CN110761593A - Elevated station platform layer structure and construction method thereof - Google Patents
Elevated station platform layer structure and construction method thereof Download PDFInfo
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- CN110761593A CN110761593A CN201910978201.1A CN201910978201A CN110761593A CN 110761593 A CN110761593 A CN 110761593A CN 201910978201 A CN201910978201 A CN 201910978201A CN 110761593 A CN110761593 A CN 110761593A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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Abstract
The invention provides an elevated vehicle station platform layer structure and a construction method thereof, and the elevated vehicle station platform layer structure comprises: the prefabricated beam columns, the prefabricated beams and the prefabricated plates are arranged on the beam column; the longitudinal beam directions of two adjacent precast beam columns are connected through a post-pouring belt to form a precast beam column group, and a plurality of precast beam column groups which are arranged in parallel are connected through a plurality of precast cross beams; the precast slabs are placed on the beam surfaces of the two adjacent groups of precast beam columns. By adopting the elevated station platform layer structure and the construction method thereof, the prefabricated members can be assembled on site without erecting templates, thereby greatly shortening the working hours and saving the manpower, and further reducing the construction cost.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to an elevated station platform layer structure and a construction method thereof.
Background
With the rapid development of cities, rail transit becomes the first choice vehicle for people to go out, and in order to meet the planning requirements of urban development, rail transit can usually adopt underground laying, ground laying, overhead laying and other forms. When the overhead line is laid, the station adopts an overhead station.
In the prior art, the elevated station platform layer is constructed by adopting a cast-in-place method, and the construction method has the following defects: 1. the standing platform layer is dense in column nets and more in beam plates, a formwork needs to be erected manually and then concrete is poured, working hours and manpower are consumed, construction levels of different constructors are different, construction quality is difficult to guarantee for a node area with dense reinforcing steel bars, and quality and appearance of cast-in-place concrete are difficult to guarantee; 2. the construction of enclosing the fender in a large range is carried out in the station range, and great influence is caused to ground traffic and peripheral production and life. Environmental problems such as noise, dust emission and the like during construction are also to be solved urgently; the method has the advantages that the support is erected on site, the template is installed, the steel bars are bound, the concrete is poured, the strength maintenance is carried out on the concrete, the template is removed, the labor hour and labor are greatly consumed, and the construction period is long. In the case of short construction period, the time for later decoration, equipment installation and system debugging needs to be shortened; 3. in the cast-in-place construction, a large number of full framing supports need to be erected, the risk of support collapse exists, and accidents in the prior art also occur frequently, so that the traditional high-risk design and construction method needs to be improved, and a safer, more efficient and more environment-friendly structural design and construction method is sought.
Disclosure of Invention
In order to overcome the technical defects, the invention provides a platform layer structure of an elevated station, which can greatly shorten the working hours and save the manpower, thereby reducing the construction cost.
In order to solve the problems, the invention is realized according to the following technical scheme:
an elevated station platform floor structure comprising: the prefabricated beam columns, the prefabricated beams and the prefabricated plates are arranged on the beam column;
the longitudinal beam directions of two adjacent precast beam columns are connected through a post-pouring belt to form a precast beam column group, and a plurality of precast beam column groups which are arranged in parallel are connected through a plurality of precast cross beams;
the precast slabs are placed on the beam surfaces of the two adjacent groups of precast beam columns.
As a further improvement of the present invention, the precast beam column includes: the prefabricated longitudinal beam and the prefabricated column are vertically connected to form a T-shaped prefabricated beam column structure.
As a further improvement of the invention, the precast beam column is penetrated with a pre-stressed pipeline along the transverse direction; the precast cross beam is embedded with the prestressed pipeline along the longitudinal direction.
As a further improvement of the invention, one side of the precast beam column is provided with a prestressed anchorage device which penetrates from one side of the precast beam column and is connected with the prestressed pipeline.
Compared with the prior art, the invention has the beneficial effects that: the prefabricated beam column, the prefabricated beam and the prefabricated plate are prefabricated in a factory in advance, the size and the appearance of the prefabricated member are standardized, the appearance of a station layer of the elevated station is guaranteed, the prefabricated member can be assembled on site without erecting a template, the working time is greatly shortened, the labor is saved, and the construction cost is reduced.
The invention also provides an assembling method of the station layer structure of the elevated station, which comprises the following steps:
supporting the column bottom of the precast beam column on the top layer of the rail-mounted area structure;
arranging post-cast strips in the longitudinal beam direction of the precast beam columns to enable a plurality of precast beam columns to form a precast beam column group;
a prefabricated cross beam is arranged between two adjacent groups of beam column groups, and two ends of the prefabricated cross beam are respectively connected with the beam column groups through mortar and prestress;
and placing precast slabs on the beam surfaces of two adjacent groups of precast beam column groups, and rigidly connecting the precast beam column groups with the precast slabs through a post-pouring layer.
