CN210658409U - A block structure for subway station precipitation well head - Google Patents
A block structure for subway station precipitation well head Download PDFInfo
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- CN210658409U CN210658409U CN201921480908.1U CN201921480908U CN210658409U CN 210658409 U CN210658409 U CN 210658409U CN 201921480908 U CN201921480908 U CN 201921480908U CN 210658409 U CN210658409 U CN 210658409U
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Abstract
The utility model provides a plugging structure for a subway station dewatering wellhead, which comprises a bottom plate positioned above a dewatering well, a steel pipe, a steel bar, a steel plate, a steel ring piece and an axillary angle; the steel pipe extends out of the dewatering well and enters the bottom plate; the reinforcing steel bars comprise upper reinforcing steel bars and lower reinforcing steel bars which are respectively arranged in the bottom plate; the steel plate is covered on the upper part of the steel pipe and positioned on the upper part of the upper layer of steel bars, and the steel plate is fixedly connected with the upper layer of steel bars; the steel ring sheet is sleeved on the steel pipe and sealed with the steel pipe; the axillary angle surrounds and clings to the steel pipe and is arranged below the bottom plate; the plugging structure of the utility model also comprises a waterproof layer, plugging parts can be prefabricated, produced and assembled on site, the stacking is convenient, the construction condition is improved, and the construction period is saved; the structure rigidity is big, has improved subway station precipitation well head and has sealed bearing capacity and the seepage prevention ability of back structure.
Description
Technical Field
The utility model belongs to the technical field of precipitation well, concretely relates to a block structure for subway station precipitation well head.
Background
With the development of underground space in China, before the foundation pit of the building engineering is excavated, a certain number of dredging wells and relief wells are arranged in the pit in advance to reduce the underground water level and the confined water head at the bottom of the pit, prevent the bottom of the foundation pit from surging and ensure the stability of the bottom of the pit during excavation construction. In the subway station work progress, the shutoff of subway station precipitation well head is generally pour the back and is gone on at the bottom plate, and the bottom plate can leave over the hole later stage of diameter 600mm left and right sides and pour.
At present, the plugging of dewatering wells mostly adopts a plugging method of firstly filling melon seed slices in well pipes, then grouting and then pouring concrete. On one hand, the bottom plate has larger thickness and is directly close to water, the bearing water pressure is large, no stress reinforcing steel bar is arranged at the mouth of the subway station dewatering well, the bonding surface of new and old concrete is weaker, and the integrity is poor; on the other hand, the bottom plate is soaked in water for a long time, and the water leakage phenomenon is easy to occur due to poor waterproof effect and easy generation of cracks caused by stress concentration. Therefore it is necessary for utility model a simple reliable structure to reduce the harm that subway station precipitation well head shutoff quality is not good to be brought, improves atress, the waterproof performance of structure, guarantees the normal use of building.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a block structure for subway station precipitation well head carries out effectual shutoff to the subway station precipitation well head that subway station and basement bottom plate left over.
In order to achieve the above object, the present invention provides the following technical solutions:
a plugging structure for a subway station precipitation wellhead comprises a bottom plate positioned above a precipitation well, a steel pipe, a steel bar, a steel plate, a steel ring piece and an axillary corner;
the steel pipe is vertically arranged in the dewatering well, extends out of the dewatering well and enters the bottom plate;
the steel bars comprise upper-layer steel bars arranged on the upper layer in the bottom plate and lower-layer steel bars arranged on the lower layer in the bottom plate, and the upper-layer steel bars and the lower-layer steel bars are arranged on the outer sides of the steel pipes;
the steel plate cover is connected to the upper end of the steel pipe and positioned at the upper part of the upper layer of steel bars, and the steel plate is fixedly connected with the upper layer of steel bars;
the steel ring sheet is sleeved on the steel pipe and sealed with the steel pipe, and the steel ring sheet is arranged inside the bottom plate;
the axillary angle surrounds and clings to the steel pipe and is arranged below the bottom plate;
concrete is poured into the bottom plate, the steel pipe and the axillary corners.
In the plugging structure for the subway station precipitation wellhead, preferably, the number of the steel ring sheets is multiple, and the multiple steel ring sheets are uniformly distributed on the steel pipe from top to bottom; the steel ring sheet at the lowest layer is tightly attached to the lower surface of the lower layer of steel bar; the interval between any two steel ring sheets is 0.5 m.
