CN108678000A - A kind of U-shaped retaining structure of roadbed Xia Chuan highways and its construction method - Google Patents
A kind of U-shaped retaining structure of roadbed Xia Chuan highways and its construction method Download PDFInfo
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- CN108678000A CN108678000A CN201810800400.9A CN201810800400A CN108678000A CN 108678000 A CN108678000 A CN 108678000A CN 201810800400 A CN201810800400 A CN 201810800400A CN 108678000 A CN108678000 A CN 108678000A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0275—Retaining or protecting walls characterised by constructional features cast in situ
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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
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Abstract
The invention discloses a kind of U-shaped retaining structure of roadbed Xia Chuan highways and its construction method, the U-shaped retaining structure is U-type groove, is poured using armored concrete；The construction method include pipeline move change, isolation is gone along with sb. to guard him firmly, fender post and Guan Liang construction, cutting excavation, bed course and construction of waterproof layer, construction of bottom plates, side wall construction, structurally waterproof construction and wall body both sides backfill.Construction method of the present invention ensure that existing Freeway Foundation by construction infection, does not ensure highway operation, solves road excavation to the issuable influence of existing bridge pile foundation, and ensure construction safety, have apparent economic benefit and social benefit.
Description
Technical field
The present invention relates to a kind of U-shaped retaining structure of roadbed Xia Chuan highways and its construction methods.
Background technology
With the fast development of China express railway, it is more and more to wear the phenomenon that having runed highway bridge under newly built railway,
It is easy to generate disturbance to existing abutment and its surrounding geological environment.For example, newly-built Beijing to Zhangjiakou railway JZSG-6 bid sections, position
Domestic in Huailai County, the beginning and the end mileage is DK106+907.95~DK132+250.Originally it is marked under DK109+530~DK109+610 sections
The new highway in capital is worn, 48 ° of the angle of cut is parallel with existing Jing Baotielu；Original ground is 4.2m with existing Bridge Beam bottom clear distance.
In order to ensure that existing Freeway Foundation by construction infection, does not ensure highway operation, road excavation pair is solved
The existing issuable influence of bridge pile foundation, and ensure construction safety, therefore provide a kind of suitable for subgrade supports such as railway, subways
The construction method of the closed U-shaped retaining structure of cutting, is very necessary in shelves engineering.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that being worn under providing a kind of roadbed
The U-shaped retaining structure of highway and its construction method.
To achieve the above object, the present invention provides the following technical solutions：
A kind of U-shaped retaining structure of roadbed Xia Chuan highways, the U-shaped retaining structure are U-type groove, are poured using armored concrete；Institute
The bottom for stating U-type groove uses blotter and concrete cushion, upper berth self-adhesive waterproof coiled material, waterproof roll upper berth microlith
Concrete cover；U-type groove side is equipped with the full packet waterproof of self-adhesive waterproof coiled material, at the subsiding crack and construction joint of the U-type groove
Equipped with middle buried water stop, the upstream face of the U-type groove is additionally provided with self-adhesive waterproof coiled material enhancement layer.
A kind of above-mentioned U-shaped retaining structure of roadbed Xia Chuan highways, wherein the U-type groove 8 saves totally, often saves 10m, wide 13.8m,
Bottom plate thickness 80cm, the wide 80cm of side wall, the high 7.2m of side wall.
Above-mentioned a kind of U-shaped retaining structure of roadbed Xia Chuan highways, wherein gone along with sb. to guard him equipped with armored concrete the U-type groove both sides
Stake；The long 16m of fender post stake, stake top are 1.2 × 1.6 reinforced concrete beams.
