CN211665767U - Foundation pit supporting structure - Google Patents
Foundation pit supporting structure Download PDFInfo
- Publication number
- CN211665767U CN211665767U CN201922240347.4U CN201922240347U CN211665767U CN 211665767 U CN211665767 U CN 211665767U CN 201922240347 U CN201922240347 U CN 201922240347U CN 211665767 U CN211665767 U CN 211665767U
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- hole
- anchor pipe
- anchor
- rod
- foundation pit
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Abstract
The utility model relates to a foundation pit supporting structure, including the foundation pit soil body, the plug hole, the reinforcing bar net, the concrete surface course, be provided with stock connection structure in the plug hole, stock connection structure includes the anchor pipe, the core bar, gag lever post and locking piece, the core bar stretches into inside the anchor pipe, the gag lever post articulates on the core bar, the through-hole that the gag lever post stretches out the anchor pipe is outside, and can adjust the length that the gag lever post stretches out through the removal of core bar in the anchor pipe, the support ring is fixed a position the core bar in anchor pipe axle center, ensure that the length that each gag lever post stretches out is unanimous, when pouring the plug hole, outwards draw the core rod through the rotation of locking piece, release the anchor pipe with the gag lever post, insert inside the outer foundation pit soil body of plug hole, form the barb all around at the plug.
Description
Technical Field
The utility model relates to a foundation ditch support technical field, concretely relates to foundation ditch supporting construction.
Background
The foundation pit support is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.
In the prior art, the side wall of a foundation pit is protected by using a common mode of soil nailing support, underground continuous wall support or concrete piling support and the like, in the soil nailing support, a pouring hole is drilled on a slope surface formed by excavation in the process of excavating a deep foundation pit, reinforcing steel bars are placed and cement slurry is poured to enable the reinforcing steel bars and the slope surface soil body to form a whole body until the supporting effect is achieved, and then a reinforcing steel bar net is laid on the slope surface and concrete is poured to form a supporting system.
However, holes drilled in the slope soil are circular holes, a cylindrical soil nail structure is formed after cement slurry is poured, the binding capacity with the slope soil is limited, the holes are easy to loosen and pull out in the supporting process, and the supporting capacity of the foundation pit supporting structure on the slope soil is poor.
Disclosure of Invention
For solving the poor problem of excavation supporting construction to domatic soil body supporting capability, the utility model provides an excavation supporting construction, its purpose provides one kind and combines firm supporting construction with the excavation soil body, strengthens the supporting capability.
In order to realize the purpose, the technical scheme of the utility model is that:
a foundation pit supporting structure comprises a foundation pit soil body, a reinforcing mesh, a concrete surface layer and a pouring hole, wherein cement slurry is poured into the pouring hole, the reinforcing mesh is laid on the surfaces of the foundation pit soil body and the pouring hole, concrete is poured into the reinforcing mesh, the concrete surface layer is poured on the reinforcing mesh, and the foundation pit supporting structure also comprises an anchor rod connecting structure;
the inner end of the anchor rod connecting structure is positioned in cement slurry in the pouring hole, the outer end of the anchor rod connecting structure extends out of the pouring hole, and the outer end of the anchor rod connecting structure is connected with the steel bar mesh;
the anchor rod connecting structure comprises an anchor pipe, a core rod and a locking piece, wherein a through hole is formed in the peripheral wall of the anchor pipe, one end of the core rod is coaxially arranged inside the anchor pipe in a penetrating mode, the other end of the core rod extends out of the anchor pipe and penetrates through a reinforcing mesh, external threads are formed in the surface, located outside the anchor pipe, of the core rod, a limiting rod matched with the through hole is arranged on the peripheral wall of the core rod, the limiting rod is a cylindrical rod body, one end of the limiting rod is hinged to the core rod, the other end of the limiting rod penetrates out of the through hole of the anchor pipe, the locking piece is a plate body with an internal thread hole.
Furthermore, the end part of the anchor pipe embedded in cement slurry in the pouring hole is gradually reduced into a cone shape.
Further, the through-hole is the slot, and the width of through-hole is greater than the diameter of gag lever post, is less than 1.5 times of gag lever post diameter, and the length of through-hole is greater than the width.
Furthermore, the through holes are annularly arrayed on the peripheral wall of the anchor pipe, the through holes on the same ring form a group, and a plurality of groups are arranged along the length direction of the anchor pipe.
Further, the number of the through holes of each group of annular arrays is 2-5.
Furthermore, the limiting rod penetrates through the through hole and points to the outer end direction of the anchor rod connecting structure in an inclined mode.
