CN211008655U - Underpass subway supporting structure - Google Patents
Underpass subway supporting structure Download PDFInfo
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- CN211008655U CN211008655U CN201921433491.3U CN201921433491U CN211008655U CN 211008655 U CN211008655 U CN 211008655U CN 201921433491 U CN201921433491 U CN 201921433491U CN 211008655 U CN211008655 U CN 211008655U
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Abstract
The utility model relates to a underpass subway supporting structure, which comprises a working well, wherein the working well vertically extends towards the underground along two sides of the existing subway station; the support frame is arranged below the existing subway station and communicated with the working well, and forms a passage which penetrates through the subway downwards and comprises a pipe curtain wall; the connecting piece, connecting support frame, working well and current subway station are connected to the connecting piece for prevent that current subway station warp. According to the technical scheme provided by the application, the pipe curtain support has high rigidity and strong bearing capacity on the upper station, the deformation of the upper station can be effectively controlled, the vertical clear distance between a newly-built structure and the existing station is reduced, and the manufacturing cost is saved; secondly, a mode that a pipe curtain wall is combined with a freezing pipe is adopted, the pipe curtain serves as a supporting structure, the freezing curtain and a pipe curtain locking port form two water-stopping curtains together, the freezing amount is reduced while water stopping is guaranteed, and deformation influence of frost heaving and thaw collapse on the existing subway station is well controlled.
Description
Technical Field
The utility model relates to a building engineering field especially relates to a wear subway supporting construction down.
Background
In the development process of cities, subways play a vital role by virtue of the characteristics of large passenger capacity, high speed and punctuality. Along with the increase of subway construction strength in recent years, subway lines are gradually formed into nets in pieces, transfer stations are increased day by day, but as the interval time of planning rounds of subway construction is longer, whether a long-term transfer station exists or not can not be determined in the early design process of part of subway stations of an early batch, or the specific position of the transfer station is uncertain, so that the reservation can not be carried out on the structure, and the method mainly shows that: the diameter of a building enclosure structure (such as an underground continuous wall or cast-in-situ bored pile steel bars) of a station is large, the space between the steel bars is small, and a shield machine cannot cut, so that the implementation of a subway structure in the later period is influenced, and the problems caused by the situation tend to be obvious along with the further deepening of subway construction in large and medium cities.
The underground excavation method is used for controlling the engineering risk of the underground excavation method and controlling the deformation of the upper operation station, and particularly, the following problems can be met in a soft soil area with a high water level:
1. newly-built undercut structure need be located the deeper position in existing station below, has the confined water risk of gushing suddenly, leads to the engineering unable implementation. In addition, once underground water and soil gushes in, the subway station operated above is inevitably deformed greatly, and the surrounding buildings, roads and pipelines are adversely affected.
2. The deformation control requirement of the upper subway station is extremely high, and the normal operation cannot be influenced. If the design and construction measures are not in place, uneven settlement of the upper operated station structure can be caused, even larger deformation is generated, and the operation safety is threatened.
3. The stress safety design of the new and old structure is complex in the permanent use stage. The new structure should be able to bear the vertical load of existing structure, should possess safe and reliable's biography power route between the two, ensures that the top of existing structure bottom plate below holds in the palm stably.
4. Newly-built structure in current subway station below often need chisel out the diaphragm wall and the pile foundation etc. of existing subway station, weakens current subway station anti bearing capacity that floats.
At present, a subway structure is newly built below an operation subway station under a condition that a long-term shield is not reserved for a soft soil area with a high water level, the construction difficulty is high in practice, the frozen body is large in size, an anti-floating structure in the existing subway station is easily damaged in the construction process, the deformation risk of the existing subway station is increased, and the normal operation of the existing subway station is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at newly building a station below the existing subway station, solving the problems of confined water gushing, large construction amount of frozen soil and the like when underground excavation underpass is performed, and simultaneously controlling the deformation of the existing station above, the new and old structure can transfer force clearly and effectively, and the existing station operation is not influenced, the underpass subway supporting structure and the manufacturing method thereof are needed to be provided.
