CN211472506U - Do benefit to injection concrete structure of drainage - Google Patents
Do benefit to injection concrete structure of drainage Download PDFInfo
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- CN211472506U CN211472506U CN201920955209.1U CN201920955209U CN211472506U CN 211472506 U CN211472506 U CN 211472506U CN 201920955209 U CN201920955209 U CN 201920955209U CN 211472506 U CN211472506 U CN 211472506U
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Abstract
The utility model discloses a do benefit to injection concrete structure of drainage, it includes: the drainage component is partially positioned in the bedrock or the soil body and is used for draining seepage water in the bedrock or the soil body; the reinforcing mesh is connected with the drainage assembly and covers the surface of the bedrock or the soil body; and a concrete layer formed by spraying concrete onto the reinforcing mesh sheet. The drainage pipe is arranged to discharge crack water generated by foundation pit bedrock or soil body, and then the hanging net spraying protection is implemented, so that the quality of sprayed concrete is improved, and the cost is reduced. Simultaneously, the drain pipe still can play about the anchor the same with the stock for the structure is whole firm degree height, water-proof effects are good.
Description
Technical Field
The utility model relates to a geotechnical engineering field especially relates to a foundation ditch drainage type sprays concrete structure.
Background
In foundation pits, tunnels and other underground engineering, after foundation pit earthwork excavation, bed rock fracture water develops on the surface of the foundation pit or the face surface of the tunnel, so that the bed rock fracture water exists between the fender post piles, currently, a grouting reinforcement mode is adopted to prevent water seepage, but the method is high in cost and long in construction period. As the improvement, the accessible sprayed concrete prevents the infiltration with the mode that forms the concrete layer, but sprayed concrete under the large tracts of land infiltration condition can make the concrete can't reach the initial set state under the effect of rivers, leads to sprayed concrete quality not good, further leads to the exposed time overlength of country rock, causes the safety risk from this. Meanwhile, due to the water seepage, the concrete can run off and fall off when the concrete is sprayed, so that the waste of concrete materials is caused, and the construction cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned defect of prior art, a do benefit to injection concrete structure of drainage is provided, and it comes the crack water discharge that foundation ditch bedrock or the soil body occured through setting up the drain pipe, implements the hanging net again and spouts and protect to improve the quality of injection concrete, reduce cost. Simultaneously, the drain pipe still can play about the anchor the same with the stock for the structure is whole firm degree height, water-proof effects are good.
The utility model provides a technical scheme that its technical problem adopted is:
there is provided a sprayed concrete structure facilitating drainage, comprising: the drainage component is partially positioned in the bedrock or the soil body and is used for draining seepage water in the bedrock or the soil body; the reinforcing mesh is connected with the drainage assembly and covers the surface of the bedrock or the soil body; and a concrete layer formed by spraying concrete onto the reinforcing mesh sheet.
Preferably, the drain assembly includes: one end of each drain pipe is inserted into the bedrock or the soil body, a plurality of first drain holes are formed in the part of each drain pipe inserted into the bedrock or the soil body, and the other end of each drain pipe extends out of the concrete layer; and/or at least one transverse arc-shaped pipe which is transversely accommodated in a first accommodating groove formed in the bedrock or the soil body, the bending surface of each transverse arc-shaped pipe faces the bedrock or the soil body, and each transverse arc-shaped pipe is provided with a second drain hole; and/or at least one longitudinal arc-shaped pipe is longitudinally accommodated in a second accommodating groove formed in the bedrock or the soil body, the curved surface of each longitudinal arc-shaped pipe faces the bedrock or the soil body, and each longitudinal arc-shaped pipe is provided with a third water drainage hole.
Preferably, the transverse arc-shaped pipe is perpendicular to the longitudinal arc-shaped pipe, and the distance between the transverse arc-shaped pipe and the longitudinal arc-shaped pipe is 1-2 m.
Preferably, the drain pipes are arranged in a quincunx manner, the distance is 1-3m, the length of one end, inserted into the bedrock or the soil body, of each drain pipe is 0.5-2m, and the length of one end, extending out of the concrete layer, of each drain pipe is 2-10 cm.
