CN212716624U - Steel lining plate and open caisson combined type shaft structure - Google Patents
Steel lining plate and open caisson combined type shaft structure Download PDFInfo
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- CN212716624U CN212716624U CN202021753853.XU CN202021753853U CN212716624U CN 212716624 U CN212716624 U CN 212716624U CN 202021753853 U CN202021753853 U CN 202021753853U CN 212716624 U CN212716624 U CN 212716624U
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- open caisson
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Abstract
The utility model provides a steel lining board and open caisson combining type shaft structure, including the concrete well body on lower part and the steel lining board well body on upper portion, the top of steel lining board strip surpasss ground, the reentrant corner department that the steel lining board strip surpassed between ground part and the ground is equipped with a week breakwater, the upside of fixed connection at the steel lining board bottom plate is fallen and put to the bottom of steel lining board strip, the internal diameter of steel lining board well body is greater than the external diameter of the concrete well body, open the entrance to a cave that supplies the size of the concrete well body to suit on the steel lining board bottom plate, the concrete well body is including the reinforced concrete's of the open caisson wall and open caisson's bottom plate, the open caisson wall passes the entrance to a cave and falls to put at the bottom of the foundation ditch, the. The utility model discloses a combination that the novel welt of upper strata was strutted and the open caisson combination of lower floor was strutted combines two kinds of independent supporting modes together, and the biggest advantage that has utilized two kinds of technologies has evaded the drawback of two kinds of technologies, practices thrift the cost.
Description
Technical Field
The utility model relates to a push pipe shaft, especially a steel welt and open caisson mating type shaft.
Background
In trenchless pipe-jacking construction, two construction modes are generally adopted for a working vertical shaft, a receiving vertical shaft and a temporary danger-removing vertical shaft in the emergency rescue process:
firstly, the single concrete open caisson is made of concrete, is small in general size and cannot be used for a large foundation pit, and meanwhile, the requirements on underground pipelines and structures during construction are high, so that the problems that the underground pipelines and the structures cannot be recycled, pipelines cannot exist in a well chamber range and the like exist.
And secondly, the single steel lining plate open caisson cannot be used as the back of the jacking pipe and needs to be constructed independently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel welt and open caisson convolution shaft structure, to solve current single concrete deep well construction and deposit the technical problem that the size is less, can not be used for large-scale foundation ditch, high, the unable reuse of requirement and well room within range can not have the pipeline to pipeline, still need solve the unable technical problem who constructs the back as the push pipe back alone of single steel welt open caisson.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a combined vertical shaft structure of a steel lining plate and an open caisson, which comprises a concrete well body at the lower part and a steel lining plate well body at the upper part,
the steel lining well body comprises at least three steel lining strips which are bolted up and down and a reinforced concrete steel lining bottom plate, the tops of the steel lining strips exceed the ground, a circle of water retaining wall is arranged at the internal corner between the part of the steel lining strips, which exceeds the ground, and the ground, the bottom of each steel lining strip is arranged on the upper side of the steel lining bottom plate and fixedly connected with the steel lining bottom plate, the outer edge of the steel lining bottom plate is flush with the outer edge of the steel lining well body, the inner diameter of the steel lining well body is larger than the outer diameter of the concrete well body, and the steel lining bottom plate is provided with a hole for the concrete well body to adapt to the size,
the concrete well body comprises a sinking well wall and a reinforced concrete sealing plate of the sinking well, the sinking well wall penetrates through the opening and is placed at the bottom of the foundation pit, the top of the concrete well body extends into the steel lining plate well body, and the sealing plate is fixedly connected to the inner side of the bottom of the sinking well wall.
The sinking well wall is a prefabricated reinforced concrete tertiary pipe, and the pipe diameter is 1200mm-3000 mm.
The thickness of the steel substrate plate is at least 200 mm.
The distance between the upper side of the steel lining plate bottom plate and the top end face of the concrete well body is 300 mm.
The thickness of the back cover plate is at least 200 mm.
The inner diameter of the steel lining plate well body is larger than the outer diameter of the concrete well body by 150 mm.
The steel lining plate bottom plate is a cast-in-place reinforced concrete plate.
And the bottom end surface of the steel lining plate well body is positioned 50cm above the natural water surface in the foundation pit.
The steel lining plate well body comprises at least three steel lining plate strips which are bolted up and down, the side wall of the steel lining plate well body is provided with a grouting hole for connecting the vertical shaft structure and the foundation pit wall through grouting, and the grouting hole is arranged on the third steel lining plate strip from bottom to top.
