is qualified after bar planting
Soil layer (5) pour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599716.2A CN109778629A (en) | 2018-12-26 | 2018-12-26 | A kind of construction for preventing and treating the old and new road surface differential settlement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599716.2A CN109778629A (en) | 2018-12-26 | 2018-12-26 | A kind of construction for preventing and treating the old and new road surface differential settlement |
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| CN109778629A true CN109778629A (en) | 2019-05-21 |
Family
ID=66498469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811599716.2A Pending CN109778629A (en) | 2018-12-26 | 2018-12-26 | A kind of construction for preventing and treating the old and new road surface differential settlement |
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| CN102296502A (en) * | 2011-06-03 | 2011-12-28 | 天津住宅集团建设工程总承包有限公司 | Post construction method of automobile ramp near building |
| CN205368937U (en) * | 2016-01-14 | 2016-07-06 | 郑州大学 | Reinforced structure of impaired concrete road surface panel |
| CN108301273A (en) * | 2018-01-30 | 2018-07-20 | 福建省地质工程勘察院 | The fore-telling shaped pile anchor structure and its construction method of guardrail reinforcing integrated with roadbed |
| CN109057338A (en) * | 2018-08-17 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of post-cast strip anti-cracking waterproof construction method |
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2018
- 2018-12-26 CN CN201811599716.2A patent/CN109778629A/en active Pending
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|---|---|---|---|---|
| DE102004020743A1 (en) * | 2004-04-27 | 2006-05-18 | Josef Scherer | Pavement surface construction for traffic areas and foundation surfaces has bracing elements partially consisting viscoplastic bonding material, connected with grating and firmly bonded with a part of road bed or superstructure |
| CN102296502A (en) * | 2011-06-03 | 2011-12-28 | 天津住宅集团建设工程总承包有限公司 | Post construction method of automobile ramp near building |
| CN205368937U (en) * | 2016-01-14 | 2016-07-06 | 郑州大学 | Reinforced structure of impaired concrete road surface panel |
| CN108301273A (en) * | 2018-01-30 | 2018-07-20 | 福建省地质工程勘察院 | The fore-telling shaped pile anchor structure and its construction method of guardrail reinforcing integrated with roadbed |
| CN109057338A (en) * | 2018-08-17 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of post-cast strip anti-cracking waterproof construction method |
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