CN211395697U - Expansive soil foundation pit soil nailing wall supporting structure - Google Patents
Expansive soil foundation pit soil nailing wall supporting structure Download PDFInfo
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- CN211395697U CN211395697U CN201922043823.3U CN201922043823U CN211395697U CN 211395697 U CN211395697 U CN 211395697U CN 201922043823 U CN201922043823 U CN 201922043823U CN 211395697 U CN211395697 U CN 211395697U
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Abstract
The utility model relates to an inflation soil foundation pit soil nail wall supporting construction, it is including wearing to locate the anchor eye in the side slope, wear to be equipped with soil nail in the anchor eye, the anchor eye is provided with the first sleeve that is used for the soil nail location in the outer one end of side slope, soil nail passes first sleeve and rather than looks butt, its axis circumference equidistance interval of first sleeve perpendicular to is provided with two piece at least branches, the inside cavity of branch is worn to establish and sliding connection is used for the slide bar with anchor eye inner wall butt, branch sets up the fluting rather than inside intercommunication along its length direction, soil nail still overlaps outward and is equipped with the second sleeve coaxial with first sleeve, the second sleeve passes the fluting respectively through the down tube and links to each other with the one end that every slide bar is close to branch, the both ends of down tube rotate with slide bar and second sleeve respectively and be connected. The utility model discloses have and be convenient for wear to locate the effect at anchor eye center with soil nail.
Description
Technical Field
The utility model relates to a excavation supporting technical field especially relates to an inflation soil foundation ditch soil nail wall supporting construction.
Background
At present, in an expansive soil distribution area, when the excavation depth of a foundation pit exceeds the buried depth of expansive soil, the characteristics of rainwater expansion and dehydration shrinkage of the expansive soil can form the most direct threat to the stability of a foundation pit slope, so that the foundation pit slope is generally reinforced by adopting a soil nailing wall. The soil nailing wall is an in-situ soil body reinforcement technology, and is a slope reinforcement type support construction method which is characterized in that a foundation pit slope is reinforced through soil nails made of reinforcing steel bars, a reinforcing mesh is laid on the surface of the slope, and then a concrete surface layer is sprayed on the surface of the slope to combine with an earthwork slope.
In the prior art, chinese patent with publication number CN206736927U discloses an expansive soil foundation pit soil nail wall supporting structure, which uses the self-stability of the soil near the bottom of the foundation pit, and extends the steel pipe pile below the second step surface to improve the stability of the steel pipe pile, and at the same time, adopts the mode of combining the anchor rod and the soil nail on the slope wall to enhance the supporting strength, and the reinforced soil nail on the slope wall is arranged in an inclined manner, so that the tail end of the reinforced soil nail extends into the soil on the slope wall, thereby the tail end of the reinforced soil nail and the tail end of the anchor rod are arranged in a mutually staggered manner, and an interactive woven structure is formed in the stereoscopic aspect to improve the supporting stability.
The above prior art solutions have the following drawbacks: bury underground in the in-process of side slope at the soil nail, need drill the anchor eye on the side slope earlier, wear to locate the anchor eye with the soil nail again in, then the slip casting, but rock easily when the anchor eye is worn to locate by the soil nail, lead to the soil nail can't be in the center of anchor eye for during the slip casting, the concrete can't fully combine with the inflation soil, makes the tensile strength of soil nail weaker.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inflation soil foundation ditch soil nail wall supporting construction has and is convenient for wear to locate the advantage at anchor eye center with the soil nail.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides an inflation soil foundation ditch soil nail wall supporting construction, is including wearing to locate the anchor eye in the side slope, wear to be equipped with soil nail in the anchor eye, the anchor eye in the outer one end of side slope is provided with and is used for the first sleeve of soil nail location, soil nail passes first sleeve and rather than looks butt, its axis circumference equidistance interval of first sleeve perpendicular to is provided with two piece at least branches, the inside cavity of branch is worn to establish and sliding connection be used for with the slide bar of anchor eye inner wall butt, branch sets up the fluting rather than inside intercommunication along its length direction, soil nail outer still the cover be equipped with the coaxial second sleeve of first sleeve, the second sleeve passes the fluting respectively through the down tube and links to each other with the one end that every slide bar is close to branch, the both ends of down tube respectively with the slide bar with the second sleeve rotates to be connected.
