CN111851578B - Construction method for local roof inverse building structure of subway station for moving and changing gravity flow pipe culvert - Google Patents
Construction method for local roof inverse building structure of subway station for moving and changing gravity flow pipe culvert Download PDFInfo
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- CN111851578B CN111851578B CN202010678986.3A CN202010678986A CN111851578B CN 111851578 B CN111851578 B CN 111851578B CN 202010678986 A CN202010678986 A CN 202010678986A CN 111851578 B CN111851578 B CN 111851578B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/16—Auxiliary devices rigidly or detachably arranged on sheet piles for facilitating assembly
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a construction method for a local roof inverted structure of a subway station for moving and changing a gravity flow pipe culvert, which is constructed in a rectangular station foundation pit, a circle of reinforced concrete continuous wall is constructed around the foundation pit, the interior of the reinforced concrete continuous wall is divided into a left area, a middle area and a right area A, B, C, and the gravity flow pipe culvert is changed from a C area to a B area; the area A and the area B are separated through longitudinal plain concrete walls, the area B and the area C are separated through longitudinal arrayed SMW fender piles, the front side and the rear side of the area B are provided with the SMW fender piles which are transversely arrayed, and the top of a rectangular enclosure structure formed by the plain concrete walls on the left side of the area B, the SMW fender piles on the right side of the area B and the SMW fender piles on the front side and the rear side is provided with a crown beam. The construction method has the advantages of simple construction process, reasonable construction method conversion and simple structural system, effectively constructs a local station foundation pit enclosure system, realizes the safety of roof inverse building, permanent pipe culvert transfer and soil covering construction in the area, avoids secondary transfer and improvement and reduces the engineering investment.
Description
Technical Field
The invention belongs to the technical field of rail traffic engineering, and particularly relates to a construction method for a local roof inverse building structure of a subway station for moving and changing a gravity flow pipe culvert.
Background
The subway station construction is often accompanied by a large amount of pipeline migration and modification. Wherein, the gravity flow pipe (culvert) only depends on the self-inclined gradient gravity flow of the pipe body because of being a pressureless pipe (culvert). If the temporary transformation or the relocation transformation is carried out on the large-scale, a mechanical pump is often additionally arranged to assist the flow under pressure so as to overcome the elevation resistance, the station is relocated to the original position after the station is built, the construction period of a standard station is generally over 24 months, the relocation transformation cost is too high, and the mechanical pump can cause the backflow or overflow of the relocation pipe (culvert) due to mechanical failure in the construction period.
Disclosure of Invention
The invention aims to provide a construction method for a local roof inverse building structure of a subway station for moving and modifying a gravity flow pipe culvert, aiming at realizing near permanent moving and modifying of the gravity flow pipe culvert in a limited station range, effectively reducing the engineering investment, simplifying the construction process and improving the construction safety.
The technical scheme adopted by the invention is as follows:
the construction method of the local roof inverse building structure of the subway station for moving and changing the gravity flow pipe culvert specifically comprises the following steps:
the method comprises the following steps: constructing and setting out, and constructing a reinforced concrete continuous wall along the periphery of a station foundation pit;
step two: constructing a plain concrete wall along the boundary of the area A and the area B of the station foundation pit;
step three: constructing SMW fender posts at the front, the back and the right of a station foundation pit B area; after the SMW fender post is formed, a circle of crown beams are constructed on the top of the plain concrete wall and the top of the SMW fender post to form a closed ring, and the crown beams are provided with retaining walls;
step four: constructing a concrete support, a steel pipe support and a concrete pile at the lower part of the steel pipe support in a station foundation pit B area; then, excavating to 0.5m below the top plate, constructing a temporary concrete beam, and constructing a reverse construction local top plate on the temporary concrete beam; after the inverted local top plate reaches the design strength of 85%, the gravity flow pipe culvert is transferred to the position above the inverted local top plate of the area B from the area C of the station foundation pit and is covered with soil, and during the period, the concrete support and the crown beam are reserved and the excavation of the area B of the station foundation pit is stopped;
step five: excavating a station foundation pit C area to 0.5m below a top plate, chiseling a right part of a top beam, and pulling out a right SMW fender post;
step six: continuously excavating downwards from the position 0.5m of the elevation below the top plate of the area C of the station foundation pit to the elevation of the middle plate of the station in the area C, excavating from the area C to the area B from right to left, and timely applying internal steel supports after earthwork between the top plate of the area B and the middle plate is excavated;
step seven: step six is repeated, earthwork between the middle plates of the area C and the area B is excavated to the bottom plate and supported, and the bottom plate, the side walls and the middle plate structure of the station are worked up from bottom to top after excavation to the bottom;
step eight: and excavating the area A after the station structures in the area B and the area C are formed and constructing the station structures.