A underpass subway supporting structure comprises a working well, wherein the working well vertically extends towards the underground along two sides of an existing subway station; the support frame is arranged below the existing subway station and communicated with the working well, and forms a passage which penetrates through the subway from bottom to top and comprises a pipe curtain wall; the connecting piece, the connecting piece is connected the support frame the working well with current subway station is used for preventing current subway station warp.
Further, the cross section of the tube curtain wall comprises a closed structure formed by a plurality of pipelines connected side by side, and the channel is arranged along the interior of the tube curtain wall.
Furthermore, the pipeline which can be manually drilled is arranged at the position of the pile foundation below the existing subway station.
Furthermore, a stiffening plate is arranged inside the pipeline.
Further, the support frame includes the first waterproof layer that constitutes by the thick liquid that fills, first waterproof layer is used for filling the clearance between the pipeline of a plurality of connections side by side.
Furthermore, freezing pipes are arranged inside the plurality of pipelines connected side by side and used for freezing soil layers around the pipelines and forming a second waterproof layer of the support frame.
Further, the support frame still includes a plurality of inner liners, a plurality of inner liners set up in the pipe curtain wall and run through current subway station, the inside setting of inner liner the passageway.
Further, the working well is close to one side of the existing subway station comprises a plate wall structure, two sides of the existing subway station comprise a ground wall structure, and the supporting frame penetrates through the plate wall structure and the ground wall structure.
Furthermore, the connecting piece comprises an upper connecting piece and a lower connecting piece, the upper connecting piece and the lower connecting piece are respectively connected with the supporting frame, the plate wall structure and the ground wall structure, and the plate wall structure and the ground wall structure are positioned above and below the supporting frame, so that the underground railway supporting structure and the existing subway station are combined into a whole.
Further, the connecting piece still includes anti device that floats, anti device that floats sets up in the siding wall structure with on the ground wall structure for prevent the deformation of integrated structure.
Adopt the technical scheme that this application provided, not only satisfied the demand of building new subway station under current subway station, also applicable to newly-built structure in current underground frame structure below. The underground subway supporting structure provided by the application has the advantages that the pipe curtain supporting rigidity is high, the supporting capacity for an upper station is high, the deformation control for the upper station is favorable, the vertical clear distance between a newly-built structure and the existing station can be reduced, the buried depth of the newly-built station is reduced, and the manufacturing cost is saved; secondly, a mode that a pipe curtain wall is combined with a freezing pipe is adopted, the pipe curtain serves as a supporting structure, the freezing curtain and a pipe curtain locking port form two water-stopping curtains together, the amount of the frozen object is greatly reduced under the condition that water stopping is guaranteed, and the deformation influence of frost heaving and thaw collapse on the existing subway station can be well controlled.
In addition, newly-built stations and working wells are arranged on two sides of the existing subway station, and the high-water-level stratum underground excavation engineering risk is high, so that once a dangerous situation occurs, such as confined water gushing, measures can be taken from the opposite side to remedy, and if freezing holes are added from the opposite side to implement freezing, the stability of water and soil below the existing subway station is ensured. And finally, the newly-built subway station is built next to the existing subway station, the underground excavation section only needs to meet the requirement of a train passing limit, the underground excavation amount is small, and the influence on the safety and the construction period of underground excavation construction and the existing station is small.
Various specific structures of the present application, as well as the functions and effects thereof, will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a working well in embodiment 1 of the present application;
FIG. 2 is a support frame tooling diagram according to example 1 of the present application;
FIG. 3 is a side view of the pipe curtain wall of embodiment 1 of the present application;
FIG. 4 is a partial enlarged view of the pipe curtain wall 3-1 according to embodiment 1 of the present application;
fig. 5 is a front view of an underpass subway supporting structure in embodiment 1 of the present application;
fig. 6 is a side view of an underpass subway supporting structure in embodiment 1 of the present application;
fig. 7 is a side view of an underpass subway supporting structure in embodiment 2 of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be further clearly and completely described below with reference to the accompanying drawings, but it should be noted that the following embodiments are only some preferred embodiments in the present application, and do not refer to all embodiments covered by the technical solutions of the present application.