Preferably, the transverse arc-shaped pipe and/or the longitudinal arc-shaped pipe are semi-circular pipes, and the diameter of the transverse arc-shaped pipe and/or the longitudinal arc-shaped pipe is 2-5 cm.
Preferably, the reinforcing mesh is detachably connected with the drain pipe.
Preferably, the diameter of the steel bars of the steel bar mesh is 6mm, and the aperture of the mesh is 150mm x 150 mm.
Preferably, the concrete layer is made of cement, broken stone, river sand, an accelerator and water, and the weight ratio of cement: accelerator: river sand: crushing stone: water (400-: (150-300).
Preferably, the shotcrete structure further comprises: the geotextile is fixed on the surface of the bedrock or the soil body.
The utility model discloses technical scheme's beneficial effect lies in:
the utility model discloses in form drainage network through setting up horizontal arc pipe and vertical arc pipe, increase drainage function, simultaneously, the drain pipe that inserts foundation ditch bed rock or the soil body when carrying drainage function still can play the anchor effect to foundation ditch bed rock or the soil body as the stock for the whole firm degree of structure is high. On the basis, the hanging net spraying protection is implemented, so that the water seepage can be greatly reduced, the quality of sprayed concrete is improved, and the cost is reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a longitudinal sectional view of a sprayed concrete structure according to a first embodiment of the present invention;
fig. 2 is a front view of a drain assembly according to a first embodiment of the present invention;
fig. 3 is a cross-sectional view of a transverse arc tube and a longitudinal arc tube in a first embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The first embodiment is as follows:
fig. 1 shows that the sprayed concrete structure facilitating drainage of the present invention includes: the drainage assembly is partially positioned in foundation pit bedrock or soil body S and is used for draining seepage water in the foundation pit bedrock or soil body S; the reinforcing steel bar net piece 1 is connected with the drainage assembly, and the reinforcing steel bar net piece 1 covers the surface of foundation pit bedrock or soil body S; and a concrete layer 2 formed by spraying concrete onto the reinforcing mesh sheet 1.
Specifically, the drainage assembly includes: at least one (preferably a plurality of) drain pipes 3, wherein one end of each drain pipe 2 is inserted into the foundation pit bedrock or soil body S, a plurality of first drain holes 31 are formed in the part of each drain pipe 3 inserted into the foundation pit bedrock or soil body S, and the other end of each drain pipe 3 extends out of the concrete layer 2; and/or, at least one (preferably several) transverse arc pipes 4 (as shown in fig. 2) transversely accommodated in the first accommodating groove formed in the bedrock or soil body S, the curved surface of each transverse arc pipe 4 faces and clings to the bedrock or soil body S, and each transverse arc pipe 4 is provided with a second drainage hole 41 (as shown in fig. 3); and/or at least one longitudinal arc-shaped pipe 5 longitudinally accommodated in a second accommodating groove formed in the bedrock or the soil body S, wherein the curved surface of each longitudinal arc-shaped pipe 5 faces and is tightly attached to the bedrock or the soil body S, and each longitudinal arc-shaped pipe 5 is provided with a third drainage hole 51 (as shown in fig. 3).
In this embodiment, the "transverse direction" refers to an extending direction of the tunnel foundation pit, and the "longitudinal direction" refers to a height direction of the foundation pit bedrock or the soil body S. Preferably, the drainage pipes 3 are arranged in a quincunx manner, the distance between the drainage pipes is 1-3m (preferably 2m), the length of one end of each drainage pipe 3 inserted into the bedrock or soil body S is 0.5-2m (preferably 1.5m), the length of one end of each drainage pipe 3 extending out of the concrete layer 2 is 2-10cm (preferably 5cm), meanwhile, the transverse arc pipe 41 is perpendicular to the longitudinal arc pipe 51, the distance between the transverse arc pipe 41 and the longitudinal arc pipe 51 is 1-2m (preferably 1.5m), and the aperture of the first drainage hole 31 and/or the second drainage hole 41 and/or the third drainage hole 51 is 0.5-5 cm. Furthermore, the transverse arc-shaped pipe 41 and/or the longitudinal arc-shaped pipe 51 are semicircular pipes made of PVC materials, the diameter of each semicircular pipe is 2-5cm (preferably 3cm), and therefore, a complete circular pipe can be directly cut from the semicircular pipes to form the semicircular arc-shaped pipes, and the semicircular arc-shaped pipes are easy to process and manufacture.
