CN214695680U - Drainage system between deep foundation pit retaining piles - Google Patents

Drainage system between deep foundation pit retaining piles Download PDF

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Publication number
CN214695680U
CN214695680U CN202120149460.6U CN202120149460U CN214695680U CN 214695680 U CN214695680 U CN 214695680U CN 202120149460 U CN202120149460 U CN 202120149460U CN 214695680 U CN214695680 U CN 214695680U
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China
Prior art keywords
foundation pit
drainage
reinforcing
pile body
water
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CN202120149460.6U
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Inventor
裴文陶
胡晨笛
林宇
何鹏飞
王卫超
杨守兴
徐小娜
张宝峰
张遇
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First Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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First Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
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Abstract

The utility model discloses a drainage system between deep foundation pit retaining piles, relating to the technical field of buildings, and the technical proposal is that the drainage system comprises a net-jet supporting unit, a hidden-buried drainage unit and a centralized-collection open drainage unit; the net-spraying supporting unit comprises a plurality of vertically arranged pile bodies, the pile bodies are vertically arranged around the periphery of the inner side of the foundation pit, one side, facing the inside of the foundation pit, of each pile body is connected with a reinforcing mesh, and concrete is sprayed on the reinforcing mesh to form a concrete spraying layer; the buried water drainage unit comprises water drainage pipes, a plurality of water drainage pipes are longitudinally arranged between every two adjacent pile bodies in an array mode, the water inlet ends of the water drainage pipes face the wall of the foundation pit, and the water outlet ends penetrate through the concrete spray layer and extend to the inner side of the foundation pit. The utility model has the advantages that: according to the scheme, the net-spraying supporting system is combined with the drainage system, the collection and concentrated drainage of stagnant water in the supporting closed system are realized, and the influence of scattered drainage on the supporting surface and the foundation pit is avoided.