It should be noted that when an element is referred to as being "fixed" to another element in the description of the present application, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a schematic structural diagram of a working well in embodiment 1 of the present application. The two sides of the existing subway station 1 are provided with the ground wall structures 11, the two sides of the existing subway station 1 are respectively excavated to form the working well 2, the interior of the working well 2 is reinforced and protected, one side of the working well 2 close to the existing subway station 1 is provided with the plate wall structure 21, and preferably, the plate wall structure 21 is close to the ground wall structures 11. The construction environment that wears the subway under the construction is provided on the one hand to work well 2, and simultaneously after accomplishing the later stage construction, work well 2 can reform transform into the platform of newly-built subway station, consequently, work well 2 sets up near current subway station 1, and follow-up again is connected both, not only can make new and old subway station closely combine together, can greatly save construction cost simultaneously.
Fig. 2 shows a support frame work pattern according to example 1 of the present application. The support frame 3 is arranged below the existing subway station 1 and communicated with the working wells 2 on two sides, and the support frame 3 forms a channel of a newly-built subway station and comprises a pipe curtain wall 31. Further, the supporting frames 3 penetrate the panel wall structure 21 and the floor wall structure 11.
Fig. 3 is a side view of the pipe curtain wall of embodiment 1 of the present application, and the pipe curtain wall 31 is disposed under the floor 12 of the existing subway station 1, and its cross section includes a closed structure formed by a plurality of pipes 311 connected side by side, and a passage for newly-built subway is disposed inside the closed structure. The pipelines 311 constituting the pipe curtain wall 31 are preferably steel pipes with special structures, and the lock 112 and the lock 113 are disposed between adjacent pipelines 311, and particularly, see a partial enlarged view of the pipe curtain wall 3-1 of embodiment 1 of the present application shown in fig. 4. In addition, the stiffening plates are arranged inside the pipelines 311, so that the strength of the pipelines 311 is increased, and the supporting strength of the pipe curtain wall 31 is improved.
By adopting the pipe curtain wall 31 with the structure, the size of the pipeline 311 is selected according to the design scheme, and the pipeline 311 is jacked into the underground soil layer through the working wells 2 at the two sides to form the pipe curtain wall 31 which is connected with each other. Further, after the construction of the tube curtain wall 31 is completed, grouting is filled into the gap between the adjacent pipelines 311 to form a first waterproof layer 312, and after the first waterproof layer 312 is solidified, a soil layer on the periphery of the tube curtain wall 31 is frozen through the freezing tubes in the pipelines 311 to form a soil layer with a thickness of 1 meter which can be frozen, so that a second waterproof layer 313 of the tube curtain wall 31 is formed.
It should be noted that the cross section of the pipe curtain wall 31 shown in fig. 3 is a rectangular structure, but other types of structures, such as a circle, an ellipse, etc., can be constructed as a passage passing through the subway according to actual needs, which is allowed by the present application, and those skilled in the art can design a suitable structure of the pipe curtain wall 31 according to engineering needs.
In addition, when the pipeline 311 is pushed into the underground soil layer from the working well 2, a longer pipeline 311, such as a through pipe, can be selected and used under the condition that no barrier exists; but when meeting obstacles, the working well 2 can be jacked from the two sides respectively, and the obstacles are arranged between the two adjacent pipelines 311. Meanwhile, in order to make the pipeline 311 have better strength, a stiffening plate is preferably arranged in the pipeline 311 to enhance the supporting strength.
