CN111827348A - Construction method of subway support beam - Google Patents
Construction method of subway support beam Download PDFInfo
- Publication number
- CN111827348A CN111827348A CN202010607442.8A CN202010607442A CN111827348A CN 111827348 A CN111827348 A CN 111827348A CN 202010607442 A CN202010607442 A CN 202010607442A CN 111827348 A CN111827348 A CN 111827348A
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- reinforcement cage
- prefabricated
- construction method
- scaffold
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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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a construction method of a subway support beam, which comprises the following steps: manufacturing a plurality of prefabricated supporting devices; building a scaffold between two adjacent continuous walls so that the top ends of the scaffold and the top ends of the continuous walls are flush with each other; the top of each continuous wall is provided with a crown beam reinforcement cage, and the middle of the scaffold is provided with a middle longitudinal beam reinforcement cage; the prefabricated supporting device is hoisted between the middle longitudinal beam steel reinforcement cage and each crown beam steel reinforcement cage; supporting templates around the crown beam reinforcement cage and around a gap between the crown beam reinforcement cage and the prefabricated support device; and pouring concrete so that the concrete covers the crown beam reinforcement cage and the middle longitudinal beam reinforcement cage. In the construction process, the supporting beam structure can be built more quickly by the method, and compared with a cast-in-place construction method, more construction procedures and labor cost can be saved, and the construction progress is greatly accelerated.
Description
Technical Field
The invention is used in the field of subway construction, and particularly relates to a construction method of a subway support beam.
Background
The subway supporting beam is generally arranged above the diaphragm wall and located between the crown beams, the construction mode of the subway supporting beam is generally carried out in a cast-in-place mode in the subway construction process at the present stage, a large amount of manpower and material resources are needed to be matched in the cast-in-place construction process, however, the construction cannot be carried out simultaneously in a large amount due to the influence of a working face on the site, the site is occupied, the construction progress is slowed, and the manpower cost is high.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a construction method of a subway support beam, which can reduce construction processes, greatly accelerate construction progress and save manpower.
The technical scheme adopted by the invention for solving the technical problems is as follows: a construction method of a subway support beam comprises the following steps
Manufacturing a plurality of prefabricated supporting devices;
building a scaffold between two adjacent continuous walls so that the top ends of the scaffold and the top ends of the continuous walls are flush with each other;
the top of each continuous wall is provided with a crown beam reinforcement cage, and the middle of the scaffold is provided with a middle longitudinal beam reinforcement cage;
the prefabricated supporting device is hoisted between the middle longitudinal beam steel reinforcement cage and each crown beam steel reinforcement cage;
supporting templates around the crown beam reinforcement cage and around a gap between the crown beam reinforcement cage and the prefabricated support device;
and pouring concrete so that the concrete covers the crown beam reinforcement cage and the middle longitudinal beam reinforcement cage.
Preferably, before the scaffold is built, the foundation between two adjacent continuous walls is poured with concrete to form a cushion structure.
Preferably, when the prefabricated supporting device is manufactured, key groove structures with rough surfaces are arranged at two ends of the prefabricated supporting device along the length direction of the prefabricated supporting device.
Preferably, when the prefabricated supporting device is manufactured, overhanging reinforcing steel bars are reserved at two ends of the prefabricated supporting device along the length direction of the prefabricated supporting device, and connectors are installed at the ends of the overhanging reinforcing steel bars.
Preferably, the overhanging reinforcing steel bars close to one side of the crown beam reinforcing steel bar cage are continuously connected and extended and stretch into the crown beam reinforcing steel bar cage.
Preferably, between two adjacent prefabricated support devices, the overhanging reinforcing steel bars arranged above each prefabricated support device are continuously connected and extended through the connectors and penetrate through the reinforcing cages of the middle longitudinal beams to be welded with each other.
Preferably, between two adjacent prefabricated support devices, the overhanging reinforcing steel bars located below the prefabricated support devices are continuously connected and extended through the connectors and pass through the bottoms of the middle longitudinal beam reinforcing cages to be anchored with each other.
Preferably, the overhanging steel bars arranged above each prefabricated supporting device are welded on both sides with the diameter 5 times of that of the overhanging steel bars.
