CN110409473B - Deep foundation pit drainage structure and construction method thereof - Google Patents
Deep foundation pit drainage structure and construction method thereof Download PDFInfo
- Publication number
- CN110409473B CN110409473B CN201910629635.0A CN201910629635A CN110409473B CN 110409473 B CN110409473 B CN 110409473B CN 201910629635 A CN201910629635 A CN 201910629635A CN 110409473 B CN110409473 B CN 110409473B
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- foundation pit
- drainage
- baffle
- supporting
- supporting structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the water
Abstract
The invention relates to a deep foundation pit drainage structure and a construction method thereof, wherein a supporting structure is arranged along the inner wall of a foundation pit, and the drainage structure comprises: the drainage ditch is arranged on two opposite sides of the foundation pit and positioned on the inner side of the supporting structure, the bottom surface of the drainage ditch is lower than that of the foundation pit, a baffle is vertically arranged on one side of the drainage ditch, which is far away from the supporting structure, and a U-shaped space is defined by the baffle, the drainage ditch and the corresponding side part of the supporting structure; the drawknot is connected with the supporting plate between the two opposite baffle plates, and a plurality of blocks are arranged at intervals along the baffle plates; and the sealing plate is fixedly arranged at the top of the baffle and blocks the opening of the U-shaped space, and a drain pipe communicated with the drainage ditch penetrates through the sealing plate. The drainage structure effectively solves the problem of complicated reinforcement inside the foundation pit, can be used for directly reinforcing a supporting system of the foundation pit, reduces construction loss, improves working efficiency, can prevent water in the water collecting channel from splashing, and avoids wet and smooth ground of the foundation pit.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a deep foundation pit drainage structure and a construction method thereof.
Background
At present, underground deep foundation pit drainage systems mostly adopt modes such as foundation pit water collection and surface drainage or external dewatering wells, water in an in-process water collecting channel of a water pump for pumping water outwards can splash outwards or overflow when the mode is used for drainage, the bottom surface of a foundation pit is relatively wet and smooth, follow-up construction is not facilitated, in addition, the arrangement of the drainage channel can influence a supporting system in the foundation pit, the foundation pit supporting system needs to be reinforced and supported in addition, and the construction efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a deep foundation pit drainage structure and a construction method thereof, which solve the problem of complicated reinforcement inside a foundation pit.
The technical scheme for realizing the purpose is as follows:
the invention provides a deep foundation pit drainage structure, which is provided with a supporting structure along the inner wall of a foundation pit, and comprises:
the drainage ditch is arranged on two opposite sides of the bottom surface of the foundation pit and positioned on the inner side of the supporting structure, a baffle is vertically arranged on one side of the drainage ditch, which is far away from the supporting structure, the top surface of the baffle is higher than the bottom surface of the foundation pit, and a U-shaped space is defined by the baffle, the drainage ditch and the corresponding side part of the supporting structure;
the drawknot is connected with the supporting plate between the two opposite baffle plates, and a plurality of blocks are arranged at intervals along the baffle plates; and
and the sealing plate is fixedly arranged at the top of the baffle and used for sealing the opening of the U-shaped space, and a drain pipe communicated with the drainage ditch is arranged on the sealing plate in a penetrating way.
The invention adopts a deep foundation pit drainage structure, the drainage ditch is closed by arranging the sealing plate above the drainage ditch, the depth of the drainage ditch is increased by arranging the baffle plate, so that water in the drainage ditch can not splash or overflow outwards, the bottom surface of a foundation pit is prevented from being wet and slippery, in addition, the side part of the drainage ditch is provided with the baffle plate and the supporting plate, so that the inward acting force applied to the supporting structure is transmitted to the baffle plate through the sealing plate and then transmitted to the supporting plate through the baffle plate, and the supporting plate is connected with the baffle plates of the drainage ditches at two opposite sides, so the supporting plate has two acting forces in opposite directions which are mutually counteracted on the supporting plate, thereby achieving the purpose of reinforcing the supporting structure and solving the problem of fussy reinforcement in the foundation pit, the supporting system of the foundation pit can be directly reinforced by utilizing the drainage structure, the construction loss is reduced, the working efficiency is improved, the wet and slippery ground of the foundation pit is avoided.
The deep foundation pit drainage structure is further improved in that a pebble water filtering layer is arranged in the U-shaped space.
The deep foundation pit drainage structure is further improved in that the sealing plate is provided with holes for the drainage pipe to pass through, the drainage pipe is fixedly inserted into the holes, one end, corresponding to the drainage ditch, of the drainage pipe abuts against the bottom surface of the drainage ditch, the side wall, located on one side, close to the drainage ditch, of the sealing plate, of the drainage pipe is provided with a plurality of strip-shaped holes, and the size of each strip-shaped hole is smaller than the particle size of pebbles in the pebble drainage layer.