Fig. 5 shows a front view of an underpass subway supporting structure in embodiment 1 of the present application, working wells 2 are excavated on two sides of an existing subway station 1, a support frame 3 is arranged below the existing subway station 1, the support frame 3 is communicated with the working wells 2, and the underpass subway supporting structure comprises a pipe curtain wall 31, a first waterproof layer 312, a second waterproof layer 313, an inner liner 32 and a channel 33. When the support frame 3 penetrates through the existing subway station 1, the enclosing and supporting structures below the existing subway station 1, particularly the ground wall structures 11 on two sides of the existing subway station 1, and the plate wall structure 21 of the working well 2 need to be damaged. The ground wall structure 11 is not only used for supporting the existing subway station 1, but also plays a role in resisting floating, and prevents the existing subway station 1 from floating and deforming due to the pressure of underground water. After the ground wall structure 11 is destroyed, in order to prevent the upper floating or sinking deformation of current subway station 1, through last connecting piece 34, lower connecting piece 35 will be located the ground wall structure 11 of support frame 3 top and below respectively, panel wall structure 21 and support frame 3 link up, make newly-built subway station and current subway station combine as an organic whole and become the integral structure, finally, at the top of ground wall structure 11 and panel wall structure 21, mid-mounting anti-floating device 36, prevent that current subway station ground wall structure 11 from opening the hole because of the lower part and causing anti buoyancy loss, cause deformation such as structure come-up or sink.
It should be noted that although the waterproof layer according to the above technical solution includes the first waterproof layer 312 and the second waterproof layer 313, the present application is not limited to two waterproof layers, but the present application is planned from an economic point of view, and a person skilled in the art may add the waterproof layers with appropriate thickness and quantity according to actual needs and in combination with the technical solution mentioned in the present application.
Adopt the technical scheme that this application provided, newly-built subway station can be tightly in the below setting of current subway station 1, and is lower to the excavation depth requirement of working well 2, and overall structure is compact, and construction cost economy has overcome other technical scheme when establishing new subway station, need a large amount of excavations, and the problem of construction complicacy has reduced the influence to current subway station 1 operation simultaneously.
Fig. 6 is a side view of a support structure of an underpass subway in embodiment 1 of the present application. The inside of pipe curtain wall 31 sets up a plurality of inner liners, further promotes the supporting role to newly-built subway station. The lining layer 32 is arranged close to the inner wall of the pipe curtain wall 31 to form a complete and smooth plane. It should be noted that the thickness or the number of the inner liner 32 may be designed according to the actual engineering requirements. The channel 33 is arranged close to the inner part of the lining layer 32, the channel 33 can be transported to a construction site after being manufactured in a factory in advance, the channel 33 is jacked through the working well 2 on one side, and therefore a channel penetrating through a subway is formed, and the channel can be cast on the site. Compare in traditional mine excavation method, make the passageway 33 of accomplishing in advance, can be very big save engineering time and excavation work load, simultaneously, have more even stress surface, the bearing effect is better. Thus, one skilled in the art can optimize the design according to engineering needs.
Fig. 7 is a side view of the pipe curtain wall according to embodiment 2 of the present application, wherein a load-bearing pile foundation 13 is disposed below an existing subway station 1, and since the pile foundation 13 has a certain rigidity and cannot directly penetrate through a pipeline 311, when a subway station is newly built below a bottom plate 12 of the existing subway station 1, when the pipe curtain wall 31 is disposed, the pile foundation 13 needs to be manually chiseled at a position where the pipe curtain wall 31 penetrates through the pile foundation 13, and therefore, the pipeline 311 disposed at the station should have a cavity for a worker to chisel, such as a large-diameter pipeline 311.
Adopt the technical scheme that this application provided, not only satisfied the demand of building new subway station under current subway station, also applicable to newly-built structure in current underground frame structure below. The underground subway supporting structure provided by the application has the advantages that the pipe curtain supporting rigidity is high, the supporting capacity for an upper station is high, the deformation control for the upper station is favorable, the vertical clear distance between a newly-built structure and the existing station can be reduced, the buried depth of the newly-built station is reduced, and the manufacturing cost is saved; secondly, a mode that a pipe curtain wall is combined with a freezing pipe is adopted, the pipe curtain serves as a supporting structure, the freezing curtain and a pipe curtain locking port form two water-stopping curtains together, the amount of the frozen object is greatly reduced under the condition that water stopping is guaranteed, and the deformation influence of frost heaving and thaw collapse on the existing subway station can be well controlled.
