CN101560775A - Composite soil nailing wall structure - Google Patents
Composite soil nailing wall structure Download PDFInfo
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- CN101560775A CN101560775A CNA200810089046XA CN200810089046A CN101560775A CN 101560775 A CN101560775 A CN 101560775A CN A200810089046X A CNA200810089046X A CN A200810089046XA CN 200810089046 A CN200810089046 A CN 200810089046A CN 101560775 A CN101560775 A CN 101560775A
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- soil nailing
- soil
- wall structure
- nailing wall
- prestressed anchor
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Abstract
The invention provides a composite soil nailing wall structure comprising a waterproof curtain, soil nails, a sprayed concrete surface layer and prestressed anchor rods, wherein the waterproof curtain is arranged perpendicularly to the ground; the sprayed concrete surface layer is arranged outside the waterproof curtain; the soil nails and the prestressed anchor rods are arranged alternately, and the included angles of each soil nail and each prestressed anchor rod with the ground are great than 30 degrees; the waterproof curtain is in a single layer or double-layer structure and is a deep mixing pile or a high pressure rotary jetting pile; the soil nails are bore grouting section steel pipe soil nails, and the soil nailing steel pipe is uniformly provided with grout outlets; the thickness of the sprayed concrete surface layer is one centimeter; the diameter of the deep mixing pile or the high pressure rotary jetting pile is 400-500 millimeters; the prestressed anchor rod is provided with barbs; and the aperture of the grout outlet is four millimeters. The soil nailing wall structure greatly reduces the displacement of the soil nailing wall, improves the safety of engineering, and meets the requirements of different actual engineering.
Description
Technical field
The invention belongs to the foundation structure field, especially a kind of composite soil nailing wall structure.
Background technology
The soil nailing wall is a kind of novel soil-baffling structure that development in recent years gets up to be used for soil excavation and stability of slope, it is by being reinforced the soil body, placing the soil nailing in the original position soil body and be attached to domatic sprayed mortar panel and form, form the retaining wall of a similar gravity, come the soil pressure that transmits after the resistance wall and other active force with this, thereby make the excavation slope stability.The soil nailing wall generally is applicable to the above or artificial earth fill after artificial rainmaking of groundwater table, the pattern foundation pit supporting structure of cohesive soil and weak glued sand, cutting depth is generally at 5～12m, and this traditional soil nailing wall form is used in many cases and is restricted, and can not satisfy the needs of actual engineering.
Summary of the invention
The objective of the invention is to propose a kind of composite soil nailing wall structure,, satisfy the demand of progressive and actual engineering to solve the problems of the prior art.
Technical scheme of the present invention is as follows, a kind of composite soil nailing wall structure, this structure is made up of water-stop curtain, soil nailing, sprayed mortar surface layer and prestressed anchor, wherein water-stop curtain is provided with perpendicular to ground, the sprayed mortar surface layer is in the water-stop curtain outside, soil nailing and prestressed anchor are provided with at interval, and the angle between soil nailing, prestressed anchor and the ground is greater than 30 degree.Water-stop curtain is individual layer or double-decker.Water-stop curtain is deep-mixed pile or high-pressure rotary jet grouting pile.Soil nailing is boring slip casting shape steel tube soil nailing.Evenly arrange slurry outlet on the described soil nailing steel pipe.: described sprayed mortar surface thickness is 1 centimetre.Described deep-mixed pile or high-pressure rotary jet grouting pile diameter are 400 millimeters～500 millimeters.Have hangnail on the described prestressed anchor.Described slurry outlet aperture is 4 millimeters.
