CN110042927B - Assembled concrete structure, subway ground entrance and exit structure and construction method thereof - Google Patents
Assembled concrete structure, subway ground entrance and exit structure and construction method thereof Download PDFInfo
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- CN110042927B CN110042927B CN201910419113.8A CN201910419113A CN110042927B CN 110042927 B CN110042927 B CN 110042927B CN 201910419113 A CN201910419113 A CN 201910419113A CN 110042927 B CN110042927 B CN 110042927B
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000004567 concrete Substances 0.000 title claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 abstract description 30
- 239000010959 steel Substances 0.000 abstract description 30
- 238000012423 maintenance Methods 0.000 abstract description 12
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- 230000002045 lasting effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34321—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by panels
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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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34326—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by longitudinal elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The application discloses an assembled concrete structure, a subway ground entrance and exit structure and a construction method thereof, and solves the problems that a cast-in-place concrete frame structure adopted by the existing subway ground entrance and exit has long construction period, severe construction environment and high later maintenance cost of a steel structure. The application comprises a plurality of prefabricated components: the beam body frame is formed at the top, and the independent beams and the T-shaped plates are assembled to form a top structure and are in dry connection with the beam body frame. The application has the advantages of advanced prefabrication, quick field assembly, stable structure, good construction environment, low later maintenance cost and the like.
Description
Technical Field
The application relates to the technical field of subway construction, in particular to an assembled concrete structure, a subway ground entrance and exit structure and a construction method thereof.
Background
The subway is used as a high-efficiency, rapid and large-capacity public transportation mode, is an effective means for relieving urban traffic pressure and shaping novel urban living facilities, and more cities start to construct the rail traffic mainly based on the scale of urban population and economic scale. The rail vehicles pass through underground, so that a large amount of people flow is transported, and occupation and fracture of urban ground space are avoided.
The subway ground entrance and exit becomes a connection point for connecting the track space and the urban space. From the viewpoint of subway auxiliary facilities, the functional requirements are simple and clear: constructing a semi-outdoor environment, and accommodating facilities such as stairs, escalators and the like necessary for subways; a clear management boundary needs to be provided for subway facilities; corresponding to the high loss rate caused by daily large passenger flows, it is required to be sturdy and durable. As urban street facilities, the requirements for the urban street facilities are quick construction and quick construction, and the problems of too long time and too large range interference on the existing traffic and environment of the street are avoided.
The Beijing subway is the earliest subway built in China, the earliest subway entrance adopts a cast-in-place concrete frame structure which is the same as the common civil building at the time, filling walls, metal guard rails, glass windows and the like are built between frames, and the exterior facing is paint or wet-pasted stone. The construction mode is limited by the inherent curing time of cast-in-place concrete, and long site construction time is often required; a large amount of field wet operation can cause more dust, water environment pollution and waste problems, and the construction effect is also lack of more effective control. Along with the development of economy, the available construction cost of subway access & exit improves, and the subway ground access & exit is more to adopt the swift steel construction curtain system of field installation at present, uses steel as the beam column bearing system of main material to be matched with curtain outer envelope such as glass, metal, stone material. The steel structural member can be processed in a factory in advance, so that the field wet operation is reduced, the field construction time is short, and the cost is higher compared with that of the original reinforced concrete structure.
The steel structure is one of the common structural modes of the civil building at present, and has good structural performance, light weight, high strength and good earthquake resistance. The large-span building and the super high-rise building mostly adopt the structural form, and the performance advantage of the steel structure can be fully exerted. However, the maintenance requirements of the steel structure are high, especially in outdoor and semi-outdoor environments. The maintenance of the steel structure mainly comprises the following two aspects: regular rust and corrosion protection and regular fire protection treatment protection. The steel structure design specification has certain requirements on corrosion resistance of the steel structure. In the subway design Specification, the fire-resistant grade requirement for subway ground entrances and exits is two-level. In the building design fire-proof standard, certain fire-proof time requirements are required for the middle column and the beam of the building with the fire-proof grade second level. The corrosion and fire protection treatment of the steel structure is mainly based on a nonmetallic coating protection method at present, and the durability of the coating greatly influences the durability of the steel structure. Because subway ground access & exit belongs to the open environment of semi-outdoor, the coating is more easily destroyed because of wind blows, sun shines, drenches, freeze thawing. The high-quality fluorocarbon finish paint with better performance is generally accepted at present, and the lasting time is generally about twenty years. Considering the respective endurance time of the anti-corrosion primer, the intermediate paint and the fireproof paint comprehensively and the artificial abrasion caused by large traffic of the subway, the endurance time of the steel structure protective layer of the subway ground entrance is often shorter, the problem that the protective layer cracks and falls off after five or six years of use of a plurality of components is solved, and the anti-corrosion and fireproof treatment is required to be carried out again, so that the maintenance cost of the urban infrastructure of the subway can be increased undoubtedly.