A kind of construction method of the U-shaped retaining structure of roadbed Xia Chuan highways, includes the following steps：
（1）Pipeline, which moves, to be changed：According to subgrade construction range gut line deployment scenarios, excavated by manual work trial trench determines the position of pipeline, pathway,
Then pipeline move changing；
（2）Hard isolation is gone along with sb. to guard him：Before construction, hard segregator barriers are set on existing cutting, construction site is isolated with existing line,
Wherein fence uses height for 1.8 meters of steel fabric sheets, and column is φ 48mm steel pipes, spacing 3.0m, buried depth 40cm；
（3）Fender post and Guan Liang construction：Fender post uses manually digging hole construction technology, and using jumping, stake is excavated and gradation is constructed, phase
Adjacent stake cannot construct simultaneously；The technological process of manually digging hole：Levelling of the land → measurement fixed pile → excavation stake holes → installs retaining wall
Template → carry out retaining wall concrete construction → excavated by often section retaining wall requirement height repetition, panelling construction are until design stake bottom absolute altitude → steel
Muscle cage makes, lifts in place → pile foundation concrete placings.
（4）Cutting excavation：Intercepting ditch is set in top of the slope before cutting excavation；Cutting excavation is applied from small mileage to big mileage
Work, from top to bottom lateral overall with layering carry out, every layer of 1m；The soil layer stopping machinery for being excavated to 30cm on design substrate absolute altitude is opened
It digs, cooperation manually carries out clear bottom；
（5）Bed course and construction of waterproof layer：Substrate spreads 30cm blotters, and both sides are used channel steel to carry out 20cm thickness C25 as side form and mixed
Solidifying soil padding pours, and geotextiles are covered after pouring and watering conserves；Waterproof roll is laid immediately on substrate surface, has been laid with
Coiled material isolation film is removed after finishing, and pours 5cm thickness C30 pea gravel concreten protective layers immediately；
（6）Construction of bottom plates：The bottom plate of U-type groove is constructed according to subsiding crack location segment, and bottom plate uses steel form, and mixed using reinforcing bar
Solidifying soil perfusion, when perfusion the drop height degree that freely inclines be not more than 2m；Buried water stop uses special reinforced set or band steel at subsiding crack
Fixed, the discoid installation of waterstop, the angle control of both wings and horizontal direction is between 15-20 degree；
（7）Side wall is constructed：The side wall of U-type groove uses combined steel, and form joint presss from both sides sponge strip with mortar leakage prevention, wrong at form joint
Platform is not more than 2mm；When side wall formwork support arrangement, footing adds the lumps of wood of sweeping the floor, both sides to set split bolt, horizontal brace and diagonal brace；Every
80cm sets one of split bolt, is in quincuncial arrangement, using 15 × 15cm lumps of wood heels；Wherein bolt coat pvc pipe ensures to tear open
Split bolt can smoothly be split out when mould；When formwork support arrangement, with the inner support of accomplish wide with body of wall, inner support interval is set for setting on the inside of template
It sets, is in quincuncial arrangement；
Side wall template concreting layering carries out, and when placement layer by layer, in lower-layer concrete initial set or can remold preceding completion upper layer
Concrete pours, and every layer of sequence from coil to coil progress vibrated by first center rear perimeter edge, vibrating spear is inserted perpendicularly into, and fast insert is pulled out slowly, week
Vibrating spear is inserted into along reinforcing bar inner ring when the concrete vibrating of side, and vibrating head is kept with side form at a distance from 50-100mm；
（8）Structurally waterproof is constructed：U-type groove structure uses self-adhesive coiled material full-enclosed waterproof, the privileged sites such as negative and positive angle to do coiled material and add
Strong layer；Outside is protected using plastic foam plate after abutment wall and overhanging coiled material are laid with；
One of expansion joint of the longitudinally spaced setting of U-type groove agent structure, expansion joint is using duroplasts cystosepiment, polystyrene foam
Plastic plate filleting, both ends are blocked using polyurethane sealant, and buried water stop carries out waterproof during expansion joint uses, and is adopted on the outside of side wall
With back-adhering waterstop waterproof；Away from one of construction joint is arranged at bottom plate 30cm, construction joint is buried in using to be stopped U-type groove side wall wall body
Water band carries out waterproof；
（9）Wall body both sides backfill：It is backfilled using C15 concrete；Both sides will symmetrically carry out when backfill, reinforce shaking in the process
It smashes.