After the anchor hole is drilled on the side slope, when the soil nail needs to be arranged in the anchor hole in a penetrating way, the first sleeve is firstly placed at the inlet of the anchor hole, the first sleeve is fixed by hand, then the second sleeve is moved towards the first sleeve, the second sleeve drives the corresponding slide bar to slide towards the inner wall of the anchor hole along the length direction of the support bar through the diagonal bar and finally abuts against the inner wall of the anchor hole, because the distance of each slide bar sliding out of the corresponding support bar is the same, the first sleeve and the anchor hole are both circular, when each slide bar abuts against the inner wall of the anchor hole, the first sleeve can be positioned at the center of the anchor hole, then the soil nail penetrates through the first sleeve and penetrates towards the anchor hole, so that the soil nail can be positioned at the center of the anchor hole when completely penetrating into the anchor hole, the concrete can be fully combined with expansive soil during grouting, and the first sleeve can be pulled out for recycling after grouting, has the advantage of being convenient for wear to locate the anchor eye center with soil nail.
The utility model discloses further set up to, wear to establish on the slide bar and threaded connection have be used for with the fastening screw of the inside looks butt of branch.
Implement above-mentioned technical scheme, pass through the down tube at the second sleeve and drive the slide bar butt to the inside back of anchor eye, need fix the position of slide bar in branch, twist fastening screw for fastening screw and the inside looks butt of branch, thereby fix the relative position of slide bar in branch, pass the in-process in the first sleeve at soil nail, make slide bar and branch can not take place relative slip.
The utility model discloses further set up to, fastening screw wears out grooved one end is provided with the butterfly and twists the head.
Implement above-mentioned technical scheme, twist the head through being provided with the butterfly, be convenient for twist constructor fastening screw.
The utility model discloses further set up to, the slide bar is kept away from the one end of branch is provided with most advanced.
Implement above-mentioned technical scheme, through being provided with most advanced, be convenient for slide bar and anchor eye inner wall butt back-fixing on the anchor eye.
The utility model discloses further set up as, there is the confession through connecting rod coaxial coupling in the first sleeve the butt ring that the soil nail passed.
Implement above-mentioned technical scheme, through being provided with the butt ring, the soil nail pass the butt ring and with butt ring looks butt, can reduce the clearance between soil nail and the first sleeve for the in-process that the soil nail worn to establish always to the anchor eye, the soil nail can be in the center of anchor eye as far as possible.
The utility model discloses further set up to, the connecting rod is kept away from the one end of butt joint ring with the connection can be dismantled to first sleeve.
Implement above-mentioned technical scheme, because according to different geological conditions, need bore not unidimensional anchor eye, also need wear to establish not unidimensional soil nail, so need correspond the butt ring of size according to not unidimensional soil nail adaptation, through connecting rod and the first telescopic connection of dismantling, the butt ring of being convenient for is changed according to not unidimensional soil nail.
The utility model discloses further set up to, the butt intra-annular rotate be connected with be used for with the ball of soil nail butt.
Implement above-mentioned technical scheme, through being provided with the ball, pass the in-process that the butt ring entered into the anchor eye at soil nail, can turn into the rolling friction of soil nail and ball with soil nail and the slip friction of butt ring, reduce frictional force.
The utility model discloses further set up to, be provided with the handle on the second sleeve.
Implement above-mentioned technical scheme, through being provided with the handle, be convenient for after the slip casting, pull out first sleeve from the anchor eye through the handle to use next time.
To sum up, the utility model discloses following beneficial effect has:
firstly, the first sleeve is placed at the inlet of the anchor hole, the first sleeve is fixed by hand, then the second sleeve is moved towards the first sleeve, the second sleeve drives the corresponding slide bar to slide towards the inner wall of the anchor hole along the length direction of the supporting rod through the diagonal rod, and finally the slide bar is abutted with the inner wall of the anchor hole, because the distance of each sliding rod sliding out of the corresponding support rod is the same, because the first sleeve and the anchor hole are both round, therefore, when each slide bar is abutted against the inner wall of the anchor hole, the first sleeve can be positioned at the center of the anchor hole, and then the soil nail penetrates through the first sleeve and penetrates towards the anchor hole, so that the soil nail can be positioned at the center of the anchor hole when completely penetrating into the anchor hole, during grouting, the concrete can be fully combined with expansive soil, and after grouting, the first sleeve can be pulled out for recycling, so that the anchor hole has the advantage of facilitating the penetration of the soil nail in the center of the anchor hole;
two, because according to different geological conditions, need bore not unidimensional anchor eye, also need wear to establish not unidimensional soil nail, so need correspond the butt ring of size according to not unidimensional soil nail adaptation, through connecting rod and first telescopic dismantlement being connected, the butt ring of being convenient for is changed according to not unidimensional soil nail.
