CN211873283U - Steel shell type reinforced concrete water collecting well structure of soft soil foundation pump station - Google Patents
Steel shell type reinforced concrete water collecting well structure of soft soil foundation pump station Download PDFInfo
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- CN211873283U CN211873283U CN201922422606.5U CN201922422606U CN211873283U CN 211873283 U CN211873283 U CN 211873283U CN 201922422606 U CN201922422606 U CN 201922422606U CN 211873283 U CN211873283 U CN 211873283U
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Abstract
The utility model discloses a soft soil foundation pump station steel shell formula reinforced concrete sump pit structure. The utility model discloses a permanent sump pit outer wall is done simultaneously concurrently as the outer facade template of sump pit wall to the steel sheet, and the vertical foundation ditch excavation of sump pit is carried out after the sump pit outer wall steel mould sinks, and after the excavation was accomplished, the plain concrete bed course was pour, the inboard reinforced concrete wall of a well, the well bottom plate of sump pit outer wall steel mould and the synchronous ligature of pump station bottom plate reinforcing bar, the concrete is pour in step, forms overall structure. The utility model can avoid large area slope excavation and foundation pit precipitation, and reduce the construction difficulty; the influence of sump pit construction on the construction of a pump station bottom plate is reduced, and the overall construction speed of the project is improved; the reinforced concrete consumption of the earth excavation and water collection well is reduced, and the investment is saved.
Description
Technical Field
The utility model relates to a hydraulic engineering's pump station sump pit structure especially relates to soft soil foundation pump station steel casing formula reinforced concrete sump pit structure.
Background
The pump station sump pit is arranged usually under the pump station bottom plate, is close to the inlet channel, and its main function does: the water seepage at the flange of the joint of the water inlet and the water outlet and the flow channel and the water pump joint is collected during the normal operation of the pump station, the water in the flow channel and the pump body is collected during the overhaul of the pump station, and the water is discharged through the water suction pump arranged at the bottom of the water collecting well. The size of the pump station water collecting well is mainly related to the pump type of the pump station, the elevation of the bottom plate surface and the upstream and downstream water levels. For a pump station, although the size of the water collecting well is not large, the water collecting well needs to be constructed because the water collecting well is positioned below the bottom plate, and after the foundation pit is excavated to the bottom elevation of the bottom plate, the water collecting well needs to be further dug. Traditional pump station sump pit generally adopts formula reinforced concrete structure of falling slope, is even as an organic whole with the pump station bottom plate, and one-time pouring, the wholeness is stronger, and structural safety degree is higher. However, most pump stations in coastal areas are built on deep multi-element soft soil foundations, the water content and the pore ratio of the foundations are large, the shear strength and the permeability are low, the compressibility and the sensitivity are high, and the slope-type water collecting well on the soft soil foundation has the following defects:
(1) the pump station water pump mounting elevation is low, and its bottom plate is generally lower than the river bottom, and for reaching the purpose of collecting the pump house infiltration, the sump pit must still be lower than the pump house bottom plate, consequently, its sump pit need continue to dig deeply on bottom plate excavation end elevation basis. In order to avoid the collapse of the side slope, the excavation gradient of the foundation pit of the soft soil foundation needs to be slowed down, and the excavation surfaces of the surrounding slope excavation are larger, so that the engineering earthwork amount is increased.
(2) The soft soil foundation in the coastal region has high underground water level and large water content, when a sump pit is excavated and concrete is poured, accumulated water cannot exist in the pit, the deeper the excavation of the sump pit is, the higher the drainage requirement is, and even well point dewatering is required.
(3) The difficulty of the sump pit slope-laying excavation, slope position reinforcing steel bar configuration and concrete pouring is increased.
(4) The sump pit has certain influence to the construction of pump station bottom plate, and the sump pit construction degree of difficulty increases and will lead to the whole construction cycle of pump station extension, engineering cost to rise.
Therefore, the design idea of the water collecting well of the pump station needs to be improved, the construction procedure of the water collecting well is simplified, and the construction difficulty is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soft soil foundation pump station steel shell formula reinforced concrete sump pit structure to reduce the sump pit construction degree of difficulty, reduce sump pit excavation volume, thereby reach the purpose that improves pump station bottom plate construction conditions, accelerate the construction progress, reduce engineering cost.
The utility model discloses a following technical scheme realizes: the steel shell type reinforced concrete water collecting well structure of the soft soil foundation pump station mainly comprises a water collecting well outer wall steel mould, a reinforced concrete well wall and a reinforced concrete well bottom plate, wherein the water collecting well outer wall steel mould is welded into a whole by steel plates and can be welded by reinforcing angle steel; the steel mould of the outer wall of the water collecting well is used as an outer vertical surface template for the construction of the wall of the water collecting well and is also used as the outer wall of the permanent water collecting well; the upper end of the reinforced concrete well wall is connected with the pump station bottom plate, the lower end of the reinforced concrete well wall is connected with the reinforced concrete well bottom plate, and the pump station bottom plate, the reinforced concrete well wall and the reinforced concrete well bottom plate are synchronously poured to form an integral structure.
