CN102767159A - Strengthening method for existing revetments of urban river - Google Patents
Strengthening method for existing revetments of urban river Download PDFInfo
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- CN102767159A CN102767159A CN2012102711297A CN201210271129A CN102767159A CN 102767159 A CN102767159 A CN 102767159A CN 2012102711297 A CN2012102711297 A CN 2012102711297A CN 201210271129 A CN201210271129 A CN 201210271129A CN 102767159 A CN102767159 A CN 102767159A
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Abstract
The invention relates to a strengthening method for existing revetments of an urban river. The method comprises the following steps: (1), constructing densely-arranged wooden piles on a river bed close to an existing rubble-mound base and mounting rubbles to strengthen the revetment base; (2), driving small-diameter steel pipes with small lateral holes into a revetment soil mass, and carrying out micro-pressure grouting to small-diameter steel pipes to strengthen the revetment soil mass; and (3), paving a reinforced concrete surface layer on the upper surface of the revetment soil mass. The method is carried out in a manner of sticking in a pin in any space, is low in restriction to site environment, simple in construction process, quick in construction speed, high in cost performance and strong in maneuverability, and is especially suitable for revetments with dense municipal pipelines and trees. Cement slurry is dispersed into a ground layer through a plurality of small holes, so that the cement slurry can be uniformly poured to the ground layer, thereby the adverse effect on the existing revetments in the construction process is avoided.
Description
Technical field
The present invention relates to the existing revetment reinforcement means of a kind of city inland river, belong to municipal engineering.
Background technology
Interior comprehensive administration of river is to strengthen the urban flood defence ability, improve city taste, improve environment, the beautifying city, benefit pressing for of resident.The primary technical problem of comprehensive improvement is the clear what in river course, embankment line taking rationalization and revetment trimming.Existing city inland river revetment is to build successively nearly decades, laid dry mostly, and the basis is shallow, the body of wall globality is poor, does not meet existing related specifications requirement fully, should remove reconstruction in theory.Yet the city inland river two sides all are that surface structures gathers, the underground utilities solid matter usually, and trees are various on the embankment, and these unfavorable factors have proposed strict requirement to revetment reformation construction technology.
The revetment failure mode is broadly divided into three kinds: (1), revetment masonry destroy, and main forms has revetment cracking, external drum and revetment to be emptied etc., and this is one of main failure mode.(2), revetment caves in, and belongs to the destruction of toppling.(3), bank slope landslide.Revetment and its rear section soil body produce general shear failure along a certain weak slide plane (band), and slide plane generally is arranged in mud, the normal camber nest of sliding mass shape, and this type destructive power is big, danger and harmfulness maximum.
Qualified revetment should satisfy wall body masonry quality and require and the requirement of revetment monolithic stability.To wall body quality problems, to destroyed and masonry sex change section, considered is removed, and rebuilds by existing gravity barricade requirement, and to what can not remove, but Considering Surface is pasted the method for building reinforced concrete wall reinforcement masonry; For bank slope monolithic stability property improvement, can consider that descending grade off-load, foot reinforce and revetment self soil stabilization, can consider to adopt high-pressure rotary jet grouting pile, agitation pile, lime pile, root pile on the engineering, towards methods such as drilled piles.The utilization of concrete grammar should be taken all factors into consideration factors such as engineering geological conditions, surrounding environment, construction period, stream stage, dirt removal requirement, economical cost.
As stated, the renovation of Urban River construction is greatly limited by environment, and many methods of above-mentioned reinforcing revetment all are difficult to carry out, and said method mostly has big adverse effect to existing revetment when implementing.
Summary of the invention
The object of the present invention is to provide the existing revetment reinforcement means of a kind of city inland river; This method receives that the restriction of place environment is little, construction technology is simple, speed of application is fast, cost performance is high, workable, be particularly useful for the revetment that municipal pipeline is intensive, trees are intensive.
Technical program of the present invention lies in: the existing revetment reinforcement means of a kind of city inland river, comprise the revetment soil body, riverbed, existing pierre-perdue and existing revetment wall body, carry out according to the following steps:
(1) reinforces the revetment pin at place, riverbed construction solid matter timber and jackstone near existing pierre-perdue;
The minor-diameter steel-tube that (2) will have the side direction aperture is squeezed in the revetment soil body, and minor-diameter steel-tube is carried out minute-pressure slip casting, to reinforce the revetment soil body;
(3) lay the steel bar concrete surface layer at the upper surface of the revetment soil body.
Adopt the existing revetment ruggedized construction of the formed a kind of city inland river of said method; It comprises the revetment soil body, riverbed, existing pierre-perdue and existing revetment wall body; The riverbed of said existing pierre-perdue front side is provided with the solid matter timber; And the external part of not squeezing into fully in the riverbed is left in the upper end of said solid matter timber, also is provided with the jackstone underpinning on said existing pierre-perdue and the riverbed, existing revetment wall body front side, and said jackstone underpinning covers the external part of solid matter timber; The said revetment soil body is pressed into some minor-diameter steel-tubes that have the side direction aperture from top to bottom; Pour into cement grout in the said minor-diameter steel-tube, to reinforce the revetment soil body, the upper surface of the said revetment soil body is equipped with the steel bar concrete surface layer.
