CN203393530U - Anti-floating lightweight high-fill embankment structure - Google Patents

Anti-floating lightweight high-fill embankment structure Download PDF

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Publication number
CN203393530U
CN203393530U CN201320483238.5U CN201320483238U CN203393530U CN 203393530 U CN203393530 U CN 203393530U CN 201320483238 U CN201320483238 U CN 201320483238U CN 203393530 U CN203393530 U CN 203393530U
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CN
China
Prior art keywords
embankment
soil layer
lightweight
reinforced mesh
floating
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Expired - Fee Related
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CN201320483238.5U
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Chinese (zh)
Inventor
李华震
赵文军
朱华舟
张庚林
宋德明
郑文青
杨林
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JIANGSU XIANGSEN CONSTRUCTION ENGINEERING Co Ltd
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JIANGSU XIANGSEN CONSTRUCTION ENGINEERING Co Ltd
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Priority to CN201320483238.5U priority Critical patent/CN203393530U/en
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Publication of CN203393530U publication Critical patent/CN203393530U/en
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Abstract

The utility model relates to an anti-floating lightweight high-fill embankment structure which is characterized in by comprising a solidified soil layer, a lightweight embankment, reinforcing meshes and water drainage pipes, wherein vertical water drainage pipes are embedded in the solidified soil layer, the solidified soil layer and the upper lightweight embankment are connected by using the reinforcing meshes, and the reinforcing meshes are buried crisscross; horizontal water drainage pipes are laid at the bottom of the lightweight embankment and communicated with the upper ports of vertical water drainage pipes, and the lower ports of the vertical water drainage pipes arrive at the lower part of a soft soil layer; and a conventional earth-filled embankment is arranged on the lightweight embankment, and the slope toe of the embankment structure is provided with a drainage ditch. The embankment structure disclosed by the utility model has the advantages of high structure construction speed, good anti-floating effect, small lateral deformation, and small total settlement and post-construction settlement; therefore, compared with the prior art, the anti-floating lightweight high-fill embankment structure has good technical and economic benefits.