The deep foundation pit drainage structure is further improved in that through holes are formed in the sealing plate at intervals, and water on the side wall of the foundation pit and the supporting structure enters the drainage ditch through the through holes.
The deep foundation pit drainage structure is further improved in that the top surface of the sealing plate is inclined obliquely downwards towards the direction close to the supporting structure, and the through hole is formed in the position, close to the supporting structure, of the sealing plate.
The invention provides a drainage ditch structure formed by a deep foundation pit drainage structure, wherein a baffle is fixedly arranged at the position, close to a drainage ditch, of the bottom surface of a foundation pit, and the distance from the baffle to the corresponding side part of a supporting structure is greater than the distance from one side of the corresponding baffle of the drainage ditch to the corresponding side part of the supporting structure, so that the bottom surface part of the foundation pit is positioned in a U-shaped space.
The deep foundation pit drainage structure of the invention forms a drainage ditch structure which is further improved in that the top surface of the baffle is flush with the top surface of the supporting plate.
The invention provides a construction method of a deep foundation pit drainage structure, which comprises the following steps:
s11, excavating drainage ditches on two sides of the foundation pit and along the inner side edges of the supporting structure, and installing baffles on one sides of the drainage ditches, which are far away from the supporting structure;
s12, installing a sealing plate on the baffle plate, so that the end part corresponding to a drain pipe penetrating through the sealing plate is arranged in the drain ditch, and the sealing plate blocks the opening of the U-shaped space;
s13, a plurality of supporting plates are arranged between the two opposite side baffles at intervals, so that the supporting plates are connected between the two side baffles in a pulling mode.
The construction method of the deep foundation pit drainage structure is further improved in that before the sealing plate is installed, the construction method further comprises the following steps:
the U-shaped space is filled with a pebble water filtering layer.
Drawings
Fig. 1 is a schematic perspective view of a deep foundation pit drainage structure according to the present invention.
Fig. 2 is a plan view of the deep basal pit drainage structure of the present invention.
Fig. 3 is a flowchart of a construction method of the deep foundation pit drainage structure of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the present invention provides a deep foundation pit drainage structure, wherein a sealing plate is disposed above a drainage ditch to make the drainage ditch closed, and a baffle plate is disposed to increase the depth of the drainage ditch, so that water in the drainage ditch does not splash or overflow, and the bottom surface of a foundation pit is prevented from slipping, and a baffle plate and a support plate are disposed at the side of the drainage ditch, so that an inward acting force applied to a support structure is transmitted to the baffle plate through the sealing plate, and then transmitted to the support plate by the baffle plate, and the support plate is connected to the baffle plates of the drainage ditch at two opposite sides, so that the support plate has two acting forces in opposite directions, which are mutually offset on the support plate, thereby achieving the purpose of reinforcing the support structure, and solving the problem of fussy reinforcement inside the foundation pit, the support system of the foundation pit can be directly reinforced by using the drainage structure, in addition, water in the water collecting channel can be prevented from splashing, and the ground of the foundation pit is prevented from being wet and slippery. The following describes the drainage structure of the deep foundation pit according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic perspective view illustrating a deep foundation pit drainage structure according to the present invention. The deep foundation pit drainage structure of the present invention will be described with reference to fig. 1.
As shown in fig. 1 and 2, the deep foundation pit drainage structure of the present invention has a support structure 11 along an inner wall of the foundation pit, and includes:
the drainage ditch 12 is arranged on two opposite sides of the bottom surface 21 of the foundation pit and positioned on the inner side of the supporting structure 11, a baffle 13 is vertically arranged on one side of the drainage ditch 12, which is far away from the supporting structure 11, the top surface of the baffle 13 is higher than the bottom surface 21 of the foundation pit, and a U-shaped space is formed by the baffle 13, the drainage ditch 12 and the corresponding side part of the supporting structure 11 in a surrounding manner;
the drawknot is connected with the supporting plate 15 between the two opposite baffle plates 13, and a plurality of blocks are arranged at intervals along the baffle plates 13 on the supporting plate 15; and
a sealing plate 14 fixed on the top of the baffle 13 and blocking the opening of the U-shaped space, a drain pipe 142 connected with the drain 12 is arranged on the sealing plate 14.
Further, be provided with the cobble drainage layer in this U-shaped space, this cobble drainage layer can further conduct the interior pressure that supporting construction 11 received to baffle 13 on, also plays the effect of consolidating the U-shaped space simultaneously.
