CN102808418A - Firm structure for preventing and controlling freeze-thaw collapse of side slope in cold region and construction method for firm structure - Google Patents
Firm structure for preventing and controlling freeze-thaw collapse of side slope in cold region and construction method for firm structure Download PDFInfo
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- CN102808418A CN102808418A CN201210308898XA CN201210308898A CN102808418A CN 102808418 A CN102808418 A CN 102808418A CN 201210308898X A CN201210308898X A CN 201210308898XA CN 201210308898 A CN201210308898 A CN 201210308898A CN 102808418 A CN102808418 A CN 102808418A
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Abstract
The invention discloses a firm structure for preventing and controlling freeze-thaw collapse of a side slope in a cold region and a construction method for the firm structure. An arch framework is paved on the surface of the side slope; a slope toe wall is arranged at the bottom of the side slope; a plurality of drain pipes are arranged in each arch ring of the arch framework in a rectangular array or quincunx array mode; a plurality of drain holes are formed in each drain pipe; the outer wall of each drain pipe and the end of each drain pipe, which stretches into a soil body of the side slope, are coated with dense gauze; and a heat preservation structure is arranged on the bottom surface and the side wall of the slope toe wall and the surface of the side slope at certain depth. Groundwater can be effectively drained, groundwater level, the water content of the side slope and water migration rate are reduced, the stability of the side slope is ensured, and engineering cost is greatly reduced; through the heat preservation structure, the freezing depth and frost heaving thaw collapse amount of the side slope can be effectively reduced, and the engineering cost can be effectively reduced; and through the arch framework, the infiltration of surface water, and the scouring of the surface of the side slope due to melted snow, rain and the like are reduced, so that the width, depth and length of a lower layer crack are reduced, and the surface of the side slope is protected.
Description
Technical field
The present invention relates to side slope or slope stability technology, specifically, relate to the rock-steady structure and the job practices thereof of a kind of cold district different kinds of roads side slope, house foundation side slope, natural side slope.
Background technology
At present; Be used to prevent and treat the engineering of cold district's side slope freeze thawing slump; A kind of is to adopt the bigger non-frost heave coarse aggregate of transmission coefficient all to replace the original swelling soil of side slope, and another kind is to adopt non-cold district slope treatment method, promptly adopts retaining structures such as antislide pile or retaining wall to prop up retaining.
Adopt non-frost heave coarse aggregate can make construction costs increase tens of times, long construction period not only, and have potential safety hazard.Adopt the retaining structure cost also very high; Even more serious is can not fundamentally solve because the side slope superficial slump that the effect of periodicity frost heave thaw collapse causes is easy to form the vicious circle of " repair every year, annual bad "; Not only cause bigger economic loss, and left bigger potential safety hazard.
Summary of the invention
What the present invention will solve is the technical problem that cold district's side slope freeze thawing slump can't effect a radical cure, and a kind of robust structure and job practices thereof that is used to prevent and treat cold district's freeze thawing side slope slump is provided, the safety that can improve cold district's freeze thawing side slope, and construction costs is low simultaneously.
In order to solve the problems of the technologies described above, the present invention is achieved through following technical scheme:
A kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump, the side slope surface is equipped with arched framework, and the side slope bottom is provided with slope toe wall;
Be provided with a plurality of gutters in the arch ring of said arched framework; A plurality of said gutters are full sloping according to rectangular array or quincunx arranged in arrays along side slope; Said drain level or surperficial with 0 ~ 5 ° of inclination angle insertion slope soil; The slope soil surface is exposed in said gutter outer end, according to rectangular array or quincunx arranged in arrays a plurality of drain holes is arranged on the said gutter, and the end that said gutter outer wall and said gutter stretch in the slope soil is enclosed with close order gauze;
Said slope toe wall bottom surface is provided with bottom holding plates; Said slope toe wall sidewall is provided with the sidewall warming plate; In the above 3 ~ 5m scope of said slope toe wall; 0.4 ~ 0.6m degree of depth is provided with domatic warming plate below side slope surface, and said bottom holding plates, said sidewall warming plate and said domatic warming plate are through the EPS plate adhesion, and said bottom holding plates, said sidewall warming plate and said domatic warming plate all are arranged in the medium coarse sand bed course.
Slope soil surface 10 ~ 30cm is exposed in said gutter outer end.