Each steel lining plate strip of the steel lining plate well body comprises a group of spliced steel lining plate units, the left and right adjacent steel lining plate units are bolted through bolts, and the upper and lower adjacent steel lining plate units are arranged in a staggered joint mode.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
the utility model discloses a combination that the novel welt of upper strata was strutted and the open caisson combination of lower floor was strutted, combine two kinds of independent supporting mode together, the biggest advantage that has utilized two kinds of technologies, the drawback of two kinds of technologies has been avoidd, the cost is saved, upper portion steel lining board well body installation is simple quick, it is detachable after the construction is accomplished, retrieve used repeatedly again, can effectual reduction construction period, welt cross-section weight has the bolt tie point lightly, the workman easily carries and assembles, the welt can be built, so can be in narrow and small local saving, reduce environmental pollution, reduce the occupation of well body totality to underground space. When the upper steel lining plate well body is constructed, the bolt connection can be completed only by the inner side, and an external working space is not needed. Therefore, the foundation pit can be assembled at a place close to the ground, the small foundation pit can be conveniently constructed, large-scale machinery is not needed, the noise is low during assembly construction, the influence on the periphery is small, and the influence of construction on the periphery can be reduced as far as possible.
Meanwhile, the lower concrete well body can be directly used as the back of the jacking pipe. Compared with an all-concrete open caisson, the open caisson has the advantages that materials are saved, the occupation of underground space is reduced, the cost is reduced, and compared with an all-steel lining plate well body, the open caisson does not need to be constructed independently to push the back of the pipe.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic plan view of the present invention.
Fig. 2 is a longitudinal sectional view of fig. 1.
Reference numerals: 1-sinking well wall, 2-sealing bottom plate, 3-steel lining plate, 4-steel lining plate well body, 41-steel lining plate unit, 5-ground, 6-water retaining wall, 7-grouting hole, 8-bolt and 9-natural water surface in foundation pit.
Detailed Description
Embodiment referring to fig. 1-2, a combined steel lining and open caisson type shaft structure comprises a lower concrete shaft body and an upper steel lining shaft body 4.
The steel lining well body 4 comprises at least three steel lining strips which are bolted up and down and a steel lining bottom plate 3 made of reinforced concrete, the top of each steel lining strip exceeds the ground 5, a circle of water retaining wall 6 is arranged at the internal corner between the part of each steel lining strip exceeding the ground 5 and the ground 5, the bottom of each steel lining strip is placed and fixedly connected to the upper side of the steel lining bottom plate 3, the outer edge of the steel lining bottom plate 3 is flush with the outer edge of the steel lining well body 4, the inner diameter of the steel lining well body 4 is larger than the outer diameter of the concrete well body, and a hole for the concrete well body to adapt to the size is formed in the steel lining bottom plate 3.
The concrete well body comprises a sinking well wall 1 and a reinforced concrete sealing plate 2 of the sinking well, the sinking well wall 1 penetrates through the opening and is placed at the bottom of a foundation pit, the top of the concrete well body extends into a steel lining plate well body 4, and the sealing plate 2 is fixedly connected to the inner side of the bottom of the sinking well wall 1.
The sinking well wall 1 is a prefabricated reinforced concrete tertiary pipe, and the pipe diameter D is 1200mm-3000 mm. The thickness a of the steel lining plate bottom plate 3 is at least 200 mm. The distance b between the upper side of the steel lining plate bottom plate 3 and the top end face of the concrete well body is 300 mm. The thickness of the back cover plate 2 is at least 200 mm.
The inner diameter of the steel lining plate well body 4 is larger than the outer diameter of the concrete well body by 150 mm. The steel lining plate bottom plate 3 is a cast-in-place reinforced concrete plate. The bottom end face of the steel lining plate well body 4 is located 50cm above the natural water surface 9 in the foundation pit.
The steel lining plate well body 4 comprises at least three steel lining plate strips which are bolted up and down, the side wall of the steel lining plate well body is provided with a grouting hole 7 for connecting the vertical shaft structure and the foundation pit wall in a grouting way, and the grouting hole 7 is arranged on the third steel lining plate strip from bottom to top. Each steel lining plate strip of the steel lining well body 4 comprises a group of spliced steel lining plate units 41, the left and right adjacent steel lining plate units 41 are bolted through bolts 8, and the upper and lower adjacent steel lining plate units 41 are arranged in a staggered manner.