The subway station local roof inverse building structure for moving and modifying the gravity flow pipe culvert constructed according to the method is constructed in a rectangular station foundation pit, a circle of reinforced concrete continuous wall is constructed around the station foundation pit, the interior of the station foundation pit is divided into a left area, a middle area and a right area A, B, C, and the gravity flow pipe culvert is moved from the area C to the area B; the area A and the area B are separated by a longitudinal plain concrete wall, the area B and the area C are separated by SMW fender piles which are longitudinally arranged in a row, the front side and the rear side of the area B are provided with SMW fender piles which are transversely arranged in a row, the plain concrete wall on the left side of the area B, the SMW fender piles on the right side and the SMW fender piles on the front side and the rear side form a rectangular enclosure structure, and the top of the enclosure structure is provided with a closed crown beam;
the method comprises the following steps:
optimally, a plurality of rows of upright steel pipe supports are transversely arranged in the enclosing structure, and transverse temporary concrete beams are arranged at the tops of the steel pipe supports;
optimally, the bottom of the steel pipe support is provided with a concrete pile, and the bottom of the concrete pile extends into the position below a station bottom plate;
optimally, oblique concrete supports are arranged between the crown beams and are positioned above the top plate of the inverted construction part;
optimally, a plurality of layers of horizontal steel supports are arranged in the enclosing structure.
The invention has the following advantages:
the invention discloses a reverse construction structure, and relates to the technical field of simple construction procedures, reasonable construction method conversion and simple structure system. The method specifically comprises the following steps: the enclosure system of the foundation pit of the local station is effectively constructed, the top plate inverse building, the permanent pipe (culvert) moving and changing and the soil covering construction safety of the area are realized, the secondary moving and changing is avoided, and the engineering investment is reduced. Meanwhile, the inversely-built top plate under the steel pipe column jacking can provide cover plate protection for subsequent excavation and sequential building of the lower part of the station top plate.
Drawings
FIG. 1 is a schematic plan view of a local foundation pit support system of the present invention;
FIG. 2 is a schematic plan view of the local foundation pit internal bracing system of the present invention;
FIG. 3 is a schematic longitudinal sectional view of a partial foundation pit according to the present invention;
FIG. 4 is a schematic cross-sectional view of a partial inverted roof panel of the present invention;
in the figure: 1-enclosure system, 2-SMW enclosure piles, 3-plain concrete wall, 4-reinforced concrete continuous wall, 5-retaining wall, 6-crown beam, 7-concrete support, 8-temporary concrete beam, 9-steel pipe support, 10-gravity flow pipe culvert, 11-inverse construction local top plate, 12-concrete pile, 13-steel support, 14-station foundation pit A area, 15-station foundation pit B area, 16-station foundation pit C area, 17-ground, 18-middle plate, 19-bottom plate and 20-position before migration.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention relates to a construction method of a local top plate inverted structure of a subway station for moving and changing a gravity flow pipe culvert, wherein the local top plate inverted structure of the subway station for moving and changing the gravity flow pipe culvert constructed according to the method is constructed in a rectangular station foundation pit, a circle of reinforced concrete continuous wall 4 is constructed around the station foundation pit, the interior of the station foundation pit is divided into a left area, a middle area and a right area A, B, C, and a gravity flow pipe culvert 10 is changed from a C area to a B area; the area A is separated from the area B through a longitudinal plain concrete wall 3, the area B is separated from the area C through longitudinal arrayed SMW fender piles 2, the front side and the rear side of the area B are provided with the SMW fender piles 2 which are transversely arrayed, the plain concrete wall 3 on the left side of the area B, the SMW fender piles 2 on the right side of the area B and the SMW fender piles 2 on the front side and the rear side of the area B form a rectangular enclosure structure, and the top of the enclosure structure is provided with a closed crown beam 6.