Said gutter is 1.5 ~ 2.2m in the level interval of slope soil surface arrangement, and vertical spacing is 1.1 ~ 1.5m.
Said gutter is PE gutter, PVC gutter or steel gutter.
The diameter of said drain hole is 5 ~ 8mm.
Said close order gauze is provided with 1 ~ 5 layer.
The order number of said close order gauze is 100 ~ 150 orders.
Said slope toe wall is sheet stone concrete slope toe wall, rubble concrete slope toe wall or jackstone concrete slope toe wall.
A kind of job practices that is used to prevent and treat the robust structure of cold district's side slope freeze thawing slump comprises the steps:
(1) accurately measures said gutter position with transit, and mark with little timber;
(2) on said gutter, bore said drain hole, said drain hole is quincuncial arrangement, is rolled in said gutter outer wall with said close order bundle then, and its end of stretching in the slope soil is wrapped up;
(3) build rig odd-job platform in the bottom of the said gutter of step (1) position;
(4) with the artificial boring of hand drill, in the drilling process each advanced depth is controlled at 0.5 ~ 0.7m, the underframe fixation of support level rig can not shake on the side slope;
(5) said gutter is put into boring, and around said gutter, tamp with medium coarse sand, said medium coarse sand is stirred according to 1:1 by medium sand and coarse sand;
(6) excavate the support gutter of said arched framework by design drawing, with bottom, said support gutter and sidewall with flattening, concreting then;
(7) the sidewall concrete block masonry is formed the support drainage groove on the concrete of said support gutter;
(8) excavation arch ring ditch, and in arch ring ditch bottom concreting;
(9) soil with side slope surface 0.4 ~ 0.6m thickness excavates, and lays said medium coarse sand in the bottom, and with said medium coarse sand with small-sized vibrator vibration compacting, make its compactness reach 0.85 ~ 0.92;
(10) said bottom holding plates, said sidewall warming plate and said domatic warming plate are placed on the said medium coarse sand; Between said bottom holding plates, said sidewall warming plate and the said domatic warming plate EPS plate is glued, the marginal portion is connected with arched framework with concrete;
(11) on said bottom holding plates, said sidewall warming plate and said domatic warming plate, cover and re-lay said medium coarse sand, then will before the soil that falls of excavation put and be layered on the said medium coarse sand.
Concrete strength is C15 ~ C20 described in the said step (10).
The invention has the beneficial effects as follows:
The present invention adopts multilayer gutter technology; Effective white-out underground water; Dewatering, side slope moisture content and water translocation rate; Avoid adopting the big non-frost heave coarse aggregate of transmission coefficient all to replace the original swelling soil of side slope, not only guaranteed the stability of side slope, and can significantly reduce construction costs; Apart from side slope surface certain depth and slope toe wall bottom and side laying warming plate, connect with EPS plate between the warming plate, can effectively reduce the depth of frost penetration and the frost heave thaw collapse amount of side slope, also can reduce construction costs; Lay arched framework on the side slope surface, that can reduce surface water goes into to blend snow melt, rainfall etc. to surperficial the washing away of side slope, thereby reduces width, the degree of depth and the length in lower floor crack, can well protect side slope surface.
Description of drawings
Fig. 1 is the floor map of robust structure provided by the present invention;
Fig. 2 is the representative side section view of robust structure provided by the present invention;
Fig. 3 is the structural representation of gutter provided by the present invention;
Fig. 4 is the schematic cross-section of gutter provided by the present invention;
Fig. 5 is the structural representation of insulation construction provided by the present invention.
Among the figure: 1, arched framework; 21, arch ring; 22, support the gutter; 2, gutter; 21, drain hole; 22, close order gauze; 3, insulation construction; 31, bottom holding plates; 32, the sidewall warming plate; 33, domatic warming plate; 34, the medium coarse sand bed course; 4, the domatic soil body; 5, slope toe wall.
The specific embodiment
For further understanding content of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
As depicted in figs. 1 and 2, the invention discloses a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump, mainly form by arched framework 1, gutter 2 and insulation construction 3.
The side slope surface is equipped with arched framework 1, and arched framework 1 comprises between 21, the two groups of adjacent arch rings 21 of arch ring that divide into groups to be provided with and connecting with supporting gutter 22.