Therefore, in the subway ground entrance and exit with small volume, small span, semi-outdoor opening and high people flow contact, the structural form of the steel structure is adopted, the performance advantage of the steel structure can not be fully exerted, and the problem of high later maintenance cost exists.
Disclosure of Invention
The technical problems to be solved by the application are as follows: the cast-in-place concrete frame structure adopted by the existing subway ground entrance and exit structure has long construction period, severe construction environment and high later maintenance cost of the steel structure.
The application provides an assembled concrete structure, a subway ground entrance and exit structure and a construction method thereof, which solve the problems.
The application is realized by the following technical scheme:
the assembled concrete structure comprises a plurality of prefabricated components, wherein each prefabricated component comprises an end beam column, a side beam column and a separate column, each end beam column comprises two corner columns and an end beam integrally cast with the corner column, each end beam comprises a cross beam and two extending beams perpendicular to the cross beam and the corner columns, each side beam column comprises a side column and side beams integrally cast with the side column and extending towards two ends, the two extending beams are respectively connected with side portions Liang Ganshi of two sides and are connected with adjacent side beams in a head-tail dry mode to form a beam body frame, and the joint of each side beam and each extending beam is provided with the separate column as a support.
The application breaks the whole frame into a plurality of prefabricated components from the convenience of construction and the cost of later maintenance and comprehensively considers the stability of the structure, each prefabricated component is connected in a dry mode, in order to realize the stable connection of beams and columns, an end beam column and a side beam column in the prefabricated components prefabricate a column bearing the stress of a main body into a whole with the beams, and for the end beam column, the end beam is arranged to be connected with the side beam in an extending mode for avoiding the instability caused by the connection of the end beam and the side beam at a corner column, and for the dry connection of the adjacent end beam, the end beam also extends towards two ends, namely the dry connection point of the side beam avoids the side column, and a single column is arranged at the connection position of the end of the adjacent side beam for supporting and reinforcing, so that the whole stressed frame is stable, and the severe construction environment and the complexity of operation caused by wet connection are avoided.
Further, the side beam column comprises a plurality of side uprights and side beams positioned on the side uprights, and the side beams extend out of the side uprights.
Further, the side beam column comprises 3 side columns, wherein the side columns are middle side columns and side columns at two ends and are distributed at equal intervals.
The prefabricated part further comprises a plurality of T-shaped plates and independent beams, wherein the T-shaped plates are spliced and connected to the beam body frame in a dry mode, and the independent beams are connected to the beam body frame in a dry mode along the direction perpendicular to the side beam columns and are positioned at the spliced positions of the adjacent T-shaped plates. As the top structure of main part frame, in order to realize prefabricated scene assembly in advance, set up T template into a plurality ofly, and assemble on the roof beam body frame, in order to improve the stability of the horizontal and the vertical atress of top structure, install independent roof beam additional on the roof beam body frame and consolidate, and be located the concatenation department of adjacent T template, all play the effect of consolidating to the connection of T template and with the connection of roof beam body frame.
Further, L-shaped notches are formed at two ends of the independent beam, so that the independent beam is conveniently and firmly connected with the beam body frame in a lap joint mode through the notches.
The independent beams are located right above the independent columns and part of the side columns.
For a side beam column with three side columns, the independent beam is located directly above the independent column and the middle side column.