The construction method of above-mentioned a kind of U-shaped retaining structure of roadbed Xia Chuan highways, wherein concreting is answered after complete 14 hours
Covering watering maintenance is carried out, curing time is no less than 14 days.
Beneficial effects of the present invention are embodied in：
（1）Construction method of the present invention is that railway bed supporting file engineering proposes new reinforcement form, solves road excavation to both
There is the issuable influence of bridge pile foundation.
（2）Construction method technological process of the present invention understands that easy to operate, construction safety is easily controllable.
（3）Construction method of the present invention provides valuable experience to wear existing expressway safety construction under railway systems,
With significant economic benefit and social benefit.
Description of the drawings
The above and other feature of the present invention, property and advantage will pass through description with reference to the accompanying drawings and examples
And become apparent, identical reference numeral always shows identical feature in the accompanying drawings, wherein：
The process flow chart of Fig. 1 construction methods of the present invention.
The new high speed construction plan in existing capital is worn under Fig. 2 embodiment of the present invention 1.
1 U-type groove diagrammatic cross-section of Fig. 3 embodiment of the present invention.
Schematic diagram is gone along with sb. to guard him in the isolation firmly of Fig. 4 embodiment of the present invention 1.
1 U-shaped structure waterproof sectional schematic diagram of Fig. 5 embodiment of the present invention.
1 abutment wall construction joint water proof structure schematic diagram of Fig. 6 embodiment of the present invention.
1 abutment wall waterproofing of movement joints organigram of Fig. 7 embodiment of the present invention.
In figure：1- steel fabric sheets, 2- columns, 3- construction joints, 4- substrate bed courses, 5- substrate waterproof layers, 6- bottom plates, 7- self-adhesions
Formula waterproof roll, 8- self-adhesive waterproof coiled material enhancement layers, 9- cement-base infiltration crystallization coatings, 10- lower-layer concretes are buried in 11-
Formula waterstop, the upper layer concretes of 12-, 13- back-adhering waterstops, 14- caulking materials.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples：
Embodiment 1 creates Beijing to Zhangjiakou railway JZSG-6 bid sections, and capital new peak is worn under DK109+530~DK109+610 sections
Fast highway, 48 ° of the angle of cut are parallel with existing Jing Baotielu；Original ground and the clear distance at existing Bridge Beam bottom are 4.2m.It is with the bid section
Example applies construction method of the present invention.
A kind of U-shaped retaining structure of roadbed Xia Chuan highways, the U-shaped retaining structure is U-type groove, using C35 armored concrete
It pours；The bottom of the U-type groove use 30cm blotters and 20cm thickness C25 concrete cushions, upper berth self-adhesive waterproof coiled material,
The waterproof roll upper berth 5cm thickness C30 pea gravel concreten protective layers；U-type groove side is equipped with self-adhesive waterproof coiled material 7, and packet is anti-entirely
Water, middle buried water stop 11 is equipped at the subsiding crack and construction joint of the U-type groove, and the upstream face of the U-type groove is additionally provided with self-adhesion
Formula waterproof roll enhancement layer 8.
Wherein, U-type groove 8 saves totally, often saves 10m, wide 13.8m, bottom plate thickness 80cm, the wide 80cm of side wall, the high 7.2m of side wall.It is U-shaped
Slot both sides are equipped with Φ 1.2m steel reinforced concrete fender posts；The long 16m of fender post stake, stake top are 1.2 × 1.6 reinforced concrete beams,
Protect the new high speed bridge pier in capital and foundation pit.