Description

The high embankment structure of a kind of anti-floating lightweight
Technical field
The utility model relates to the high embankment structure of a kind of anti-floating lightweight.Belong to subgrade construction field, be applicable to subgrade construction large at settlement of foundation, the newly-built road in groundwater table compare Gao location.
Background technology
China's Coastal Areas, it is numerous and complicated that soft foundation distributes, its general moisture content compared with high, compressibilty is large, intensity is low, the coefficient of consolidation is little and soil layer layered arrangement complicated, causes that difficulty of construction is large, construction requirement is high.Irrational Soft Ground design can cause that road structure destroys and the inclination of Adjacent Buildings is even collapsed, and has potential safety hazard.Therefore, soft soil roadbed settlement and anti-floating have become the key factor that affects subgrade construction quality, cost, maintenance cost etc.
China is in soft soil roadbed settlement Treatment Design at present, conventionally adopt lightweight fill material, such as substituting common backfill with New Building Materials such as cellular concrete, EPS light soil or flyash, alleviate upper load, thereby reach the object that reduces sedimentation, controls sedimentation.But the higher roadbed of groundwater table particularly in some soft clay area, because own wt is not enough, easily there is rising phenomenon in light road foundation, has a strong impact on subgrade stability.Aspect the processing of embankment anti-floating, conventional method is in embankment, to pierce anti-float anchor rod, anti-float anchor rod can drawknot embankment and underground soil layer, with this, reduce the impact of buoyancy force of underground water on embankment stability, but anti-float anchor rod is puted forth effort the soil body to lower end and had relatively high expectations, the dyke of satisfying the need while setting construction divides soil disturbance larger, causes the structural deterioration of built embankment, roadbed resistance to overturning reduces, and easily produces settlement after construction.
In sum, although the method for more existing punishment soft soil roadbed settlement abnormal problems in subgrade construction, construction is comparatively complicated loaded down with trivial details mostly, and can not take into account sedimentation and anti-floating problem, and part construction technology is difficult to be suitable for for Road width compare little section.
Given this, in order to solve soft soil roadbed settlement and anti-floating problem, need at present a kind of anti-floating light road bank structure that can simultaneously meet multipurposes such as reducing soft soil roadbed settlement after construction, raising roadbed anti-floating ability, easy construction of invention badly.
Summary of the invention
The purpose of this utility model is that combination utilize to solidify that soft soil construction is convenient, light road bank load is low, reinforced mesh intensity is large and the advantage such as creep is little, provide that a kind of construction is convenient fast, roadbed dead load is little, there is good stability, anti-floating, road structure that construction costs is low.
The high embankment structure of lightweight, is characterized in that described structure comprises curing soil layer, light road bank, reinforced mesh and gutter; Solidify in soil layer and be embedded with vertical drainage pipe, solidify soil layer and adopt reinforced mesh to be connected with upper strata light road bank, reinforced mesh is crisscross to be buried underground; Transverse drain is layed in light road bank bottom, is communicated with vertical drainage pipe upper port, and vertical drainage infratubal port gos deep into Soft Soil Layer bottom; Light road bank top is conventional earthfill road embankment, and is provided with gutter at embankment toe.
Gutter combines laying anyhow, vertical drainage pipe one end connection transverse drain, and the other end, vertically through solidifying soil layer to Soft Soil Layer bottom, inserts weak soil interval gutter and offers in advance a plurality of apertures, and wrap up with geotechnological gauze.
The vertical embedding in reinforced mesh lower end solidified soil layer, and light road bank is imbedded in upper end, and reinforced mesh can substitute with geo-grid or tension rib net.
Described light road bank adopts cellular concrete, EPS light filler or flyash to fill, and at side slope place, waterproofing course is set.
The utlity model has following feature and beneficial effect:
(1) top layer weak soil adopts soil-solidified-agent to solidify or digging up and filling in formation solidified earth, can reduce settlement after construction, strengthens embankment bearing capacity and stability.
(2) light road bank can significantly reduce roadbed upper load, further effectively reduces settlement after construction and total settlement.
(3) reinforced mesh is crisscross is embedded between light road bank and curing soil layer, can strengthen embankment resistance to overturning, reduces the vertical and lateral deformation of embankment, improves embankment anti-floating.
(4) solidify reserved drainpipe in soil layer, effectively discharge section underground water, reduces the buoyancy of underground water to soil layer, improves the stability of embankment structure.
Accompanying drawing explanation
Fig. 1 is the high embankment structure cross-sectional drawing of the utility model anti-floating lightweight;
In figure: 1-solidifies soil layer, 2-transverse reinforcement net sheet, 3-longitudinal reinforcement net sheet, 4-light road bank, 5-transverse drain, 6-vertical drainage pipe, ,8-gutter, inlet opening, 7-vertical drainage pipe bottom, 9-backfill, 10-waterproof earthing, 11-road structure, 12-soft layer, the relative hardpan of 13-.
The specific embodiment
Roadbed shallow-layer excavation and backfilling process requirement, the requirement of light road bank casting craft and reinforced mesh construction technical requirement etc., be not repeated in present embodiment, and emphasis is set forth the embodiment that the utility model relates to structure.
Fig. 1 is the high embankment structure cross-sectional drawing of the utility model anti-floating lightweight.
The high embankment structure of a kind of anti-floating lightweight with reference to shown in Fig. 1, is mainly comprised of curing soil layer 1, transverse reinforcement net sheet 2, longitudinal reinforcement net sheet 3, light road bank 4, horizontal, vertical gutter; Ground top layer weak soil adopt solidify on the spot or excavation mix after again the mode of backfill form and solidify soil layer 1, solidify pre-buried vertical drainage pipe 6 in soil layer 1, vertical drainage pipe 6 is through solidifying soil layer in soft layer 12; Solidify soil layer 1 and adopt reinforced mesh to be connected with upper strata light road bank 4, reinforced mesh is crisscross to be buried underground; Transverse drain 5 is layed in light road bank 4 bottoms, is communicated with vertical drainage pipe 6 upper port; Transverse drain 5 has been laid after-pouring light road bank 4, and light road bank 4 upper stratas are followed successively by backfill 9 and road structure 11, and side slope of embankment carries out bank protection waterproofing work, and gutter 8 is set.
Before curing soil layer 1 is untreated, be muddy soft soil, below is natural soft layer 12 and relative hardpan 13.Solidifying soil layer 1 cutting depth is 2000mm, after excavation, sets vertical duct in soft layer 12, buries vertical drainage pipe 6 underground, and will excavate the soil body and ordinary Portland cement stirring, adopts 32.5 class g cements, backfill after mix, then compaction treatment; Anyhow gutter all adopts pvc pipe, and diameter is 75mm, and vertical drainage pipe 6 is vertical through solidifying soil layer 1 to Soft Soil Layer 12 bottoms, the gutter part of inserting Soft Soil Layer sets a plurality of apertures 7 in advance, and with geotechnological gauze parcel, prevent from entering silt in pipe, affect draining.
Reinforced mesh mesh size is 300mm * 300mm; Shallow layer soft soil solidifies before initial set, and reinforced mesh is vertically pressed into and solidifies 750mm in soil layer 1, crisscross burying underground, and determine reinforced mesh burial place according to vertical drainage pipe 6 upper port, guarantee transverse drain 5 energy uninterrupted communication vertical drainage pipe upper port; After reinforced mesh is pressed into, to solidifying soil layer 1 secondary compaction.
It is raw material that light road bank 4 adopts cellular concrete, and 1:1.5 is put slope and built, and thickness is 2000mm; Anyhow, after gutter has connected, build cellular concrete; Light road bank 4 is by reinforced mesh and curing soil layer 1 phase drawknot, and reinforced mesh is imbedded and solidified 750mm in soil layer 1, improves resistance to overturning.
Light road bank 4 has been built Hou, top and has been carried out soil body backfill formation soil layer 9, and thickness is 1500mm, and coefficient of consolidation is 1.75; Side slope of embankment arranges waterproofing course, and outside adopts earthing protection, carries out gutter and road structure construction.