The rib can be properly added in the middle of the steel mould on the outer wall of the water collecting well so as to enhance the integral rigidity of the steel mould and prevent the steel mould from deforming in the processes of hoisting, sinking and soil body excavation.
The reinforced concrete well wall of the water collecting well can be made into a square, circular or elliptical section according to requirements.
The construction method of the steel shell type reinforced concrete water collecting well structure of the soft soil foundation pump station comprises the following steps:
s1, manufacturing a steel die of the outer wall of the water collecting well: blanking, cutting and welding a steel plate to manufacture and finish a steel mould of the outer wall of the water collecting well; and correcting the steel die on the outer wall of the water collecting well, and spraying an anticorrosive coating.
S2, hoisting and sinking the steel die on the outer wall of the water collecting well: and hoisting and sinking the steel die on the outer wall of the water collecting well to the designed elevation.
S3, soil excavation: and (5) excavating soil in the steel mould of the outer wall of the water collecting well, and if the steel mould of the outer wall of the water collecting well is inclined, timely correcting the position.
S4, pouring a cushion layer and clearing and chiseling a pile head: after the excavation is finished, pouring a plain concrete cushion layer; and (4) manually clearing and chiseling the super-cast reinforced concrete cast-in-place pile, wherein the pile head concrete of the reinforced concrete cast-in-place pile is exposed out of the cushion layer.
S5, binding steel bars and pouring concrete: and (3) synchronously binding the reinforced concrete well wall, the reinforced concrete well bottom plate and the pump station bottom plate by using reinforcing steel bars, erecting a template on the inner wall of the water collecting well, and synchronously pouring the reinforced concrete well wall, the reinforced concrete well bottom plate and the pump station bottom plate.
S6, removing the template of the inner wall of the water collecting well, and forming the water collecting well: and after the concrete strength of the reinforced concrete well wall, the reinforced concrete well bottom plate and the pump station bottom plate meets the requirement, removing the template on the inner wall of the water collecting well, and forming the water collecting well.
The utility model has the advantages that:
(1) the sump pit excavation volume reduces, and the construction degree of difficulty reduces. The vertical foundation pit excavation can be carried out after the steel mould on the outer wall of the water collecting well sinks, so that large-area slope excavation and foundation pit precipitation are avoided; the steel mould on the outer wall of the water collecting well is thin in thickness, light in weight and convenient to lift; no slope section, and low difficulty in binding steel bars and pouring concrete.
(2) The structural integrity is good. The sump pit is synchronous with the synchronous ligature of pump station bottom plate reinforcing bar, and the concrete is pour in step, and structural integrity is strong.
(3) The construction speed is fast, and the engineering investment is saved. The utility model can reduce the influence of the sump pit construction on the construction of the pump station bottom plate and improve the overall construction speed of the project; the reinforced concrete consumption of the earth excavation and water collection well is reduced, and the engineering investment is saved.
Drawings
Fig. 1 is a plan view of a steel shell type reinforced concrete water collecting well structure of a soft soil foundation pump station provided by the embodiment of the utility model;
FIG. 2 is a cross-sectional view I-I of FIG. 1;
fig. 3 is a sectional view ii-ii of fig. 1.
In the figure: 1-collecting well outer wall steel mould; 2-reinforcing angle steel; 3-a reinforced concrete well wall; 4-reinforced concrete well bottom plate; 5-plain concrete cushion; 6-pump station bottom plate; 7-pouring reinforced concrete into the pile; 8-steel grating cover plate.
Detailed Description
In order to make the objects, technical embodiments and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The utility model discloses mainly be applied to the weak soil foundation.
As shown in fig. 1 to fig. 3, the utility model discloses pump station steel shell formula reinforced concrete sump pit structure comprises sump pit outer wall steel mould 1, reinforcement angle steel 2, reinforced concrete well wall 3, reinforced concrete well bottom plate 4, and sump pit outer wall steel mould 1 is by reinforcing angle steel 2 welding formation wholly, and reinforced concrete well wall 3 and reinforced concrete well bottom plate 4 are pour in step with the synchronous ligature of the reinforcing bar of pump station bottom plate 6, concrete, form overall structure.
The utility model provides a steel-shell type reinforced concrete sump pit structure construction method as follows:
after a base plate plain concrete cushion layer 5 and a reinforced concrete cast-in-place pile foundation 7 (super-cast 0.8-1 m) of a construction pump station are constructed, the following steps are adopted:
s1, adopting a Q235 steel plate with the thickness of about 1cm and angle steel of 30 multiplied by 3Q235, blanking, cutting and welding to manufacture the square cylindrical water collecting well outer wall steel die 1. In order to further enhance the rigidity of the steel mould and prevent the steel mould from deforming in the processes of hoisting, sinking and soil body excavation, ribs are properly added in the middle of the steel mould 1 on the outer wall of the water collecting well. And after the steel die 1 for the outer wall of the water collecting well is manufactured, correcting and spraying an anticorrosive coating.