And the area B is an early excavation area, after the area B is excavated to be 0.5m below the station roof, the station roof is constructed, and the gravity flow pipe culvert 10 is moved to the area B of the foundation pit from the area C of the foundation pit which is not excavated. The cross-sectional features of the gravity flow culvert 10 are not limited to circular or rectangular.
The enclosure structure is internally and transversely provided with a plurality of rows of upright steel pipe supports 9, and the tops of the steel pipe supports 9 are provided with transverse temporary concrete beams 8. The bottom of the steel pipe support 9 is provided with a concrete pile 12, and the bottom of the concrete pile 12 extends into the lower part of a station bottom plate 19 to support the dead weight of the temporary concrete beam 8 and the reverse roof.
An inclined concrete support 7 is arranged between the crown beams 6 and is positioned above the top plate 11 of the inverted construction part.
The right side SMW fender post 2 is used for keeping apart and waits to move and change gravity flow pipe culvert 10, ensures the pipeline safety of station foundation ditch B district excavation to roof elevation in-process. The front and rear SMW fender post 2 is used for transmitting and balancing the internal force of the concrete support 7, and the displacement and the trend of the whole fender system 1 in the horizontal direction are reduced. The plain concrete wall 3 is used for resisting the water and soil pressure of the left un-excavated area A of the station foundation pit so as to ensure the safety of the advanced excavation process of the area B of the station foundation pit;
and a plurality of layers of horizontal steel supports 13 are arranged in the enclosing structure.
The construction method for the local roof inverse building structure of the subway station for moving and changing the gravity flow pipe culvert comprises the following steps:
the method comprises the following steps: constructing and setting out, and constructing a reinforced concrete continuous wall 4 along the periphery of a station foundation pit;
step two: constructing a plain concrete wall 3 along the boundary of the area A and the area B of the station foundation pit;
step three: constructing SMW fender posts 2 at the front, the back and the right of a station foundation pit area B, wherein 850mmSMW posts are adopted, and 700 multiplied by 300 multiplied by 13 multiplied by 24 mmH-shaped steel is adopted;
after the SMW is formed, a circle of crown beams 6 are constructed at the tops of the plain concrete wall 3 and the SMW fender posts 2 to form a closed ring, retaining walls 5 are arranged on the crown beams 6, and thus, a station foundation pit B area is formed by enclosing;
step four: constructing a concrete support 7, a steel pipe support 9 and a lower foundation concrete pile 12 thereof in a station foundation pit B area; then, excavating to 0.5m below the top plate, constructing a temporary concrete beam 8, and inversely building a local top plate 11 on the temporary concrete beam; after the top plate 11 reaches the design strength of 85%, the gravity flow pipe culvert 10 is transferred to the position above the top plate 11 of the area B from the area C of the station foundation pit and is covered with soil, and during the period, the concrete support 7 and the crown beam 6 are reserved and the excavation of the area B of the station foundation pit is stopped;
step five: then excavating a station foundation pit C area to 0.5m below a top plate, chiseling a right part of a crown beam 6, and pulling out a right SMW fender post 2;
step six: continuously excavating downwards from the position 0.5m higher than the top plate of the area C of the station foundation pit to the height of the middle plate of the station in the area C, excavating from the area C to the area B from right to left, and timely constructing an internal steel support 13 after excavating earth between the top plate of the area B and the middle plate to ensure safety;
step seven: step six is repeated, earthwork between the middle plates of the area C and the area B is excavated to the bottom plate and supported, and the bottom plate, the side walls and the middle plate structure of the station are worked up from bottom to top after excavation to the bottom;
step eight: and excavating the area A after the station structures in the area B and the area C are formed and constructing the station structures.