As a further improvement of the invention, a prefabricated beam is arranged between two adjacent groups of beam column groups, and two ends of the prefabricated beam are respectively connected with the beam column groups through prestress, which comprises the following steps:
arranging a plurality of first temporary supports on the side wall of the precast beam column;
resting the precast beam on the first temporary support;
pre-stressed steel beams are penetrated into the pre-stressed pipelines reserved in the precast beam columns and the pre-stressed pipelines reserved in the precast cross beams;
pouring dry and hard mortar at the joint of the precast beam column and the precast beam;
and tensioning the prestressed steel bundles through a prestressed anchorage device which is arranged on the precast beam column in advance so as to connect the precast beam column and the precast beam through prestress.
As a further improvement of the present invention, after the prestressed steel strand is tensioned, the method further comprises the following steps:
grouting the prestressed pipeline, and sealing the prestressed anchorage device.
As a further improvement of the invention, the precast slab is laid on the beam surfaces of two adjacent groups of precast beam columns, and the method specifically comprises the following steps:
and arranging a second temporary support on the outer side of the precast beam column group in the longitudinal direction, wherein the part of the precast slab extending to the outer side of the precast beam column group is laid on the second temporary support.
As a further improvement of the invention, in the rigid connection of the precast beam column group and the precast slab through the post-cast layer, the method specifically comprises the following steps:
and binding longitudinal steel bars on the beam top of the precast beam column by using the precast beam column as a template, and pouring a post-pouring layer on the beam top.
Compared with the prior art, the invention has the beneficial effects that: the prefabricated beam column, the prefabricated beam and the prefabricated plate are prefabricated in a factory in advance, the size and the appearance of the prefabricated member are standardized, the appearance of a station layer of the elevated station is guaranteed, the prefabricated member can be assembled on site without erecting a template, the working time is greatly shortened, the labor is saved, and the construction cost is reduced.
Drawings
Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic cross-sectional view of an elevated station deck structure according to an embodiment;
FIG. 2 illustrates a set of precast girders and columns according to an example;
FIG. 3 is a schematic longitudinal connection diagram of an elevated station floor structure according to one embodiment;
FIG. 4 is another schematic view of the elevated station floor structure according to an embodiment
Fig. 5 is a flowchart of an assembly method of the elevated station floor structure according to the second embodiment.
Description of the labeling: 1-prefabricating a beam column; 101-prefabricating a longitudinal beam; 102-prefabricated columns; 2, prefabricating a beam column group; 3, prefabricating a cross beam; 4, precast slab; 41-a first prefabricated panel; 42-a second preformed sheet; 5-prestressed pipe; 6-prestressed anchorage device; 7-post-pouring a belt; 8-a first temporary support; 9-prestressed steel strands; 10-a second temporary support; 11-longitudinal steel bars; 12-post-pouring layer of beam top; 13-reinforcing steel bars; 14-dry hard mortar.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example one
The embodiment discloses an elevated station platform layer structure, as shown in fig. 1 and 4, including: a plurality of precast beam columns 1, a plurality of precast beams 3 and a plurality of precast slabs 4; the longitudinal beam directions of two adjacent precast beam columns 1 are connected through a post-pouring belt 7 to form a precast beam column group 2, and a plurality of groups of precast beam column groups 2 which are arranged in parallel are connected through a plurality of precast beams 3; precast slabs 4 are laid on the beam faces of two adjacent groups of precast beam columns 2.
In the above embodiment, as shown in fig. 2, the precast beam column 1 includes: the prefabricated longitudinal beam structure comprises prefabricated longitudinal beams 101 and prefabricated columns 102, the prefabricated longitudinal beams 101 are vertically connected with the prefabricated columns 102 to form a T-shaped prefabricated beam column structure, longitudinal reinforcing steel bars 13 are arranged in the prefabricated longitudinal beams 101, two adjacent prefabricated longitudinal beams 101 are connected through the reinforcing steel bars 13, the transverse distance of each prefabricated beam column 1 is set according to the width of a platform and generally does not exceed 6 meters, and the longitudinal distance is determined according to the arrangement condition of shaft meshes of the station and generally ranges from 5 meters to 8 meters.
The mode of prefabricating in a factory is adopted, so that the prefabricated longitudinal beam 101 and the prefabricated column 102 form the whole prefabricated beam column 1 quickly, the setting of a beam column core area is cancelled, the problems that reinforcing steel bars are dense in the core area, binding is difficult, and the post-cast concrete vibration quality is difficult to guarantee are solved, the problem is solved by arranging a post-cast strip in a span, and compared with the lagging method of constructing a column firstly and then constructing a beam plate in the traditional construction method, the construction speed is greatly improved.