In addition, newly-built stations and working wells are arranged on two sides of the existing subway station, and the high-water-level stratum underground excavation engineering risk is high, so that once a dangerous situation occurs, such as confined water gushing, measures can be taken from the opposite side to remedy, and if freezing holes are added from the opposite side to implement freezing, the stability of water and soil below the existing subway station is ensured. And finally, the newly-built subway station is built next to the existing subway station, the underground excavation section only needs to meet the requirement of a train passing limit, the underground excavation amount is small, and the influence on the safety and the construction period of underground excavation construction and the existing station is small.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a wear subway supporting construction down which characterized in that includes:
the working well vertically extends towards the underground along two sides of the existing subway station;
the support frame is arranged below the existing subway station and communicated with the working well, and forms a passage which penetrates through the subway from bottom to top and comprises a pipe curtain wall;
the connecting piece, the connecting piece is connected the support frame the working well with current subway station is used for preventing current subway station warp.
2. An underpass subway support structure as claimed in claim 1, wherein said cross section of said tube curtain wall comprises a closed structure constituted by a plurality of pipes connected side by side, said passage being provided along the inside of said tube curtain wall.
3. The underpass subway support structure of claim 2, wherein said pipes for manual drilling are provided through the pile foundation below said existing subway station.
4. The underpass subway support structure of claim 2, wherein stiffening plates are arranged inside said pipelines.
5. An underpass subway support structure as claimed in claim 2, wherein said support frame includes a first waterproof layer of grouting grout for filling gaps between said plurality of side-by-side connected pipes.
6. An underpass subway supporting structure as claimed in claim 5, wherein freezing pipes are arranged inside said plurality of side-by-side connected pipelines, said freezing pipes being used for freezing soil layers around said pipelines and constituting a second waterproof layer of said supporting frame.
7. The underpass subway supporting structure of claim 6, wherein said supporting frame further comprises a plurality of inner liners, said plurality of inner liners are disposed in said pipe curtain wall and run through said existing subway station, said inner liners are internally disposed with said channel.
8. The underpass subway support structure of claim 1, wherein said working well comprises a plate wall structure on one side near said existing subway station, and a ground wall structure on both sides of said existing subway station, said support frame penetrating said plate wall structure and said ground wall structure.
9. The underpass subway support structure as claimed in claim 8, wherein said connecting members comprise upper connecting members and lower connecting members, said upper connecting members and said lower connecting members respectively connect said supporting frames and said panel wall structure and said underground wall structure above and below said supporting frames, so that said underpass subway support structure and said existing subway station are integrated.
10. An underpass subway support structure as claimed in claim 9, wherein said connecting members further comprise anti-floating means provided on said panel wall structure and said ground wall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921433491.3U CN211008655U (en) | 2019-08-30 | 2019-08-30 | Underpass subway supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921433491.3U CN211008655U (en) | 2019-08-30 | 2019-08-30 | Underpass subway supporting structure |
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| CN211008655U true CN211008655U (en) | 2020-07-14 |
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| CN201921433491.3U Active CN211008655U (en) | 2019-08-30 | 2019-08-30 | Underpass subway supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608047A (en) * | 2019-08-30 | 2019-12-24 | 同济大学建筑设计研究院(集团)有限公司 | Underpass subway supporting structure and manufacturing method thereof |
| TWI757151B (en) * | 2021-04-15 | 2022-03-01 | 萬德營造有限公司 | Waterproof Membrane and Rebar Positioning Structure of Guanmi Underpass |
-
2019
- 2019-08-30 CN CN201921433491.3U patent/CN211008655U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608047A (en) * | 2019-08-30 | 2019-12-24 | 同济大学建筑设计研究院(集团)有限公司 | Underpass subway supporting structure and manufacturing method thereof |
| TWI757151B (en) * | 2021-04-15 | 2022-03-01 | 萬德營造有限公司 | Waterproof Membrane and Rebar Positioning Structure of Guanmi Underpass |
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