Furthermore, the top end of the limiting rod is conical.
Furthermore, the core bar is a round bar body, support rings are arranged in an array mode along the length direction of the core bar, each support ring is a round ring with a partition plate, the inner edge of each support ring is fixedly connected with the outer wall of the core bar, the outer edge of each support ring is connected with the inner wall of the anchor pipe in a sliding mode, and the support rings and the limiting rods are arranged at intervals.
Furthermore, the support ring is an annular structure formed by a central circular hole, an outer ring and concentric fan-shaped material passing holes which are divided into 3 areas by a partition plate.
Furthermore, the anchor pipe extends into the steel bar net, a circular grouting hole is formed in the peripheral wall of the end part of the anchor pipe, which is positioned in the steel bar net, and the locking piece is pressed on the surface, back to the foundation pit soil body, of the steel bar net.
Through the technical scheme, the beneficial effects of the utility model are that:
the utility model discloses a gag lever post articulates on the core bar, the through-hole that the anchor pipe was worn out to the gag lever post is outside, prick into in the foundation ditch soil body, and can adjust the length that the gag lever post stretches out through the flexible removal of rotatory locking piece control core bar in the anchor pipe, the support ring is with the core bar location in anchor pipe axle center, ensure that the length that each gag lever post stretches out is unanimous, all in the pouring hole, when pouring cement paste, form the barb all around in the pouring hole, strengthen the utility model discloses to the cohesion of foundation ditch soil body, the locking piece presses the reinforcing bar net on foundation ditch soil body surface simultaneously, makes concrete surface course and foundation ditch soil body surface combine firmly, strengthens the supporting capacity of foundation ditch supporting construction to the.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a front view of the anchor rod connecting structure of the present invention;
fig. 3 is an internal structure diagram of the anchor rod connecting structure of the present invention;
fig. 4 is a sectional view (enlarged) taken along line a-a of fig. 3.
The reference numbers in the drawings are as follows: the foundation pit soil body is 1, the pouring hole is 2, the reinforcing mesh is 3, the concrete surface layer is 4, the anchor rod connecting structure is 5, the anchor pipe is 51, the core rod is 52, the limiting rod is 53, the locking piece is 54, the support ring is 55, the through hole is 511, the grouting hole is 512, the partition plate is 551, the outer ring is 552, and the center circular hole is 553.
Detailed Description
The invention will be further explained with reference to the drawings and the detailed description below:
as shown in fig. 1 to 4, a foundation pit supporting structure comprises a foundation pit soil 1, a reinforcing mesh 3, a concrete surface layer 4 and a pouring hole 2, wherein cement slurry is poured into the pouring hole 2, the reinforcing mesh 3 is laid on the surfaces of the foundation pit soil 1 and the pouring hole 2, concrete is poured into the reinforcing mesh 3, the concrete surface layer 4 is poured on the reinforcing mesh 3, and an anchor rod connecting structure 5;
the inner end of the anchor rod connecting structure 5 is positioned in cement slurry in the pouring hole 2, the outer end of the anchor rod connecting structure 5 extends out of the pouring hole 2, and the outer end of the anchor rod connecting structure 5 is connected with the steel bar mesh 3;
the anchor rod connecting structure 5 comprises an anchor pipe 51, a core rod 52 and a locking piece 54, wherein a through hole 511 is formed in the peripheral wall of the anchor pipe 51, one end of the core rod 52 is coaxially arranged inside the anchor pipe 51 in a penetrating mode, the other end of the core rod 52 extends out of the anchor pipe 51 and penetrates through a reinforcing mesh, external threads are formed in the surface, located outside the anchor pipe 51, of the core rod 52, a limiting rod 53 corresponding to the through hole 511 is arranged on the peripheral wall, located inside the anchor pipe 51, of the core rod 52, the limiting rod 53 is a cylindrical rod body, one end of the limiting rod 53 is hinged to the core rod 52, the other end of the limiting rod penetrates out of the through hole 511 of the anchor pipe 51, the locking piece 54 is an internal threaded plate.
The end part of the anchor pipe 51 embedded in the cement slurry in the pouring hole 2 is gradually reduced into a cone shape, so that the anchor pipe 51 can extend into the pouring hole 2.
The through hole 511 is a rectangular hole, the width of the through hole 511 is larger than the diameter of the limiting rod 53 and smaller than 1.5 times of the diameter of the limiting rod 53, and the length of the through hole 511 is larger than the width.
The through holes 511 are annularly arrayed on the peripheral wall of the anchor pipe 51, and the through holes 511 on the same ring are in one group and are in multiple groups along the length direction of the anchor pipe 51.