Further, in this embodiment, reinforcing bar net piece 1 with detachable connection such as drain pipe 3 accessible iron wire ligature, perhaps through mode fixed connection such as welding. From this, horizontal arc pipe 4 and vertical arc pipe 5 can form the drainage network, increase the drainage function, and reinforcing bar net piece 1 links as an organic whole with drain pipe 3 simultaneously and can increase structural strength, and simultaneously, the drain pipe 3 that inserts foundation ditch bed rock or the soil body when making drainage function, still can play the anchor effect as the stock to foundation ditch bed rock or soil body, further improves the holistic firm degree of structure.
In addition, in order to further improve the water seepage prevention function, the sprayed concrete structure further comprises: the geotextile 6 is fixed on the surface of the bedrock or the soil body S and is positioned between the steel bar net piece 1 and the bedrock or the soil body S; preferably, the geotextile 6 is fixed on the surface of the foundation pit bedrock or the soil body S through fixing parts such as iron and the like and is arranged between the two fender piles 100, and the geotextile 6 can be filament geotextile, and has the width of 2-3 m (preferably 2.5m) and the length of 2-3 m (preferably 2.5 m); meanwhile, if the water seepage area is too large, the geotextile 6 is provided with a plurality of geotextiles, two adjacent geotextiles 6 are in lap joint, the lap joint length is 10-15cm (preferably 12cm), and fasteners such as iron and the like are adopted at every 40-60cm (preferably 50cm) in the vertical direction on the lap joint part for fixing, so that the geotextile 6 can prevent the fracture water accumulated in the transverse arc-shaped pipe 41 and/or the longitudinal arc-shaped pipe 51 from further seeping out, further, a predetermined number of geotextiles 6 can be flexibly selected according to the water seepage area for lap joint use, the carrying and the laying are convenient, meanwhile, the geotextile 6 can be prevented from being in loose lap joint due to too large total area and too heavy weight through the reinforcement of the fasteners, the water seepage prevention effect is ensured, and the third fasteners are convenient to install and disassemble and convenient to construct.
Example two:
the embodiment also provides a construction method of the shotcrete structure as described in the first embodiment, which includes the following steps:
s1, leveling the surface of the foundation pit bedrock or soil body, and arranging a first accommodating groove and/or a second accommodating groove on the bedrock or soil body;
s2, arranging a transverse arc-shaped pipe in each first accommodating groove, and enabling the bending surface of each transverse arc-shaped pipe to face and cling to bedrock or soil; and/or a longitudinal arc-shaped pipe is arranged in each second accommodating groove, and the bending surface of each longitudinal arc-shaped pipe faces and is tightly attached to the bedrock or the soil body;
s3, drilling a hole in the bedrock or the soil body, and inserting one end of the drainage pipe into the drilled hole in the bedrock or the soil body;
s4, covering the steel bar net piece on the surface of the bedrock or the soil body, and connecting the steel bar net piece with the drainage pipe;
and S5, spraying concrete on the reinforcing mesh sheet to form a concrete layer, and plastering and leveling.
It should be noted that the technical features of the first and second embodiments can be combined arbitrarily, and the technical solutions formed by combining the technical features all belong to the protection scope of the present invention.