The blocking structure for the subway station dewatering wellhead preferably further comprises a waterproof layer, the waterproof layer comprises a horizontal waterproof layer and a vertical waterproof layer, the horizontal waterproof layer is laid on the lowest layer along the horizontal direction between the steel ring piece and the axillary corner, the vertical waterproof layer is laid between the steel pipe and the axillary corner along the vertical direction, and the horizontal waterproof layer and the vertical waterproof layer are sealed.
In the plugging structure for the subway station precipitation wellhead, preferably, the horizontal waterproof layer comprises a waterproof coiled material and a water stop flange, and the waterproof coiled material is tightly attached between the water stop flange and the axillary corner; the length of the horizontal waterproof layer exceeds the outer edge of the steel ring piece, and the length of the vertical waterproof layer is the same as that of the lower edge of the axillary corner.
In the plugging structure for the subway station precipitation wellhead, preferably, the steel ring plate is provided with a plurality of through holes; the steel ring piece surface is equipped with first rib, first rib protrusion in steel ring piece surface.
In the plugging structure for the subway station dewatering wellhead, preferably, the surface of the steel plate is provided with a second rib which protrudes out of the surface of the steel plate; the second ribs protrude from the surface of the steel plate by 5 mm.
In the plugging structure for the subway station precipitation wellhead, preferably, the axillary corners are in the shape of an inverted frustum.
In the plugging structure for the subway station precipitation wellhead, preferably, a rubber sealing gasket is arranged at the joint of the steel pipe and the steel ring sheet.
The blocking structure for the subway station precipitation wellhead is preferable, the upper layer steel bars and the lower layer steel bars comprise a plurality of steel bars, the steel bars are arranged in a criss-cross mode to form a cross area, and the area of the cross area is not smaller than that of the steel plate.
In the plugging structure for the subway station precipitation wellhead, preferably, the strength of the concrete inside the axillary angle is higher than that of the concrete inside the bottom plate.
Compared with the closest prior art, the utility model provides a technical scheme has following excellent effect:
the utility model discloses set up vertically and horizontally staggered's reinforcing bar at the bottom plate upper and lower floor and improve the bearing capacity of bottom plate, then set up the steel sheet in bottom plate upper reinforcing bar department, the steel sheet below sets up multilayer steel ring piece to be provided with the armpit angle at the steel pipe with the contact position of bottom plate, strengthened the stability and the bearing capacity of structure, waterproof layer and sealed design of filling up have improved block structure's prevention of seepage ability simultaneously.
The utility model discloses a plugging structure for subway station precipitation well head, its shutoff part can on-spot prefabrication production equipment, and transportation, stack conveniently, improved the construction condition, saved construction cycle; the structure has high rigidity and good overall performance, improves the bearing capacity and the seepage-proofing capacity of the structure after the subway station dewatering wellhead is plugged, and reduces the crack development and the damage of a new junction surface and an old junction surface.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a sectional view of the plugging structure of the present invention;
fig. 2 is a schematic plan view of the plugging structure of the present invention;
FIG. 3 is a schematic structural view of the steel ring plate of FIG. 1;
fig. 4 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1. a base plate; 2. upper layer steel bars; 3. lower layer steel bar; 4. a steel plate; 5. a rubber gasket; 6. a steel ring sheet; 7. a waterproof layer; 71. a horizontal waterproof layer; 72. a vertical waterproof layer; 8. axillary angle; 9. a steel pipe; 10. concrete-filled steel tubes; 11. dewatering wells; 12. and a water stopping flange.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 4, according to the utility model discloses an embodiment provides a block structure for subway station precipitation well head, and this block structure can carry out effectual shutoff to the subway station precipitation well head that subway station and basement bottom plate left over.
The utility model discloses a block structure is including being located bottom plate 1 of precipitation well 11 tops, and bottom plate 1 highly can be for 600 supplyes 1000mm, and bottom plate 1 below is provided with the concrete cushion, and preferably, the concrete cushion can be for the thick C20 concrete of 200mm, and block structure still includes steel pipe 9, reinforcing bar, steel sheet 4, steel ring piece 6 and axillary angle 8.