According to the preferred fabricated concrete structure, the T-shaped plate comprises a flat plate and ribs positioned below the flat plate, the ribs are in dry connection with the beam body frame, and L-shaped notches are formed at two ends of the ribs, so that the T-shaped plate can be conveniently lapped on the beam body frame through the notches and in dry connection.
The rib is located at a widthwise midline of the flat plate.
The ribs are located directly above the corner posts and the other portion of the side posts.
For a side beam column with three side columns, the ribs are located right above the corner columns and the side columns at the two ends.
The cylinder is the main part of tolerance, with T template, independent roof beam with the dry-type tie point of roof beam body frame all sets up directly over the cylinder, can further guarantee top structure and sub-structure's wholeness and steadiness.
The subway ground entrance and exit structure comprises the assembled concrete structure.
The application breaks the whole frame of the subway ground entrance and exit into a plurality of prefabricated components from the convenience of construction and the cost of later maintenance and comprehensively considers the stability of the structure, each prefabricated component is connected in a dry mode, in order to realize the stable connection of the beams and the columns, the end beam columns and the side beam columns in the prefabricated components prefabricate the columns bearing the stress of the main body into a whole with the beams, in order to avoid the instability caused by the connection of the end beam and the side beam at the corner column, the end beam is arranged to be connected with the side beam in an outward extending mode, in order to realize the dry connection of the adjacent end beam, the end beam extends towards two ends, namely the dry connection point of the side beam also avoids the side column, and the single column is arranged at the connection position of the end of the adjacent side beam for supporting and reinforcing, and the bad construction environment and the operation complexity caused by wet connection are avoided.
In order to solve the problem of isolation and water prevention at the top of the structure, the preferred subway ground entrance structure is characterized in that a metal roof layer is connected to the T-shaped plate in a dry mode.
According to the preferred subway ground entrance and exit structure, the dry connection between the extension beam and the side beam, the dry connection between the adjacent side beams and the dry connection between the T-shaped plate and the beam body frame are all bolted.
Further, at the plane connection position, the dry type connection adopts a connecting steel sheet and a split bolt for connection, and at the corner position, a connecting angle steel and a split bolt for connection are adopted.
According to the preferred subway ground entrance and exit structure, the T-shaped plates are welded with the metal roof in a dry connection mode.
Further, steel pieces are pre-buried on the T-shaped plates, and the steel pieces of the T-shaped plates are welded with the metal roof layer by adopting H-shaped steel.
According to the preferred subway ground entrance and exit structure, the metal embedded parts are arranged in the end beam columns, the side beam columns and the independent columns, the metal embedded parts form a containment system, and auxiliary facilities are arranged in the containment system.
The construction method of the subway ground entrance structure comprises the following steps:
step 1: prefabricating an end beam column, a side beam column, a stand alone column, an independent beam and a T-shaped plate in advance;
step 2: the method comprises the steps of relatively arranging two end beam columns according to field planning to form a front door body structure and a rear door body structure, symmetrically arranging a plurality of side beam columns and independent columns on two sides perpendicular to the door body structure, enabling the independent columns to be located between the end beam columns, the side columns and adjacent side beam columns, fixing corner columns, the side columns and the independent columns with a base, enabling an extension beam to be in contact with one end of the side beam, and enabling adjacent side portions Liang Shouwei to be in contact and enclosed into a main body frame;
step 3: dry connecting and enclosing the extension beam and the side beam and the adjacent side beam to form a beam body frame;
step 4: the independent beams are connected to the beam body frame at intervals in a dry mode, so that the independent beams are located right above the independent columns and part of the side columns;
step 5: and (3) carrying out dry connection on the T-shaped plates and the beam body frame, so that the spliced parts between the adjacent T-shaped plates are positioned at the top of the independent beams to contact.
Preferably, the ribs of the T-shaped plates are dry-connected to the beam frame such that the ribs are directly above the corner posts and the side posts of the other section.
Preferably, the side beam column has 3 side columns, namely a middle side column and side columns at two ends, and the independent beam is positioned right above the independent column and the middle side column when assembled, and the rib is positioned right above the corner column and the side columns at two ends.
The preferred construction method of the fabricated concrete structure of the subway ground entrance and exit is characterized in that after the step 5, a metal roof layer is connected on a T-shaped plate in a dry mode.
