CN205369243U - Take soil nail that prestretches of stiffening rib - Google Patents
Take soil nail that prestretches of stiffening rib Download PDFInfo
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- CN205369243U CN205369243U CN201521031927.8U CN201521031927U CN205369243U CN 205369243 U CN205369243 U CN 205369243U CN 201521031927 U CN201521031927 U CN 201521031927U CN 205369243 U CN205369243 U CN 205369243U
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- soil nailing
- ribs
- nailing
- soil nail
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Abstract
The utility model relates to a take soil nail that prestretches of stiffening rib. Its characterized in that includes: soil nail, position casing, stiffening rib and directional spring, lie in the end part beyond the glide plane at soil nail, welding position sleeve pipe straggly inserts in position casing and strengthens the rib steel muscle, and its one end is processed into the tip form, and the other end has been bent with the location, is strengthening the directional spring of welding between rib steel muscle and the soil nail reinforcing bar. The utility model discloses not only be applicable to the foundation ditch or the side slope support on general stratum, there is extremely extensive engineering application on szyrt, weak soil, the thick miscellaneous bad stratum such as soil and sand gravel of banketing, expand by force of being applicable to in line in fields such as ground high slope, deep basal pit lateral wall, railway and highway tunnel, subway, pier, bridges and culverts, harbour, road bed, dykes and dams, mines.
Description
Technical field
This utility model relates to a kind of prestretching soil nailing with ribs, it is applicable not only to foundation ditch or the slope retaining on general stratum, still it is applicable to the poor stratas such as quicksand, weak soil, thick miscellaneous fill, strong swelling soil and sand gravel, has engineer applied extremely widely in fields such as ground high slope, deep-foundation side wall, Rail Highway tunnel, subway, bridge pier, bridges and culverts, harbour, roadbed, dykes and dams, mines.
Background technology
Keeping a kind of soil-baffling structure of foundation pit side-wall or stability of slope when soil nail wall is for soil excavation, compared with other Support types, plate brad supporting has: the self-stable ability of the Appropriate application soil body；Structure is light-duty, flexible big, has good shock resistance and ductility；The required place of construction is little, mobile flexible；Speed of application is fast；Construction equipment and technique are simple；Feature or the advantages such as material usage and quantities are less, and construction costs is relatively low, be widely used in the every field such as side slope, foundation ditch, highway, railway traffic, water conservancy and subway.
The mechanism of action of Soil-Nailing Wall Structure substantially can be considered: being acted on the soil improvement of the action zone in dangerous sliding surface by reinforcement etc. is the compound soil body with certain stability, simultaneously using the compound soil body as load, it is delivered to the steady soil after most dangerous sliding surface to obtain safety stock by soil nailing, makes the compound soil body within the scope of soil-nail parameter have enough self-stable abilities and anti-additional load ability.Soil nailing plays a leading role in retaining wall structure, and it can be summarized as in the effect of the compound soil body: (1) hoop bundle skeleton function.Soil nailing governs the deformation of the soil body, makes to form soil arch between soil nailing so that the compound soil body obtains bigger bearing capacity, and the compound soil body is constituted an entirety.(2) primary load effect is undertaken: soil nailing has the bending rigidity that higher tension, shearing strength and the soil body are incomparable, so after the soil body enters mecystasis, stress shifts to soil nailing gradually, has delayed carrying out and the appearance in progressive cracking face of compound soil body plastic zone.(3) Stress Transfer and diffusion.Relying on the interaction of soil nailing and soil, the load born along the diffusion of the total length soil body towards periphery and is transmitted by soil nailing to the depths soil body, and stress level and intensity in composite earth body are substantially reduced than element soil side slope, thus having postponed formation and the development of cracking.(4) to domatic effect of contraction.Soil nailing makes surface layer be in close contact so that surface layer plays a role effectively with the soil body, limits domatic tympanites, weakens internal plastic deformation, strengthens boundary constraint.(5) soil mass consolidation effect.The intensity of in-situ soil is improve mainly by the crowd in-out effects of osmotic grouting or driving into type soil nailing.
But, the common recognition generally reached of current engineering circles is: soil nail wall belongs to light-duty supporting construction, soil nailing, surface layer rigidity all less, support system deformation is relatively large, therefore, for the place that deformation requirements is comparatively strict, soil nail wall is general it is not recommended that adopt or use with caution.This also limits the more broadly application of this convenient-to-running support technology of soil nail wall to a certain extent.
Utility model content
nullIn view of this，In order to overcome plate brad supporting system to deform relatively large defect，Improve soil nailing loading sharing effect in whole support system simultaneously further and strengthen the soil nailing effect of contraction to support system surface layer，The utility model proposes a kind of simple in construction，Make easily，Low cost，Easy to operate，The service-strong prestretching Soil-Nailing Wall Structure with ribs，Mainly by being in the mode installing ribs on the soil nailing of steady soil part beyond dangerous sliding surface，Expand the interaction volume of soil nailing and the soil body，Reduce stress level and the intensity of nail-soil acting surface，Strengthen soil nailing anchoring ability in steady soil，Thus reaching to improve the loading sharing being positioned at the outer soil nailing of dangerous sliding surface and the soil nailing purpose to the restraining forces of surface layer，So that the service behaviour of soil nailing is further promoted，Obtain higher safety stock.