According to cut slope engineering geological conditions, slope angle, sloping height, domatic area, arch ring 21 inherent slope soils 4 surfaces of arched framework 1 are provided with a plurality of gutters 2.Gutter 2 forms certain level interval and vertical spacing according to rectangular array or quincunx arranged in arrays between the tube and tube, generally in 1.5 ~ 2.2m scope, vertical spacing is generally in 1.1 ~ 1.5m scope for level interval.Gutter 2 level of answering is inserted slope soil 4 surfaces, and perhaps slope soil 4 surfaces are inserted with 0 ~ 5 ° of inclination angle downwards in the outer end, and gutter 2 need expose slope soil 4 surfaces, and the length of exposing is generally 10 ~ 30cm.Gutter 2 can be selected PE gutter, PVC gutter or steel gutter for use.
As shown in Figure 3, be drilled with the drain hole 21 of several minor diameters on the gutter 2, the diameter of drain hole 21 is confirmed concrete numerical value according to the slope soil water content, is generally 5 ~ 8mm.Drain hole 21 arranging on gutter 2 also is according to rectangular array or quincunx arranged in arrays.According to certain level and the vertical spacing gutter 2 of arranging, gutter 2 is provided with the drain hole of arranging according to certain rules 21, underground water that can the white-out slope soil, thus reduce the groundwater table and the side slope moisture content of side slope.
As shown in Figure 4, the outer wall of gutter 2, and the end that gutter 2 stretches in the slope soil 4 is enclosed with close order gauze 22.Close order gauze 22 is provided with 1 ~ 5 layer, and the order number of close order gauze 22 is good with 100 ~ 150 orders.Close order gauze 22 can prevent that the fine grained soils in the side slope runs off from gutter 2 and slope soil 4 holes that cause increase and the intensity reduction.
In addition, the side slope bottom is arranged at slope toe wall 5, and slope toe wall 5 specifically can be sheet stone concrete slope toe wall, rubble concrete slope toe wall or jackstone concrete slope toe wall.Slope toe wall 5 can strengthen the stability of side slope, and warming plate is played a protective role, and prolongs the life-span of warming plate.
The above-mentioned job practices that is used to prevent and treat the robust structure of cold district's side slope freeze thawing slump, concrete steps are following:
(1) at first carry out the construction of gutter 2:
(1) accurately measure with the position of transit with each gutter 2, certainty of measurement is controlled in the 0.1mm, and marks with little timber;
(2) drain hole 3 of brill minor diameter on gutter 2, the drain hole 3 of minor diameter is quincuncial arrangement, and the close order gauze 4 with several layers is wrapped in gutter 2 outsides then, and inner top is wrapped up;
(3) build rig odd-job platform in slope drainage pipe 2 bottoms, the odd-job platform will satisfy two people and work simultaneously;
(4) with the artificial boring of hand drill, want strict controlled footage in the drilling process, the degree of depth of each drilling depth is controlled at 0.5 ~ 0.7m, and the underframe of support level rig will firmly be fixed on the side slope, can not shake, and prevents the hole of collapsing;
(5) gutter 2 is put into boring, and around gutter 2, tamp with medium coarse sand, said medium coarse sand is stirred according to 1:1 by medium sand and coarse sand.
(2) secondly carry out the construction of arched framework 1:
(1) press the support gutter 22 of design drawing excavation arched framework 1, will support 22 bottoms, gutter and sidewall usefulness and flatten, concreting then, concrete intensity is C15 ~ C25;
(2) the sidewall concrete block masonry is being supported formation support gutter 22 grooves on 22 concrete of gutter, building block is the ordinary concrete building block, and drainage groove will be built directly along domatic, and the degree of depth of drainage groove is 4 ~ 6cm, and width is 50 ~ 80cm;
(3) excavation arch ring 21 ditches, and in arch ring 21 ditches bottom concreting, build concrete block by laying bricks or stones and form arch ring 21; The domatic arch ring 21 of arranging is up and down answered marshalling, the specification of arch ring 21 concrete blocks is long * wide * thick be 25cm * 20cm * 8cm.