The construction method of the prefabricated concrete structure of the subway ground entrance and exit is characterized in that when prefabricated components are prefabricated, metal embedded parts are arranged in the prefabricated components, after the prefabricated components are assembled, the metal embedded parts form an enclosure system, and auxiliary facilities are installed in the enclosure system.
The application has the following beneficial effects:
1. according to the application, the main body stressed column and the beam are prefabricated integrally in advance, the beam is prevented from being connected to the main body stressed column, and the beam is extended to the independent column between the main body stressed columns in an extending mode for dry connection, so that the stability of the structure is ensured, and the advanced prefabrication and the rapid assembly can be realized.
2. The fabricated concrete structure for the subway ground entrance and exit has the advantages of firmness, durability and low maintenance requirements of a concrete building, can be prefabricated in factories and assembled rapidly on site, reduces environmental pollution, ensures good construction completion degree and attractive appearance, and can meet the construction and use requirements of an important urban infrastructure of a subway.
3. The application is designed integrally, when the prefabricated part is processed, the metal embedded part is arranged, after the assembly is completed, the enclosure system is formed, and auxiliary facilities for the subway are integrated in the enclosure system, so that the integration is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is an exploded view of an assembled concrete structure of the present application.
Fig. 2 is an explosion schematic diagram of the subway ground entrance structure of the application.
Fig. 3 is a schematic diagram of a side view structure of the subway ground entrance structure of the present application.
In the drawings, the reference numerals and corresponding part names:
1-end beam column, 100-corner column, 101-cross beam, 102-extension beam, 2-side beam column, 20-side column, 21-side beam, 3-independent column, 4-T-shaped plate, 40-rib, 5-independent beam, 6-metal roof, 7-curtain wall, 8-base, 9-enclosure system.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
Example 1
As shown in fig. 1, the prefabricated components comprise an end beam column 1, a side beam column 2 and a separate column 3, wherein the end beam column 1 comprises two corner columns 100 and an end beam integrally cast with the corner columns 100, the end beam comprises a cross beam 101 and two extension beams 102 perpendicular to the cross beam 101 and the corner columns 100, the side beam column 2 comprises a side column 20 and side beams 21 integrally cast with the side column 20 and extending towards two ends, the two extension beams 102 are respectively connected with the side beams 21 on two sides in a dry mode and are connected with adjacent side beams 21 in an end-to-end dry mode in an encircling mode to form a beam body frame, and the separate column 3 is arranged at the joint of the side beams 21 and the joint of the side beams 21 and the extension beams 102 as a support.
The application breaks the whole frame into a plurality of prefabricated components from the convenience of construction and the cost of later maintenance and comprehensively considers the stability of the structure, each prefabricated component is connected in a dry mode, in order to realize the stable connection of beams and columns, an end beam column 1 and a side beam column 2 in the prefabricated components prefabricate a column bearing the stress of a main body into a whole with the beams, in order to avoid the instability caused by the connection of the end beam and the side beam 21 at a corner column 100, the end beam is arranged to be connected with the side beam 21 by an extending beam 102 which extends outwards, in order to realize the dry connection of the adjacent end beam, the end beam extends towards two ends, namely, the dry connection point of the side beam 21 also avoids the side column 20, and the end connection position of the adjacent side beam 21 is provided with a single column 3 for supporting and reinforcing, so that the whole stressed frame is stable, and the severe construction environment and the complexity of operation caused by wet connection are avoided.
The side beam column 2 comprises a plurality of side uprights 20 and side beams 21 positioned on the side uprights 20, and the side beams 21 extend out of the side uprights 20
The prefabricated part further comprises a plurality of T-shaped plates 4 and independent beams 5, wherein the T-shaped plates 4 are spliced and connected to the beam body frame in a dry mode, and the independent beams 5 are connected to the beam body frame in a dry mode along the direction perpendicular to the side beam columns 2 and are located at the splicing positions of the adjacent T-shaped plates 4. As the top structure of main part frame, in order to realize prefabricated scene assembly in advance, set up T template 4 to a plurality ofly, and assemble on the roof beam body frame, in order to improve the stability of the horizontal and the vertical atress of top structure, install independent roof beam 5 additional on the roof beam body frame and consolidate, and be located the concatenation department of adjacent T template 4, all play the effect of consolidating to the connection of T template 4 and with the connection of roof beam body frame.