The invention has the beneficial effects as follows: the method that adopts the minor-diameter steel-tube stake and the minute-pressure grouting and reinforcing revetment soil body to combine solid matter timber, jackstone to reinforce the revetment pin can greatly promote the riverbank resistance to overturning.This this method is implemented with the form of " seizing every opportunity ", receive the restriction of place environment little, construction technology is simple, speed of application is fast, cost performance is high, workable, be particularly useful for the revetment that municipal pipeline is intensive, trees are intensive.Because of cement grout is to disperse to get into the stratum through many apertures, so cement grout can inject the stratum more equably, when having avoided implementing to the adverse effect of existing revetment.
Description of drawings
Fig. 1 is the existing revetment ruggedized construction of the city inland river among an embodiment sketch map.
Label declaration: the upper surface 5.1-external part 9-trees 10-present situation municipal pipeline in the existing revetment wall of the existing pierre-perdue 4-of 1-revetment soil body 2-riverbed 3-body 5-timber 6-jackstone underpinning 7-minor-diameter steel-tube 8-steel bar concrete surface layer 2.1-riverbed.
The specific embodiment
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs., elaborate as follows, but the present invention is not limited to this.
The existing revetment reinforcement means of city inland river of the present invention comprises the revetment soil body 1, riverbed 2, existing pierre-perdue 3 and existing revetment wall body 4, carries out according to the following steps:
(1) reinforces the revetment pin at 2 places, riverbed construction solid matter timber 5 and jackstone, form jackstone underpinning 6 near existing pierre-perdue 3;
The minor-diameter steel-tube 7 that (2) will have the side direction aperture is squeezed in the revetment soil body 1, and minor-diameter steel-tube 7 is carried out minute-pressure slip casting, to reinforce the revetment soil body 1;
(3) lay steel bar concrete surface layer 8 at the upper surface of the revetment soil body 1.
In the present embodiment, adopt drilling tools on the revetment soil body 1, to get out a hole in the above-mentioned steps (2), be pressed into minor-diameter steel-tube 7 with holes, again the mode of cement grout with infiltration poured in the soil body hole.In a preferable enforcement, the pore-forming mode on the revetment soil body 1 helps protecting the revetment soil body for doing the operation pore-forming, prevents in construction the destruction of the revetment soil body, causes accident such as cave in.Certainly the present invention is not limited to do the operation pore-forming.
In the present embodiment, after cement grout slip casting was accomplished in the above-mentioned steps (2), minor-diameter steel-tube 7 was retained in the revetment soil body.
In the present embodiment, the upper surface that is lower than riverbed 2 bottom 2.1 of said minor-diameter steel-tube 7.As a kind of preferred version, said minor-diameter steel-tube 7 be lower than solid matter timber 5 bottom bottom.
In the present embodiment, said minor-diameter steel-tube 7 is pressed blossom type layout or rectangular arrangement.
Adopt the existing revetment ruggedized construction of the formed city inland river of said method; It comprises the revetment soil body 1, riverbed 2, existing pierre-perdue 3 and existing revetment wall body 4; The riverbed 2 of said existing pierre-perdue 3 front sides is provided with solid matter timber 5; And the external part of not squeezing into fully in the riverbed 2 5.1 (stake top) is left in the upper end of said solid matter timber 5; Also be provided with jackstone underpinning 6 on said existing pierre-perdue 3 and the riverbed, existing revetment wall body front side 2, and said jackstone underpinning 6 covers the external part 5.1 (stake top) of solid matter timbers 5.
In the present embodiment, the said revetment soil body 1 is pressed into some minor-diameter steel-tubes 7 that have the side direction aperture from top to bottom, pours into cement grout in the said minor-diameter steel-tube 7, to reinforce the revetment soil body 1.
In the present embodiment, the upper surface of the said revetment soil body 1 is equipped with steel bar concrete surface layer 8.
In the present embodiment, the upper surface that is lower than riverbed 2 bottom 2.1 of said minor-diameter steel-tube 7.As a kind of preferred version, said minor-diameter steel-tube 7 be lower than solid matter timber 5 bottom bottom.
In the present embodiment, said minor-diameter steel-tube 7 is pressed blossom type layout or rectangular arrangement.
Minor-diameter steel-tube stake grouting and reinforcing is to push up with the drilling tools pore-forming at revetment, is pressed into steel pipe with holes, the mode of cement grout with infiltration is poured in the soil body hole again.The gelling of cement grout, solidification have been improved the physical and mechanical property index of the soil body effectively, have improved soil strength; Floral tube was retained in the soil layer after slip casting was accomplished, and had played the reinforcement body simultaneously, had improved soil layer bearing capacity and antiskid and had moved ability, had improved the security and stability of side slope effectively.
