CN215289929U - Gravity type retaining wall and miniature pile combined supporting structure - Google Patents
Gravity type retaining wall and miniature pile combined supporting structure Download PDFInfo
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- CN215289929U CN215289929U CN202120556796.4U CN202120556796U CN215289929U CN 215289929 U CN215289929 U CN 215289929U CN 202120556796 U CN202120556796 U CN 202120556796U CN 215289929 U CN215289929 U CN 215289929U
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Abstract
The utility model discloses a combined supporting structure of a gravity type retaining wall and a miniature pile, which comprises the gravity type retaining wall, wherein the miniature pile is arranged at the lower part of the foundation of the gravity type retaining wall, the miniature pile adopts a double-row structure, the miniature pile comprises a double-row round hollow prefabricated steel pipe pile body with the diameter not more than 300mm, the surface of the pile body is provided with an anticorrosive coating, and the pile body is internally provided with three reinforcing steel bundles and is filled with concrete; grouting small holes are uniformly formed along the pile body of the miniature pile; forming a cement soil pile formed by mixing high-pressure grouting slurry and a soil body around the micro pile; and a crown beam is arranged at the top of the micro pile and connects the double-row circular hollow prefabricated steel pipe pile bodies. The utility model discloses make originally for the little stake of miniature pile structure become the big stake of miniature stake + soil cement pile compound form through the mode of high-pressure slip casting, the atress performance is better.
Description
Technical Field
The utility model relates to a bank protection engineering technical field specifically is a supporting construction is united with miniature stake to gravity type barricade.
Background
At present, many reservoir bank soil slopes slide due to the long-term erosion and side corrosion action of water flow, which endangers the safety of residents and highways on the slopes, and needs to be revetment remedied. Utility model patent (publication number is CN208701708U) as Guangdong mountain geological engineering reconnaissance discloses an stock lattice beam slope protection structure, its technical scheme main points are including the slope, the surface of landslide can be dismantled horizontal lattice beam that is connected with a plurality of parallel arrangement and a plurality of parallel arrangement's vertical lattice beam, enclose between horizontal lattice beam and the vertical lattice beam and close and form frame structure, horizontal lattice beam and vertical lattice beam are the U template, horizontal lattice beam and vertical lattice beam length direction's opening is towards the surface on slope, the lateral wall of horizontal lattice beam is equipped with first injected hole, the lateral wall of vertical lattice beam is equipped with the second injected hole, the internal surface of horizontal lattice beam and vertical lattice beam is equipped with the release agent layer, be linked together between horizontal lattice beam and the vertical lattice beam.
However, for some soil bank side slopes, the covering layer is deep, the embedded solid section of the anti-slide pile in the limited depth range cannot enter a firmer and stable rock stratum, the stability of the side slope cannot be guaranteed, and the manufacturing cost is high; the retaining wall supporting layer cannot meet the design requirement when being built, the retaining wall foundation is deeper (more than 3 m) to be processed by adopting conventional replacement and filling processing, and is beyond the processing range suggested by the specification and uneconomical; by adopting the scheme of the anchor rod (cable) + the lattice beam, for a deep and thick covering layer, the depth of a potential sliding surface is large, a long anchor rod (cable) needs to penetrate through the sliding surface to a certain depth, the conventional anchor rod (cable) adopts a grouting mode, the side slope is reinforced by cohesive force between grouting bodies and rock-soil bodies, and the anchor rod (cable) is too long in length and has a poor grouting effect in the covering layer.
Therefore, the anchor cable in the conventional technical scheme is not suitable for the slope protection of the bank side slope aiming at the soil bank side slope with deep covering layer.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in: for the bank soil slope with a deep covering layer, the conventional technical scheme (anti-slide pile, retaining wall, anchor rod (cable)) is not suitable for the slope. The reservoir bank side slope is influenced by the water level amplitude for a long time, hydrodynamic pressure can be generated in the slope body, and in addition, the soil body is in a water saturation state, so that instability is easy to occur, the safety of buildings, roads and personnel on the upper portion of the side slope is threatened, and the lives and properties are lost. Therefore, it is very urgent and important to find a reasonable and economic supporting method for such slopes.