A kind of prestretching soil nailing with ribs, it is characterised in that including: soil nailing, locating sleeve, ribs and directed spring；
Being positioned at the end portion beyond slide surface, welding locating sleeve straggly at soil nailing, be inserted into ribs reinforcing bar at locating sleeve, cusp-shaped is processed in its one end, and the other end bends up with location, welds directed spring between ribs reinforcing bar with soil nailing reinforcing bar.
Further, welding locating sleeve straggly, it is specially lateral symmetry welding locating sleeve, and lateral symmetry welding locating sleeve again after being spaced a distance, form dislocation and arrange general layout.
Further, the length of sleeve pipe is slightly less than the diameter of soil nailing.
Further, the diameter of sleeve pipe takes ribs bar diameter+2mm.
This utility model be the technical scheme is that a kind of prestretching Soil-Nailing Wall Structure with ribs, and main ingredient includes: soil nailing, locating sleeve, ribs reinforcing bar, directed spring.By being positioned on the end portion beyond dangerous sliding surface at soil nailing, according to arrangement straggly, lateral symmetry at soil nailing welds locating sleeve, and (length of sleeve pipe takes the diameter being slightly less than soil nailing, the diameter of sleeve pipe takes ribs bar diameter+2mm, namely slightly larger than ribs bar diameter), then it is inserted into one end at locating sleeve and is processed into the ribs reinforcing bar of cusp-shaped, and its other end (undressed one end) bent up with location, afterwards in the middle part of ribs reinforcing bar with weld orientation spring between soil nailing.
The utility model has the advantages that:
1) expand the interaction volume of soil nailing and the soil body, reduce nail-soil interaction face stress level and intensity；
2) soil nailing anchoring ability in steady soil is strengthened, thus improve the anti-pulling capacity of soil nailing；
3) improve the loading sharing being positioned at the outer soil nailing of dangerous sliding surface and the soil nailing restraining forces to surface layer；So that the service behaviour of soil nailing is further promoted.
Accompanying drawing explanation
The Fig. 1 prestretching soil nailing side view with ribs
The Fig. 2 prestretching soil nailing top view with ribs
The connecting structure A-A profile of Fig. 3 a locating sleeve and soil nailing
The connecting structure B-B profile of Fig. 3 b locating sleeve and soil nailing
Below in conjunction with accompanying drawing, this utility model is further illustrated.
Wherein: 1-soil nailing, 2-ribs reinforcing bar, 3-locating sleeve, 4-orientation spring, 5-weld seam.
Detailed description of the invention
Equipment is installed and the detailed description of the invention of operation:
1, it is positioned on the end portion beyond dangerous sliding surface at soil nailing, according to arrangement straggly, lateral symmetry at soil nailing welds locating sleeve, and (the length l of sleeve pipe takes the diameter Ф being slightly less than soil nailing, the diameter D of sleeve pipe takes ribs bar diameter d+2mm, namely slightly larger than ribs bar diameter), the distance L of two adjacent groups sleeve pipe is preferably greater than the soil nailing diameter Ф (concrete ribbed stiffener group is several to be determined) of 10 times according to actual condition；
2, being inserted into one end at mounted locating sleeve and be processed into the ribs reinforcing bar of cusp-shaped, and bent up by its other end (undressed one end) with location, the length of the non-bending part of ribs reinforcing bar is preferably greater than the soil nailing diameter Ф of 5 times；
3, in the middle part of ribs reinforcing bar with weld directed spring between soil nailing, the performance of directed spring is so that ribs reinforcing bar most advanced and sophisticated putting at soil nailing can be close to hole wall and be advisable in process in hole；
4, after soil nailing is put into hole design attitude, artificial prestretching soil nailing, make ribs insert location, slip casting in the hole wall soil body, complete nail Construction.
Claims (4)
1. the prestretching soil nailing with ribs, it is characterised in that including: soil nailing, locating sleeve, ribs and directed spring；
Being positioned at the end portion beyond slide surface, welding locating sleeve straggly at soil nailing, be inserted into ribs reinforcing bar at locating sleeve, cusp-shaped is processed in its one end, and the other end bends up with location, welds directed spring between ribs reinforcing bar with soil nailing reinforcing bar.
2. a kind of prestretching soil nailing with ribs according to claim 1, it is characterised in that: welding locating sleeve straggly, it is specially lateral symmetry welding locating sleeve, and lateral symmetry welding locating sleeve again after being spaced a distance, form dislocation and arrange general layout.
3. a kind of prestretching soil nailing with ribs according to claim 1, it is characterised in that: the length of sleeve pipe is less than the diameter of soil nailing.
4. a kind of prestretching soil nailing with ribs according to claim 1, it is characterised in that: the diameter of sleeve pipe takes ribs bar diameter+2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031927.8U CN205369243U (en) | 2015-12-12 | 2015-12-12 | Take soil nail that prestretches of stiffening rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031927.8U CN205369243U (en) | 2015-12-12 | 2015-12-12 | Take soil nail that prestretches of stiffening rib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205369243U true CN205369243U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521031927.8U Active CN205369243U (en) | 2015-12-12 | 2015-12-12 | Take soil nail that prestretches of stiffening rib |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335098A (en) * | 2020-03-16 | 2020-06-26 | 章丘市金通路桥有限公司 | Cement concrete pavement reformed by embedded reinforced asphalt layer and construction method thereof |
-
2015
- 2015-12-12 CN CN201521031927.8U patent/CN205369243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335098A (en) * | 2020-03-16 | 2020-06-26 | 章丘市金通路桥有限公司 | Cement concrete pavement reformed by embedded reinforced asphalt layer and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |