CN206553851U - roadbed widening structure - Google Patents
roadbed widening structure Download PDFInfo
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- CN206553851U CN206553851U CN201720075908.8U CN201720075908U CN206553851U CN 206553851 U CN206553851 U CN 206553851U CN 201720075908 U CN201720075908 U CN 201720075908U CN 206553851 U CN206553851 U CN 206553851U
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Abstract
The utility model is related to a kind of roadbed widening structure, and roadbed widening structure mainly includes prefabricated side plate, prefabricated assembled lateral plate, cast-in-place concrete bottom plate and bubble concrete backfill layer；The interface side slope of former roadbed and new roadbed is set to step-like, and prefabricated side plate is arranged at cast-in-place concrete base tub both sides, is fixed by side plate soil nailing with lower curing soil layer and original place table；Prefabricated assembled lateral plate is arranged on side plate rib block, and both sides are respectively arranged with oblique auxiliary outer strut and horizontal internal overarm support, are internally provided with vertical prestressed reinforcement, bottom is provided with junction steel plate；New roadbed backfill layer delays slag backfill layer by top and cellular concrete backfill layer in bottom is constituted, and transverse steel mesh sheet is set at step in cellular concrete backfill layer.The utility model, which not only increases the fixed effect between new roadbed and former roadbed and is connected, agrees with intensity, also enhances the intensity and roadbed side slope stability of new roadbed.
Description
Technical field
The utility model is related to a kind of roadbed widening structure, belongs to road construction technical field, for solving existing roadbed
The problems such as free settling present in widened structure, sliding, it is adaptable to the Widening Construction of existing embankment.
Background technology
With national economy and life, the trip side of the fast-developing of society, the change of regional economy, and the people
The change of formula, original standard path can not meet the demand for development of Modern Traffic, and a large amount of local roads need upgrading.
But the structure and its construction technology of road widening now frequently result in road surface and excessive differential settlement, pavement cracking, office occur
The diseases such as portion's depression, itself main reason is that：
（1）New and old roadbed is widened binding site roadbed material and road surface structare layer thickness, intensity after processing and differed, particularly
While newly to do roadbed, while being original old road base, quality produces a critical surface in binding site, is there is also difference
Road cracking leaves hidden danger.
（2）New and old roadbed is widened after processing, is differed in binding site settling amount, produces certain sedimentation difference, particularly
New widening subgrade settlement after construction is larger, and old road base has been completed suitable settlement amount after construction, so inevitably in knot
Close position and produce a differential settlement value mutation point, the main cause in crack is produced as road.
（3）New and old roadbed binding site technique is more complicated, and difficulty of construction is larger, often produce herein artificial quality because
Element, such as compactness do not reach design standard, be also produce crack the reason for one of.
It can be seen that above mentioned problem has had a strong impact on the quality after road widening and service life, in consideration of it, needing invention badly at present
A kind of new roadbed widening structure and construction method, with advantages below：
（1）The settling amount of new widening subgrade and the differential settlement of new and old roadbed are small.
（2）The foundation stability of new and old roadbed binding site is good, to solve the reflection produced by the differential settlement of new and old roadbed
Crack.
（3）The bond strength of new and old roadbed is high, and new and old roadbed is mitigated because of the difference of material, quality and road surface structare layer with this
Harm Deng produced by.
The utility model uses prefabricated side plate and prefabricated assembled lateral plate, and efficiency of construction is high, and new roadbed backfills layer by upper
Portion is delayed slag backfill layer and bottom cellular concrete backfill layer composition, and transverse steel is set at step in cellular concrete backfill layer
Mesh sheet, effectively improves the fixed effect between new roadbed and former roadbed and is connected and agree with intensity, also enhance the intensity of new roadbed
And roadbed side slope stability, with preferable economic technology benefit.
The content of the invention
The purpose of this utility model is the fixed effect provided between a kind of new roadbed and former roadbed and is connected to agree with strong
Degree is high, the good roadbed widening structure of new roadbed side slope stability.
To realize above-mentioned technical purpose, the utility model employs following technical scheme：
A kind of roadbed widening structure, it is characterised in that the roadbed widening structure mainly includes prefabricated side plate, prefabrication and assembly construction
The lateral plate of formula, cast-in-place concrete bottom plate and bubble concrete backfill layer；The interface side slope of former roadbed and new roadbed is set to platform
Scalariform, prefabricated side plate is arranged at cast-in-place concrete base tub both sides, solid by side plate soil nailing and lower curing soil layer and original place table
It is fixed；Prefabricated assembled lateral plate is arranged on side plate rib block, and both sides are respectively arranged with oblique auxiliary outer strut and horizontal internal overarm support,
Vertical prestressed reinforcement is internally provided with, bottom is provided with junction steel plate；New roadbed backfill layer by top delay slag backfill layer and under
Transverse steel mesh sheet is set at step in portion's cellular concrete backfill layer composition, cellular concrete backfill layer.