The utility model discloses a realize like this:
a gravity type retaining wall and miniature pile combined supporting structure comprises a gravity type retaining wall, a miniature pile is arranged on the lower portion of a foundation of the gravity type retaining wall, the miniature pile is of a double-row structure, the miniature pile comprises a double-row round hollow prefabricated steel pipe pile body with the diameter not larger than 300mm, an anti-corrosion layer is arranged on the surface of the pile body, three reinforcing steel bundles are arranged in the pile body, and concrete is filled in the pile body; grouting small holes are uniformly formed along the pile body of the miniature pile; forming a cement soil pile formed by mixing high-pressure grouting slurry and a soil body around the micro pile; and a crown beam is arranged at the top of the micro pile and connects the double-row circular hollow prefabricated steel pipe pile bodies.
Furthermore, a reserved steel bar is arranged at the top of the crown beam, the length of the reserved steel bar is not less than 1m, the reserved steel bar extends into the wall body at the upper part of the gravity type retaining wall to connect the gravity type retaining wall with the micro pile structure, and a retaining wall and micro pile combined supporting structure is formed.
Furthermore, the vertical distance between the grouting small holes is 30-50 cm.
Further, the foregoing steelThe wall thickness of a tubular pile body is 6-8 mm, and three tubular pile bodies are arranged in the tubular pile body
Tendons and filled with C30 or C25 concrete.
Compared with the prior art, owing to adopted the technical scheme of the utility model, set up double micropile in field level elevation department, the micropile stretches into certain degree of depth below the field level elevation, the slip casting aperture is reserved to the pile body, combine high-pressure slip casting, the slip casting body is reserved the aperture through the pile body under the high pressure effect and is penetrated to the certain scope splitting of the soil body all around the pile, thick liquid and the soil body are mixed together, form a cement earth pillar around the micropile, make the micropile that originally is the micropile structure become the big pile of micropile + cement earth pile compound form through the mode of high-pressure slip casting, the atress performance is better; the top of the micro pile is provided with the crown beam, so that the double rows of piles are connected to cooperatively bear force, and the overall stability is better. The gravity type retaining wall is built below the field level, a crown beam at the top of a miniature pile of the retaining wall is used as a foundation, a reinforcing steel bar with a certain length is reserved on the crown beam, and the reserved reinforcing steel bar is poured together with the upper retaining wall, so that the upper gravity type retaining wall and the lower miniature pile are linked, are stressed in a synergetic manner, and have better overall stability. By the technical scheme, the lower part of the field level can ensure the stability of the lower part of the side slope under the action of the large pile in the composite form of the miniature pile and the cement-soil pile; the retaining wall on the upper portion of the field level elevation is based on the crown beam and has a stable and firm foundation, meanwhile, the dead weight load of the retaining wall is transmitted into the soil layer with the relative stability of the lower portion of the side slope through the miniature piles, the stability of the upper portion of the side slope can be guaranteed, the stability of the side slope of the soil reservoir bank is jointly guaranteed through the gravity retaining wall and miniature pile combined supporting structure, the combined supporting scheme is rapid in construction, and the construction cost is economical.