Description

Drainage system between deep foundation pit retaining piles
Technical Field
The utility model relates to a building technical field, in particular to drainage system between deep basal pit fender pile.
Background
The method is characterized in that a closed system is formed after inter-pile soil of the underground space deep foundation pit engineering fender pile is subjected to net-spraying support, upper-layer interlayer stagnant water, surface runoff seepage water and the like in the stratum cannot be discharged through a dewatering well, water forms lateral pressure on the net-spraying support of the foundation pit engineering, flows out through the net-spraying support in the modes of seepage, runoff and the like, damages are formed on the net-spraying support, and even the conditions of local pile collapse, slip collapse and the like endanger the safety of the deep foundation pit.
The existing open-cut deep foundation pit engineering fender pile carries out net-spraying support on soil among piles, mostly considers the damage of water bodies which cannot be discharged through a dewatering well to the net-spraying support of the foundation pit engineering, even if the drainage is considered, the drainage pipes are buried in a hidden mode to be scattered and discharged into the foundation pit directly, certain damage is caused to the soil body strength at the bottom of the foundation pit, and the construction progress of the foundation pit construction and a main structure is influenced.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a sluicing drainage system between deep basal pit fender pile aims at solving between deep basal pit engineering fender pile soil and carries out the net and spout and strut and form closed system after, and the clear drainage of collection that can not pass through precipitation well discharged water body such as upper strata stagnant water and surface runoff infiltration layer upon layer spouts the system of strutting with the net between the protection stake.
The technical scheme is that the system comprises a net-spraying supporting unit, a buried drainage unit, a centralized collection and open drainage unit and the like;
the net-spraying supporting unit comprises a plurality of pile bodies which are vertically arranged to serve as retaining piles, the pile bodies are vertically arranged around the periphery of the inner side of the foundation pit, one side, facing the inner side of the foundation pit, of each pile body is connected with a steel bar net, and concrete is sprayed on the steel bar net to form a concrete spraying layer;
the buried water drainage unit comprises water drainage pipes, a plurality of water drainage pipes are longitudinally arranged between every two adjacent pile bodies in an array mode, the water inlet ends of the water drainage pipes face the wall of the foundation pit, and the water outlet ends of the water drainage pipes penetrate through the concrete spray layer and extend to the inner side of the foundation pit;
the open drainage collecting unit comprises a vertical pipe and a horizontal drainage pipe, and the vertical pipe and the horizontal drainage pipe are both arranged on one side of the reinforcing mesh facing the interior of the foundation pit; the vertical pipe is arranged between every two adjacent pile bodies, and the water outlet end of the water drain pipe is communicated with the vertical pipe; the horizontal drain pipe is horizontally arranged at the bottom end of the vertical pipe and communicated with the interior of the vertical pipe.
Preferably, every the pile body is all fixed and is provided with a plurality of pile body plant bars, and the pile body plant bar is followed pile body axial level sets up, and pile body plant bar one end is located inside the pile body, the other end runs through the pile body and extends to pile body one side towards the inside of foundation ditch, the diameter of pile body plant bar is 20mm, and the interval that is located between two adjacent pile body plant bars of same pile body is 1.5 m.
Preferably, the reinforcing mesh is connected with the pile body through reinforcing transverse bars and reinforcing vertical bars, and the reinforcing transverse bars and the reinforcing vertical bars are respectively provided with a plurality of bars in an array manner;
the length of each transverse reinforcing rib corresponds to the perimeter of the foundation pit, the transverse reinforcing ribs are annular, the distance between every two adjacent transverse reinforcing ribs corresponds to the distance between every two pile body embedded ribs in the longitudinal direction, and each transverse reinforcing rib is fixedly connected with the pile body embedded ribs at the same horizontal height;
the length of each reinforcing vertical bar corresponds to the depth of the foundation pit, the distance between every two adjacent reinforcing vertical bars corresponds to the distance between the pile bodies, and each reinforcing vertical bar is fixedly connected with the embedded bar of the pile body of the same pile body;
the reinforcing transverse ribs and the reinforcing vertical ribs are fixedly connected with the reinforcing mesh;
the diameters of the reinforced transverse ribs and the reinforced vertical ribs are both 16 mm.
Preferably, the concrete spraying layer is C20 concrete, and the thickness of the concrete spraying layer is 100mm-150 mm;
the reinforcing mesh is formed by splicing reinforcing steel bars with the diameter of 8mm, and the size of each reinforcing mesh is 200 x 200 mm.
Preferably, one end of the water drain pipe, which is far away from the vertical pipe, is an open end, and flower pipes with water permeable holes are distributed on the body of the water drain pipe.
Preferably, the drain pipe is filled with a permeable filtering material, such as geotextile, dense mesh net and the like.
Preferably, the vertical pipe is fixedly connected with the reinforcing transverse bar; and a water-tight cushion layer is arranged below the transverse pipe.
Preferably, the drain pipe is arranged obliquely, and one end of the drain pipe connected with the vertical pipe is a low-level end.
Preferably, one end of the drain pipe, which is far away from the stand pipe, is provided with a protective cap.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: according to the scheme, the net-spraying supporting system is combined with the drainage system, the collection and concentrated drainage of stagnant water in the supporting closed system are realized, and the influence of scattered drainage on the supporting surface and the foundation pit is avoided.