To sum up, the utility model discloses in form drainage network through setting up horizontal arc pipe and vertical arc pipe, increase drainage function, simultaneously, the drain pipe that inserts foundation ditch bed rock or the soil body still can play the anchor effect to foundation ditch bed rock or the soil body as the stock when carrying drainage function for the whole firm degree of structure is high. On the basis, the hanging net spraying protection is implemented, so that the water seepage can be greatly reduced, the concrete can be ensured to reach an initial setting state as soon as possible when the concrete is sprayed, the quality of the sprayed concrete can be improved, the concrete is prevented from losing along with the water seepage, the material waste is reduced, and the construction cost is reduced.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A sprayed concrete structure facilitating drainage, comprising: the drainage component is partially positioned in the bedrock or the soil body and is used for draining seepage water in the bedrock or the soil body; the reinforcing mesh is connected with the drainage assembly and covers the surface of the bedrock or the soil body; and a concrete layer formed by spraying concrete onto the reinforcing mesh sheet.
2. The sprayed concrete structure of claim 1, wherein the drainage assembly comprises: one end of each drain pipe is inserted into the bedrock or the soil body, a plurality of first drain holes are formed in the part of each drain pipe inserted into the bedrock or the soil body, and the other end of each drain pipe extends out of the concrete layer; and/or at least one transverse arc-shaped pipe which is transversely accommodated in a first accommodating groove formed in the bedrock or the soil body, the bending surface of each transverse arc-shaped pipe faces the bedrock or the soil body, and each transverse arc-shaped pipe is provided with a second drain hole; and/or at least one longitudinal arc-shaped pipe is longitudinally accommodated in a second accommodating groove formed in the bedrock or the soil body, the curved surface of each longitudinal arc-shaped pipe faces the bedrock or the soil body, and each longitudinal arc-shaped pipe is provided with a third water drainage hole.
3. The sprayed concrete structure of claim 2, wherein the transverse arc tube and the longitudinal arc tube are perpendicular to each other, and the distance between the transverse arc tube and the longitudinal arc tube is 1-2 m.
4. The sprayed concrete structure of claim 2, wherein the drainage pipes are arranged in a quincunx pattern at intervals of 1 to 3m, and each drainage pipe has a length of 0.5 to 2m at an end inserted into the bedrock or soil and a length of 2 to 10cm at an end protruded from the concrete layer.
5. The sprayed concrete structure of claim 2, wherein the transverse arc-shaped tube and/or the longitudinal arc-shaped tube is a semicircular tube having a diameter of 2-5 cm.
6. The sprayed concrete structure of claim 2, wherein the rebar mesh is removably connected to the drain.
7. The sprayed concrete structure of claim 1, wherein the mesh of steel reinforcement has a steel reinforcement diameter of 6mm and a mesh aperture of 150mm by 150 mm.
8. The sprayed concrete structure of any one of claims 1 to 7, further comprising: the geotextile is fixed on the surface of the bedrock or the soil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920955209.1U CN211472506U (en) | 2019-06-24 | 2019-06-24 | Do benefit to injection concrete structure of drainage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920955209.1U CN211472506U (en) | 2019-06-24 | 2019-06-24 | Do benefit to injection concrete structure of drainage |
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| CN211472506U true CN211472506U (en) | 2020-09-11 |
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| CN201920955209.1U Active CN211472506U (en) | 2019-06-24 | 2019-06-24 | Do benefit to injection concrete structure of drainage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359464A (en) * | 2019-06-24 | 2019-10-22 | 山东省地质矿产勘查开发局八0一水文地质工程地质大队(山东省地矿工程勘察院) | Sprayed concrete structure beneficial to drainage and construction method thereof |
| CN114657967A (en) * | 2022-03-10 | 2022-06-24 | 浙江新盛建设集团有限公司 | Temporary concrete road reinforcing device for construction of soft soil layer |
-
2019
- 2019-06-24 CN CN201920955209.1U patent/CN211472506U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359464A (en) * | 2019-06-24 | 2019-10-22 | 山东省地质矿产勘查开发局八0一水文地质工程地质大队(山东省地矿工程勘察院) | Sprayed concrete structure beneficial to drainage and construction method thereof |
| CN114657967A (en) * | 2022-03-10 | 2022-06-24 | 浙江新盛建设集团有限公司 | Temporary concrete road reinforcing device for construction of soft soil layer |
| CN114657967B (en) * | 2022-03-10 | 2024-04-16 | 浙江新盛建设集团有限公司 | Temporary concrete road reinforcing device for soft soil layer construction |
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