According to the invention, a station foundation pit with a relocation influence range is enclosed by the SMW fender post, the plain concrete wall and the reinforced concrete continuous wall to form an independent space to be excavated, then the steel pipe columns are arranged in the station foundation pit and are used for jacking upper load, and local roof inverse building, permanent relocation of an upper pipe (culvert) and earthing are realized, so that secondary relocation is avoided. The enclosure system formed by enclosing can guarantee the safety in the excavation of the local foundation pit and the construction of the top plate by reverse construction, and meanwhile, the top plate by reverse construction can provide cover plate protection for the subsequent construction of the earthwork and the structure below the top plate by reverse construction. The whole reverse working process is simple, the construction method conversion is reasonable, the structure system is simple, and the method has popularization value.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (5)
1. The construction method of the local roof inverse building structure of the subway station for moving and changing the gravity flow pipe culvert is characterized by comprising the following steps of:
the subway station local roof inverted building structure for moving and changing the gravity flow pipe culvert constructed by the method is constructed in a rectangular station foundation pit, a circle of reinforced concrete continuous wall (4) is constructed around the station foundation pit, the interior of the station foundation pit is divided into A, B, C areas from left to right, and the gravity flow pipe culvert (10) is changed from a C area to a B area;
the area A and the area B are separated by a longitudinal plain concrete wall (3), the area B and the area C are separated by SMW fender piles (2) which are longitudinally arranged in a row, the front side and the rear side of the area B are provided with the SMW fender piles (2) which are transversely arranged in a row, the plain concrete wall (3) on the left side of the area B, the SMW fender piles (2) on the right side and the SMW fender piles (2) on the front side and the rear side form a rectangular enclosure structure, and the top of the enclosure structure is provided with a closed crown beam (6);
the method comprises the following steps:
the method comprises the following steps: constructing and setting out, and constructing a reinforced concrete continuous wall (4) along the periphery of a station foundation pit;
step two: constructing a plain concrete wall (3) along the boundary of the area A and the area B of the station foundation pit;
step three: constructing SMW fender posts (2) in the front, the back and the right of a station foundation pit B area;
after the SMW fender post (2) is formed, a circle of crown beam (6) is formed on the top of the plain concrete wall (3) and the top of the SMW fender post (2) to be sealed into a ring, and a retaining wall (5) is arranged on the crown beam (6);
step four: constructing a concrete support (7), a steel pipe support (9) and a concrete pile (12) at the lower part of the steel pipe support in a station foundation pit B area; then, excavating to 0.5m below the top plate, constructing a temporary concrete beam (8), and constructing a reverse construction local top plate (11) on the temporary concrete beam; after the reverse construction local top plate (11) reaches the design strength of 85%, the gravity flow pipe culvert (10) is moved to the position above the reverse construction local top plate (11) of the area B from the area C of the station foundation pit and is covered with soil, and during the period, the concrete support (7) and the crown beam (6) are reserved and the excavation of the area B of the station foundation pit is stopped;
step five: then, excavating a station foundation pit C area to 0.5m below a top plate, chiseling a right part of a crown beam (6), and pulling out a right SMW fender post (2);
step six: continuously excavating downwards from the position 0.5m higher than the top plate of the area C of the foundation pit of the station to the height of the middle plate of the station in the area C, excavating from the area C to the area B from right to left, and timely constructing an internal steel support (13) after earthwork between the top plate of the area B and the middle plate is excavated;
step seven: step six is repeated, earthwork between the middle plates of the area C and the area B is excavated to the bottom plate and supported, and the bottom plate, the side walls and the middle plate structure of the station are worked up from bottom to top after excavation to the bottom;
step eight: and excavating the area A after the station structures in the area B and the area C are formed and constructing the station structures.