A kind of construction method of the U-shaped retaining structure of roadbed Xia Chuan highways, as shown in Figure 1, including the following steps：
（1）Pipeline, which moves, to be changed：According to subgrade construction range gut line deployment scenarios, excavated by manual work trial trench determines the position of pipeline, pathway,
Then pipeline move changing；
（2）Hard isolation is gone along with sb. to guard him：Before construction, hard segregator barriers are set on existing cutting, construction site is isolated with existing line,
Wherein fence uses height for 1.8 meters of steel fabric sheets 1, and column 2 is φ 48mm steel pipes, spacing 3.0m, buried depth 40cm；
（3）Fender post and Guan Liang construction：Fender post uses manually digging hole construction technology, and using jumping, stake is excavated and gradation is constructed, phase
Adjacent stake cannot construct simultaneously；The technological process of manually digging hole：Levelling of the land → measurement fixed pile → excavation stake holes（1m depth）→
Install that dado template → carry out retaining wall concrete construction → repeat to excavate by every section retaining wall requirement height, panelling construction is until design stake bottom
Absolute altitude → fabrication of reinforcing cage, lifting in place → pile foundation concrete placings.
Wherein, manually digging hole is successively carried out with pick, spade from top to bottom, and shoveling order is first middle section, digs periphery afterwards.Often
It is a section to dig depth 1.0m, concrete dado of often constructing as early as possible after the completion of section excavation.
Steel reinforcement cage merogenesis is installed, and weld uses single welding.Filling concrete uses tumbling barrel tremie placing, stake top 2m models
Interior insertion vibrating spear is enclosed to vibrate.
Guan Liang construction should cut the super part concrete poured of stake top, while clear up stake top residue, surface dust and ponding, and carry out
Dabbing processing.Guan Liang reinforcing bar is bound, notices that the vertical main reinforcement of pile body gos deep into Guan Liang anchorage length in construction, is carried out according to design length
Anchoring, shuttering, template use combined steel formwork.Concrete is transported to by agitator truck pour position after, manually enter mould, be inserted into
Formula vibrator is fiddled with closely knit.
（4）Cutting excavation：Intercepting ditch is set in top of the slope before cutting excavation, prevents surface water from flowing into foundation pit and to going along with sb. to guard him knot
Structure jacking row slope erosion；Cutting excavation is constructed from small mileage to big mileage, and lateral overall with layering from top to bottom carries out, often
Layer 1m；The soil layer for being excavated to 30cm on design substrate absolute altitude stops mechanical excavation, and cooperation manually carries out clear bottom；
（5）Bed course 4 and waterproof layer 5 are constructed：Substrate spreads 30cm blotters, and both sides use channel steel to carry out 20cm thickness C25 as side form
Concrete cushion pours, and geotextiles are covered after pouring and watering conserves；Waterproof roll is laid immediately on substrate surface, is laid with
After remove coiled material isolation film, and pour 5cm thickness C30 pea gravel concreten protective layers immediately；
（6）Bottom plate 6 is constructed：The bottom plate 6 of U-type groove is constructed according to subsiding crack location segment, and bottom plate 6 uses steel form, and uses steel
Reinforced concrete is perfused, when perfusion the drop height degree that freely inclines be not more than 2m；In at subsiding crack buried water stop using it is special reinforced set or
Band steel is fixed, the discoid installation of waterstop, and the angle of both wings and horizontal direction controls between 15-20 degree；
（7）Side wall is constructed：The side wall of U-type groove uses combined steel, template single-block area to be more than 1.0m2, form joint folder sponge
Item is with mortar leakage prevention, and faulting of slab ends is not more than 2mm at form joint；When side wall formwork support arrangement, footing adds the lumps of wood of sweeping the floor, both sides to set to drawing spiral shell
Bolt, horizontal brace and diagonal brace；One of split bolt is set every 80cm, is in quincuncial arrangement, using 15 × 15cm lumps of wood heels；Wherein
Bolt coat pvc pipe ensures that split bolt can smoothly be split out when form removal；When formwork support arrangement, same wall is set on the inside of template
Wide inner support is divided into 1.5m between inner support setting, is in quincuncial arrangement；Inner support uses Φ 16mm reinforcement fabrications, with pouring for concrete
It builds, inner support is pulled out immediately, waits for that hypomere side wall is continuing with；After template installs, its plan-position, elevation of top, section are coped with
Point is coupled and vertically and horizontally stability is checked.All sundries of template surface should be removed before concrete placings；
Before side wall template concreting, template inside bottom should first smear one layer of high grade cement based penetrant crystalline coating 9, between template
Gap with double faced adhesive tape paper close, split bolt will be tightened, with mortar leakage prevention；Side wall template concreting layering carries out, point
Layer thickness about 30~40cm, when placement layer by layer, in 10 initial set of lower-layer concrete or before capable of remold completion go up pouring for layer concrete 12
It builds, to make poker vibrator go deep into lower layer（5~10cm）It vibrates so that layer adhesion is integrated；Every layer vibrates by elder generation
The sequence from coil to coil of heart rear perimeter edge carries out, and vibrating spear is inserted perpendicularly into, and fast insert is pulled out slowly, is inserted into vibration duration every time and is about maintained at
20s, vibrating spear is inserted into along reinforcing bar inner ring when the concrete vibrating of periphery, vibrating head at a distance from side form holding 50-100mm；Coagulation
Soil should carry out covering watering maintenance after having poured 14 hours, curing time is no less than 14 days.