The steel pipe 9 is vertically arranged in the dewatering well 11, the diameter of the steel pipe is smaller than that of the dewatering well 11, the steel pipe 9 extends out of the dewatering well 11 and enters the bottom plate 1, namely the lower end of the steel pipe 9 is positioned in the dewatering well 11, and the upper end of the steel pipe 9 is positioned in the bottom plate 1 above the dewatering well 11; in the embodiment of the present invention, the steel pipe 9 is made of Q235-B steel, the outer diameter of the steel pipe 9 is 300mm smaller than the diameter of the precipitation well 11, the wall thickness of the steel pipe is 8mm, and the length dimension of the steel pipe 9 below the bottom plate 1 is 2 times of the diameter of the steel pipe.
The reinforcing bar is including locating the upper reinforcing bar 2 on 1 inside upper strata of bottom plate and locating the lower floor's of 1 inside lower floor's of bottom plate reinforcing bar 3, and upper reinforcing bar 2 and lower floor's reinforcing bar 3 are the atress reinforcing bar of 1 structure of bottom plate to form reinforced concrete structure behind 1 concreting of bottom plate, improve bottom plate 1's bearing capacity. Upper reinforcing bar 2 and lower floor's reinforcing bar 3 are many reinforcing bars, are criss-cross between the upper reinforcing bar 2 and arrange between the reinforcing bar 3 of lower floor to cut in steel pipe 9 department, the reinforcing bar forms alternately arranging along steel pipe 9 periphery promptly. Criss-cross arranges and forms the cross region between upper reinforcing bar 2 and between the reinforcing bar next time, and the area of cross region is not less than the area of steel sheet 4.
The steel plate 4 is covered and connected with the upper end of the steel pipe 9, namely the steel plate covers the pipe orifice of the steel pipe 9 and is connected with the steel pipe 9, the steel plate also covers the center of the upper part of the upper layer of steel bars 2, and the steel plate 4 is fixedly connected with the upper layer of steel bars 2; the utility model discloses an in the embodiment, steel sheet 4 closely pastes and arranges above upper reinforcing bar 2 and the steel pipe 9, and steel sheet 4 and upper reinforcing bar 2 welt are full-length welded. The upper ends of the steel plate 4 and the steel pipe 9 are fixedly connected in a welting full-weld mode, and the distance between the uppermost end of the steel plate 4 and the top of the bottom plate 1 is 50 mm.
In the specific embodiment of the utility model, the steel plate 4 is made of Q235-B steel, the steel plate 4 is circular, the diameter of the steel plate 4 is 3 times of the diameter of the precipitation well 11, the thickness of the steel plate 4 is 20mm, the surface of the steel plate 4 is provided with second ribs, and the second ribs protrude out of the surface of the steel plate 4; preferably, the second ribs protrude 5mm from the surface of the steel plate 4, and the second ribs arranged on the steel plate 4 are used for being conveniently and better combined with concrete in the bottom plate 1, so that the curing effect is enhanced.
The steel ring piece 6 is sleeved on the steel pipe 9 and is in sealing connection with the steel pipe 9, the steel ring piece 6 and the steel pipe 9 are welted and fully welded, and the steel ring piece 6 is arranged inside the bottom plate 1; in the specific embodiment of the utility model, the steel ring piece 6 is made of Q235-B steel, the steel ring piece 6 is circular, the inner diameter of the steel ring piece 6 is the same as the outer diameter of the steel pipe 9, and the outer diameter of the steel ring piece 6 is equal to the diameter of the steel plate 4; the thickness of the steel ring pieces 6 is 10mm, a plurality of steel ring pieces 6 are arranged, the steel ring pieces 6 are uniformly distributed on the steel pipe 9 up and down along the height direction of the steel pipe 9 (not all the steel ring pieces are drawn in the figure), and the interval between any two steel ring pieces 6 is 0.5 m; preferably, the lowermost steel ring piece 6 is tightly attached to the lower surface of the lower steel bar 3, and the overlapping section of the lowermost steel ring piece 6 and the lower steel bar is fixedly connected by full welding.