The number of the through holes 511 of each group of the annular arrays is 2-5.
The limiting rod 53 passes through the through hole 511 and is obliquely directed to the outer end direction of the anchor rod connecting structure 5, and a barb shape is formed when the limiting rod 53 extends out of the anchor pipe 51.
The top end of the limiting rod 53 is conical, so that the limiting rod 53 can conveniently penetrate into the soil layer on the peripheral wall of the pouring hole 2.
The core rod 52 is a round rod body, support rings 55 are arranged in an array mode along the length direction of the core rod 52, the support rings 55 are round rings with partition plates 551, the inner edge of each support ring 55 is fixedly connected with the outer wall of the core rod 52, the outer edge of each support ring 55 is connected with the inner wall of the anchor pipe 51 in a sliding mode, and the support rings 55 and the limiting rods 53 are arranged at intervals.
The support ring 55 is an annular structure consisting of a central circular hole 553, an outer ring 552 and concentric fan-shaped material passing holes which are divided into 3 areas by a partition 551.
The anchor pipes 51 extend into the reinforcing mesh 3, the circumferential wall of the end of the anchor pipe 51 located in the reinforcing mesh 3 is provided with a circular grouting hole 512, and the locking member 54 is pressed against the surface of the reinforcing mesh 3 facing away from the foundation pit soil 1. .
When in use, a pouring hole 2 is drilled on a foundation pit soil body 1, a reinforcing mesh 3 is laid, a core rod 52 of an anchor rod connecting structure 5 extends into an anchor pipe 51 firstly, a limiting rod 53 is contracted to the surface of the anchor pipe 51 not to protrude, then the anchor rod connecting structure 5 is inserted into the pouring hole 2 drilled on the foundation pit soil body 1, the pouring hole 512 stops when being just left on the surface of the foundation pit soil body 1, the anchor pipe 51 is connected with the reinforcing mesh 3 through welding, a locking piece 54 is rotated, the locking piece 54 is pressed on the surface of a reinforcing steel bar back to the foundation pit soil body 1, the locking piece 54 is kept pressed on the surface of the reinforcing mesh 3 in the rotating process, so that the core rod 52 is pulled out of the anchor pipe 51 through the action of threads when the locking piece 54 rotates, at the moment, the core rod 52 drives the limiting rod 53 to extend out of a pouring hole 511 on the anchor pipe 51 along with the movement of the core rod 52 and insert into the soil layer on the peripheral wall of the foundation pit, firmly bonded to the foundation pit soil 1 and also fixed in position against movement due to the mesh reinforcement 3 being pressed against the foundation pit soil 1 by the locking member 54, the mesh reinforcement and the anchor connecting structure being fixedly connected as a unit.
The grouting holes 512 are used for grouting cement slurry into the anchor pipes 51, the cement slurry flows out from the end parts of the anchor pipes 51, which penetrate into the pouring holes 2, of the ends of the anchor pipes 51 and fills the space between the outer wall of the anchor pipe 51 and the pouring holes 2, at the moment, the cement slurry in the pouring holes 2 forms a cylinder with protruding inclined barbs on the peripheral wall, the pennism-like penetrating bodies are firmly combined with the foundation pit soil body 1 and cannot be loosened, after the pouring holes 2 are grouted with the cement slurry, concrete is poured into the steel bar net 3, the outer ends of the anchor rod connecting structures 5 are poured into the steel bar net 3, and the concrete surface layer 4 is poured on the surface.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of the present invention as disclosed without departing from the spirit of the present invention.
Claims (10)
1. A foundation pit supporting structure comprises a foundation pit soil body (1), a reinforcing mesh (3), a concrete surface layer (4) and a pouring hole (2), wherein cement slurry is poured into the pouring hole (2), the reinforcing mesh (3) is laid on the surfaces of the foundation pit soil body (1) and the pouring hole (2), concrete is poured into the reinforcing mesh (3), and the concrete surface layer (4) is poured onto the reinforcing mesh (3), and is characterized by further comprising an anchor rod connecting structure (5);
the inner end of the anchor rod connecting structure (5) is positioned in cement slurry in the pouring hole (2), the outer end of the anchor rod connecting structure extends out of the pouring hole (2), and the outer end of the anchor rod connecting structure (5) is connected with the steel bar mesh (3);
the anchor rod connecting structure (5) comprises an anchor pipe (51), a core rod (52) and a locking piece (54), the peripheral wall of the anchor pipe (51) is provided with a through hole (511), one end of the core rod (52) is coaxially arranged in the anchor pipe (51) in a penetrating way, the other end of the core rod extends out of the anchor pipe (51) and penetrates through the reinforcing mesh (3), the surface of the core rod (52) positioned outside the anchor pipe (51) is provided with external threads, the peripheral wall of the core rod (52) positioned inside the anchor pipe (51) is provided with a limiting rod (53) matched with the through hole (511), the limiting rod (53) is a cylindrical rod body, one end of the limiting rod (53) is hinged on the core rod (52), the other end of the limiting rod penetrates through the through hole (511) of the anchor pipe (51) outwards, the locking piece (54) is a plate body with an internal threaded hole in the center, and the locking piece (54) is connected with the core rod (52) through internal threads and external threads.