Further, described prefabricated side plate is made up of prefabricated Z-shaped side plate and prefabricated L-shaped side plate, two kinds of prefabricated side plate sides
Wall is provided with tenon, and side plate bottom, which is extended, rectangular-shape rib block, and phase is reserved at the top of rib block and prefabricated Z-shaped side plate
Auxiliary outer strut groove is also reserved at the top of the soil nailing hole of same specification, prefabricated Z-shaped side plate.
Described prefabricated assembled lateral intralamellar part is reserved in grouting channel, grouting channel and is provided with vertical prestressed reinforcement
And post-grouting occluding body, vertical prestressed reinforcement bottom and junction steel plate anchored, and reinforced hole is provided with junction steel plate.
Length adjustment device is provided with described oblique auxiliary outer strut and horizontal internal overarm support, wherein horizontal internal overarm support
One end is connected with prefabricated assembled lateral plate, and the other end is connected with the screw shell of U-shaped steel hoop on former barricade, U-shaped steel hoop
It is hinged and is formed by three blocks of steel plates, with is anchored at the top of former barricade by bolt.
The bottom junction steel plate of described cast-in-place concrete bottom parts vertical reinforcement through prefabricated assembled lateral plate is tied up
Prick, pour rear top mark high identical with prefabricated side plate top mark height.
Described cellular concrete backfill layer and top are delayed between slag backfills layer and are provided with waterproof geotextiles, its inner transverse
Reinforced mesh one end is connected with prefabricated assembled lateral plate, and the other end is fixed by mesh sheet soil nailing.
The construction method of above-mentioned roadbed widening structure, its key step is as follows：
Step one：Former road excavation finishing：Remove the fertile soil of former road bed first, in former roadbed and will lay
The interface of new roadbed repairs out step-like side slope；
Step 2：Solidify soil layer construction：In new roadbed and original place table handover region, the soil body is manually or mechanically excavated, by soil
Backfill paves and is compacted after body mix soil-solidified-agent, forms solidification soil layer；
Step 3：Prefabricated side plate is installed：Concrete bottom board slot, groove are first excavated out on solidification soil layer top according to design drawing
Prefabricated side plate is installed after mouth finishing, prefabricated L-shaped side plate, the prefabricated Z-shaped side plate of opposite side installation, two avris are installed close to original barricade side
The rib block end part aligning of plate bottom extension is simultaneously close to, and is fixed while installing soil nailing；
Step 4：Prefabricated assembled lateral plate construction：Before prefabricated assembled lateral plate is installed, pacify in advance at the top of former barricade
U-shaped steel hoop is filled, then is lifted prefabricated assembled lateral plate to prefabricated side plate rib block using crane, by installing oblique auxiliary
Outer strut and horizontal internal overarm support keep perpendicularity, are subsequently mounted vertical prestressed reinforcement, timely perfusion mortar after tensioning, and will be perpendicular
Anchored to deformed bar；
Step 5：Cast-in-place concrete construction of bottom plates：According to design requirement colligation baseplate reinforcing bar, part vertical reinforcement is through in advance
The lateral plate bottom junction steel plate of assembled processed, casting concrete is to designed elevation after the completion of colligation, and conserves；
Step 6：Cellular concrete backfill layer construction：Cellular concrete uses back-filling in layers, often fills the laying of one-level step
One layer of transverse steel mesh sheet is until designed elevation, transverse steel mesh sheet is fixed using mesh sheet soil nailing；
Step 7：Slag of delaying backfill layer construction：Before slag of delaying backfill, anti-water and soil is laid in cellular concrete backfill layer top surface in advance
Work cloth, then designed elevation is backfilled to, and in the pre-buried prefabricated lamp socket of design attitude, slag of delaying backfill layer side slope laying ecological grass mat.
Step 8：Road surface and supporting setting construction：According to design requirement carry out road surfacing, and install street lamp, guardrail and
Auxiliary facility.
The characteristics of the utility model has following and beneficial effect：
（1）The prefabricated assembled lateral plate that the utility model is related to can be lifted directly, compared to cast-in-place Retaining wall efficiency
Greatly improve, and both sides are respectively arranged with oblique auxiliary outer strut and horizontal internal overarm support, improve in construction and work rear stability, and
The junction steel plate set by bottom is strengthened being connected with cast-in-place bottom plate, can further improve the intensity of new roadbed.