Drawings
Fig. 1 is a sectional view of an embodiment of the supporting structure of the soil nailing wall of the expansive soil foundation pit of the present invention;
fig. 2 is the utility model discloses the embodiment soil nail passes second sleeve and telescopic structural schematic of second in proper order, mainly embodies soil nail and first sleeve and second sleeve relation of being connected.
Reference numerals: 1. side slope; 2. an anchor eye; 3. soil nailing; 4. a first sleeve; 5. a strut; 6. a slide bar; 7. grooving; 8. a second sleeve; 9. a diagonal bar; 10. fastening a screw rod; 11. a butterfly-shaped screw head; 12. a tip; 13. a connecting rod; 14. a butting ring; 15. a ball bearing; 16. and (4) a handle.
Detailed Description
The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings.
Examples
As shown in figure 1, an inflation soil foundation ditch soil nail wall supporting construction, including wearing to locate a plurality of anchor eyes 2 in the side slope 1, all wear to be equipped with soil nail 3 in every anchor eye 2, soil nail 3 is the reinforcing bar, and soil nail 3 has different models, needs to select according to 2 sizes of different anchor eyes.
With reference to fig. 1 and 2, a first sleeve 4 for positioning the soil nails 3 is disposed at one end of the anchor hole 2 outside the slope 1, and a butting ring 14 for the soil nails 3 to pass through is coaxially and detachably connected in the first sleeve 4 through a connecting rod 13. In the embodiment, the aperture of the abutting ring 14 is matched with the size of the soil nail 3, and one end of the connecting rod 13 far away from the abutting ring 14 is detachably connected with the inside of the first sleeve 4 through a screw. The ball 15 which is used for being abutted against the soil nail 3 is rotationally connected in the abutting ring 14, and when the soil nail 3 slides towards the anchor hole 2 after penetrating through the abutting ring 14, the friction force between the abutting ring 14 and the soil nail 3 can be reduced.
With reference to fig. 1 and 2, the first sleeve 4 has two support rods 5 welded symmetrically and perpendicular to the axial direction thereof, the support rods 5 are hollow and penetrated and slidably connected with slide bars 6 for abutting against the inner wall of the anchor hole 2, and the ends of the slide bars 6 far away from the support rods 5 are welded with pointed ends 12 convenient to insert into the inner wall of the anchor hole 2. The supporting rod 5 is provided with a groove 7 communicated with the inside of the supporting rod 5 along the length direction of the supporting rod, a second sleeve 8 coaxial with the first sleeve 4 is further sleeved outside the soil nail 3, the second sleeve 8 penetrates through the groove 7 through an inclined rod 9 to be connected with one end, close to the supporting rod 5, of each sliding rod 6 respectively, and two ends of the inclined rod 9 are hinged to the sliding rods 6 and the second sleeve 8 respectively. In this embodiment, an abutting ring 14 for the soil nail 3 to pass through is also arranged in the second sleeve 8, so as to increase the support for the soil nail 3, so that the soil nail 3 can be located at the central position as much as possible during the process of passing through the anchor hole 2.
As shown in fig. 2, a fastening screw 10 for abutting against the inside of the support rod 5 is inserted through and connected to the slide rod 6 by a thread, and a butterfly-shaped screw head 11 is disposed at one end of the fastening screw 10, which penetrates through the slot 7, so that a constructor can conveniently screw the fastening screw 10. The second sleeve 8 is welded with a handle 16, so that the second sleeve 8 can be pulled to pull the first sleeve 4 out of the anchor hole 2 for the next use in the grouting process of the anchor hole 2.
The specific working process is as follows: after the anchor hole 2 is drilled on the slope 1, when the soil nail 3 needs to be arranged in the anchor hole 2 in a penetrating manner, the abutting ring 14 with the corresponding size is selected to be installed in the first sleeve 4 through the connecting rod 13 according to the size of the soil nail 3. Then the first sleeve 4 is placed at the inlet of the anchor hole 2, the first sleeve 4 is fixed by hand, then the second sleeve 8 is moved towards the first sleeve 4, the second sleeve 8 drives the corresponding sliding rod 6 to slide towards the inner wall of the anchor hole 2 along the length direction of the supporting rod 5 through the inclined rod 9, so that the tip 12 on the sliding rod 6 is inserted into the inner wall of the anchor hole 2, and the first sleeve 4 can be centered in the anchor hole 2. Then, the fastening screw 10 is screwed by the butterfly-shaped screw head 11, so that the fastening screw 10 is abutted against the inside of the strut 5, thereby fixing the relative position of the slide rod 6 in the strut 5.