Specifically, set up the hole that supplies drain pipe 142 to pass on this shrouding 14, this drain pipe 142 is fixed to be inserted and locates in the hole, this drain pipe 142 corresponds the one end of escape canal 12 and supports in the bottom surface of escape canal 12, this drain pipe 142 is located and has seted up a plurality of bar holes on the lateral wall that shrouding 14 is close to escape canal 12 one side, the size in this bar hole is less than the particle diameter of cobble in the cobble drainage layer, rivers can flow into drain pipe 142 through the bar hole, nevertheless because the size in bar hole is less than the particle diameter of cobble, therefore the cobble can not enter into in the drain pipe 142.
Preferably, the drain pipe 142 is closed at one end in the drain 12.
In a preferred embodiment of the present invention, as shown in fig. 2, through holes 141 are formed at intervals on the closing plate 14, and water on the side wall of the foundation pit and the supporting structure enters the drainage ditch 12 through the through holes 141.
Specifically, the top surface of the plate 14 is inclined obliquely downward toward the support structure 11, and the through holes 141 are provided at a position of the plate 14 close to the support structure 11, so that water can flow into the through holes 141 along the inclined top surface of the plate 14, thereby preventing water from being accumulated on the plate 14.
Preferably, the top surface of closure plate 14 is formed with a 3% slope.
Further, this baffle 13 fixed mounting is in the position that foundation ditch bottom surface 21 is close to escape canal 12, and the distance of baffle 13 to the lateral part that supporting construction 11 corresponds is greater than the distance that one side that escape canal 12 corresponds baffle 13 to the lateral part that supporting construction 11 corresponds for the bottom surface 21 part of foundation ditch is located the U-shaped space, and the effort that conducts to the escape canal structure can partly be used in the lateral part of foundation ditch bottom surface 21, further shared atress, plays the effect of reinforcing supporting construction 11.
Preferably, the top surface of the baffle 13 is flush with the top surface of the support plate 15, so that the support plate 15 is more uniformly stressed.
Preferably, the supporting structure 11 is an anchor rod supported along the inner wall of the foundation pit, a surrounding plate is arranged at a position of the anchor rod close to the bottom surface 21 of the foundation pit, a flat surrounding surface is formed at the inner side of the supporting structure, the drainage structure is arranged along the surrounding surface, and the drainage ditch 12, the surrounding surface and the baffle 13 form a U-shaped space.
The specific embodiment of the invention is as follows:
a drainage ditch 12 is arranged along the inner side edge of the supporting structure 11 at two opposite sides of the foundation pit, and a vertically arranged baffle 13 is arranged at one side of the bottom surface 21 of the foundation pit, which is far away from the supporting structure 11, of the drainage ditch 12;
paving pebbles in a U-shaped space formed by enclosing the baffle 13, the drainage ditch 12 and the inner side edge of the supporting structure 11 to form a pebble water filtering layer, and reserving the position where the drainage pipe 142 is arranged when paving the pebbles;
installing a closing plate 14 on the top of the baffle 13 and blocking the opening of the U-shaped space, wherein a drain pipe 142 on the closing plate 14 is correspondingly arranged at a reserved position in the pebble, and the end part of the drain pipe 142 in the drain ditch 12 is attached to the bottom surface of the drain ditch 12;
water on the side walls of the pit and the retaining structure 11 flows into the drain 12 through the through holes 141 in the closure plate 14 and the drain pipe 142 is connected to the drain pump so that water in the drain 12 is drained from the pit by the drain pump.
As shown in fig. 3, the construction method of the deep foundation pit drainage structure of the present invention includes the steps of:
step S11, excavating drainage ditches 12 on two sides of the foundation pit and along the inner side edges of the supporting structure 11, and installing baffles 13 on one sides of the drainage ditches 12 far away from the supporting structure 11; then, step S12 is executed
Step S12, installing a sealing plate 14 on the baffle 13, so that the end part corresponding to the drain pipe 142 penetrating through the sealing plate 14 is arranged in the drain 12, and the sealing plate blocks the opening of the U-shaped space; then, step S13 is executed
And S13, installing a plurality of support plates 15 at intervals between the two opposite side baffles 13, so that the support plates 15 are connected between the two side baffles 13 in a pulling mode.
Further, before closing plate 14 is installed, it further includes:
fill the pebble drainage layer in the U-shaped space for the inward stress that supporting construction 11 received can pass through the pebble in the pebble drainage layer and transmit to baffle 13, makes the stress transmission more even.