L-shaped notches are formed at two ends of the independent beam 5, so that the independent beam 5 is conveniently lapped on the beam body frame through the notches and connected in a dry mode.
The T-shaped plate 4 comprises a flat plate and ribs 40 positioned below the flat plate, the ribs 40 are in dry connection with the beam body frame, and L-shaped notches are formed in two ends of the ribs 40, so that the T-shaped plate 4 can be conveniently lapped on the beam body frame through the notches and connected in a dry mode.
The independent beams 5 are located directly above the independent columns 3 and parts of the side columns 20, and the ribs 40 are located directly above the corner columns 100 and other parts of the side columns 20.
Example 2
As shown in fig. 1 to 3, the subway ground entrance structure includes the fabricated concrete structure of embodiment 1.
The application breaks the whole frame of the subway ground entrance and exit into a plurality of prefabricated components from the convenience of construction and the cost of later maintenance and comprehensively considers the stability of the structure, each prefabricated component is connected in a dry mode, in order to realize the stable connection of beams and columns, an end beam column 1 and a side beam column 2 in the prefabricated components prefabricate a column bearing the stress of a main body into a whole body with the beams, in order to avoid the instability caused by the connection of the end beam and the side beam 21 at a corner column 100, the end beam is arranged to be connected with the side beam 21 in an outward extending mode, in order to avoid the dry connection of the adjacent end beam, the end beam also extends towards two ends, namely the dry connection point of the side beam 21 also avoids the side column 20, the independent column 3 is arranged at the connection position of the end of the adjacent side beam 21 for supporting and reinforcing, and the severe construction environment and operation complexity caused by wet connection are avoided.
Specifically, the number of the end beam columns 1 is 2, the front and the back of the end beam columns are oppositely arranged to form a door body structure of a subway entrance, the number of the side beam columns 2 is 4, 2 side beam columns are respectively arranged on two sides of the door body structure, each side beam column 2 comprises 3 side upright columns 20 and side beam 21 positioned on the side upright column 20, the side upright columns 20 extend out of two ends of the side beam 21, 6 contact points are formed between two extending beams 102 and the side beam 21 of the side beam 21 and between adjacent side beam 21, 6 dry connection points are formed in a dry connection mode, 6 independent columns 3 are arranged at the 6 dry connection points for supporting and reinforcing, and dry connection is also adopted between the contact points and the independent beams 5.
In order to solve the problem of isolating and waterproofing at the top of the structure, a metal roof 6 layer is connected on the T-shaped plate 4 in a dry mode.
The dry connections between the extension beam 102 and the side beam 21, between adjacent side beams 21, and between the T-plate 4 and the beam body frame are all bolted connections.
Specifically, the number of the T-shaped plates 4 is 6, the number of the 6T-shaped plates 4 is 6, the total number of the 6T-shaped plates 4 is 6, the number of the spliced parts is 5, the 5 independent beams 5 are correspondingly arranged at the 5 spliced parts, the independent beams 5 are in dry connection with the independent columns 3 and the beam bodies right above the side columns 20 positioned in the middle of the side beams 21, and the 6 ribs 40 are correspondingly in dry connection with the corner columns 100 and the beam bodies right above the side columns 20 positioned at the two ends of the side beams 21.
At the plane junction, the dry-type connection adopts connecting steel sheet and split bolt connection, adopts angle steel and split bolt connection at the corner.
The dry connection of the T-shaped plate 4 and the metal roof 6 is welding.
The T-shaped plate 4 is pre-embedded with steel pieces, and H-shaped steel is adopted to weld the steel pieces of the T-shaped plate 4 with the metal roof 6 layers.
Example 3
The difference between this embodiment and embodiment 2 is that the end beam column 1, the side beam column 2, and the independent column 3 are provided with metal embedded parts, after the prefabricated components are assembled, the metal embedded parts form a containment system 9, and the containment system 9 is provided with auxiliary facilities.
Specifically, the enclosure system 9 at the entrance integrates a pull gate, a bulletin board, and a flood control cabinet.