（8）Structurally waterproof is constructed：U-type groove structure uses 7 full-enclosed waterproof of self-adhesive coiled material, the privileged sites such as negative and positive angle to roll up
Material enhancement layer 8；Outside is protected using plastic foam plate after abutment wall and overhanging coiled material are laid with；
Along longitudinal direction one of expansion joint, slit width 2cm is arranged for every 9.98 meters in U-type groove agent structure；Expansion joint using duroplasts cystosepiment,
Polystyrene plastic foamboard filleting, both ends are blocked using 20mm thickness polyurethane sealants, buried water stop during expansion joint uses
Waterproof is carried out, 13 waterproof of back-adhering waterstop is used on the outside of side wall；U-type groove side wall wall body is constructed together away from setting at bottom plate 30cm
Seam, buried water stop carries out waterproof during construction joint uses；It, will only first by concrete jolt ramming on the downside of waterstop when floor structure is constructed
After water band is compacted to its surface, it is further continued for casting concrete；Side wall symmetrically pours when constructing in the both sides of waterstop；
（9）Wall body both sides backfill：Backfill operation is carried out after wall body intensity reaches design requirement, is returned using C15 concrete
It fills out；Both sides will symmetrically carry out when backfill, reinforce vibrating in the process.
The technological principle of construction method of the present invention is：U-type groove as branch mark structure, cutting by narrow zone and around
When having building that cannot remove, using the strength and stiffness of abutment wall, the lateral pressure of surrounding soil is resisted, certainly using abutment wall, bottom plate
The upper uplift pressure that underground water is resisted in weight and affiliated facility dead weight reaches the safety for ensuring railway to the stability of holding structure
The purpose of operation.
The present invention is constructed using U-type groove, is passed through in the underpass that can be reserved between two pier of built highway, is solved
Construction space is insufficient, and what the excavation location that level of ground water is higher, precipitation, draining or slope condition are restricted can not construct asks
Topic, avoids setting overpass, reduces roadbed filling height.Compared with overpass beam, support cast-in-place, cantilever are either used
It pours or fabrication and erection, U-type groove construction economy benefit is all clearly.
High-speed railway wears mode across the highway of operation under using, have small risk, short time limit, take up an area less, cost
It is low, small to existing highway Influence to operation.Using construction technology provided by the invention to promoting entire railway traffic cause more
The development well more saved has good social benefit.
Compare by representative example it should be pointed out that specific implementation mode is the present invention, it is clear that skill of the invention
Art scheme is not limited to the above embodiments, and can also have many variations.Those skilled in the art define public affairs with the present invention
Written description open or according to file is undoubted to be obtained, and this patent scope of the claimed is considered as.