The invention has the beneficial effects as follows: the water-stop curtain in the water stopping type soil nailing wall, except that making the sealing function, the effect of strengthening stratum and stable excavation face is usually arranged, so the intensity to stirring or rotary churning pile has certain requirement, deep-mixed pile or rotary churning pile that its cement mixing content is also conventional are high, and often select the early-strength cement type for use.The novel soil nailing of the normal use of soil nailing in the water stopping type soil nailing wall is promptly squeezed into slip casting shape steel tube soil nailing, to avoid pore-forming problem and the seepy question in layer of sand or weak soil.Reinforced soil nailing wall is on the basis of water stopping type soil nailing wall or soil nailing wall, over-large displacement for restriction soil nailing wall, 1～2 row's prestressed anchor is set at soil nailing wall middle part, the soil nailing wall is applied initial back of the body pulling force, significantly reduced the displacement of soil nailing wall like this, improve the degree of safety of engineering, satisfy the needs of different actual engineerings.Prestressed anchor can adopt steel strand prestress anchor cable and prestressed, reinforced anchor pole, also can adopt the steel pipe prestressed anchor, the anchor pole anchor head must be connected with the sprayed mortar surface layer reliably, bearing plate or reinforced concrete beam can be set, anchor head bearing plate size should be enough big, so that axis force of anchor is delivered in the soil nailing wall and the soil body effectively.
Description of drawings
Below in conjunction with drawings and Examples invention is described further.
Fig. 1 is the structural representation of one embodiment of the present invention.
The specific embodiment
Be example with Fig. 1 below, technical solution of the present invention is elaborated.
A kind of composite soil nailing wall structure, this structure is made up of water-stop curtain 2, soil nailing 3, sprayed mortar surface layer 1 and prestressed anchor 4, wherein water-stop curtain 2 is provided with perpendicular to ground, sprayed mortar surface layer 1 is in the water-stop curtain outside, soil nailing 3 and prestressed anchor 4 are provided with at interval, and the angle between soil nailing 3, prestressed anchor 4 and the ground is greater than 30 degree.Water-stop curtain 2 is individual layer or double-decker.Water-stop curtain 2 is deep-mixed pile or high-pressure rotary jet grouting pile.Soil nailing 3 is boring slip casting shape steel tube soil nailing.Evenly arrange slurry outlet on the described soil nailing steel pipe.: described sprayed mortar surface thickness is 1 centimetre.Described deep-mixed pile or high-pressure rotary jet grouting pile diameter are 400 millimeters～500 millimeters.Have hangnail on the described prestressed anchor.Described slurry outlet aperture is 4 millimeters.
Be described and illustrate with reference to the specific embodiment although it should be noted that the present invention, and in the specific embodiment, provided a kind of concrete structure.But and do not mean that the present invention is limited to the embodiment of these descriptions.Those skilled in the art can therefrom derive many different variants, and they all will be covered in the true spirit and scope of claim of the present invention.
Claims (9)
1. composite soil nailing wall structure, it is characterized in that: this structure is made up of water-stop curtain, soil nailing, sprayed mortar surface layer and prestressed anchor, wherein water-stop curtain is provided with perpendicular to ground, the sprayed mortar surface layer is in the water-stop curtain outside, soil nailing and prestressed anchor are provided with at interval, and the angle between soil nailing, prestressed anchor and the ground is greater than 30 degree.
2. soil nailing wall structure according to claim 1 is characterized in that: water-stop curtain is individual layer or double-decker.
3. soil nailing wall structure according to claim 2 is characterized in that: water-stop curtain is deep-mixed pile or high-pressure rotary jet grouting pile.
4. according to claim 1 or 3 described soil nailing wall structures, it is characterized in that: soil nailing is boring slip casting shape steel tube soil nailing.
5. soil nailing wall structure according to claim 4 is characterized in that: evenly arrange slurry outlet on the described soil nailing steel pipe.
6. soil nailing wall structure according to claim 1 is characterized in that: described sprayed mortar surface thickness is 1 centimetre.
7. soil nailing wall structure according to claim 3 is characterized in that: described deep-mixed pile or high-pressure rotary jet grouting pile diameter are 400 millimeters～500 millimeters.
8. soil nailing wall structure according to claim 1 and 2 is characterized in that: have hangnail on the described prestressed anchor.