(3) carry out the construction of insulation construction 3 at last:
(1) soil with side slope surface 0.5m thickness excavates, and lays the thick medium coarse sand of 10cm in the bottom, and with medium coarse sand with small-sized vibrator vibration compacting, make the compactness of medium coarse sand reach 0.85 ~ 0.92;
(2) bottom holding plates 31, sidewall warming plate 32 and domatic warming plate 33 are placed on the medium coarse sand; Between bottom holding plates 31, sidewall warming plate 32 and the domatic warming plate 33 EPS plate is glued; The specification of bottom holding plates 31 is long * wide * thick be 2000m * 1500mm * 80mm; The specification of sidewall warming plate 32 for long * wide * thick be 1800mm * 1200mm * 10mm; The specification of domatic warming plate 33 is long * wide * thick be 3000mm * 2000mm * 10mm, the marginal portion is connected with arched framework 1 with concrete, concrete strength is C15 ~ C20;
(3) on bottom holding plates 31, sidewall warming plate 32 and domatic warming plate 33, cover and re-lay the thick medium coarse sand of 10cm, then will before the soil that falls of excavation put and be layered on the medium coarse sand, and carry out hand compaction, compactness will return to the compactness of the soil body before the excavation.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (10)
1. one kind is used to prevent and treat the cold robust structure of distinguishing side slope freeze thawing slump, and the side slope surface is equipped with arched framework, and the side slope bottom is provided with slope toe wall; It is characterized in that,
Be provided with a plurality of gutters in the arch ring of said arched framework; A plurality of said gutters are full sloping according to rectangular array or quincunx arranged in arrays along side slope; Said drain level or surperficial with 0 ~ 5 ° of inclination angle insertion slope soil; The slope soil surface is exposed in said gutter outer end, according to rectangular array or quincunx arranged in arrays a plurality of drain holes is arranged on the said gutter, and the end that said gutter outer wall and said gutter stretch in the slope soil is enclosed with close order gauze;
Said slope toe wall bottom surface is provided with bottom holding plates; Said slope toe wall sidewall is provided with the sidewall warming plate; In the above 3 ~ 5m scope of said slope toe wall; 0.4 ~ 0.6m degree of depth is provided with domatic warming plate below side slope surface, and said bottom holding plates, said sidewall warming plate and said domatic warming plate are through the EPS plate adhesion, and said bottom holding plates, said sidewall warming plate and said domatic warming plate all are arranged in the medium coarse sand bed course.
2. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that slope soil surface 10 ~ 30cm is exposed in said gutter outer end.
3. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that said gutter is 1.5 ~ 2.2m in the level interval of slope soil surface arrangement, and vertical spacing is 1.1 ~ 1.5m.
4. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that said gutter is PE gutter, PVC gutter or steel gutter.
5. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that the diameter of said drain hole is 5 ~ 8mm.
6. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that said close order gauze is provided with 1 ~ 5 layer.
7. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that the order number of said close order gauze is 100 ~ 150 orders.
8. a kind of robust structure that is used to prevent and treat cold district's side slope freeze thawing slump according to claim 1 is characterized in that said slope toe wall is sheet stone concrete slope toe wall, rubble concrete slope toe wall or jackstone concrete slope toe wall.
9. one kind is used to prevent and treat the cold job practices of distinguishing the robust structure of side slope freeze thawing slump according to claim 1, it is characterized in that, comprises the steps:
(1) accurately measures said gutter position with transit, and mark with little timber;
(2) on said gutter, bore said drain hole, said drain hole is quincuncial arrangement, is rolled in said gutter outer wall with said close order bundle then, and its end of stretching in the slope soil is wrapped up;
(3) build rig odd-job platform in the bottom of the said gutter of step (1) position;
(4) with the artificial boring of hand drill, in the drilling process each advanced depth is controlled at 0.5 ~ 0.7m, the underframe fixation of support level rig can not shake on the side slope;
(5) said gutter is put into boring, and around said gutter, tamp with medium coarse sand, said medium coarse sand is stirred according to 1:1 by medium sand and coarse sand;
(6) excavate the support gutter of said arched framework by design drawing, with bottom, said support gutter and sidewall with flattening, concreting then;
(7) the sidewall concrete block masonry is formed the support drainage groove on the concrete of said support gutter;
(8) excavation arch ring ditch, and in arch ring ditch bottom concreting;
(9) soil with side slope surface 0.4 ~ 0.6m thickness excavates, and lays said medium coarse sand in the bottom, and with said medium coarse sand with small-sized vibrator vibration compacting, make its compactness reach 0.85 ~ 0.92;
(10) said bottom holding plates, said sidewall warming plate and said domatic warming plate are placed on the said medium coarse sand; Between said bottom holding plates, said sidewall warming plate and the said domatic warming plate EPS plate is glued, the marginal portion is connected with arched framework with concrete;
(11) on said bottom holding plates, said sidewall warming plate and said domatic warming plate, cover and re-lay said medium coarse sand, then will before the soil that falls of excavation put and be layered on the said medium coarse sand.