This scheme is with pit layering excavation degree of depth and installation, does not influence the time limit for a project, because the filter material that permeates water is located the floral tube, can clear up the jam under the condition of not pulling out the floral tube, because vertical drainage riser and horizontal pipe are obviously laid, are favorable to inspection and change, can guarantee the collection of stagnant water between the layer and concentrate the drainage.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
Fig. 4 is an enlarged view of a drain pipe according to an embodiment of the present invention.
Wherein the reference numerals are: 1. a pile body; 11. planting steel bars on the pile body; 2. a reinforcing mesh; 3. reinforcing the transverse ribs; 4. reinforcing the vertical ribs; 5. spraying a concrete layer; 6. a drain pipe; 7. a riser; 8. a horizontal drain pipe; 9. and (5) cushion coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1
Referring to fig. 1 to 4, the utility model provides a drainage system between deep foundation pit retaining piles, which comprises a net-jet supporting unit, a hidden-buried drainage unit, a centralized-collected open drainage unit and the like;
the net-spraying supporting unit comprises a plurality of pile bodies 1 which are vertically arranged to serve as retaining piles, the pile bodies 1 are vertically arranged around the periphery of the inner side of a foundation pit, one side, facing the inner part of the foundation pit, of each pile body 1 is connected with a reinforcing mesh 2, and concrete is sprayed on the reinforcing mesh 2 to form a concrete spraying layer 5;
the buried water drainage unit comprises water drainage pipes 6, a plurality of water drainage pipes 6 are longitudinally arranged between every two adjacent pile bodies 1 in an array mode, the water inlet ends of the water drainage pipes 6 face the wall of the foundation pit, and the water outlet ends penetrate through the concrete spray layer 5 and extend to the inner side of the foundation pit;
the open water collecting and draining unit comprises a vertical pipe 7 and a horizontal draining pipe 8, and the vertical pipe 7 and the horizontal draining pipe 8 are both arranged on one side of the reinforcing mesh 2 facing the interior of the foundation pit; a stand pipe 7 is arranged between every two adjacent pile bodies 1, and the water outlet end of the water drain pipe 6 is communicated with the stand pipe 7; horizontal drain pipe 8 level sets up in the bottom of riser 7, and horizontal drain pipe 8 communicates with riser 7 is inside.
Every stake 1 of institute all fixes and is provided with a plurality of stake plant bars 11, and stake plant bars 11 sets up along 1 axial levels of stake, and 11 one end of stake plant bars are located 1 inside of stake, and the other end runs through 1 one side of extending to 1 orientation foundation ditch of stake, and the diameter of stake plant bars 11 is 20mm, and the interval that is located between 1 adjacent two stake plant bars 11 of same stake is 1.5 m.
The reinforcing mesh 2 is connected with the pile body 1 through reinforcing transverse bars 3 and reinforcing vertical bars 4, and the reinforcing transverse bars 3 and the reinforcing vertical bars 4 are respectively provided with a plurality of bars in an array manner;
the length of each reinforcing transverse bar 3 corresponds to the perimeter of the foundation pit, the reinforcing transverse bars 3 are annular, the distance between every two adjacent reinforcing transverse bars 3 corresponds to the distance between every two longitudinal pile body embedded bars 11, and each reinforcing transverse bar 3 is fixedly connected with the pile body embedded bars 11 at the same horizontal height;
the length of each reinforcing vertical bar 4 corresponds to the depth of the foundation pit, the distance between two adjacent reinforcing vertical bars 4 corresponds to the distance between the pile bodies 1, and each reinforcing vertical bar 4 is fixedly connected with the pile body embedded bar 11 of the same pile body 1;
the reinforcing transverse ribs 3 and the reinforcing vertical ribs 4 are fixedly connected with the reinforcing mesh 2;
the diameters of the reinforcing transverse ribs 3 and the reinforcing vertical ribs 4 are both 16 mm.
The concrete spraying layer 5 is C20 concrete, and the thickness of the concrete spraying layer 5 is 100mm-150 mm;
mesh reinforcement 2 is made up of 8mm diameter steel bars by splicing, and the size of each mesh reinforcement is 200 x 200 mm.
One end of the water drain pipe 6, which is far away from the vertical pipe 7, is an open end, and flower pipes with water permeable holes are distributed on the pipe body of the water drain pipe 6.
The water drain pipe 6 is filled with permeable filter materials such as geotextile, dense mesh net and the like.
The vertical pipe 7 is fixedly connected with the reinforcing transverse bar 3; a water-proof cushion layer 9 is arranged below the transverse pipe 8.
The drain pipe 6 is arranged obliquely, and one end of the drain pipe 6 connected with the vertical pipe 7 is a low-level end.
The end of the downcomer 6 remote from the riser 7 is provided with a protective cap.
During this scheme construction, pile body 1 carries out pile body plant bar 2 earlier, strengthens horizontal muscle 3, strengthens erecting muscle 4 and is connected with pile body plant bar 2 in proper order, and reinforcing bar net 2 is connected with strengthening horizontal muscle 3 and strengthening erecting muscle 4, forms and struts the facade, sprays concrete again, forms concrete spray layer 5 to form reinforcing bar net and spray concrete and strut the system.
The water drain pipe 6 is made of PVC pipe, a perforated pipe is formed by pre-perforating before installation, a permeable filtering material such as geotextile dense mesh net is filled in the water drain pipe, an elbow is installed, the position of the water drain pipe is drilled at the pre-installation position of the water drain pipe 6 of the stand pipe 7 by adopting a perforating method, and the water drain pipe 6 is installed before concrete spraying.
According to the installation of foundation ditch horizontal excavation degree of depth and connect riser 7, be connected with reinforcing horizontal muscle 3 simultaneously, be connected to the foundation ditch bottom and be connected with horizontal drainage pipe 8, realize scattered drainage and collect, reach concentrated drainage effect.
The drainage system of the scheme can collect and intensively discharge the scattered water in the closed supporting system.
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 (5)