Little steel pipe can arrange or rectangular arrangement that cloth row of piles number, pile length are confirmed by calculating, and require to meet antiskid and move and the overturning or slip resistance analysis checking computations by blossom type.
Grouting pressure should strictly be controlled, and it is good directly irritating core.
At toe injection solid matter timber, increase sloping body shear strength, the sloping thrust body that top is born through pile body is passed to the side direction soil body of a bottom, relies on the lateral resistance of stake bottom to bear the following thrust of side slope, thereby makes side slope keep balance or stable.The main sliding direction that timber should vertically come down is in a row laid, and the solid matter timber also can avoid mud to extrude between stake.
These method characteristics are to gather materials on the spot, make things convenient for, be easy to construction.During practice of construction, utilize the small-sized digging machine of equipping on the barge waterborne to be pressed into, stake top (toe) is fill block stone throwing again, and back-pressure is anti-skid.
During practical implementation, should construct solid matter timber and jackstone are reinforced the revetment pin in advance, adopt the minor-diameter steel-tube stake and the minute-pressure grouting and reinforcing revetment soil body again.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. the existing revetment reinforcement means of city inland river comprises the revetment soil body, riverbed, existing pierre-perdue and existing revetment wall body, it is characterized in that, carries out according to the following steps:
(1) reinforces the revetment pin at place, riverbed construction solid matter timber and jackstone near existing pierre-perdue;
The minor-diameter steel-tube that (2) will have the side direction aperture is squeezed in the revetment soil body, and minor-diameter steel-tube is carried out minute-pressure slip casting, to reinforce the revetment soil body;
(3) lay the steel bar concrete surface layer at the upper surface of the revetment soil body.
2. the existing revetment reinforcement means of city inland river according to claim 1 is characterized in that: adopt drilling tools on the revetment soil body, to get out a hole, be pressed into minor-diameter steel-tube with holes, the mode of cement grout with infiltration poured in the soil body hole again.
3. the existing revetment reinforcement means of city inland river according to claim 1 and 2 is characterized in that: after cement grout slip casting was accomplished, minor-diameter steel-tube was retained in the revetment soil body.
4. the existing revetment reinforcement means of city inland river according to claim 1 and 2 is characterized in that: said minor-diameter steel-tube is pressed blossom type and is arranged or rectangular arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102711297A CN102767159A (en) | 2012-08-02 | 2012-08-02 | Strengthening method for existing revetments of urban river |
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| CN2012102711297A CN102767159A (en) | 2012-08-02 | 2012-08-02 | Strengthening method for existing revetments of urban river |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321204A (en) * | 2013-05-24 | 2013-09-25 | 同济大学 | Treating method applicable to deep soft soil foundation of warehouse building floors |
| CN106894386A (en) * | 2017-04-14 | 2017-06-27 | 上海勘测设计研究院有限公司 | Construction system and construction method for reinforcing river course revetment |
| CN114908729A (en) * | 2022-06-01 | 2022-08-16 | 湖北郢都水利水电建设有限公司 | Construction method for treating sludge soft foundation by using fir piles |
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| CN102080381A (en) * | 2010-12-31 | 2011-06-01 | 佛山市顺德电力设计院有限公司 | Method for managing landslip of side slope landslide for transformer substation |
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| CN202323960U (en) * | 2011-11-23 | 2012-07-11 | 天津住宅集团建设工程总承包有限公司 | Shallow foundation pit forming construction structure capable of ensuring slope stability |
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2012
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| KR20080000156A (en) * | 2006-06-26 | 2008-01-02 | 김흥섭 | Construction method of shore block |
| CN102080381A (en) * | 2010-12-31 | 2011-06-01 | 佛山市顺德电力设计院有限公司 | Method for managing landslip of side slope landslide for transformer substation |
| CN202323960U (en) * | 2011-11-23 | 2012-07-11 | 天津住宅集团建设工程总承包有限公司 | Shallow foundation pit forming construction structure capable of ensuring slope stability |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321204A (en) * | 2013-05-24 | 2013-09-25 | 同济大学 | Treating method applicable to deep soft soil foundation of warehouse building floors |
| CN103321204B (en) * | 2013-05-24 | 2016-02-17 | 同济大学 | Be applicable to the processing method of the deep soft soil foundation of storage building ground floor |
| CN106894386A (en) * | 2017-04-14 | 2017-06-27 | 上海勘测设计研究院有限公司 | Construction system and construction method for reinforcing river course revetment |
| CN114908729A (en) * | 2022-06-01 | 2022-08-16 | 湖北郢都水利水电建设有限公司 | Construction method for treating sludge soft foundation by using fir piles |
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Application publication date: 20121107 |