10. a kind of cold job practices of distinguishing the robust structure of side slope freeze thawing slump that is used to prevent and treat according to claim 9 is characterized in that concrete strength is C15 ~ C20 described in the said step (10).
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103122622A (en) * | 2013-02-27 | 2013-05-29 | 中国水电顾问集团华东勘测设计研究院 | Pre-fabricated drainage type slope protection structure and construction method thereof |
| CN104846851A (en) * | 2015-05-26 | 2015-08-19 | 中国化学工程第三建设有限公司 | Construction method of foundation-side non-frost-heaving layer |
| CN105735328A (en) * | 2016-04-25 | 2016-07-06 | 杭州江润科技有限公司 | Construction method of stepped mortar-rubble-paved slope of ventilation embankment |
| CN106758892A (en) * | 2016-12-19 | 2017-05-31 | 中交路桥建设有限公司 | A kind of Seasonal freezing areas Freeway draining means of defence |
| CN108071094A (en) * | 2017-11-15 | 2018-05-25 | 深圳市华茂建设工程有限公司 | A kind of construction method of protective slope structure |
| CN108487266A (en) * | 2018-06-01 | 2018-09-04 | 宁夏力丰农机制造有限公司 | A kind of cutting arched framework beam forms |
| CN109024486A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of Han Qu paddles the freeze proof protection against erosion safeguard structure of side slope and its construction method |
| CN109024487A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of guard system and its construction method that cold area's reservoir stability antiseepage is freeze proof |
| CN109403360A (en) * | 2018-12-13 | 2019-03-01 | 黑龙江省公路科学研究院 | It is a kind of to help the roadbed side slope freeze-thaw and sliding control method for melting integrate draining based on dot matrix |
| CN109853595A (en) * | 2019-03-28 | 2019-06-07 | 中交第二公路勘察设计研究院有限公司 | Cut slope salivary flow ice safeguard structure and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122622A (en) * | 2013-02-27 | 2013-05-29 | 中国水电顾问集团华东勘测设计研究院 | Pre-fabricated drainage type slope protection structure and construction method thereof |
| CN103122622B (en) * | 2013-02-27 | 2015-06-03 | 中国水电顾问集团华东勘测设计研究院 | Pre-fabricated drainage type slope protection structure and construction method thereof |
| CN104846851A (en) * | 2015-05-26 | 2015-08-19 | 中国化学工程第三建设有限公司 | Construction method of foundation-side non-frost-heaving layer |
| CN105735328A (en) * | 2016-04-25 | 2016-07-06 | 杭州江润科技有限公司 | Construction method of stepped mortar-rubble-paved slope of ventilation embankment |
| CN106758892A (en) * | 2016-12-19 | 2017-05-31 | 中交路桥建设有限公司 | A kind of Seasonal freezing areas Freeway draining means of defence |
| CN108071094A (en) * | 2017-11-15 | 2018-05-25 | 深圳市华茂建设工程有限公司 | A kind of construction method of protective slope structure |
| CN108487266A (en) * | 2018-06-01 | 2018-09-04 | 宁夏力丰农机制造有限公司 | A kind of cutting arched framework beam forms |
| CN109024486A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of Han Qu paddles the freeze proof protection against erosion safeguard structure of side slope and its construction method |
| CN109024487A (en) * | 2018-09-04 | 2018-12-18 | 中交第二公路勘察设计研究院有限公司 | A kind of guard system and its construction method that cold area's reservoir stability antiseepage is freeze proof |
| CN109403360A (en) * | 2018-12-13 | 2019-03-01 | 黑龙江省公路科学研究院 | It is a kind of to help the roadbed side slope freeze-thaw and sliding control method for melting integrate draining based on dot matrix |
| CN109853595A (en) * | 2019-03-28 | 2019-06-07 | 中交第二公路勘察设计研究院有限公司 | Cut slope salivary flow ice safeguard structure and method |
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