9. soil nailing wall structure according to claim 5 is characterized in that: described slurry outlet aperture is 4 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810089046XA CN101560775A (en) | 2008-04-16 | 2008-04-16 | Composite soil nailing wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810089046XA CN101560775A (en) | 2008-04-16 | 2008-04-16 | Composite soil nailing wall structure |
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| Publication Number | Publication Date |
|---|---|
| CN101560775A true CN101560775A (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200810089046XA Pending CN101560775A (en) | 2008-04-16 | 2008-04-16 | Composite soil nailing wall structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155015A (en) * | 2011-03-01 | 2011-08-17 | 中国有色金属工业昆明勘察设计研究院 | Barbed implanted steel pipe anchor rod |
| CN102912798A (en) * | 2012-11-06 | 2013-02-06 | 山东兴华建设集团有限公司 | Compound soil nail wall foundation pit supporting method |
| CN103015436A (en) * | 2013-01-01 | 2013-04-03 | 中国建筑西南勘察设计研究院有限公司 | Cemented-type water-blocking curtain and anchor pulling pile compounded supporting structure |
| CN103452118A (en) * | 2013-03-22 | 2013-12-18 | 中国建筑股份有限公司上海分公司 | Foundation pit slope soil-nailing dewatering support construction method |
| CN105951823A (en) * | 2016-03-29 | 2016-09-21 | 中铁时代建筑设计院有限公司 | Soft soil foundation treatment and construction method by using mixing pile and anti-floating anchor rod |
| CN106049504A (en) * | 2016-06-12 | 2016-10-26 | 青岛海川建设集团有限公司 | Construction method for optimizing corner structure of pile-anchor support system of deep foundation pit through space effect |
| CN107119692A (en) * | 2017-05-03 | 2017-09-01 | 中交航局第工程有限公司 | A kind of Soft Deep Foundation Pit support construction process |
| CN109881681A (en) * | 2019-03-13 | 2019-06-14 | 中国十七冶集团有限公司 | The construction method of deep foundation ditch combination supporting scheme under a kind of complex environment |
| CN112854245A (en) * | 2021-03-17 | 2021-05-28 | 山东大学 | Classification design method for earth rock foundation pit support based on depth and medium-stroke fossil rock burial depth |
-
2008
- 2008-04-16 CN CNA200810089046XA patent/CN101560775A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155015A (en) * | 2011-03-01 | 2011-08-17 | 中国有色金属工业昆明勘察设计研究院 | Barbed implanted steel pipe anchor rod |
| CN102912798A (en) * | 2012-11-06 | 2013-02-06 | 山东兴华建设集团有限公司 | Compound soil nail wall foundation pit supporting method |
| CN103015436A (en) * | 2013-01-01 | 2013-04-03 | 中国建筑西南勘察设计研究院有限公司 | Cemented-type water-blocking curtain and anchor pulling pile compounded supporting structure |
| CN103015436B (en) * | 2013-01-01 | 2015-07-08 | 中国建筑西南勘察设计研究院有限公司 | Cemented-type water-blocking curtain and anchor pulling pile compounded supporting structure |
| CN103452118A (en) * | 2013-03-22 | 2013-12-18 | 中国建筑股份有限公司上海分公司 | Foundation pit slope soil-nailing dewatering support construction method |
| CN103452118B (en) * | 2013-03-22 | 2015-10-14 | 中国建筑股份有限公司上海分公司 | A kind of excavation slope soil nailing de-watering and shoring construction method |
| CN105951823A (en) * | 2016-03-29 | 2016-09-21 | 中铁时代建筑设计院有限公司 | Soft soil foundation treatment and construction method by using mixing pile and anti-floating anchor rod |
| CN106049504A (en) * | 2016-06-12 | 2016-10-26 | 青岛海川建设集团有限公司 | Construction method for optimizing corner structure of pile-anchor support system of deep foundation pit through space effect |
| CN107119692A (en) * | 2017-05-03 | 2017-09-01 | 中交航局第工程有限公司 | A kind of Soft Deep Foundation Pit support construction process |
| CN109881681A (en) * | 2019-03-13 | 2019-06-14 | 中国十七冶集团有限公司 | The construction method of deep foundation ditch combination supporting scheme under a kind of complex environment |
| CN112854245A (en) * | 2021-03-17 | 2021-05-28 | 山东大学 | Classification design method for earth rock foundation pit support based on depth and medium-stroke fossil rock burial depth |
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Open date: 20091021 |