In the specific embodiment of the utility model, the steel ring 6 is provided with a plurality of through holes which are evenly distributed along the circumferential direction, and the through holes are used for facilitating the concrete pouring inside the bottom plate 1 below the steel plate 4 to be compact, preventing bubbles from occurring and improving the bearing capacity of the bottom plate 1; 4 through holes are formed in each steel ring sheet 6 at an interval of 90 degrees in the circumferential direction, and the hole diameter is 100 mm. The surface of the steel ring sheet 6 is provided with a first rib which protrudes out of the surface of the steel ring sheet 6; preferably, the first rib protrudes 3mm from the surface of the steel ring sheet 6, and the first rib arranged on the steel ring sheet 6 has the same function as the second rib arranged on the steel plate 4, so as to be better combined with the concrete in the bottom plate 1 and enhance the curing effect. The steel ring sheets 6 effectively disperse the load applied to the precipitation well 11 from the steel plate 4, and the stress is effectively diffused by dispersing the loads to the bottom plate 1 and the axillary angles 8 through the multiple layers of steel ring sheets 6, so that the stability of the structure is ensured; in addition, the rubber sealing gasket 5 arranged between the steel ring sheet 6 and the steel pipe 9 also enhances the sealing performance of the plugging structure and prevents water seepage.
The axillary angle 8 surrounds and clings to the steel pipe 9 and is arranged below the bottom plate 1; the axillary angle 8 is the inverted circular truncated cone shape, and the hypotenuse clip angle between the upper bottom surface and the lower bottom surface edge of the axillary angle 8 is 45 ° (namely the oblique line inclination angle of the longitudinal section of the axillary angle 8 is 45 °), the lower bottom surface of the axillary angle 8 is abutted against the well mouth of the precipitation well 11, and the thickness of the axillary angle 8 is greater than that of the concrete cushion layer. The diameter of the upper bottom surface of the axillary corner 8 is 3 times of that of the steel pipe 9, and the diameter of the lower bottom surface of the axillary corner is the same as that of the steel pipe 9. Concrete is poured inside the axillary angle 8, namely the axillary angle 8 is of a concrete structure, the strength of the concrete is C35 grade, the waterproof grade is P10, the concrete is micro-expansive concrete so as to further seal the steel pipe 9 and the bottom plate 1 and prevent water seepage, and the arrangement of the axillary angle 8 enhances the shearing resistance and the anti-cutting resistance of the structure.
The utility model discloses a block structure still includes waterproof layer 7, and waterproof layer 7 includes horizontal waterproof layer 71 and vertical waterproof layer 72, and horizontal waterproof layer 71 level is to laying between lower floor's steel ring piece 6 and armpit angle 8, and vertical waterproof layer 72 is vertical to laying between steel pipe 9 and armpit angle 8 and hugging closely steel pipe 9 setting, and the seam crossing between horizontal waterproof layer 7 and the vertical waterproof layer 7 is sealed. The horizontal length of the waterproof layer 7 exceeds the outer edge of the steel ring piece 6 by 0.5m, and the vertical length is the same as the lower edge of the axillary angle 8. The axillary corner 8 is arranged below the waterproof layer 7. The horizontal waterproof layer 71 comprises a waterproof coiled material and a water stop flange 12, the waterproof coiled material is tightly attached between the water stop flange and an axillary corner, and the water stop flange 12 is tightly attached below the lowest steel ring sheet 6; the vertical waterproof layer 72 is a waterproof roll material, and seals the steel pipe 9 and the axillary corners 8 to prevent water seepage.
The utility model discloses an in the embodiment, steel pipe 9 is equipped with rubber packing 5 with 6 seam crossing unders of steel ring piece, and rubber packing 5's setting has further improved block structure's prevention of seepage water effect.
In the specific embodiment of the utility model, concrete is poured inside the bottom plate 1, the steel pipe 9 and the axillary angle 8; the strength of the concrete poured at the axillary angle 8 is one level higher than that of the concrete poured at the bottom plate 1, the strength of the concrete poured at the axillary angle 8 is C40-grade micro-expansive concrete, the concrete of the bottom plate 1 and the concrete-filled steel tube 10 are both common concrete, the strength of the concrete-filled steel tube 10 is C30-grade, and the strength of the concrete poured inside the bottom plate 1 is C35-grade. The concrete that axillary angle 8 department compared in bottom plate 1 and adopted high one-level intensity is mainly axillary angle 8 for main atress component, consider stress concentration, the concrete strength need improve the one-level, in order to improve block structure's planarization, bottom plate 1 is still including the cement mortar layer that is located upper reinforcing bar 2 top, the cement mortar layer thickness is 50mm, it is 50mm apart from bottom plate 1 top (being cement mortar layer top) distance promptly from the top of steel sheet 4, after having pour the concrete promptly, trowel cement mortar on it in order to form the cement mortar layer.