And S2, hoisting and sinking the steel mould 1 on the outer wall of the water collecting well to the designed elevation.
S3, vertically excavating the soil body in the steel mould 1 on the outer wall of the water collecting well to reach the elevation of the plain concrete bottom. If the steel die 1 on the outer wall of the water collecting well is found to incline in the soil body excavation process, the deviation needs to be corrected in time.
And S4, after the excavation is finished, pouring the plain concrete cushion layer 5, wherein the concrete strength grade of the plain concrete cushion layer 5 is C15. And (3) manually clearing and chiseling the super-cast reinforced concrete cast-in-place pile 7, wherein pile head concrete of the reinforced concrete cast-in-place pile 7 is exposed out of the plain concrete cushion layer by 5 cm or so by about 10 cm.
S5, synchronously binding the wall 3, the reinforced concrete well bottom plate 4 and the pump station bottom plate 6, and bending the exposed main reinforcement of the pile head of the cast-in-place pile 7 into a radial shape and binding the reinforcement of the reinforced concrete well bottom plate 4. Erect the inside plank sheathing of sump pit, with pump station bottom plate 6 synchronous concreting, concrete label is unanimous with the concrete of pump station bottom plate 6, and concrete strength grade is C30.
And S6, when the concrete meets the strength requirement, removing the wood template on the inner wall of the water collecting well, and forming the water collecting well. According to the operation management needs, the catchment well can be provided with a steel grating cover plate 8.
The above embodiments are described with reference to the accompanying drawings, but the scope of the invention is not limited thereto, and it should be noted that, for those skilled in the art, the technical solutions obtained by equivalent replacement or equivalent transformation without departing from the spirit of the invention, all of which belong to the protection scope of the invention.
Claims (5)
1. Soft soil foundation pump station steel shell formula reinforced concrete sump pit structure, its characterized in that: the water collecting well comprises a water collecting well outer wall steel mould, a reinforced concrete well wall and a reinforced concrete well bottom plate; the steel mould of the outer wall of the water collecting well is welded into a whole by steel plates, and the steel mould of the outer wall of the water collecting well is used as an outer vertical surface template for the construction of the wall of the water collecting well and is also used as the outer wall of the permanent water collecting well; the upper end of the reinforced concrete well wall is connected with the pump station bottom plate, the lower end of the reinforced concrete well wall is connected with the reinforced concrete well bottom plate, and the pump station bottom plate, the reinforced concrete well wall and the reinforced concrete well bottom plate are synchronously poured to form an integral structure.
2. A soft soil foundation pump station steel shell formula reinforced concrete sump pit structure of claim 1, its characterized in that: and a rib is arranged in the middle of the water collecting well outer wall steel mould.
3. A soft soil foundation pump station steel shell formula reinforced concrete sump pit structure of claim 1, its characterized in that: and the steel mould of the outer wall of the water collecting well is welded into a whole by steel plates through reinforced angle steel.
4. A soft soil foundation pump station steel shell formula reinforced concrete sump pit structure of claim 1, its characterized in that: the cross section of the reinforced concrete well wall is square, circular or elliptical.
5. A soft soil foundation pump station steel shell formula reinforced concrete sump pit structure of claim 1, its characterized in that: and a cover plate is arranged on the wellhead of the water collecting well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922422606.5U CN211873283U (en) | 2019-12-30 | 2019-12-30 | Steel shell type reinforced concrete water collecting well structure of soft soil foundation pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922422606.5U CN211873283U (en) | 2019-12-30 | 2019-12-30 | Steel shell type reinforced concrete water collecting well structure of soft soil foundation pump station |
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| Publication Number | Publication Date |
|---|---|
| CN211873283U true CN211873283U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922422606.5U Active CN211873283U (en) | 2019-12-30 | 2019-12-30 | Steel shell type reinforced concrete water collecting well structure of soft soil foundation pump station |
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| CN (1) | CN211873283U (en) |
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2019
- 2019-12-30 CN CN201922422606.5U patent/CN211873283U/en active Active
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Address after: 310002, No. 66, Funing lane, Shangcheng District, Zhejiang, Hangzhou Patentee after: Zhejiang water resources and Hydropower Survey and Design Institute Co.,Ltd. Address before: 310002, No. 66, Funing lane, Shangcheng District, Zhejiang, Hangzhou Patentee before: ZHEJIANG DESIGN INSTITUTE OF WATER CONSERVANCY & HYDROELECTRIC POWER |
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