In the above embodiment, as shown in fig. 3, the precast beam column 1 is penetrated with the pre-stressed pipeline 5 along the transverse direction; the prefabricated beam 3 is longitudinally penetrated with the pre-embedded prestressed pipeline 5, the pre-embedded prestressed pipeline 5 is pre-embedded in the prefabricated beam column 1 and the prefabricated beam 3 in advance during prefabrication, and the prestressed steel beam 9 is penetrated for tensioning after the components are assembled. The prestress assembly structure adopting dry connection can obviously improve the construction speed and reduce the influence of site construction on the environment.
In the above embodiment, a prestressed anchorage 6 is provided at one side of the precast beam-column, which penetrates from one side of the precast beam-column 1 and is connected with the prestressed pipe 5, and the prestressed steel bundle 9 is tensioned by the prestressed anchorage 6, and grouting and anchoring are performed.
Example two
The embodiment provides an assembling method of a platform layer structure of an elevated vehicle station, as shown in fig. 5, comprising the following steps:
and S1, supporting the column bottom of the precast beam column 1 on the top layer of the rail-bound region structure.
And S2, arranging a post-pouring belt 7 in the longitudinal beam direction of the precast beam columns 1, and enabling the precast beam columns 1 to form a precast beam column group 2.
S3, a prefabricated beam 3 is arranged between two adjacent beam column groups 2, and two ends of the prefabricated beam 3 are connected with the beam column groups 2 through mortar and prestress respectively to form a frame system quickly.
And S4, placing the precast slabs 4 on the beam surfaces of two adjacent groups of precast beam-column groups 2, and rigidly connecting the precast beam-column groups 2 with the precast slabs 4 through the post-pouring layer 7.
In the above embodiment, the two ends of the precast beam 3 are respectively connected to the beam column group 2 through mortar and prestress, and the method specifically includes the following steps:
a plurality of first temporary supports 10 are arranged on the side wall of the precast beam column 1.
The precast girders 3 rest on first temporary supports 10.
And prestressed steel bundles 9 are penetrated into the prestressed pipelines 5 reserved in the precast beam columns 1 and the prestressed pipelines 5 reserved in the precast beams 3.
And pouring dry and hard mortar 14 at the joint of the precast beam column 1 and the precast beam 3.
And tensioning the prestressed steel bundles 9 through a prestressed anchorage device 6 which is arranged on the precast beam column 1 in advance so as to connect the precast beam column 1 and the precast cross beam 3 through prestress.
In the above embodiment, after the prestressed steel strand is tensioned, the method further includes the following steps:
grouting the prestressed pipeline 5, and sealing the prestressed anchor 6.
In the above embodiment, the step of placing the precast slabs 4 on the beam surfaces of two adjacent groups of precast beam columns 2 specifically includes the following steps:
on the outer side of the precast beam column group 2 in the longitudinal direction, a second temporary support 10 is provided, and the part of the precast slab 4 extending to the outer side of the precast beam column group 2 rests on the second temporary support 10, in this embodiment, the precast slab 4 includes a first precast slab 41 and a second precast slab 42, the first precast slab 41 can directly rest on the precast beam column group 2, and the second precast slab 42 needs to be supported by the second temporary support 10 as it extends to the outside of the precast beam column group 2, and the construction period is considered as a one-way simple support.
In the above embodiment, in rigidly connecting the precast beam column group and the precast slab 4 through the post-cast layer, the following steps are specifically included:
and (3) binding longitudinal steel bars 11 on the beam top of the precast beam column 1 by using the precast beam column 1 as a template, and pouring a post-cast layer 12 on the beam top. After the construction of the beam top post-cast layer 12 is completed, the components can be flexibly arranged along the length direction of the station according to the consideration of the unidirectional continuous plates (the installation sequence of the components can be flexibly arranged, the prefabricated plates are constructed after all frames in the range of the station are constructed), and when the assembly is carried out on site, the prefabricated components can be firstly hoisted in place according to the traditional method without arranging additional midspan supports. The method is convenient for construction, reduces the field operation amount and can shorten the construction period.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. An elevated station platform layer structure, comprising: the prefabricated beam columns, the prefabricated beams and the prefabricated plates are arranged on the beam column;
the longitudinal beam directions of two adjacent precast beam columns are connected through a post-pouring belt to form a precast beam column group, and a plurality of precast beam column groups which are arranged in parallel are connected through a plurality of precast cross beams;
the precast slabs are placed on the beam surfaces of the two adjacent groups of precast beam columns.