Claims (5)
1. a kind of U-shaped retaining structure of roadbed Xia Chuan highways, which is characterized in that the U-shaped retaining structure is U-type groove, using reinforcing bar
Concreting；The bottom of the U-type groove uses blotter and concrete cushion, upper berth self-adhesive waterproof coiled material described anti-
Water coiled material upper berth pea gravel concreten protective layer；U-type groove side is equipped with the full packet waterproof of self-adhesive waterproof coiled material, and the U-type groove is sunk
It is equipped with middle buried water stop at drop seam and construction joint, the upstream face of the U-type groove is additionally provided with self-adhesive waterproof coiled material enhancement layer.
2. a kind of U-shaped retaining structure of roadbed Xia Chuan highways according to claim 1, which is characterized in that the U-type groove totally 8
Section, often saves 10m, wide 13.8m, bottom plate thickness 80cm, the wide 80cm of side wall, the high 7.2m of side wall.
3. a kind of U-shaped retaining structure of roadbed Xia Chuan highways according to claim 1, which is characterized in that the U-type groove both sides
Equipped with steel reinforced concrete fender post；The long 16m of fender post stake, stake top are 1.2 × 1.6 reinforced concrete beams.
4. a kind of construction method of the U-shaped retaining structure of roadbed Xia Chuan highways, which is characterized in that include the following steps：
（1）Pipeline, which moves, to be changed：According to subgrade construction range gut line deployment scenarios, excavated by manual work trial trench determines the position of pipeline, pathway,
Then pipeline move changing；
（2）Hard isolation is gone along with sb. to guard him：Before construction, hard segregator barriers are set on existing cutting, construction site is isolated with existing line,
Wherein fence uses height for 1.8 meters of steel fabric sheets, and column is φ 48mm steel pipes, spacing 3.0m, buried depth 40cm；
（3）Fender post and Guan Liang construction：Fender post uses manually digging hole construction technology, and using jumping, stake is excavated and gradation is constructed, phase
Adjacent stake cannot construct simultaneously；The technological process of manually digging hole：Levelling of the land → measurement fixed pile → excavation stake holes → installs retaining wall
Template → carry out retaining wall concrete construction → excavated by often section retaining wall requirement height repetition, panelling construction are until design stake bottom absolute altitude → steel
Muscle cage makes, lifts in place → pile foundation concrete placings；
（4）Cutting excavation：Intercepting ditch is set in top of the slope before cutting excavation；Cutting excavation is constructed from small mileage to big mileage,
Lateral overall with layering carries out from top to bottom, every layer of 1m；The soil layer for being excavated to 30cm on design substrate absolute altitude stops mechanical excavation, matches
Conjunction manually carries out clear bottom；
（5）Bed course and construction of waterproof layer：Substrate spreads 30cm blotters, and both sides are used channel steel to carry out 20cm thickness C25 as side form and mixed
Solidifying soil padding pours, and geotextiles are covered after pouring and watering conserves；Waterproof roll is laid immediately on substrate surface, has been laid with
Coiled material isolation film is removed after finishing, and pours 5cm thickness C30 pea gravel concreten protective layers immediately；
（6）Construction of bottom plates：The bottom plate of U-type groove is constructed according to subsiding crack location segment, and bottom plate uses steel form, and mixed using reinforcing bar
Solidifying soil perfusion, when perfusion the drop height degree that freely inclines be not more than 2m；Buried water stop uses special reinforced set or band steel at subsiding crack
Fixed, the discoid installation of waterstop, the angle control of both wings and horizontal direction is between 15-20 degree；
（7）Side wall is constructed：The side wall of U-type groove uses combined steel, and form joint presss from both sides sponge strip with mortar leakage prevention, wrong at form joint
Platform is not more than 2mm；When side wall formwork support arrangement, footing adds the lumps of wood of sweeping the floor, both sides to set split bolt, horizontal brace and diagonal brace；Every
80cm sets one of split bolt, is in quincuncial arrangement, using 15 × 15cm lumps of wood heels；Wherein bolt coat pvc pipe ensures to tear open