Preferably, the built scaffold adopts a coil buckle type scaffold.
Preferably, the side of the crown beam reinforcement cage is provided with a retaining wall, and the retaining wall is provided with expansion bolts for tensioning the templates arranged around the crown beam reinforcement cage.
One of the above technical solutions has at least one of the following advantages or beneficial effects: in the work progress, make a plurality of prefabricated strutting arrangement, build the scaffold frame between two adjacent continuous walls, all set up the hat roof beam steel reinforcement cage at the top of each continuous wall, the scaffold frame middle part sets up the well longeron steel reinforcement cage, hoist prefabricated strutting arrangement between well longeron steel reinforcement cage and each hat roof beam steel reinforcement cage, the formwork board around the hat roof beam steel reinforcement cage and around the clearance between hat roof beam steel reinforcement cage and the prefabricated strutting arrangement, concreting, so that the concrete covers hat roof beam steel reinforcement cage and well longeron steel reinforcement cage and forms a supporting beam, through this method can be more swift construct a supporting beam structure, compare cast-in-place's construction method, can save more construction process and human cost, accelerate the construction progress greatly.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural view of the embodiment of FIG. 1 without cast concrete;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
fig. 5 is a cross-sectional view at C-C in the embodiment of fig. 1.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Referring to fig. 1 and 2, an embodiment of the present invention provides a construction method of a subway support beam, including the following steps: manufacturing a plurality of prefabricated supporting devices 1, building a scaffold 3 between two adjacent continuous walls 2, enabling the top end of the built scaffold 3 to be flush with the top ends of the continuous walls 2, arranging a crown beam reinforcement cage 4 at the top of each continuous wall 2, arranging a middle longitudinal beam reinforcement cage 5 in the middle of the scaffold 3, hoisting the prefabricated supporting devices 1 between the middle longitudinal beam reinforcement cage 5 and each crown beam reinforcement cage 4, wherein the arrangement direction of the prefabricated supporting devices 1 is vertical to the arrangement direction of the middle longitudinal beam reinforcement cage 5, erecting formwork around the crown beam reinforcement cage 4 and the gap between the crown beam reinforcement cage 4 and the prefabricated supporting devices 1, pouring concrete to enable the concrete to cover the crown beam reinforcement cage 4 and the middle longitudinal beam reinforcement cage 5, specifically, firstly pouring concrete into the crown beam reinforcement cage 4 to form a crown beam, and then pouring concrete into the gap between the crown beam and the prefabricated supporting devices 1, so that the crown beam is connected with the prefabricated supporting devices 1, concrete is poured between the two adjacent prefabricated supporting devices 1, so that the two prefabricated supporting devices 1 are connected with each other and cover the longitudinal beam reinforcement cage 5, the supporting beam can be built more quickly by the method, compared with a cast-in-place construction method, more construction procedures and labor cost can be saved, and the construction progress is greatly accelerated.
Referring to fig. 2 and 5, in some embodiments, before the scaffold 3 is built, a cushion structure 6 is formed on the foundation poured concrete between two adjacent continuous walls 2, so that the situation that the built scaffold 3 collapses due to too loose foundation and construction is affected is avoided, and the built scaffold 3 can adopt a coil-buckled scaffold 3 and other structures.
In some embodiments, when the prefabricated supporting device 1 is manufactured, key groove structures with rough surfaces are arranged at two ends of the prefabricated supporting device 1 along the length direction of the prefabricated supporting device 1, and when a gap between the prefabricated supporting device 1 and the crown beam reinforcement cage 4 is poured, the connection performance between cast-in-place concrete and the prefabricated supporting device 1 can be improved.
Referring to fig. 2 and 3, in some embodiments, when the prefabricated supporting device 1 is manufactured, overhanging steel bars 41 are reserved on two sides of the prefabricated supporting device 1 along the length direction of the prefabricated supporting device 1, and connectors 42 are installed at the ends of the overhanging steel bars 41, specifically, when the prefabricated supporting device 1 is manufactured, a part of the steel bars of the prefabricated supporting device 1 is reserved, so that after the prefabricated supporting device 1 is manufactured, overhanging steel bars 41 with overhanging end faces are arranged at two ends of the prefabricated supporting device 1 along the length direction of the prefabricated supporting device 1, threaded wires are turned on the overhanging steel bars 41, the connectors 42 are installed on the overhanging steel bars 41 through the threaded wires, and the connectors 42 are used for continuing to connect the steel bars on the basis of the overhanging steel bars 41, so that the overhanging steel bars 41 are lengthened.