Claims (4)

1. the high embankment structure of anti-floating lightweight, is characterized in that described structure comprises curing soil layer, light road bank, reinforced mesh and gutter; Solidify in soil layer and be embedded with vertical drainage pipe, solidify soil layer and adopt reinforced mesh to be connected with upper strata light road bank, reinforced mesh is crisscross to be buried underground; Transverse drain is layed in light road bank bottom, is communicated with vertical drainage pipe upper port, and vertical drainage infratubal port gos deep into Soft Soil Layer bottom; Light road bank top is conventional earthfill road embankment, and is provided with gutter at embankment toe.
2. the high embankment structure of anti-floating lightweight according to claim 1, it is characterized in that gutter combines laying anyhow, vertical drainage pipe one end connects transverse drain, the other end is vertically through solidifying soil layer to Soft Soil Layer bottom, insert weak soil interval gutter and offer in advance a plurality of apertures, and wrap up with geotechnological gauze.
3. the high embankment structure of anti-floating lightweight according to claim 1, is characterized in that the curing soil layer of the vertical embedding in reinforced mesh lower end, and light road bank is imbedded in upper end, and reinforced mesh can substitute with geo-grid or tension rib net.
4. the high embankment structure of anti-floating lightweight according to claim 1, is characterized in that light road bank adopts cellular concrete, EPS light filler or flyash to fill, and at side slope place, waterproofing course is set.
CN201320483238.5U 2013-08-08 2013-08-08 Anti-floating lightweight high-fill embankment structure Expired - Fee Related CN203393530U (en)

Priority Applications (1)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108691317A (en) * 2018-05-25 2018-10-23 武汉大学 The compound retaining wall of antifouling type reinforcement pervious concrete and its construction method
CN110331629A (en) * 2019-07-16 2019-10-15 中铁二十四局集团南昌铁路工程有限公司 A kind of highway anti-settling construction method
CN110846964A (en) * 2019-09-30 2020-02-28 东珠生态环保股份有限公司 Construction method of municipal soft soil roadbed
CN111395082A (en) * 2020-03-26 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure above operation tunnel, design and construction method
CN111691251A (en) * 2020-05-13 2020-09-22 中国路桥工程有限责任公司 Treatment method for subgrade settlement in tropical zone
CN112176804A (en) * 2020-10-12 2021-01-05 东南大学 Anti-settlement water retention roadbed structure in water-rich soft soil area and design method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108691317A (en) * 2018-05-25 2018-10-23 武汉大学 The compound retaining wall of antifouling type reinforcement pervious concrete and its construction method
CN110331629A (en) * 2019-07-16 2019-10-15 中铁二十四局集团南昌铁路工程有限公司 A kind of highway anti-settling construction method
CN110846964A (en) * 2019-09-30 2020-02-28 东珠生态环保股份有限公司 Construction method of municipal soft soil roadbed
CN111395082A (en) * 2020-03-26 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure above operation tunnel, design and construction method
CN111691251A (en) * 2020-05-13 2020-09-22 中国路桥工程有限责任公司 Treatment method for subgrade settlement in tropical zone
CN112176804A (en) * 2020-10-12 2021-01-05 东南大学 Anti-settlement water retention roadbed structure in water-rich soft soil area and design method

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Granted publication date: 20140115

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CF01 Termination of patent right due to non-payment of annual fee