Penetrating holes are uniformly formed in the pipe wall of the part, located inside the dewatering well 11, of the steel pipe 9, when the steel pipe concrete 10 is poured into the steel pipe 9, the steel pipe concrete 10 overflows through the penetrating holes, the steel pipe 9 and the wellhead of the dewatering well 11 are poured and solidified, and clay balls are filled in the area, located inside the dewatering well 11, of the lower portion of the steel pipe 9.
The utility model provides a block structure installation step for 11 mouths of subway station precipitation well does:
firstly, a plugging structure is prefabricated according to the diameter of the dewatering well 11, the outer diameter of a steel pipe 9 is 30cm smaller than the diameter of the dewatering well 11, the wall thickness is 8mm, and the length of the steel pipe 9 is 2 times of the diameter of the steel pipe 9 from an upper layer of reinforcing steel bars 2 to the position exceeding the bottom of a bottom plate 1. And after the centers of the steel ring sheets 6 and the steel pipe 9 are aligned, the welts are fully welded, and a ring is arranged every 0.5m until one steel ring sheet 6 is arranged under the lower layer of the steel bar 3. And placing the manufactured structure in the dewatering well 11, keeping the center of the steel pipe 9 aligned with the center of the dewatering well 11 and sinking to the designed depth.
Then horizontally laying the waterproof layer 7 between the bottommost layer steel ring sheet 6 and the axillary angle 8; vertically laid between the steel pipe 9 and the axillary angle 8, and horizontally and vertically sealed at the seam. Then 8 concrete pouring of axillary angle is carried out, 1 formwork supporting of the bottom plate is carried out after the strength of 8 concrete of the axillary angle reaches the design requirement, the lower layer of steel bar 3 is placed inside the bottom plate 1, the overlapped section of the bottommost layer of steel ring piece 6 and the lower layer of steel bar 3 is fully welded, and the rubber sealing gasket 5 is arranged at the joint of the steel pipe 9 and the steel ring piece 6.
After the concrete is poured into the bottom plate 1 to the position of the upper end port of the steel pipe 9, the underground structure meets the anti-floating requirement, after the experience is collected, the opening of the dewatering well 11 of the subway station of the bottom plate 1 is plugged, and the concrete is poured into the dewatering well 11 to the height of the bottom layer of the steel pipe 9. Then, an upper layer of steel bars 2 are laid on the outer side of the upper end of the steel pipe 9, then the steel plate 4 is placed above the upper layer of steel bars 2 and the steel pipe 9, and the steel plate 4 is respectively welded with the upper layer of steel bars 2 and the steel pipe 9 in a full-welding mode. And finally, finishing the sealing process of the bottom plate 1 at the upper layer of the steel bars 2 and the steel plate 4, and trowelling the sealing position by cement mortar to finish the well sealing work.
The utility model discloses a plugging structure for subway station precipitation well head, through the welding of steel sheet, steel ring piece and upper and lower floor's reinforcing bar, strong with the bottom plate structure wholeness, the rigidity obviously strengthens, has improved whole bending resistance; and the lower parts of two sides between the bottom plate and the steel pipe are provided with axillary angles, so that the shearing resistance and the cutting resistance of the structure are enhanced. After the dewatering well is plugged, the load is transferred to the middle and lower steel ring sheets by the upper steel plate and then is diffused to the bottom plate and the axillary angle, the stress is effectively diffused, and the stability of the structure is ensured. Whole structure is from supreme setting up multichannel waterproof construction down, and wherein first waterproof construction is the waterproof capability of waterproof layer strongest, the effectual impervious ability that has improved after the hole shutoff.
To sum up, the plugging component of the plugging structure for the subway station dewatering wellhead can be prefabricated, produced and assembled on site, is convenient to transport and stack, improves the construction condition and saves the construction period; the structure has high rigidity and good integral performance, improves the bearing capacity and the seepage-proofing capacity of the structure after the subway station dewatering wellhead is plugged, and reduces the crack development and the damage of a new junction surface and an old junction surface.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A plugging structure for a subway station precipitation wellhead comprises a bottom plate positioned above a precipitation well, and is characterized by further comprising a steel pipe, a steel bar, a steel plate, a steel ring piece and an axillary corner;
the steel pipe is vertically arranged in the dewatering well, extends out of the dewatering well and enters the bottom plate;
the steel bars comprise upper-layer steel bars arranged on the upper layer in the bottom plate and lower-layer steel bars arranged on the lower layer in the bottom plate, and the upper-layer steel bars and the lower-layer steel bars are arranged on the outer sides of the steel pipes;
the steel plate cover is connected to the upper end of the steel pipe and positioned at the upper part of the upper layer of steel bars, and the steel plate is fixedly connected with the upper layer of steel bars;
the steel ring sheet is sleeved on the steel pipe and sealed with the steel pipe, and the steel ring sheet is arranged inside the bottom plate;
the axillary angle surrounds and clings to the steel pipe and is arranged below the bottom plate;
concrete is poured into the bottom plate, the steel pipe and the axillary corners.