Referring to fig. 2 and 4, specifically, when the overhanging reinforcement 41 needs to be connected with the crown beam reinforcement cage 4, the overhanging reinforcement 41 near one side of the crown beam reinforcement cage 4 is continuously connected and extended through the connector 42, so that the continuously connected and extended reinforcement extends into the crown beam reinforcement, thereby realizing the connection between the prefabricated support device 1 and the crown beam reinforcement cage 4, and effectively improving the connection performance between the prefabricated support device 1 and the crown beam reinforcement cage 4.
Referring to fig. 2 and 4, for the external reinforcing steel bars 41 on both sides of the middle longitudinal beam reinforcing cage 5, the external reinforcing steel bars 41 arranged above the prefabricated supporting devices 1 are continuously extended and penetrate through the middle longitudinal beam reinforcing cage 5 through the connectors 42 and are welded with each other, specifically, the external reinforcing steel bars 41 arranged above the prefabricated supporting devices 1 are continuously extended and connected with each other through the connectors 42, wherein a part of the external reinforcing steel bars 41 are continuously connected with longer reinforcing steel bars and extend to penetrate through the middle longitudinal beam reinforcing cage 5, and a part of the external reinforcing steel bars 41 are continuously connected with shorter reinforcing steel bars and cannot extend into the middle longitudinal beam reinforcing cage 5, wherein the longer continuous reinforcing steel bars above one prefabricated supporting device 1 and the shorter continuous reinforcing steel bars above the other prefabricated supporting device 1 are welded with each other to form a staggered connection form, so that the connection performance between the two prefabricated supporting devices 1 is improved.
For the overhanging steel bars 41 on two sides of the middle longitudinal beam steel reinforcement cage 5, the overhanging steel bars 41 arranged below the prefabricated support devices 1 are continuously connected and extended through the connectors 42 and pass through the middle longitudinal beam steel reinforcement cage 5 to be anchored with each other, so that the connection performance between the two prefabricated support devices 1 is further improved.
In some embodiments, the overhanging steel bars 41 arranged above the prefabricated support device 1 are welded on both sides with a diameter 5 times larger than that of the overhanging steel bars 41, so as to ensure the firm connection between the overhanging steel bars 41.
Referring to fig. 2, one side of the crown beam reinforcement cage 4 is tightly attached to the retaining wall, the retaining wall is provided with expansion bolts 71, and the expansion bolts 71 are used for tensioning the template on one side of the crown beam reinforcement cage 4, so that the crown beam can bear larger concrete load when being poured.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. A construction method of a subway support beam is characterized in that: the method comprises the following steps of manufacturing a plurality of prefabricated supporting devices (1);
building a scaffold (3) between two adjacent continuous walls (2) so that the top ends of the scaffold (3) and the top ends of the continuous walls (2) are flush with each other;
the top of each continuous wall (2) is provided with a crown beam reinforcement cage (4), and the middle of the scaffold (3) is provided with a middle longitudinal beam reinforcement cage (5);
the prefabricated supporting device (1) is hoisted between the middle longitudinal beam reinforcement cage (5) and each crown beam reinforcement cage (4);
supporting a formwork around the crown beam reinforcement cage (4) and around a gap between the crown beam reinforcement cage (4) and the prefabricated support device (1);
and pouring concrete so that the concrete covers the crown beam reinforcement cage (4) and the middle longitudinal beam reinforcement cage (5).
2. A construction method of a subway support beam as claimed in claim 1, wherein: before the scaffold (3) is built, concrete is poured on the foundation between every two adjacent continuous walls (2) to form a cushion layer structure (6).