2. A foundation pit supporting construction according to claim 1, characterized in that the end of the anchor pipe (51) embedded in the grout in the pouring hole (2) is tapered into a cone shape.
3. A pit supporting construction according to claim 1, characterized in that the through hole (511) is a rectangular hole, the width of the through hole (511) is larger than the diameter of the limiting rod (53) and smaller than 1.5 times the diameter of the limiting rod (53), and the length of the through hole (511) is larger than the width.
4. An excavation supporting construction according to claim 1, wherein the through holes (511) are arranged in an annular array around the circumference of the anchor pipe (51), and the through holes (511) in the same ring are arranged in groups of plural groups along the length of the anchor pipe (51).
5. An excavation supporting construction according to claim 4, wherein the number of through holes (511) per set of annular arrays is 2-5.
6. A foundation pit supporting construction according to claim 1, characterized in that the stop rod (53) is directed obliquely through the through hole (511) in the direction of the outer end of the anchor connecting structure (5).
7. A pit supporting construction according to claim 6, characterised in that the top of the retaining bar (53) is conical.
8. A pit supporting structure as claimed in claim 1, wherein the core rod (52) is a round rod, the support rings (55) are arranged in an array along the length direction of the core rod (52), the support rings (55) are rings with partition plates (551), the inner edges of the support rings (55) are fixedly connected with the outer wall of the core rod (52), the outer edges of the support rings (55) are slidably connected with the inner wall of the anchor pipe (51), and the support rings (55) are arranged at intervals with the limiting rods (53).
9. An excavation supporting construction according to claim 8, wherein the support ring (55) comprises a ring structure of a central circular aperture (553) and an outer ring (552) and concentric fan-shaped material passing apertures of equal area divided by a partition (551).
10. A foundation pit supporting construction according to claim 1, wherein the anchor pipe (51) extends into the reinforcing mat (3), the end of the anchor pipe (51) within the reinforcing mat (3) being provided with a circular grout hole (512) in the peripheral wall of the end, the locking member (54) pressing against the surface of the reinforcing mat (3) facing away from the foundation pit soil (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922240347.4U CN211665767U (en) | 2019-12-14 | 2019-12-14 | Foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922240347.4U CN211665767U (en) | 2019-12-14 | 2019-12-14 | Foundation pit supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211665767U true CN211665767U (en) | 2020-10-13 |
Family
ID=72735040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922240347.4U Expired - Fee Related CN211665767U (en) | 2019-12-14 | 2019-12-14 | Foundation pit supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211665767U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814034A (en) * | 2020-12-24 | 2021-05-18 | 徐敏 | Municipal works are with theftproof well lid |
| CN113481987A (en) * | 2021-08-01 | 2021-10-08 | 尹杰 | Inverted sheet type anti-floating anchor rod |
| CN114737575A (en) * | 2022-05-23 | 2022-07-12 | 福州闽龙铁路工程有限公司 | Foundation pit extension support body and foundation pit extension support method |
| CN114892655A (en) * | 2022-04-29 | 2022-08-12 | 中交一公局集团有限公司 | Anchor pipe assembly |
-
2019
- 2019-12-14 CN CN201922240347.4U patent/CN211665767U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814034A (en) * | 2020-12-24 | 2021-05-18 | 徐敏 | Municipal works are with theftproof well lid |
| CN113481987A (en) * | 2021-08-01 | 2021-10-08 | 尹杰 | Inverted sheet type anti-floating anchor rod |
| CN114892655A (en) * | 2022-04-29 | 2022-08-12 | 中交一公局集团有限公司 | Anchor pipe assembly |
| CN114892655B (en) * | 2022-04-29 | 2024-03-08 | 中交一公局集团有限公司 | Anchor tube assembly |
| CN114737575A (en) * | 2022-05-23 | 2022-07-12 | 福州闽龙铁路工程有限公司 | Foundation pit extension support body and foundation pit extension support method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201013 Termination date: 20211214 |