2. The plugging structure for the precipitation wellhead of the subway station as claimed in claim 1, wherein there are a plurality of said steel ring pieces, and said plurality of said steel ring pieces are uniformly distributed on said steel pipe from top to bottom; the steel ring sheet at the lowest layer is tightly attached to the lower surface of the lower layer of steel bar; the interval between any two steel ring sheets is 0.5 m.
3. The plugging structure for a subway station dewatering wellhead as claimed in claim 2, wherein the plugging structure further comprises a waterproof layer, the waterproof layer comprises a horizontal waterproof layer and a vertical waterproof layer, the horizontal waterproof layer is laid between the steel ring sheet at the lowermost layer and the axillary corner along the horizontal direction, the vertical waterproof layer is laid between the steel pipe and the axillary corner along the vertical direction, and the horizontal waterproof layer and the vertical waterproof layer are sealed.
4. The plugging structure for the dewatering wellhead of the subway station as claimed in claim 3, wherein said horizontal waterproof layer comprises a waterproof roll and a water stop flange, said waterproof roll is tightly attached between said water stop flange and said axillary corner; the length of the horizontal waterproof layer exceeds the outer edge of the steel ring piece, and the length of the vertical waterproof layer is the same as that of the lower edge of the axillary corner.
5. A plugging structure for a subway station precipitation wellhead as claimed in any one of claims 1-4, wherein said steel ring plate is provided with a plurality of through holes; the steel ring piece surface is equipped with first rib, first rib protrusion in steel ring piece surface.
6. The plugging structure for the dewatering wellhead of the subway station as claimed in claim 1, wherein the surface of said steel plate is provided with second ribs, said second ribs protruding from the surface of said steel plate; the second ribs protrude from the surface of the steel plate by 5 mm.
7. The plugging structure for a subway station precipitation wellhead as claimed in claim 1, wherein said axillary corners are in the shape of an inverted truncated cone.
8. The plugging structure for the dewatering wellhead of the subway station as claimed in claim 1, wherein a rubber gasket is arranged at the joint of the steel pipe and the steel ring.
9. The plugging structure for the dewatering wellhead of the subway station as claimed in claim 1, wherein said upper layer of steel bars and said lower layer of steel bars each comprise a plurality of steel bars, said plurality of steel bars are arranged in a criss-cross manner to form a crossing region, and the area of the crossing region is not less than the area of said steel plate.
10. The plugging structure for a subway station dewatering wellhead as claimed in claim 1, wherein the strength of the concrete inside the axillary angle is higher than the strength of the concrete inside the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480908.1U CN210658409U (en) | 2019-09-06 | 2019-09-06 | A block structure for subway station precipitation well head |
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|---|---|---|---|
| CN201921480908.1U CN210658409U (en) | 2019-09-06 | 2019-09-06 | A block structure for subway station precipitation well head |
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| CN210658409U true CN210658409U (en) | 2020-06-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468862A (en) * | 2019-09-06 | 2019-11-19 | 广州地铁设计研究院股份有限公司 | A kind of plugging structure for subway station precipitation well head |
| CN114427233A (en) * | 2022-03-01 | 2022-05-03 | 中国建筑第八工程局有限公司 | Precipitation wellhead plugging device and construction method thereof |
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2019
- 2019-09-06 CN CN201921480908.1U patent/CN210658409U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468862A (en) * | 2019-09-06 | 2019-11-19 | 广州地铁设计研究院股份有限公司 | A kind of plugging structure for subway station precipitation well head |
| CN114427233A (en) * | 2022-03-01 | 2022-05-03 | 中国建筑第八工程局有限公司 | Precipitation wellhead plugging device and construction method thereof |
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