The soil nail 3 is then inserted through the second sleeve 8 and the abutment ring 14 in the first sleeve 4 in order to enter the anchor eye 2 smoothly and may be located in the center of the anchor eye 2. Then, concrete is injected into the anchor hole 2 through a grouting machine. When the anchor eye 2 is filled with concrete, the second sleeve 8 is pulled by the pull handle 16, so that the first sleeve 4 is pulled out of the anchor eye 2, and the anchor eye is convenient to use next time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an inflation soil foundation ditch soil nail wall supporting construction, includes wears to locate anchor eye (2) in side slope (1), wear to be equipped with soil nail (3) in anchor eye (2), its characterized in that, anchor eye (2) in the outer one end of side slope (1) is provided with and is used for first sleeve (4) of soil nail (3) location, soil nail (3) pass first sleeve (4) and rather than butt, first sleeve (4) are perpendicular to its axis circumference equidistance interval and are provided with two piece at least branches (5), the inside cavity of branch (5) wears to establish and sliding connection has a slide bar (6) that is used for with anchor eye (2) inner wall butt, fluting (7) rather than inside intercommunication is seted up along its length direction in branch (5), soil nail (3) still overlap outward be equipped with second sleeve (8) coaxial with first sleeve (4), the second sleeve (8) penetrates through the groove (7) through the diagonal rod (9) to be connected with one end, close to the support rod (5), of each sliding rod (6) respectively, and two ends of the diagonal rod (9) are connected with the sliding rods (6) and the second sleeve (8) in a rotating mode respectively.
2. The supporting structure of the soil nailing wall of the expansive soil foundation pit according to claim 1, wherein a fastening screw rod (10) for abutting against the inside of the supporting rod (5) is penetrated and connected with the sliding rod (6) in a threaded manner.
3. The expansive soil foundation pit soil nailing wall supporting structure according to claim 2, wherein one end of the fastening screw rod (10) penetrating out of the slot (7) is provided with a butterfly-shaped screwing head (11).
4. The supporting structure of the soil nailing wall of the expansive soil foundation pit according to claim 1, wherein one end of the sliding rod (6) far away from the supporting rod (5) is provided with a pointed end (12).
5. The supporting structure of the soil nailing wall of the expansive soil foundation pit according to claim 1, wherein an abutting ring (14) for the soil nail (3) to pass through is coaxially connected in the first sleeve (4) through a connecting rod (13).
6. An expansive soil foundation pit soil nailing wall supporting structure according to claim 5, wherein one end of the connecting rod (13) far away from the abutting ring (14) is detachably connected with the first sleeve (4).
7. An expansive soil foundation pit soil nailing wall supporting structure according to claim 5, wherein a ball (15) for abutting with the soil nail (3) is rotatably connected to the abutting ring (14).
8. The supporting structure of the soil nailing wall of the expansive soil foundation pit according to claim 1, wherein the second sleeve (8) is provided with a handle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922043823.3U CN211395697U (en) | 2019-11-23 | 2019-11-23 | Expansive soil foundation pit soil nailing wall supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922043823.3U CN211395697U (en) | 2019-11-23 | 2019-11-23 | Expansive soil foundation pit soil nailing wall supporting structure |
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| Publication Number | Publication Date |
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| CN211395697U true CN211395697U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922043823.3U Active CN211395697U (en) | 2019-11-23 | 2019-11-23 | Expansive soil foundation pit soil nailing wall supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263182A (en) * | 2020-09-16 | 2022-04-01 | 深圳市能亿建设工程有限公司 | Foundation pit supporting system |
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2019
- 2019-11-23 CN CN201922043823.3U patent/CN211395697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263182A (en) * | 2020-09-16 | 2022-04-01 | 深圳市能亿建设工程有限公司 | Foundation pit supporting system |
| CN114263182B (en) * | 2020-09-16 | 2023-06-30 | 深圳市能亿建设工程有限公司 | Foundation pit supporting system |
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