The enclosure systems 9 on both sides and the entrance facing the rear wall are integrated into the glass or metal sheet curtain wall 7.
The enclosure systems 9 positioned at the inner ends of the two sides are integrated into the smoke exhaust air shaft and the shutter.
The lighting system is integrated into the roof structure consisting of T-shaped boards 4.
The corner posts 100, the independent posts 3 and the side posts 20 are all in wet connection with the base 8 through sleeve grouting.
The outer side of the base 8 is integrated with a waiting seat, and the back is integrated with a green belt.
Example 4
The construction method of the subway ground entrance structure comprises the following steps:
step 1: prefabricating an end beam column 1, a side beam column 2, a stand alone column 3, an independent beam 5 and a T-shaped plate 4 in advance;
step 2: the two end beam columns 1 are oppositely arranged according to field planning to form a front door body structure and a rear door body structure, a plurality of side beam columns 2 and independent columns 3 are symmetrically arranged on two sides perpendicular to the door body structure, the independent columns 3 are positioned between the end beam columns 1, the side columns 20 and the adjacent side beam columns 2, corner columns 100, the side columns 20 and the independent columns 3 are fixed with a base 8, so that an extension beam 102 is contacted with one end of the side beam 21, and the adjacent side beam 21 is contacted end to enclose a main body frame;
the corner posts 100, the side posts 20 and the independent posts 3 are in sleeve grouting wet connection with the base 8.
Step 3: the extension beam 102 and the side beam 21 are connected in a dry mode and the adjacent side beams 21 are enclosed to form a beam body frame;
step 4: dry-connecting the individual beams 5 to the beam body frame such that the individual beams 5 are located directly above the individual columns 3 and portions of the side columns 20;
step 5: the T-shaped plates 4 are dry-connected to the beam body frame such that the splice between adjacent T-shaped plates 4 is at the top of the individual beams 5 and such that the ribs 40 are directly above the corner posts 100 and the other portion of the side posts 20.
The side beam 2 has 3 side posts 20, namely a middle side post and two side posts at two ends, and is assembled so that the independent beam 5 is positioned right above the independent post 3 and the middle side post 20 and the rib 40 is positioned right above the corner post 100 and the two side posts 20.
After the T-shaped plate 4 is installed, the metal roof 6 layer is connected on the T-shaped plate 4 in a dry mode.
When the T-shaped plate 4 is prefabricated and poured, steel pieces are pre-buried at intervals, H-shaped steel is welded on the steel pieces, and then the metal roof 6 layers and the H-shaped steel are welded, so that the welding of the T-shaped plate 4 and the metal roof 6 layers is realized.
The metal roof 6 layer is made of aluminum alloy, and the aluminum alloy is corrosion-resistant, light in weight, smooth in material, easy to manage and durable.
When the prefabricated part is prefabricated, a metal embedded part is arranged in the prefabricated part, the metal embedded part forms an enclosure system 9 after the prefabricated part is assembled, and auxiliary facilities are installed in the enclosure system 9.
Specifically, a pull gate, a flood control cabinet and a bulletin board are integrated in the enclosure 9 at the side entrance.
And integrating metal and glass plate curtain walls 7 into a containment system 9 at the side inner part and the rear wall to form the dry-hanging curtain wall 7.
The enclosure systems 9 positioned at the inner ends of the two sides are integrated into the smoke exhaust air shaft and the shutter.
The lighting system is integrated into the roof structure consisting of T-shaped boards 4.
The terms "upper", "lower", "top", "lower", "both ends" and "middle" as used herein are all oriented as shown in the drawing figures.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. The assembled concrete structure is characterized by comprising a plurality of prefabricated components, wherein each prefabricated component comprises an end beam column (1), a side beam column (2) and a separate column (3), each end beam column (1) comprises two corner columns (100) and an end beam integrally cast with each corner column (100), each end beam comprises a cross beam (101) and two extension beams (102) perpendicular to each cross beam (101) and each corner column (100), each side beam column (2) comprises a side column (20) and side beams (21) integrally cast with each side column (20) and extending towards two ends, each extension beam (102) is respectively connected with each side beam (21) on two sides in a dry mode, each adjacent side beam (21) is connected in a head-tail dry mode to form a beam body frame, and each separate column (3) is arranged at the joint of each side beam (21) and each extension beam (102) and each joint of the side beams (21) and each extension beam (102) is used as a support; the side beam column (2) comprises a plurality of side uprights and side beams positioned on the side uprights, and the side beams extend out of the side uprights.