1. A drainage system between deep foundation pit retaining piles is characterized by comprising a net-jet supporting unit, a buried drainage unit and a centralized collecting and open drainage unit;
the net-spraying supporting unit comprises a plurality of pile bodies (1) which are vertically arranged, the pile bodies (1) are vertically arranged around the periphery of the inner side of a foundation pit, one side, facing the inner part of the foundation pit, of each pile body (1) is connected with a reinforcing mesh (2), and concrete is sprayed on the reinforcing mesh (2) to form a concrete spraying layer (5);
the buried water drainage unit comprises water drainage pipes (6), a plurality of water drainage pipes (6) are longitudinally arranged between every two adjacent pile bodies (1) in an array mode, the water inlet ends of the water drainage pipes (6) face the wall of the foundation pit, and the water outlet ends penetrate through the concrete spraying layer (5) and extend to the inner side of the foundation pit;
the open drainage collecting unit comprises a vertical pipe (7) and a horizontal drainage pipe (8), and the vertical pipe (7) and the horizontal drainage pipe (8) are arranged on one side, facing the interior of the foundation pit, of the reinforcing mesh (2); the vertical pipe (7) is arranged between every two adjacent pile bodies (1), and the water outlet end of the water drain pipe (6) is communicated with the vertical pipe (7); the horizontal drain pipe (8) is horizontally arranged at the bottom end of the vertical pipe (7), and the horizontal drain pipe (8) is communicated with the interior of the vertical pipe (7).
2. The deep foundation pit enclosure pile internal drainage system according to claim 1, wherein each pile body (1) is fixedly provided with a plurality of pile body embedded bars (11), the pile body embedded bars (11) are horizontally arranged along the axial direction of the pile body (1), one end of each pile body embedded bar (11) is positioned inside the pile body (1), and the other end of each pile body embedded bar penetrates through the pile body (1) and extends to one side of the pile body (1) facing the inside of the foundation pit.
3. A drainage system between deep foundation pit enclosure piles according to claim 2, wherein the reinforcing mesh (2) is connected with the pile body (1) through reinforcing transverse bars (3) and reinforcing vertical bars (4), and the reinforcing transverse bars (3) and the reinforcing vertical bars (4) are respectively provided with a plurality of bars in an array manner;
the length of each transverse reinforcing rib (3) corresponds to the perimeter of a foundation pit, the transverse reinforcing ribs (3) are annular, the distance between every two adjacent transverse reinforcing ribs (3) corresponds to the distance between every two pile body planting ribs (11) in the longitudinal direction, and each transverse reinforcing rib (3) is fixedly connected with the pile body planting ribs (11) at the same horizontal height;
the length of each reinforcing vertical rib (4) corresponds to the depth of a foundation pit, the distance between every two adjacent reinforcing vertical ribs (4) corresponds to the distance between pile bodies (1), and each reinforcing vertical rib (4) is fixedly connected with the pile body embedded rib (11) of the same pile body (1);
the reinforcing transverse ribs (3) and the reinforcing vertical ribs (4) are fixedly connected with the reinforcing mesh (2).
4. The deep foundation pit enclosure pile inter-drainage system according to claim 1, wherein one end of the drain pipe (6) far away from the vertical pipe (7) is an open end, and flower pipes with water permeable holes are distributed on a pipe body of the drain pipe (6).
5. The deep foundation pit enclosure pile internal drainage system according to claim 4, wherein the drain pipe (6) is filled with a water permeable filter material.
CN202120149460.6U 2021-01-19 2021-01-19 Drainage system between deep foundation pit retaining piles Active CN214695680U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120149460.6U CN214695680U (en) 2021-01-19 2021-01-19 Drainage system between deep foundation pit retaining piles

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Application Number Priority Date Filing Date Title
CN202120149460.6U CN214695680U (en) 2021-01-19 2021-01-19 Drainage system between deep foundation pit retaining piles

Publications (1)

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CN214695680U true CN214695680U (en) 2021-11-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112900446A (en) * 2021-01-19 2021-06-04 中建八局第一建设有限公司 Soil supporting and concentrated water drainage system between deep foundation pit retaining piles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112900446A (en) * 2021-01-19 2021-06-04 中建八局第一建设有限公司 Soil supporting and concentrated water drainage system between deep foundation pit retaining piles

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