The utility model discloses a work progress as follows:
firstly, measuring and paying off;
step two, excavating soil to form a foundation pit, excavating 150mm outside the steel lining plate well body, and then assembling a first steel lining plate strip on the ground;
step three, hoisting a first steel lining plate strip when the pit of the foundation pit is 300mm deep, manufacturing a water retaining wall around the first steel lining plate strip, and reinforcing the periphery of the lining plate;
step four, continuously excavating to the depth of 1.3 m, and mounting subsequent steel lining plate strips until the specified depth forms a steel lining plate well body; the specified depth is 50cm above the natural water surface in the foundation pit;
fifthly, a steel lining plate bottom plate with the thickness of 20cm is poured below the steel lining plate well body, and a immersed tube mounting hole is reserved in the middle of the steel lining plate bottom plate;
hoisting the open caisson wall of the concrete well body, then finishing the steel lining plate bottom plate, and excavating soil in the open caisson wall;
sinking the sinking well wall, wherein the soil excavation depth is less than 60cm each time until the specified depth is reached;
step eight, pouring a sealing bottom plate with the thickness of 20cm in the caisson wall;
and step nine, grouting cement paste at the periphery of the steel lining plate well body to fill the foundation pit wall.
Claims (10)
1. A combined vertical shaft structure of a steel lining plate and an open caisson is characterized by comprising a concrete well body at the lower part and a steel lining plate well body (4) at the upper part,
the steel lining well body (4) comprises at least three steel lining strips which are bolted up and down and a steel lining bottom plate (3) made of reinforced concrete, the tops of the steel lining strips exceed the ground (5), a circle of water retaining wall (6) is arranged at the internal corner between the part of the steel lining strips exceeding the ground (5) and the ground (5), the bottoms of the steel lining strips are dropped and fixedly connected to the upper side of the steel lining bottom plate (3), the outer edge of the steel lining bottom plate (3) is flush with the outer edge of the steel lining well body (4), the inner diameter of the steel lining well body (4) is larger than the outer diameter of the concrete well body, a hole for the concrete well body to adapt to the size is formed in the steel lining bottom plate (3),
the concrete well body comprises a sinking well wall (1) and a reinforced concrete sealing plate (2) of the sinking well, the sinking well wall (1) penetrates through the opening and is placed at the bottom of the foundation pit, the top of the concrete well body extends into the steel lining plate well body (4), and the sealing plate (2) is fixedly connected to the inner side of the bottom of the sinking well wall (1).
2. The steel liner plate and open caisson combined type shaft structure of claim 1, wherein: the sinking well wall (1) is a prefabricated reinforced concrete tertiary pipe, and the pipe diameter is 1200mm-3000 mm.
3. The steel liner plate and open caisson combined type shaft structure of claim 1, wherein: the thickness of the steel lining plate bottom plate (3) is at least 200 mm.
4. The steel liner plate and open caisson combined type shaft structure of claim 3, wherein: the distance between the upper side of the steel lining plate bottom plate (3) and the top end face of the concrete well body is 300 mm.
5. The steel liner plate and open caisson combined type shaft structure of claim 1, wherein: the thickness of the bottom sealing plate (2) is at least 200 mm.
6. The steel liner plate and open caisson combined type shaft structure of claim 1, wherein: the inner diameter of the steel lining plate well body (4) is larger than the outer diameter of the concrete well body by 150 mm.
7. The combined type vertical shaft structure of the steel lining plate and the open caisson according to claim 3 or 4, wherein: the steel lining plate bottom plate (3) is a cast-in-place reinforced concrete plate.
8. The combined type vertical shaft structure of the steel lining plate and the open caisson according to claim 1 or 6, wherein: the bottom end face of the steel lining plate well body (4) is located 50cm above a natural water surface (9) in the foundation pit.
9. The steel liner plate and open caisson combined type shaft structure of claim 8, wherein: the steel lining plate well body (4) comprises at least three steel lining plate strips which are bolted up and down, the side wall of the steel lining plate well body is provided with a grouting hole (7) for connecting the vertical shaft structure and the foundation pit wall through grouting, and the grouting hole (7) is arranged on the third steel lining plate strip from bottom to top.
10. The steel liner plate and open caisson combined type shaft structure of claim 9, wherein: each steel lining plate strip of the steel lining plate well body (4) comprises a group of spliced steel lining plate units (41), the two steel lining plate units (41) which are adjacent from left to right are bolted through bolts (8), and the two steel lining plate units (41) which are adjacent from top to bottom are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021753853.XU CN212716624U (en) | 2020-08-20 | 2020-08-20 | Steel lining plate and open caisson combined type shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021753853.XU CN212716624U (en) | 2020-08-20 | 2020-08-20 | Steel lining plate and open caisson combined type shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212716624U true CN212716624U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021753853.XU Active CN212716624U (en) | 2020-08-20 | 2020-08-20 | Steel lining plate and open caisson combined type shaft structure |
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| Country | Link |
|---|---|
| CN (1) | CN212716624U (en) |
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- 2020-08-20 CN CN202021753853.XU patent/CN212716624U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Nie Xiaoshuang Inventor after: Nie Shuming Inventor after: Ma Junying Inventor before: Nie Xiaoshuang Inventor before: Nie Shuming Inventor before: Ma Yingjun |