The specific construction method of the invention is as follows:
a drainage ditch 12 is arranged along the inner side edge of the supporting structure 11 at two opposite sides of the foundation pit, and a vertically arranged baffle 13 is arranged at one side of the bottom surface 21 of the foundation pit, which is far away from the supporting structure 11, of the drainage ditch 12;
paving pebbles in a U-shaped space formed by enclosing the baffle 13, the drainage ditch 12 and the inner side edge of the supporting structure 11 to form a pebble water filtering layer, and reserving the position where the drainage pipe 142 is arranged when paving the pebbles;
installing a closing plate 14 on the top of the baffle 13 and blocking the opening of the U-shaped space, wherein a drain pipe 142 on the closing plate 14 is correspondingly arranged at a reserved position in the pebble, and the end part of the drain pipe 142 in the drain ditch 12 is attached to the bottom surface of the drain ditch 12;
water on the side walls of the pit and the retaining structure 11 flows into the drain 12 through the through holes 141 in the closure plate 14 and the drain pipe 142 is connected to the drain pump so that water in the drain 12 is drained from the pit by the drain pump.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (2)
1. A construction method of a deep foundation pit drainage structure is characterized in that a supporting structure is arranged along the inner wall of a foundation pit, and the drainage structure comprises: the drainage ditch is arranged on two opposite sides of the bottom surface of the foundation pit and positioned on the inner side of the supporting structure, a baffle is vertically arranged on one side of the drainage ditch, which is far away from the supporting structure, the top surface of the baffle is higher than the bottom surface of the foundation pit, and a U-shaped space is defined by the baffle, the drainage ditch and the side part corresponding to the supporting structure; the drawknot is connected with the supporting plate between the two opposite baffle plates, and a plurality of blocks are arranged at intervals along the baffle plates on the supporting plate; and set firmly in baffle top and shutoff are stopped up the open-ended shrouding in U-shaped space, wear to be equipped with on the shrouding with the drain pipe that the escape canal is linked together, its characterized in that includes following step:
s11, excavating drainage ditches on two sides of the foundation pit and along the inner side edges of the supporting structure, and installing the baffle on one side of the drainage ditches, which is far away from the supporting structure;
s12, mounting the sealing plate on the baffle plate, so that the end part corresponding to a drain pipe penetrating through the sealing plate is arranged in the drain ditch, and the sealing plate blocks the opening of the U-shaped space;
s13, a plurality of supporting plates are arranged between the baffles on the two opposite sides at intervals, so that the supporting plates are connected between the baffles on the two sides in a pulling mode.
2. The method for constructing a deep foundation pit drainage structure according to claim 1, further comprising, before installing the sealing plate:
and a pebble water filtering layer is filled in the U-shaped space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629635.0A CN110409473B (en) | 2019-07-12 | 2019-07-12 | Deep foundation pit drainage structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629635.0A CN110409473B (en) | 2019-07-12 | 2019-07-12 | Deep foundation pit drainage structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN110409473A CN110409473A (en) | 2019-11-05 |
| CN110409473B true CN110409473B (en) | 2021-04-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100827009B1 (en) * | 2007-12-03 | 2008-05-06 | (주)창민기술단 | Earth retaining for lay supply pipe and drain pipe |
| CN206667427U (en) * | 2017-02-23 | 2017-11-24 | 成都特瓦新材料有限公司 | A kind of resin mixed mud gutter structure |
| CN207934151U (en) * | 2018-02-11 | 2018-10-02 | 江苏宏远建设集团有限公司 | A kind of workshop is with applying mechanically finished product gutter |
| CN208441213U (en) * | 2018-07-20 | 2019-01-29 | 贵阳学院 | A kind of Rocky Desertification Region Demonstration for Ecological Sanitation device |
| CN208650225U (en) * | 2018-04-10 | 2019-03-26 | 重庆博建建筑规划设计有限公司 | A kind of infiltration type drainage ditch |
| CN209307984U (en) * | 2018-08-08 | 2019-08-27 | 江西省水利科学研究院 | A kind of novel plastic component for the efficient ecological that saves land |
-
2019
- 2019-07-12 CN CN201910629635.0A patent/CN110409473B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100827009B1 (en) * | 2007-12-03 | 2008-05-06 | (주)창민기술단 | Earth retaining for lay supply pipe and drain pipe |
| CN206667427U (en) * | 2017-02-23 | 2017-11-24 | 成都特瓦新材料有限公司 | A kind of resin mixed mud gutter structure |
| CN207934151U (en) * | 2018-02-11 | 2018-10-02 | 江苏宏远建设集团有限公司 | A kind of workshop is with applying mechanically finished product gutter |
| CN208650225U (en) * | 2018-04-10 | 2019-03-26 | 重庆博建建筑规划设计有限公司 | A kind of infiltration type drainage ditch |
| CN208441213U (en) * | 2018-07-20 | 2019-01-29 | 贵阳学院 | A kind of Rocky Desertification Region Demonstration for Ecological Sanitation device |
| CN209307984U (en) * | 2018-08-08 | 2019-08-27 | 江西省水利科学研究院 | A kind of novel plastic component for the efficient ecological that saves land |
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| CN110409473A (en) | 2019-11-05 |
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