2. The fabricated concrete structure according to claim 1, wherein the prefabricated components further comprise a plurality of T-shaped plates (4) and independent beams (5), the T-shaped plates (4) are spliced and dry-connected to the beam body frame, and the independent beams (5) are dry-connected to the beam body frame in a direction perpendicular to the side beam columns (2) and are positioned at the splice of adjacent T-shaped plates (4).
3. The fabricated concrete structure of claim 2, wherein the T-plate (4) comprises a flat plate and ribs (40) located under the flat plate, the ribs (40) being dry-connected with the beam frame.
4. A fabricated concrete structure according to claim 3, characterized in that the independent beams (5) are located directly above the independent columns (3) and parts of the side columns (20), and the ribs (40) are located directly above the corner columns (100) and further parts of the side columns (20).
5. Subway ground access structure, characterized in that it comprises a fabricated concrete structure according to any one of claims 1-4.
6. The subway ground entrance structure according to claim 5, wherein the T-shaped plate (4) is connected with a metal roof (6) layer in a dry mode.
7. The subway ground entrance structure according to claim 5 or 6, characterized in that metal embedded parts are arranged in the end beam column (1), the side beam column (2) and the independent column (3), the metal embedded parts form an enclosure system (9), and auxiliary facilities are installed in the enclosure system (9).
8. A construction method of a subway ground entrance structure, characterized in that the subway ground entrance structure according to any one of claims 5 to 7 is constructed, comprising the steps of:
step 1: the prefabricated part comprises an end beam column (1), a side beam column (2), a stand column (3), an independent beam (5) and a T-shaped plate (4);
step 2: according to field planning, two end beam columns (1) are oppositely arranged to form a front door body structure and a rear door body structure, a plurality of side beam columns (2) and independent columns (3) are symmetrically arranged on two sides perpendicular to the door body structure, the independent columns (3) are positioned between the end beam columns (1) and the side columns (20) and adjacent side beam columns (2), corner columns (100), the side columns (20) and the independent columns (3) are fixed with a base (8), so that an extension beam (102) is contacted with one end of each side beam (21), and adjacent side beams (21) are contacted in an end-to-end mode to form a main body frame;
step 3: the extension beam (102) and the side beam (21) are connected in a dry mode and are enclosed to form a beam body frame, wherein the adjacent side beam (21) is connected in a dry mode;
step 4: the independent beams (5) are connected to the beam body frame at intervals in a dry mode, so that the independent beams (5) are positioned right above the independent columns (3) and part of the side columns (20);
step 5: and (3) dry-connecting the T-shaped plates (4) with the beam body frame, so that the spliced parts between the adjacent T-shaped plates (4) are positioned at the top contact of the independent beams (5).
9. Construction method according to claim 8, characterized in that after said step 5, the metal roofing (6) layer is dry-joined on the T-shaped board (4).
10. Construction method according to claim 8 or 9, characterized in that, when prefabricating the prefabricated parts, metal embedments are provided in the prefabricated parts, which after assembly form an enclosure system (9), and that auxiliary facilities are installed in the enclosure system (9).
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| CN114737797A (en) * | 2022-05-19 | 2022-07-12 | 中国铁建重工集团股份有限公司 | Pressure-bearing building and assembling method thereof |
| CN114876246A (en) * | 2022-05-31 | 2022-08-09 | 中铁第四勘察设计院集团有限公司 | Subway station entrance and exit ground structure and construction method thereof |
| CN114856264A (en) * | 2022-05-31 | 2022-08-05 | 中铁第四勘察设计院集团有限公司 | Emergency evacuation stair ground structure and construction method thereof |
| CN117449545A (en) * | 2023-09-14 | 2024-01-26 | 广东省粤建装饰集团有限公司 | Assembled type track traffic station entrance and exit awning and construction method |
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