2. The elevated station floor structure of claim 1 wherein the precast beam column comprises: the prefabricated longitudinal beam and the prefabricated column are vertically connected to form a T-shaped prefabricated beam column structure.
3. The elevated station platform floor structure of claim 1 wherein the precast beam column is embedded with a prestressed pipe running transversely therethrough; the precast cross beam is embedded with the prestressed pipeline along the longitudinal direction.
4. The elevated station platform floor structure according to claim 4, wherein a pre-stressed anchor is provided at one side of the precast beam column, which penetrates from one side of the precast beam column and is connected with the pre-stressed pipe.
5. An elevated station platform layer structure assembling method is characterized by comprising the following steps:
supporting the column bottom of the precast beam column on the top layer of the rail-mounted area structure;
arranging post-cast strips in the longitudinal beam direction of the precast beam columns to enable a plurality of precast beam columns to form a precast beam column group;
a prefabricated cross beam is arranged between two adjacent groups of beam column groups, and two ends of the prefabricated cross beam are respectively connected with the beam column groups through mortar and prestress;
and placing precast slabs on the beam surfaces of two adjacent groups of precast beam column groups, and rigidly connecting the precast beam column groups with the precast slabs through a post-pouring layer.
6. The method for assembling the elevated station platform layer structure according to claim 5, wherein a prefabricated cross beam is arranged between two adjacent beam column groups, and two ends of the prefabricated cross beam are respectively connected with the beam column groups through prestress, comprising the following steps:
arranging a plurality of first temporary supports on the side wall of the precast beam column;
resting the precast beam on the first temporary support;
pre-stressed steel beams are penetrated into the pre-stressed pipelines reserved in the precast beam columns and the pre-stressed pipelines reserved in the precast cross beams;
pouring dry and hard mortar at the joint of the precast beam column and the precast beam;
and tensioning the prestressed steel bundles through a prestressed anchorage device which is arranged on the precast beam column in advance so as to connect the precast beam column and the precast beam through prestress.
7. The method of assembling an elevated station floor structure of claim 6 further comprising the step of, after tensioning the prestressed steel strands:
grouting the prestressed pipeline, and sealing the prestressed anchorage device.
8. The method for assembling the elevated station platform floor structure according to claim 5, wherein the step of placing precast slabs on the beam surfaces of two adjacent sets of precast beam columns comprises the following steps:
and arranging a second temporary support on the outer side of the precast beam column group in the longitudinal direction, wherein the part of the precast slab extending to the outer side of the precast beam column group is laid on the second temporary support.
9. The method for assembling the elevated station platform layer structure according to claim 5, wherein the step of rigidly connecting the precast beam column group and the precast slab through a post-cast layer comprises the following steps:
and binding longitudinal steel bars on the beam top of the precast beam column by using the precast beam column as a template, and pouring a post-pouring layer on the beam top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910978201.1A CN110761593A (en) | 2019-10-15 | 2019-10-15 | Elevated station platform layer structure and construction method thereof |
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| CN201910978201.1A CN110761593A (en) | 2019-10-15 | 2019-10-15 | Elevated station platform layer structure and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676848A (en) * | 2020-06-15 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Fully prefabricated assembled platform structure for subway station |
| CN112100716A (en) * | 2020-08-20 | 2020-12-18 | 广州地铁设计研究院股份有限公司 | Design method of T-shaped transfer station column net |
| CN113863174A (en) * | 2021-09-09 | 2021-12-31 | 中铁第四勘察设计院集团有限公司 | Ground platform structure and construction method thereof |
| CN115262637A (en) * | 2022-09-27 | 2022-11-01 | 中建六局(天津)绿色建筑科技有限公司 | Subway station platform board assembled structure system |
-
2019
- 2019-10-15 CN CN201910978201.1A patent/CN110761593A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676848A (en) * | 2020-06-15 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Fully prefabricated assembled platform structure for subway station |
| CN112100716A (en) * | 2020-08-20 | 2020-12-18 | 广州地铁设计研究院股份有限公司 | Design method of T-shaped transfer station column net |
| CN112100716B (en) * | 2020-08-20 | 2024-02-23 | 广州地铁设计研究院股份有限公司 | Design method of T-shaped transfer station column net |
| CN113863174A (en) * | 2021-09-09 | 2021-12-31 | 中铁第四勘察设计院集团有限公司 | Ground platform structure and construction method thereof |
| CN115262637A (en) * | 2022-09-27 | 2022-11-01 | 中建六局(天津)绿色建筑科技有限公司 | Subway station platform board assembled structure system |
| CN115262637B (en) * | 2022-09-27 | 2022-12-30 | 中建六局(天津)绿色建筑科技有限公司 | Subway station platform board assembled structure system |
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