（2）The construction of cast-in-place concrete bottom plate is simplified and applied directly using prefabricated side plate as template in the utility model
Work process, while prefabricated side plate is again as the cushion block of prefabricated assembled lateral plate, lateral plate can still make underplate concrete after installing
Pour fully, with preferable technical benefits.
（3）The interface side slope of the utility model Central Plains roadbed and new roadbed is set to step-like, and new roadbed is mainly used
Cellular concrete is backfilled, and is respectively provided with reinforced mesh at every layer of step during back-filling in layers, effectively improves new and old roadbed joint portion
The foundation stability of position.
Brief description of the drawings
Fig. 1 is roadbed widening structural representation；
Fig. 2 is the lateral plate installation top view of assembled before cast-in-place construction of bottom plates；
Fig. 3 is A-A profiles in Fig. 2.
In figure：1- central partitions；2- car lanes；3- street lamps；The prefabricated lamp sockets of 4-；5- bicycle lanes；6- guardrails；7-
Ecological grass mat bank protection；8- crab-bolts；The prefabricated assembled lateral plates of 9-；10- post-grouting occluding bodies；11- vertical prestressed reinforcements；12-
Slag of delaying backfills layer；13- waterproof geotextiles；14- mesh sheet soil nailings；15- transverse steel mesh sheet；16- cellular concretes backfill layer；17-U
Shape steel hoop；18- bolts；19- original barricades；The horizontal internal overarm supports of 20-；The oblique auxiliary outer struts of 21-；22- outer strut adjusting meanss；
23- cast-in-place concrete bottom plates；The prefabricated Z-shaped side plates of 24-；25- side plate soil nailings；26- original places table；27- side plate rib blocks；28- solidified earths
Layer；29- inner support post adjustment mechanisms；30- screw shells；The prefabricated L-shaped side plates of 31-；32- junction steel plates；33- reinforced holes；34- coagulations
Native base tub.
Embodiment
Fig. 1 is roadbed widening structural representation, and Fig. 2 is the lateral plate installation top view of assembled, Fig. 3 before cast-in-place construction of bottom plates
It is A-A profiles in Fig. 2.Referring to the drawings shown roadbed widening structure, mainly by prefabricated side plate, prefabricated assembled lateral plate 9,
The compositions such as cast-in-place concrete bottom plate 23, cellular concrete backfill layer 16.
The interface side slope of former roadbed and new roadbed is set to step-like, and prefabricated side plate is arranged at cast-in-place concrete base tub
34 both sides, are fixed by side plate soil nailing 25 with lower curing soil layer 28 and original place table 26；Prefabricated assembled lateral plate 9 is arranged at side
On rib of slab block 27, both sides are respectively arranged with oblique auxiliary outer strut 21 and horizontal internal overarm support 20, are internally provided with vertical prestressing
Reinforcing bar 11, bottom is provided with junction steel plate 32；New roadbed backfill layer delays slag backfill layer 12 by top and bottom cellular concrete is returned
Packing course 16 is constituted, and transverse steel mesh sheet 15 is set at step in cellular concrete backfill layer 16.
Prefabricated side plate is made up of prefabricated Z-shaped side plate 24 and prefabricated L-shaped side plate 31, and two kinds of prefabricated side plate side walls are provided with convex
Tenon, side plate bottom, which is extended, rectangular-shape rib block, the soil of the reserved same size of rib block and the top of prefabricated Z-shaped side plate 24
Also reserve auxiliary outer strut groove in nail, the prefabricated Z-shaped top of side plate 24.
Be provided with the prefabricated assembled internal reservation grouting channel of lateral plate 9, grouting channel vertical prestressed reinforcement 11 and
Post-grouting occluding body 10, the bottom of vertical prestressed reinforcement 11 is anchored with junction steel plate 32, and reinforced hole is provided with junction steel plate 32
33。
Outer strut adjusting means 22 is provided with oblique auxiliary outer strut 21；Internal overarm support tune is provided with horizontal internal overarm support 20
Regulating device 29.Horizontal one end of internal overarm support 20 is connected with prefabricated assembled lateral plate 9, the other end and U-shaped steel hoop on former barricade 19
17 screw shell 30 is connected, and U-shaped steel hoop 17 is hinged by three blocks of steel plates and formed, and is anchored with the former top of barricade 19 by bolt.
The bottom junction steel plate 32 of the part vertical reinforcement of cast-in-place concrete bottom plate 23 through prefabricated assembled lateral plate 9 is tied up
Prick, pour rear top mark high identical with prefabricated side plate top mark height.
Cellular concrete backfills layer 16 and top is delayed between slag backfills layer 12 and is provided with waterproof geotextiles 13, its inner transverse
The one end of reinforced mesh 15 is connected with prefabricated assembled lateral plate 9, and the other end is fixed by mesh sheet soil nailing 14.
Before construction, excavation finishing first is carried out to former roadbed, the fertile soil of former road bed is removed, manually or mechanically in original
The interface of roadbed and the new roadbed that will be laid repairs out step-like side slope, and the width of step is not less than 100mm, and height does not surpass
Cross 300mm.After slope trimming, according to design drawing in new roadbed and original place table handover region, manually or mechanically excavated along slope
The soil body, backfill after soil body mix slag portland firming agent for soil is paved and is compacted, form thickness 1200mm solidification soil layer
28。
After solidification soil layer maintain, wide 1000mm, depth 500mm are excavated out solidifying soil layer 28 top according to design drawing
Concrete bottom board slot 34, prefabricated side plate is installed after notch finishing, and prefabricated L-shaped side plate 31, opposite side are installed close to original barricade 19 side
Prefabricated Z-shaped side plate 24 is installed, two kinds of side plate height are 550mm, and thickness is 50mm, and wide bottom is 200mm, and rib block length is
300mm, wherein a width of 300mm in the top of prefabricated Z-shaped side plate 24, after installation, the rib block end part aligning of both sides side plate bottom extension is simultaneously
It is close to, is fixed while installing soil nailing.
Before prefabricated assembled lateral plate 9 is installed, U-shaped steel hoop 17, U-shaped steel hoop 17 are installed at the former top of barricade 19 in advance
Customized, anchored using M6 types expansion bolt according to former barricade top dimension, the one side of U-shaped steel hoop 17 is according in design drawing welding
Footpath 20mm screw shell 30.Then high 2000mm, wide 200mm prefabricated assembled lateral plate 9 are lifted to pre- using crane
On side plate rib block 27 processed, its perpendicularity is kept by the oblique auxiliary outer strut 21 and horizontal internal overarm support 20 of installing diameter 20mm,
Diameter 15mm HRB335 vertical prestressed reinforcements 11 are then installed in lateral board diameter 30mm vertical preformed hole, reinforcing bar with
Tensioning in time after bottom junction steel plate 32 is anchored, and M7.5 mortars are irrigated, then the upper end of vertical prestressed reinforcement 11 is anchored.
After prefabricated assembled lateral plate 9 is installed, according to design requirement colligation baseplate reinforcing bar, part vertical reinforcement passes through prefabricated
The lateral bottom junction steel plate 32 of plate 9 of assembled, colligation completes after-pouring C30 concrete to designed elevation, and conserves.
New roadbed uses density rating for 800kg/m3Cellular concrete back-filling in layers, often fill one-level step laying one
Layer transverse steel mesh sheet 15 is until prefabricated assembled lateral plate top mark is high, and transverse steel mesh sheet 15 is fixed using mesh sheet soil nailing 14.
Then slag backfill of delaying is carried out, in advance in cellular concrete backfill layer 16 top surface laying waterproof geotextiles 13 before slag of delaying backfill, then is returned
Designed elevation is filled to, and in the pre-buried prefabricated lamp socket 3 of design attitude, slag of delaying backfill layer 12 side slope laying ecological grass mat.
After the completion of above-mentioned construction, road surfacing is carried out according to design requirement, and the auxiliary facilities such as street lamp 3, guardrail 6 are installed.
A kind of roadbed widening structure that the utility model is provided is described in detail above.The explanation of specific embodiment
It is only intended to help and understands method of the present utility model and its core concept.It should be pointed out that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvement can also be carried out to the utility model and are repaiied
Decorations, these are improved and modification is also fallen into the utility model scope of the claims.
Claims (6)
1. a kind of roadbed widening structure, it is characterised in that the roadbed widening structure mainly includes prefabricated side plate, prefabricated assembled
Lateral plate（9）, cast-in-place concrete bottom plate（23）With bubble concrete backfill layer（16）；The interface side slope of former roadbed and new roadbed
It is set to step-like, prefabricated side plate is arranged at cast-in-place concrete base tub（34）Both sides, pass through side plate soil nailing（25）It is solid with bottom
Change soil layer（28）And original place table（26）It is fixed；Prefabricated assembled lateral plate（9）It is arranged at side plate rib block（27）On, both sides are set respectively
It is equipped with oblique auxiliary outer strut（21）And horizontal internal overarm support（20）, it is internally provided with vertical prestressed reinforcement（11）, bottom is set
There is junction steel plate（32）；New roadbed backfill layer is delayed slag backfill layer by top（12）And bottom cellular concrete backfill layer（16）Group
Into cellular concrete backfill layer（16）Transverse steel mesh sheet is set at interior step（15）.
2. roadbed widening structure according to claim 1, it is characterised in that described prefabricated side plate is by prefabricated Z-shaped side plate
（24）With prefabricated L-shaped side plate（31）Composition, two kinds of prefabricated side plate side walls are provided with tenon, and side plate bottom, which is extended, length
Cube shape rib block, rib block and prefabricated Z-shaped side plate（24）Reserve the soil nailing hole of same size, prefabricated Z-shaped side plate in top（24）Top
Also reserve auxiliary outer strut groove in portion.
3. roadbed widening structure according to claim 1, it is characterised in that described prefabricated assembled lateral plate（9）It is internal
Vertical prestressed reinforcement is provided with reserved grouting channel, grouting channel（11）And post-grouting occluding body（10）, vertical prestressing
Reinforcing bar（11）Bottom and junction steel plate（32）Anchoring, junction steel plate（32）On be provided with reinforced hole（33）.
4. roadbed widening structure according to claim 1, it is characterised in that described oblique auxiliary outer strut（21）And water
Flat internal overarm support（20）On be provided with length adjustment device, wherein horizontal internal overarm support（20）One end and prefabricated assembled lateral plate
（9）Connection, the other end and former barricade（19）Upper U-shaped steel hoop（17）Screw shell（30）It is connected, U-shaped steel hoop（17）By three
Block steel plate, which is hinged, to be formed, with former barricade（19）Top is anchored by bolt.
5. roadbed widening structure according to claim 1, it is characterised in that described cast-in-place concrete bottom plate（23）Part
Vertical reinforcement passes through prefabricated assembled lateral plate（9）Bottom junction steel plate（32）Colligation, pours rear top mark high with prefabricated side plate
Top mark height is identical.
6. roadbed widening structure according to claim 1, it is characterised in that described cellular concrete backfill layer（16）With
Top delay slag backfill layer（12）Between be provided with waterproof geotextiles（13）, its inner transverse reinforced mesh（15）One end and prefabricated dress
With the lateral plate of formula（9）Connection, the other end passes through mesh sheet soil nailing（14）It is fixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720075908.8U CN206553851U (en) | 2017-01-20 | 2017-01-20 | roadbed widening structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720075908.8U CN206553851U (en) | 2017-01-20 | 2017-01-20 | roadbed widening structure |
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ID=60359046
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761498A (en) * | 2017-11-13 | 2018-03-06 | 固远晨通科技发展有限公司 | A kind of cast-in-place light concrete structure and its construction method based on spiral steel pile |
| CN107988871A (en) * | 2017-12-08 | 2018-05-04 | 中国铁建港航局集团有限公司 | A kind of multi-functional soft soil roadbed wide road of spelling |
| CN109680583A (en) * | 2019-02-21 | 2019-04-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Processing method for road shoulder wall of steep rock road section |
| CN109750682A (en) * | 2019-03-20 | 2019-05-14 | 杭州昂创科技有限公司 | The hard and soft combination combined type ecological slope protection construction method of foam concrete roadbed side slope |
| WO2022247015A1 (en) * | 2021-05-27 | 2022-12-01 | 中铁十九局集团第三工程有限公司 | Retaining wall structure using corrugated plates and construction method therefor |
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2017
- 2017-01-20 CN CN201720075908.8U patent/CN206553851U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107761498A (en) * | 2017-11-13 | 2018-03-06 | 固远晨通科技发展有限公司 | A kind of cast-in-place light concrete structure and its construction method based on spiral steel pile |
| CN107988871A (en) * | 2017-12-08 | 2018-05-04 | 中国铁建港航局集团有限公司 | A kind of multi-functional soft soil roadbed wide road of spelling |
| CN107988871B (en) * | 2017-12-08 | 2024-05-14 | 中国铁建港航局集团有限公司 | Multi-functional soft soil roadbed piece together wide road |
| CN109680583A (en) * | 2019-02-21 | 2019-04-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Processing method for road shoulder wall of steep rock road section |
| CN109750682A (en) * | 2019-03-20 | 2019-05-14 | 杭州昂创科技有限公司 | The hard and soft combination combined type ecological slope protection construction method of foam concrete roadbed side slope |
| WO2022247015A1 (en) * | 2021-05-27 | 2022-12-01 | 中铁十九局集团第三工程有限公司 | Retaining wall structure using corrugated plates and construction method therefor |
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