2. The method for constructing the local top plate inverse building structure of the subway station for moving and changing the gravity flow pipe culvert according to claim 1, wherein the method comprises the following steps: a plurality of rows of upright steel pipe supports (9) are transversely arranged in the enclosing structure, and a transverse temporary concrete beam (8) is arranged at the top of each steel pipe support (9).
3. The method for constructing the local top plate inverse building structure of the subway station for moving and changing the gravity flow pipe culvert according to claim 2, wherein the method comprises the following steps: the concrete pile (12) is arranged at the bottom of the steel pipe support (9), and the bottom of the concrete pile (12) extends into the position below a station bottom plate (19).
4. The method for constructing the local top plate inverse building structure of the subway station for moving and changing the gravity flow pipe culvert according to claim 3, wherein the method comprises the following steps: an inclined concrete support (7) is arranged between the crown beams (6) and is positioned above the top plate (11) of the inverted construction part.
5. The method for constructing the local top plate inverse building structure of the subway station for moving and changing the gravity flow pipe culvert according to claim 4, wherein the method comprises the following steps: and a plurality of layers of horizontal steel supports (13) are arranged in the enclosing structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678986.3A CN111851578B (en) | 2020-07-15 | 2020-07-15 | Construction method for local roof inverse building structure of subway station for moving and changing gravity flow pipe culvert |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010678986.3A CN111851578B (en) | 2020-07-15 | 2020-07-15 | Construction method for local roof inverse building structure of subway station for moving and changing gravity flow pipe culvert |
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| CN111851578A CN111851578A (en) | 2020-10-30 |
| CN111851578B true CN111851578B (en) | 2021-12-07 |
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Citations (5)
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| CN108442382A (en) * | 2018-03-06 | 2018-08-24 | 中铁十局集团城市轨道工程有限公司 | It crosses the pressure line in-situ conservation of deep basal pit and goes along with sb. to guard him soil-baffling structure and construction method |
| CN209179010U (en) * | 2018-08-03 | 2019-07-30 | 中国电建集团华东勘测设计研究院有限公司 | A kind of municipal pipeline crosses the building enclosure of foundation pit |
| CN110258634A (en) * | 2019-06-28 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of subway station pipeline, which changes, moves device and method |
| CN110424454A (en) * | 2019-07-10 | 2019-11-08 | 中铁第四勘察设计院集团有限公司 | Build together method and the structure of building together of pipe gallery and subway station |
| CN210529712U (en) * | 2019-06-12 | 2020-05-15 | 中铁十一局集团城市轨道工程有限公司 | Construction structure for foundation pit crossing underground pipeline area |
-
2020
- 2020-07-15 CN CN202010678986.3A patent/CN111851578B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442382A (en) * | 2018-03-06 | 2018-08-24 | 中铁十局集团城市轨道工程有限公司 | It crosses the pressure line in-situ conservation of deep basal pit and goes along with sb. to guard him soil-baffling structure and construction method |
| CN209179010U (en) * | 2018-08-03 | 2019-07-30 | 中国电建集团华东勘测设计研究院有限公司 | A kind of municipal pipeline crosses the building enclosure of foundation pit |
| CN210529712U (en) * | 2019-06-12 | 2020-05-15 | 中铁十一局集团城市轨道工程有限公司 | Construction structure for foundation pit crossing underground pipeline area |
| CN110258634A (en) * | 2019-06-28 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of subway station pipeline, which changes, moves device and method |
| CN110424454A (en) * | 2019-07-10 | 2019-11-08 | 中铁第四勘察设计院集团有限公司 | Build together method and the structure of building together of pipe gallery and subway station |
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| CN111851578A (en) | 2020-10-30 |
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