Drawings
FIG. 1 is the utility model discloses a supporting construction sketch is united to gravity type barricade + miniature stake
Description of reference numerals: 1-a micro pile; 2-grouting small holes; 3-cement soil piles; 4-a crown beam; 5-reserving reinforcing steel bars; 6-gravity retaining wall; 7-house on top of slope.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, the combined supporting structure of gravity retaining wall and micro pile for treating the bank side slope of the soil reservoir of the present invention comprises a micro pile 1, a grouting small hole 2 of the pile body, a soil cement pile 3 formed around the micro pile 1 by high pressure grouting, a crown beam 4 of the pile top, a gravity retaining wall 6 at the top of the crown beam 4, etc.; the miniature pile 1 is a double-row round hollow prefabricated steel pipe pile body with the diameter not larger than 300mm, the wall thickness of the steel pipe pile is 6-8 mm, three phi 25 steel tendons are arranged in the pile body and filled with C30 or C25 concrete, grouting small holes 2 are uniformly formed along the pile body, the vertical distance between the grouting small holes 2 is 30-50 cm, in combination with high-pressure grouting, grouting bodies are split and permeate to soil bodies around the pile body in a certain range through the pile body grouting small holes 2 under the action of high pressure, grout and the soil bodies are mixed together, a cement soil pile 3 is formed around the miniature pile, so that a small pile with the structure of the miniature pile 1 is changed into a large pile with the composite form of the miniature pile 1 and the cement soil pile 2 in a high-pressure grouting mode, and the stress performance is better; the top of the micro pile 1 is provided with the crown beam 4, double rows of piles are connected to cooperatively bear force, and the overall stability is better. The gravity type retaining wall 6 is built below the field level, the gravity type retaining wall 6 is based on a top crown beam 4 of the miniature pile 1, a reserved steel bar 5 with a certain length is reserved on the top crown beam 4, the reserved steel bar 5 is poured together with the upper gravity type retaining wall 6, the upper gravity type retaining wall 6 and the lower miniature pile 1 are connected, the cooperative stress is achieved, and the overall stability is better. By adopting the technical scheme, the lower part of the field level can ensure the stability of the lower part of the side slope under the action of the large pile in the composite form of the miniature pile 1 and the cement-soil pile 2; the field level elevation upper retaining wall 6 is based on the crown beam 4 and has a stable and firm foundation, meanwhile, the dead weight load of the gravity retaining wall 6 is transmitted into the soil layer with the relative stability of the lower part of the side slope through the miniature piles 1, the stability of the upper part of the side slope can be ensured, and the stability of the side slope of the soil reservoir bank is ensured through the combined supporting structure of the gravity retaining wall 6 and the miniature piles 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a supporting construction is united with miniature stake to gravity type barricade, includes gravity type barricade (6), its characterized in that: the gravity type retaining wall is characterized in that a miniature pile (1) is arranged on the lower portion of the foundation of the gravity type retaining wall (6), the miniature pile (1) adopts a double-row structure, the miniature pile (1) comprises a double-row round hollow prefabricated steel pipe pile body with the diameter not larger than 300mm, an anti-corrosion layer is arranged on the surface of the pile body, three steel bundles are arranged in the pile body, and concrete is filled in the pile body; grouting small holes (2) are uniformly formed along the pile body of the miniature pile (1); forming a cement-soil pile (3) formed by mixing high-pressure grouting slurry and soil around the micro pile (1); and a crown beam (4) is arranged at the top of the micro pile (1), and the double-row circular hollow prefabricated steel pipe pile bodies are connected by the crown beam (4).
2. The combined supporting structure of a gravity retaining wall and a micro pile as claimed in claim 1, wherein: set up reserved steel bar (5) crown beam (4) top, reserved steel bar (5) length is not less than 1m, in reserved steel bar (5) stretched into gravity type barricade (6) upper portion wall, couple together gravity type barricade and miniature stake (1) structure, form barricade and miniature stake joint supporting structure.
3. The combined supporting structure of a gravity retaining wall and a micro pile as claimed in claim 1, wherein: the vertical distance between the small grouting holes (2) is 30-50 cm.
4. The combined supporting structure of a gravity retaining wall and a micro pile as claimed in claim 1, wherein: the wall thickness of the steel pipe pile body is 6-8 mm, and three steel pipes are arranged in the pile body
Tendons and filled with C30 or C25 concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120556796.4U CN215289929U (en) | 2021-03-16 | 2021-03-16 | Gravity type retaining wall and miniature pile combined supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120556796.4U CN215289929U (en) | 2021-03-16 | 2021-03-16 | Gravity type retaining wall and miniature pile combined supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215289929U true CN215289929U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120556796.4U Active CN215289929U (en) | 2021-03-16 | 2021-03-16 | Gravity type retaining wall and miniature pile combined supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215289929U (en) |
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2021
- 2021-03-16 CN CN202120556796.4U patent/CN215289929U/en active Active
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