Split bolt can smoothly be split out when mould；When formwork support arrangement, with the inner support of accomplish wide with body of wall, inner support interval is set for setting on the inside of template
It sets, is in quincuncial arrangement；
Side wall template concreting layering carries out, and when placement layer by layer, in lower-layer concrete initial set or can remold preceding completion upper layer
Concrete pours, and every layer of sequence from coil to coil progress vibrated by first center rear perimeter edge, vibrating spear is inserted perpendicularly into, and fast insert is pulled out slowly, week
Vibrating spear is inserted into along reinforcing bar inner ring when the concrete vibrating of side, and vibrating head is kept with side form at a distance from 50-100mm；
（8）Structurally waterproof is constructed：U-type groove structure uses self-adhesive coiled material full-enclosed waterproof, the privileged sites such as negative and positive angle to do coiled material and add
Strong layer；Outside is protected using plastic foam plate after abutment wall and overhanging coiled material are laid with；
One of expansion joint of the longitudinally spaced setting of U-type groove agent structure, expansion joint is using duroplasts cystosepiment, polystyrene foam
Plastic plate filleting, both ends are blocked using polyurethane sealant, and buried water stop carries out waterproof during expansion joint uses, and is adopted on the outside of side wall
With back-adhering waterstop waterproof；Away from one of construction joint is arranged at bottom plate 30cm, construction joint is buried in using to be stopped U-type groove side wall wall body
Water band carries out waterproof；
（9）Wall body both sides backfill：It is backfilled using C15 concrete；Both sides will symmetrically carry out when backfill, reinforce shaking in the process
It smashes.
5. a kind of construction method of U-shaped retaining structure of roadbed Xia Chuan highways according to claim 4, which is characterized in that mixed
Solidifying soil should carry out covering watering maintenance after having poured 14 hours, curing time is no less than 14 days.
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| CN201810800400.9A CN108678000B (en) | 2018-07-20 | 2018-07-20 | U-shaped retaining structure for roadbed underpass highway and construction method thereof |
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| CN201810800400.9A CN108678000B (en) | 2018-07-20 | 2018-07-20 | U-shaped retaining structure for roadbed underpass highway and construction method thereof |
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| CN108678000B CN108678000B (en) | 2020-06-12 |
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| CN109488344A (en) * | 2018-10-29 | 2019-03-19 | 中铁十二局集团有限公司 | Subway waterstop waterproof construction method |
| CN109680572A (en) * | 2018-11-26 | 2019-04-26 | 山东汇通建设集团有限公司 | Roadbase concrete side form integrated comprehensive pipeline construction method |
| CN109826231A (en) * | 2019-02-15 | 2019-05-31 | 沈阳铁道勘察设计院有限公司 | A kind of novel super-high U-type groove structure and its setting method |
| CN109972646A (en) * | 2019-05-20 | 2019-07-05 | 古清 | Existing railway line line-to-line pile foundation builds mechanical equipment and pile foundation construction method |
| CN110029628A (en) * | 2019-05-24 | 2019-07-19 | 郑州水务建筑工程股份有限公司 | A kind of water conservancy project raft plate dilatation joint waterproof structure |
| CN111058487A (en) * | 2020-01-09 | 2020-04-24 | 中铁第一勘察设计院集团有限公司 | Node protection system and method for staged construction of underground structure |
| CN111485559A (en) * | 2020-05-08 | 2020-08-04 | 合肥市市政设计研究总院有限公司 | Cut road pipeline moving and changing and foundation pit supporting and protecting conversion structure and construction method |
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| CN110029628A (en) * | 2019-05-24 | 2019-07-19 | 郑州水务建筑工程股份有限公司 | A kind of water conservancy project raft plate dilatation joint waterproof structure |
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| CN111485559A (en) * | 2020-05-08 | 2020-08-04 | 合肥市市政设计研究总院有限公司 | Cut road pipeline moving and changing and foundation pit supporting and protecting conversion structure and construction method |
| CN113373973A (en) * | 2021-01-13 | 2021-09-10 | 贵州智华建设工程有限责任公司 | U type groove cutting integrated configuration retaining wall |
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