3. A construction method of a subway support beam as claimed in claim 1, wherein: when the prefabricated supporting device (1) is manufactured, key groove structures with rough surfaces are arranged at two ends of the prefabricated supporting device (1) along the length direction of the prefabricated supporting device (1).
4. A construction method of a subway support beam as claimed in claim 1, wherein: when the prefabricated supporting device (1) is manufactured, overhanging reinforcing steel bars (41) are reserved at two ends of the prefabricated supporting device (1) along the length direction of the prefabricated supporting device (1), and connectors (42) are installed at the ends of the overhanging reinforcing steel bars (41).
5. A construction method of a subway support beam as claimed in claim 4, wherein: the overhanging reinforcing steel bars (41) close to one side of the crown beam reinforcing steel bar cage (4) are continuously connected and extended and extend into the crown beam reinforcing steel bar cage (4).
6. A construction method of a subway support beam as claimed in claim 4, wherein: between two adjacent prefabricated support devices (1), the overhanging reinforcing steel bars (41) arranged above the prefabricated support devices (1) are continuously connected, extended and penetrate through the middle longitudinal beam reinforcing cage (5) through the connectors (42) and then are welded with each other.
7. A construction method of a subway support beam as claimed in claim 6, wherein: between two adjacent prefabricated support devices (1), the overhanging reinforcing steel bars (41) positioned below the prefabricated support devices (1) are continuously connected, extended and anchored with each other through the bottoms of the middle longitudinal beam reinforcing cages (5) through the connectors (42).
8. A construction method of a subway support beam as claimed in claim 6, wherein: and performing double-sided welding between the overhanging reinforcing steel bars (41) arranged above the prefabricated supporting devices (1) by 5 times of the diameter of the overhanging reinforcing steel bars (41).
9. A construction method of a subway support beam as claimed in claim 1, wherein: the built scaffold (3) adopts a coil buckle type scaffold.
10. A construction method of a subway support beam as claimed in claim 1, wherein: the side of the crown beam reinforcement cage (4) is provided with a retaining wall (7), and the retaining wall (7) is provided with an expansion bolt (71) for tensioning a template arranged around the crown beam reinforcement cage (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607442.8A CN111827348A (en) | 2020-06-29 | 2020-06-29 | Construction method of subway support beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010607442.8A CN111827348A (en) | 2020-06-29 | 2020-06-29 | Construction method of subway support beam |
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| Publication Number | Publication Date |
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| CN111827348A true CN111827348A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010607442.8A Pending CN111827348A (en) | 2020-06-29 | 2020-06-29 | Construction method of subway support beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753406A (en) * | 2022-03-11 | 2022-07-15 | 中建八局轨道交通建设有限公司 | Reinforced structure for mounting platform plate of half-height safety door and construction method thereof |
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| CN110106919A (en) * | 2019-05-28 | 2019-08-09 | 成都市建筑设计研究院 | A kind of lid digs the building enclosure and its construction method at station |
| CN210658442U (en) * | 2019-07-10 | 2020-06-02 | 中铁第四勘察设计院集团有限公司 | Roof plate upturning beam structure of subway station |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926669A (en) * | 2016-04-29 | 2016-09-07 | 广州地铁设计研究院有限公司 | Construction method of subway station |
| CN106223360A (en) * | 2016-07-07 | 2016-12-14 | 中铁六局集团有限公司 | Use the open cut cast in place and precast construction subway station construction method of stake supporting system |
| CN106168035A (en) * | 2016-08-17 | 2016-11-30 | 广州地铁设计研究院有限公司 | The subassembly formula construction method of subassembly formula underground structure and underground structure |
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| CN107806101A (en) * | 2017-10-30 | 2018-03-16 | 上海市城市建设设计研究总院（集团）有限公司 | Construction method of the bar shaped foundation ditch cast-in-place concrete to the prefabricated linking beam of support |
| CN109235499A (en) * | 2018-07-20 | 2019-01-18 | 广州地铁设计研究院股份有限公司 | A kind of open cut hypogee Standard formula construction method |
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| CN114753406A (en) * | 2022-03-11 | 2022-07-15 | 中建八局轨道交通建设有限公司 | Reinforced structure for mounting platform plate of half-height safety door and construction method thereof |
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Application publication date: 20201027 |
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